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ext2fs_subr.c
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ext2fs_subr.c
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/* $NetBSD: ext2fs_subr.c,v 1.31 2015/03/28 19:24:04 maxv Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93
* Modified for ext2fs by Manuel Bouyer.
*/
/*
* Copyright (c) 1997 Manuel Bouyer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @(#)ffs_subr.c 8.2 (Berkeley) 9/21/93
* Modified for ext2fs by Manuel Bouyer.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ext2fs_subr.c,v 1.31 2015/03/28 19:24:04 maxv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/vnode.h>
#include <sys/buf.h>
#include <sys/inttypes.h>
#include <sys/kauth.h>
#include <ufs/ufs/inode.h>
#include <ufs/ext2fs/ext2fs.h>
#include <ufs/ext2fs/ext2fs_extern.h>
/*
* Return buffer with the contents of block "offset" from the beginning of
* directory "ip". If "res" is non-zero, fill it in with a pointer to the
* remaining space in the directory.
*/
int
ext2fs_blkatoff(struct vnode *vp, off_t offset, char **res, struct buf **bpp)
{
// printf("In file: %s, fun: %s,lineno: %d\n",__FILE__, __func__, __LINE__);
struct inode *ip;
struct m_ext2fs *fs;
struct buf *bp;
daddr_t lbn;
int error;
ip = VTOI(vp);
fs = ip->i_e2fs;
lbn = ext2_lblkno(fs, offset);
*bpp = NULL;
if ((error = bread(vp, lbn, fs->e2fs_bsize, 0, &bp)) != 0) {
return (error);
}
if (res)
*res = (char *)bp->b_data + ext2_blkoff(fs, offset);
*bpp = bp;
return (0);
}
void
ext2fs_itimes(struct inode *ip, const struct timespec *acc,
const struct timespec *mod, const struct timespec *cre)
{
// printf("In file: %s, fun: %s,lineno: %d\n",__FILE__, __func__, __LINE__);
struct timespec now;
if (!(ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY))) {
return;
}
vfs_timestamp(&now);
if (ip->i_flag & IN_ACCESS) {
if (acc == NULL)
acc = &now;
ip->i_e2fs_atime = acc->tv_sec;
}
if (ip->i_flag & (IN_UPDATE | IN_MODIFY)) {
if (mod == NULL)
mod = &now;
ip->i_e2fs_mtime = mod->tv_sec;
ip->i_modrev++;
}
if (ip->i_flag & (IN_CHANGE | IN_MODIFY)) {
if (cre == NULL)
cre = &now;
ip->i_e2fs_ctime = cre->tv_sec;
}
if (ip->i_flag & (IN_ACCESS | IN_MODIFY))
ip->i_flag |= IN_ACCESSED;
if (ip->i_flag & (IN_UPDATE | IN_CHANGE))
ip->i_flag |= IN_MODIFIED;
ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY);
}