1 #ifndef __LINUX_UMH_H__
2 #define __LINUX_UMH_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>
14 #define UMH_NO_WAIT 0 /* don't wait at all */
15 #define UMH_WAIT_EXEC 1 /* wait for the exec, but not the process */
16 #define UMH_WAIT_PROC 2 /* wait for the process to complete */
17 #define UMH_KILLABLE 4 /* wait for EXEC/PROC killable */
19 struct subprocess_info
{
20 struct work_struct work
;
21 struct completion
*complete
;
29 int (*init
)(struct subprocess_info
*info
, struct cred
*new);
30 void (*cleanup
)(struct subprocess_info
*info
);
35 call_usermodehelper(const char *path
, char **argv
, char **envp
, int wait
);
37 extern struct subprocess_info
*
38 call_usermodehelper_setup(const char *path
, char **argv
, char **envp
,
40 int (*init
)(struct subprocess_info
*info
, struct cred
*new),
41 void (*cleanup
)(struct subprocess_info
*), void *data
);
43 struct subprocess_info
*call_usermodehelper_setup_file(struct file
*file
,
44 int (*init
)(struct subprocess_info
*info
, struct cred
*new),
45 void (*cleanup
)(struct subprocess_info
*), void *data
);
48 struct file
*pipe_to_umh
;
49 struct file
*pipe_from_umh
;
52 int fork_usermode_blob(void *data
, size_t len
, struct umh_info
*info
);
55 call_usermodehelper_exec(struct subprocess_info
*info
, int wait
);
57 extern struct ctl_table usermodehelper_table
[];
59 enum umh_disable_depth
{
65 extern int __usermodehelper_disable(enum umh_disable_depth depth
);
66 extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth
);
68 static inline int usermodehelper_disable(void)
70 return __usermodehelper_disable(UMH_DISABLED
);
73 static inline void usermodehelper_enable(void)
75 __usermodehelper_set_disable_depth(UMH_ENABLED
);
78 extern int usermodehelper_read_trylock(void);
79 extern long usermodehelper_read_lock_wait(long timeout
);
80 extern void usermodehelper_read_unlock(void);
82 #endif /* __LINUX_UMH_H__ */