/* $OpenBSD: ffs_vfsops.c,v 1.109 2007/08/04 03:33:31 art Exp $ */
/* $NetBSD: ffs_vfsops.c,v 1.19 1996/02/09 22:22:26 christos Exp $ */
/*
* Copyright (c) 1989, 1991, 1993, 1994
* 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_vfsops.c 8.14 (Berkeley) 11/28/94
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/vnode.h>
#include <sys/socket.h>
#include <sys/mount.h>
#include <sys/buf.h>
#include <sys/mbuf.h>
#include <sys/file.h>
#include <sys/disklabel.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/sysctl.h>
#include <sys/pool.h>
#include <dev/rndvar.h>
#include <miscfs/specfs/specdev.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/ufsmount.h>
#include <ufs/ufs/inode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ufs/ufs_extern.h>
#include <ufs/ufs/dirhash.h>
#include <ufs/ffs/fs.h>
#include <ufs/ffs/ffs_extern.h>
int ffs_sbupdate(struct ufsmount *, int);
int ffs_reload_vnode(struct vnode *, void *);
int ffs_sync_vnode(struct vnode *, void *);
int ffs_validate(struct fs *);
void ffs1_compat_read(struct fs *, struct ufsmount *, daddr64_t);
void ffs1_compat_write(struct fs *, struct ufsmount *);
const struct vfsops ffs_vfsops = {
ffs_mount,
ufs_start,
ffs_unmount,
ufs_root,
ufs_quotactl,
ffs_statfs,
ffs_sync,
ffs_vget,
ffs_fhtovp,
ffs_vptofh,
ffs_init,
ffs_sysctl,
ufs_check_export
};
struct inode_vtbl ffs_vtbl = {
ffs_truncate,
ffs_update,
ffs_inode_alloc,
ffs_inode_free,
ffs_balloc,
ffs_bufatoff
};
/*
* Called by main() when ufs is going to be mounted as root.
*/
struct pool ffs_ino_pool;
struct pool ffs_dinode1_pool;
#ifdef FFS2
struct pool ffs_dinode2_pool;
#endif
int
ffs_mountroot(void)
{
struct fs *fs;
struct mount *mp;
struct proc *p = curproc; /* XXX */
struct ufsmount *ump;
int error;
/*
* Get vnodes for swapdev and rootdev.
*/
swapdev_vp = NULL;
if ((error = bdevvp(swapdev, &swapdev_vp)) ||
(error = bdevvp(rootdev, &rootvp))) {
printf("ffs_mountroot: can't setup bdevvp's\n");
if (swapdev_vp)
vrele(swapdev_vp);
return (error);
}
if ((error = vfs_rootmountalloc("ffs", "root_device", &mp)) != 0) {
vrele(swapdev_vp);
vrele(rootvp);
return (error);
}
if ((error = ffs_mountfs(rootvp, mp, p)) != 0) {
mp->mnt_vfc->vfc_refcount--;
vfs_unbusy(mp);
free(mp, M_MOUNT);
vrele(swapdev_vp);
vrele(rootvp);
return (error);
}
CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
ump = VFSTOUFS(mp);
fs = ump->um_fs;
(void) copystr(mp->mnt_stat.f_mntonname, fs->fs_fsmnt, MNAMELEN - 1, 0);
(void)ffs_statfs(mp, &mp->mnt_stat, p);
vfs_unbusy(mp);
inittodr(fs->fs_time);
return (0);
}
/*
* VFS Operations.
*
* mount system call
*/
int
ffs_mount(struct mount *mp, const char *path, void *data,
struct nameidata *ndp, struct proc *p)
{
struct vnode *devvp;
struct ufs_args args;
struct ufsmount *ump = NULL;
struct fs *fs;
int error = 0, flags;
int ronly;
mode_t accessmode;
size_t size;
error = copyin(data, &args, sizeof (struct ufs_args));
if (error)
return (error);
#ifndef FFS_SOFTUPDATES
if (mp->mnt_flag & MNT_SOFTDEP) {
printf("WARNING: soft updates isn't compiled in\n");
mp->mnt_flag &= ~MNT_SOFTDEP;
}
#endif
/*
* Soft updates is incompatible with "async",
* so if we are doing softupdates stop the user
* from setting the async flag.
*/
if ((mp->mnt_flag & (MNT_SOFTDEP | MNT_ASYNC)) ==
(MNT_SOFTDEP | MNT_ASYNC)) {
return (EINVAL);
}
/*
* If updating, check whether changing from read-only to
* read/write; if there is no device name, that's all we do.
*/
if (mp->mnt_flag & MNT_UPDATE) {
ump = VFSTOUFS(mp);
fs = ump->um_fs;
devvp = ump->um_devvp;
error = 0;
ronly = fs->fs_ronly;
if (ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
/* Flush any dirty data */
mp->mnt_flag &= ~MNT_RDONLY;
VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p);
mp->mnt_flag |= MNT_RDONLY;
/*
* Get rid of files open for writing.
*/
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
if (fs->fs_flags & FS_DOSOFTDEP) {
error = softdep_flushfiles(mp, flags, p);
mp->mnt_flag &= ~MNT_SOFTDEP;
} else
error = ffs_flushfiles(mp, flags, p);
ronly = 1;
}
/*
* Flush soft dependencies if disabling it via an update
* mount. This may leave some items to be processed,
* so don't do this yet XXX.
