chore(deps): cleanup go.mod a little bit (#136)

* Upgrade docker to v19.03.7

* go mod vendor

* golangci-lint 1.23.8

.github/workflows/push.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: docker://golangci/golangci-lint:v1.23.6
+    - uses: docker://golangci/golangci-lint:v1.23.8
       with:
         args: golangci-lint run
       env:

go.mod

@@ -5,17 +5,14 @@ go 1.14
 require (
 	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
 	github.com/MichaelTJones/walk v0.0.0-20161122175330-4748e29d5718 // indirect
-	github.com/Microsoft/go-winio v0.4.11 // indirect
+	github.com/Microsoft/hcsshim v0.8.7 // indirect
-	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
 	github.com/andreaskoch/go-fswatch v1.0.0
-	github.com/containerd/continuity v0.0.0-20181203112020-004b46473808 // indirect
+	github.com/containerd/containerd v1.3.3 // indirect
 	github.com/docker/distribution v2.7.1+incompatible // indirect
-	github.com/docker/docker v1.13.1
+	github.com/docker/docker v1.4.2-0.20200229013735-71373c6105e3
 	github.com/docker/go-connections v0.4.0 // indirect
-	github.com/docker/go-units v0.3.3 // indirect
 	github.com/emirpasic/gods v1.12.0 // indirect
 	github.com/go-ini/ini v1.41.0
-	github.com/gogo/protobuf v1.2.0 // indirect
 	github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e // indirect
 	github.com/gorilla/mux v1.7.0 // indirect
 	github.com/howeyc/gopass v0.0.0-20190910152052-7cb4b85ec19c
@@ -24,13 +21,14 @@ require (
 	github.com/jtolds/gls v4.2.1+incompatible // indirect
 	github.com/mgutz/str v1.2.0 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
 	github.com/opencontainers/image-spec v1.0.1 // indirect
 	github.com/opencontainers/runc v0.1.1 // indirect
 	github.com/pkg/errors v0.8.1
 	github.com/robertkrimen/otto v0.0.0-20191219234010-c382bd3c16ff
 	github.com/sabhiram/go-gitignore v0.0.0-20180611051255-d3107576ba94
-	github.com/sirupsen/logrus v1.3.0
+	github.com/sirupsen/logrus v1.4.1
 	github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304 // indirect
 	github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c // indirect
 	github.com/spf13/cobra v0.0.3
@@ -40,10 +38,7 @@ require (
 	golang.org/x/net v0.0.0-20191126235420-ef20fe5d7933 // indirect
 	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e // indirect
 	golang.org/x/sys v0.0.0-20191128015809-6d18c012aee9 // indirect
-	golang.org/x/text v0.3.2 // indirect
 	golang.org/x/time v0.0.0-20181108054448-85acf8d2951c // indirect
-	google.golang.org/genproto v0.0.0-20190128161407-8ac453e89fca // indirect
-	google.golang.org/grpc v1.18.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/godo.v2 v2.0.9
 	gopkg.in/ini.v1 v1.41.0 // indirect
@@ -54,7 +49,3 @@ require (
 	gopkg.in/yaml.v3 v3.0.0-20200121175148-a6ecf24a6d71
 	gotest.tools v2.2.0+incompatible
 )
-
-replace github.com/docker/docker => github.com/docker/engine v0.0.0-20181106193140-f5749085e9cb
-
-replace golang.org/x/sys => golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a

go.sum

@@ -1,32 +1,44 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/MichaelTJones/walk v0.0.0-20161122175330-4748e29d5718 h1:FSsoaa1q4jAaeiAUxf9H0PgFP7eA/UL6c3PdJH+nMN4=
 github.com/MichaelTJones/walk v0.0.0-20161122175330-4748e29d5718/go.mod h1:VVwKsx9Dc8rNG55BWqogoJzGubjKnRoXdUvpGbWqeCc=
-github.com/Microsoft/go-winio v0.4.11 h1:zoIOcVf0xPN1tnMVbTtEdI+P8OofVk3NObnwOQ6nK2Q=
+github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5 h1:ygIc8M6trr62pF5DucadTWGdEB4mEyvzi0e2nbcmcyA=
-github.com/Microsoft/go-winio v0.4.11/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
+github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5/go.mod h1:tTuCMEN+UleMWgg9dVx4Hu52b1bJo+59jBh3ajtinzw=
-github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 h1:TngWCqHvy9oXAN6lEVMRuU21PR1EtLVZJmdB18Gu3Rw=
+github.com/Microsoft/hcsshim v0.8.7 h1:ptnOoufxGSzauVTsdE+wMYnCWA301PdoN4xg5oRdZpg=
-github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5/go.mod h1:lmUJ/7eu/Q8D7ML55dXQrVaamCz2vxCfdQBasLZfHKk=
+github.com/Microsoft/hcsshim v0.8.7/go.mod h1:OHd7sQqRFrYd3RmSgbgji+ctCwkbq2wbEYNSzOYtcBQ=
 github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7 h1:uSoVVbwJiQipAclBbw+8quDsfcvFjOpI5iCf4p/cqCs=
 github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs=
 github.com/andreaskoch/go-fswatch v1.0.0 h1:la8nP/HiaFCxP2IM6NZNUCoxgLWuyNFgH0RligBbnJU=
 github.com/andreaskoch/go-fswatch v1.0.0/go.mod h1:r5/iV+4jfwoY2sYqBkg8vpF04ehOvEl4qPptVGdxmqo=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 h1:kFOfPq6dUM1hTo4JG6LR5AXSUEsOjtdm0kw0FtQtMJA=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
+github.com/blang/semver v3.1.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/containerd/continuity v0.0.0-20181203112020-004b46473808 h1:4BX8f882bXEDKfWIf0wa8HRvpnBoPszJJXL+TVbBw4M=
+github.com/containerd/cgroups v0.0.0-20190919134610-bf292b21730f/go.mod h1:OApqhQ4XNSNC13gXIwDjhOQxjWa/NxkwZXJ1EvqT0ko=
-github.com/containerd/continuity v0.0.0-20181203112020-004b46473808/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
+github.com/containerd/console v0.0.0-20180822173158-c12b1e7919c1/go.mod h1:Tj/on1eG8kiEhd0+fhSDzsPAFESxzBBvdyEgyryXffw=
+github.com/containerd/containerd v1.3.0-beta.2.0.20190828155532-0293cbd26c69/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
+github.com/containerd/containerd v1.3.3 h1:LoIzb5y9x5l8VKAlyrbusNPXqBY0+kviRloxFUMFwKc=
+github.com/containerd/containerd v1.3.3/go.mod h1:bC6axHOhabU15QhwfG7w5PipXdVtMXFTttgp+kVtyUA=
+github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc h1:TP+534wVlf61smEIq1nwLLAjQVEK2EADoW3CX9AuT+8=
+github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
+github.com/containerd/fifo v0.0.0-20190226154929-a9fb20d87448/go.mod h1:ODA38xgv3Kuk8dQz2ZQXpnv/UZZUHUCL7pnLehbXgQI=
+github.com/containerd/go-runc v0.0.0-20180907222934-5a6d9f37cfa3/go.mod h1:IV7qH3hrUgRmyYrtgEeGWJfWbgcHL9CSRruz2Vqcph0=
+github.com/containerd/ttrpc v0.0.0-20190828154514-0e0f228740de/go.mod h1:PvCDdDGpgqzQIzDW1TphrGLssLDZp2GuS+X5DkEJB8o=
+github.com/containerd/typeurl v0.0.0-20180627222232-a93fcdb778cd/go.mod h1:Cm3kwCdlkCfMSHURc+r6fwoGH6/F1hH3S4sg0rLFWPc=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BUmsJpcB+cRlLU7cSug=
 github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/engine v0.0.0-20181106193140-f5749085e9cb h1:PyjxRdW1mqCmSoxy/6uP01P7CGbsD+woX+oOWbaUPwQ=
+github.com/docker/docker v1.4.2-0.20200229013735-71373c6105e3 h1:rQeprWgRziyxTHx4/mEhwjbAiFUbrk0Kqe9KlcWBnZU=
-github.com/docker/engine v0.0.0-20181106193140-f5749085e9cb/go.mod h1:3CPr2caMgTHxxIAZgEMd3uLYPDlRvPqCpyeRf6ncPcY=
+github.com/docker/docker v1.4.2-0.20200229013735-71373c6105e3/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
-github.com/docker/go-units v0.3.3 h1:Xk8S3Xj5sLGlG5g67hJmYMmUgXv5N4PhkjJHHqrwnTk=
+github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
-github.com/docker/go-units v0.3.3/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
+github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/emirpasic/gods v1.9.0 h1:rUF4PuzEjMChMiNsVjdI+SyLu7rEqpQ5reNFnhC7oFo=
 github.com/emirpasic/gods v1.9.0/go.mod h1:YfzfFFoVP/catgzJb4IKIqXjX78Ha8FMSDh3ymbK86o=
 github.com/emirpasic/gods v1.12.0 h1:QAUIPSaCu4G+POclxeqb3F+WPpdKqFGlw36+yOzGlrg=
@@ -37,20 +49,27 @@ github.com/gliderlabs/ssh v0.1.1 h1:j3L6gSLQalDETeEg/Jg0mGY0/y/N6zI2xX1978P0Uqw=
 github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
 github.com/go-ini/ini v1.41.0 h1:526aoxDtxRHFQKMZfcX2OG9oOI8TJ5yPLM0Mkno/uTY=
 github.com/go-ini/ini v1.41.0/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
-github.com/gogo/protobuf v1.2.0 h1:xU6/SpYbvkNYiptHJYEDRseDLvYE7wSqhYYNy0QSUzI=
+github.com/godbus/dbus v0.0.0-20190422162347-ade71ed3457e/go.mod h1:bBOAhwG1umN6/6ZUMtDFBMQR8jRg9O75tm9K00oMsK4=
-github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
+github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
+github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
+github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e h1:JKmoR8x90Iww1ks85zJ1lfDGgIiMDuIptTOhJq+zKyg=
 github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/mux v1.7.0 h1:tOSd0UKHQd6urX6ApfOn4XdBMY6Sh1MfxV3kmaazO+U=
 github.com/gorilla/mux v1.7.0/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
+github.com/hashicorp/errwrap v0.0.0-20141028054710-7554cd9344ce/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
+github.com/hashicorp/go-multierror v0.0.0-20161216184304-ed905158d874/go.mod h1:JMRHfdO9jKNzS/+BTlxCjKNQHg/jZAft8U7LloJvN7I=
+github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/howeyc/gopass v0.0.0-20190910152052-7cb4b85ec19c h1:aY2hhxLhjEAbfXOx2nRJxCXezC6CO2V/yN+OCr1srtk=
 github.com/howeyc/gopass v0.0.0-20190910152052-7cb4b85ec19c/go.mod h1:lADxMC39cJJqL93Duh1xhAs4I2Zs8mKS89XWXFGp9cs=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
@@ -64,6 +83,7 @@ github.com/jtolds/gls v4.2.1+incompatible h1:fSuqC+Gmlu6l/ZYAoZzx2pyucC8Xza35fpR
 github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e h1:RgQk53JHp/Cjunrr1WlsXSZpqXn+uREuHvUVcK82CV8=
 github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
+github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
 github.com/kisielk/gotool v1.0.0 h1:AV2c/EiW3KqPNT9ZKl07ehoAGi4C5/01Cfbblndcapg=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
@@ -79,12 +99,18 @@ github.com/mitchellh/go-homedir v1.0.0 h1:vKb8ShqSby24Yrqr/yDYkuFz8d0WUjys40rvnG
 github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/morikuni/aec v1.0.0 h1:nP9CBfwrvYnBRgY6qfDQkygYDmYwOilePFkwzv4dU8A=
+github.com/morikuni/aec v1.0.0/go.mod h1:BbKIizmSmc5MMPqRYbxO4ZU0S0+P200+tUnFx7PXmsc=
+github.com/opencontainers/go-digest v0.0.0-20180430190053-c9281466c8b2/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
 github.com/opencontainers/go-digest v1.0.0-rc1 h1:WzifXhOVOEOuFYOJAW6aQqW0TooG2iki3E3Ii+WN7gQ=
 github.com/opencontainers/go-digest v1.0.0-rc1/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
 github.com/opencontainers/image-spec v1.0.1 h1:JMemWkRwHx4Zj+fVxWoMCFm/8sYGGrUVojFA6h/TRcI=
 github.com/opencontainers/image-spec v1.0.1/go.mod h1:BtxoFyWECRxE4U/7sNtV5W15zMzWCbyJoFRP3s7yZA0=
+github.com/opencontainers/runc v0.0.0-20190115041553-12f6a991201f/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
 github.com/opencontainers/runc v0.1.1 h1:GlxAyO6x8rfZYN9Tt0Kti5a/cP41iuiO2yYT0IJGY8Y=
 github.com/opencontainers/runc v0.1.1/go.mod h1:qT5XzbpPznkRYVz/mWwUaVBUv2rmF59PVA73FjuZG0U=
+github.com/opencontainers/runtime-spec v0.1.2-0.20190507144316-5b71a03e2700/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0=
+github.com/opencontainers/runtime-tools v0.0.0-20181011054405-1d69bd0f9c39/go.mod h1:r3f7wjNzSs2extwzU3Y+6pKfobzPh+kKFJ3ofN+3nfs=
 github.com/pelletier/go-buffruneio v0.2.0 h1:U4t4R6YkofJ5xHm3dJzuRpPZ0mr5MMCoAWooScCR7aA=
 github.com/pelletier/go-buffruneio v0.2.0/go.mod h1:JkE26KsDizTr40EUHkXVtNPvgGtbSNq5BcowyYOWdKo=
 github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
@@ -93,14 +119,15 @@ github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/prometheus/procfs v0.0.5/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
 github.com/robertkrimen/otto v0.0.0-20191219234010-c382bd3c16ff h1:+6NUiITWwE5q1KO6SAfUX918c+Tab0+tGAM/mtdlUyA=
 github.com/robertkrimen/otto v0.0.0-20191219234010-c382bd3c16ff/go.mod h1:xvqspoSXJTIpemEonrMDFq6XzwHYYgToXWj5eRX1OtY=
 github.com/sabhiram/go-gitignore v0.0.0-20180611051255-d3107576ba94 h1:G04eS0JkAIVZfaJLjla9dNxkJCPiKIGZlw9AfOhzOD0=
 github.com/sabhiram/go-gitignore v0.0.0-20180611051255-d3107576ba94/go.mod h1:b18R55ulyQ/h3RaWyloPyER7fWQVZvimKKhnI5OfrJQ=
 github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
-github.com/sirupsen/logrus v1.3.0 h1:hI/7Q+DtNZ2kINb6qt/lS+IyXnHQe9e90POfeewL/ME=
+github.com/sirupsen/logrus v1.4.1 h1:GL2rEmy6nsikmW0r8opw9JIRScdMF5hA8cOYLH7In1k=
-github.com/sirupsen/logrus v1.3.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
+github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
 github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304 h1:Jpy1PXuP99tXNrhbq2BaPz9B+jNAvH1JPQQpG/9GCXY=
 github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c h1:Ho+uVpkel/udgjbwB5Lktg9BtvJSh2DT0Hi6LPSyI2w=
@@ -118,46 +145,70 @@ github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/syndtr/gocapability v0.0.0-20170704070218-db04d3cc01c8/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
+github.com/urfave/cli v0.0.0-20171014202726-7bc6a0acffa5/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
 github.com/xanzy/ssh-agent v0.2.0 h1:Adglfbi5p9Z0BmK2oKU9nTG+zKfniSfnaMYB+ULd+Ro=
 github.com/xanzy/ssh-agent v0.2.0/go.mod h1:0NyE30eGUDliuLEHJgYte/zncp2zdTStcOnWhgSqHD8=
+github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=
+github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415/go.mod h1:GwrjFmJcFw6At/Gs6z4yjiIwzuJ1/+UwLxMQDVQXShQ=
+github.com/xeipuuv/gojsonschema v0.0.0-20180618132009-1d523034197f/go.mod h1:5yf86TLmAcydyeJq5YvxkGPE2fm/u4myDekKRoLuqhs=
+go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793 h1:u+LnwYTOOW7Ukr/fppxEb1Nwz0AtPflrblfvUudpo+I=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191202143827-86a70503ff7e h1:egKlR8l7Nu9vHGWbcUV8lqR4987UfUbBd7GbhqGzNYU=
 golang.org/x/crypto v0.0.0-20191202143827-86a70503ff7e/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
+golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
+golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20181106065722-10aee1819953/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190501004415-9ce7a6920f09/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20191126235420-ef20fe5d7933 h1:e6HwijUxhDe+hPNjZQQn9bA5PW3vNmnN64U2ZW759Lk=
 golang.org/x/net v0.0.0-20191126235420-ef20fe5d7933/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a h1:aYOabOQFp6Vj6W1F80affTUvO9UxmJRx8K0gsfABByQ=
+golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20180903190138-2b024373dcd9/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190514135907-3a4b5fb9f71f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191128015809-6d18c012aee9 h1:ZBzSG/7F4eNKz2L3GE9o300RX0Az1Bw5HF7PDraD+qU=
+golang.org/x/sys v0.0.0-20191128015809-6d18c012aee9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c h1:fqgJT0MGcGpPgpWU7VRdRjuArfcOvC4AoJmILihzhDg=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52 h1:JG/0uqcGdTNgq7FdU+61l5Pdmb8putNZlXb65bJBROs=
+golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
+golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190128161407-8ac453e89fca h1:L1odPN6KVjhk0Lbg41BKcjGjP7ELTvh/qDcyh6hEfv0=
+google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb h1:i1Ppqkc3WQXikh8bXiwHqAN5Rv3/qDCcRk0/Otx73BY=
-google.golang.org/genproto v0.0.0-20190128161407-8ac453e89fca/go.mod h1:L3J43x8/uS+qIUoksaLKe6OS3nUKxOKuIFz1sl2/jx4=
+google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.18.0 h1:IZl7mfBGfbhYx2p2rKRtYgDFw6SBz+kclmxYrCksPPA=
+google.golang.org/grpc v1.20.1 h1:Hz2g2wirWK7H0qIIhGIqRGTuMwTE8HEKFnDZZ7lm9NU=
-google.golang.org/grpc v1.18.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
+google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -185,4 +236,5 @@ gopkg.in/yaml.v3 v3.0.0-20200121175148-a6ecf24a6d71 h1:Xe2gvTZUJpsvOWUnvmL/tmhVB
 gopkg.in/yaml.v3 v3.0.0-20200121175148-a6ecf24a6d71/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
-honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=

vendor/github.com/Microsoft/go-winio/file.go

@@ -16,6 +16,7 @@ import (
 //sys createIoCompletionPort(file syscall.Handle, port syscall.Handle, key uintptr, threadCount uint32) (newport syscall.Handle, err error) = CreateIoCompletionPort
 //sys getQueuedCompletionStatus(port syscall.Handle, bytes *uint32, key *uintptr, o **ioOperation, timeout uint32) (err error) = GetQueuedCompletionStatus
 //sys setFileCompletionNotificationModes(h syscall.Handle, flags uint8) (err error) = SetFileCompletionNotificationModes
+//sys wsaGetOverlappedResult(h syscall.Handle, o *syscall.Overlapped, bytes *uint32, wait bool, flags *uint32) (err error) = ws2_32.WSAGetOverlappedResult
 
 type atomicBool int32
 
@@ -79,6 +80,7 @@ type win32File struct {
 	wg            sync.WaitGroup
 	wgLock        sync.RWMutex
 	closing       atomicBool
+	socket        bool
 	readDeadline  deadlineHandler
 	writeDeadline deadlineHandler
 }
@@ -109,7 +111,13 @@ func makeWin32File(h syscall.Handle) (*win32File, error) {
 }
 
 func MakeOpenFile(h syscall.Handle) (io.ReadWriteCloser, error) {
-	return makeWin32File(h)
+	// If we return the result of makeWin32File directly, it can result in an
+	// interface-wrapped nil, rather than a nil interface value.
+	f, err := makeWin32File(h)
+	if err != nil {
+		return nil, err
+	}
+	return f, nil
 }
 
 // closeHandle closes the resources associated with a Win32 handle
@@ -190,6 +198,10 @@ func (f *win32File) asyncIo(c *ioOperation, d *deadlineHandler, bytes uint32, er
 			if f.closing.isSet() {
 				err = ErrFileClosed
 			}
+		} else if err != nil && f.socket {
+			// err is from Win32. Query the overlapped structure to get the winsock error.
+			var bytes, flags uint32
+			err = wsaGetOverlappedResult(f.handle, &c.o, &bytes, false, &flags)
 		}
 	case <-timeout:
 		cancelIoEx(f.handle, &c.o)
@@ -265,6 +277,10 @@ func (f *win32File) Flush() error {
 	return syscall.FlushFileBuffers(f.handle)
 }
 
+func (f *win32File) Fd() uintptr {
+	return uintptr(f.handle)
+}
+
 func (d *deadlineHandler) set(deadline time.Time) error {
 	d.setLock.Lock()
 	defer d.setLock.Unlock()

vendor/github.com/Microsoft/go-winio/go.mod

@@ -0,0 +1,9 @@
+module github.com/Microsoft/go-winio
+
+go 1.12
+
+require (
+	github.com/pkg/errors v0.8.1
+	github.com/sirupsen/logrus v1.4.1
+	golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3
+)

vendor/github.com/Microsoft/go-winio/go.sum

@@ -0,0 +1,18 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
+github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.4.1 h1:GL2rEmy6nsikmW0r8opw9JIRScdMF5hA8cOYLH7In1k=
+github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
+github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b h1:ag/x1USPSsqHud38I9BAC88qdNLDHHtQ4mlgQIZPPNA=
+golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3 h1:7TYNF4UdlohbFwpNH04CoPMp1cHUZgO1Ebq5r2hIjfo=
+golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

vendor/github.com/Microsoft/go-winio/hvsock.go

@@ -0,0 +1,305 @@
+package winio
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"os"
+	"syscall"
+	"time"
+	"unsafe"
+
+	"github.com/Microsoft/go-winio/pkg/guid"
+)
+
+//sys bind(s syscall.Handle, name unsafe.Pointer, namelen int32) (err error) [failretval==socketError] = ws2_32.bind
+
+const (
+	afHvSock = 34 // AF_HYPERV
+
+	socketError = ^uintptr(0)
+)
+
+// An HvsockAddr is an address for a AF_HYPERV socket.
+type HvsockAddr struct {
+	VMID      guid.GUID
+	ServiceID guid.GUID
+}
+
+type rawHvsockAddr struct {
+	Family    uint16
+	_         uint16
+	VMID      guid.GUID
+	ServiceID guid.GUID
+}
+
+// Network returns the address's network name, "hvsock".
+func (addr *HvsockAddr) Network() string {
+	return "hvsock"
+}
+
+func (addr *HvsockAddr) String() string {
+	return fmt.Sprintf("%s:%s", &addr.VMID, &addr.ServiceID)
+}
+
+// VsockServiceID returns an hvsock service ID corresponding to the specified AF_VSOCK port.
+func VsockServiceID(port uint32) guid.GUID {
+	g, _ := guid.FromString("00000000-facb-11e6-bd58-64006a7986d3")
+	g.Data1 = port
+	return g
+}
+
+func (addr *HvsockAddr) raw() rawHvsockAddr {
+	return rawHvsockAddr{
+		Family:    afHvSock,
+		VMID:      addr.VMID,
+		ServiceID: addr.ServiceID,
+	}
+}
+
+func (addr *HvsockAddr) fromRaw(raw *rawHvsockAddr) {
+	addr.VMID = raw.VMID
+	addr.ServiceID = raw.ServiceID
+}
+
+// HvsockListener is a socket listener for the AF_HYPERV address family.
+type HvsockListener struct {
+	sock *win32File
+	addr HvsockAddr
+}
+
+// HvsockConn is a connected socket of the AF_HYPERV address family.
+type HvsockConn struct {
+	sock          *win32File
+	local, remote HvsockAddr
+}
+
+func newHvSocket() (*win32File, error) {
+	fd, err := syscall.Socket(afHvSock, syscall.SOCK_STREAM, 1)
+	if err != nil {
+		return nil, os.NewSyscallError("socket", err)
+	}
+	f, err := makeWin32File(fd)
+	if err != nil {
+		syscall.Close(fd)
+		return nil, err
+	}
+	f.socket = true
+	return f, nil
+}
+
+// ListenHvsock listens for connections on the specified hvsock address.
+func ListenHvsock(addr *HvsockAddr) (_ *HvsockListener, err error) {
+	l := &HvsockListener{addr: *addr}
+	sock, err := newHvSocket()
+	if err != nil {
+		return nil, l.opErr("listen", err)
+	}
+	sa := addr.raw()
+	err = bind(sock.handle, unsafe.Pointer(&sa), int32(unsafe.Sizeof(sa)))
+	if err != nil {
+		return nil, l.opErr("listen", os.NewSyscallError("socket", err))
+	}
+	err = syscall.Listen(sock.handle, 16)
+	if err != nil {
+		return nil, l.opErr("listen", os.NewSyscallError("listen", err))
+	}
+	return &HvsockListener{sock: sock, addr: *addr}, nil
+}
+
+func (l *HvsockListener) opErr(op string, err error) error {
+	return &net.OpError{Op: op, Net: "hvsock", Addr: &l.addr, Err: err}
+}
+
+// Addr returns the listener's network address.
+func (l *HvsockListener) Addr() net.Addr {
+	return &l.addr
+}
+
+// Accept waits for the next connection and returns it.
+func (l *HvsockListener) Accept() (_ net.Conn, err error) {
+	sock, err := newHvSocket()
+	if err != nil {
+		return nil, l.opErr("accept", err)
+	}
+	defer func() {
+		if sock != nil {
+			sock.Close()
+		}
+	}()
+	c, err := l.sock.prepareIo()
+	if err != nil {
+		return nil, l.opErr("accept", err)
+	}
+	defer l.sock.wg.Done()
+
+	// AcceptEx, per documentation, requires an extra 16 bytes per address.
+	const addrlen = uint32(16 + unsafe.Sizeof(rawHvsockAddr{}))
+	var addrbuf [addrlen * 2]byte
+
+	var bytes uint32
+	err = syscall.AcceptEx(l.sock.handle, sock.handle, &addrbuf[0], 0, addrlen, addrlen, &bytes, &c.o)
+	_, err = l.sock.asyncIo(c, nil, bytes, err)
+	if err != nil {
+		return nil, l.opErr("accept", os.NewSyscallError("acceptex", err))
+	}
+	conn := &HvsockConn{
+		sock: sock,
+	}
+	conn.local.fromRaw((*rawHvsockAddr)(unsafe.Pointer(&addrbuf[0])))
+	conn.remote.fromRaw((*rawHvsockAddr)(unsafe.Pointer(&addrbuf[addrlen])))
+	sock = nil
+	return conn, nil
+}
+
+// Close closes the listener, causing any pending Accept calls to fail.
+func (l *HvsockListener) Close() error {
+	return l.sock.Close()
+}
+
+/* Need to finish ConnectEx handling
+func DialHvsock(ctx context.Context, addr *HvsockAddr) (*HvsockConn, error) {
+	sock, err := newHvSocket()
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		if sock != nil {
+			sock.Close()
+		}
+	}()
+	c, err := sock.prepareIo()
+	if err != nil {
+		return nil, err
+	}
+	defer sock.wg.Done()
+	var bytes uint32
+	err = windows.ConnectEx(windows.Handle(sock.handle), sa, nil, 0, &bytes, &c.o)
+	_, err = sock.asyncIo(ctx, c, nil, bytes, err)
+	if err != nil {
+		return nil, err
+	}
+	conn := &HvsockConn{
+		sock:   sock,
+		remote: *addr,
+	}
+	sock = nil
+	return conn, nil
+}
+*/
+
+func (conn *HvsockConn) opErr(op string, err error) error {
+	return &net.OpError{Op: op, Net: "hvsock", Source: &conn.local, Addr: &conn.remote, Err: err}
+}
+
+func (conn *HvsockConn) Read(b []byte) (int, error) {
+	c, err := conn.sock.prepareIo()
+	if err != nil {
+		return 0, conn.opErr("read", err)
+	}
+	defer conn.sock.wg.Done()
+	buf := syscall.WSABuf{Buf: &b[0], Len: uint32(len(b))}
+	var flags, bytes uint32
+	err = syscall.WSARecv(conn.sock.handle, &buf, 1, &bytes, &flags, &c.o, nil)
+	n, err := conn.sock.asyncIo(c, &conn.sock.readDeadline, bytes, err)
+	if err != nil {
+		if _, ok := err.(syscall.Errno); ok {
+			err = os.NewSyscallError("wsarecv", err)
+		}
+		return 0, conn.opErr("read", err)
+	} else if n == 0 {
+		err = io.EOF
+	}
+	return n, err
+}
+
+func (conn *HvsockConn) Write(b []byte) (int, error) {
+	t := 0
+	for len(b) != 0 {
+		n, err := conn.write(b)
+		if err != nil {
+			return t + n, err
+		}
+		t += n
+		b = b[n:]
+	}
+	return t, nil
+}
+
+func (conn *HvsockConn) write(b []byte) (int, error) {
+	c, err := conn.sock.prepareIo()
+	if err != nil {
+		return 0, conn.opErr("write", err)
+	}
+	defer conn.sock.wg.Done()
+	buf := syscall.WSABuf{Buf: &b[0], Len: uint32(len(b))}
+	var bytes uint32
+	err = syscall.WSASend(conn.sock.handle, &buf, 1, &bytes, 0, &c.o, nil)
+	n, err := conn.sock.asyncIo(c, &conn.sock.writeDeadline, bytes, err)
+	if err != nil {
+		if _, ok := err.(syscall.Errno); ok {
+			err = os.NewSyscallError("wsasend", err)
+		}
+		return 0, conn.opErr("write", err)
+	}
+	return n, err
+}
+
+// Close closes the socket connection, failing any pending read or write calls.
+func (conn *HvsockConn) Close() error {
+	return conn.sock.Close()
+}
+
+func (conn *HvsockConn) shutdown(how int) error {
+	err := syscall.Shutdown(conn.sock.handle, syscall.SHUT_RD)
+	if err != nil {
+		return os.NewSyscallError("shutdown", err)
+	}
+	return nil
+}
+
+// CloseRead shuts down the read end of the socket.
+func (conn *HvsockConn) CloseRead() error {
+	err := conn.shutdown(syscall.SHUT_RD)
+	if err != nil {
+		return conn.opErr("close", err)
+	}
+	return nil
+}
+
+// CloseWrite shuts down the write end of the socket, notifying the other endpoint that
+// no more data will be written.
+func (conn *HvsockConn) CloseWrite() error {
+	err := conn.shutdown(syscall.SHUT_WR)
+	if err != nil {
+		return conn.opErr("close", err)
+	}
+	return nil
+}
+
+// LocalAddr returns the local address of the connection.
+func (conn *HvsockConn) LocalAddr() net.Addr {
+	return &conn.local
+}
+
+// RemoteAddr returns the remote address of the connection.
+func (conn *HvsockConn) RemoteAddr() net.Addr {
+	return &conn.remote
+}
+
+// SetDeadline implements the net.Conn SetDeadline method.
+func (conn *HvsockConn) SetDeadline(t time.Time) error {
+	conn.SetReadDeadline(t)
+	conn.SetWriteDeadline(t)
+	return nil
+}
+
+// SetReadDeadline implements the net.Conn SetReadDeadline method.
+func (conn *HvsockConn) SetReadDeadline(t time.Time) error {
+	return conn.sock.SetReadDeadline(t)
+}
+
+// SetWriteDeadline implements the net.Conn SetWriteDeadline method.
+func (conn *HvsockConn) SetWriteDeadline(t time.Time) error {
+	return conn.sock.SetWriteDeadline(t)
+}

