Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef __LINUX_UMH_H__
2#define __LINUX_UMH_H__
3
4#include <linux/gfp.h>
5#include <linux/stddef.h>
6#include <linux/errno.h>
7#include <linux/compiler.h>
8#include <linux/workqueue.h>
9#include <linux/sysctl.h>
10
11struct cred;
12struct file;
13
14#define UMH_NO_WAIT 0x00 /* don't wait at all */
15#define UMH_WAIT_EXEC 0x01 /* wait for the exec, but not the process */
16#define UMH_WAIT_PROC 0x02 /* wait for the process to complete */
17#define UMH_KILLABLE 0x04 /* wait for EXEC/PROC killable */
18#define UMH_FREEZABLE 0x08 /* wait for EXEC/PROC freezable */
19
20struct subprocess_info {
21 struct work_struct work;
22 struct completion *complete;
23 const char *path;
24 char **argv;
25 char **envp;
26 int wait;
27 int retval;
28 int (*init)(struct subprocess_info *info, struct cred *new);
29 void (*cleanup)(struct subprocess_info *info);
30 void *data;
31} __randomize_layout;
32
33extern int
34call_usermodehelper(const char *path, char **argv, char **envp, int wait);
35
36extern struct subprocess_info *
37call_usermodehelper_setup(const char *path, char **argv, char **envp,
38 gfp_t gfp_mask,
39 int (*init)(struct subprocess_info *info, struct cred *new),
40 void (*cleanup)(struct subprocess_info *), void *data);
41
42extern int
43call_usermodehelper_exec(struct subprocess_info *info, int wait);
44
45extern struct ctl_table usermodehelper_table[];
46
47enum umh_disable_depth {
48 UMH_ENABLED = 0,
49 UMH_FREEZING,
50 UMH_DISABLED,
51};
52
53extern int __usermodehelper_disable(enum umh_disable_depth depth);
54extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth);
55
56static inline int usermodehelper_disable(void)
57{
58 return __usermodehelper_disable(UMH_DISABLED);
59}
60
61static inline void usermodehelper_enable(void)
62{
63 __usermodehelper_set_disable_depth(UMH_ENABLED);
64}
65
66extern int usermodehelper_read_trylock(void);
67extern long usermodehelper_read_lock_wait(long timeout);
68extern void usermodehelper_read_unlock(void);
69
70#endif /* __LINUX_UMH_H__ */