*/
if ((fs->fs_flags & FS_DOSOFTDEP) &&
!(mp->mnt_flag & MNT_SOFTDEP) &&
!(mp->mnt_flag & MNT_RDONLY) && fs->fs_ronly == 0) {
#if 0
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
error = softdep_flushfiles(mp, flags, p);
#elif FFS_SOFTUPDATES
mp->mnt_flag |= MNT_SOFTDEP;
#endif
}
/*
* When upgrading to a softdep mount, we must first flush
* all vnodes. (not done yet -- see above)
*/
if (!(fs->fs_flags & FS_DOSOFTDEP) &&
(mp->mnt_flag & MNT_SOFTDEP) && fs->fs_ronly == 0) {
#if 0
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
error = ffs_flushfiles(mp, flags, p);
#else
mp->mnt_flag &= ~MNT_SOFTDEP;
#endif
}
if (!error && (mp->mnt_flag & MNT_RELOAD))
error = ffs_reload(mp, ndp->ni_cnd.cn_cred, p);
if (error)
goto error_1;
if (ronly && (mp->mnt_flag & MNT_WANTRDWR)) {
/*
* If upgrade to read-write by non-root, then verify
* that user has necessary permissions on the device.
*/
if (suser(p, 0)) {
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = VOP_ACCESS(devvp, VREAD | VWRITE,
p->p_ucred, p);
VOP_UNLOCK(devvp, 0, p);
if (error)
goto error_1;
}
if (fs->fs_clean == 0) {
#if 0
/*
* It is safe mount unclean file system
* if it was previously mounted with softdep
* but we may loss space and must
* sometimes run fsck manually.
*/
if (fs->fs_flags & FS_DOSOFTDEP)
printf(
"WARNING: %s was not properly unmounted\n",
fs->fs_fsmnt);
else
#endif
if (mp->mnt_flag & MNT_FORCE) {
printf(
"WARNING: %s was not properly unmounted\n",
fs->fs_fsmnt);
} else {
printf(
"WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n",
fs->fs_fsmnt);
error = EROFS;
goto error_1;
}
}
if ((fs->fs_flags & FS_DOSOFTDEP)) {
error = softdep_mount(devvp, mp, fs,
p->p_ucred);
if (error)
goto error_1;
}
fs->fs_contigdirs=(u_int8_t*)malloc((u_long)fs->fs_ncg,
M_UFSMNT, M_WAITOK);
bzero(fs->fs_contigdirs, fs->fs_ncg);
ronly = 0;
}
if (args.fspec == 0) {
/*
* Process export requests.
*/
error = vfs_export(mp, &ump->um_export,
&args.export_info);
if (error)
goto error_1;
else
goto success;
}
}
/*
* Not an update, or updating the name: look up the name
* and verify that it refers to a sensible block device.
*/
NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
if ((error = namei(ndp)) != 0)
goto error_1;
devvp = ndp->ni_vp;
if (devvp->v_type != VBLK) {
error = ENOTBLK;
goto error_2;
}
if (major(devvp->v_rdev) >= nblkdev) {
error = ENXIO;
goto error_2;
}
/*
* If mount by non-root, then verify that user has necessary
* permissions on the device.
*/
if (suser(p, 0)) {
accessmode = VREAD;
if ((mp->mnt_flag & MNT_RDONLY) == 0)
accessmode |= VWRITE;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p);
VOP_UNLOCK(devvp, 0, p);
if (error)
goto error_2;
}
if (mp->mnt_flag & MNT_UPDATE) {
/*
* UPDATE
* If it's not the same vnode, or at least the same device
* then it's not correct.
*/
if (devvp != ump->um_devvp) {
if (devvp->v_rdev == ump->um_devvp->v_rdev) {
vrele(devvp);
} else {
error = EINVAL; /* needs translation */
}
} else
vrele(devvp);
/*
* Update device name only on success
*/
if (!error) {
/*
* Save "mounted from" info for mount point (NULL pad)
*/
copyinstr(args.fspec,
mp->mnt_stat.f_mntfromname,
MNAMELEN - 1,
&size);
bzero(mp->mnt_stat.f_mntfromname + size,
MNAMELEN - size);
}
} else {
/*
* Since this is a new mount, we want the names for
* the device and the mount point copied in. If an
* error occurs, the mountpoint is discarded by the
* upper level code.
*/
/* Save "last mounted on" info for mount point (NULL pad)*/
copyinstr(path, /* mount point*/
mp->mnt_stat.f_mntonname, /* save area*/
MNAMELEN - 1, /* max size*/
&size); /* real size*/
bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
/* Save "mounted from" info for mount point (NULL pad)*/
copyinstr(args.fspec, /* device name*/
mp->mnt_stat.f_mntfromname, /* save area*/
MNAMELEN - 1, /* max size*/
&size); /* real size*/
bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
error = ffs_mountfs(devvp, mp, p);
}
if (error)
goto error_2;
/*
* Initialize FS stat information in mount struct; uses both
* mp->mnt_stat.f_mntonname and mp->mnt_stat.f_mntfromname
*
* This code is common to root and non-root mounts
*/
bcopy(&args, &mp->mnt_stat.mount_info.ufs_args, sizeof(args));
(void)VFS_STATFS(mp, &mp->mnt_stat, p);
success:
if (path && (mp->mnt_flag & MNT_UPDATE)) {
/* Update clean flag after changing read-onlyness. */
fs = ump->um_fs;
if (ronly != fs->fs_ronly) {
fs->fs_ronly = ronly;
fs->fs_clean = ronly &&
(fs->fs_flags & FS_UNCLEAN) == 0 ? 1 : 0;
if (ronly)
free(fs->fs_contigdirs, M_UFSMNT);
}
if (!ronly) {
if (mp->mnt_flag & MNT_SOFTDEP)
fs->fs_flags |= FS_DOSOFTDEP;
else
fs->fs_flags &= ~FS_DOSOFTDEP;
}
ffs_sbupdate(ump, MNT_WAIT);
}
return (0);
error_2: /* error with devvp held */
vrele (devvp);
error_1: /* no state to back out */
return (error);
}
struct ffs_reload_args {
struct fs *fs;
struct proc *p;
struct ucred *cred;
struct vnode *devvp;
};
int
ffs_reload_vnode(struct vnode *vp, void *args)
{
struct ffs_reload_args *fra = args;
struct inode *ip;
struct buf *bp;
int error;
/*
* Step 4: invalidate all inactive vnodes.