vendor/github.com/Microsoft/go-winio/pipe.go

@@ -3,10 +3,13 @@
 package winio
 
 import (
+	"context"
 	"errors"
+	"fmt"
 	"io"
 	"net"
 	"os"
+	"runtime"
 	"syscall"
 	"time"
 	"unsafe"
@@ -18,6 +21,48 @@ import (
 //sys getNamedPipeInfo(pipe syscall.Handle, flags *uint32, outSize *uint32, inSize *uint32, maxInstances *uint32) (err error) = GetNamedPipeInfo
 //sys getNamedPipeHandleState(pipe syscall.Handle, state *uint32, curInstances *uint32, maxCollectionCount *uint32, collectDataTimeout *uint32, userName *uint16, maxUserNameSize uint32) (err error) = GetNamedPipeHandleStateW
 //sys localAlloc(uFlags uint32, length uint32) (ptr uintptr) = LocalAlloc
+//sys ntCreateNamedPipeFile(pipe *syscall.Handle, access uint32, oa *objectAttributes, iosb *ioStatusBlock, share uint32, disposition uint32, options uint32, typ uint32, readMode uint32, completionMode uint32, maxInstances uint32, inboundQuota uint32, outputQuota uint32, timeout *int64) (status ntstatus) = ntdll.NtCreateNamedPipeFile
+//sys rtlNtStatusToDosError(status ntstatus) (winerr error) = ntdll.RtlNtStatusToDosErrorNoTeb
+//sys rtlDosPathNameToNtPathName(name *uint16, ntName *unicodeString, filePart uintptr, reserved uintptr) (status ntstatus) = ntdll.RtlDosPathNameToNtPathName_U
+//sys rtlDefaultNpAcl(dacl *uintptr) (status ntstatus) = ntdll.RtlDefaultNpAcl
+
+type ioStatusBlock struct {
+	Status, Information uintptr
+}
+
+type objectAttributes struct {
+	Length             uintptr
+	RootDirectory      uintptr
+	ObjectName         *unicodeString
+	Attributes         uintptr
+	SecurityDescriptor *securityDescriptor
+	SecurityQoS        uintptr
+}
+
+type unicodeString struct {
+	Length        uint16
+	MaximumLength uint16
+	Buffer        uintptr
+}
+
+type securityDescriptor struct {
+	Revision byte
+	Sbz1     byte
+	Control  uint16
+	Owner    uintptr
+	Group    uintptr
+	Sacl     uintptr
+	Dacl     uintptr
+}
+
+type ntstatus int32
+
+func (status ntstatus) Err() error {
+	if status >= 0 {
+		return nil
+	}
+	return rtlNtStatusToDosError(status)
+}
 
 const (
 	cERROR_PIPE_BUSY      = syscall.Errno(231)
@@ -25,21 +70,20 @@ const (
 	cERROR_PIPE_CONNECTED = syscall.Errno(535)
 	cERROR_SEM_TIMEOUT    = syscall.Errno(121)
 
-	cPIPE_ACCESS_DUPLEX            = 0x3
+	cSECURITY_SQOS_PRESENT = 0x100000
-	cFILE_FLAG_FIRST_PIPE_INSTANCE = 0x80000
+	cSECURITY_ANONYMOUS    = 0
-	cSECURITY_SQOS_PRESENT         = 0x100000
-	cSECURITY_ANONYMOUS            = 0
-
-	cPIPE_REJECT_REMOTE_CLIENTS = 0x8
-
-	cPIPE_UNLIMITED_INSTANCES = 255
-
-	cNMPWAIT_USE_DEFAULT_WAIT = 0
-	cNMPWAIT_NOWAIT           = 1
 
 	cPIPE_TYPE_MESSAGE = 4
 
 	cPIPE_READMODE_MESSAGE = 2
+
+	cFILE_OPEN   = 1
+	cFILE_CREATE = 2
+
+	cFILE_PIPE_MESSAGE_TYPE          = 1
+	cFILE_PIPE_REJECT_REMOTE_CLIENTS = 2
+
+	cSE_DACL_PRESENT = 4
 )
 
 var (
@@ -137,9 +181,30 @@ func (s pipeAddress) String() string {
 	return string(s)
 }
 
+// tryDialPipe attempts to dial the pipe at `path` until `ctx` cancellation or timeout.
+func tryDialPipe(ctx context.Context, path *string) (syscall.Handle, error) {
+	for {
+		select {
+		case <-ctx.Done():
+			return syscall.Handle(0), ctx.Err()
+		default:
+			h, err := createFile(*path, syscall.GENERIC_READ|syscall.GENERIC_WRITE, 0, nil, syscall.OPEN_EXISTING, syscall.FILE_FLAG_OVERLAPPED|cSECURITY_SQOS_PRESENT|cSECURITY_ANONYMOUS, 0)
+			if err == nil {
+				return h, nil
+			}
+			if err != cERROR_PIPE_BUSY {
+				return h, &os.PathError{Err: err, Op: "open", Path: *path}
+			}
+			// Wait 10 msec and try again. This is a rather simplistic
+			// view, as we always try each 10 milliseconds.
+			time.Sleep(time.Millisecond * 10)
+		}
+	}
+}
+
 // DialPipe connects to a named pipe by path, timing out if the connection
 // takes longer than the specified duration. If timeout is nil, then we use
-// a default timeout of 5 seconds.  (We do not use WaitNamedPipe.)
+// a default timeout of 2 seconds.  (We do not use WaitNamedPipe.)
 func DialPipe(path string, timeout *time.Duration) (net.Conn, error) {
 	var absTimeout time.Time
 	if timeout != nil {
@@ -147,23 +212,22 @@ func DialPipe(path string, timeout *time.Duration) (net.Conn, error) {
 	} else {
 		absTimeout = time.Now().Add(time.Second * 2)
 	}
+	ctx, _ := context.WithDeadline(context.Background(), absTimeout)
+	conn, err := DialPipeContext(ctx, path)
+	if err == context.DeadlineExceeded {
+		return nil, ErrTimeout
+	}
+	return conn, err
+}
+
+// DialPipeContext attempts to connect to a named pipe by `path` until `ctx`
+// cancellation or timeout.
+func DialPipeContext(ctx context.Context, path string) (net.Conn, error) {
 	var err error
 	var h syscall.Handle
-	for {
+	h, err = tryDialPipe(ctx, &path)
-		h, err = createFile(path, syscall.GENERIC_READ|syscall.GENERIC_WRITE, 0, nil, syscall.OPEN_EXISTING, syscall.FILE_FLAG_OVERLAPPED|cSECURITY_SQOS_PRESENT|cSECURITY_ANONYMOUS, 0)
-		if err != cERROR_PIPE_BUSY {
-			break
-		}
-		if time.Now().After(absTimeout) {
-			return nil, ErrTimeout
-		}
-
-		// Wait 10 msec and try again. This is a rather simplistic
-		// view, as we always try each 10 milliseconds.
-		time.Sleep(time.Millisecond * 10)
-	}
 	if err != nil {
-		return nil, &os.PathError{Op: "open", Path: path, Err: err}
+		return nil, err
 	}
 
 	var flags uint32
@@ -194,43 +258,87 @@ type acceptResponse struct {
 }
 
 type win32PipeListener struct {
-	firstHandle        syscall.Handle
+	firstHandle syscall.Handle
-	path               string
+	path        string
-	securityDescriptor []byte
+	config      PipeConfig
-	config             PipeConfig
+	acceptCh    chan (chan acceptResponse)
-	acceptCh           chan (chan acceptResponse)
+	closeCh     chan int
-	closeCh            chan int
+	doneCh      chan int
-	doneCh             chan int
 }
 
-func makeServerPipeHandle(path string, securityDescriptor []byte, c *PipeConfig, first bool) (syscall.Handle, error) {
+func makeServerPipeHandle(path string, sd []byte, c *PipeConfig, first bool) (syscall.Handle, error) {
-	var flags uint32 = cPIPE_ACCESS_DUPLEX | syscall.FILE_FLAG_OVERLAPPED
+	path16, err := syscall.UTF16FromString(path)
-	if first {
-		flags |= cFILE_FLAG_FIRST_PIPE_INSTANCE
-	}
-
-	var mode uint32 = cPIPE_REJECT_REMOTE_CLIENTS
-	if c.MessageMode {
-		mode |= cPIPE_TYPE_MESSAGE
-	}
-
-	sa := &syscall.SecurityAttributes{}
-	sa.Length = uint32(unsafe.Sizeof(*sa))
-	if securityDescriptor != nil {
-		len := uint32(len(securityDescriptor))
-		sa.SecurityDescriptor = localAlloc(0, len)
-		defer localFree(sa.SecurityDescriptor)
-		copy((*[0xffff]byte)(unsafe.Pointer(sa.SecurityDescriptor))[:], securityDescriptor)
-	}
-	h, err := createNamedPipe(path, flags, mode, cPIPE_UNLIMITED_INSTANCES, uint32(c.OutputBufferSize), uint32(c.InputBufferSize), 0, sa)
 	if err != nil {
 		return 0, &os.PathError{Op: "open", Path: path, Err: err}
 	}
+
+	var oa objectAttributes
+	oa.Length = unsafe.Sizeof(oa)
+
+	var ntPath unicodeString
+	if err := rtlDosPathNameToNtPathName(&path16[0], &ntPath, 0, 0).Err(); err != nil {
+		return 0, &os.PathError{Op: "open", Path: path, Err: err}
+	}
+	defer localFree(ntPath.Buffer)
+	oa.ObjectName = &ntPath
+
+	// The security descriptor is only needed for the first pipe.
+	if first {
+		if sd != nil {
+			len := uint32(len(sd))
+			sdb := localAlloc(0, len)
+			defer localFree(sdb)
+			copy((*[0xffff]byte)(unsafe.Pointer(sdb))[:], sd)
+			oa.SecurityDescriptor = (*securityDescriptor)(unsafe.Pointer(sdb))
+		} else {
+			// Construct the default named pipe security descriptor.
+			var dacl uintptr
+			if err := rtlDefaultNpAcl(&dacl).Err(); err != nil {
+				return 0, fmt.Errorf("getting default named pipe ACL: %s", err)
+			}
+			defer localFree(dacl)
+
+			sdb := &securityDescriptor{
+				Revision: 1,
+				Control:  cSE_DACL_PRESENT,
+				Dacl:     dacl,
+			}
+			oa.SecurityDescriptor = sdb
+		}
+	}
+
+	typ := uint32(cFILE_PIPE_REJECT_REMOTE_CLIENTS)
+	if c.MessageMode {
+		typ |= cFILE_PIPE_MESSAGE_TYPE
+	}
+
+	disposition := uint32(cFILE_OPEN)
+	access := uint32(syscall.GENERIC_READ | syscall.GENERIC_WRITE | syscall.SYNCHRONIZE)
+	if first {
+		disposition = cFILE_CREATE
+		// By not asking for read or write access, the named pipe file system
+		// will put this pipe into an initially disconnected state, blocking
+		// client connections until the next call with first == false.
+		access = syscall.SYNCHRONIZE
+	}
+
+	timeout := int64(-50 * 10000) // 50ms
+
+	var (
+		h    syscall.Handle
+		iosb ioStatusBlock
+	)
+	err = ntCreateNamedPipeFile(&h, access, &oa, &iosb, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE, disposition, 0, typ, 0, 0, 0xffffffff, uint32(c.InputBufferSize), uint32(c.OutputBufferSize), &timeout).Err()
+	if err != nil {
+		return 0, &os.PathError{Op: "open", Path: path, Err: err}
+	}
+
+	runtime.KeepAlive(ntPath)
 	return h, nil
 }
 
 func (l *win32PipeListener) makeServerPipe() (*win32File, error) {
-	h, err := makeServerPipeHandle(l.path, l.securityDescriptor, &l.config, false)
+	h, err := makeServerPipeHandle(l.path, nil, &l.config, false)
 	if err != nil {
 		return nil, err
 	}
@@ -341,32 +449,13 @@ func ListenPipe(path string, c *PipeConfig) (net.Listener, error) {
 	if err != nil {
 		return nil, err
 	}
-	// Create a client handle and connect it.  This results in the pipe
-	// instance always existing, so that clients see ERROR_PIPE_BUSY
-	// rather than ERROR_FILE_NOT_FOUND.  This ties the first instance
-	// up so that no other instances can be used.  This would have been
-	// cleaner if the Win32 API matched CreateFile with ConnectNamedPipe
-	// instead of CreateNamedPipe.  (Apparently created named pipes are
-	// considered to be in listening state regardless of whether any
-	// active calls to ConnectNamedPipe are outstanding.)
-	h2, err := createFile(path, 0, 0, nil, syscall.OPEN_EXISTING, cSECURITY_SQOS_PRESENT|cSECURITY_ANONYMOUS, 0)
-	if err != nil {
-		syscall.Close(h)
-		return nil, err
-	}
-	// Close the client handle. The server side of the instance will
-	// still be busy, leading to ERROR_PIPE_BUSY instead of
-	// ERROR_NOT_FOUND, as long as we don't close the server handle,
-	// or disconnect the client with DisconnectNamedPipe.
-	syscall.Close(h2)
 	l := &win32PipeListener{
-		firstHandle:        h,
+		firstHandle: h,
-		path:               path,
+		path:        path,
-		securityDescriptor: sd,
+		config:      *c,
-		config:             *c,
+		acceptCh:    make(chan (chan acceptResponse)),
-		acceptCh:           make(chan (chan acceptResponse)),
+		closeCh:     make(chan int),
-		closeCh:            make(chan int),
+		doneCh:      make(chan int),
-		doneCh:             make(chan int),
 	}
 	go l.listenerRoutine()
 	return l, nil

vendor/github.com/Microsoft/go-winio/pkg/guid/guid.go

@@ -0,0 +1,235 @@
+// Package guid provides a GUID type. The backing structure for a GUID is
+// identical to that used by the golang.org/x/sys/windows GUID type.
+// There are two main binary encodings used for a GUID, the big-endian encoding,
+// and the Windows (mixed-endian) encoding. See here for details:
+// https://en.wikipedia.org/wiki/Universally_unique_identifier#Encoding
+package guid
+
+import (
+	"crypto/rand"
+	"crypto/sha1"
+	"encoding"
+	"encoding/binary"
+	"fmt"
+	"strconv"
+
+	"golang.org/x/sys/windows"
+)
+
+// Variant specifies which GUID variant (or "type") of the GUID. It determines
+// how the entirety of the rest of the GUID is interpreted.
+type Variant uint8
+
+// The variants specified by RFC 4122.
+const (
+	// VariantUnknown specifies a GUID variant which does not conform to one of
+	// the variant encodings specified in RFC 4122.
+	VariantUnknown Variant = iota
+	VariantNCS
+	VariantRFC4122
+	VariantMicrosoft
+	VariantFuture
+)
+
+// Version specifies how the bits in the GUID were generated. For instance, a
+// version 4 GUID is randomly generated, and a version 5 is generated from the
+// hash of an input string.
+type Version uint8
+
+var _ = (encoding.TextMarshaler)(GUID{})
+var _ = (encoding.TextUnmarshaler)(&GUID{})
+
+// GUID represents a GUID/UUID. It has the same structure as
+// golang.org/x/sys/windows.GUID so that it can be used with functions expecting
+// that type. It is defined as its own type so that stringification and
+// marshaling can be supported. The representation matches that used by native
+// Windows code.
+type GUID windows.GUID
+
+// NewV4 returns a new version 4 (pseudorandom) GUID, as defined by RFC 4122.
+func NewV4() (GUID, error) {
+	var b [16]byte
+	if _, err := rand.Read(b[:]); err != nil {
+		return GUID{}, err
+	}
+
+	g := FromArray(b)
+	g.setVersion(4) // Version 4 means randomly generated.
+	g.setVariant(VariantRFC4122)
+
+	return g, nil
+}
+
+// NewV5 returns a new version 5 (generated from a string via SHA-1 hashing)
+// GUID, as defined by RFC 4122. The RFC is unclear on the encoding of the name,
+// and the sample code treats it as a series of bytes, so we do the same here.
+//
+// Some implementations, such as those found on Windows, treat the name as a
+// big-endian UTF16 stream of bytes. If that is desired, the string can be
+// encoded as such before being passed to this function.
+func NewV5(namespace GUID, name []byte) (GUID, error) {
+	b := sha1.New()
+	namespaceBytes := namespace.ToArray()
+	b.Write(namespaceBytes[:])
+	b.Write(name)
+
+	a := [16]byte{}
+	copy(a[:], b.Sum(nil))
+
+	g := FromArray(a)
+	g.setVersion(5) // Version 5 means generated from a string.
+	g.setVariant(VariantRFC4122)
+
+	return g, nil
+}
+
+func fromArray(b [16]byte, order binary.ByteOrder) GUID {
+	var g GUID
+	g.Data1 = order.Uint32(b[0:4])
+	g.Data2 = order.Uint16(b[4:6])
+	g.Data3 = order.Uint16(b[6:8])
+	copy(g.Data4[:], b[8:16])
+	return g
+}
+
+func (g GUID) toArray(order binary.ByteOrder) [16]byte {
+	b := [16]byte{}
+	order.PutUint32(b[0:4], g.Data1)
+	order.PutUint16(b[4:6], g.Data2)
+	order.PutUint16(b[6:8], g.Data3)
+	copy(b[8:16], g.Data4[:])
+	return b
+}
+
+// FromArray constructs a GUID from a big-endian encoding array of 16 bytes.
+func FromArray(b [16]byte) GUID {
+	return fromArray(b, binary.BigEndian)
+}
+
+// ToArray returns an array of 16 bytes representing the GUID in big-endian
+// encoding.
+func (g GUID) ToArray() [16]byte {
+	return g.toArray(binary.BigEndian)
+}
+
+// FromWindowsArray constructs a GUID from a Windows encoding array of bytes.
+func FromWindowsArray(b [16]byte) GUID {
+	return fromArray(b, binary.LittleEndian)
+}
+
+// ToWindowsArray returns an array of 16 bytes representing the GUID in Windows
+// encoding.
+func (g GUID) ToWindowsArray() [16]byte {
+	return g.toArray(binary.LittleEndian)
+}
+
+func (g GUID) String() string {
+	return fmt.Sprintf(
+		"%08x-%04x-%04x-%04x-%012x",
+		g.Data1,
+		g.Data2,
+		g.Data3,
+		g.Data4[:2],
+		g.Data4[2:])
+}
+
+// FromString parses a string containing a GUID and returns the GUID. The only
+// format currently supported is the `xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx`
+// format.
+func FromString(s string) (GUID, error) {
+	if len(s) != 36 {
+		return GUID{}, fmt.Errorf("invalid GUID %q", s)
+	}
+	if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
+		return GUID{}, fmt.Errorf("invalid GUID %q", s)
+	}
+
+	var g GUID
+
+	data1, err := strconv.ParseUint(s[0:8], 16, 32)
+	if err != nil {
+		return GUID{}, fmt.Errorf("invalid GUID %q", s)
+	}
+	g.Data1 = uint32(data1)
+
+	data2, err := strconv.ParseUint(s[9:13], 16, 16)
+	if err != nil {
+		return GUID{}, fmt.Errorf("invalid GUID %q", s)
+	}
+	g.Data2 = uint16(data2)
+
+	data3, err := strconv.ParseUint(s[14:18], 16, 16)
+	if err != nil {
+		return GUID{}, fmt.Errorf("invalid GUID %q", s)
+	}
+	g.Data3 = uint16(data3)
+
+	for i, x := range []int{19, 21, 24, 26, 28, 30, 32, 34} {
+		v, err := strconv.ParseUint(s[x:x+2], 16, 8)
+		if err != nil {
+			return GUID{}, fmt.Errorf("invalid GUID %q", s)
+		}
+		g.Data4[i] = uint8(v)
+	}
+
+	return g, nil
+}
+
+func (g *GUID) setVariant(v Variant) {
+	d := g.Data4[0]
+	switch v {
+	case VariantNCS:
+		d = (d & 0x7f)
+	case VariantRFC4122:
+		d = (d & 0x3f) | 0x80
+	case VariantMicrosoft:
+		d = (d & 0x1f) | 0xc0
+	case VariantFuture:
+		d = (d & 0x0f) | 0xe0
+	case VariantUnknown:
+		fallthrough
+	default:
+		panic(fmt.Sprintf("invalid variant: %d", v))
+	}
+	g.Data4[0] = d
+}
+
+// Variant returns the GUID variant, as defined in RFC 4122.
+func (g GUID) Variant() Variant {
+	b := g.Data4[0]
+	if b&0x80 == 0 {
+		return VariantNCS
+	} else if b&0xc0 == 0x80 {
+		return VariantRFC4122
+	} else if b&0xe0 == 0xc0 {
+		return VariantMicrosoft
+	} else if b&0xe0 == 0xe0 {
+		return VariantFuture
+	}
+	return VariantUnknown
+}
+
+func (g *GUID) setVersion(v Version) {
+	g.Data3 = (g.Data3 & 0x0fff) | (uint16(v) << 12)
+}
+
+// Version returns the GUID version, as defined in RFC 4122.
+func (g GUID) Version() Version {
+	return Version((g.Data3 & 0xF000) >> 12)
+}
+
+// MarshalText returns the textual representation of the GUID.
+func (g GUID) MarshalText() ([]byte, error) {
+	return []byte(g.String()), nil
+}
+
+// UnmarshalText takes the textual representation of a GUID, and unmarhals it
+// into this GUID.
+func (g *GUID) UnmarshalText(text []byte) error {
+	g2, err := FromString(string(text))
+	if err != nil {
+		return err
+	}
+	*g = g2
+	return nil
+}

vendor/github.com/Microsoft/go-winio/syscall.go

@@ -1,3 +1,3 @@
 package winio
 
-//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go file.go pipe.go sd.go fileinfo.go privilege.go backup.go
+//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zsyscall_windows.go file.go pipe.go sd.go fileinfo.go privilege.go backup.go hvsock.go

vendor/github.com/Microsoft/go-winio/zsyscall_windows.go

@@ -1,4 +1,4 @@
-// MACHINE GENERATED BY 'go generate' COMMAND; DO NOT EDIT
+// Code generated by 'go generate'; DO NOT EDIT.
 
 package winio
 
@@ -38,19 +38,25 @@ func errnoErr(e syscall.Errno) error {
 
 var (
 	modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
+	modws2_32   = windows.NewLazySystemDLL("ws2_32.dll")
+	modntdll    = windows.NewLazySystemDLL("ntdll.dll")
 	modadvapi32 = windows.NewLazySystemDLL("advapi32.dll")
 
 	procCancelIoEx                                           = modkernel32.NewProc("CancelIoEx")
 	procCreateIoCompletionPort                               = modkernel32.NewProc("CreateIoCompletionPort")
 	procGetQueuedCompletionStatus                            = modkernel32.NewProc("GetQueuedCompletionStatus")
 	procSetFileCompletionNotificationModes                   = modkernel32.NewProc("SetFileCompletionNotificationModes")
+	procWSAGetOverlappedResult                               = modws2_32.NewProc("WSAGetOverlappedResult")
 	procConnectNamedPipe                                     = modkernel32.NewProc("ConnectNamedPipe")
 	procCreateNamedPipeW                                     = modkernel32.NewProc("CreateNamedPipeW")
 	procCreateFileW                                          = modkernel32.NewProc("CreateFileW")
-	procWaitNamedPipeW                                       = modkernel32.NewProc("WaitNamedPipeW")
 	procGetNamedPipeInfo                                     = modkernel32.NewProc("GetNamedPipeInfo")
 	procGetNamedPipeHandleStateW                             = modkernel32.NewProc("GetNamedPipeHandleStateW")
 	procLocalAlloc                                           = modkernel32.NewProc("LocalAlloc")
+	procNtCreateNamedPipeFile                                = modntdll.NewProc("NtCreateNamedPipeFile")
+	procRtlNtStatusToDosErrorNoTeb                           = modntdll.NewProc("RtlNtStatusToDosErrorNoTeb")
+	procRtlDosPathNameToNtPathName_U                         = modntdll.NewProc("RtlDosPathNameToNtPathName_U")
+	procRtlDefaultNpAcl                                      = modntdll.NewProc("RtlDefaultNpAcl")
 	procLookupAccountNameW                                   = modadvapi32.NewProc("LookupAccountNameW")
 	procConvertSidToStringSidW                               = modadvapi32.NewProc("ConvertSidToStringSidW")
 	procConvertStringSecurityDescriptorToSecurityDescriptorW = modadvapi32.NewProc("ConvertStringSecurityDescriptorToSecurityDescriptorW")
@@ -69,6 +75,7 @@ var (
 	procLookupPrivilegeDisplayNameW                          = modadvapi32.NewProc("LookupPrivilegeDisplayNameW")
 	procBackupRead                                           = modkernel32.NewProc("BackupRead")
 	procBackupWrite                                          = modkernel32.NewProc("BackupWrite")
+	procbind                                                 = modws2_32.NewProc("bind")
 )
 
 func cancelIoEx(file syscall.Handle, o *syscall.Overlapped) (err error) {
@@ -120,6 +127,24 @@ func setFileCompletionNotificationModes(h syscall.Handle, flags uint8) (err erro
 	return
 }
 
+func wsaGetOverlappedResult(h syscall.Handle, o *syscall.Overlapped, bytes *uint32, wait bool, flags *uint32) (err error) {
+	var _p0 uint32
+	if wait {
+		_p0 = 1
+	} else {
+		_p0 = 0
+	}
+	r1, _, e1 := syscall.Syscall6(procWSAGetOverlappedResult.Addr(), 5, uintptr(h), uintptr(unsafe.Pointer(o)), uintptr(unsafe.Pointer(bytes)), uintptr(_p0), uintptr(unsafe.Pointer(flags)), 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
 func connectNamedPipe(pipe syscall.Handle, o *syscall.Overlapped) (err error) {
 	r1, _, e1 := syscall.Syscall(procConnectNamedPipe.Addr(), 2, uintptr(pipe), uintptr(unsafe.Pointer(o)), 0)
 	if r1 == 0 {
@@ -176,27 +201,6 @@ func _createFile(name *uint16, access uint32, mode uint32, sa *syscall.SecurityA
 	return
 }
 
