diff options
Diffstat (limited to 'lib/string.c')
| -rw-r--r-- | lib/string.c | 49 |
1 files changed, 20 insertions, 29 deletions
diff --git a/lib/string.c b/lib/string.c index 0323c0d5629a..c7cf65ac42ad 100644 --- a/lib/string.c +++ b/lib/string.c @@ -630,35 +630,6 @@ bool sysfs_streq(const char *s1, const char *s2) } EXPORT_SYMBOL(sysfs_streq); -/** - * strtobool - convert common user inputs into boolean values - * @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. - */ -int strtobool(const char *s, bool *res) -{ - switch (s[0]) { - case 'y': - case 'Y': - case '1': - *res = true; - break; - case 'n': - case 'N': - case '0': - *res = false; - break; - default: - return -EINVAL; - } - return 0; -} -EXPORT_SYMBOL(strtobool); - #ifndef __HAVE_ARCH_MEMSET /** * memset - Fill a region of memory with the given value @@ -775,6 +746,26 @@ __visible int memcmp(const void *cs, const void *ct, size_t count) EXPORT_SYMBOL(memcmp); #endif +#ifndef __HAVE_ARCH_BCMP +/** + * bcmp - returns 0 if and only if the buffers have identical contents. + * @a: pointer to first buffer. + * @b: pointer to second buffer. + * @len: size of buffers. + * + * The sign or magnitude of a non-zero return value has no particular + * meaning, and architectures may implement their own more efficient bcmp(). So + * while this particular implementation is a simple (tail) call to memcmp, do + * not rely on anything but whether the return value is zero or non-zero. + */ +#undef bcmp +int bcmp(const void *a, const void *b, size_t len) +{ + return memcmp(a, b, len); +} +EXPORT_SYMBOL(bcmp); +#endif + #ifndef __HAVE_ARCH_MEMSCAN /** * memscan - Find a character in an area of memory. |