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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-20 15:36:52 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-20 15:36:52 +1000 |
| commit | 880102e78547c1db158a17e36cf0cdd98e7ad710 (patch) | |
| tree | 3fff9cc54c44dafe275cfabefb96c589e08d971d /lib/string.c | |
| parent | 3d07f0e83d4323d2cd45cc583f7cf1957aca3cac (diff) | |
| parent | 39ab05c8e0b519ff0a04a869f065746e6e8c3d95 (diff) | |
Merge remote branch 'origin/master' into merge
Manual merge of arch/powerpc/kernel/smp.c and add missing scheduler_ipi()
call to arch/powerpc/platforms/cell/interrupt.c
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'lib/string.c')
| -rw-r--r-- | lib/string.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/lib/string.c b/lib/string.c index f71bead1be3e..01fad9b203e1 100644 --- a/lib/string.c +++ b/lib/string.c @@ -535,6 +535,35 @@ 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 |