-func waitNamedPipe(name string, timeout uint32) (err error) {
-	var _p0 *uint16
-	_p0, err = syscall.UTF16PtrFromString(name)
-	if err != nil {
-		return
-	}
-	return _waitNamedPipe(_p0, timeout)
-}
-
-func _waitNamedPipe(name *uint16, timeout uint32) (err error) {
-	r1, _, e1 := syscall.Syscall(procWaitNamedPipeW.Addr(), 2, uintptr(unsafe.Pointer(name)), uintptr(timeout), 0)
-	if r1 == 0 {
-		if e1 != 0 {
-			err = errnoErr(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
 func getNamedPipeInfo(pipe syscall.Handle, flags *uint32, outSize *uint32, inSize *uint32, maxInstances *uint32) (err error) {
 	r1, _, e1 := syscall.Syscall6(procGetNamedPipeInfo.Addr(), 5, uintptr(pipe), uintptr(unsafe.Pointer(flags)), uintptr(unsafe.Pointer(outSize)), uintptr(unsafe.Pointer(inSize)), uintptr(unsafe.Pointer(maxInstances)), 0)
 	if r1 == 0 {
@@ -227,6 +231,32 @@ func localAlloc(uFlags uint32, length uint32) (ptr uintptr) {
 	return
 }
 
+func ntCreateNamedPipeFile(pipe *syscall.Handle, access uint32, oa *objectAttributes, iosb *ioStatusBlock, share uint32, disposition uint32, options uint32, typ uint32, readMode uint32, completionMode uint32, maxInstances uint32, inboundQuota uint32, outputQuota uint32, timeout *int64) (status ntstatus) {
+	r0, _, _ := syscall.Syscall15(procNtCreateNamedPipeFile.Addr(), 14, uintptr(unsafe.Pointer(pipe)), uintptr(access), uintptr(unsafe.Pointer(oa)), uintptr(unsafe.Pointer(iosb)), uintptr(share), uintptr(disposition), uintptr(options), uintptr(typ), uintptr(readMode), uintptr(completionMode), uintptr(maxInstances), uintptr(inboundQuota), uintptr(outputQuota), uintptr(unsafe.Pointer(timeout)), 0)
+	status = ntstatus(r0)
+	return
+}
+
+func rtlNtStatusToDosError(status ntstatus) (winerr error) {
+	r0, _, _ := syscall.Syscall(procRtlNtStatusToDosErrorNoTeb.Addr(), 1, uintptr(status), 0, 0)
+	if r0 != 0 {
+		winerr = syscall.Errno(r0)
+	}
+	return
+}
+
+func rtlDosPathNameToNtPathName(name *uint16, ntName *unicodeString, filePart uintptr, reserved uintptr) (status ntstatus) {
+	r0, _, _ := syscall.Syscall6(procRtlDosPathNameToNtPathName_U.Addr(), 4, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(ntName)), uintptr(filePart), uintptr(reserved), 0, 0)
+	status = ntstatus(r0)
+	return
+}
+
+func rtlDefaultNpAcl(dacl *uintptr) (status ntstatus) {
+	r0, _, _ := syscall.Syscall(procRtlDefaultNpAcl.Addr(), 1, uintptr(unsafe.Pointer(dacl)), 0, 0)
+	status = ntstatus(r0)
+	return
+}
+
 func lookupAccountName(systemName *uint16, accountName string, sid *byte, sidSize *uint32, refDomain *uint16, refDomainSize *uint32, sidNameUse *uint32) (err error) {
 	var _p0 *uint16
 	_p0, err = syscall.UTF16PtrFromString(accountName)
@@ -518,3 +548,15 @@ func backupWrite(h syscall.Handle, b []byte, bytesWritten *uint32, abort bool, p
 	}
 	return
 }
+
+func bind(s syscall.Handle, name unsafe.Pointer, namelen int32) (err error) {
+	r1, _, e1 := syscall.Syscall(procbind.Addr(), 3, uintptr(s), uintptr(name), uintptr(namelen))
+	if r1 == socketError {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}

vendor/github.com/Microsoft/hcsshim/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Microsoft
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/Microsoft/hcsshim/osversion/osversion_windows.go

@@ -0,0 +1,57 @@
+package osversion
+
+import (
+	"fmt"
+
+	"golang.org/x/sys/windows"
+)
+
+// OSVersion is a wrapper for Windows version information
+// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx
+type OSVersion struct {
+	Version      uint32
+	MajorVersion uint8
+	MinorVersion uint8
+	Build        uint16
+}
+
+// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724833(v=vs.85).aspx
+type osVersionInfoEx struct {
+	OSVersionInfoSize uint32
+	MajorVersion      uint32
+	MinorVersion      uint32
+	BuildNumber       uint32
+	PlatformID        uint32
+	CSDVersion        [128]uint16
+	ServicePackMajor  uint16
+	ServicePackMinor  uint16
+	SuiteMask         uint16
+	ProductType       byte
+	Reserve           byte
+}
+
+// Get gets the operating system version on Windows.
+// The calling application must be manifested to get the correct version information.
+func Get() OSVersion {
+	var err error
+	osv := OSVersion{}
+	osv.Version, err = windows.GetVersion()
+	if err != nil {
+		// GetVersion never fails.
+		panic(err)
+	}
+	osv.MajorVersion = uint8(osv.Version & 0xFF)
+	osv.MinorVersion = uint8(osv.Version >> 8 & 0xFF)
+	osv.Build = uint16(osv.Version >> 16)
+	return osv
+}
+
+// Build gets the build-number on Windows
+// The calling application must be manifested to get the correct version information.
+func Build() uint16 {
+	return Get().Build
+}
+
+func (osv OSVersion) ToString() string {
+	return fmt.Sprintf("%d.%d.%d", osv.MajorVersion, osv.MinorVersion, osv.Build)
+}

vendor/github.com/Microsoft/hcsshim/osversion/windowsbuilds.go

@@ -0,0 +1,27 @@
+package osversion
+
+const (
+	// RS1 (version 1607, codename "Redstone 1") corresponds to Windows Server
+	// 2016 (ltsc2016) and Windows 10 (Anniversary Update).
+	RS1 = 14393
+
+	// RS2 (version 1703, codename "Redstone 2") was a client-only update, and
+	// corresponds to Windows 10 (Creators Update).
+	RS2 = 15063
+
+	// RS3 (version 1709, codename "Redstone 3") corresponds to Windows Server
+	// 1709 (Semi-Annual Channel (SAC)), and Windows 10 (Fall Creators Update).
+	RS3 = 16299
+
+	// RS4 (version 1803, codename "Redstone 4") corresponds to Windows Server
+	// 1803 (Semi-Annual Channel (SAC)), and Windows 10 (April 2018 Update).
+	RS4 = 17134
+
+	// RS5 (version 1809, codename "Redstone 5") corresponds to Windows Server
+	// 2019 (ltsc2019), and Windows 10 (October 2018 Update).
+	RS5 = 17763
+
+	// V19H1 (version 1903) corresponds to Windows Server 1903 (semi-annual
+	// channel).
+	V19H1 = 18362
+)

vendor/github.com/containerd/containerd/LICENSE

@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        https://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright The containerd Authors
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/github.com/containerd/containerd/NOTICE

@@ -0,0 +1,16 @@
+Docker
+Copyright 2012-2015 Docker, Inc.
+
+This product includes software developed at Docker, Inc. (https://www.docker.com).
+
+The following is courtesy of our legal counsel:
+
+
+Use and transfer of Docker may be subject to certain restrictions by the
+United States and other governments.
+It is your responsibility to ensure that your use and/or transfer does not
+violate applicable laws.
+
+For more information, please see https://www.bis.doc.gov
+
+See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

vendor/github.com/containerd/containerd/errdefs/errors.go

@@ -0,0 +1,93 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+// Package errdefs defines the common errors used throughout containerd
+// packages.
+//
+// Use with errors.Wrap and error.Wrapf to add context to an error.
+//
+// To detect an error class, use the IsXXX functions to tell whether an error
+// is of a certain type.
+//
+// The functions ToGRPC and FromGRPC can be used to map server-side and
+// client-side errors to the correct types.
+package errdefs
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+)
+
+// Definitions of common error types used throughout containerd. All containerd
+// errors returned by most packages will map into one of these errors classes.
+// Packages should return errors of these types when they want to instruct a
+// client to take a particular action.
+//
+// For the most part, we just try to provide local grpc errors. Most conditions
+// map very well to those defined by grpc.
+var (
+	ErrUnknown            = errors.New("unknown") // used internally to represent a missed mapping.
+	ErrInvalidArgument    = errors.New("invalid argument")
+	ErrNotFound           = errors.New("not found")
+	ErrAlreadyExists      = errors.New("already exists")
+	ErrFailedPrecondition = errors.New("failed precondition")
+	ErrUnavailable        = errors.New("unavailable")
+	ErrNotImplemented     = errors.New("not implemented") // represents not supported and unimplemented
+)
+
+// IsInvalidArgument returns true if the error is due to an invalid argument
+func IsInvalidArgument(err error) bool {
+	return errors.Cause(err) == ErrInvalidArgument
+}
+
+// IsNotFound returns true if the error is due to a missing object
+func IsNotFound(err error) bool {
+	return errors.Cause(err) == ErrNotFound
+}
+
+// IsAlreadyExists returns true if the error is due to an already existing
+// metadata item
+func IsAlreadyExists(err error) bool {
+	return errors.Cause(err) == ErrAlreadyExists
+}
+
+// IsFailedPrecondition returns true if an operation could not proceed to the
+// lack of a particular condition
+func IsFailedPrecondition(err error) bool {
+	return errors.Cause(err) == ErrFailedPrecondition
+}
+
+// IsUnavailable returns true if the error is due to a resource being unavailable
+func IsUnavailable(err error) bool {
+	return errors.Cause(err) == ErrUnavailable
+}
+
+// IsNotImplemented returns true if the error is due to not being implemented
+func IsNotImplemented(err error) bool {
+	return errors.Cause(err) == ErrNotImplemented
+}
+
+// IsCanceled returns true if the error is due to `context.Canceled`.
+func IsCanceled(err error) bool {
+	return errors.Cause(err) == context.Canceled
+}
+
+// IsDeadlineExceeded returns true if the error is due to
+// `context.DeadlineExceeded`.
+func IsDeadlineExceeded(err error) bool {
+	return errors.Cause(err) == context.DeadlineExceeded
+}

vendor/github.com/containerd/containerd/errdefs/grpc.go

@@ -0,0 +1,147 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package errdefs
+
+import (
+	"context"
+	"strings"
+
+	"github.com/pkg/errors"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+// ToGRPC will attempt to map the backend containerd error into a grpc error,
+// using the original error message as a description.
+//
+// Further information may be extracted from certain errors depending on their
+// type.
+//
+// If the error is unmapped, the original error will be returned to be handled
+// by the regular grpc error handling stack.
+func ToGRPC(err error) error {
+	if err == nil {
+		return nil
+	}
+
+	if isGRPCError(err) {
+		// error has already been mapped to grpc
+		return err
+	}
+
+	switch {
+	case IsInvalidArgument(err):
+		return status.Errorf(codes.InvalidArgument, err.Error())
+	case IsNotFound(err):
+		return status.Errorf(codes.NotFound, err.Error())
+	case IsAlreadyExists(err):
+		return status.Errorf(codes.AlreadyExists, err.Error())
+	case IsFailedPrecondition(err):
+		return status.Errorf(codes.FailedPrecondition, err.Error())
+	case IsUnavailable(err):
+		return status.Errorf(codes.Unavailable, err.Error())
+	case IsNotImplemented(err):
+		return status.Errorf(codes.Unimplemented, err.Error())
+	case IsCanceled(err):
+		return status.Errorf(codes.Canceled, err.Error())
+	case IsDeadlineExceeded(err):
+		return status.Errorf(codes.DeadlineExceeded, err.Error())
+	}
+
+	return err
+}
+
+// ToGRPCf maps the error to grpc error codes, assembling the formatting string
+// and combining it with the target error string.
+//
+// This is equivalent to errors.ToGRPC(errors.Wrapf(err, format, args...))
+func ToGRPCf(err error, format string, args ...interface{}) error {
+	return ToGRPC(errors.Wrapf(err, format, args...))
+}
+
+// FromGRPC returns the underlying error from a grpc service based on the grpc error code
+func FromGRPC(err error) error {
+	if err == nil {
+		return nil
+	}
+
+	var cls error // divide these into error classes, becomes the cause
+
+	switch code(err) {
+	case codes.InvalidArgument:
+		cls = ErrInvalidArgument
+	case codes.AlreadyExists:
+		cls = ErrAlreadyExists
+	case codes.NotFound:
+		cls = ErrNotFound
+	case codes.Unavailable:
+		cls = ErrUnavailable
+	case codes.FailedPrecondition:
+		cls = ErrFailedPrecondition
+	case codes.Unimplemented:
+		cls = ErrNotImplemented
+	case codes.Canceled:
+		cls = context.Canceled
+	case codes.DeadlineExceeded:
+		cls = context.DeadlineExceeded
+	default:
+		cls = ErrUnknown
+	}
+
+	msg := rebaseMessage(cls, err)
+	if msg != "" {
+		err = errors.Wrap(cls, msg)
+	} else {
+		err = errors.WithStack(cls)
+	}
+
+	return err
+}
+
+// rebaseMessage removes the repeats for an error at the end of an error
+// string. This will happen when taking an error over grpc then remapping it.
+//
+// Effectively, we just remove the string of cls from the end of err if it
+// appears there.
+func rebaseMessage(cls error, err error) string {
+	desc := errDesc(err)
+	clss := cls.Error()
+	if desc == clss {
+		return ""
+	}
+
+	return strings.TrimSuffix(desc, ": "+clss)
+}
+
+func isGRPCError(err error) bool {
+	_, ok := status.FromError(err)
+	return ok
+}
+
+func code(err error) codes.Code {
+	if s, ok := status.FromError(err); ok {
+		return s.Code()
+	}
+	return codes.Unknown
+}
+
+func errDesc(err error) string {
+	if s, ok := status.FromError(err); ok {
+		return s.Message()
+	}
+	return err.Error()
+}

vendor/github.com/containerd/continuity/fs/copy.go

@@ -0,0 +1,172 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sync"
+
+	"github.com/pkg/errors"
+)
+
+var bufferPool = &sync.Pool{
+	New: func() interface{} {
+		buffer := make([]byte, 32*1024)
+		return &buffer
+	},
+}
+
+// XAttrErrorHandlers transform a non-nil xattr error.
+// Return nil to ignore an error.
+// xattrKey can be empty for listxattr operation.
+type XAttrErrorHandler func(dst, src, xattrKey string, err error) error
+
+type copyDirOpts struct {
+	xeh XAttrErrorHandler
+}
+
+type CopyDirOpt func(*copyDirOpts) error
+
+// WithXAttrErrorHandler allows specifying XAttrErrorHandler
+// If nil XAttrErrorHandler is specified (default), CopyDir stops
+// on a non-nil xattr error.
+func WithXAttrErrorHandler(xeh XAttrErrorHandler) CopyDirOpt {
+	return func(o *copyDirOpts) error {
+		o.xeh = xeh
+		return nil
+	}
+}
+
+// WithAllowXAttrErrors allows ignoring xattr errors.
+func WithAllowXAttrErrors() CopyDirOpt {
+	xeh := func(dst, src, xattrKey string, err error) error {
+		return nil
+	}
+	return WithXAttrErrorHandler(xeh)
+}
+
+// CopyDir copies the directory from src to dst.
+// Most efficient copy of files is attempted.
+func CopyDir(dst, src string, opts ...CopyDirOpt) error {
+	var o copyDirOpts
+	for _, opt := range opts {
+		if err := opt(&o); err != nil {
+			return err
+		}
+	}
+	inodes := map[uint64]string{}
+	return copyDirectory(dst, src, inodes, &o)
+}
+
+func copyDirectory(dst, src string, inodes map[uint64]string, o *copyDirOpts) error {
+	stat, err := os.Stat(src)
+	if err != nil {
+		return errors.Wrapf(err, "failed to stat %s", src)
+	}
+	if !stat.IsDir() {
+		return errors.Errorf("source is not directory")
+	}
+
+	if st, err := os.Stat(dst); err != nil {
+		if err := os.Mkdir(dst, stat.Mode()); err != nil {
+			return errors.Wrapf(err, "failed to mkdir %s", dst)
+		}
+	} else if !st.IsDir() {
+		return errors.Errorf("cannot copy to non-directory: %s", dst)
+	} else {
+		if err := os.Chmod(dst, stat.Mode()); err != nil {
+			return errors.Wrapf(err, "failed to chmod on %s", dst)
+		}
+	}
+
+	fis, err := ioutil.ReadDir(src)
+	if err != nil {
+		return errors.Wrapf(err, "failed to read %s", src)
+	}
+
+	if err := copyFileInfo(stat, dst); err != nil {
+		return errors.Wrapf(err, "failed to copy file info for %s", dst)
+	}
+
+	for _, fi := range fis {
+		source := filepath.Join(src, fi.Name())
+		target := filepath.Join(dst, fi.Name())
+
+		switch {
+		case fi.IsDir():
+			if err := copyDirectory(target, source, inodes, o); err != nil {
+				return err
+			}
+			continue
+		case (fi.Mode() & os.ModeType) == 0:
+			link, err := getLinkSource(target, fi, inodes)
+			if err != nil {
+				return errors.Wrap(err, "failed to get hardlink")
+			}
+			if link != "" {
+				if err := os.Link(link, target); err != nil {
+					return errors.Wrap(err, "failed to create hard link")
+				}
+			} else if err := CopyFile(target, source); err != nil {
+				return errors.Wrap(err, "failed to copy files")
+			}
+		case (fi.Mode() & os.ModeSymlink) == os.ModeSymlink:
+			link, err := os.Readlink(source)
+			if err != nil {
+				return errors.Wrapf(err, "failed to read link: %s", source)
+			}
+			if err := os.Symlink(link, target); err != nil {
+				return errors.Wrapf(err, "failed to create symlink: %s", target)
+			}
+		case (fi.Mode() & os.ModeDevice) == os.ModeDevice:
+			if err := copyDevice(target, fi); err != nil {
+				return errors.Wrapf(err, "failed to create device")
+			}
+		default:
+			// TODO: Support pipes and sockets
+			return errors.Wrapf(err, "unsupported mode %s", fi.Mode())
+		}
+		if err := copyFileInfo(fi, target); err != nil {
+			return errors.Wrap(err, "failed to copy file info")
+		}
+
+		if err := copyXAttrs(target, source, o.xeh); err != nil {
+			return errors.Wrap(err, "failed to copy xattrs")
+		}
+	}
+
+	return nil
+}
+
+// CopyFile copies the source file to the target.
+// The most efficient means of copying is used for the platform.
+func CopyFile(target, source string) error {
+	src, err := os.Open(source)
+	if err != nil {
+		return errors.Wrapf(err, "failed to open source %s", source)
+	}
+	defer src.Close()
+	tgt, err := os.Create(target)
+	if err != nil {
+		return errors.Wrapf(err, "failed to open target %s", target)
+	}
+	defer tgt.Close()
+
+	return copyFileContent(tgt, src)
+}

vendor/github.com/containerd/continuity/fs/copy_linux.go

@@ -0,0 +1,144 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"io"
+	"os"
+	"syscall"
+
+	"github.com/containerd/continuity/sysx"
+	"github.com/pkg/errors"
+	"golang.org/x/sys/unix"
+)
+
+func copyFileInfo(fi os.FileInfo, name string) error {
+	st := fi.Sys().(*syscall.Stat_t)
+	if err := os.Lchown(name, int(st.Uid), int(st.Gid)); err != nil {
+		if os.IsPermission(err) {
+			// Normally if uid/gid are the same this would be a no-op, but some
+			// filesystems may still return EPERM... for instance NFS does this.
+			// In such a case, this is not an error.
+			if dstStat, err2 := os.Lstat(name); err2 == nil {
+				st2 := dstStat.Sys().(*syscall.Stat_t)
+				if st.Uid == st2.Uid && st.Gid == st2.Gid {
+					err = nil
+				}
+			}
+		}
+		if err != nil {
+			return errors.Wrapf(err, "failed to chown %s", name)
+		}
+	}
+
+	if (fi.Mode() & os.ModeSymlink) != os.ModeSymlink {
+		if err := os.Chmod(name, fi.Mode()); err != nil {
+			return errors.Wrapf(err, "failed to chmod %s", name)
+		}
+	}
+
+	timespec := []unix.Timespec{unix.Timespec(StatAtime(st)), unix.Timespec(StatMtime(st))}
+	if err := unix.UtimesNanoAt(unix.AT_FDCWD, name, timespec, unix.AT_SYMLINK_NOFOLLOW); err != nil {
+		return errors.Wrapf(err, "failed to utime %s", name)
+	}
+
+	return nil
+}
+
+const maxSSizeT = int64(^uint(0) >> 1)
+
+func copyFileContent(dst, src *os.File) error {
+	st, err := src.Stat()
+	if err != nil {
+		return errors.Wrap(err, "unable to stat source")
+	}
+
+	size := st.Size()
+	first := true
+	srcFd := int(src.Fd())
+	dstFd := int(dst.Fd())
+
+	for size > 0 {
+		// Ensure that we are never trying to copy more than SSIZE_MAX at a
+		// time and at the same time avoids overflows when the file is larger
+		// than 4GB on 32-bit systems.
+		var copySize int
+		if size > maxSSizeT {
+			copySize = int(maxSSizeT)
+		} else {
+			copySize = int(size)
+		}
+		n, err := unix.CopyFileRange(srcFd, nil, dstFd, nil, copySize, 0)
+		if err != nil {
+			if (err != unix.ENOSYS && err != unix.EXDEV) || !first {
+				return errors.Wrap(err, "copy file range failed")
+			}
+
+			buf := bufferPool.Get().(*[]byte)
+			_, err = io.CopyBuffer(dst, src, *buf)
+			bufferPool.Put(buf)
+			return errors.Wrap(err, "userspace copy failed")
+		}
+
+		first = false
+		size -= int64(n)
+	}
+
+	return nil
+}
+
+func copyXAttrs(dst, src string, xeh XAttrErrorHandler) error {
+	xattrKeys, err := sysx.LListxattr(src)
+	if err != nil {
+		e := errors.Wrapf(err, "failed to list xattrs on %s", src)
+		if xeh != nil {
+			e = xeh(dst, src, "", e)
+		}
+		return e
+	}
+	for _, xattr := range xattrKeys {
+		data, err := sysx.LGetxattr(src, xattr)
+		if err != nil {
+			e := errors.Wrapf(err, "failed to get xattr %q on %s", xattr, src)
+			if xeh != nil {
+				if e = xeh(dst, src, xattr, e); e == nil {
+					continue
+				}
+			}
+			return e
+		}
+		if err := sysx.LSetxattr(dst, xattr, data, 0); err != nil {
+			e := errors.Wrapf(err, "failed to set xattr %q on %s", xattr, dst)
+			if xeh != nil {
+				if e = xeh(dst, src, xattr, e); e == nil {
+					continue
+				}
+			}
+			return e
+		}
+	}
+
+	return nil
+}
+
+func copyDevice(dst string, fi os.FileInfo) error {
+	st, ok := fi.Sys().(*syscall.Stat_t)
+	if !ok {
+		return errors.New("unsupported stat type")
+	}
+	return unix.Mknod(dst, uint32(fi.Mode()), int(st.Rdev))
+}

vendor/github.com/containerd/continuity/fs/copy_unix.go

@@ -0,0 +1,112 @@
+// +build solaris darwin freebsd
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"io"
+	"os"
+	"syscall"
+
+	"github.com/containerd/continuity/sysx"
+	"github.com/pkg/errors"
+	"golang.org/x/sys/unix"
+)
+
+func copyFileInfo(fi os.FileInfo, name string) error {
+	st := fi.Sys().(*syscall.Stat_t)
+	if err := os.Lchown(name, int(st.Uid), int(st.Gid)); err != nil {
+		if os.IsPermission(err) {
+			// Normally if uid/gid are the same this would be a no-op, but some
+			// filesystems may still return EPERM... for instance NFS does this.
+			// In such a case, this is not an error.
+			if dstStat, err2 := os.Lstat(name); err2 == nil {
+				st2 := dstStat.Sys().(*syscall.Stat_t)
+				if st.Uid == st2.Uid && st.Gid == st2.Gid {
+					err = nil
+				}
+			}
+		}
+		if err != nil {
+			return errors.Wrapf(err, "failed to chown %s", name)
+		}
+	}
+
+	if (fi.Mode() & os.ModeSymlink) != os.ModeSymlink {
+		if err := os.Chmod(name, fi.Mode()); err != nil {
+			return errors.Wrapf(err, "failed to chmod %s", name)
+		}
+	}
+
+	timespec := []syscall.Timespec{StatAtime(st), StatMtime(st)}
+	if err := syscall.UtimesNano(name, timespec); err != nil {
+		return errors.Wrapf(err, "failed to utime %s", name)
+	}
+
+	return nil
+}
+
+func copyFileContent(dst, src *os.File) error {
+	buf := bufferPool.Get().(*[]byte)
+	_, err := io.CopyBuffer(dst, src, *buf)
+	bufferPool.Put(buf)
+
+	return err
+}
+
+func copyXAttrs(dst, src string, xeh XAttrErrorHandler) error {
+	xattrKeys, err := sysx.LListxattr(src)
+	if err != nil {
+		e := errors.Wrapf(err, "failed to list xattrs on %s", src)
+		if xeh != nil {
+			e = xeh(dst, src, "", e)
+		}
+		return e
+	}
+	for _, xattr := range xattrKeys {
+		data, err := sysx.LGetxattr(src, xattr)
+		if err != nil {
+			e := errors.Wrapf(err, "failed to get xattr %q on %s", xattr, src)
+			if xeh != nil {
+				if e = xeh(dst, src, xattr, e); e == nil {
+					continue
+				}
+			}
+			return e
+		}
+		if err := sysx.LSetxattr(dst, xattr, data, 0); err != nil {
+			e := errors.Wrapf(err, "failed to set xattr %q on %s", xattr, dst)
+			if xeh != nil {
+				if e = xeh(dst, src, xattr, e); e == nil {
+					continue
+				}
+			}
+			return e
+		}
+	}
+
+	return nil
+}
+
+func copyDevice(dst string, fi os.FileInfo) error {
+	st, ok := fi.Sys().(*syscall.Stat_t)
+	if !ok {
+		return errors.New("unsupported stat type")
+	}
+	return unix.Mknod(dst, uint32(fi.Mode()), int(st.Rdev))
+}

vendor/github.com/containerd/continuity/fs/copy_windows.go

@@ -0,0 +1,49 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"io"
+	"os"
+
+	"github.com/pkg/errors"
+)
+
+func copyFileInfo(fi os.FileInfo, name string) error {
+	if err := os.Chmod(name, fi.Mode()); err != nil {
+		return errors.Wrapf(err, "failed to chmod %s", name)
+	}
+
+	// TODO: copy windows specific metadata
+
+	return nil
+}
+
+func copyFileContent(dst, src *os.File) error {
+	buf := bufferPool.Get().(*[]byte)
+	_, err := io.CopyBuffer(dst, src, *buf)
+	bufferPool.Put(buf)
+	return err
+}
+
+func copyXAttrs(dst, src string, xeh XAttrErrorHandler) error {
+	return nil
+}
+
+func copyDevice(dst string, fi os.FileInfo) error {
+	return errors.New("device copy not supported")
+}

