90 lines
1.4 KiB
C
90 lines
1.4 KiB
C
/*++
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Copyright (c) 2024, Quinn Stephens.
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Provided under the BSD 3-Clause license.
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Module Name:
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bootopt.c
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Abstract:
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Provides boot option utilities.
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--*/
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#include "bootlib.h"
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ULONG
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BlGetBootOptionSize (
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IN PBOOT_APPLICATION_OPTION Option
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)
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/*++
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Routine Description:
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Gets the size of a boot option.
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Arguments:
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Option - The boot option.
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Return Value:
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The size of the option.
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--*/
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{
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ULONG TotalSize;
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if (Option->DataOffset != 0) {
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TotalSize = Option->DataOffset + Option->DataSize;
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} else {
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TotalSize = sizeof(BOOT_APPLICATION_OPTION);
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}
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if (Option->OtherOptionsOffset != 0) {
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TotalSize += BlGetBootOptionListSize((PBOOT_APPLICATION_OPTION)((PUCHAR)Option + Option->OtherOptionsOffset));
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}
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return TotalSize;
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}
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ULONG
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BlGetBootOptionListSize (
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IN PBOOT_APPLICATION_OPTION Options
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)
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/*++
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Routine Description:
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Gets the total size of a list boot options.
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Arguments:
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Options - The boot option list.
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Return Value:
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The size of the option list.
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--*/
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{
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ULONG TotalSize, NextOffset;
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PBOOT_APPLICATION_OPTION Option;
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TotalSize = 0;
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NextOffset = 0;
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do {
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Option = (PBOOT_APPLICATION_OPTION)((PUCHAR)Options + NextOffset);
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NextOffset = Option->NextOptionOffset;
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TotalSize += BlGetBootOptionSize(Option);
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} while (NextOffset != 0);
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return TotalSize;
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}
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