LXR linux/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. */
  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
  50#endif /* __LINUX_KMOD_H__ */
  51