libfstools/libfstools.h

   1 /*
   2  * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License version 2.1
   6  * as published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  */
  13
  14 #ifndef _FS_STATE_H__
  15 #define _FS_STATE_H__
  16
  17 #include <libubox/list.h>
  18 #include <libubox/blob.h>
  19 #include <libubox/ulog.h>
  20 #include <libubox/utils.h>
  21
  22 struct volume;
  23
  24 enum {
  25         FS_NONE,
  26         FS_SNAPSHOT,
  27         FS_JFFS2,
  28         FS_DEADCODE,
  29         FS_UBIFS,
  30         FS_F2FS,
  31         FS_EXT4,
  32         FS_TARGZ,
  33 };
  34
  35 enum fs_state {
  36         FS_STATE_UNKNOWN,
  37         FS_STATE_PENDING,
  38         FS_STATE_READY,
  39         __FS_STATE_LAST = FS_STATE_READY,
  40 };
  41
  42 extern char const *extroot_prefix;
  43 extern int mount_extroot(void);
  44 extern int mount_snapshot(struct volume *v);
  45 extern int mount_overlay(struct volume *v);
  46
  47 extern int mount_move(const char *oldroot, const char *newroot, const char *dir);
  48 extern int pivot(char *new, char *old);
  49 extern int fopivot(char *rw_root, char *ro_root);
  50 extern int ramoverlay(void);
  51
  52 extern int find_overlay_mount(char *overlay);
  53 extern char* find_mount(char *mp);
  54 extern char* find_mount_point(char *block, int root_only);
  55 extern int find_filesystem(char *fs);
  56
  57 extern int jffs2_switch(struct volume *v);
  58
  59 extern int handle_whiteout(const char *dir);
  60 extern void foreachdir(const char *dir, int (*cb)(const char*));
  61
  62 extern void overlay_delete(const char *dir, bool keep_sysupgrade);
  63
  64 enum fs_state fs_state_get(const char *dir);
  65 int fs_state_set(const char *dir, enum fs_state state);
  66 void selinux_restorecon(char *overlaydir);
  67
  68 #endif