1 /* $NetBSD: ext2fs_subr.c,v 1.26 2008/05/16 09:22:00 hannken 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 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Manuel Bouyer. 49 * 4. The name of the author may not be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 * @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93 64 * Modified for ext2fs by Manuel Bouyer. 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: ext2fs_subr.c,v 1.26 2008/05/16 09:22:00 hannken Exp $"); 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/vnode.h> 73 #include <sys/buf.h> 74 #include <sys/inttypes.h> 75 #include <sys/kauth.h> 76 77 #include <ufs/ufs/inode.h> 78 #include <ufs/ext2fs/ext2fs.h> 79 #include <ufs/ext2fs/ext2fs_extern.h> 80 81 /* 82 * Return buffer with the contents of block "offset" from the beginning of 83 * directory "ip". If "res" is non-zero, fill it in with a pointer to the 84 * remaining space in the directory. 85 */ 86 int 87 ext2fs_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp) 88 { 89 struct inode *ip; 90 struct m_ext2fs *fs; 91 struct buf *bp; 92 daddr_t lbn; 93 int error; 94 95 ip = VTOI(vp); 96 fs = ip->i_e2fs; 97 lbn = lblkno(fs, offset); 98 99 *bpp = NULL; 100 if ((error = bread(vp, lbn, fs->e2fs_bsize, NOCRED, 0, &bp)) != 0) { 101 brelse(bp, 0); 102 return (error); 103 } 104 if (res) 105 *res = (char *)bp->b_data + blkoff(fs, offset); 106 *bpp = bp; 107 return (0); 108 } 109 110 void 111 ext2fs_itimes(struct inode *ip, const struct timespec *acc, 112 const struct timespec *mod, const struct timespec *cre) 113 { 114 struct timespec now; 115 116 if (!(ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY))) { 117 return; 118 } 119 120 vfs_timestamp(&now); 121 if (ip->i_flag & IN_ACCESS) { 122 if (acc == NULL) 123 acc = &now; 124 ip->i_e2fs_atime = acc->tv_sec; 125 } 126 if (ip->i_flag & (IN_UPDATE | IN_MODIFY)) { 127 if (mod == NULL) 128 mod = &now; 129 ip->i_e2fs_mtime = mod->tv_sec; 130 ip->i_modrev++; 131 } 132 if (ip->i_flag & (IN_CHANGE | IN_MODIFY)) { 133 if (cre == NULL) 134 cre = &now; 135 ip->i_e2fs_ctime = cre->tv_sec; 136 } 137 if (ip->i_flag & (IN_ACCESS | IN_MODIFY)) 138 ip->i_flag |= IN_ACCESSED; 139 if (ip->i_flag & (IN_UPDATE | IN_CHANGE)) 140 ip->i_flag |= IN_MODIFIED; 141 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY); 142 } 143