LXR linux/include/linux/kmod.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2#ifndef __LINUX_KMOD_H__
   3#define __LINUX_KMOD_H__
   4
   5/*
   6 *      include/linux/kmod.h
   7 */
   8
   9#include <linux/umh.h>
  10#include <linux/gfp.h>
  11#include <linux/stddef.h>
  12#include <linux/errno.h>
  13#include <linux/compiler.h>
  14#include <linux/workqueue.h>
  15#include <linux/sysctl.h>
  16
  17#define KMOD_PATH_LEN 256
  18
  19#ifdef CONFIG_MODULES
  20extern char modprobe_path[]; /* for sysctl */
  21/* modprobe exit status on success, -ve on error.  Return value
  22 * usually useless though. */
  23extern __printf(2, 3)
  24int __request_module(bool wait, const char *name, ...);
  25#define request_module(mod...) __request_module(true, mod)
  26#define request_module_nowait(mod...) __request_module(false, mod)
  27#define try_then_request_module(x, mod...) \
  28        ((x) ?: (__request_module(true, mod), (x)))
  29#else
  30static inline int request_module(const char *name, ...) { return -ENOSYS; }
  31static inline int request_module_nowait(const char *name, ...) { return -ENOSYS; }
  32#define try_then_request_module(x, mod...) (x)
  33#endif
  34
  35#endif /* __LINUX_KMOD_H__ */
  36