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
Indexes created Sat Sep 20 22:09:52 GMT 2025