*/
if (vp->v_usecount == 0) {
vgonel(vp, fra->p);
return (0);
}
/*
* Step 5: invalidate all cached file data.
*/
if (vget(vp, LK_EXCLUSIVE, fra->p))
return (0);
if (vinvalbuf(vp, 0, fra->cred, fra->p, 0, 0))
panic("ffs_reload: dirty2");
/*
* Step 6: re-read inode data for all active vnodes.
*/
ip = VTOI(vp);
error = bread(fra->devvp,
fsbtodb(fra->fs, ino_to_fsba(fra->fs, ip->i_number)),
(int)fra->fs->fs_bsize, NOCRED, &bp);
if (error) {
brelse(bp);
vput(vp);
return (error);
}
*ip->i_din1 = *((struct ufs1_dinode *)bp->b_data +
ino_to_fsbo(fra->fs, ip->i_number));
ip->i_effnlink = DIP(ip, nlink);
brelse(bp);
vput(vp);
return (0);
}
/*
* Reload all incore data for a filesystem (used after running fsck on
* the root filesystem and finding things to fix). The filesystem must
* be mounted read-only.
*
* Things to do to update the mount:
* 1) invalidate all cached meta-data.
* 2) re-read superblock from disk.
* 3) re-read summary information from disk.
* 4) invalidate all inactive vnodes.
* 5) invalidate all cached file data.
* 6) re-read inode data for all active vnodes.
*/
int
ffs_reload(struct mount *mountp, struct ucred *cred, struct proc *p)
{
struct vnode *devvp;
caddr_t space;
struct fs *fs, *newfs;
struct partinfo dpart;
int i, blks, size, error;
int32_t *lp;
struct buf *bp = NULL;
struct ffs_reload_args fra;
if ((mountp->mnt_flag & MNT_RDONLY) == 0)
return (EINVAL);
/*
* Step 1: invalidate all cached meta-data.
*/
devvp = VFSTOUFS(mountp)->um_devvp;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = vinvalbuf(devvp, 0, cred, p, 0, 0);
VOP_UNLOCK(devvp, 0, p);
if (error)
panic("ffs_reload: dirty1");
/*
* Step 2: re-read superblock from disk.
*/
if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED, p) != 0)
size = DEV_BSIZE;
else
size = dpart.disklab->d_secsize;
fs = VFSTOUFS(mountp)->um_fs;
error = bread(devvp, (daddr_t)(fs->fs_sblockloc / size), SBSIZE,
NOCRED, &bp);
if (error) {
brelse(bp);
return (error);
}
newfs = (struct fs *)bp->b_data;
if (ffs_validate(newfs) == 0) {
brelse(bp);
return (EINVAL);
}
/*
* Copy pointer fields back into superblock before copying in XXX
* new superblock. These should really be in the ufsmount. XXX
* Note that important parameters (eg fs_ncg) are unchanged.
*/
newfs->fs_csp = fs->fs_csp;
newfs->fs_maxcluster = fs->fs_maxcluster;
newfs->fs_ronly = fs->fs_ronly;
bcopy(newfs, fs, (u_int)fs->fs_sbsize);
if (fs->fs_sbsize < SBSIZE)
bp->b_flags |= B_INVAL;
brelse(bp);
mountp->mnt_maxsymlinklen = fs->fs_maxsymlinklen;
ffs1_compat_read(fs, VFSTOUFS(mountp), fs->fs_sblockloc);
ffs_oldfscompat(fs);
(void)ffs_statfs(mountp, &mountp->mnt_stat, p);
/*
* Step 3: re-read summary information from disk.
*/
blks = howmany(fs->fs_cssize, fs->fs_fsize);
space = (caddr_t)fs->fs_csp;
for (i = 0; i < blks; i += fs->fs_frag) {
size = fs->fs_bsize;
if (i + fs->fs_frag > blks)
size = (blks - i) * fs->fs_fsize;
error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size,
NOCRED, &bp);
if (error) {
brelse(bp);
return (error);
}
bcopy(bp->b_data, space, (u_int)size);
space += size;
brelse(bp);
}
if ((fs->fs_flags & FS_DOSOFTDEP))
(void) softdep_mount(devvp, mountp, fs, cred);
/*
* We no longer know anything about clusters per cylinder group.
*/
if (fs->fs_contigsumsize > 0) {
lp = fs->fs_maxcluster;
for (i = 0; i < fs->fs_ncg; i++)
*lp++ = fs->fs_contigsumsize;
}
fra.p = p;
fra.cred = cred;
fra.fs = fs;
fra.devvp = devvp;
error = vfs_mount_foreach_vnode(mountp, ffs_reload_vnode, &fra);
return (error);
}
/*
* Checks if a super block is sane enough to be mounted.
*/
int
ffs_validate(struct fs *fsp)
{
#ifdef FFS2
if (fsp->fs_magic != FS_UFS2_MAGIC && fsp->fs_magic != FS_UFS1_MAGIC)
return (0); /* Invalid magic */
#else
if (fsp->fs_magic != FS_UFS1_MAGIC)
return (0); /* Invalid magic */
#endif /* FFS2 */
if ((u_int)fsp->fs_bsize > MAXBSIZE)
return (0); /* Invalid block size */
if ((u_int)fsp->fs_bsize < sizeof(struct fs))
return (0); /* Invalid block size */
if ((u_int)fsp->fs_sbsize > SBSIZE)
return (0); /* Invalid super block size */
if ((u_int)fsp->fs_frag > MAXFRAG || fragtbl[fsp->fs_frag] == NULL)
return (0); /* Invalid number of fragments */
return (1); /* Super block is okay */
}
/*
* Possible locations for the super-block.
