libdm/libdm-common.h

   1 /*
   2  * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
   3  * Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
   4  *
   5  * This file is part of the device-mapper userspace tools.
   6  *
   7  * This copyrighted material is made available to anyone wishing to use,
   8  * modify, copy, or redistribute it subject to the terms and conditions
   9  * of the GNU Lesser General Public License v.2.1.
  10  *
  11  * You should have received a copy of the GNU Lesser General Public License
  12  * along with this program; if not, write to the Free Software Foundation,
  13  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  14  */
  15
  16 #ifndef LIB_DMCOMMON_H
  17 #define LIB_DMCOMMON_H
  18
  19 #include "libdevmapper.h"
  20
  21 #define DM_DEFAULT_NAME_MANGLING_MODE_ENV_VAR_NAME "DM_DEFAULT_NAME_MANGLING_MODE"
  22
  23 #define DEV_NAME(dmt) (dmt->mangled_dev_name ? : dmt->dev_name)
  24
  25 int mangle_name(const char *str, size_t len, char *buf,
  26                 size_t buf_len, dm_string_mangling_t mode);
  27
  28 int unmangle_name(const char *str, size_t len, char *buf,
  29                   size_t buf_len, dm_string_mangling_t mode);
  30
  31 int check_multiple_mangled_name_allowed(dm_string_mangling_t mode, const char *name);
  32
  33 struct target *create_target(uint64_t start,
  34                              uint64_t len,
  35                              const char *type, const char *params);
  36
  37 int add_dev_node(const char *dev_name, uint32_t minor, uint32_t major,
  38                  uid_t uid, gid_t gid, mode_t mode, int check_udev, unsigned rely_on_udev);
  39 int rm_dev_node(const char *dev_name, int check_udev, unsigned rely_on_udev);
  40 int rename_dev_node(const char *old_name, const char *new_name,
  41                     int check_udev, unsigned rely_on_udev);
  42 int get_dev_node_read_ahead(const char *dev_name, uint32_t major, uint32_t minor,
  43                             uint32_t *read_ahead);
  44 int set_dev_node_read_ahead(const char *dev_name, uint32_t major, uint32_t minor,
  45                             uint32_t read_ahead, uint32_t read_ahead_flags);
  46 void update_devs(void);
  47 void selinux_release(void);
  48
  49 void inc_suspended(void);
  50 void dec_suspended(void);
  51
  52 #endif