Messages in this thread Patch in this message | | | From | "Lee, Chun-Yi" <> | Subject | [PATCH 1/2 v2] efi: add a function to convert the status value to string | Date | Thu, 2 May 2019 12:04:39 +0800 |
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This function can be used to convert EFI status value to string for printing out debug message. Using this function can improve the readability of log.
v2. - Changed the wording in subject and description. - Moved the marco immediately after the status value definitions. - Turned into a proper function instead of inline.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Kees Cook <keescook@chromium.org> Cc: Anton Vorontsov <anton@enomsg.org> Cc: Colin Cross <ccross@android.com> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: "Lee, Chun-Yi" <jlee@suse.com> --- include/linux/efi.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+)
diff --git a/include/linux/efi.h b/include/linux/efi.h index 54357a258b35..6f3f89a32eef 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -42,6 +42,34 @@ #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1))) #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) +#define EFI_STATUS_STR(_status) \ +case EFI_##_status: \ + return "EFI_" __stringify(_status); + +static __attribute__((unused)) char * +efi_status_to_str(unsigned long status) +{ + switch (status) { + EFI_STATUS_STR(SUCCESS) + EFI_STATUS_STR(LOAD_ERROR) + EFI_STATUS_STR(INVALID_PARAMETER) + EFI_STATUS_STR(UNSUPPORTED) + EFI_STATUS_STR(BAD_BUFFER_SIZE) + EFI_STATUS_STR(BUFFER_TOO_SMALL) + EFI_STATUS_STR(NOT_READY) + EFI_STATUS_STR(DEVICE_ERROR) + EFI_STATUS_STR(WRITE_PROTECTED) + EFI_STATUS_STR(OUT_OF_RESOURCES) + EFI_STATUS_STR(NOT_FOUND) + EFI_STATUS_STR(ABORTED) + EFI_STATUS_STR(SECURITY_VIOLATION) + default: + pr_warn("Unknown efi status: 0x%lx", status); + } + + return "Unknown efi status"; +} + typedef unsigned long efi_status_t; typedef u8 efi_bool_t; typedef u16 efi_char16_t; /* UNICODE character */ -- 2.16.4
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