diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/string.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/string.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/drivers/firmware/efi/libstub/string.c b/drivers/firmware/efi/libstub/string.c index 9f5810d86646..5a1519d435bf 100644 --- a/drivers/firmware/efi/libstub/string.c +++ b/drivers/firmware/efi/libstub/string.c @@ -11,7 +11,37 @@ #include <linux/types.h> #include <linux/string.h> -#ifndef __HAVE_ARCH_STRSTR +#ifndef EFI_HAVE_STRLEN +/** + * strlen - Find the length of a string + * @s: The string to be sized + */ +size_t strlen(const char *s) +{ + const char *sc; + + for (sc = s; *sc != '\0'; ++sc) + /* nothing */; + return sc - s; +} +#endif + +#ifndef EFI_HAVE_STRNLEN +/** + * strnlen - Find the length of a length-limited string + * @s: The string to be sized + * @count: The maximum number of bytes to search + */ +size_t strnlen(const char *s, size_t count) +{ + const char *sc; + + for (sc = s; count-- && *sc != '\0'; ++sc) + /* nothing */; + return sc - s; +} +#endif + /** * strstr - Find the first substring in a %NUL terminated string * @s1: The string to be searched @@ -33,7 +63,6 @@ char *strstr(const char *s1, const char *s2) } return NULL; } -#endif /** * strncmp - Compare two length-limited strings |