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lib: add "on"/"off" support to kstrtobool

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Add support for "on" and "off" when converting to boolean.

Signed-off-by: Kees Cook <[email protected]>
Cc: Amitkumar Karwar <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Daniel Borkmann <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Joe Perches <[email protected]>
Cc: Kalle Valo <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Nishant Sarmukadam <[email protected]>
Cc: Rasmus Villemoes <[email protected]>
Cc: Steve French <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kees Cook 2016-03-17 14:22:57 -07:00 • committed by Linus Torvalds
commit a81a5a17d4
1 changed files with 17 additions and 3 deletions
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20
lib/kstrtox.c
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@ -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;
}