1 /* $NetBSD: ext2fs_subr.c,v 1.31 2015/03/28 19:24:04 maxv 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 1.31 2015/03/28 19:24:04 maxv 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
ext2fs_blkatoff(struct vnode * vp,off_t offset,char ** res,struct buf ** bpp)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
ext2fs_itimes(struct inode * ip,const struct timespec * acc,const struct timespec * mod,const struct timespec * cre)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 ip->i_e2fs_atime = acc->tv_sec;
119 }
120 if (ip->i_flag & (IN_UPDATE | IN_MODIFY)) {
121 if (mod == NULL)
122 mod = &now;
123 ip->i_e2fs_mtime = mod->tv_sec;
124 ip->i_modrev++;
125 }
126 if (ip->i_flag & (IN_CHANGE | IN_MODIFY)) {
127 if (cre == NULL)
128 cre = &now;
129 ip->i_e2fs_ctime = cre->tv_sec;
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