vendor/github.com/containerd/continuity/fs/diff.go

@@ -0,0 +1,326 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"golang.org/x/sync/errgroup"
+
+	"github.com/sirupsen/logrus"
+)
+
+// ChangeKind is the type of modification that
+// a change is making.
+type ChangeKind int
+
+const (
+	// ChangeKindUnmodified represents an unmodified
+	// file
+	ChangeKindUnmodified = iota
+
+	// ChangeKindAdd represents an addition of
+	// a file
+	ChangeKindAdd
+
+	// ChangeKindModify represents a change to
+	// an existing file
+	ChangeKindModify
+
+	// ChangeKindDelete represents a delete of
+	// a file
+	ChangeKindDelete
+)
+
+func (k ChangeKind) String() string {
+	switch k {
+	case ChangeKindUnmodified:
+		return "unmodified"
+	case ChangeKindAdd:
+		return "add"
+	case ChangeKindModify:
+		return "modify"
+	case ChangeKindDelete:
+		return "delete"
+	default:
+		return ""
+	}
+}
+
+// Change represents single change between a diff and its parent.
+type Change struct {
+	Kind ChangeKind
+	Path string
+}
+
+// ChangeFunc is the type of function called for each change
+// computed during a directory changes calculation.
+type ChangeFunc func(ChangeKind, string, os.FileInfo, error) error
+
+// Changes computes changes between two directories calling the
+// given change function for each computed change. The first
+// directory is intended to the base directory and second
+// directory the changed directory.
+//
+// The change callback is called by the order of path names and
+// should be appliable in that order.
+//  Due to this apply ordering, the following is true
+//  - Removed directory trees only create a single change for the root
+//    directory removed. Remaining changes are implied.
+//  - A directory which is modified to become a file will not have
+//    delete entries for sub-path items, their removal is implied
+//    by the removal of the parent directory.
+//
+// Opaque directories will not be treated specially and each file
+// removed from the base directory will show up as a removal.
+//
+// File content comparisons will be done on files which have timestamps
+// which may have been truncated. If either of the files being compared
+// has a zero value nanosecond value, each byte will be compared for
+// differences. If 2 files have the same seconds value but different
+// nanosecond values where one of those values is zero, the files will
+// be considered unchanged if the content is the same. This behavior
+// is to account for timestamp truncation during archiving.
+func Changes(ctx context.Context, a, b string, changeFn ChangeFunc) error {
+	if a == "" {
+		logrus.Debugf("Using single walk diff for %s", b)
+		return addDirChanges(ctx, changeFn, b)
+	} else if diffOptions := detectDirDiff(b, a); diffOptions != nil {
+		logrus.Debugf("Using single walk diff for %s from %s", diffOptions.diffDir, a)
+		return diffDirChanges(ctx, changeFn, a, diffOptions)
+	}
+
+	logrus.Debugf("Using double walk diff for %s from %s", b, a)
+	return doubleWalkDiff(ctx, changeFn, a, b)
+}
+
+func addDirChanges(ctx context.Context, changeFn ChangeFunc, root string) error {
+	return filepath.Walk(root, func(path string, f os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		// Rebase path
+		path, err = filepath.Rel(root, path)
+		if err != nil {
+			return err
+		}
+
+		path = filepath.Join(string(os.PathSeparator), path)
+
+		// Skip root
+		if path == string(os.PathSeparator) {
+			return nil
+		}
+
+		return changeFn(ChangeKindAdd, path, f, nil)
+	})
+}
+
+// diffDirOptions is used when the diff can be directly calculated from
+// a diff directory to its base, without walking both trees.
+type diffDirOptions struct {
+	diffDir      string
+	skipChange   func(string) (bool, error)
+	deleteChange func(string, string, os.FileInfo) (string, error)
+}
+
+// diffDirChanges walks the diff directory and compares changes against the base.
+func diffDirChanges(ctx context.Context, changeFn ChangeFunc, base string, o *diffDirOptions) error {
+	changedDirs := make(map[string]struct{})
+	return filepath.Walk(o.diffDir, func(path string, f os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		// Rebase path
+		path, err = filepath.Rel(o.diffDir, path)
+		if err != nil {
+			return err
+		}
+
+		path = filepath.Join(string(os.PathSeparator), path)
+
+		// Skip root
+		if path == string(os.PathSeparator) {
+			return nil
+		}
+
+		// TODO: handle opaqueness, start new double walker at this
+		// location to get deletes, and skip tree in single walker
+
+		if o.skipChange != nil {
+			if skip, err := o.skipChange(path); skip {
+				return err
+			}
+		}
+
+		var kind ChangeKind
+
+		deletedFile, err := o.deleteChange(o.diffDir, path, f)
+		if err != nil {
+			return err
+		}
+
+		// Find out what kind of modification happened
+		if deletedFile != "" {
+			path = deletedFile
+			kind = ChangeKindDelete
+			f = nil
+		} else {
+			// Otherwise, the file was added
+			kind = ChangeKindAdd
+
+			// ...Unless it already existed in a base, in which case, it's a modification
+			stat, err := os.Stat(filepath.Join(base, path))
+			if err != nil && !os.IsNotExist(err) {
+				return err
+			}
+			if err == nil {
+				// The file existed in the base, so that's a modification
+
+				// However, if it's a directory, maybe it wasn't actually modified.
+				// If you modify /foo/bar/baz, then /foo will be part of the changed files only because it's the parent of bar
+				if stat.IsDir() && f.IsDir() {
+					if f.Size() == stat.Size() && f.Mode() == stat.Mode() && sameFsTime(f.ModTime(), stat.ModTime()) {
+						// Both directories are the same, don't record the change
+						return nil
+					}
+				}
+				kind = ChangeKindModify
+			}
+		}
+
+		// If /foo/bar/file.txt is modified, then /foo/bar must be part of the changed files.
+		// This block is here to ensure the change is recorded even if the
+		// modify time, mode and size of the parent directory in the rw and ro layers are all equal.
+		// Check https://github.com/docker/docker/pull/13590 for details.
+		if f.IsDir() {
+			changedDirs[path] = struct{}{}
+		}
+		if kind == ChangeKindAdd || kind == ChangeKindDelete {
+			parent := filepath.Dir(path)
+			if _, ok := changedDirs[parent]; !ok && parent != "/" {
+				pi, err := os.Stat(filepath.Join(o.diffDir, parent))
+				if err := changeFn(ChangeKindModify, parent, pi, err); err != nil {
+					return err
+				}
+				changedDirs[parent] = struct{}{}
+			}
+		}
+
+		return changeFn(kind, path, f, nil)
+	})
+}
+
+// doubleWalkDiff walks both directories to create a diff
+func doubleWalkDiff(ctx context.Context, changeFn ChangeFunc, a, b string) (err error) {
+	g, ctx := errgroup.WithContext(ctx)
+
+	var (
+		c1 = make(chan *currentPath)
+		c2 = make(chan *currentPath)
+
+		f1, f2 *currentPath
+		rmdir  string
+	)
+	g.Go(func() error {
+		defer close(c1)
+		return pathWalk(ctx, a, c1)
+	})
+	g.Go(func() error {
+		defer close(c2)
+		return pathWalk(ctx, b, c2)
+	})
+	g.Go(func() error {
+		for c1 != nil || c2 != nil {
+			if f1 == nil && c1 != nil {
+				f1, err = nextPath(ctx, c1)
+				if err != nil {
+					return err
+				}
+				if f1 == nil {
+					c1 = nil
+				}
+			}
+
+			if f2 == nil && c2 != nil {
+				f2, err = nextPath(ctx, c2)
+				if err != nil {
+					return err
+				}
+				if f2 == nil {
+					c2 = nil
+				}
+			}
+			if f1 == nil && f2 == nil {
+				continue
+			}
+
+			var f os.FileInfo
+			k, p := pathChange(f1, f2)
+			switch k {
+			case ChangeKindAdd:
+				if rmdir != "" {
+					rmdir = ""
+				}
+				f = f2.f
+				f2 = nil
+			case ChangeKindDelete:
+				// Check if this file is already removed by being
+				// under of a removed directory
+				if rmdir != "" && strings.HasPrefix(f1.path, rmdir) {
+					f1 = nil
+					continue
+				} else if f1.f.IsDir() {
+					rmdir = f1.path + string(os.PathSeparator)
+				} else if rmdir != "" {
+					rmdir = ""
+				}
+				f1 = nil
+			case ChangeKindModify:
+				same, err := sameFile(f1, f2)
+				if err != nil {
+					return err
+				}
+				if f1.f.IsDir() && !f2.f.IsDir() {
+					rmdir = f1.path + string(os.PathSeparator)
+				} else if rmdir != "" {
+					rmdir = ""
+				}
+				f = f2.f
+				f1 = nil
+				f2 = nil
+				if same {
+					if !isLinked(f) {
+						continue
+					}
+					k = ChangeKindUnmodified
+				}
+			}
+			if err := changeFn(k, p, f, nil); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+
+	return g.Wait()
+}

vendor/github.com/containerd/continuity/fs/diff_unix.go

@@ -0,0 +1,74 @@
+// +build !windows
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"bytes"
+	"os"
+	"syscall"
+
+	"github.com/containerd/continuity/sysx"
+	"github.com/pkg/errors"
+)
+
+// detectDirDiff returns diff dir options if a directory could
+// be found in the mount info for upper which is the direct
+// diff with the provided lower directory
+func detectDirDiff(upper, lower string) *diffDirOptions {
+	// TODO: get mount options for upper
+	// TODO: detect AUFS
+	// TODO: detect overlay
+	return nil
+}
+
+// compareSysStat returns whether the stats are equivalent,
+// whether the files are considered the same file, and
+// an error
+func compareSysStat(s1, s2 interface{}) (bool, error) {
+	ls1, ok := s1.(*syscall.Stat_t)
+	if !ok {
+		return false, nil
+	}
+	ls2, ok := s2.(*syscall.Stat_t)
+	if !ok {
+		return false, nil
+	}
+
+	return ls1.Mode == ls2.Mode && ls1.Uid == ls2.Uid && ls1.Gid == ls2.Gid && ls1.Rdev == ls2.Rdev, nil
+}
+
+func compareCapabilities(p1, p2 string) (bool, error) {
+	c1, err := sysx.LGetxattr(p1, "security.capability")
+	if err != nil && err != sysx.ENODATA {
+		return false, errors.Wrapf(err, "failed to get xattr for %s", p1)
+	}
+	c2, err := sysx.LGetxattr(p2, "security.capability")
+	if err != nil && err != sysx.ENODATA {
+		return false, errors.Wrapf(err, "failed to get xattr for %s", p2)
+	}
+	return bytes.Equal(c1, c2), nil
+}
+
+func isLinked(f os.FileInfo) bool {
+	s, ok := f.Sys().(*syscall.Stat_t)
+	if !ok {
+		return false
+	}
+	return !f.IsDir() && s.Nlink > 1
+}

vendor/github.com/containerd/continuity/fs/diff_windows.go

@@ -0,0 +1,48 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"os"
+
+	"golang.org/x/sys/windows"
+)
+
+func detectDirDiff(upper, lower string) *diffDirOptions {
+	return nil
+}
+
+func compareSysStat(s1, s2 interface{}) (bool, error) {
+	f1, ok := s1.(windows.Win32FileAttributeData)
+	if !ok {
+		return false, nil
+	}
+	f2, ok := s2.(windows.Win32FileAttributeData)
+	if !ok {
+		return false, nil
+	}
+	return f1.FileAttributes == f2.FileAttributes, nil
+}
+
+func compareCapabilities(p1, p2 string) (bool, error) {
+	// TODO: Use windows equivalent
+	return true, nil
+}
+
+func isLinked(os.FileInfo) bool {
+	return false
+}

vendor/github.com/containerd/continuity/fs/dtype_linux.go

@@ -0,0 +1,103 @@
+// +build linux
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+func locateDummyIfEmpty(path string) (string, error) {
+	children, err := ioutil.ReadDir(path)
+	if err != nil {
+		return "", err
+	}
+	if len(children) != 0 {
+		return "", nil
+	}
+	dummyFile, err := ioutil.TempFile(path, "fsutils-dummy")
+	if err != nil {
+		return "", err
+	}
+	name := dummyFile.Name()
+	err = dummyFile.Close()
+	return name, err
+}
+
+// SupportsDType returns whether the filesystem mounted on path supports d_type
+func SupportsDType(path string) (bool, error) {
+	// locate dummy so that we have at least one dirent
+	dummy, err := locateDummyIfEmpty(path)
+	if err != nil {
+		return false, err
+	}
+	if dummy != "" {
+		defer os.Remove(dummy)
+	}
+
+	visited := 0
+	supportsDType := true
+	fn := func(ent *syscall.Dirent) bool {
+		visited++
+		if ent.Type == syscall.DT_UNKNOWN {
+			supportsDType = false
+			// stop iteration
+			return true
+		}
+		// continue iteration
+		return false
+	}
+	if err = iterateReadDir(path, fn); err != nil {
+		return false, err
+	}
+	if visited == 0 {
+		return false, fmt.Errorf("did not hit any dirent during iteration %s", path)
+	}
+	return supportsDType, nil
+}
+
+func iterateReadDir(path string, fn func(*syscall.Dirent) bool) error {
+	d, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer d.Close()
+	fd := int(d.Fd())
+	buf := make([]byte, 4096)
+	for {
+		nbytes, err := syscall.ReadDirent(fd, buf)
+		if err != nil {
+			return err
+		}
+		if nbytes == 0 {
+			break
+		}
+		for off := 0; off < nbytes; {
+			ent := (*syscall.Dirent)(unsafe.Pointer(&buf[off]))
+			if stop := fn(ent); stop {
+				return nil
+			}
+			off += int(ent.Reclen)
+		}
+	}
+	return nil
+}

vendor/github.com/containerd/continuity/fs/du.go

@@ -0,0 +1,38 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import "context"
+
+// Usage of disk information
+type Usage struct {
+	Inodes int64
+	Size   int64
+}
+
+// DiskUsage counts the number of inodes and disk usage for the resources under
+// path.
+func DiskUsage(ctx context.Context, roots ...string) (Usage, error) {
+	return diskUsage(ctx, roots...)
+}
+
+// DiffUsage counts the numbers of inodes and disk usage in the
+// diff between the 2 directories. The first path is intended
+// as the base directory and the second as the changed directory.
+func DiffUsage(ctx context.Context, a, b string) (Usage, error) {
+	return diffUsage(ctx, a, b)
+}

vendor/github.com/containerd/continuity/fs/du_unix.go

@@ -0,0 +1,110 @@
+// +build !windows
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"syscall"
+)
+
+type inode struct {
+	// TODO(stevvooe): Can probably reduce memory usage by not tracking
+	// device, but we can leave this right for now.
+	dev, ino uint64
+}
+
+func newInode(stat *syscall.Stat_t) inode {
+	return inode{
+		// Dev is uint32 on darwin/bsd, uint64 on linux/solaris
+		dev: uint64(stat.Dev), // nolint: unconvert
+		// Ino is uint32 on bsd, uint64 on darwin/linux/solaris
+		ino: uint64(stat.Ino), // nolint: unconvert
+	}
+}
+
+func diskUsage(ctx context.Context, roots ...string) (Usage, error) {
+
+	var (
+		size   int64
+		inodes = map[inode]struct{}{} // expensive!
+	)
+
+	for _, root := range roots {
+		if err := filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+
+			select {
+			case <-ctx.Done():
+				return ctx.Err()
+			default:
+			}
+
+			inoKey := newInode(fi.Sys().(*syscall.Stat_t))
+			if _, ok := inodes[inoKey]; !ok {
+				inodes[inoKey] = struct{}{}
+				size += fi.Size()
+			}
+
+			return nil
+		}); err != nil {
+			return Usage{}, err
+		}
+	}
+
+	return Usage{
+		Inodes: int64(len(inodes)),
+		Size:   size,
+	}, nil
+}
+
+func diffUsage(ctx context.Context, a, b string) (Usage, error) {
+	var (
+		size   int64
+		inodes = map[inode]struct{}{} // expensive!
+	)
+
+	if err := Changes(ctx, a, b, func(kind ChangeKind, _ string, fi os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if kind == ChangeKindAdd || kind == ChangeKindModify {
+			inoKey := newInode(fi.Sys().(*syscall.Stat_t))
+			if _, ok := inodes[inoKey]; !ok {
+				inodes[inoKey] = struct{}{}
+				size += fi.Size()
+			}
+
+			return nil
+
+		}
+		return nil
+	}); err != nil {
+		return Usage{}, err
+	}
+
+	return Usage{
+		Inodes: int64(len(inodes)),
+		Size:   size,
+	}, nil
+}

vendor/github.com/containerd/continuity/fs/du_windows.go

@@ -0,0 +1,82 @@
+// +build windows
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+)
+
+func diskUsage(ctx context.Context, roots ...string) (Usage, error) {
+	var (
+		size int64
+	)
+
+	// TODO(stevvooe): Support inodes (or equivalent) for windows.
+
+	for _, root := range roots {
+		if err := filepath.Walk(root, func(path string, fi os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+
+			select {
+			case <-ctx.Done():
+				return ctx.Err()
+			default:
+			}
+
+			size += fi.Size()
+			return nil
+		}); err != nil {
+			return Usage{}, err
+		}
+	}
+
+	return Usage{
+		Size: size,
+	}, nil
+}
+
+func diffUsage(ctx context.Context, a, b string) (Usage, error) {
+	var (
+		size int64
+	)
+
+	if err := Changes(ctx, a, b, func(kind ChangeKind, _ string, fi os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if kind == ChangeKindAdd || kind == ChangeKindModify {
+			size += fi.Size()
+
+			return nil
+
+		}
+		return nil
+	}); err != nil {
+		return Usage{}, err
+	}
+
+	return Usage{
+		Size: size,
+	}, nil
+}

vendor/github.com/containerd/continuity/fs/hardlink.go

@@ -0,0 +1,43 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import "os"
+
+// GetLinkInfo returns an identifier representing the node a hardlink is pointing
+// to. If the file is not hard linked then 0 will be returned.
+func GetLinkInfo(fi os.FileInfo) (uint64, bool) {
+	return getLinkInfo(fi)
+}
+
+// getLinkSource returns a path for the given name and
+// file info to its link source in the provided inode
+// map. If the given file name is not in the map and
+// has other links, it is added to the inode map
+// to be a source for other link locations.
+func getLinkSource(name string, fi os.FileInfo, inodes map[uint64]string) (string, error) {
+	inode, isHardlink := getLinkInfo(fi)
+	if !isHardlink {
+		return "", nil
+	}
+
+	path, ok := inodes[inode]
+	if !ok {
+		inodes[inode] = name
+	}
+	return path, nil
+}

vendor/github.com/containerd/continuity/fs/hardlink_unix.go

@@ -0,0 +1,34 @@
+// +build !windows
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"os"
+	"syscall"
+)
+
+func getLinkInfo(fi os.FileInfo) (uint64, bool) {
+	s, ok := fi.Sys().(*syscall.Stat_t)
+	if !ok {
+		return 0, false
+	}
+
+	// Ino is uint32 on bsd, uint64 on darwin/linux/solaris
+	return uint64(s.Ino), !fi.IsDir() && s.Nlink > 1 // nolint: unconvert
+}

vendor/github.com/containerd/continuity/fs/hardlink_windows.go

@@ -0,0 +1,23 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import "os"
+
+func getLinkInfo(fi os.FileInfo) (uint64, bool) {
+	return 0, false
+}

vendor/github.com/containerd/continuity/fs/path.go

@@ -0,0 +1,313 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"os"
+	"path/filepath"
+
+	"github.com/pkg/errors"
+)
+
+var (
+	errTooManyLinks = errors.New("too many links")
+)
+
+type currentPath struct {
+	path     string
+	f        os.FileInfo
+	fullPath string
+}
+
+func pathChange(lower, upper *currentPath) (ChangeKind, string) {
+	if lower == nil {
+		if upper == nil {
+			panic("cannot compare nil paths")
+		}
+		return ChangeKindAdd, upper.path
+	}
+	if upper == nil {
+		return ChangeKindDelete, lower.path
+	}
+
+	switch i := directoryCompare(lower.path, upper.path); {
+	case i < 0:
+		// File in lower that is not in upper
+		return ChangeKindDelete, lower.path
+	case i > 0:
+		// File in upper that is not in lower
+		return ChangeKindAdd, upper.path
+	default:
+		return ChangeKindModify, upper.path
+	}
+}
+
+func directoryCompare(a, b string) int {
+	l := len(a)
+	if len(b) < l {
+		l = len(b)
+	}
+	for i := 0; i < l; i++ {
+		c1, c2 := a[i], b[i]
+		if c1 == filepath.Separator {
+			c1 = byte(0)
+		}
+		if c2 == filepath.Separator {
+			c2 = byte(0)
+		}
+		if c1 < c2 {
+			return -1
+		}
+		if c1 > c2 {
+			return +1
+		}
+	}
+	if len(a) < len(b) {
+		return -1
+	}
+	if len(a) > len(b) {
+		return +1
+	}
+	return 0
+}
+
+func sameFile(f1, f2 *currentPath) (bool, error) {
+	if os.SameFile(f1.f, f2.f) {
+		return true, nil
+	}
+
+	equalStat, err := compareSysStat(f1.f.Sys(), f2.f.Sys())
+	if err != nil || !equalStat {
+		return equalStat, err
+	}
+
+	if eq, err := compareCapabilities(f1.fullPath, f2.fullPath); err != nil || !eq {
+		return eq, err
+	}
+
+	// If not a directory also check size, modtime, and content
+	if !f1.f.IsDir() {
+		if f1.f.Size() != f2.f.Size() {
+			return false, nil
+		}
+		t1 := f1.f.ModTime()
+		t2 := f2.f.ModTime()
+
+		if t1.Unix() != t2.Unix() {
+			return false, nil
+		}
+
+		// If the timestamp may have been truncated in both of the
+		// files, check content of file to determine difference
+		if t1.Nanosecond() == 0 && t2.Nanosecond() == 0 {
+			var eq bool
+			if (f1.f.Mode() & os.ModeSymlink) == os.ModeSymlink {
+				eq, err = compareSymlinkTarget(f1.fullPath, f2.fullPath)
+			} else if f1.f.Size() > 0 {
+				eq, err = compareFileContent(f1.fullPath, f2.fullPath)
+			}
+			if err != nil || !eq {
+				return eq, err
+			}
+		} else if t1.Nanosecond() != t2.Nanosecond() {
+			return false, nil
+		}
+	}
+
+	return true, nil
+}
+
+func compareSymlinkTarget(p1, p2 string) (bool, error) {
+	t1, err := os.Readlink(p1)
+	if err != nil {
+		return false, err
+	}
+	t2, err := os.Readlink(p2)
+	if err != nil {
+		return false, err
+	}
+	return t1 == t2, nil
+}
+
+const compareChuckSize = 32 * 1024
+
+// compareFileContent compares the content of 2 same sized files
+// by comparing each byte.
+func compareFileContent(p1, p2 string) (bool, error) {
+	f1, err := os.Open(p1)
+	if err != nil {
+		return false, err
+	}
+	defer f1.Close()
+	f2, err := os.Open(p2)
+	if err != nil {
+		return false, err
+	}
+	defer f2.Close()
+
+	b1 := make([]byte, compareChuckSize)
+	b2 := make([]byte, compareChuckSize)
+	for {
+		n1, err1 := f1.Read(b1)
+		if err1 != nil && err1 != io.EOF {
+			return false, err1
+		}
+		n2, err2 := f2.Read(b2)
+		if err2 != nil && err2 != io.EOF {
+			return false, err2
+		}
+		if n1 != n2 || !bytes.Equal(b1[:n1], b2[:n2]) {
+			return false, nil
+		}
+		if err1 == io.EOF && err2 == io.EOF {
+			return true, nil
+		}
+	}
+}
+
+func pathWalk(ctx context.Context, root string, pathC chan<- *currentPath) error {
+	return filepath.Walk(root, func(path string, f os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		// Rebase path
+		path, err = filepath.Rel(root, path)
+		if err != nil {
+			return err
+		}
+
+		path = filepath.Join(string(os.PathSeparator), path)
+
+		// Skip root
+		if path == string(os.PathSeparator) {
+			return nil
+		}
+
+		p := &currentPath{
+			path:     path,
+			f:        f,
+			fullPath: filepath.Join(root, path),
+		}
+
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		case pathC <- p:
+			return nil
+		}
+	})
+}
+
+func nextPath(ctx context.Context, pathC <-chan *currentPath) (*currentPath, error) {
+	select {
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	case p := <-pathC:
+		return p, nil
+	}
+}
+
+// RootPath joins a path with a root, evaluating and bounding any
+// symlink to the root directory.
+func RootPath(root, path string) (string, error) {
+	if path == "" {
+		return root, nil
+	}
+	var linksWalked int // to protect against cycles
+	for {
+		i := linksWalked
+		newpath, err := walkLinks(root, path, &linksWalked)
+		if err != nil {
+			return "", err
+		}
+		path = newpath
+		if i == linksWalked {
+			newpath = filepath.Join("/", newpath)
+			if path == newpath {
+				return filepath.Join(root, newpath), nil
+			}
+			path = newpath
+		}
+	}
+}
+
+func walkLink(root, path string, linksWalked *int) (newpath string, islink bool, err error) {
+	if *linksWalked > 255 {
+		return "", false, errTooManyLinks
+	}
+
+	path = filepath.Join("/", path)
+	if path == "/" {
+		return path, false, nil
+	}
+	realPath := filepath.Join(root, path)
+
+	fi, err := os.Lstat(realPath)
+	if err != nil {
+		// If path does not yet exist, treat as non-symlink
+		if os.IsNotExist(err) {
+			return path, false, nil
+		}
+		return "", false, err
+	}
+	if fi.Mode()&os.ModeSymlink == 0 {
+		return path, false, nil
+	}
+	newpath, err = os.Readlink(realPath)
+	if err != nil {
+		return "", false, err
+	}
+	*linksWalked++
+	return newpath, true, nil
+}
+
+func walkLinks(root, path string, linksWalked *int) (string, error) {
+	switch dir, file := filepath.Split(path); {
+	case dir == "":
+		newpath, _, err := walkLink(root, file, linksWalked)
+		return newpath, err
+	case file == "":
+		if os.IsPathSeparator(dir[len(dir)-1]) {
+			if dir == "/" {
+				return dir, nil
+			}
+			return walkLinks(root, dir[:len(dir)-1], linksWalked)
+		}
+		newpath, _, err := walkLink(root, dir, linksWalked)
+		return newpath, err
+	default:
+		newdir, err := walkLinks(root, dir, linksWalked)
+		if err != nil {
+			return "", err
+		}
+		newpath, islink, err := walkLink(root, filepath.Join(newdir, file), linksWalked)
+		if err != nil {
+			return "", err
+		}
+		if !islink {
+			return newpath, nil
+		}
+		if filepath.IsAbs(newpath) {
+			return newpath, nil
+		}
+		return filepath.Join(newdir, newpath), nil
+	}
+}

vendor/github.com/containerd/continuity/fs/stat_bsd.go

@@ -0,0 +1,44 @@
+// +build darwin freebsd
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"syscall"
+	"time"
+)
+
+// StatAtime returns the access time from a stat struct
+func StatAtime(st *syscall.Stat_t) syscall.Timespec {
+	return st.Atimespec
+}
+
+// StatCtime returns the created time from a stat struct
+func StatCtime(st *syscall.Stat_t) syscall.Timespec {
+	return st.Ctimespec
+}
+
+// StatMtime returns the modified time from a stat struct
+func StatMtime(st *syscall.Stat_t) syscall.Timespec {
+	return st.Mtimespec
+}
+
+// StatATimeAsTime returns the access time as a time.Time
+func StatATimeAsTime(st *syscall.Stat_t) time.Time {
+	return time.Unix(int64(st.Atimespec.Sec), int64(st.Atimespec.Nsec)) // nolint: unconvert
+}

vendor/github.com/containerd/continuity/fs/stat_linux.go

@@ -0,0 +1,43 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import (
+	"syscall"
+	"time"
+)
+
+// StatAtime returns the Atim
+func StatAtime(st *syscall.Stat_t) syscall.Timespec {
+	return st.Atim
+}
+
+// StatCtime returns the Ctim
+func StatCtime(st *syscall.Stat_t) syscall.Timespec {
+	return st.Ctim
+}
+
+// StatMtime returns the Mtim
+func StatMtime(st *syscall.Stat_t) syscall.Timespec {
+	return st.Mtim
+}
+
+// StatATimeAsTime returns st.Atim as a time.Time
+func StatATimeAsTime(st *syscall.Stat_t) time.Time {
+	// The int64 conversions ensure the line compiles for 32-bit systems as well.
+	return time.Unix(int64(st.Atim.Sec), int64(st.Atim.Nsec)) // nolint: unconvert
+}

vendor/github.com/containerd/continuity/fs/time.go

@@ -0,0 +1,29 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package fs
+
+import "time"
+
+// Gnu tar and the go tar writer don't have sub-second mtime
+// precision, which is problematic when we apply changes via tar
+// files, we handle this by comparing for exact times, *or* same
+// second count and either a or b having exactly 0 nanoseconds
+func sameFsTime(a, b time.Time) bool {
+	return a == b ||
+		(a.Unix() == b.Unix() &&
+			(a.Nanosecond() == 0 || b.Nanosecond() == 0))
+}

vendor/github.com/containerd/continuity/syscallx/syscall_unix.go

@@ -0,0 +1,26 @@
+// +build !windows
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package syscallx
+
+import "syscall"
+
+// Readlink returns the destination of the named symbolic link.
+func Readlink(path string, buf []byte) (n int, err error) {
+	return syscall.Readlink(path, buf)
+}

vendor/github.com/containerd/continuity/syscallx/syscall_windows.go

@@ -0,0 +1,112 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package syscallx
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+type reparseDataBuffer struct {
+	ReparseTag        uint32
+	ReparseDataLength uint16
+	Reserved          uint16
+
+	// GenericReparseBuffer
+	reparseBuffer byte
+}
+
+type mountPointReparseBuffer struct {
+	SubstituteNameOffset uint16
+	SubstituteNameLength uint16
+	PrintNameOffset      uint16
+	PrintNameLength      uint16
+	PathBuffer           [1]uint16
+}
+
+type symbolicLinkReparseBuffer struct {
+	SubstituteNameOffset uint16
+	SubstituteNameLength uint16
+	PrintNameOffset      uint16
+	PrintNameLength      uint16
+	Flags                uint32
+	PathBuffer           [1]uint16
+}
+
+const (
+	_IO_REPARSE_TAG_MOUNT_POINT = 0xA0000003
+	_SYMLINK_FLAG_RELATIVE      = 1
+)
+
+// Readlink returns the destination of the named symbolic link.
+func Readlink(path string, buf []byte) (n int, err error) {
+	fd, err := syscall.CreateFile(syscall.StringToUTF16Ptr(path), syscall.GENERIC_READ, 0, nil, syscall.OPEN_EXISTING,
+		syscall.FILE_FLAG_OPEN_REPARSE_POINT|syscall.FILE_FLAG_BACKUP_SEMANTICS, 0)
+	if err != nil {
+		return -1, err
+	}
+	defer syscall.CloseHandle(fd)
+
+	rdbbuf := make([]byte, syscall.MAXIMUM_REPARSE_DATA_BUFFER_SIZE)
+	var bytesReturned uint32
+	err = syscall.DeviceIoControl(fd, syscall.FSCTL_GET_REPARSE_POINT, nil, 0, &rdbbuf[0], uint32(len(rdbbuf)), &bytesReturned, nil)
+	if err != nil {
+		return -1, err
+	}
+
+	rdb := (*reparseDataBuffer)(unsafe.Pointer(&rdbbuf[0]))
+	var s string
+	switch rdb.ReparseTag {
+	case syscall.IO_REPARSE_TAG_SYMLINK:
+		data := (*symbolicLinkReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
+		p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
+		s = syscall.UTF16ToString(p[data.SubstituteNameOffset/2 : (data.SubstituteNameOffset+data.SubstituteNameLength)/2])
+		if data.Flags&_SYMLINK_FLAG_RELATIVE == 0 {
+			if len(s) >= 4 && s[:4] == `\??\` {
+				s = s[4:]
+				switch {
+				case len(s) >= 2 && s[1] == ':': // \??\C:\foo\bar
+					// do nothing
+				case len(s) >= 4 && s[:4] == `UNC\`: // \??\UNC\foo\bar
+					s = `\\` + s[4:]
+				default:
+					// unexpected; do nothing
+				}
+			} else {
+				// unexpected; do nothing
+			}
+		}
+	case _IO_REPARSE_TAG_MOUNT_POINT:
+		data := (*mountPointReparseBuffer)(unsafe.Pointer(&rdb.reparseBuffer))
+		p := (*[0xffff]uint16)(unsafe.Pointer(&data.PathBuffer[0]))
+		s = syscall.UTF16ToString(p[data.SubstituteNameOffset/2 : (data.SubstituteNameOffset+data.SubstituteNameLength)/2])
+		if len(s) >= 4 && s[:4] == `\??\` { // \??\C:\foo\bar
+			if len(s) < 48 || s[:11] != `\??\Volume{` {
+				s = s[4:]
+			}
+		} else {
+			// unexpected; do nothing
+		}
+	default:
+		// the path is not a symlink or junction but another type of reparse
+		// point
+		return -1, syscall.ENOENT
+	}
+	n = copy(buf, []byte(s))
+
+	return n, nil
+}

vendor/github.com/containerd/continuity/sysx/README.md

@@ -0,0 +1,3 @@
+This package is for internal use only. It is intended to only have
+temporary changes before they are upstreamed to golang.org/x/sys/
+(a.k.a. https://github.com/golang/sys).

