mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-28 20:02:17 +00:00
861dc0b464
Move the umh sysctl registration to its own file, the array is already there. We do this to remove the clutter out of kernel/sysctl.c to avoid merge conflicts. This also lets the sysctls not be built at all now when CONFIG_SYSCTL is not enabled. This has a small penalty of 23 bytes but soon we'll be removing all the empty entries on sysctl arrays so just do this cleanup now: ./scripts/bloat-o-meter vmlinux.base vmlinux.1 add/remove: 2/0 grow/shrink: 0/1 up/down: 49/-26 (23) Function old new delta init_umh_sysctls - 33 +33 __pfx_init_umh_sysctls - 16 +16 sysctl_init_bases 111 85 -26 Total: Before=21256914, After=21256937, chg +0.00% Acked-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
#ifndef __LINUX_UMH_H__
|
|
#define __LINUX_UMH_H__
|
|
|
|
#include <linux/gfp.h>
|
|
#include <linux/stddef.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/sysctl.h>
|
|
|
|
struct cred;
|
|
struct file;
|
|
|
|
#define UMH_NO_WAIT 0x00 /* don't wait at all */
|
|
#define UMH_WAIT_EXEC 0x01 /* wait for the exec, but not the process */
|
|
#define UMH_WAIT_PROC 0x02 /* wait for the process to complete */
|
|
#define UMH_KILLABLE 0x04 /* wait for EXEC/PROC killable */
|
|
#define UMH_FREEZABLE 0x08 /* wait for EXEC/PROC freezable */
|
|
|
|
struct subprocess_info {
|
|
struct work_struct work;
|
|
struct completion *complete;
|
|
const char *path;
|
|
char **argv;
|
|
char **envp;
|
|
int wait;
|
|
int retval;
|
|
int (*init)(struct subprocess_info *info, struct cred *new);
|
|
void (*cleanup)(struct subprocess_info *info);
|
|
void *data;
|
|
} __randomize_layout;
|
|
|
|
extern int
|
|
call_usermodehelper(const char *path, char **argv, char **envp, int wait);
|
|
|
|
extern struct subprocess_info *
|
|
call_usermodehelper_setup(const char *path, char **argv, char **envp,
|
|
gfp_t gfp_mask,
|
|
int (*init)(struct subprocess_info *info, struct cred *new),
|
|
void (*cleanup)(struct subprocess_info *), void *data);
|
|
|
|
extern int
|
|
call_usermodehelper_exec(struct subprocess_info *info, int wait);
|
|
|
|
enum umh_disable_depth {
|
|
UMH_ENABLED = 0,
|
|
UMH_FREEZING,
|
|
UMH_DISABLED,
|
|
};
|
|
|
|
extern int __usermodehelper_disable(enum umh_disable_depth depth);
|
|
extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth);
|
|
|
|
static inline int usermodehelper_disable(void)
|
|
{
|
|
return __usermodehelper_disable(UMH_DISABLED);
|
|
}
|
|
|
|
static inline void usermodehelper_enable(void)
|
|
{
|
|
__usermodehelper_set_disable_depth(UMH_ENABLED);
|
|
}
|
|
|
|
extern int usermodehelper_read_trylock(void);
|
|
extern long usermodehelper_read_lock_wait(long timeout);
|
|
extern void usermodehelper_read_unlock(void);
|
|
|
|
#endif /* __LINUX_UMH_H__ */
|