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c1f3fa2a LR |
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 | ||
11 | struct cred; | |
12 | struct file; | |
13 | ||
1fbcaa92 PZ |
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 */ | |
c1f3fa2a LR |
19 | |
20 | struct 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 | ||
33 | extern int | |
34 | call_usermodehelper(const char *path, char **argv, char **envp, int wait); | |
35 | ||
36 | extern struct subprocess_info * | |
37 | call_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 | ||
42 | extern int | |
43 | call_usermodehelper_exec(struct subprocess_info *info, int wait); | |
44 | ||
c1f3fa2a LR |
45 | enum umh_disable_depth { |
46 | UMH_ENABLED = 0, | |
47 | UMH_FREEZING, | |
48 | UMH_DISABLED, | |
49 | }; | |
50 | ||
51 | extern int __usermodehelper_disable(enum umh_disable_depth depth); | |
52 | extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth); | |
53 | ||
54 | static inline int usermodehelper_disable(void) | |
55 | { | |
56 | return __usermodehelper_disable(UMH_DISABLED); | |
57 | } | |
58 | ||
59 | static inline void usermodehelper_enable(void) | |
60 | { | |
61 | __usermodehelper_set_disable_depth(UMH_ENABLED); | |
62 | } | |
63 | ||
64 | extern int usermodehelper_read_trylock(void); | |
65 | extern long usermodehelper_read_lock_wait(long timeout); | |
66 | extern void usermodehelper_read_unlock(void); | |
67 | ||
68 | #endif /* __LINUX_UMH_H__ */ |