*/
const int sbtry[] = SBLOCKSEARCH;
/*
* Common code for mount and mountroot
*/
int
ffs_mountfs(struct vnode *devvp, struct mount *mp, struct proc *p)
{
struct ufsmount *ump;
struct buf *bp;
struct fs *fs;
dev_t dev;
struct partinfo dpart;
caddr_t space;
daddr64_t sbloc;
int error, i, blks, size, ronly;
int32_t *lp;
size_t strsize;
struct ucred *cred;
u_int64_t maxfilesize; /* XXX */
dev = devvp->v_rdev;
cred = p ? p->p_ucred : NOCRED;
/*
* Disallow multiple mounts of the same device.
* Disallow mounting of a device that is currently in use
* (except for root, which might share swap device for miniroot).
* Flush out any old buffers remaining from a previous use.
*/
if ((error = vfs_mountedon(devvp)) != 0)
return (error);
if (vcount(devvp) > 1 && devvp != rootvp)
return (EBUSY);
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = vinvalbuf(devvp, V_SAVE, cred, p, 0, 0);
VOP_UNLOCK(devvp, 0, p);
if (error)
return (error);
ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p);
if (error)
return (error);
if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, cred, p) != 0)
size = DEV_BSIZE;
else
size = dpart.disklab->d_secsize;
bp = NULL;
ump = NULL;
/*
* Try reading the super-block in each of its possible locations.
*/
for (i = 0; sbtry[i] != -1; i++) {
if (bp != NULL) {
bp->b_flags |= B_NOCACHE;
brelse(bp);
bp = NULL;
}
error = bread(devvp, sbtry[i] / size, SBSIZE, cred, &bp);
if (error)
goto out;
fs = (struct fs *) bp->b_data;
sbloc = sbtry[i];
#if 0
if (fs->fs_magic == FS_UFS2_MAGIC) {
printf("ffs_mountfs(): Sorry, no UFS2 support (yet)\n");
error = EFTYPE;
goto out;
}
#endif
/*
* Do not look for an FFS1 file system at SBLOCK_UFS2. Doing so
* will find the wrong super-block for file systems with 64k
* block size.
*/
if (fs->fs_magic == FS_UFS1_MAGIC && sbloc == SBLOCK_UFS2)
continue;
if (ffs_validate(fs))
break; /* Super block validated */
}
if (sbtry[i] == -1) {
error = EINVAL;
goto out;
}
fs->fs_fmod = 0;
fs->fs_flags &= ~FS_UNCLEAN;
if (fs->fs_clean == 0) {
#if 0
/*
* It is safe mount unclean file system
* if it was previously mounted with softdep
* but we may loss space and must
* sometimes run fsck manually.
*/
if (fs->fs_flags & FS_DOSOFTDEP)
printf(
"WARNING: %s was not properly unmounted\n",
fs->fs_fsmnt);
else
#endif
if (ronly || (mp->mnt_flag & MNT_FORCE)) {
printf(
"WARNING: %s was not properly unmounted\n",
fs->fs_fsmnt);
} else {
printf(
"WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck\n",
fs->fs_fsmnt);
error = EROFS;
goto out;
}
}
if (fs->fs_postblformat == FS_42POSTBLFMT && !ronly) {
#ifndef SMALL_KERNEL
printf("ffs_mountfs(): obsolete rotational table format, "
"please use fsck_ffs(8) -c 1\n");
#endif
error = EFTYPE;
goto out;
}
ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK);
bzero(ump, sizeof *ump);
ump->um_fs = malloc((u_long)fs->fs_sbsize, M_UFSMNT,
M_WAITOK);
if (fs->fs_magic == FS_UFS1_MAGIC)
ump->um_fstype = UM_UFS1;
#ifdef FFS2
else
ump->um_fstype = UM_UFS2;
#endif
bcopy(bp->b_data, ump->um_fs, (u_int)fs->fs_sbsize);
if (fs->fs_sbsize < SBSIZE)
bp->b_flags |= B_INVAL;
brelse(bp);
bp = NULL;
fs = ump->um_fs;
ffs1_compat_read(fs, ump, sbloc);
if (fs->fs_clean == 0)
fs->fs_flags |= FS_UNCLEAN;
fs->fs_ronly = ronly;
size = fs->fs_cssize;
blks = howmany(size, fs->fs_fsize);
if (fs->fs_contigsumsize > 0)
size += fs->fs_ncg * sizeof(int32_t);
space = malloc((u_long)size, M_UFSMNT, M_WAITOK);
fs->fs_csp = (struct csum *)space;
for (i = 0; i < blks; i += fs->fs_frag) {
size = fs->fs_bsize;
if (i + fs->fs_frag > blks)
size = (blks - i) * fs->fs_fsize;
error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size,
cred, &bp);
if (error) {
free(fs->fs_csp, M_UFSMNT);
goto out;
}
bcopy(bp->b_data, space, (u_int)size);
space += size;
brelse(bp);
bp = NULL;
}
if (fs->fs_contigsumsize > 0) {
fs->fs_maxcluster = lp = (int32_t *)space;
for (i = 0; i < fs->fs_ncg; i++)
*lp++ = fs->fs_contigsumsize;
}
mp->mnt_data = (qaddr_t)ump;
mp->mnt_stat.f_fsid.val[0] = (long)dev;
/* Use on-disk fsid if it exists, else fake it */
if (fs->fs_id[0] != 0 && fs->fs_id[1] != 0)
mp->mnt_stat.f_fsid.val[1] = fs->fs_id[1];
else
mp->mnt_stat.f_fsid.val[1] = mp->mnt_vfc->vfc_typenum;
mp->mnt_maxsymlinklen = fs->fs_maxsymlinklen;
mp->mnt_flag |= MNT_LOCAL;
ump->um_mountp = mp;
ump->um_dev = dev;
ump->um_devvp = devvp;
ump->um_nindir = fs->fs_nindir;
ump->um_bptrtodb = fs->fs_fsbtodb;
ump->um_seqinc = fs->fs_frag;
for (i = 0; i < MAXQUOTAS; i++)
ump->um_quotas[i] = NULLVP;
devvp->v_specmountpoint = mp;
ffs_oldfscompat(fs);
if (ronly)
fs->fs_contigdirs = NULL;
else {
fs->fs_contigdirs = (u_int8_t*)malloc((u_long)fs->fs_ncg,
M_UFSMNT, M_WAITOK);
bzero(fs->fs_contigdirs, fs->fs_ncg);
}
/*
* Set FS local "last mounted on" information (NULL pad)
*/
copystr(mp->mnt_stat.f_mntonname, /* mount point*/
fs->fs_fsmnt, /* copy area*/
sizeof(fs->fs_fsmnt) - 1, /* max size*/
&strsize); /* real size*/
bzero(fs->fs_fsmnt + strsize, sizeof(fs->fs_fsmnt) - strsize);
#if 0
if( mp->mnt_flag & MNT_ROOTFS) {
/*
* Root mount; update timestamp in mount structure.