vendor/github.com/containerd/continuity/sysx/file_posix.go

@@ -0,0 +1,128 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package sysx
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/containerd/continuity/syscallx"
+)
+
+// Readlink returns the destination of the named symbolic link.
+// If there is an error, it will be of type *PathError.
+func Readlink(name string) (string, error) {
+	for len := 128; ; len *= 2 {
+		b := make([]byte, len)
+		n, e := fixCount(syscallx.Readlink(fixLongPath(name), b))
+		if e != nil {
+			return "", &os.PathError{Op: "readlink", Path: name, Err: e}
+		}
+		if n < len {
+			return string(b[0:n]), nil
+		}
+	}
+}
+
+// Many functions in package syscall return a count of -1 instead of 0.
+// Using fixCount(call()) instead of call() corrects the count.
+func fixCount(n int, err error) (int, error) {
+	if n < 0 {
+		n = 0
+	}
+	return n, err
+}
+
+// fixLongPath returns the extended-length (\\?\-prefixed) form of
+// path when needed, in order to avoid the default 260 character file
+// path limit imposed by Windows. If path is not easily converted to
+// the extended-length form (for example, if path is a relative path
+// or contains .. elements), or is short enough, fixLongPath returns
+// path unmodified.
+//
+// See https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#maxpath
+func fixLongPath(path string) string {
+	// Do nothing (and don't allocate) if the path is "short".
+	// Empirically (at least on the Windows Server 2013 builder),
+	// the kernel is arbitrarily okay with < 248 bytes. That
+	// matches what the docs above say:
+	// "When using an API to create a directory, the specified
+	// path cannot be so long that you cannot append an 8.3 file
+	// name (that is, the directory name cannot exceed MAX_PATH
+	// minus 12)." Since MAX_PATH is 260, 260 - 12 = 248.
+	//
+	// The MSDN docs appear to say that a normal path that is 248 bytes long
+	// will work; empirically the path must be less then 248 bytes long.
+	if len(path) < 248 {
+		// Don't fix. (This is how Go 1.7 and earlier worked,
+		// not automatically generating the \\?\ form)
+		return path
+	}
+
+	// The extended form begins with \\?\, as in
+	// \\?\c:\windows\foo.txt or \\?\UNC\server\share\foo.txt.
+	// The extended form disables evaluation of . and .. path
+	// elements and disables the interpretation of / as equivalent
+	// to \. The conversion here rewrites / to \ and elides
+	// . elements as well as trailing or duplicate separators. For
+	// simplicity it avoids the conversion entirely for relative
+	// paths or paths containing .. elements. For now,
+	// \\server\share paths are not converted to
+	// \\?\UNC\server\share paths because the rules for doing so
+	// are less well-specified.
+	if len(path) >= 2 && path[:2] == `\\` {
+		// Don't canonicalize UNC paths.
+		return path
+	}
+	if !filepath.IsAbs(path) {
+		// Relative path
+		return path
+	}
+
+	const prefix = `\\?`
+
+	pathbuf := make([]byte, len(prefix)+len(path)+len(`\`))
+	copy(pathbuf, prefix)
+	n := len(path)
+	r, w := 0, len(prefix)
+	for r < n {
+		switch {
+		case os.IsPathSeparator(path[r]):
+			// empty block
+			r++
+		case path[r] == '.' && (r+1 == n || os.IsPathSeparator(path[r+1])):
+			// /./
+			r++
+		case r+1 < n && path[r] == '.' && path[r+1] == '.' && (r+2 == n || os.IsPathSeparator(path[r+2])):
+			// /../ is currently unhandled
+			return path
+		default:
+			pathbuf[w] = '\\'
+			w++
+			for ; r < n && !os.IsPathSeparator(path[r]); r++ {
+				pathbuf[w] = path[r]
+				w++
+			}
+		}
+	}
+	// A drive's root directory needs a trailing \
+	if w == len(`\\?\c:`) {
+		pathbuf[w] = '\\'
+		w++
+	}
+	return string(pathbuf[:w])
+}

vendor/github.com/containerd/continuity/sysx/generate.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+#   Copyright The containerd Authors.
+
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+
+#       http://www.apache.org/licenses/LICENSE-2.0
+
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+
+set -e
+
+mksyscall="$(go env GOROOT)/src/syscall/mksyscall.pl"
+
+fix() {
+	sed 's,^package syscall$,package sysx,' \
+		| sed 's,^import "unsafe"$,import (\n\t"syscall"\n\t"unsafe"\n),' \
+		| gofmt -r='BytePtrFromString -> syscall.BytePtrFromString' \
+		| gofmt -r='Syscall6 -> syscall.Syscall6' \
+		| gofmt -r='Syscall -> syscall.Syscall' \
+		| gofmt -r='SYS_GETXATTR -> syscall.SYS_GETXATTR' \
+		| gofmt -r='SYS_LISTXATTR -> syscall.SYS_LISTXATTR' \
+		| gofmt -r='SYS_SETXATTR -> syscall.SYS_SETXATTR' \
+		| gofmt -r='SYS_REMOVEXATTR -> syscall.SYS_REMOVEXATTR' \
+		| gofmt -r='SYS_LGETXATTR -> syscall.SYS_LGETXATTR' \
+		| gofmt -r='SYS_LLISTXATTR -> syscall.SYS_LLISTXATTR' \
+		| gofmt -r='SYS_LSETXATTR -> syscall.SYS_LSETXATTR' \
+		| gofmt -r='SYS_LREMOVEXATTR -> syscall.SYS_LREMOVEXATTR'
+}
+
+if [ "$GOARCH" == "" ] || [ "$GOOS" == "" ]; then
+	echo "Must specify \$GOARCH and \$GOOS"
+	exit 1
+fi
+
+mkargs=""
+
+if [ "$GOARCH" == "386" ] || [ "$GOARCH" == "arm" ]; then
+	mkargs="-l32"
+fi
+
+for f in "$@"; do
+	$mksyscall $mkargs "${f}_${GOOS}.go" | fix > "${f}_${GOOS}_${GOARCH}.go"
+done
+

vendor/github.com/containerd/continuity/sysx/nodata_linux.go

@@ -0,0 +1,23 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package sysx
+
+import (
+	"syscall"
+)
+
+const ENODATA = syscall.ENODATA

vendor/github.com/containerd/continuity/sysx/nodata_solaris.go

@@ -0,0 +1,24 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package sysx
+
+import (
+	"syscall"
+)
+
+// This should actually be a set that contains ENOENT and EPERM
+const ENODATA = syscall.ENOENT

vendor/github.com/containerd/continuity/sysx/nodata_unix.go

@@ -0,0 +1,25 @@
+// +build darwin freebsd
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package sysx
+
+import (
+	"syscall"
+)
+
+const ENODATA = syscall.ENOATTR

vendor/github.com/containerd/continuity/sysx/xattr.go

@@ -0,0 +1,125 @@
+// +build linux darwin
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package sysx
+
+import (
+	"bytes"
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+// Listxattr calls syscall listxattr and reads all content
+// and returns a string array
+func Listxattr(path string) ([]string, error) {
+	return listxattrAll(path, unix.Listxattr)
+}
+
+// Removexattr calls syscall removexattr
+func Removexattr(path string, attr string) (err error) {
+	return unix.Removexattr(path, attr)
+}
+
+// Setxattr calls syscall setxattr
+func Setxattr(path string, attr string, data []byte, flags int) (err error) {
+	return unix.Setxattr(path, attr, data, flags)
+}
+
+// Getxattr calls syscall getxattr
+func Getxattr(path, attr string) ([]byte, error) {
+	return getxattrAll(path, attr, unix.Getxattr)
+}
+
+// LListxattr lists xattrs, not following symlinks
+func LListxattr(path string) ([]string, error) {
+	return listxattrAll(path, unix.Llistxattr)
+}
+
+// LRemovexattr removes an xattr, not following symlinks
+func LRemovexattr(path string, attr string) (err error) {
+	return unix.Lremovexattr(path, attr)
+}
+
+// LSetxattr sets an xattr, not following symlinks
+func LSetxattr(path string, attr string, data []byte, flags int) (err error) {
+	return unix.Lsetxattr(path, attr, data, flags)
+}
+
+// LGetxattr gets an xattr, not following symlinks
+func LGetxattr(path, attr string) ([]byte, error) {
+	return getxattrAll(path, attr, unix.Lgetxattr)
+}
+
+const defaultXattrBufferSize = 5
+
+type listxattrFunc func(path string, dest []byte) (int, error)
+
+func listxattrAll(path string, listFunc listxattrFunc) ([]string, error) {
+	var p []byte // nil on first execution
+
+	for {
+		n, err := listFunc(path, p) // first call gets buffer size.
+		if err != nil {
+			return nil, err
+		}
+
+		if n > len(p) {
+			p = make([]byte, n)
+			continue
+		}
+
+		p = p[:n]
+
+		ps := bytes.Split(bytes.TrimSuffix(p, []byte{0}), []byte{0})
+		var entries []string
+		for _, p := range ps {
+			s := string(p)
+			if s != "" {
+				entries = append(entries, s)
+			}
+		}
+
+		return entries, nil
+	}
+}
+
+type getxattrFunc func(string, string, []byte) (int, error)
+
+func getxattrAll(path, attr string, getFunc getxattrFunc) ([]byte, error) {
+	p := make([]byte, defaultXattrBufferSize)
+	for {
+		n, err := getFunc(path, attr, p)
+		if err != nil {
+			if errno, ok := err.(syscall.Errno); ok && errno == syscall.ERANGE {
+				p = make([]byte, len(p)*2) // this can't be ideal.
+				continue                   // try again!
+			}
+
+			return nil, err
+		}
+
+		// realloc to correct size and repeat
+		if n > len(p) {
+			p = make([]byte, n)
+			continue
+		}
+
+		return p[:n], nil
+	}
+}

vendor/github.com/containerd/continuity/sysx/xattr_unsupported.go

@@ -0,0 +1,67 @@
+// +build !linux,!darwin
+
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package sysx
+
+import (
+	"errors"
+	"runtime"
+)
+
+var unsupported = errors.New("extended attributes unsupported on " + runtime.GOOS)
+
+// Listxattr calls syscall listxattr and reads all content
+// and returns a string array
+func Listxattr(path string) ([]string, error) {
+	return []string{}, nil
+}
+
+// Removexattr calls syscall removexattr
+func Removexattr(path string, attr string) (err error) {
+	return unsupported
+}
+
+// Setxattr calls syscall setxattr
+func Setxattr(path string, attr string, data []byte, flags int) (err error) {
+	return unsupported
+}
+
+// Getxattr calls syscall getxattr
+func Getxattr(path, attr string) ([]byte, error) {
+	return []byte{}, unsupported
+}
+
+// LListxattr lists xattrs, not following symlinks
+func LListxattr(path string) ([]string, error) {
+	return []string{}, nil
+}
+
+// LRemovexattr removes an xattr, not following symlinks
+func LRemovexattr(path string, attr string) (err error) {
+	return unsupported
+}
+
+// LSetxattr sets an xattr, not following symlinks
+func LSetxattr(path string, attr string, data []byte, flags int) (err error) {
+	return unsupported
+}
+
+// LGetxattr gets an xattr, not following symlinks
+func LGetxattr(path, attr string) ([]byte, error) {
+	return []byte{}, nil
+}

vendor/github.com/docker/distribution/registry/api/errcode/errors.go

@@ -0,0 +1,267 @@
+package errcode
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// ErrorCoder is the base interface for ErrorCode and Error allowing
+// users of each to just call ErrorCode to get the real ID of each
+type ErrorCoder interface {
+	ErrorCode() ErrorCode
+}
+
+// ErrorCode represents the error type. The errors are serialized via strings
+// and the integer format may change and should *never* be exported.
+type ErrorCode int
+
+var _ error = ErrorCode(0)
+
+// ErrorCode just returns itself
+func (ec ErrorCode) ErrorCode() ErrorCode {
+	return ec
+}
+
+// Error returns the ID/Value
+func (ec ErrorCode) Error() string {
+	// NOTE(stevvooe): Cannot use message here since it may have unpopulated args.
+	return strings.ToLower(strings.Replace(ec.String(), "_", " ", -1))
+}
+
+// Descriptor returns the descriptor for the error code.
+func (ec ErrorCode) Descriptor() ErrorDescriptor {
+	d, ok := errorCodeToDescriptors[ec]
+
+	if !ok {
+		return ErrorCodeUnknown.Descriptor()
+	}
+
+	return d
+}
+
+// String returns the canonical identifier for this error code.
+func (ec ErrorCode) String() string {
+	return ec.Descriptor().Value
+}
+
+// Message returned the human-readable error message for this error code.
+func (ec ErrorCode) Message() string {
+	return ec.Descriptor().Message
+}
+
+// MarshalText encodes the receiver into UTF-8-encoded text and returns the
+// result.
+func (ec ErrorCode) MarshalText() (text []byte, err error) {
+	return []byte(ec.String()), nil
+}
+
+// UnmarshalText decodes the form generated by MarshalText.
+func (ec *ErrorCode) UnmarshalText(text []byte) error {
+	desc, ok := idToDescriptors[string(text)]
+
+	if !ok {
+		desc = ErrorCodeUnknown.Descriptor()
+	}
+
+	*ec = desc.Code
+
+	return nil
+}
+
+// WithMessage creates a new Error struct based on the passed-in info and
+// overrides the Message property.
+func (ec ErrorCode) WithMessage(message string) Error {
+	return Error{
+		Code:    ec,
+		Message: message,
+	}
+}
+
+// WithDetail creates a new Error struct based on the passed-in info and
+// set the Detail property appropriately
+func (ec ErrorCode) WithDetail(detail interface{}) Error {
+	return Error{
+		Code:    ec,
+		Message: ec.Message(),
+	}.WithDetail(detail)
+}
+
+// WithArgs creates a new Error struct and sets the Args slice
+func (ec ErrorCode) WithArgs(args ...interface{}) Error {
+	return Error{
+		Code:    ec,
+		Message: ec.Message(),
+	}.WithArgs(args...)
+}
+
+// Error provides a wrapper around ErrorCode with extra Details provided.
+type Error struct {
+	Code    ErrorCode   `json:"code"`
+	Message string      `json:"message"`
+	Detail  interface{} `json:"detail,omitempty"`
+
+	// TODO(duglin): See if we need an "args" property so we can do the
+	// variable substitution right before showing the message to the user
+}
+
+var _ error = Error{}
+
+// ErrorCode returns the ID/Value of this Error
+func (e Error) ErrorCode() ErrorCode {
+	return e.Code
+}
+
+// Error returns a human readable representation of the error.
+func (e Error) Error() string {
+	return fmt.Sprintf("%s: %s", e.Code.Error(), e.Message)
+}
+
+// WithDetail will return a new Error, based on the current one, but with
+// some Detail info added
+func (e Error) WithDetail(detail interface{}) Error {
+	return Error{
+		Code:    e.Code,
+		Message: e.Message,
+		Detail:  detail,
+	}
+}
+
+// WithArgs uses the passed-in list of interface{} as the substitution
+// variables in the Error's Message string, but returns a new Error
+func (e Error) WithArgs(args ...interface{}) Error {
+	return Error{
+		Code:    e.Code,
+		Message: fmt.Sprintf(e.Code.Message(), args...),
+		Detail:  e.Detail,
+	}
+}
+
+// ErrorDescriptor provides relevant information about a given error code.
+type ErrorDescriptor struct {
+	// Code is the error code that this descriptor describes.
+	Code ErrorCode
+
+	// Value provides a unique, string key, often captilized with
+	// underscores, to identify the error code. This value is used as the
+	// keyed value when serializing api errors.
+	Value string
+
+	// Message is a short, human readable decription of the error condition
+	// included in API responses.
+	Message string
+
+	// Description provides a complete account of the errors purpose, suitable
+	// for use in documentation.
+	Description string
+
+	// HTTPStatusCode provides the http status code that is associated with
+	// this error condition.
+	HTTPStatusCode int
+}
+
+// ParseErrorCode returns the value by the string error code.
+// `ErrorCodeUnknown` will be returned if the error is not known.
+func ParseErrorCode(value string) ErrorCode {
+	ed, ok := idToDescriptors[value]
+	if ok {
+		return ed.Code
+	}
+
+	return ErrorCodeUnknown
+}
+
+// Errors provides the envelope for multiple errors and a few sugar methods
+// for use within the application.
+type Errors []error
+
+var _ error = Errors{}
+
+func (errs Errors) Error() string {
+	switch len(errs) {
+	case 0:
+		return "<nil>"
+	case 1:
+		return errs[0].Error()
+	default:
+		msg := "errors:\n"
+		for _, err := range errs {
+			msg += err.Error() + "\n"
+		}
+		return msg
+	}
+}
+
+// Len returns the current number of errors.
+func (errs Errors) Len() int {
+	return len(errs)
+}
+
+// MarshalJSON converts slice of error, ErrorCode or Error into a
+// slice of Error - then serializes
+func (errs Errors) MarshalJSON() ([]byte, error) {
+	var tmpErrs struct {
+		Errors []Error `json:"errors,omitempty"`
+	}
+
+	for _, daErr := range errs {
+		var err Error
+
+		switch daErr.(type) {
+		case ErrorCode:
+			err = daErr.(ErrorCode).WithDetail(nil)
+		case Error:
+			err = daErr.(Error)
+		default:
+			err = ErrorCodeUnknown.WithDetail(daErr)
+
+		}
+
+		// If the Error struct was setup and they forgot to set the
+		// Message field (meaning its "") then grab it from the ErrCode
+		msg := err.Message
+		if msg == "" {
+			msg = err.Code.Message()
+		}
+
+		tmpErrs.Errors = append(tmpErrs.Errors, Error{
+			Code:    err.Code,
+			Message: msg,
+			Detail:  err.Detail,
+		})
+	}
+
+	return json.Marshal(tmpErrs)
+}
+
+// UnmarshalJSON deserializes []Error and then converts it into slice of
+// Error or ErrorCode
+func (errs *Errors) UnmarshalJSON(data []byte) error {
+	var tmpErrs struct {
+		Errors []Error
+	}
+
+	if err := json.Unmarshal(data, &tmpErrs); err != nil {
+		return err
+	}
+
+	var newErrs Errors
+	for _, daErr := range tmpErrs.Errors {
+		// If Message is empty or exactly matches the Code's message string
+		// then just use the Code, no need for a full Error struct
+		if daErr.Detail == nil && (daErr.Message == "" || daErr.Message == daErr.Code.Message()) {
+			// Error's w/o details get converted to ErrorCode
+			newErrs = append(newErrs, daErr.Code)
+		} else {
+			// Error's w/ details are untouched
+			newErrs = append(newErrs, Error{
+				Code:    daErr.Code,
+				Message: daErr.Message,
+				Detail:  daErr.Detail,
+			})
+		}
+	}
+
+	*errs = newErrs
+	return nil
+}

vendor/github.com/docker/distribution/registry/api/errcode/handler.go

@@ -0,0 +1,40 @@
+package errcode
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// ServeJSON attempts to serve the errcode in a JSON envelope. It marshals err
+// and sets the content-type header to 'application/json'. It will handle
+// ErrorCoder and Errors, and if necessary will create an envelope.
+func ServeJSON(w http.ResponseWriter, err error) error {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	var sc int
+
+	switch errs := err.(type) {
+	case Errors:
+		if len(errs) < 1 {
+			break
+		}
+
+		if err, ok := errs[0].(ErrorCoder); ok {
+			sc = err.ErrorCode().Descriptor().HTTPStatusCode
+		}
+	case ErrorCoder:
+		sc = errs.ErrorCode().Descriptor().HTTPStatusCode
+		err = Errors{err} // create an envelope.
+	default:
+		// We just have an unhandled error type, so just place in an envelope
+		// and move along.
+		err = Errors{err}
+	}
+
+	if sc == 0 {
+		sc = http.StatusInternalServerError
+	}
+
+	w.WriteHeader(sc)
+
+	return json.NewEncoder(w).Encode(err)
+}

vendor/github.com/docker/distribution/registry/api/errcode/register.go

@@ -0,0 +1,138 @@
+package errcode
+
+import (
+	"fmt"
+	"net/http"
+	"sort"
+	"sync"
+)
+
+var (
+	errorCodeToDescriptors = map[ErrorCode]ErrorDescriptor{}
+	idToDescriptors        = map[string]ErrorDescriptor{}
+	groupToDescriptors     = map[string][]ErrorDescriptor{}
+)
+
+var (
+	// ErrorCodeUnknown is a generic error that can be used as a last
+	// resort if there is no situation-specific error message that can be used
+	ErrorCodeUnknown = Register("errcode", ErrorDescriptor{
+		Value:   "UNKNOWN",
+		Message: "unknown error",
+		Description: `Generic error returned when the error does not have an
+			                                            API classification.`,
+		HTTPStatusCode: http.StatusInternalServerError,
+	})
+
+	// ErrorCodeUnsupported is returned when an operation is not supported.
+	ErrorCodeUnsupported = Register("errcode", ErrorDescriptor{
+		Value:   "UNSUPPORTED",
+		Message: "The operation is unsupported.",
+		Description: `The operation was unsupported due to a missing
+		implementation or invalid set of parameters.`,
+		HTTPStatusCode: http.StatusMethodNotAllowed,
+	})
+
+	// ErrorCodeUnauthorized is returned if a request requires
+	// authentication.
+	ErrorCodeUnauthorized = Register("errcode", ErrorDescriptor{
+		Value:   "UNAUTHORIZED",
+		Message: "authentication required",
+		Description: `The access controller was unable to authenticate
+		the client. Often this will be accompanied by a
+		Www-Authenticate HTTP response header indicating how to
+		authenticate.`,
+		HTTPStatusCode: http.StatusUnauthorized,
+	})
+
+	// ErrorCodeDenied is returned if a client does not have sufficient
+	// permission to perform an action.
+	ErrorCodeDenied = Register("errcode", ErrorDescriptor{
+		Value:   "DENIED",
+		Message: "requested access to the resource is denied",
+		Description: `The access controller denied access for the
+		operation on a resource.`,
+		HTTPStatusCode: http.StatusForbidden,
+	})
+
+	// ErrorCodeUnavailable provides a common error to report unavailability
+	// of a service or endpoint.
+	ErrorCodeUnavailable = Register("errcode", ErrorDescriptor{
+		Value:          "UNAVAILABLE",
+		Message:        "service unavailable",
+		Description:    "Returned when a service is not available",
+		HTTPStatusCode: http.StatusServiceUnavailable,
+	})
+
+	// ErrorCodeTooManyRequests is returned if a client attempts too many
+	// times to contact a service endpoint.
+	ErrorCodeTooManyRequests = Register("errcode", ErrorDescriptor{
+		Value:   "TOOMANYREQUESTS",
+		Message: "too many requests",
+		Description: `Returned when a client attempts to contact a
+		service too many times`,
+		HTTPStatusCode: http.StatusTooManyRequests,
+	})
+)
+
+var nextCode = 1000
+var registerLock sync.Mutex
+
+// Register will make the passed-in error known to the environment and
+// return a new ErrorCode
+func Register(group string, descriptor ErrorDescriptor) ErrorCode {
+	registerLock.Lock()
+	defer registerLock.Unlock()
+
+	descriptor.Code = ErrorCode(nextCode)
+
+	if _, ok := idToDescriptors[descriptor.Value]; ok {
+		panic(fmt.Sprintf("ErrorValue %q is already registered", descriptor.Value))
+	}
+	if _, ok := errorCodeToDescriptors[descriptor.Code]; ok {
+		panic(fmt.Sprintf("ErrorCode %v is already registered", descriptor.Code))
+	}
+
+	groupToDescriptors[group] = append(groupToDescriptors[group], descriptor)
+	errorCodeToDescriptors[descriptor.Code] = descriptor
+	idToDescriptors[descriptor.Value] = descriptor
+
+	nextCode++
+	return descriptor.Code
+}
+
+type byValue []ErrorDescriptor
+
+func (a byValue) Len() int           { return len(a) }
+func (a byValue) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a byValue) Less(i, j int) bool { return a[i].Value < a[j].Value }
+
+// GetGroupNames returns the list of Error group names that are registered
+func GetGroupNames() []string {
+	keys := []string{}
+
+	for k := range groupToDescriptors {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	return keys
+}
+
+// GetErrorCodeGroup returns the named group of error descriptors
+func GetErrorCodeGroup(name string) []ErrorDescriptor {
+	desc := groupToDescriptors[name]
+	sort.Sort(byValue(desc))
+	return desc
+}
+
+// GetErrorAllDescriptors returns a slice of all ErrorDescriptors that are
+// registered, irrespective of what group they're in
+func GetErrorAllDescriptors() []ErrorDescriptor {
+	result := []ErrorDescriptor{}
+
+	for _, group := range GetGroupNames() {
+		result = append(result, GetErrorCodeGroup(group)...)
+	}
+	sort.Sort(byValue(result))
+	return result
+}

