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Current File : /lib/modules/3.10.0-1160.119.1.el7.x86_64/source/include/linux/kmod.h
#ifndef __LINUX_KMOD_H__
#define __LINUX_KMOD_H__
/*
* include/linux/kmod.h
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/gfp.h>
#include <linux/stddef.h>
#include <linux/errno.h>
#include <linux/compiler.h>
#include <linux/workqueue.h>
#include <linux/sysctl.h>
#define KMOD_PATH_LEN 256
#ifdef CONFIG_MODULES
extern char modprobe_path[]; /* for sysctl */
/* modprobe exit status on success, -ve on error. Return value
* usually useless though. */
extern __printf(2, 3)
int __request_module(bool wait, const char *name, ...);
#define request_module(mod...) __request_module(true, mod)
#define request_module_nowait(mod...) __request_module(false, mod)
#define try_then_request_module(x, mod...) \
((x) ?: (__request_module(true, mod), (x)))
#else
static inline int request_module(const char *name, ...) { return -ENOSYS; }
static inline int request_module_nowait(const char *name, ...) { return -ENOSYS; }
#define try_then_request_module(x, mod...) (x)
#endif
struct cred;
struct file;
#define UMH_NO_WAIT 0 /* don't wait at all */
#define UMH_WAIT_EXEC 1 /* wait for the exec, but not the process */
#define UMH_WAIT_PROC 2 /* wait for the process to complete */
#define UMH_KILLABLE 4 /* wait for EXEC/PROC killable */
struct subprocess_info {
struct work_struct work;
struct completion *complete;
char *path;
char **argv;
char **envp;
int wait;
int retval;
int (*init)(struct subprocess_info *info, struct cred *new);
void (*cleanup)(struct subprocess_info *info);
void *data;
};
extern int
call_usermodehelper(char *path, char **argv, char **envp, int wait);
extern struct subprocess_info *
call_usermodehelper_setup(char *path, char **argv, char **envp, gfp_t gfp_mask,
int (*init)(struct subprocess_info *info, struct cred *new),
void (*cleanup)(struct subprocess_info *), void *data);
extern int
call_usermodehelper_exec(struct subprocess_info *info, int wait);
extern struct ctl_table usermodehelper_table[];
enum umh_disable_depth {
UMH_ENABLED = 0,
UMH_FREEZING,
UMH_DISABLED,
};
extern int __usermodehelper_disable(enum umh_disable_depth depth);
extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth);
static inline int usermodehelper_disable(void)
{
return __usermodehelper_disable(UMH_DISABLED);
}
static inline void usermodehelper_enable(void)
{
__usermodehelper_set_disable_depth(UMH_ENABLED);
}
extern int usermodehelper_read_trylock(void);
extern long usermodehelper_read_lock_wait(long timeout);
extern void usermodehelper_read_unlock(void);
#endif /* __LINUX_KMOD_H__ */