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params: Introduce the param_unknown_fn type

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Introduce a new type for the callback to parse an unknown argument.
This unifies function prototypes which takes that as a parameter.

Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20231120151419.1661807-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Andy Shevchenko 2023-11-20 17:11:42 +02:00 committed by Kees Cook
parent aabf7c37df
commit 12cd3cd8c7
2 changed files with 5 additions and 9 deletions
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6
include/linux/moduleparam.h
View File

@ -385,6 +385,8 @@ extern bool parameq(const char *name1, const char *name2);
*/
extern bool parameqn(const char *name1, const char *name2, size_t n);
typedef int (*parse_unknown_fn)(char *param, char *val, const char *doing, void *arg);
/* Called on module insert or kernel boot */
extern char *parse_args(const char *name,
char *args,
@ -392,9 +394,7 @@ extern char *parse_args(const char *name,
unsigned num,
s16 level_min,
s16 level_max,
void *arg,
int (*unknown)(char *param, char *val,
const char *doing, void *arg));
void *arg, parse_unknown_fn unknown);
/* Called by module remove. */
#ifdef CONFIG_SYSFS

8
kernel/params.c
View File

@ -120,9 +120,7 @@ static int parse_one(char *param,
unsigned num_params,
s16 min_level,
s16 max_level,
void *arg,
int (*handle_unknown)(char *param, char *val,
const char *doing, void *arg))
void *arg, parse_unknown_fn handle_unknown)
{
unsigned int i;
int err;
@ -165,9 +163,7 @@ char *parse_args(const char *doing,
unsigned num,
s16 min_level,
s16 max_level,
void *arg,
int (*unknown)(char *param, char *val,
const char *doing, void *arg))
void *arg, parse_unknown_fn unknown)
{
char *param, *val, *err = NULL;