mount_root: keep track of overlay initialization state (via xattr)
[project/fstools.git] / 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
21 struct volume;
22
23 enum {
24 FS_NONE,
25 FS_SNAPSHOT,
26 FS_JFFS2,
27 FS_DEADCODE,
28 FS_UBIFS,
29 };
30
31 enum fs_state {
32 FS_STATE_UNKNOWN,
33 FS_STATE_PENDING,
34 FS_STATE_READY,
35 __FS_STATE_LAST = FS_STATE_READY,
36 };
37
38 extern char const *extroot_prefix;
39 extern int mount_extroot(void);
40 extern int mount_snapshot(struct volume *v);
41 extern int mount_overlay(struct volume *v);
42
43 extern int mount_move(char *oldroot, char *newroot, char *dir);
44 extern int pivot(char *new, char *old);
45 extern int fopivot(char *rw_root, char *ro_root);
46 extern int ramoverlay(void);
47
48 extern int find_overlay_mount(char *overlay);
49 extern char* find_mount(char *mp);
50 extern char* find_mount_point(char *block, int mtd_only);
51 extern int find_filesystem(char *fs);
52
53 extern int jffs2_switch(struct volume *v);
54
55 extern int handle_whiteout(const char *dir);
56 extern void foreachdir(const char *dir, int (*cb)(const char*));
57
58 extern void overlay_delete(const char *dir, bool keep_sysupgrade);
59
60 enum fs_state fs_state_get(const char *dir);
61 int fs_state_set(const char *dir, enum fs_state state);
62
63 #endif