mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
421671b1c2
- we have these levels when the udev rules are processed:
10-dm.rules --> [11-dm-<subsystem>.rules] --> [12-dm-permissions.rules] -->
13-dm-disk.rules --> [...all the other foreign rules...] --> 95-dm-notify.rules
- each level can be disabled now by
DM_UDEV_DISABLE_{DM, SUBSYSTEM, DISK, OTHER}_RULES_FLAG
- add DM_UDEV_DISABLE_DM_RULES_FLAG to disable 10-dm.rules
- add DM_UDEV_DISABLE_OTHER_RULES_FLAG to disable all the other (non-dm) rules.
We cutoff these rules by using the 'last_rule', so this one should really be
used with great care and in well-founded situations. We use this for lvm's
hidden and layer devices now.
- add a parameter for add_dev_node, rm_dev_node and rename_dev_node so it's
possible to switch on/off udev checks
- use DM_UDEV_DISABLE_DM_RULES_FLAG and DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG
if there's no cookie set and we have resume, remove and rename ioctl.
This could happen when someone uses the libdevmapper that is compiled with
udev_sync but the software does not make use of it. This way we can switch
off the rules and fallback to libdevmapper node creation so there's no
udev/libdevmapper race.
36 lines
1.3 KiB
C
36 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of the device-mapper userspace tools.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU Lesser General Public License v.2.1.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef LIB_DMCOMMON_H
|
|
#define LIB_DMCOMMON_H
|
|
|
|
#include "libdevmapper.h"
|
|
|
|
struct target *create_target(uint64_t start,
|
|
uint64_t len,
|
|
const char *type, const char *params);
|
|
|
|
int add_dev_node(const char *dev_name, uint32_t minor, uint32_t major,
|
|
uid_t uid, gid_t gid, mode_t mode, int check_udev);
|
|
int rm_dev_node(const char *dev_name, int check_udev);
|
|
int rename_dev_node(const char *old_name, const char *new_name,
|
|
int check_udev);
|
|
int get_dev_node_read_ahead(const char *dev_name, uint32_t *read_ahead);
|
|
int set_dev_node_read_ahead(const char *dev_name, uint32_t read_ahead,
|
|
uint32_t read_ahead_flags);
|
|
void update_devs(void);
|
|
|
|
#endif
|