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| author | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2023-11-13 15:50:16 +0100 |
|---|---|---|
| committer | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2023-11-20 19:06:22 +0100 |
| commit | ce68a254483817f86f92ffef7c7bc44fee318fb5 (patch) | |
| tree | 342c9d759d9e77fa6544c91110364661ff297420 /lib | |
| parent | 229f9e77fe46efb2516b7cfdc60db1d92721eac5 (diff) | |
| download | u-boot-ce68a254483817f86f92ffef7c7bc44fee318fb5.zip u-boot-ce68a254483817f86f92ffef7c7bc44fee318fb5.tar.gz u-boot-ce68a254483817f86f92ffef7c7bc44fee318fb5.tar.bz2 | |
efi_loader: improve efi_var_from_file() description
It is unclear to developers why efi_var_from_file() returns EFI_SUCCESS if
file ubootefi.var is missing or corrupted. Improve the description.
Reported-by: Weizhao Ouyang <o451686892@gmail.com>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Weizhao Ouyang <o451686892@gmail.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/efi_loader/efi_var_file.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/efi_loader/efi_var_file.c b/lib/efi_loader/efi_var_file.c index 62e071b..d7dba05 100644 --- a/lib/efi_loader/efi_var_file.c +++ b/lib/efi_loader/efi_var_file.c @@ -204,8 +204,11 @@ efi_status_t efi_var_restore(struct efi_var_file *buf, bool safe) * File ubootefi.var is read from the EFI system partitions and the variables * stored in the file are created. * - * In case the file does not exist yet or a variable cannot be set EFI_SUCCESS - * is returned. + * On first boot the file ubootefi.var does not exist yet. This is why we must + * return EFI_SUCCESS in this case. + * + * If the variable file is corrupted, e.g. incorrect CRC32, we do not want to + * stop the boot process. We deliberately return EFI_SUCCESS in this case, too. * * Return: status code */ |