c353c3fb07
On recent systems, calls to /sbin/modprobe are handled by udev depending on the kind of device the kernel has discovered. This patch creates an uevent for the kernels internal request_module(), to let udev take control over the request, instead of forking the binary directly by the kernel. The direct execution of /sbin/modprobe can be disabled by setting: /sys/module/kmod/mod_request_helper (/proc/sys/kernel/modprobe) to an empty string, the same way /proc/sys/kernel/hotplug is disabled on an udev system. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
#ifndef __LINUX_KMOD_H__
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#define __LINUX_KMOD_H__
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/*
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* include/linux/kmod.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/stddef.h>
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#include <linux/errno.h>
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#include <linux/compiler.h>
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#define KMOD_PATH_LEN 256
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#ifdef CONFIG_KMOD
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/* modprobe exit status on success, -ve on error. Return value
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* usually useless though. */
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extern void kmod_sysfs_init(void);
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extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2)));
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#else
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static inline void kmod_sysfs_init(void) {};
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static inline int request_module(const char * name, ...) { return -ENOSYS; }
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#endif
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#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x)))
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struct key;
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extern int call_usermodehelper_keys(char *path, char *argv[], char *envp[],
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struct key *session_keyring, int wait);
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static inline int
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call_usermodehelper(char *path, char **argv, char **envp, int wait)
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{
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return call_usermodehelper_keys(path, argv, envp, NULL, wait);
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}
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extern void usermodehelper_init(void);
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struct file;
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extern int call_usermodehelper_pipe(char *path, char *argv[], char *envp[],
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struct file **filp);
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#endif /* __LINUX_KMOD_H__ */
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