include/linux/kmod.h

   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. */
  31 extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2)));
  32 #else
  33 static 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
  38 struct key;
  39 extern int call_usermodehelper_keys(char *path, char *argv[], char *envp[],
  40                                     struct key *session_keyring, int wait);
  41
  42 static inline int
  43 call_usermodehelper(char *path, char **argv, char **envp, int wait)
  44 {
  45         return call_usermodehelper_keys(path, argv, envp, NULL, wait);
  46 }
  47
  48 extern void usermodehelper_init(void);
  49
  50 struct file;
  51 extern int call_usermodehelper_pipe(char *path, char *argv[], char *envp[],
  52                                     struct file **filp);
  53
  54 #endif /* __LINUX_KMOD_H__ */