* this will be used by the common root mount code
* to update the system clock.
*/
mp->mnt_time = fs->fs_time;
}
#endif
/*
* XXX
* Limit max file size. Even though ffs can handle files up to 16TB,
* we do limit the max file to 2^31 pages to prevent overflow of
* a 32-bit unsigned int. The buffer cache has its own checks but
* a little added paranoia never hurts.
*/
ump->um_savedmaxfilesize = fs->fs_maxfilesize; /* XXX */
maxfilesize = (u_int64_t)0x80000000 * MIN(PAGE_SIZE, fs->fs_bsize) - 1;
if (fs->fs_maxfilesize > maxfilesize) /* XXX */
fs->fs_maxfilesize = maxfilesize; /* XXX */
if (ronly == 0) {
if ((fs->fs_flags & FS_DOSOFTDEP) &&
(error = softdep_mount(devvp, mp, fs, cred)) != 0) {
free(fs->fs_csp, M_UFSMNT);
free(fs->fs_contigdirs, M_UFSMNT);
goto out;
}
fs->fs_fmod = 1;
fs->fs_clean = 0;
if (mp->mnt_flag & MNT_SOFTDEP)
fs->fs_flags |= FS_DOSOFTDEP;
else
fs->fs_flags &= ~FS_DOSOFTDEP;
(void) ffs_sbupdate(ump, MNT_WAIT);
}
return (0);
out:
devvp->v_specmountpoint = NULL;
if (bp)
brelse(bp);
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p);
if (ump) {
free(ump->um_fs, M_UFSMNT);
free(ump, M_UFSMNT);
mp->mnt_data = (qaddr_t)0;
}
return (error);
}
/*
* Sanity checks for old file systems.
*/
int
ffs_oldfscompat(struct fs *fs)
{
int i;
fs->fs_npsect = max(fs->fs_npsect, fs->fs_nsect); /* XXX */
fs->fs_interleave = max(fs->fs_interleave, 1); /* XXX */
if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */
fs->fs_nrpos = 8; /* XXX */
if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */
u_int64_t sizepb = fs->fs_bsize; /* XXX */
/* XXX */
fs->fs_maxfilesize = fs->fs_bsize * NDADDR - 1; /* XXX */
for (i = 0; i < NIADDR; i++) { /* XXX */
sizepb *= NINDIR(fs); /* XXX */
fs->fs_maxfilesize += sizepb; /* XXX */
} /* XXX */
fs->fs_qbmask = ~fs->fs_bmask; /* XXX */
fs->fs_qfmask = ~fs->fs_fmask; /* XXX */
} /* XXX */
if (fs->fs_avgfilesize <= 0) /* XXX */
fs->fs_avgfilesize = AVFILESIZ; /* XXX */
if (fs->fs_avgfpdir <= 0) /* XXX */
fs->fs_avgfpdir = AFPDIR; /* XXX */
return (0);
}
/*
* Auxiliary function for reading FFS1 super blocks.
*/
void
ffs1_compat_read(struct fs *fs, struct ufsmount *ump, daddr64_t sbloc)
{
if (fs->fs_magic == FS_UFS2_MAGIC)
return; /* UFS2 */
#if 0
if (fs->fs_ffs1_flags & FS_FLAGS_UPDATED)
return; /* Already updated */
#endif
fs->fs_flags = fs->fs_ffs1_flags;
fs->fs_sblockloc = sbloc;
fs->fs_maxbsize = fs->fs_bsize;
fs->fs_time = fs->fs_ffs1_time;
fs->fs_size = fs->fs_ffs1_size;
fs->fs_dsize = fs->fs_ffs1_dsize;
fs->fs_csaddr = fs->fs_ffs1_csaddr;
fs->fs_cstotal.cs_ndir = fs->fs_ffs1_cstotal.cs_ndir;
fs->fs_cstotal.cs_nbfree = fs->fs_ffs1_cstotal.cs_nbfree;
fs->fs_cstotal.cs_nifree = fs->fs_ffs1_cstotal.cs_nifree;
fs->fs_cstotal.cs_nffree = fs->fs_ffs1_cstotal.cs_nffree;
fs->fs_ffs1_flags |= FS_FLAGS_UPDATED;
}
/*
* Auxiliary function for writing FFS1 super blocks.
