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
  33 extern char modprobe_path[]; /* for sysctl */
  34 /* modprobe exit status on success, -ve on error.  Return value
  35  * usually useless though. */
  36 extern __printf(2, 3)
  37 int __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
  43 static inline int request_module(const char *name, ...) { return -ENOSYS; }
  44 static 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__ */