xt-sys/exectos
xt-sys/exectos
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Return a copy of config value, so that it won't get altered
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This commit is contained in:
Rafal Kupiec 2024-01-09 16:24:57 +01:00
parent a674d2eb1b
commit cb4bd3db8b
Signed by: belliash
GPG Key ID: 4E829243E0CFE6B4
1 changed files with 21 additions and 5 deletions
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26
xtldr/config.c
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@ -25,10 +25,12 @@ BlGetConfigValue(IN CONST PWCHAR ConfigName)
{ {
PXTBL_CONFIG_ENTRY ConfigEntry; PXTBL_CONFIG_ENTRY ConfigEntry;
PLIST_ENTRY ConfigListEntry; PLIST_ENTRY ConfigListEntry;
SIZE_T Length; SIZE_T KeyLength, ValueLength;
EFI_STATUS Status;
PWCHAR Value;
/* Get config entry name length */ /* Get config entry name length */
Length = RtlWideStringLength(ConfigName, 0); KeyLength = RtlWideStringLength(ConfigName, 0);
/* Iterate through config entries */ /* Iterate through config entries */
ConfigListEntry = BlpConfig.Flink; ConfigListEntry = BlpConfig.Flink;
@ -38,10 +40,24 @@ BlGetConfigValue(IN CONST PWCHAR ConfigName)
ConfigEntry = CONTAIN_RECORD(ConfigListEntry, XTBL_CONFIG_ENTRY, Flink); ConfigEntry = CONTAIN_RECORD(ConfigListEntry, XTBL_CONFIG_ENTRY, Flink);
/* Check if requested configuration found */ /* Check if requested configuration found */
if(RtlCompareWideStringInsensitive(ConfigEntry->Name, ConfigName, Length) == 0) if(RtlCompareWideStringInsensitive(ConfigEntry->Name, ConfigName, KeyLength) == 0)
{ {
/* Return config value */ /* Get value length */
return ConfigEntry->Value; ValueLength = RtlWideStringLength(ConfigEntry->Value, 0);
/* Allocate memory for value */
Status = BlMemoryAllocatePool(ValueLength * sizeof(WCHAR), (PVOID *)&Value);
if(Status != STATUS_EFI_SUCCESS)
{
/* Memory allocation failure, return NULL */
BlDebugPrint(L"ERROR: Memory allocation failure (Status Code: 0x%lx)\n", Status);
return NULL;
}
/* Copy value and return it */
RtlCopyMemory(Value, ConfigEntry->Value, ValueLength * sizeof(WCHAR));
Value[ValueLength] = 0;
return Value;
} }
/* Move to the next config entry */ /* Move to the next config entry */