1 | /* $NetBSD: ext2fs_subr.c,v 1.33 2016/08/13 07:40:10 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1982, 1986, 1989, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the University nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | * @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93 |
32 | * Modified for ext2fs by Manuel Bouyer. |
33 | */ |
34 | |
35 | /* |
36 | * Copyright (c) 1997 Manuel Bouyer. |
37 | * |
38 | * Redistribution and use in source and binary forms, with or without |
39 | * modification, are permitted provided that the following conditions |
40 | * are met: |
41 | * 1. Redistributions of source code must retain the above copyright |
42 | * notice, this list of conditions and the following disclaimer. |
43 | * 2. Redistributions in binary form must reproduce the above copyright |
44 | * notice, this list of conditions and the following disclaimer in the |
45 | * documentation and/or other materials provided with the distribution. |
46 | * |
47 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
48 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
49 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
50 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
51 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
52 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
53 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
54 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
55 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
56 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
57 | * |
58 | * @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93 |
59 | * Modified for ext2fs by Manuel Bouyer. |
60 | */ |
61 | |
62 | #include <sys/cdefs.h> |
63 | __KERNEL_RCSID(0, "$NetBSD: ext2fs_subr.c,v 1.33 2016/08/13 07:40:10 christos Exp $" ); |
64 | |
65 | #include <sys/param.h> |
66 | #include <sys/systm.h> |
67 | #include <sys/vnode.h> |
68 | #include <sys/buf.h> |
69 | #include <sys/inttypes.h> |
70 | #include <sys/kauth.h> |
71 | |
72 | #include <ufs/ufs/inode.h> |
73 | #include <ufs/ext2fs/ext2fs.h> |
74 | #include <ufs/ext2fs/ext2fs_extern.h> |
75 | |
76 | /* |
77 | * Return buffer with the contents of block "offset" from the beginning of |
78 | * directory "ip". If "res" is non-zero, fill it in with a pointer to the |
79 | * remaining space in the directory. |
80 | */ |
81 | int |
82 | ext2fs_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp) |
83 | { |
84 | struct inode *ip; |
85 | struct m_ext2fs *fs; |
86 | struct buf *bp; |
87 | daddr_t lbn; |
88 | int error; |
89 | |
90 | ip = VTOI(vp); |
91 | fs = ip->i_e2fs; |
92 | lbn = ext2_lblkno(fs, offset); |
93 | |
94 | *bpp = NULL; |
95 | if ((error = bread(vp, lbn, fs->e2fs_bsize, 0, &bp)) != 0) { |
96 | return error; |
97 | } |
98 | if (res) |
99 | *res = (char *)bp->b_data + ext2_blkoff(fs, offset); |
100 | *bpp = bp; |
101 | return 0; |
102 | } |
103 | |
104 | void |
105 | ext2fs_itimes(struct inode *ip, const struct timespec *acc, |
106 | const struct timespec *mod, const struct timespec *cre) |
107 | { |
108 | struct timespec now; |
109 | |
110 | if (!(ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY))) { |
111 | return; |
112 | } |
113 | |
114 | vfs_timestamp(&now); |
115 | if (ip->i_flag & IN_ACCESS) { |
116 | if (acc == NULL) |
117 | acc = &now; |
118 | EXT2_DINODE_TIME_SET(acc, ip->i_din.e2fs_din, e2di_atime, EXT2_DINODE_SIZE(ip->i_e2fs)); |
119 | } |
120 | if (ip->i_flag & (IN_UPDATE | IN_MODIFY)) { |
121 | if (mod == NULL) |
122 | mod = &now; |
123 | EXT2_DINODE_TIME_SET(mod, ip->i_din.e2fs_din, e2di_mtime, EXT2_DINODE_SIZE(ip->i_e2fs)); |
124 | ip->i_modrev++; |
125 | } |
126 | if (ip->i_flag & (IN_CHANGE | IN_MODIFY)) { |
127 | if (cre == NULL) |
128 | cre = &now; |
129 | EXT2_DINODE_TIME_SET(cre, ip->i_din.e2fs_din, e2di_ctime, EXT2_DINODE_SIZE(ip->i_e2fs)); |
130 | } |
131 | if (ip->i_flag & (IN_ACCESS | IN_MODIFY)) |
132 | ip->i_flag |= IN_ACCESSED; |
133 | if (ip->i_flag & (IN_UPDATE | IN_CHANGE)) |
134 | ip->i_flag |= IN_MODIFIED; |
135 | ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); |
136 | } |
137 | |