*/
void
ffs1_compat_write(struct fs *fs, struct ufsmount *ump)
{
if (fs->fs_magic != FS_UFS1_MAGIC)
return; /* UFS2 */
fs->fs_ffs1_time = fs->fs_time;
fs->fs_ffs1_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir;
fs->fs_ffs1_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree;
fs->fs_ffs1_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree;
fs->fs_ffs1_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree;
}
/*
* unmount system call
*/
int
ffs_unmount(struct mount *mp, int mntflags, struct proc *p)
{
struct ufsmount *ump;
struct fs *fs;
int error, flags;
flags = 0;
if (mntflags & MNT_FORCE)
flags |= FORCECLOSE;
ump = VFSTOUFS(mp);
fs = ump->um_fs;
if (mp->mnt_flag & MNT_SOFTDEP)
error = softdep_flushfiles(mp, flags, p);
else
error = ffs_flushfiles(mp, flags, p);
if (error != 0)
return (error);
if (fs->fs_ronly == 0) {
fs->fs_clean = (fs->fs_flags & FS_UNCLEAN) ? 0 : 1;
error = ffs_sbupdate(ump, MNT_WAIT);
/* ignore write errors if mounted RW on read-only device */
if (error && error != EROFS) {
fs->fs_clean = 0;
return (error);
}
free(fs->fs_contigdirs, M_UFSMNT);
}
ump->um_devvp->v_specmountpoint = NULL;
vinvalbuf(ump->um_devvp, V_SAVE, NOCRED, p, 0, 0);
error = VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD|FWRITE,
NOCRED, p);
vrele(ump->um_devvp);
free(fs->fs_csp, M_UFSMNT);
free(fs, M_UFSMNT);
free(ump, M_UFSMNT);
mp->mnt_data = (qaddr_t)0;
mp->mnt_flag &= ~MNT_LOCAL;
return (error);
}
/*
* Flush out all the files in a filesystem.
*/
int
ffs_flushfiles(struct mount *mp, int flags, struct proc *p)
{
struct ufsmount *ump;
int error;
ump = VFSTOUFS(mp);
if (mp->mnt_flag & MNT_QUOTA) {
int i;
if ((error = vflush(mp, NULLVP, SKIPSYSTEM|flags)) != 0)
return (error);
for (i = 0; i < MAXQUOTAS; i++) {
if (ump->um_quotas[i] == NULLVP)
continue;
quotaoff(p, mp, i);
}
/*
* Here we fall through to vflush again to ensure
* that we have gotten rid of all the system vnodes.
*/
}
/*
* Flush all the files.
*/
if ((error = vflush(mp, NULL, flags)) != 0)
return (error);
/*
* Flush filesystem metadata.
*/
vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY, p);
error = VOP_FSYNC(ump->um_devvp, p->p_ucred, MNT_WAIT, p);
VOP_UNLOCK(ump->um_devvp, 0, p);
return (error);
}
/*
* Get file system statistics.
*/
int
ffs_statfs(struct mount *mp, struct statfs *sbp, struct proc *p)
{
struct ufsmount *ump;
struct fs *fs;
ump = VFSTOUFS(mp);
fs = ump->um_fs;
#ifdef FFS2
if (fs->fs_magic != FS_MAGIC && fs->fs_magic != FS_UFS2_MAGIC)
panic("ffs_statfs");
#else
if (fs->fs_magic != FS_MAGIC)
panic("ffs_statfs");
#endif /* FFS2 */
sbp->f_bsize = fs->fs_fsize;
sbp->f_iosize = fs->fs_bsize;
sbp->f_blocks = fs->fs_dsize;
sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag +
fs->fs_cstotal.cs_nffree;
sbp->f_bavail = sbp->f_bfree - ((int64_t)fs->fs_dsize * fs->fs_minfree / 100);
sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO;
sbp->f_ffree = fs->fs_cstotal.cs_nifree;
if (sbp != &mp->mnt_stat) {
bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
bcopy(&mp->mnt_stat.mount_info.ufs_args,
&sbp->mount_info.ufs_args, sizeof(struct ufs_args));
}
strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
return (0);
}
struct ffs_sync_args {
int allerror;
struct proc *p;
int waitfor;
struct ucred *cred;
};
int
ffs_sync_vnode(struct vnode *vp, void *arg) {
struct ffs_sync_args *fsa = arg;
struct inode *ip;
int error;
ip = VTOI(vp);
if (vp->v_type == VNON ||
((ip->i_flag &
(IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) == 0 &&
LIST_EMPTY(&vp->v_dirtyblkhd)) ) {
return (0);
}
if (vget(vp, LK_EXCLUSIVE | LK_NOWAIT, fsa->p))
return (0);
if ((error = VOP_FSYNC(vp, fsa->cred, fsa->waitfor, fsa->p)))
fsa->allerror = error;
VOP_UNLOCK(vp, 0, fsa->p);
vrele(vp);
return (0);
}
/*
* Go through the disk queues to initiate sandbagged IO;
* go through the inodes to write those that have been modified;
* initiate the writing of the super block if it has been modified.
*
* Should always be called with the mount point locked.
*/
int
ffs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct proc *p)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct fs *fs;
int error, allerror = 0, count;
struct ffs_sync_args fsa;
fs = ump->um_fs;
/*
* Write back modified superblock.
* Consistency check that the superblock
* is still in the buffer cache.
*/
if (fs->fs_fmod != 0 && fs->fs_ronly != 0) {
printf("fs = %s\n", fs->fs_fsmnt);
panic("update: rofs mod");
}
loop:
/*
* Write back each (modified) inode.
*/
fsa.allerror = 0;
fsa.p = p;
fsa.cred = cred;
fsa.waitfor = waitfor;
/*
* Don't traverse the vnode list if we want to skip all of them.
*/
if (waitfor != MNT_LAZY) {
vfs_mount_foreach_vnode(mp, ffs_sync_vnode, &fsa);
allerror = fsa.allerror;
}
/*
* Force stale file system control information to be flushed.
