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param: check for tainting before calling set op.

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This means every set op doesn't need to call it, and it can move into
params.c.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2014-08-27 06:25:23 +09:30
parent fc9740cebc
commit 7a486d3781
2 changed files with 11 additions and 27 deletions
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16
include/linux/moduleparam.h
View file

@ -374,22 +374,6 @@ static inline void destroy_params(const struct kernel_param *params,
#define __param_check(name, p, type) \
static inline type __always_unused *__check_##name(void) { return(p); }
/**
* param_check_unsafe - Warn and taint the kernel if setting dangerous options.
*
* This gets called from all the standard param setters, but can be used from
* custom setters as well.
*/
static inline void
param_check_unsafe(const struct kernel_param *kp)
{
if (kp->flags & KERNEL_PARAM_FL_UNSAFE) {
pr_warn("Setting dangerous option %s - tainting kernel\n",
kp->name);
add_taint(TAINT_USER, LOCKDEP_STILL_OK);
}
}
extern struct kernel_param_ops param_ops_byte;
extern int param_set_byte(const char *val, const struct kernel_param *kp);
extern int param_get_byte(char *buffer, const struct kernel_param *kp);