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/stddef.h>
23 #include <linux/errno.h>
24 #include <linux/compiler.h>
26 #define KMOD_PATH_LEN 256
29 /* modprobe exit status on success, -ve on error. Return value
30 * usually useless though. */
31 extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2)));
32 #define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x)))
34 static inline int request_module(const char * name, ...) { return -ENOSYS; }
35 #define try_then_request_module(x, mod...) (x)
41 struct subprocess_info;
43 /* Allocate a subprocess_info structure */
44 struct subprocess_info *call_usermodehelper_setup(char *path,
45 char **argv, char **envp);
47 /* Set various pieces of state into the subprocess_info structure */
48 void call_usermodehelper_setkeys(struct subprocess_info *info,
49 struct key *session_keyring);
50 int call_usermodehelper_stdinpipe(struct subprocess_info *sub_info,
52 void call_usermodehelper_setcleanup(struct subprocess_info *info,
53 void (*cleanup)(char **argv, char **envp));
56 UMH_NO_WAIT = -1, /* don't wait at all */
57 UMH_WAIT_EXEC = 0, /* wait for the exec, but not the process */
58 UMH_WAIT_PROC = 1, /* wait for the process to complete */
61 /* Actually execute the sub-process */
62 int call_usermodehelper_exec(struct subprocess_info *info, enum umh_wait wait);
64 /* Free the subprocess_info. This is only needed if you're not going
65 to call call_usermodehelper_exec */
66 void call_usermodehelper_freeinfo(struct subprocess_info *info);
69 call_usermodehelper(char *path, char **argv, char **envp, enum umh_wait wait)
71 struct subprocess_info *info;
73 info = call_usermodehelper_setup(path, argv, envp);
76 return call_usermodehelper_exec(info, wait);
80 call_usermodehelper_keys(char *path, char **argv, char **envp,
81 struct key *session_keyring, enum umh_wait wait)
83 struct subprocess_info *info;
85 info = call_usermodehelper_setup(path, argv, envp);
89 call_usermodehelper_setkeys(info, session_keyring);
90 return call_usermodehelper_exec(info, wait);
93 extern void usermodehelper_init(void);
96 extern int call_usermodehelper_pipe(char *path, char *argv[], char *envp[],
99 #endif /* __LINUX_KMOD_H__ */