vendor/github.com/docker/docker/AUTHORS

@@ -44,7 +44,7 @@ Ajey Charantimath <ajey.charantimath@gmail.com>
 ajneu <ajneu@users.noreply.github.com>
 Akash Gupta <akagup@microsoft.com>
 Akihiro Matsushima <amatsusbit@gmail.com>
-Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
+Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
 Akim Demaille <akim.demaille@docker.com>
 Akira Koyasu <mail@akirakoyasu.net>
 Akshay Karle <akshay.a.karle@gmail.com>
@@ -81,6 +81,7 @@ Alexandre Garnier <zigarn@gmail.com>
 Alexandre González <agonzalezro@gmail.com>
 Alexandre Jomin <alexandrejomin@gmail.com>
 Alexandru Sfirlogea <alexandru.sfirlogea@gmail.com>
+Alexei Margasov <alexei38@yandex.ru>
 Alexey Guskov <lexag@mail.ru>
 Alexey Kotlyarov <alexey@infoxchange.net.au>
 Alexey Shamrin <shamrin@gmail.com>
@@ -118,6 +119,7 @@ Andreas Köhler <andi5.py@gmx.net>
 Andreas Savvides <andreas@editd.com>
 Andreas Tiefenthaler <at@an-ti.eu>
 Andrei Gherzan <andrei@resin.io>
+Andrei Vagin <avagin@gmail.com>
 Andrew C. Bodine <acbodine@us.ibm.com>
 Andrew Clay Shafer <andrewcshafer@gmail.com>
 Andrew Duckworth <grillopress@gmail.com>
@@ -137,6 +139,7 @@ Andrew Po <absourd.noise@gmail.com>
 Andrew Weiss <andrew.weiss@docker.com>
 Andrew Williams <williams.andrew@gmail.com>
 Andrews Medina <andrewsmedina@gmail.com>
+Andrey Kolomentsev <andrey.kolomentsev@docker.com>
 Andrey Petrov <andrey.petrov@shazow.net>
 Andrey Stolbovsky <andrey.stolbovsky@gmail.com>
 André Martins <aanm90@gmail.com>
@@ -151,6 +154,7 @@ Andy Wilson <wilson.andrew.j+github@gmail.com>
 Anes Hasicic <anes.hasicic@gmail.com>
 Anil Belur <askb23@gmail.com>
 Anil Madhavapeddy <anil@recoil.org>
+Ankit Jain <ajatkj@yahoo.co.in>
 Ankush Agarwal <ankushagarwal11@gmail.com>
 Anonmily <michelle@michelleliu.io>
 Anran Qiao <anran.qiao@daocloud.io>
@@ -182,6 +186,7 @@ Asad Saeeduddin <masaeedu@gmail.com>
 Asbjørn Enge <asbjorn@hanafjedle.net>
 averagehuman <averagehuman@users.noreply.github.com>
 Avi Das <andas222@gmail.com>
+Avi Kivity <avi@scylladb.com>
 Avi Miller <avi.miller@oracle.com>
 Avi Vaid <avaid1996@gmail.com>
 ayoshitake <airandfingers@gmail.com>
@@ -195,23 +200,27 @@ bdevloed <boris.de.vloed@gmail.com>
 Ben Bonnefoy <frenchben@docker.com>
 Ben Firshman <ben@firshman.co.uk>
 Ben Golub <ben.golub@dotcloud.com>
+Ben Gould <ben@bengould.co.uk>
 Ben Hall <ben@benhall.me.uk>
 Ben Sargent <ben@brokendigits.com>
 Ben Severson <BenSeverson@users.noreply.github.com>
 Ben Toews <mastahyeti@gmail.com>
 Ben Wiklund <ben@daisyowl.com>
 Benjamin Atkin <ben@benatkin.com>
+Benjamin Baker <Benjamin.baker@utexas.edu>
 Benjamin Boudreau <boudreau.benjamin@gmail.com>
 Benjamin Yolken <yolken@stripe.com>
 Benoit Chesneau <bchesneau@gmail.com>
 Bernerd Schaefer <bj.schaefer@gmail.com>
 Bernhard M. Wiedemann <bwiedemann@suse.de>
 Bert Goethals <bert@bertg.be>
+Bevisy Zhang <binbin36520@gmail.com>
 Bharath Thiruveedula <bharath_ves@hotmail.com>
 Bhiraj Butala <abhiraj.butala@gmail.com>
 Bhumika Bayani <bhumikabayani@gmail.com>
 Bilal Amarni <bilal.amarni@gmail.com>
 Bill Wang <ozbillwang@gmail.com>
+Bily Zhang <xcoder@tenxcloud.com>
 Bin Liu <liubin0329@gmail.com>
 Bingshen Wang <bingshen.wbs@alibaba-inc.com>
 Blake Geno <blakegeno@gmail.com>
@@ -246,6 +255,7 @@ Brian Torres-Gil <brian@dralth.com>
 Brian Trump <btrump@yelp.com>
 Brice Jaglin <bjaglin@teads.tv>
 Briehan Lombaard <briehan.lombaard@gmail.com>
+Brielle Broder <bbroder@google.com>
 Bruno Bigras <bigras.bruno@gmail.com>
 Bruno Binet <bruno.binet@gmail.com>
 Bruno Gazzera <bgazzera@paginar.com>
@@ -300,6 +310,7 @@ Chen Min <chenmin46@huawei.com>
 Chen Mingjie <chenmingjie0828@163.com>
 Chen Qiu <cheney-90@hotmail.com>
 Cheng-mean Liu <soccerl@microsoft.com>
+Chengfei Shang <cfshang@alauda.io>
 Chengguang Xu <cgxu519@gmx.com>
 chenyuzhu <chenyuzhi@oschina.cn>
 Chetan Birajdar <birajdar.chetan@gmail.com>
@@ -325,9 +336,11 @@ Chris Swan <chris.swan@iee.org>
 Chris Telfer <ctelfer@docker.com>
 Chris Wahl <github@wahlnetwork.com>
 Chris Weyl <cweyl@alumni.drew.edu>
+Chris White <me@cwprogram.com>
 Christian Berendt <berendt@b1-systems.de>
 Christian Brauner <christian.brauner@ubuntu.com>
 Christian Böhme <developement@boehme3d.de>
+Christian Muehlhaeuser <muesli@gmail.com>
 Christian Persson <saser@live.se>
 Christian Rotzoll <ch.rotzoll@gmail.com>
 Christian Simon <simon@swine.de>
@@ -350,6 +363,7 @@ Cody Roseborough <crrosebo@amazon.com>
 Coenraad Loubser <coenraad@wish.org.za>
 Colin Dunklau <colin.dunklau@gmail.com>
 Colin Hebert <hebert.colin@gmail.com>
+Colin Panisset <github@clabber.com>
 Colin Rice <colin@daedrum.net>
 Colin Walters <walters@verbum.org>
 Collin Guarino <collin.guarino@gmail.com>
@@ -385,6 +399,7 @@ Dan Levy <dan@danlevy.net>
 Dan McPherson <dmcphers@redhat.com>
 Dan Stine <sw@stinemail.com>
 Dan Williams <me@deedubs.com>
+Dani Hodovic <dani.hodovic@gmail.com>
 Dani Louca <dani.louca@docker.com>
 Daniel Antlinger <d.antlinger@gmx.at>
 Daniel Dao <dqminh@cloudflare.com>
@@ -438,12 +453,14 @@ David Mackey <tdmackey@booleanhaiku.com>
 David Mat <david@davidmat.com>
 David Mcanulty <github@hellspark.com>
 David McKay <david@rawkode.com>
+David P Hilton <david.hilton.p@gmail.com>
 David Pelaez <pelaez89@gmail.com>
 David R. Jenni <david.r.jenni@gmail.com>
 David Röthlisberger <david@rothlis.net>
 David Sheets <dsheets@docker.com>
 David Sissitka <me@dsissitka.com>
 David Trott <github@davidtrott.com>
+David Wang <00107082@163.com>
 David Williamson <david.williamson@docker.com>
 David Xia <dxia@spotify.com>
 David Young <yangboh@cn.ibm.com>
@@ -451,8 +468,10 @@ Davide Ceretti <davide.ceretti@hogarthww.com>
 Dawn Chen <dawnchen@google.com>
 dbdd <wangtong2712@gmail.com>
 dcylabs <dcylabs@gmail.com>
+Debayan De <debayande@users.noreply.github.com>
 Deborah Gertrude Digges <deborah.gertrude.digges@gmail.com>
 deed02392 <georgehafiz@gmail.com>
+Deep Debroy <ddebroy@docker.com>
 Deng Guangxing <dengguangxing@huawei.com>
 Deni Bertovic <deni@kset.org>
 Denis Defreyne <denis@soundcloud.com>
@@ -477,6 +496,7 @@ Dieter Reuter <dieter.reuter@me.com>
 Dillon Dixon <dillondixon@gmail.com>
 Dima Stopel <dima@twistlock.com>
 Dimitri John Ledkov <dimitri.j.ledkov@intel.com>
+Dimitris Mandalidis <dimitris.mandalidis@gmail.com>
 Dimitris Rozakis <dimrozakis@gmail.com>
 Dimitry Andric <d.andric@activevideo.com>
 Dinesh Subhraveti <dineshs@altiscale.com>
@@ -490,6 +510,7 @@ Dmitri Shuralyov <shurcooL@gmail.com>
 Dmitry Demeshchuk <demeshchuk@gmail.com>
 Dmitry Gusev <dmitry.gusev@gmail.com>
 Dmitry Kononenko <d@dm42.ru>
+Dmitry Sharshakov <d3dx12.xx@gmail.com>
 Dmitry Shyshkin <dmitry@shyshkin.org.ua>
 Dmitry Smirnov <onlyjob@member.fsf.org>
 Dmitry V. Krivenok <krivenok.dmitry@gmail.com>
@@ -503,6 +524,7 @@ Don Kjer <don.kjer@gmail.com>
 Don Spaulding <donspauldingii@gmail.com>
 Donald Huang <don.hcd@gmail.com>
 Dong Chen <dongluo.chen@docker.com>
+Donghwa Kim <shanytt@gmail.com>
 Donovan Jones <git@gamma.net.nz>
 Doron Podoleanu <doronp@il.ibm.com>
 Doug Davis <dug@us.ibm.com>
@@ -579,7 +601,9 @@ Ewa Czechowska <ewa@ai-traders.com>
 Eystein Måløy Stenberg <eystein.maloy.stenberg@cfengine.com>
 ezbercih <cem.ezberci@gmail.com>
 Ezra Silvera <ezra@il.ibm.com>
+Fabian Kramm <kramm@covexo.com>
 Fabian Lauer <kontakt@softwareschmiede-saar.de>
+Fabian Raetz <fabian.raetz@gmail.com>
 Fabiano Rosas <farosas@br.ibm.com>
 Fabio Falci <fabiofalci@gmail.com>
 Fabio Kung <fabio.kung@gmail.com>
@@ -591,6 +615,7 @@ Faiz Khan <faizkhan00@gmail.com>
 falmp <chico.lopes@gmail.com>
 Fangming Fang <fangming.fang@arm.com>
 Fangyuan Gao <21551127@zju.edu.cn>
+fanjiyun <fan.jiyun@zte.com.cn>
 Fareed Dudhia <fareeddudhia@googlemail.com>
 Fathi Boudra <fathi.boudra@linaro.org>
 Federico Gimenez <fgimenez@coit.es>
@@ -621,6 +646,7 @@ Florin Patan <florinpatan@gmail.com>
 fonglh <fonglh@gmail.com>
 Foysal Iqbal <foysal.iqbal.fb@gmail.com>
 Francesc Campoy <campoy@google.com>
+Francesco Mari <mari.francesco@gmail.com>
 Francis Chuang <francis.chuang@boostport.com>
 Francisco Carriedo <fcarriedo@gmail.com>
 Francisco Souza <f@souza.cc>
@@ -634,6 +660,7 @@ Frederik Loeffert <frederik@zitrusmedia.de>
 Frederik Nordahl Jul Sabroe <frederikns@gmail.com>
 Freek Kalter <freek@kalteronline.org>
 Frieder Bluemle <frieder.bluemle@gmail.com>
+Fu JinLin <withlin@yeah.net>
 Félix Baylac-Jacqué <baylac.felix@gmail.com>
 Félix Cantournet <felix.cantournet@cloudwatt.com>
 Gabe Rosenhouse <gabe@missionst.com>
@@ -653,6 +680,7 @@ Gaël PORTAY <gael.portay@savoirfairelinux.com>
 Genki Takiuchi <genki@s21g.com>
 GennadySpb <lipenkov@gmail.com>
 Geoffrey Bachelet <grosfrais@gmail.com>
+Geon Kim <geon0250@gmail.com>
 George Kontridze <george@bugsnag.com>
 George MacRorie <gmacr31@gmail.com>
 George Xie <georgexsh@gmail.com>
@@ -665,6 +693,7 @@ Ghislain Bourgeois <ghislain.bourgeois@gmail.com>
 Giampaolo Mancini <giampaolo@trampolineup.com>
 Gianluca Borello <g.borello@gmail.com>
 Gildas Cuisinier <gildas.cuisinier@gcuisinier.net>
+Giovan Isa Musthofa <giovanism@outlook.co.id>
 gissehel <public-devgit-dantus@gissehel.org>
 Giuseppe Mazzotta <gdm85@users.noreply.github.com>
 Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
@@ -676,6 +705,7 @@ Gopikannan Venugopalsamy <gopikannan.venugopalsamy@gmail.com>
 Gosuke Miyashita <gosukenator@gmail.com>
 Gou Rao <gou@portworx.com>
 Govinda Fichtner <govinda.fichtner@googlemail.com>
+Grant Millar <grant@cylo.io>
 Grant Reaber <grant.reaber@gmail.com>
 Graydon Hoare <graydon@pobox.com>
 Greg Fausak <greg@tacodata.com>
@@ -694,7 +724,9 @@ Guruprasad <lgp171188@gmail.com>
 Gustav Sinder <gustav.sinder@gmail.com>
 gwx296173 <gaojing3@huawei.com>
 Günter Zöchbauer <guenter@gzoechbauer.com>
+haikuoliu <haikuo@amazon.com>
 Hakan Özler <hakan.ozler@kodcu.com>
+Hamish Hutchings <moredhel@aoeu.me>
 Hans Kristian Flaatten <hans@starefossen.com>
 Hans Rødtang <hansrodtang@gmail.com>
 Hao Shu Wei <haosw@cn.ibm.com>
@@ -702,6 +734,7 @@ Hao Zhang <21521210@zju.edu.cn>
 Harald Albers <github@albersweb.de>
 Harley Laue <losinggeneration@gmail.com>
 Harold Cooper <hrldcpr@gmail.com>
+Harrison Turton <harrisonturton@gmail.com>
 Harry Zhang <harryz@hyper.sh>
 Harshal Patil <harshal.patil@in.ibm.com>
 Harshal Patil <harshalp@linux.vnet.ibm.com>
@@ -713,6 +746,7 @@ Hector Castro <hectcastro@gmail.com>
 Helen Xie <chenjg@harmonycloud.cn>
 Henning Sprang <henning.sprang@gmail.com>
 Hiroshi Hatake <hatake@clear-code.com>
+Hiroyuki Sasagawa <hs19870702@gmail.com>
 Hobofan <goisser94@gmail.com>
 Hollie Teal <hollie@docker.com>
 Hong Xu <hong@topbug.net>
@@ -735,6 +769,7 @@ Ian Bishop <ianbishop@pace7.com>
 Ian Bull <irbull@gmail.com>
 Ian Calvert <ianjcalvert@gmail.com>
 Ian Campbell <ian.campbell@docker.com>
+Ian Chen <ianre657@gmail.com>
 Ian Lee <IanLee1521@gmail.com>
 Ian Main <imain@redhat.com>
 Ian Philpot <ian.philpot@microsoft.com>
@@ -752,9 +787,11 @@ Ilya Khlopotov <ilya.khlopotov@gmail.com>
 imre Fitos <imre.fitos+github@gmail.com>
 inglesp <peter.inglesby@gmail.com>
 Ingo Gottwald <in.gottwald@gmail.com>
+Innovimax <innovimax@gmail.com>
 Isaac Dupree <antispam@idupree.com>
 Isabel Jimenez <contact.isabeljimenez@gmail.com>
 Isao Jonas <isao.jonas@gmail.com>
+Iskander Sharipov <quasilyte@gmail.com>
 Ivan Babrou <ibobrik@gmail.com>
 Ivan Fraixedes <ifcdev@gmail.com>
 Ivan Grcic <igrcic@gmail.com>
@@ -785,6 +822,7 @@ James Mills <prologic@shortcircuit.net.au>
 James Nesbitt <james.nesbitt@wunderkraut.com>
 James Nugent <james@jen20.com>
 James Turnbull <james@lovedthanlost.net>
+James Watkins-Harvey <jwatkins@progi-media.com>
 Jamie Hannaford <jamie@limetree.org>
 Jamshid Afshar <jafshar@yahoo.com>
 Jan Keromnes <janx@linux.com>
@@ -817,6 +855,7 @@ jaxgeller <jacksongeller@gmail.com>
 Jay <imjching@hotmail.com>
 Jay <teguhwpurwanto@gmail.com>
 Jay Kamat <github@jgkamat.33mail.com>
+Jean Rouge <rougej+github@gmail.com>
 Jean-Baptiste Barth <jeanbaptiste.barth@gmail.com>
 Jean-Baptiste Dalido <jeanbaptiste@appgratis.com>
 Jean-Christophe Berthon <huygens@berthon.eu>
@@ -847,11 +886,13 @@ Jeroen Franse <jeroenfranse@gmail.com>
 Jeroen Jacobs <github@jeroenj.be>
 Jesse Dearing <jesse.dearing@gmail.com>
 Jesse Dubay <jesse@thefortytwo.net>
-Jessica Frazelle <jessfraz@google.com>
+Jessica Frazelle <acidburn@microsoft.com>
 Jezeniel Zapanta <jpzapanta22@gmail.com>
 Jhon Honce <jhonce@redhat.com>
 Ji.Zhilong <zhilongji@gmail.com>
+Jian Liao <jliao@alauda.io>
 Jian Zhang <zhangjian.fnst@cn.fujitsu.com>
+Jiang Jinyang <jjyruby@gmail.com>
 Jie Luo <luo612@zju.edu.cn>
 Jihyun Hwang <jhhwang@telcoware.com>
 Jilles Oldenbeuving <ojilles@gmail.com>
@@ -862,14 +903,14 @@ Jim Perrin <jperrin@centos.org>
 Jimmy Cuadra <jimmy@jimmycuadra.com>
 Jimmy Puckett <jimmy.puckett@spinen.com>
 Jimmy Song <rootsongjc@gmail.com>
-jimmyxian <jimmyxian2004@yahoo.com.cn>
 Jinsoo Park <cellpjs@gmail.com>
+Jintao Zhang <zhangjintao9020@gmail.com>
+Jiri Appl <jiria@microsoft.com>
 Jiri Popelka <jpopelka@redhat.com>
 Jiuyue Ma <majiuyue@huawei.com>
 Jiří Župka <jzupka@redhat.com>
-jjy <jiangjinyang@outlook.com>
-jmzwcn <jmzwcn@gmail.com>
 Joao Fernandes <joao.fernandes@docker.com>
+Joao Trindade <trindade.joao@gmail.com>
 Joe Beda <joe.github@bedafamily.com>
 Joe Doliner <jdoliner@pachyderm.io>
 Joe Ferguson <joe@infosiftr.com>
@@ -908,6 +949,7 @@ Jon Johnson <jonjohnson@google.com>
 Jon Surrell <jon.surrell@gmail.com>
 Jon Wedaman <jweede@gmail.com>
 Jonas Pfenniger <jonas@pfenniger.name>
+Jonathan A. Schweder <jonathanschweder@gmail.com>
 Jonathan A. Sternberg <jonathansternberg@gmail.com>
 Jonathan Boulle <jonathanboulle@gmail.com>
 Jonathan Camp <jonathan@irondojo.com>
@@ -928,7 +970,7 @@ Jordan Jennings <jjn2009@gmail.com>
 Jordan Sissel <jls@semicomplete.com>
 Jorge Marin <chipironcin@users.noreply.github.com>
 Jorit Kleine-Möllhoff <joppich@bricknet.de>
-Jose Diaz-Gonzalez <jose@seatgeek.com>
+Jose Diaz-Gonzalez <email@josediazgonzalez.com>
 Joseph Anthony Pasquale Holsten <joseph@josephholsten.com>
 Joseph Hager <ajhager@gmail.com>
 Joseph Kern <jkern@semafour.net>
@@ -982,7 +1024,8 @@ kargakis <kargakis@users.noreply.github.com>
 Karl Grzeszczak <karlgrz@gmail.com>
 Karol Duleba <mr.fuxi@gmail.com>
 Karthik Karanth <karanth.karthik@gmail.com>
-Karthik Nayak <Karthik.188@gmail.com>
+Karthik Nayak <karthik.188@gmail.com>
+Kasper Fabæch Brandt <poizan@poizan.dk>
 Kate Heddleston <kate.heddleston@gmail.com>
 Katie McLaughlin <katie@glasnt.com>
 Kato Kazuyoshi <kato.kazuyoshi@gmail.com>
@@ -990,6 +1033,7 @@ Katrina Owen <katrina.owen@gmail.com>
 Kawsar Saiyeed <kawsar.saiyeed@projiris.com>
 Kay Yan <kay.yan@daocloud.io>
 kayrus <kay.diam@gmail.com>
+Kazuhiro Sera <seratch@gmail.com>
 Ke Li <kel@splunk.com>
 Ke Xu <leonhartx.k@gmail.com>
 Kei Ohmura <ohmura.kei@gmail.com>
@@ -998,6 +1042,7 @@ Keli Hu <dev@keli.hu>
 Ken Cochrane <kencochrane@gmail.com>
 Ken Herner <kherner@progress.com>
 Ken ICHIKAWA <ichikawa.ken@jp.fujitsu.com>
+Ken Reese <krrgithub@gmail.com>
 Kenfe-Mickaël Laventure <mickael.laventure@gmail.com>
 Kenjiro Nakayama <nakayamakenjiro@gmail.com>
 Kent Johnson <kentoj@gmail.com>
@@ -1035,11 +1080,13 @@ Krasimir Georgiev <support@vip-consult.co.uk>
 Kris-Mikael Krister <krismikael@protonmail.com>
 Kristian Haugene <kristian.haugene@capgemini.com>
 Kristina Zabunova <triara.xiii@gmail.com>
-krrg <krrgithub@gmail.com>
+Krystian Wojcicki <kwojcicki@sympatico.ca>
 Kun Zhang <zkazure@gmail.com>
 Kunal Kushwaha <kushwaha_kunal_v7@lab.ntt.co.jp>
+Kunal Tyagi <tyagi.kunal@live.com>
 Kyle Conroy <kyle.j.conroy@gmail.com>
 Kyle Linden <linden.kyle@gmail.com>
+Kyle Wuolle <kyle.wuolle@gmail.com>
 kyu <leehk1227@gmail.com>
 Lachlan Coote <lcoote@vmware.com>
 Lai Jiangshan <jiangshanlai@gmail.com>
@@ -1060,6 +1107,7 @@ Leandro Siqueira <leandro.siqueira@gmail.com>
 Lee Chao <932819864@qq.com>
 Lee, Meng-Han <sunrisedm4@gmail.com>
 leeplay <hyeongkyu.lee@navercorp.com>
+Lei Gong <lgong@alauda.io>
 Lei Jitang <leijitang@huawei.com>
 Len Weincier <len@cloudafrica.net>
 Lennie <github@consolejunkie.net>
@@ -1076,6 +1124,8 @@ Liana Lo <liana.lixia@gmail.com>
 Liang Mingqiang <mqliang.zju@gmail.com>
 Liang-Chi Hsieh <viirya@gmail.com>
 Liao Qingwei <liaoqingwei@huawei.com>
+Lifubang <lifubang@acmcoder.com>
+Lihua Tang <lhtang@alauda.io>
 Lily Guo <lily.guo@docker.com>
 limsy <seongyeol37@gmail.com>
 Lin Lu <doraalin@163.com>
@@ -1094,7 +1144,8 @@ Lloyd Dewolf <foolswisdom@gmail.com>
 Lokesh Mandvekar <lsm5@fedoraproject.org>
 longliqiang88 <394564827@qq.com>
 Lorenz Leutgeb <lorenz.leutgeb@gmail.com>
-Lorenzo Fontana <lo@linux.com>
+Lorenzo Fontana <fontanalorenz@gmail.com>
+Lotus Fenn <fenn.lotus@gmail.com>
 Louis Opter <kalessin@kalessin.fr>
 Luca Favatella <luca.favatella@erlang-solutions.com>
 Luca Marturana <lucamarturana@gmail.com>
@@ -1151,6 +1202,7 @@ Marius Gundersen <me@mariusgundersen.net>
 Marius Sturm <marius@graylog.com>
 Marius Voila <marius.voila@gmail.com>
 Mark Allen <mrallen1@yahoo.com>
+Mark Jeromin <mark.jeromin@sysfrog.net>
 Mark McGranaghan <mmcgrana@gmail.com>
 Mark McKinstry <mmckinst@umich.edu>
 Mark Milstein <mark@epiloque.com>
@@ -1167,6 +1219,7 @@ Martijn van Oosterhout <kleptog@svana.org>
 Martin Honermeyer <maze@strahlungsfrei.de>
 Martin Kelly <martin@surround.io>
 Martin Mosegaard Amdisen <martin.amdisen@praqma.com>
+Martin Muzatko <martin@happy-css.com>
 Martin Redmond <redmond.martin@gmail.com>
 Mary Anthony <mary.anthony@docker.com>
 Masahito Zembutsu <zembutsu@users.noreply.github.com>
@@ -1200,6 +1253,7 @@ Matthias Klumpp <matthias@tenstral.net>
 Matthias Kühnle <git.nivoc@neverbox.com>
 Matthias Rampke <mr@soundcloud.com>
 Matthieu Hauglustaine <matt.hauglustaine@gmail.com>
+Mattias Jernberg <nostrad@gmail.com>
 Mauricio Garavaglia <mauricio@medallia.com>
 mauriyouth <mauriyouth@gmail.com>
 Max Shytikov <mshytikov@gmail.com>
@@ -1208,6 +1262,8 @@ Maxim Ivanov <ivanov.maxim@gmail.com>
 Maxim Kulkin <mkulkin@mirantis.com>
 Maxim Treskin <zerthurd@gmail.com>
 Maxime Petazzoni <max@signalfuse.com>
+Maximiliano Maccanti <maccanti@amazon.com>
+Maxwell <csuhp007@gmail.com>
 Meaglith Ma <genedna@gmail.com>
 meejah <meejah@meejah.ca>
 Megan Kostick <mkostick@us.ibm.com>
@@ -1248,8 +1304,9 @@ Michal Wieczorek <wieczorek-michal@wp.pl>
 Michaël Pailloncy <mpapo.dev@gmail.com>
 Michał Czeraszkiewicz <czerasz@gmail.com>
 Michał Gryko <github@odkurzacz.org>
-Michiel@unhosted <michiel@unhosted.org>
+Michiel de Jong <michiel@unhosted.org>
-Mickaël FORTUNATO <morsi.morsicus@gmail.com>
+Mickaël Fortunato <morsi.morsicus@gmail.com>
+Mickaël Remars <mickael@remars.com>
 Miguel Angel Fernández <elmendalerenda@gmail.com>
 Miguel Morales <mimoralea@gmail.com>
 Mihai Borobocea <MihaiBorob@gmail.com>
@@ -1280,6 +1337,7 @@ Mitch Capper <mitch.capper@gmail.com>
 Mizuki Urushida <z11111001011@gmail.com>
 mlarcher <github@ringabell.org>
 Mohammad Banikazemi <mb@us.ibm.com>
+Mohammad Nasirifar <farnasirim@gmail.com>
 Mohammed Aaqib Ansari <maaquib@gmail.com>
 Mohit Soni <mosoni@ebay.com>
 Moorthy RS <rsmoorthy@gmail.com>
@@ -1304,6 +1362,7 @@ Nan Monnand Deng <monnand@gmail.com>
 Naoki Orii <norii@cs.cmu.edu>
 Natalie Parker <nparker@omnifone.com>
 Natanael Copa <natanael.copa@docker.com>
+Natasha Jarus <linuxmercedes@gmail.com>
 Nate Brennand <nate.brennand@clever.com>
 Nate Eagleson <nate@nateeag.com>
 Nate Jones <nate@endot.org>
@@ -1337,6 +1396,7 @@ Nicolas Dudebout <nicolas.dudebout@gatech.edu>
 Nicolas Goy <kuon@goyman.com>
 Nicolas Kaiser <nikai@nikai.net>
 Nicolas Sterchele <sterchele.nicolas@gmail.com>
+Nicolas V Castet <nvcastet@us.ibm.com>
 Nicolás Hock Isaza <nhocki@gmail.com>
 Nigel Poulton <nigelpoulton@hotmail.com>
 Nik Nyby <nikolas@gnu.org>
@@ -1352,6 +1412,7 @@ Noah Treuhaft <noah.treuhaft@docker.com>
 NobodyOnSE <ich@sektor.selfip.com>
 noducks <onemannoducks@gmail.com>
 Nolan Darilek <nolan@thewordnerd.info>
+Noriki Nakamura <noriki.nakamura@miraclelinux.com>
 nponeccop <andy.melnikov@gmail.com>
 Nuutti Kotivuori <naked@iki.fi>
 nzwsch <hi@nzwsch.com>
@@ -1363,8 +1424,11 @@ Ohad Schneider <ohadschn@users.noreply.github.com>
 ohmystack <jun.jiang02@ele.me>
 Ole Reifschneider <mail@ole-reifschneider.de>
 Oliver Neal <ItsVeryWindy@users.noreply.github.com>
+Oliver Reason <oli@overrateddev.co>
 Olivier Gambier <dmp42@users.noreply.github.com>
 Olle Jonsson <olle.jonsson@gmail.com>
+Olli Janatuinen <olli.janatuinen@gmail.com>
+Omri Shiv <Omri.Shiv@teradata.com>
 Oriol Francès <oriolfa@gmail.com>
 Oskar Niburski <oskarniburski@gmail.com>
 Otto Kekäläinen <otto@seravo.fi>
@@ -1420,6 +1484,7 @@ Peter Edge <peter.edge@gmail.com>
 Peter Ericson <pdericson@gmail.com>
 Peter Esbensen <pkesbensen@gmail.com>
 Peter Jaffe <pjaffe@nevo.com>
+Peter Kang <peter@spell.run>
 Peter Malmgren <ptmalmgren@gmail.com>
 Peter Salvatore <peter@psftw.com>
 Peter Volpe <petervo@redhat.com>
@@ -1452,6 +1517,7 @@ Prasanna Gautam <prasannagautam@gmail.com>
 Pratik Karki <prertik@outlook.com>
 Prayag Verma <prayag.verma@gmail.com>
 Priya Wadhwa <priyawadhwa@google.com>
+Projjol Banerji <probaner23@gmail.com>
 Przemek Hejman <przemyslaw.hejman@gmail.com>
 Pure White <daniel48@126.com>
 pysqz <randomq@126.com>
@@ -1462,6 +1528,7 @@ Quentin Brossard <qbrossard@gmail.com>
 Quentin Perez <qperez@ocs.online.net>
 Quentin Tayssier <qtayssier@gmail.com>
 r0n22 <cameron.regan@gmail.com>
+Radostin Stoyanov <rstoyanov1@gmail.com>
 Rafal Jeczalik <rjeczalik@gmail.com>
 Rafe Colton <rafael.colton@gmail.com>
 Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
@@ -1475,6 +1542,7 @@ Ralph Bean <rbean@redhat.com>
 Ramkumar Ramachandra <artagnon@gmail.com>
 Ramon Brooker <rbrooker@aetherealmind.com>
 Ramon van Alteren <ramon@vanalteren.nl>
+RaviTeja Pothana <ravi-teja@live.com>
 Ray Tsang <rayt@google.com>
 ReadmeCritic <frankensteinbot@gmail.com>
 Recursive Madman <recursive.madman@gmx.de>
@@ -1524,6 +1592,7 @@ Roel Van Nyen <roel.vannyen@gmail.com>
 Roger Peppe <rogpeppe@gmail.com>
 Rohit Jnagal <jnagal@google.com>
 Rohit Kadam <rohit.d.kadam@gmail.com>
+Rohit Kapur <rkapur@flatiron.com>
 Rojin George <rojingeorge@huawei.com>
 Roland Huß <roland@jolokia.org>
 Roland Kammerer <roland.kammerer@linbit.com>
@@ -1533,6 +1602,9 @@ Roman Dudin <katrmr@gmail.com>
 Roman Strashkin <roman.strashkin@gmail.com>
 Ron Smits <ron.smits@gmail.com>
 Ron Williams <ron.a.williams@gmail.com>
+Rong Gao <gaoronggood@163.com>
+Rong Zhang <rongzhang@alauda.io>
+Rongxiang Song <tinysong1226@gmail.com>
 root <docker-dummy@example.com>
 root <root@lxdebmas.marist.edu>
 root <root@ubuntu-14.04-amd64-vbox>
@@ -1544,8 +1616,10 @@ Rovanion Luckey <rovanion.luckey@gmail.com>
 Royce Remer <royceremer@gmail.com>
 Rozhnov Alexandr <nox73@ya.ru>
 Rudolph Gottesheim <r.gottesheim@loot.at>
+Rui Cao <ruicao@alauda.io>
 Rui Lopes <rgl@ruilopes.com>
 Runshen Zhu <runshen.zhu@gmail.com>
+Russ Magee <rmagee@gmail.com>
 Ryan Abrams <rdabrams@gmail.com>
 Ryan Anderson <anderson.ryanc@gmail.com>
 Ryan Aslett <github@mixologic.com>
@@ -1564,6 +1638,7 @@ Ryan Wallner <ryan.wallner@clusterhq.com>
 Ryan Zhang <ryan.zhang@docker.com>
 ryancooper7 <ryan.cooper7@gmail.com>
 RyanDeng <sheldon.d1018@gmail.com>
+Ryo Nakao <nakabonne@gmail.com>
 Rémy Greinhofer <remy.greinhofer@livelovely.com>
 s. rannou <mxs@sbrk.org>
 s00318865 <sunyuan3@huawei.com>
@@ -1572,6 +1647,7 @@ Sachin Joshi <sachin_jayant_joshi@hotmail.com>
 Sagar Hani <sagarhani33@gmail.com>
 Sainath Grandhi <sainath.grandhi@intel.com>
 Sakeven Jiang <jc5930@sina.cn>
+Salahuddin Khan <salah@docker.com>
 Sally O'Malley <somalley@redhat.com>
 Sam Abed <sam.abed@gmail.com>
 Sam Alba <sam.alba@gmail.com>
@@ -1593,6 +1669,7 @@ Santhosh Manohar <santhosh@docker.com>
 sapphiredev <se.imas.kr@gmail.com>
 Sargun Dhillon <sargun@netflix.com>
 Sascha Andres <sascha.andres@outlook.com>
+Sascha Grunert <sgrunert@suse.com>
 Satnam Singh <satnam@raintown.org>
 Satoshi Amemiya <satoshi_amemiya@voyagegroup.com>
 Satoshi Tagomori <tagomoris@gmail.com>
@@ -1619,7 +1696,9 @@ Serge Hallyn <serge.hallyn@ubuntu.com>
 Sergey Alekseev <sergey.alekseev.minsk@gmail.com>
 Sergey Evstifeev <sergey.evstifeev@gmail.com>
 Sergii Kabashniuk <skabashnyuk@codenvy.com>
+Sergio Lopez <slp@redhat.com>
 Serhat Gülçiçek <serhat25@gmail.com>
+SeungUkLee <lsy931106@gmail.com>
 Sevki Hasirci <s@sevki.org>
 Shane Canon <scanon@lbl.gov>
 Shane da Silva <shane@dasilva.io>
@@ -1647,6 +1726,7 @@ Sidhartha Mani <sidharthamn@gmail.com>
 sidharthamani <sid@rancher.com>
 Silas Sewell <silas@sewell.org>
 Silvan Jegen <s.jegen@gmail.com>
+Simão Reis <smnrsti@gmail.com>
 Simei He <hesimei@zju.edu.cn>
 Simon Eskildsen <sirup@sirupsen.com>
 Simon Ferquel <simon.ferquel@docker.com>
@@ -1714,10 +1794,11 @@ tang0th <tang0th@gmx.com>
 Tangi Colin <tangicolin@gmail.com>
 Tatsuki Sugiura <sugi@nemui.org>
 Tatsushi Inagaki <e29253@jp.ibm.com>
+Taylan Isikdemir <taylani@google.com>
 Taylor Jones <monitorjbl@gmail.com>
-tbonza <tylers.pile@gmail.com>
 Ted M. Young <tedyoung@gmail.com>
 Tehmasp Chaudhri <tehmasp@gmail.com>
+Tejaswini Duggaraju <naduggar@microsoft.com>
 Tejesh Mehta <tejesh.mehta@gmail.com>
 terryding77 <550147740@qq.com>
 tgic <farmer1992@gmail.com>
@@ -1811,6 +1892,7 @@ Tristan Carel <tristan@cogniteev.com>
 Troy Denton <trdenton@gmail.com>
 Tycho Andersen <tycho@docker.com>
 Tyler Brock <tyler.brock@gmail.com>
+Tyler Brown <tylers.pile@gmail.com>
 Tzu-Jung Lee <roylee17@gmail.com>
 uhayate <uhayate.gong@daocloud.io>
 Ulysse Carion <ulyssecarion@gmail.com>
@@ -1871,6 +1953,7 @@ Wassim Dhif <wassimdhif@gmail.com>
 Wayne Chang <wayne@neverfear.org>
 Wayne Song <wsong@docker.com>
 Weerasak Chongnguluam <singpor@gmail.com>
+Wei Fu <fuweid89@gmail.com>
 Wei Wu <wuwei4455@gmail.com>
 Wei-Ting Kuo <waitingkuo0527@gmail.com>
 weipeng <weipeng@tuscloud.io>
@@ -1900,17 +1983,24 @@ WiseTrem <shepelyov.g@gmail.com>
 Wolfgang Powisch <powo@powo.priv.at>
 Wonjun Kim <wonjun.kim@navercorp.com>
 xamyzhao <x.amy.zhao@gmail.com>
+Xian Chaobo <xianchaobo@huawei.com>
 Xianglin Gao <xlgao@zju.edu.cn>
 Xianlu Bird <xianlubird@gmail.com>
+Xiao YongBiao <xyb4638@gmail.com>
 XiaoBing Jiang <s7v7nislands@gmail.com>
+Xiaodong Zhang <a4012017@sina.com>
+Xiaoxi He <xxhe@alauda.io>
 Xiaoxu Chen <chenxiaoxu14@otcaix.iscas.ac.cn>
 Xiaoyu Zhang <zhang.xiaoyu33@zte.com.cn>
+xichengliudui <1693291525@qq.com>
 xiekeyang <xiekeyang@huawei.com>
+Ximo Guanter Gonzálbez <joaquin.guantergonzalbez@telefonica.com>
 Xinbo Weng <xihuanbo_0521@zju.edu.cn>
 Xinzi Zhou <imdreamrunner@gmail.com>
 Xiuming Chen <cc@cxm.cc>
 Xuecong Liao <satorulogic@gmail.com>
 xuzhaokui <cynicholas@gmail.com>
+Yadnyawalkya Tale <ytale@redhat.com>
 Yahya <ya7yaz@gmail.com>
 YAMADA Tsuyoshi <tyamada@minimum2scp.org>
 Yamasaki Masahide <masahide.y@gmail.com>
@@ -1930,6 +2020,7 @@ Yihang Ho <hoyihang5@gmail.com>
 Ying Li <ying.li@docker.com>
 Yohei Ueda <yohei@jp.ibm.com>
 Yong Tang <yong.tang.github@outlook.com>
+Yongxin Li <yxli@alauda.io>
 Yongzhi Pan <panyongzhi@gmail.com>
 Yosef Fertel <yfertel@gmail.com>
 You-Sheng Yang (楊有勝) <vicamo@gmail.com>
@@ -1940,9 +2031,12 @@ Yu Peng <yu.peng36@zte.com.cn>
 Yu-Ju Hong <yjhong@google.com>
 Yuan Sun <sunyuan3@huawei.com>
 Yuanhong Peng <pengyuanhong@huawei.com>
+Yue Zhang <zy675793960@yeah.net>
 Yuhao Fang <fangyuhao@gmail.com>
+Yuichiro Kaneko <spiketeika@gmail.com>
 Yunxiang Huang <hyxqshk@vip.qq.com>
 Yurii Rashkovskii <yrashk@gmail.com>
+Yusuf Tarık Günaydın <yusuf_tarik@hotmail.com>
 Yves Junqueira <yves.junqueira@gmail.com>
 Zac Dover <zdover@redhat.com>
 Zach Borboa <zachborboa@gmail.com>
@@ -1959,8 +2053,10 @@ ZhangHang <stevezhang2014@gmail.com>
 zhangxianwei <xianwei.zw@alibaba-inc.com>
 Zhenan Ye <21551168@zju.edu.cn>
 zhenghenghuo <zhenghenghuo@zju.edu.cn>
+Zhenhai Gao <gaozh1988@live.com>
 Zhenkun Bi <bi.zhenkun@zte.com.cn>
 Zhou Hao <zhouhao@cn.fujitsu.com>
+Zhoulin Xie <zhoulin.xie@daocloud.io>
 Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
 Zhu Kunjia <zhu.kunjia@zte.com.cn>
 Zhuoyun Wei <wzyboy@wzyboy.org>

