1#ifndef __LINUX_KMOD_H__
2#define __LINUX_KMOD_H__
3
4/*
5 *	include/linux/kmod.h
6 *
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.
11 *
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.
16 *
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.
20 */
21
22#include <linux/stddef.h>
23#include <linux/errno.h>
24#include <linux/compiler.h>
25
26#define KMOD_PATH_LEN 256
27
28#ifdef CONFIG_KMOD
29/* modprobe exit status on success, -ve on error.  Return value
30 * usually useless though. */
31extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2)));
32#else
33static inline int request_module(const char * name, ...) { return -ENOSYS; }
34#endif
35
36#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x)))
37
38struct key;
39extern int call_usermodehelper_keys(char *path, char *argv[], char *envp[],
40				    struct key *session_keyring, int wait);
41
42static inline int
43call_usermodehelper(char *path, char **argv, char **envp, int wait)
44{
45	return call_usermodehelper_keys(path, argv, envp, NULL, wait);
46}
47
48extern void usermodehelper_init(void);
49
50struct file;
51extern int call_usermodehelper_pipe(char *path, char *argv[], char *envp[],
52				    struct file **filp);
53
54#endif /* __LINUX_KMOD_H__ */
55