diff options
Diffstat (limited to 'fs/efivarfs/vars.c')
| -rw-r--r-- | fs/efivarfs/vars.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/efivarfs/vars.c b/fs/efivarfs/vars.c index f7d43c847ee9..13594087d9ee 100644 --- a/fs/efivarfs/vars.c +++ b/fs/efivarfs/vars.c @@ -225,6 +225,31 @@ variable_matches(const char *var_name, size_t len, const char *match_name, } } +char * +efivar_get_utf8name(const efi_char16_t *name16, efi_guid_t *vendor) +{ + int len = ucs2_utf8size(name16); + char *name; + + /* name, plus '-', plus GUID, plus NUL*/ + name = kmalloc(len + 1 + EFI_VARIABLE_GUID_LEN + 1, GFP_KERNEL); + if (!name) + return NULL; + + ucs2_as_utf8(name, name16, len); + + name[len] = '-'; + + efi_guid_to_str(vendor, name + len + 1); + + name[len + EFI_VARIABLE_GUID_LEN+1] = '\0'; + + /* replace invalid slashes like kobject_set_name_vargs does for /sys/firmware/efi/vars. */ + strreplace(name, '/', '!'); + + return name; +} + bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, unsigned long data_size) |