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/umh.h>
  23#include <linux/gfp.h>
  24#include <linux/stddef.h>
  25#include <linux/errno.h>
  26#include <linux/compiler.h>
  27#include <linux/workqueue.h>
  28#include <linux/sysctl.h>
  29
  30#define KMOD_PATH_LEN 256
  31
  32#ifdef CONFIG_MODULES
  33extern char modprobe_path[]; /* for sysctl */
  34/* modprobe exit status on success, -ve on error.  Return value
  35 * usually useless though. */
  36extern __printf(2, 3)
  37int __request_module(bool wait, const char *name, ...);
  38#define request_module(mod...) __request_module(true, mod)
  39#define request_module_nowait(mod...) __request_module(false, mod)
  40#define try_then_request_module(x, mod...) \
  41        ((x) ?: (__request_module(true, mod), (x)))
  42#else
  43static inline int request_module(const char *name, ...) { return -ENOSYS; }
  44static inline int request_module_nowait(const char *name, ...) { return -ENOSYS; }
  45#define try_then_request_module(x, mod...) (x)
  46#endif
  47
  48#endif /* __LINUX_KMOD_H__ */
  49