*/
if ((ump->um_mountp->mnt_flag & MNT_SOFTDEP) && waitfor == MNT_WAIT) {
if ((error = softdep_flushworklist(ump->um_mountp, &count, p)))
allerror = error;
/* Flushed work items may create new vnodes to clean */
if (count)
goto loop;
}
if (waitfor != MNT_LAZY) {
vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY, p);
if ((error = VOP_FSYNC(ump->um_devvp, cred, waitfor, p)) != 0)
allerror = error;
VOP_UNLOCK(ump->um_devvp, 0, p);
}
qsync(mp);
/*
* Write back modified superblock.
*/
if (fs->fs_fmod != 0 && (error = ffs_sbupdate(ump, waitfor)) != 0)
allerror = error;
return (allerror);
}
/*
* Look up a FFS dinode number to find its incore vnode, otherwise read it
* in from disk. If it is in core, wait for the lock bit to clear, then
* return the inode locked. Detection and handling of mount points must be
* done by the calling routine.
*/
int
ffs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
{
struct fs *fs;
struct inode *ip;
struct ufs1_dinode *dp1;
#ifdef FFS2
struct ufs2_dinode *dp2;
#endif
struct ufsmount *ump;
struct buf *bp;
struct vnode *vp;
dev_t dev;
int error;
ump = VFSTOUFS(mp);
dev = ump->um_dev;
retry:
if ((*vpp = ufs_ihashget(dev, ino)) != NULL)
return (0);
/* Allocate a new vnode/inode. */
if ((error = getnewvnode(VT_UFS, mp, ffs_vnodeop_p, &vp)) != 0) {
*vpp = NULL;
return (error);
}
#ifdef VFSDEBUG
vp->v_flag |= VLOCKSWORK;
#endif
/* XXX - we use the same pool for ffs and mfs */
ip = pool_get(&ffs_ino_pool, PR_WAITOK);
bzero((caddr_t)ip, sizeof(struct inode));
lockinit(&ip->i_lock, PINOD, "inode", 0, 0);
ip->i_ump = ump;
VREF(ip->i_devvp);
vp->v_data = ip;
ip->i_vnode = vp;
ip->i_fs = fs = ump->um_fs;
ip->i_dev = dev;
ip->i_number = ino;
ip->i_vtbl = &ffs_vtbl;
/*
* Put it onto its hash chain and lock it so that other requests for
* this inode will block if they arrive while we are sleeping waiting
* for old data structures to be purged or for the contents of the
* disk portion of this inode to be read.
*/
error = ufs_ihashins(ip);
if (error) {
/*
* VOP_INACTIVE will treat this as a stale file
* and recycle it quickly
*/
vrele(vp);
if (error == EEXIST)
goto retry;
return (error);
}
/* Read in the disk contents for the inode, copy into the inode. */
error = bread(ump->um_devvp, fsbtodb(fs, ino_to_fsba(fs, ino)),
(int)fs->fs_bsize, NOCRED, &bp);
if (error) {
/*
* The inode does not contain anything useful, so it would
* be misleading to leave it on its hash chain. With mode
* still zero, it will be unlinked and returned to the free
* list by vput().
*/
vput(vp);
brelse(bp);
*vpp = NULL;
return (error);
}
#ifdef FFS2
if (ip->i_ump->um_fstype == UM_UFS2) {
ip->i_din2 = pool_get(&ffs_dinode2_pool, PR_WAITOK);
dp2 = (struct ufs2_dinode *) bp->b_data + ino_to_fsbo(fs, ino);
*ip->i_din2 = *dp2;
} else
#endif
{
ip->i_din1 = pool_get(&ffs_dinode1_pool, PR_WAITOK);
dp1 = (struct ufs1_dinode *) bp->b_data + ino_to_fsbo(fs, ino);
*ip->i_din1 = *dp1;
}
brelse(bp);
if (DOINGSOFTDEP(vp))
softdep_load_inodeblock(ip);
else
ip->i_effnlink = DIP(ip, nlink);
/*
* Initialize the vnode from the inode, check for aliases.
* Note that the underlying vnode may have changed.
*/
error = ufs_vinit(mp, ffs_specop_p, FFS_FIFOOPS, &vp);
if (error) {
vput(vp);
*vpp = NULL;
return (error);
}
/*
* Set up a generation number for this inode if it does not
* already have one. This should only happen on old filesystems.
*/
if (DIP(ip, gen) == 0) {
DIP_ASSIGN(ip, gen, arc4random() & INT_MAX);
if (DIP(ip, gen) == 0 || DIP(ip, gen) == -1)
DIP_ASSIGN(ip, gen, 1); /* Shouldn't happen */
if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
ip->i_flag |= IN_MODIFIED;
}
/*
* Ensure that uid and gid are correct. This is a temporary
* fix until fsck has been changed to do the update.
*/
if (fs->fs_magic == FS_UFS1_MAGIC && fs->fs_inodefmt < FS_44INODEFMT) {
ip->i_ffs1_uid = ip->i_din1->di_ouid;
ip->i_ffs1_gid = ip->i_din1->di_ogid;
}
*vpp = vp;
return (0);
}
/*
* File handle to vnode
*
* Have to be really careful about stale file handles:
* - check that the inode number is valid
* - call ffs_vget() to get the locked inode
* - check for an unallocated inode (i_mode == 0)
*/
int
ffs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
{
struct ufid *ufhp;
struct fs *fs;
ufhp = (struct ufid *)fhp;
fs = VFSTOUFS(mp)->um_fs;
if (ufhp->ufid_ino < ROOTINO ||
ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg)
return (ESTALE);
return (ufs_fhtovp(mp, ufhp, vpp));
}
/*
* Vnode pointer to File handle
*/
/* ARGSUSED */
int
ffs_vptofh(struct vnode *vp, struct fid *fhp)
{
struct inode *ip;
struct ufid *ufhp;
ip = VTOI(vp);
ufhp = (struct ufid *)fhp;
ufhp->ufid_len = sizeof(struct ufid);
ufhp->ufid_ino = ip->i_number;
ufhp->ufid_gen = DIP(ip, gen);
return (0);
}
/*
* Write a superblock and associated information back to disk.