vendor/github.com/docker/docker/LICENSE

@@ -176,7 +176,7 @@
 
    END OF TERMS AND CONDITIONS
 
-   Copyright 2013-2017 Docker, Inc.
+   Copyright 2013-2018 Docker, Inc.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

vendor/github.com/docker/docker/NOTICE

@@ -3,7 +3,7 @@ Copyright 2012-2017 Docker, Inc.
 
 This product includes software developed at Docker, Inc. (https://www.docker.com).
 
-This product contains software (https://github.com/kr/pty) developed
+This product contains software (https://github.com/creack/pty) developed
 by Keith Rarick, licensed under the MIT License.
 
 The following is courtesy of our legal counsel:

vendor/github.com/docker/docker/api/common.go

@@ -3,7 +3,7 @@ package api // import "github.com/docker/docker/api"
 // Common constants for daemon and client.
 const (
 	// DefaultVersion of Current REST API
-	DefaultVersion = "1.39"
+	DefaultVersion = "1.40"
 
 	// NoBaseImageSpecifier is the symbol used by the FROM
 	// command to specify that no base image is to be used.

vendor/github.com/docker/docker/api/types/client.go

@@ -50,7 +50,7 @@ type ContainerCommitOptions struct {
 
 // ContainerExecInspect holds information returned by exec inspect.
 type ContainerExecInspect struct {
-	ExecID      string
+	ExecID      string `json:"ID"`
 	ContainerID string
 	Running     bool
 	ExitCode    int
@@ -187,6 +187,15 @@ type ImageBuildOptions struct {
 	// build request. The same identifier can be used to gracefully cancel the
 	// build with the cancel request.
 	BuildID string
+	// Outputs defines configurations for exporting build results. Only supported
+	// in BuildKit mode
+	Outputs []ImageBuildOutput
+}
+
+// ImageBuildOutput defines configuration for exporting a build result
+type ImageBuildOutput struct {
+	Type  string
+	Attrs map[string]string
 }
 
 // BuilderVersion sets the version of underlying builder to use

vendor/github.com/docker/docker/api/types/container/config.go

@@ -54,7 +54,7 @@ type Config struct {
 	Env             []string            // List of environment variable to set in the container
 	Cmd             strslice.StrSlice   // Command to run when starting the container
 	Healthcheck     *HealthConfig       `json:",omitempty"` // Healthcheck describes how to check the container is healthy
-	ArgsEscaped     bool                `json:",omitempty"` // True if command is already escaped (Windows specific)
+	ArgsEscaped     bool                `json:",omitempty"` // True if command is already escaped (meaning treat as a command line) (Windows specific).
 	Image           string              // Name of the image as it was passed by the operator (e.g. could be symbolic)
 	Volumes         map[string]struct{} // List of volumes (mounts) used for the container
 	WorkingDir      string              // Current directory (PWD) in the command will be launched

vendor/github.com/docker/docker/api/types/container/container_changes.go

@@ -1,4 +1,4 @@
-package container
+package container // import "github.com/docker/docker/api/types/container"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/api/types/container/container_create.go

@@ -1,4 +1,4 @@
-package container
+package container // import "github.com/docker/docker/api/types/container"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/api/types/container/container_top.go

@@ -1,4 +1,4 @@
-package container
+package container // import "github.com/docker/docker/api/types/container"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/api/types/container/container_update.go

@@ -1,4 +1,4 @@
-package container
+package container // import "github.com/docker/docker/api/types/container"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/api/types/container/container_wait.go

@@ -1,4 +1,4 @@
-package container
+package container // import "github.com/docker/docker/api/types/container"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/api/types/container/host_config.go

@@ -244,6 +244,16 @@ func (n PidMode) Container() string {
 	return ""
 }
 
+// DeviceRequest represents a request for devices from a device driver.
+// Used by GPU device drivers.
+type DeviceRequest struct {
+	Driver       string            // Name of device driver
+	Count        int               // Number of devices to request (-1 = All)
+	DeviceIDs    []string          // List of device IDs as recognizable by the device driver
+	Capabilities [][]string        // An OR list of AND lists of device capabilities (e.g. "gpu")
+	Options      map[string]string // Options to pass onto the device driver
+}
+
 // DeviceMapping represents the device mapping between the host and the container.
 type DeviceMapping struct {
 	PathOnHost        string
@@ -327,13 +337,14 @@ type Resources struct {
 	CpusetMems           string          // CpusetMems 0-2, 0,1
 	Devices              []DeviceMapping // List of devices to map inside the container
 	DeviceCgroupRules    []string        // List of rule to be added to the device cgroup
-	DiskQuota            int64           // Disk limit (in bytes)
+	DeviceRequests       []DeviceRequest // List of device requests for device drivers
 	KernelMemory         int64           // Kernel memory limit (in bytes)
+	KernelMemoryTCP      int64           // Hard limit for kernel TCP buffer memory (in bytes)
 	MemoryReservation    int64           // Memory soft limit (in bytes)
 	MemorySwap           int64           // Total memory usage (memory + swap); set `-1` to enable unlimited swap
 	MemorySwappiness     *int64          // Tuning container memory swappiness behaviour
 	OomKillDisable       *bool           // Whether to disable OOM Killer or not
-	PidsLimit            int64           // Setting pids limit for a container
+	PidsLimit            *int64          // Setting PIDs limit for a container; Set `0` or `-1` for unlimited, or `null` to not change.
 	Ulimits              []*units.Ulimit // List of ulimits to be set in the container
 
 	// Applicable to Windows
@@ -369,9 +380,10 @@ type HostConfig struct {
 	// Applicable to UNIX platforms
 	CapAdd          strslice.StrSlice // List of kernel capabilities to add to the container
 	CapDrop         strslice.StrSlice // List of kernel capabilities to remove from the container
-	DNS             []string          `json:"Dns"`        // List of DNS server to lookup
+	Capabilities    []string          `json:"Capabilities"` // List of kernel capabilities to be available for container (this overrides the default set)
-	DNSOptions      []string          `json:"DnsOptions"` // List of DNSOption to look for
+	DNS             []string          `json:"Dns"`          // List of DNS server to lookup
-	DNSSearch       []string          `json:"DnsSearch"`  // List of DNSSearch to look for
+	DNSOptions      []string          `json:"DnsOptions"`   // List of DNSOption to look for
+	DNSSearch       []string          `json:"DnsSearch"`    // List of DNSSearch to look for
 	ExtraHosts      []string          // List of extra hosts
 	GroupAdd        []string          // List of additional groups that the container process will run as
 	IpcMode         IpcMode           // IPC namespace to use for the container

vendor/github.com/docker/docker/api/types/filters/parse.go

@@ -5,7 +5,6 @@ package filters // import "github.com/docker/docker/api/types/filters"
 
 import (
 	"encoding/json"
-	"errors"
 	"regexp"
 	"strings"
 
@@ -37,39 +36,13 @@ func NewArgs(initialArgs ...KeyValuePair) Args {
 	return args
 }
 
-// ParseFlag parses a key=value string and adds it to an Args.
+// Keys returns all the keys in list of Args
-//
+func (args Args) Keys() []string {
-// Deprecated: Use Args.Add()
+	keys := make([]string, 0, len(args.fields))
-func ParseFlag(arg string, prev Args) (Args, error) {
+	for k := range args.fields {
-	filters := prev
+		keys = append(keys, k)
-	if len(arg) == 0 {
-		return filters, nil
 	}
-
+	return keys
-	if !strings.Contains(arg, "=") {
-		return filters, ErrBadFormat
-	}
-
-	f := strings.SplitN(arg, "=", 2)
-
-	name := strings.ToLower(strings.TrimSpace(f[0]))
-	value := strings.TrimSpace(f[1])
-
-	filters.Add(name, value)
-
-	return filters, nil
-}
-
-// ErrBadFormat is an error returned when a filter is not in the form key=value
-//
-// Deprecated: this error will be removed in a future version
-var ErrBadFormat = errors.New("bad format of filter (expected name=value)")
-
-// ToParam encodes the Args as args JSON encoded string
-//
-// Deprecated: use ToJSON
-func ToParam(a Args) (string, error) {
-	return ToJSON(a)
 }
 
 // MarshalJSON returns a JSON byte representation of the Args
@@ -107,13 +80,6 @@ func ToParamWithVersion(version string, a Args) (string, error) {
 	return ToJSON(a)
 }
 
-// FromParam decodes a JSON encoded string into Args
-//
-// Deprecated: use FromJSON
-func FromParam(p string) (Args, error) {
-	return FromJSON(p)
-}
-
 // FromJSON decodes a JSON encoded string into Args
 func FromJSON(p string) (Args, error) {
 	args := NewArgs()
@@ -275,14 +241,6 @@ func (args Args) FuzzyMatch(key, source string) bool {
 	return false
 }
 
-// Include returns true if the key exists in the mapping
-//
-// Deprecated: use Contains
-func (args Args) Include(field string) bool {
-	_, ok := args.fields[field]
-	return ok
-}
-
 // Contains returns true if the key exists in the mapping
 func (args Args) Contains(field string) bool {
 	_, ok := args.fields[field]
@@ -323,6 +281,22 @@ func (args Args) WalkValues(field string, op func(value string) error) error {
 	return nil
 }
 
+// Clone returns a copy of args.
+func (args Args) Clone() (newArgs Args) {
+	newArgs.fields = make(map[string]map[string]bool, len(args.fields))
+	for k, m := range args.fields {
+		var mm map[string]bool
+		if m != nil {
+			mm = make(map[string]bool, len(m))
+			for kk, v := range m {
+				mm[kk] = v
+			}
+		}
+		newArgs.fields[k] = mm
+	}
+	return newArgs
+}
+
 func deprecatedArgs(d map[string][]string) map[string]map[string]bool {
 	m := map[string]map[string]bool{}
 	for k, v := range d {

vendor/github.com/docker/docker/api/types/image/image_history.go

@@ -1,4 +1,4 @@
-package image
+package image // import "github.com/docker/docker/api/types/image"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/api/types/mount/mount.go

@@ -79,7 +79,8 @@ const (
 
 // BindOptions defines options specific to mounts of type "bind".
 type BindOptions struct {
-	Propagation Propagation `json:",omitempty"`
+	Propagation  Propagation `json:",omitempty"`
+	NonRecursive bool        `json:",omitempty"`
 }
 
 // VolumeOptions represents the options for a mount of type volume.

vendor/github.com/docker/docker/api/types/network/network.go

@@ -112,12 +112,13 @@ type ConfigReference struct {
 }
 
 var acceptedFilters = map[string]bool{
-	"driver": true,
+	"dangling": true,
-	"type":   true,
+	"driver":   true,
-	"name":   true,
+	"id":       true,
-	"id":     true,
+	"label":    true,
-	"label":  true,
+	"name":     true,
-	"scope":  true,
+	"scope":    true,
+	"type":     true,
 }
 
 // ValidateFilters validates the list of filter args with the available filters.

vendor/github.com/docker/docker/api/types/seccomp.go

@@ -77,8 +77,9 @@ type Arg struct {
 
 // Filter is used to conditionally apply Seccomp rules
 type Filter struct {
-	Caps   []string `json:"caps,omitempty"`
+	Caps      []string `json:"caps,omitempty"`
-	Arches []string `json:"arches,omitempty"`
+	Arches    []string `json:"arches,omitempty"`
+	MinKernel string   `json:"minKernel,omitempty"`
 }
 
 // Syscall is used to match a group of syscalls in Seccomp

vendor/github.com/docker/docker/api/types/stats.go

@@ -120,7 +120,7 @@ type NetworkStats struct {
 	RxBytes uint64 `json:"rx_bytes"`
 	// Packets received. Windows and Linux.
 	RxPackets uint64 `json:"rx_packets"`
-	// Received errors. Not used on Windows. Note that we dont `omitempty` this
+	// Received errors. Not used on Windows. Note that we don't `omitempty` this
 	// field as it is expected in the >=v1.21 API stats structure.
 	RxErrors uint64 `json:"rx_errors"`
 	// Incoming packets dropped. Windows and Linux.
@@ -129,7 +129,7 @@ type NetworkStats struct {
 	TxBytes uint64 `json:"tx_bytes"`
 	// Packets sent. Windows and Linux.
 	TxPackets uint64 `json:"tx_packets"`
-	// Sent errors. Not used on Windows. Note that we dont `omitempty` this
+	// Sent errors. Not used on Windows. Note that we don't `omitempty` this
 	// field as it is expected in the >=v1.21 API stats structure.
 	TxErrors uint64 `json:"tx_errors"`
 	// Outgoing packets dropped. Windows and Linux.

vendor/github.com/docker/docker/api/types/swarm/config.go

@@ -27,9 +27,14 @@ type ConfigReferenceFileTarget struct {
 	Mode os.FileMode
 }
 
+// ConfigReferenceRuntimeTarget is a target for a config specifying that it
+// isn't mounted into the container but instead has some other purpose.
+type ConfigReferenceRuntimeTarget struct{}
+
 // ConfigReference is a reference to a config in swarm
 type ConfigReference struct {
-	File       *ConfigReferenceFileTarget
+	File       *ConfigReferenceFileTarget    `json:",omitempty"`
+	Runtime    *ConfigReferenceRuntimeTarget `json:",omitempty"`
 	ConfigID   string
 	ConfigName string
 }

vendor/github.com/docker/docker/api/types/swarm/container.go

@@ -33,6 +33,7 @@ type SELinuxContext struct {
 
 // CredentialSpec for managed service account (Windows only)
 type CredentialSpec struct {
+	Config   string
 	File     string
 	Registry string
 }
@@ -71,4 +72,5 @@ type ContainerSpec struct {
 	Secrets   []*SecretReference  `json:",omitempty"`
 	Configs   []*ConfigReference  `json:",omitempty"`
 	Isolation container.Isolation `json:",omitempty"`
+	Sysctls   map[string]string   `json:",omitempty"`
 }

vendor/github.com/docker/docker/api/types/swarm/swarm.go

@@ -14,6 +14,7 @@ type ClusterInfo struct {
 	RootRotationInProgress bool
 	DefaultAddrPool        []string
 	SubnetSize             uint32
+	DataPathPort           uint32
 }
 
 // Swarm represents a swarm.
@@ -153,6 +154,7 @@ type InitRequest struct {
 	ListenAddr       string
 	AdvertiseAddr    string
 	DataPathAddr     string
+	DataPathPort     uint32
 	ForceNewCluster  bool
 	Spec             Spec
 	AutoLockManagers bool
@@ -207,6 +209,8 @@ type Info struct {
 	Managers       int `json:",omitempty"`
 
 	Cluster *ClusterInfo `json:",omitempty"`
+
+	Warnings []string `json:",omitempty"`
 }
 
 // Peer represents a peer.

vendor/github.com/docker/docker/api/types/swarm/task.go

@@ -127,6 +127,7 @@ type ResourceRequirements struct {
 type Placement struct {
 	Constraints []string              `json:",omitempty"`
 	Preferences []PlacementPreference `json:",omitempty"`
+	MaxReplicas uint64                `json:",omitempty"`
 
 	// Platforms stores all the platforms that the image can run on.
 	// This field is used in the platform filter for scheduling. If empty,

vendor/github.com/docker/docker/api/types/types.go

@@ -158,10 +158,12 @@ type Info struct {
 	MemoryLimit        bool
 	SwapLimit          bool
 	KernelMemory       bool
+	KernelMemoryTCP    bool
 	CPUCfsPeriod       bool `json:"CpuCfsPeriod"`
 	CPUCfsQuota        bool `json:"CpuCfsQuota"`
 	CPUShares          bool
 	CPUSet             bool
+	PidsLimit          bool
 	IPv4Forwarding     bool
 	BridgeNfIptables   bool
 	BridgeNfIP6tables  bool `json:"BridgeNfIp6tables"`

vendor/github.com/docker/docker/api/types/volume/volume_create.go

@@ -1,4 +1,4 @@
-package volume
+package volume // import "github.com/docker/docker/api/types/volume"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/api/types/volume/volume_list.go

@@ -1,4 +1,4 @@
-package volume
+package volume // import "github.com/docker/docker/api/types/volume"
 
