1/*
2 * Copyright � 2007 Alistair Crooks.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote
13 *    products derived from this software without specific prior written
14 *    permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
22 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#ifndef FUSE_TREE_H_
29#define FUSE_TREE_H_	20070405
30
31#include <sys/types.h>
32#include <sys/stat.h>
33
34#include <fuse.h>
35
36#include "defs.h"
37
38/* this struct keeps a note of all the info related to a virtual directory entry */
39typedef struct virt_dirent_t {
40	char		*name;		/* entry name - used as key */
41	size_t		 namelen;	/* length of name */
42	char		*d_name;	/* component in this directory */
43	char		*tgt;		/* any symlink target */
44	size_t		 tgtlen;	/* length of symlink target */
45	uint8_t		 type;		/* entry type - file, dir, lnk */
46	ino_t		 ino;		/* inode number */
47} virt_dirent_t;
48
49/* this defines the list of virtual directory entries,
50   sorted in name alpha order */
51typedef struct virtdir_t {
52	uint32_t	 c;		/* count of entries */
53	uint32_t	 size;		/* size of allocated list */
54	virt_dirent_t	*v;		/* list */
55	char		*rootdir;	/* root directory of virtual fs */
56	struct stat	 file;		/* stat struct for file entries */
57	struct stat	 dir;		/* stat struct for dir entries */
58	struct stat	 lnk;		/* stat struct for symlinks */
59} virtdir_t;
60
61/* this struct is used to walk through directories */
62typedef struct VIRTDIR {
63	char		*dirname;	/* directory name */
64	int		 dirnamelen;	/* length of directory name */
65	virtdir_t	*tp;		/* the directory tree */
66	unsigned	 i;		/* current offset in dir tree */
67} VIRTDIR;
68
69int virtdir_init(virtdir_t *, const char *, struct stat *, struct stat *, struct stat *);
70int virtdir_add(virtdir_t *, const char *, size_t, uint8_t, const char *, size_t);
71int virtdir_del(virtdir_t *, const char *, size_t);
72virt_dirent_t *virtdir_find(virtdir_t *, const char *, size_t);
73virt_dirent_t *virtdir_find_tgt(virtdir_t *, const char *, size_t);
74void virtdir_drop(virtdir_t *);
75char *virtdir_rootdir(virtdir_t *);
76
77VIRTDIR *openvirtdir(virtdir_t *, const char *);
78virt_dirent_t *readvirtdir(VIRTDIR *);
79void closevirtdir(VIRTDIR *);
80
81int virtdir_offset(virtdir_t *, virt_dirent_t *);
82
83#endif
84