1 /**
2 * Copyright (c) 2008-2015 Alper Akcan <alper.akcan@gmail.com>
3 * Copyright (c) 2009 Renzo Davoli <renzo@cs.unibo.it>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program (in the main directory of the fuse-ext2
17 * distribution in the file COPYING); if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "fuse-ext2.h"
22
do_open(ext2_filsys e2fs,const char * path,int flags)23 ext2_file_t do_open (ext2_filsys e2fs, const char *path, int flags)
24 {
25 int rt;
26 errcode_t rc;
27 ext2_ino_t ino;
28 ext2_file_t efile;
29 struct ext2_inode inode;
30 struct fuse_context *cntx = fuse_get_context();
31 struct extfs_data *e2data = cntx->private_data;
32
33 debugf("enter");
34 debugf("path = %s", path);
35
36 rt = do_check(path);
37 if (rt != 0) {
38 debugf("do_check(%s); failed", path);
39 return NULL;
40 }
41
42 rt = do_readinode(e2fs, path, &ino, &inode);
43 if (rt) {
44 debugf("do_readinode(%s, &ino, &inode); failed", path);
45 return NULL;
46 }
47
48 rc = ext2fs_file_open2(
49 e2fs,
50 ino,
51 &inode,
52 (((flags & O_ACCMODE) != 0) ? EXT2_FILE_WRITE : 0) | EXT2_FILE_SHARED_INODE,
53 &efile);
54 if (rc) {
55 return NULL;
56 }
57
58 if (e2data->readonly == 0) {
59 inode.i_atime = e2fs->now ? e2fs->now : time(NULL);
60 rt = do_writeinode(e2fs, ino, &inode);
61 if (rt) {
62 debugf("do_writeinode(%s, &ino, &inode); failed", path);
63 return NULL;
64 }
65 }
66
67 debugf("leave");
68 return efile;
69 }
70
op_open(const char * path,struct fuse_file_info * fi)71 int op_open (const char *path, struct fuse_file_info *fi)
72 {
73 ext2_file_t efile;
74 ext2_filsys e2fs = current_ext2fs();
75
76 debugf("enter");
77 debugf("path = %s", path);
78
79 efile = do_open(e2fs, path, fi->flags);
80 if (efile == NULL) {
81 debugf("do_open(%s); failed", path);
82 return -ENOENT;
83 }
84 fi->fh = (uint64_t) efile;
85
86 debugf("leave");
87 return 0;
88 }
89