1 #ifndef __LINUX_KMOD_H__
2 #define __LINUX_KMOD_H__
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/gfp.h>
23 #include <linux/stddef.h>
24 #include <linux/errno.h>
25 #include <linux/compiler.h>
26 #include <linux/workqueue.h>
27 #include <linux/sysctl.h>
29 #define KMOD_PATH_LEN 256
32 extern char modprobe_path
[]; /* for sysctl */
33 /* modprobe exit status on success, -ve on error. Return value
34 * usually useless though. */
36 int __request_module(bool wait
, const char *name
, ...);
37 #define request_module(mod...) __request_module(true, mod)
38 #define request_module_nowait(mod...) __request_module(false, mod)
39 #define try_then_request_module(x, mod...) \
40 ((x) ?: (__request_module(true, mod), (x)))
42 static inline int request_module(const char *name
, ...) { return -ENOSYS
; }
43 static inline int request_module_nowait(const char *name
, ...) { return -ENOSYS
; }
44 #define try_then_request_module(x, mod...) (x)
51 #define UMH_NO_WAIT 0 /* don't wait at all */
52 #define UMH_WAIT_EXEC 1 /* wait for the exec, but not the process */
53 #define UMH_WAIT_PROC 2 /* wait for the process to complete */
54 #define UMH_KILLABLE 4 /* wait for EXEC/PROC killable */
56 struct subprocess_info
{
57 struct work_struct work
;
58 struct completion
*complete
;
64 int (*init
)(struct subprocess_info
*info
, struct cred
*new);
65 void (*cleanup
)(struct subprocess_info
*info
);
70 call_usermodehelper_fns(char *path
, char **argv
, char **envp
, int wait
,
71 int (*init
)(struct subprocess_info
*info
, struct cred
*new),
72 void (*cleanup
)(struct subprocess_info
*), void *data
);
75 call_usermodehelper(char *path
, char **argv
, char **envp
, int wait
)
77 return call_usermodehelper_fns(path
, argv
, envp
, wait
,
81 extern struct ctl_table usermodehelper_table
[];
83 enum umh_disable_depth
{
89 extern void usermodehelper_init(void);
91 extern int __usermodehelper_disable(enum umh_disable_depth depth
);
92 extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth
);
94 static inline int usermodehelper_disable(void)
96 return __usermodehelper_disable(UMH_DISABLED
);
99 static inline void usermodehelper_enable(void)
101 __usermodehelper_set_disable_depth(UMH_ENABLED
);
104 extern int usermodehelper_read_trylock(void);
105 extern long usermodehelper_read_lock_wait(long timeout
);
106 extern void usermodehelper_read_unlock(void);
108 #endif /* __LINUX_KMOD_H__ */