freebsd-dev/lib/libufs/inode.c
Konstantin Belousov d485c77f20 Remove #define _KERNEL hacks from libprocstat
Make sys/buf.h, sys/pipe.h, sys/fs/devfs/devfs*.h headers usable in
userspace, assuming that the consumer has an idea what it is for.
Unhide more material from sys/mount.h and sys/ufs/ufs/inode.h,
sys/ufs/ufs/ufsmount.h for consumption of userspace tools, with the
same caveat.

Remove unacceptable hack from usr.sbin/makefs which relied on sys/buf.h
being unusable in userspace, where it override struct buf with its own
definition.  Instead, provide struct m_buf and struct m_vnode and adapt
code to use local variants.

Reviewed by:	mckusick
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D28679
2021-02-21 11:38:21 +02:00

123 lines
3.5 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2002 Juli Mallett. All rights reserved.
*
* This software was written by Juli Mallett <jmallett@FreeBSD.org> for the
* FreeBSD project. Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistribution of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistribution 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/disklabel.h>
#include <sys/stat.h>
#include <ufs/ufs/extattr.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ffs/fs.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libufs.h>
int
getinode(struct uufsd *disk, union dinodep *dp, ino_t inum)
{
ino_t min, max;
caddr_t inoblock;
struct fs *fs;
ERROR(disk, NULL);
fs = &disk->d_fs;
if (inum >= (ino_t)fs->fs_ipg * fs->fs_ncg) {
ERROR(disk, "inode number out of range");
return (-1);
}
inoblock = disk->d_inoblock;
min = disk->d_inomin;
max = disk->d_inomax;
if (inoblock == NULL) {
inoblock = malloc(fs->fs_bsize);
if (inoblock == NULL) {
ERROR(disk, "unable to allocate inode block");
return (-1);
}
disk->d_inoblock = inoblock;
}
if (inum >= min && inum < max)
goto gotit;
bread(disk, fsbtodb(fs, ino_to_fsba(fs, inum)), inoblock,
fs->fs_bsize);
disk->d_inomin = min = inum - (inum % INOPB(fs));
disk->d_inomax = max = min + INOPB(fs);
gotit: switch (disk->d_ufs) {
case 1:
disk->d_dp.dp1 = &((struct ufs1_dinode *)inoblock)[inum - min];
if (dp != NULL)
*dp = disk->d_dp;
return (0);
case 2:
disk->d_dp.dp2 = &((struct ufs2_dinode *)inoblock)[inum - min];
if (dp != NULL)
*dp = disk->d_dp;
if (ffs_verify_dinode_ckhash(fs, disk->d_dp.dp2) == 0)
return (0);
ERROR(disk, "check-hash failed for inode read from disk");
return (-1);
default:
break;
}
ERROR(disk, "unknown UFS filesystem type");
return (-1);
}
int
putinode(struct uufsd *disk)
{
struct fs *fs;
fs = &disk->d_fs;
if (disk->d_inoblock == NULL) {
ERROR(disk, "No inode block allocated");
return (-1);
}
if (disk->d_ufs == 2)
ffs_update_dinode_ckhash(fs, disk->d_dp.dp2);
if (bwrite(disk, fsbtodb(fs, ino_to_fsba(&disk->d_fs, disk->d_inomin)),
disk->d_inoblock, disk->d_fs.fs_bsize) <= 0)
return (-1);
return (0);
}