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 */ 39 typedef 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 */ 51 typedef 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 */ 62 typedef struct VIRTDIR { 63 char *dirname; /* directory name */ 64 int dirnamelen; /* length of directory name */ 65 virtdir_t *tp; /* the directory tree */ 66 int i; /* current offset in dir tree */ 67 } VIRTDIR; 68 69 int virtdir_init(virtdir_t *, const char *, struct stat *, struct stat *, struct stat *); 70 int virtdir_add(virtdir_t *, const char *, size_t, uint8_t, const char *, size_t); 71 int virtdir_del(virtdir_t *, const char *, size_t); 72 virt_dirent_t *virtdir_find(virtdir_t *, const char *, size_t); 73 virt_dirent_t *virtdir_find_tgt(virtdir_t *, const char *, size_t); 74 void virtdir_drop(virtdir_t *); 75 char *virtdir_rootdir(virtdir_t *); 76 77 VIRTDIR *openvirtdir(virtdir_t *, const char *); 78 virt_dirent_t *readvirtdir(VIRTDIR *); 79 void closevirtdir(VIRTDIR *); 80 81 int virtdir_offset(virtdir_t *, virt_dirent_t *); 82 83 #endif 84