 // ----------------------------------------------------------------------------
 // DO NOT EDIT THIS FILE

vendor/github.com/docker/docker/client/README.md

@@ -16,7 +16,7 @@ import (
 )
 
 func main() {
-	cli, err := client.NewEnvClient()
+	cli, err := client.NewClientWithOpts(client.FromEnv)
 	if err != nil {
 		panic(err)
 	}

vendor/github.com/docker/docker/client/build_cancel.go

@@ -11,10 +11,6 @@ func (cli *Client) BuildCancel(ctx context.Context, id string) error {
 	query.Set("id", id)
 
 	serverResp, err := cli.post(ctx, "/build/cancel", query, nil, nil)
-	if err != nil {
+	ensureReaderClosed(serverResp)
-		return err
+	return err
-	}
-	defer ensureReaderClosed(serverResp)
-
-	return nil
 }

vendor/github.com/docker/docker/client/build_prune.go

@@ -31,11 +31,11 @@ func (cli *Client) BuildCachePrune(ctx context.Context, opts types.BuildCachePru
 	query.Set("filters", filters)
 
 	serverResp, err := cli.post(ctx, "/build/prune", query, nil, nil)
+	defer ensureReaderClosed(serverResp)
 
 	if err != nil {
 		return nil, err
 	}
-	defer ensureReaderClosed(serverResp)
 
 	if err := json.NewDecoder(serverResp.body).Decode(&report); err != nil {
 		return nil, fmt.Errorf("Error retrieving disk usage: %v", err)

vendor/github.com/docker/docker/client/checkpoint_list.go

@@ -18,11 +18,11 @@ func (cli *Client) CheckpointList(ctx context.Context, container string, options
 	}
 
 	resp, err := cli.get(ctx, "/containers/"+container+"/checkpoints", query, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return checkpoints, wrapResponseError(err, resp, "container", container)
 	}
 
 	err = json.NewDecoder(resp.body).Decode(&checkpoints)
-	ensureReaderClosed(resp)
 	return checkpoints, err
 }

vendor/github.com/docker/docker/client/client.go

@@ -23,7 +23,7 @@ For example, to list running containers (the equivalent of "docker ps"):
 	)
 
 	func main() {
-		cli, err := client.NewEnvClient()
+		cli, err := client.NewClientWithOpts(client.FromEnv)
 		if err != nil {
 			panic(err)
 		}
@@ -47,16 +47,13 @@ import (
 	"net"
 	"net/http"
 	"net/url"
-	"os"
 	"path"
-	"path/filepath"
 	"strings"
 
 	"github.com/docker/docker/api"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/versions"
 	"github.com/docker/go-connections/sockets"
-	"github.com/docker/go-connections/tlsconfig"
 	"github.com/pkg/errors"
 )
 
@@ -84,13 +81,22 @@ type Client struct {
 	customHTTPHeaders map[string]string
 	// manualOverride is set to true when the version was set by users.
 	manualOverride bool
+
+	// negotiateVersion indicates if the client should automatically negotiate
+	// the API version to use when making requests. API version negotiation is
+	// performed on the first request, after which negotiated is set to "true"
+	// so that subsequent requests do not re-negotiate.
+	negotiateVersion bool
+
+	// negotiated indicates that API version negotiation took place
+	negotiated bool
 }
 
 // CheckRedirect specifies the policy for dealing with redirect responses:
 // If the request is non-GET return `ErrRedirect`. Otherwise use the last response.
 //
 // Go 1.8 changes behavior for HTTP redirects (specifically 301, 307, and 308) in the client .
-// The Docker client (and by extension docker API client) can be made to to send a request
+// The Docker client (and by extension docker API client) can be made to send a request
 // like POST /containers//start where what would normally be in the name section of the URL is empty.
 // This triggers an HTTP 301 from the daemon.
 // In go 1.8 this 301 will be converted to a GET request, and ends up getting a 404 from the daemon.
@@ -103,137 +109,6 @@ func CheckRedirect(req *http.Request, via []*http.Request) error {
 	return ErrRedirect
 }
 
-// NewEnvClient initializes a new API client based on environment variables.
-// See FromEnv for a list of support environment variables.
-//
-// Deprecated: use NewClientWithOpts(FromEnv)
-func NewEnvClient() (*Client, error) {
-	return NewClientWithOpts(FromEnv)
-}
-
-// FromEnv configures the client with values from environment variables.
-//
-// Supported environment variables:
-// DOCKER_HOST to set the url to the docker server.
-// DOCKER_API_VERSION to set the version of the API to reach, leave empty for latest.
-// DOCKER_CERT_PATH to load the TLS certificates from.
-// DOCKER_TLS_VERIFY to enable or disable TLS verification, off by default.
-func FromEnv(c *Client) error {
-	if dockerCertPath := os.Getenv("DOCKER_CERT_PATH"); dockerCertPath != "" {
-		options := tlsconfig.Options{
-			CAFile:             filepath.Join(dockerCertPath, "ca.pem"),
-			CertFile:           filepath.Join(dockerCertPath, "cert.pem"),
-			KeyFile:            filepath.Join(dockerCertPath, "key.pem"),
-			InsecureSkipVerify: os.Getenv("DOCKER_TLS_VERIFY") == "",
-		}
-		tlsc, err := tlsconfig.Client(options)
-		if err != nil {
-			return err
-		}
-
-		c.client = &http.Client{
-			Transport:     &http.Transport{TLSClientConfig: tlsc},
-			CheckRedirect: CheckRedirect,
-		}
-	}
-
-	if host := os.Getenv("DOCKER_HOST"); host != "" {
-		if err := WithHost(host)(c); err != nil {
-			return err
-		}
-	}
-
-	if version := os.Getenv("DOCKER_API_VERSION"); version != "" {
-		c.version = version
-		c.manualOverride = true
-	}
-	return nil
-}
-
-// WithTLSClientConfig applies a tls config to the client transport.
-func WithTLSClientConfig(cacertPath, certPath, keyPath string) func(*Client) error {
-	return func(c *Client) error {
-		opts := tlsconfig.Options{
-			CAFile:             cacertPath,
-			CertFile:           certPath,
-			KeyFile:            keyPath,
-			ExclusiveRootPools: true,
-		}
-		config, err := tlsconfig.Client(opts)
-		if err != nil {
-			return errors.Wrap(err, "failed to create tls config")
-		}
-		if transport, ok := c.client.Transport.(*http.Transport); ok {
-			transport.TLSClientConfig = config
-			return nil
-		}
-		return errors.Errorf("cannot apply tls config to transport: %T", c.client.Transport)
-	}
-}
-
-// WithDialer applies the dialer.DialContext to the client transport. This can be
-// used to set the Timeout and KeepAlive settings of the client.
-// Deprecated: use WithDialContext
-func WithDialer(dialer *net.Dialer) func(*Client) error {
-	return WithDialContext(dialer.DialContext)
-}
-
-// WithDialContext applies the dialer to the client transport. This can be
-// used to set the Timeout and KeepAlive settings of the client.
-func WithDialContext(dialContext func(ctx context.Context, network, addr string) (net.Conn, error)) func(*Client) error {
-	return func(c *Client) error {
-		if transport, ok := c.client.Transport.(*http.Transport); ok {
-			transport.DialContext = dialContext
-			return nil
-		}
-		return errors.Errorf("cannot apply dialer to transport: %T", c.client.Transport)
-	}
-}
-
-// WithVersion overrides the client version with the specified one
-func WithVersion(version string) func(*Client) error {
-	return func(c *Client) error {
-		c.version = version
-		return nil
-	}
-}
-
-// WithHost overrides the client host with the specified one.
-func WithHost(host string) func(*Client) error {
-	return func(c *Client) error {
-		hostURL, err := ParseHostURL(host)
-		if err != nil {
-			return err
-		}
-		c.host = host
-		c.proto = hostURL.Scheme
-		c.addr = hostURL.Host
-		c.basePath = hostURL.Path
-		if transport, ok := c.client.Transport.(*http.Transport); ok {
-			return sockets.ConfigureTransport(transport, c.proto, c.addr)
-		}
-		return errors.Errorf("cannot apply host to transport: %T", c.client.Transport)
-	}
-}
-
-// WithHTTPClient overrides the client http client with the specified one
-func WithHTTPClient(client *http.Client) func(*Client) error {
-	return func(c *Client) error {
-		if client != nil {
-			c.client = client
-		}
-		return nil
-	}
-}
-
-// WithHTTPHeaders overrides the client default http headers
-func WithHTTPHeaders(headers map[string]string) func(*Client) error {
-	return func(c *Client) error {
-		c.customHTTPHeaders = headers
-		return nil
-	}
-}
-
 // NewClientWithOpts initializes a new API client with default values. It takes functors
 // to modify values when creating it, like `NewClientWithOpts(WithVersion(…))`
 // It also initializes the custom http headers to add to each request.
@@ -241,7 +116,7 @@ func WithHTTPHeaders(headers map[string]string) func(*Client) error {
 // It won't send any version information if the version number is empty. It is
 // highly recommended that you set a version or your client may break if the
 // server is upgraded.
-func NewClientWithOpts(ops ...func(*Client) error) (*Client, error) {
+func NewClientWithOpts(ops ...Opt) (*Client, error) {
 	client, err := defaultHTTPClient(DefaultDockerHost)
 	if err != nil {
 		return nil, err
@@ -249,7 +124,6 @@ func NewClientWithOpts(ops ...func(*Client) error) (*Client, error) {
 	c := &Client{
 		host:    DefaultDockerHost,
 		version: api.DefaultVersion,
-		scheme:  "http",
 		client:  client,
 		proto:   defaultProto,
 		addr:    defaultAddr,
@@ -264,14 +138,18 @@ func NewClientWithOpts(ops ...func(*Client) error) (*Client, error) {
 	if _, ok := c.client.Transport.(http.RoundTripper); !ok {
 		return nil, fmt.Errorf("unable to verify TLS configuration, invalid transport %v", c.client.Transport)
 	}
-	tlsConfig := resolveTLSConfig(c.client.Transport)
+	if c.scheme == "" {
-	if tlsConfig != nil {
+		c.scheme = "http"
-		// TODO(stevvooe): This isn't really the right way to write clients in Go.
+
-		// `NewClient` should probably only take an `*http.Client` and work from there.
+		tlsConfig := resolveTLSConfig(c.client.Transport)
-		// Unfortunately, the model of having a host-ish/url-thingy as the connection
+		if tlsConfig != nil {
-		// string has us confusing protocol and transport layers. We continue doing
+			// TODO(stevvooe): This isn't really the right way to write clients in Go.
-		// this to avoid breaking existing clients but this should be addressed.
+			// `NewClient` should probably only take an `*http.Client` and work from there.
-		c.scheme = "https"
+			// Unfortunately, the model of having a host-ish/url-thingy as the connection
+			// string has us confusing protocol and transport layers. We continue doing
+			// this to avoid breaking existing clients but this should be addressed.
+			c.scheme = "https"
+		}
 	}
 
 	return c, nil
@@ -290,18 +168,6 @@ func defaultHTTPClient(host string) (*http.Client, error) {
 	}, nil
 }
 
-// NewClient initializes a new API client for the given host and API version.
-// It uses the given http client as transport.
-// It also initializes the custom http headers to add to each request.
-//
-// It won't send any version information if the version number is empty. It is
-// highly recommended that you set a version or your client may break if the
-// server is upgraded.
-// Deprecated: use NewClientWithOpts
-func NewClient(host string, version string, client *http.Client, httpHeaders map[string]string) (*Client, error) {
-	return NewClientWithOpts(WithHost(host), WithVersion(version), WithHTTPClient(client), WithHTTPHeaders(httpHeaders))
-}
-
 // Close the transport used by the client
 func (cli *Client) Close() error {
 	if t, ok := cli.client.Transport.(*http.Transport); ok {
@@ -312,8 +178,11 @@ func (cli *Client) Close() error {
 
 // getAPIPath returns the versioned request path to call the api.
 // It appends the query parameters to the path if they are not empty.
-func (cli *Client) getAPIPath(p string, query url.Values) string {
+func (cli *Client) getAPIPath(ctx context.Context, p string, query url.Values) string {
 	var apiPath string
+	if cli.negotiateVersion && !cli.negotiated {
+		cli.NegotiateAPIVersion(ctx)
+	}
 	if cli.version != "" {
 		v := strings.TrimPrefix(cli.version, "v")
 		apiPath = path.Join(cli.basePath, "/v"+v, p)
@@ -329,19 +198,31 @@ func (cli *Client) ClientVersion() string {
 }
 
 // NegotiateAPIVersion queries the API and updates the version to match the
-// API version. Any errors are silently ignored.
+// API version. Any errors are silently ignored. If a manual override is in place,
+// either through the `DOCKER_API_VERSION` environment variable, or if the client
+// was initialized with a fixed version (`opts.WithVersion(xx)`), no negotiation
+// will be performed.
 func (cli *Client) NegotiateAPIVersion(ctx context.Context) {
-	ping, _ := cli.Ping(ctx)
+	if !cli.manualOverride {
-	cli.NegotiateAPIVersionPing(ping)
+		ping, _ := cli.Ping(ctx)
+		cli.negotiateAPIVersionPing(ping)
+	}
 }
 
 // NegotiateAPIVersionPing updates the client version to match the Ping.APIVersion
-// if the ping version is less than the default version.
+// if the ping version is less than the default version.  If a manual override is
+// in place, either through the `DOCKER_API_VERSION` environment variable, or if
+// the client was initialized with a fixed version (`opts.WithVersion(xx)`), no
+// negotiation is performed.
 func (cli *Client) NegotiateAPIVersionPing(p types.Ping) {
-	if cli.manualOverride {
+	if !cli.manualOverride {
-		return
+		cli.negotiateAPIVersionPing(p)
 	}
+}
 
+// negotiateAPIVersionPing queries the API and updates the version to match the
+// API version. Any errors are silently ignored.
+func (cli *Client) negotiateAPIVersionPing(p types.Ping) {
 	// try the latest version before versioning headers existed
 	if p.APIVersion == "" {
 		p.APIVersion = "1.24"
@@ -356,6 +237,12 @@ func (cli *Client) NegotiateAPIVersionPing(p types.Ping) {
 	if versions.LessThan(p.APIVersion, cli.version) {
 		cli.version = p.APIVersion
 	}
+
+	// Store the results, so that automatic API version negotiation (if enabled)
+	// won't be performed on the next request.
+	if cli.negotiateVersion {
+		cli.negotiated = true
+	}
 }
 
 // DaemonHost returns the host address used by the client

vendor/github.com/docker/docker/client/client_deprecated.go

@@ -0,0 +1,23 @@
+package client
+
+import "net/http"
+
+// NewClient initializes a new API client for the given host and API version.
+// It uses the given http client as transport.
+// It also initializes the custom http headers to add to each request.
+//
+// It won't send any version information if the version number is empty. It is
+// highly recommended that you set a version or your client may break if the
+// server is upgraded.
+// Deprecated: use NewClientWithOpts
+func NewClient(host string, version string, client *http.Client, httpHeaders map[string]string) (*Client, error) {
+	return NewClientWithOpts(WithHost(host), WithVersion(version), WithHTTPClient(client), WithHTTPHeaders(httpHeaders))
+}
+
+// NewEnvClient initializes a new API client based on environment variables.
+// See FromEnv for a list of support environment variables.
+//
+// Deprecated: use NewClientWithOpts(FromEnv)
+func NewEnvClient() (*Client, error) {
+	return NewClientWithOpts(FromEnv)
+}

vendor/github.com/docker/docker/client/config_create.go

@@ -15,11 +15,11 @@ func (cli *Client) ConfigCreate(ctx context.Context, config swarm.ConfigSpec) (t
 		return response, err
 	}
 	resp, err := cli.post(ctx, "/configs/create", nil, config, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return response, err
 	}
 
 	err = json.NewDecoder(resp.body).Decode(&response)
-	ensureReaderClosed(resp)
 	return response, err
 }

vendor/github.com/docker/docker/client/config_inspect.go

@@ -18,10 +18,10 @@ func (cli *Client) ConfigInspectWithRaw(ctx context.Context, id string) (swarm.C
 		return swarm.Config{}, nil, err
 	}
 	resp, err := cli.get(ctx, "/configs/"+id, nil, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return swarm.Config{}, nil, wrapResponseError(err, resp, "config", id)
 	}
-	defer ensureReaderClosed(resp)
 
 	body, err := ioutil.ReadAll(resp.body)
 	if err != nil {

vendor/github.com/docker/docker/client/config_list.go

@@ -27,12 +27,12 @@ func (cli *Client) ConfigList(ctx context.Context, options types.ConfigListOptio
 	}
 
 	resp, err := cli.get(ctx, "/configs", query, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return nil, err
 	}
 
 	var configs []swarm.Config
 	err = json.NewDecoder(resp.body).Decode(&configs)
-	ensureReaderClosed(resp)
 	return configs, err
 }

vendor/github.com/docker/docker/client/config_remove.go

@@ -8,6 +8,6 @@ func (cli *Client) ConfigRemove(ctx context.Context, id string) error {
 		return err
 	}
 	resp, err := cli.delete(ctx, "/configs/"+id, nil, nil)
-	ensureReaderClosed(resp)
+	defer ensureReaderClosed(resp)
 	return wrapResponseError(err, resp, "config", id)
 }

vendor/github.com/docker/docker/client/container_commit.go

@@ -45,11 +45,11 @@ func (cli *Client) ContainerCommit(ctx context.Context, container string, option
 
 	var response types.IDResponse
 	resp, err := cli.post(ctx, "/commit", query, options.Config, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return response, err
 	}
 
 	err = json.NewDecoder(resp.body).Decode(&response)
-	ensureReaderClosed(resp)
 	return response, err
 }

vendor/github.com/docker/docker/client/container_copy.go

@@ -21,10 +21,10 @@ func (cli *Client) ContainerStatPath(ctx context.Context, containerID, path stri
 
 	urlStr := "/containers/" + containerID + "/archive"
 	response, err := cli.head(ctx, urlStr, query, nil)
+	defer ensureReaderClosed(response)
 	if err != nil {
 		return types.ContainerPathStat{}, wrapResponseError(err, response, "container:path", containerID+":"+path)
 	}
-	defer ensureReaderClosed(response)
 	return getContainerPathStatFromHeader(response.header)
 }
 
@@ -45,11 +45,12 @@ func (cli *Client) CopyToContainer(ctx context.Context, containerID, dstPath str
 	apiPath := "/containers/" + containerID + "/archive"
 
 	response, err := cli.putRaw(ctx, apiPath, query, content, nil)
+	defer ensureReaderClosed(response)
 	if err != nil {
 		return wrapResponseError(err, response, "container:path", containerID+":"+dstPath)
 	}
-	defer ensureReaderClosed(response)
 
+	// TODO this code converts non-error status-codes (e.g., "204 No Content") into an error; verify if this is the desired behavior
 	if response.statusCode != http.StatusOK {
 		return fmt.Errorf("unexpected status code from daemon: %d", response.statusCode)
 	}
@@ -69,6 +70,7 @@ func (cli *Client) CopyFromContainer(ctx context.Context, containerID, srcPath s
 		return nil, types.ContainerPathStat{}, wrapResponseError(err, response, "container:path", containerID+":"+srcPath)
 	}
 
+	// TODO this code converts non-error status-codes (e.g., "204 No Content") into an error; verify if this is the desired behavior
 	if response.statusCode != http.StatusOK {
 		return nil, types.ContainerPathStat{}, fmt.Errorf("unexpected status code from daemon: %d", response.statusCode)
 	}

vendor/github.com/docker/docker/client/container_create.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"net/url"
-	"strings"
 
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/network"
@@ -43,14 +42,11 @@ func (cli *Client) ContainerCreate(ctx context.Context, config *container.Config
 	}
 
 	serverResp, err := cli.post(ctx, "/containers/create", query, body, nil)
+	defer ensureReaderClosed(serverResp)
 	if err != nil {
-		if serverResp.statusCode == 404 && strings.Contains(err.Error(), "No such image") {
-			return response, objectNotFoundError{object: "image", id: config.Image}
-		}
 		return response, err
 	}
 
 	err = json.NewDecoder(serverResp.body).Decode(&response)
-	ensureReaderClosed(serverResp)
 	return response, err
 }

vendor/github.com/docker/docker/client/container_diff.go

@@ -13,11 +13,11 @@ func (cli *Client) ContainerDiff(ctx context.Context, containerID string) ([]con
 	var changes []container.ContainerChangeResponseItem
 
 	serverResp, err := cli.get(ctx, "/containers/"+containerID+"/changes", url.Values{}, nil)
+	defer ensureReaderClosed(serverResp)
 	if err != nil {
 		return changes, err
 	}
 
 	err = json.NewDecoder(serverResp.body).Decode(&changes)
-	ensureReaderClosed(serverResp)
 	return changes, err
 }

vendor/github.com/docker/docker/client/container_exec.go

@@ -16,11 +16,11 @@ func (cli *Client) ContainerExecCreate(ctx context.Context, container string, co
 	}
 
 	resp, err := cli.post(ctx, "/containers/"+container+"/exec", nil, config, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return response, err
 	}
 	err = json.NewDecoder(resp.body).Decode(&response)
-	ensureReaderClosed(resp)
 	return response, err
 }
 

vendor/github.com/docker/docker/client/container_inspect.go

@@ -16,13 +16,13 @@ func (cli *Client) ContainerInspect(ctx context.Context, containerID string) (ty
 		return types.ContainerJSON{}, objectNotFoundError{object: "container", id: containerID}
 	}
 	serverResp, err := cli.get(ctx, "/containers/"+containerID+"/json", nil, nil)
+	defer ensureReaderClosed(serverResp)
 	if err != nil {
 		return types.ContainerJSON{}, wrapResponseError(err, serverResp, "container", containerID)
 	}
 
 	var response types.ContainerJSON
 	err = json.NewDecoder(serverResp.body).Decode(&response)
-	ensureReaderClosed(serverResp)
 	return response, err
 }
 
@@ -36,10 +36,10 @@ func (cli *Client) ContainerInspectWithRaw(ctx context.Context, containerID stri
 		query.Set("size", "1")
 	}
 	serverResp, err := cli.get(ctx, "/containers/"+containerID+"/json", query, nil)
+	defer ensureReaderClosed(serverResp)
 	if err != nil {
 		return types.ContainerJSON{}, nil, wrapResponseError(err, serverResp, "container", containerID)
 	}
-	defer ensureReaderClosed(serverResp)
 
 	body, err := ioutil.ReadAll(serverResp.body)
 	if err != nil {

vendor/github.com/docker/docker/client/container_list.go

@@ -45,12 +45,12 @@ func (cli *Client) ContainerList(ctx context.Context, options types.ContainerLis
 	}
 
 	resp, err := cli.get(ctx, "/containers/json", query, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return nil, err
 	}
 
 	var containers []types.Container
 	err = json.NewDecoder(resp.body).Decode(&containers)
-	ensureReaderClosed(resp)
 	return containers, err
 }

vendor/github.com/docker/docker/client/container_prune.go

@@ -23,10 +23,10 @@ func (cli *Client) ContainersPrune(ctx context.Context, pruneFilters filters.Arg
 	}
 
 	serverResp, err := cli.post(ctx, "/containers/prune", query, nil, nil)
+	defer ensureReaderClosed(serverResp)
 	if err != nil {
 		return report, err
 	}
-	defer ensureReaderClosed(serverResp)
 
 	if err := json.NewDecoder(serverResp.body).Decode(&report); err != nil {
 		return report, fmt.Errorf("Error retrieving disk usage: %v", err)

vendor/github.com/docker/docker/client/container_remove.go

@@ -22,6 +22,6 @@ func (cli *Client) ContainerRemove(ctx context.Context, containerID string, opti
 	}
 
 	resp, err := cli.delete(ctx, "/containers/"+containerID, query, nil)
-	ensureReaderClosed(resp)
+	defer ensureReaderClosed(resp)
 	return wrapResponseError(err, resp, "container", containerID)
 }

vendor/github.com/docker/docker/client/container_top.go

@@ -18,11 +18,11 @@ func (cli *Client) ContainerTop(ctx context.Context, containerID string, argumen
 	}
 
 	resp, err := cli.get(ctx, "/containers/"+containerID+"/top", query, nil)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return response, err
 	}
 
 	err = json.NewDecoder(resp.body).Decode(&response)
-	ensureReaderClosed(resp)
 	return response, err
 }

vendor/github.com/docker/docker/client/container_update.go

@@ -11,12 +11,11 @@ import (
 func (cli *Client) ContainerUpdate(ctx context.Context, containerID string, updateConfig container.UpdateConfig) (container.ContainerUpdateOKBody, error) {
 	var response container.ContainerUpdateOKBody
 	serverResp, err := cli.post(ctx, "/containers/"+containerID+"/update", nil, updateConfig, nil)
+	defer ensureReaderClosed(serverResp)
 	if err != nil {
 		return response, err
 	}
 
 	err = json.NewDecoder(serverResp.body).Decode(&response)
-
-	ensureReaderClosed(serverResp)
 	return response, err
 }

vendor/github.com/docker/docker/client/disk_usage.go

@@ -13,10 +13,10 @@ func (cli *Client) DiskUsage(ctx context.Context) (types.DiskUsage, error) {
 	var du types.DiskUsage
 
 	serverResp, err := cli.get(ctx, "/system/df", nil, nil)
+	defer ensureReaderClosed(serverResp)
 	if err != nil {
 		return du, err
 	}
-	defer ensureReaderClosed(serverResp)
 
 	if err := json.NewDecoder(serverResp.body).Decode(&du); err != nil {
 		return du, fmt.Errorf("Error retrieving disk usage: %v", err)

vendor/github.com/docker/docker/client/distribution_inspect.go

@@ -28,11 +28,11 @@ func (cli *Client) DistributionInspect(ctx context.Context, image, encodedRegist
 	}
 
 	resp, err := cli.get(ctx, "/distribution/"+image+"/json", url.Values{}, headers)
+	defer ensureReaderClosed(resp)
 	if err != nil {
 		return distributionInspect, err
 	}
 
 	err = json.NewDecoder(resp.body).Decode(&distributionInspect)
-	ensureReaderClosed(resp)
 	return distributionInspect, err
 }

vendor/github.com/docker/docker/client/errors.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 
 	"github.com/docker/docker/api/types/versions"
+	"github.com/docker/docker/errdefs"
 	"github.com/pkg/errors"
 )
 
@@ -32,16 +33,19 @@ func ErrorConnectionFailed(host string) error {
 	return errConnectionFailed{host: host}
 }
 
+// Deprecated: use the errdefs.NotFound() interface instead. Kept for backward compatibility
 type notFound interface {
 	error
-	NotFound() bool // Is the error a NotFound error
+	NotFound() bool
 }
 
 // IsErrNotFound returns true if the error is a NotFound error, which is returned
 // by the API when some object is not found.
 func IsErrNotFound(err error) bool {
-	te, ok := err.(notFound)
+	if _, ok := err.(notFound); ok {
-	return ok && te.NotFound()
+		return ok
+	}
+	return errdefs.IsNotFound(err)
 }
 
 type objectNotFoundError struct {
@@ -49,9 +53,7 @@ type objectNotFoundError struct {
 	id     string
 }
 
-func (e objectNotFoundError) NotFound() bool {
+func (e objectNotFoundError) NotFound() {}
-	return true
-}
 
 func (e objectNotFoundError) Error() string {
 	return fmt.Sprintf("Error: No such %s: %s", e.object, e.id)
@@ -64,7 +66,7 @@ func wrapResponseError(err error, resp serverResponse, object, id string) error
 	case resp.statusCode == http.StatusNotFound:
 		return objectNotFoundError{object: object, id: id}
 	case resp.statusCode == http.StatusNotImplemented:
-		return notImplementedError{message: err.Error()}
+		return errdefs.NotImplemented(err)
 	default:
 		return err
 	}
@@ -83,8 +85,10 @@ func (u unauthorizedError) Error() string {
 // IsErrUnauthorized returns true if the error is caused
 // when a remote registry authentication fails
 func IsErrUnauthorized(err error) bool {
-	_, ok := err.(unauthorizedError)
+	if _, ok := err.(unauthorizedError); ok {
-	return ok
+		return ok
+	}
+	return errdefs.IsUnauthorized(err)
 }
 
 type pluginPermissionDenied struct {
@@ -118,8 +122,10 @@ func (e notImplementedError) NotImplemented() bool {
 // This is returned by the API when a requested feature has not been
 // implemented.
 func IsErrNotImplemented(err error) bool {
-	te, ok := err.(notImplementedError)
+	if _, ok := err.(notImplementedError); ok {
-	return ok && te.NotImplemented()
+		return ok
+	}
+	return errdefs.IsNotImplemented(err)
 }
 
 // NewVersionError returns an error if the APIVersion required

vendor/github.com/docker/docker/client/hijack.go

@@ -23,7 +23,7 @@ func (cli *Client) postHijacked(ctx context.Context, path string, query url.Valu
 		return types.HijackedResponse{}, err
 	}
 
-	apiPath := cli.getAPIPath(path, query)
+	apiPath := cli.getAPIPath(ctx, path, query)
 	req, err := http.NewRequest("POST", apiPath, bodyEncoded)
 	if err != nil {
 		return types.HijackedResponse{}, err
@@ -38,6 +38,17 @@ func (cli *Client) postHijacked(ctx context.Context, path string, query url.Valu
 	return types.HijackedResponse{Conn: conn, Reader: bufio.NewReader(conn)}, err
 }
 
+// DialHijack returns a hijacked connection with negotiated protocol proto.
+func (cli *Client) DialHijack(ctx context.Context, url, proto string, meta map[string][]string) (net.Conn, error) {
+	req, err := http.NewRequest("POST", url, nil)
+	if err != nil {
+		return nil, err
+	}
+	req = cli.addHeaders(req, meta)
+
+	return cli.setupHijackConn(ctx, req, proto)
+}
+
 // fallbackDial is used when WithDialer() was not called.
 // See cli.Dialer().
 func fallbackDial(proto, addr string, tlsConfig *tls.Config) (net.Conn, error) {