Implement efi_devpath_length
Return the total length, in bytes, of the device path (including the terminating node at the end). Sponsored by: Netflix
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c6c2a73c0c
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=336654
@ -90,6 +90,7 @@ bool efi_devpath_is_prefix(EFI_DEVICE_PATH *, EFI_DEVICE_PATH *);
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CHAR16 *efi_devpath_name(EFI_DEVICE_PATH *);
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void efi_free_devpath_name(CHAR16 *);
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EFI_DEVICE_PATH *efi_devpath_to_media_path(EFI_DEVICE_PATH *);
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UINTN efi_devpath_length(EFI_DEVICE_PATH *);
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int efi_status_to_errno(EFI_STATUS);
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EFI_STATUS errno_to_efi_status(int errno);
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@ -219,3 +219,13 @@ efi_devpath_to_media_path(EFI_DEVICE_PATH *path)
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}
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return (NULL);
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}
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UINTN
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efi_devpath_length(EFI_DEVICE_PATH *path)
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{
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EFI_DEVICE_PATH *start = path;
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while (!IsDevicePathEnd(path))
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path = NextDevicePathNode(path);
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return ((UINTN)path - (UINTN)start) + DevicePathNodeLength(path);
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}
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