#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__ */