diff options
| author | Michal Schmidt <mschmidt@redhat.com> | 2011-10-10 00:03:37 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2011-10-26 13:10:39 +1030 |
| commit | b1e4d20cbf2ef8e27515da032b95fdcbb5b06bf1 (patch) | |
| tree | f080e839635fa36f55d22d147baa12ae64d4c181 /include/linux | |
| parent | 37252db6aa576c34fd794a5a54fb32d7a8b3a07a (diff) | |
| download | talos-obmc-linux-b1e4d20cbf2ef8e27515da032b95fdcbb5b06bf1.tar.gz talos-obmc-linux-b1e4d20cbf2ef8e27515da032b95fdcbb5b06bf1.zip | |
params: make dashes and underscores in parameter names truly equal
The user may use "foo-bar" for a kernel parameter defined as "foo_bar".
Make sure it works the other way around too.
Apply the equality of dashes and underscores on early_params and __setup
params as well.
The example given in Documentation/kernel-parameters.txt indicates that
this is the intended behaviour.
With the patch the kernel accepts "log-buf-len=1M" as expected.
https://bugzilla.redhat.com/show_bug.cgi?id=744545
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (neatened implementations)
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/moduleparam.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h index ddaae98c53f9..fffb10bd5514 100644 --- a/include/linux/moduleparam.h +++ b/include/linux/moduleparam.h @@ -262,6 +262,26 @@ static inline void __kernel_param_unlock(void) .str = &__param_string_##name, 0, perm); \ __MODULE_PARM_TYPE(name, "string") +/** + * parameq - checks if two parameter names match + * @name1: parameter name 1 + * @name2: parameter name 2 + * + * Returns true if the two parameter names are equal. + * Dashes (-) are considered equal to underscores (_). + */ +extern bool parameq(const char *name1, const char *name2); + +/** + * parameqn - checks if two parameter names match + * @name1: parameter name 1 + * @name2: parameter name 2 + * @n: the length to compare + * + * Similar to parameq(), except it compares @n characters. + */ +extern bool parameqn(const char *name1, const char *name2, size_t n); + /* Called on module insert or kernel boot */ extern int parse_args(const char *name, char *args, |
