From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Lee, Chun-Yi" Subject: [PATCH 1/2] efi: add a function for transferring status to string Date: Fri, 22 Mar 2019 18:33:49 +0800 Message-ID: <20190322103350.27764-1-jlee@suse.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Ard Biesheuvel , James Morris , "Serge E . Hallyn" , David Howells , Josh Boyer , Nayna Jain , Mimi Zohar Cc: linux-efi@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, "Lee, Chun-Yi" , Kees Cook , Anton Vorontsov , Colin Cross , Tony Luck List-Id: linux-efi@vger.kernel.org This function can be used to transfer EFI status code to string for printing out debug message. Using this function can improve the readability of log. Cc: Ard Biesheuvel Cc: Kees Cook Cc: Anton Vorontsov Cc: Colin Cross Cc: Tony Luck Signed-off-by: "Lee, Chun-Yi" --- include/linux/efi.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/include/linux/efi.h b/include/linux/efi.h index 54357a258b35..a43cb0dc37af 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1768,4 +1768,32 @@ struct linux_efi_memreserve { #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \ / sizeof(((struct linux_efi_memreserve *)0)->entry[0])) +#define EFI_STATUS_STR(_status) \ +case EFI_##_status: \ + return "EFI_" __stringify(_status); + +static inline char * +efi_status_to_str(efi_status_t 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"; +} + #endif /* _LINUX_EFI_H */ -- 2.16.4