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authorKees Cook <keescook@chromium.org>2016-03-17 14:22:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-17 15:09:34 -0700
commita81a5a17d44b26521fb1199f8ccf27f4af337a67 (patch)
tree20e808f905e3ab2c24fcb9df40e2d0143f5a98b0 /lib/kstrtox.c
parent1404297ebf76fd91a41de215fc8c94c2619e5fdb (diff)
lib: add "on"/"off" support to kstrtobool
Add support for "on" and "off" when converting to boolean. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Amitkumar Karwar <akarwar@marvell.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Joe Perches <joe@perches.com> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nishant Sarmukadam <nishants@marvell.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Steve French <sfrench@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/kstrtox.c')
-rw-r--r--lib/kstrtox.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index e8ba4a013e82..d8a5cf66c316 100644
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -326,9 +326,9 @@ EXPORT_SYMBOL(kstrtos8);
* @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 kstrtobool(const char *s, bool *res)
{
@@ -346,6 +346,20 @@ int kstrtobool(const char *s, bool *res)
case '0':
*res = false;
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:
break;
}