diff options
Diffstat (limited to 'tools/lib/string.c')
| -rw-r--r-- | tools/lib/string.c | 42 |
1 files changed, 26 insertions, 16 deletions
diff --git a/tools/lib/string.c b/tools/lib/string.c index 8e678af1c6ee..93b3d4b6feac 100644 --- a/tools/lib/string.c +++ b/tools/lib/string.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * linux/tools/lib/string.c * @@ -39,27 +40,45 @@ void *memdup(const void *src, size_t len) * @s: input string * @res: result * - * This routine returns 0 iff the first character is one of 'Yy1Nn0'. - * Otherwise it will return -EINVAL. Value pointed to by res is - * updated upon finding a match. + * This routine returns 0 iff the first character is one of 'Yy1Nn0', or + * [oO][NnFf] for "on" and "off". Otherwise it will return -EINVAL. Value + * pointed to by res is updated upon finding a match. */ int strtobool(const char *s, bool *res) { + if (!s) + return -EINVAL; + switch (s[0]) { case 'y': case 'Y': case '1': *res = true; - break; + return 0; case 'n': case 'N': case '0': *res = false; - break; + return 0; + case 'o': + case 'O': + switch (s[1]) { + case 'n': + case 'N': + *res = true; + return 0; + case 'f': + case 'F': + *res = false; + return 0; + default: + break; + } default: - return -EINVAL; + break; } - return 0; + + return -EINVAL; } /** @@ -87,12 +106,3 @@ size_t __weak strlcpy(char *dest, const char *src, size_t size) } return ret; } - -int prefixcmp(const char *str, const char *prefix) -{ - for (; ; str++, prefix++) - if (!*prefix) - return 0; - else if (*str != *prefix) - return (unsigned char)*prefix - (unsigned char)*str; -} |