138 lines
4.8 KiB
C
138 lines
4.8 KiB
C
/* $NetBSD: ext2fs_subr.c,v 1.27 2009/10/19 18:41:17 bouyer Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93
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* Modified for ext2fs by Manuel Bouyer.
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*/
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/*
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* Copyright (c) 1997 Manuel Bouyer.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93
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* Modified for ext2fs by Manuel Bouyer.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ext2fs_subr.c,v 1.27 2009/10/19 18:41:17 bouyer Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/vnode.h>
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#include <sys/buf.h>
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#include <sys/inttypes.h>
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#include <sys/kauth.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ext2fs/ext2fs.h>
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#include <ufs/ext2fs/ext2fs_extern.h>
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/*
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* Return buffer with the contents of block "offset" from the beginning of
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* directory "ip". If "res" is non-zero, fill it in with a pointer to the
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* remaining space in the directory.
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*/
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int
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ext2fs_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp)
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{
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struct inode *ip;
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struct m_ext2fs *fs;
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struct buf *bp;
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daddr_t lbn;
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int error;
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ip = VTOI(vp);
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fs = ip->i_e2fs;
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lbn = lblkno(fs, offset);
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*bpp = NULL;
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if ((error = bread(vp, lbn, fs->e2fs_bsize, NOCRED, 0, &bp)) != 0) {
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brelse(bp, 0);
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return (error);
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}
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if (res)
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*res = (char *)bp->b_data + blkoff(fs, offset);
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*bpp = bp;
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return (0);
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}
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void
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ext2fs_itimes(struct inode *ip, const struct timespec *acc,
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const struct timespec *mod, const struct timespec *cre)
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{
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struct timespec now;
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if (!(ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY))) {
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return;
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}
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vfs_timestamp(&now);
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if (ip->i_flag & IN_ACCESS) {
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if (acc == NULL)
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acc = &now;
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ip->i_e2fs_atime = acc->tv_sec;
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}
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if (ip->i_flag & (IN_UPDATE | IN_MODIFY)) {
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if (mod == NULL)
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mod = &now;
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ip->i_e2fs_mtime = mod->tv_sec;
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ip->i_modrev++;
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}
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if (ip->i_flag & (IN_CHANGE | IN_MODIFY)) {
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if (cre == NULL)
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cre = &now;
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ip->i_e2fs_ctime = cre->tv_sec;
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}
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if (ip->i_flag & (IN_ACCESS | IN_MODIFY))
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ip->i_flag |= IN_ACCESSED;
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if (ip->i_flag & (IN_UPDATE | IN_CHANGE))
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ip->i_flag |= IN_MODIFIED;
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ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY);
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}
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