*/
int
ffs_sbupdate(struct ufsmount *mp, int waitfor)
{
struct fs *dfs, *fs = mp->um_fs;
struct buf *bp;
int blks;
caddr_t space;
int i, size, error, allerror = 0;
/*
* First write back the summary information.
*/
blks = howmany(fs->fs_cssize, fs->fs_fsize);
space = (caddr_t)fs->fs_csp;
for (i = 0; i < blks; i += fs->fs_frag) {
size = fs->fs_bsize;
if (i + fs->fs_frag > blks)
size = (blks - i) * fs->fs_fsize;
bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i),
size, 0, 0);
bcopy(space, bp->b_data, (u_int)size);
space += size;
if (waitfor != MNT_WAIT)
bawrite(bp);
else if ((error = bwrite(bp)))
allerror = error;
}
/*
* Now write back the superblock itself. If any errors occurred
* up to this point, then fail so that the superblock avoids
* being written out as clean.
*/
if (allerror) {
return (allerror);
}
bp = getblk(mp->um_devvp,
fs->fs_sblockloc >> (fs->fs_fshift - fs->fs_fsbtodb),
(int)fs->fs_sbsize, 0, 0);
fs->fs_fmod = 0;
fs->fs_time = time_second;
bcopy((caddr_t)fs, bp->b_data, (u_int)fs->fs_sbsize);
/* Restore compatibility to old file systems. XXX */
dfs = (struct fs *)bp->b_data; /* XXX */
if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */
dfs->fs_nrpos = -1; /* XXX */
if (fs->fs_inodefmt < FS_44INODEFMT) { /* XXX */
int32_t *lp, tmp; /* XXX */
/* XXX */
lp = (int32_t *)&dfs->fs_qbmask; /* XXX */
tmp = lp[4]; /* XXX */
for (i = 4; i > 0; i--) /* XXX */
lp[i] = lp[i-1]; /* XXX */
lp[0] = tmp; /* XXX */
} /* XXX */
dfs->fs_maxfilesize = mp->um_savedmaxfilesize; /* XXX */
ffs1_compat_write(dfs, mp);
if (waitfor != MNT_WAIT)
bawrite(bp);
else if ((error = bwrite(bp)))
allerror = error;
return (allerror);
}
int
ffs_init(struct vfsconf *vfsp)
{
static int done;
if (done)
return (0);
done = 1;
pool_init(&ffs_ino_pool, sizeof(struct inode), 0, 0, 0, "ffsino",
&pool_allocator_nointr);
pool_init(&ffs_dinode1_pool, sizeof(struct ufs1_dinode), 0, 0, 0,
"dino1pl", &pool_allocator_nointr);
#ifdef FFS2
pool_init(&ffs_dinode2_pool, sizeof(struct ufs2_dinode), 0, 0, 0,
"dino2pl", &pool_allocator_nointr);
#endif
softdep_initialize();
return (ufs_init(vfsp));
}
/*
* fast filesystem related variables.
*/
int
ffs_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen, struct proc *p)
{
extern int doclusterread, doclusterwrite, doreallocblks, doasyncfree;
#ifdef FFS_SOFTUPDATES
extern int max_softdeps, tickdelay, stat_worklist_push;
extern int stat_blk_limit_push, stat_ino_limit_push, stat_blk_limit_hit;
extern int stat_ino_limit_hit, stat_sync_limit_hit, stat_indir_blk_ptrs;
extern int stat_inode_bitmap, stat_direct_blk_ptrs, stat_dir_entry;
#endif
/* all sysctl names at this level are terminal */
if (namelen != 1)
return (ENOTDIR); /* overloaded */
switch (name[0]) {
case FFS_CLUSTERREAD:
return (sysctl_int(oldp, oldlenp, newp, newlen,
&doclusterread));
case FFS_CLUSTERWRITE:
return (sysctl_int(oldp, oldlenp, newp, newlen,
&doclusterwrite));
case FFS_REALLOCBLKS:
return (sysctl_int(oldp, oldlenp, newp, newlen,
&doreallocblks));
case FFS_ASYNCFREE:
return (sysctl_int(oldp, oldlenp, newp, newlen, &doasyncfree));
#ifdef FFS_SOFTUPDATES
case FFS_MAX_SOFTDEPS:
return (sysctl_int(oldp, oldlenp, newp, newlen, &max_softdeps));
case FFS_SD_TICKDELAY:
return (sysctl_int(oldp, oldlenp, newp, newlen, &tickdelay));
case FFS_SD_WORKLIST_PUSH:
return (sysctl_rdint(oldp, oldlenp, newp, stat_worklist_push));
case FFS_SD_BLK_LIMIT_PUSH:
return (sysctl_rdint(oldp, oldlenp, newp, stat_blk_limit_push));
case FFS_SD_INO_LIMIT_PUSH:
return (sysctl_rdint(oldp, oldlenp, newp, stat_ino_limit_push));
case FFS_SD_BLK_LIMIT_HIT:
return (sysctl_rdint(oldp, oldlenp, newp, stat_blk_limit_hit));
case FFS_SD_INO_LIMIT_HIT:
return (sysctl_rdint(oldp, oldlenp, newp, stat_ino_limit_hit));
case FFS_SD_SYNC_LIMIT_HIT:
return (sysctl_rdint(oldp, oldlenp, newp, stat_sync_limit_hit));
case FFS_SD_INDIR_BLK_PTRS:
return (sysctl_rdint(oldp, oldlenp, newp, stat_indir_blk_ptrs));
case FFS_SD_INODE_BITMAP:
return (sysctl_rdint(oldp, oldlenp, newp, stat_inode_bitmap));
case FFS_SD_DIRECT_BLK_PTRS:
return (sysctl_rdint(oldp, oldlenp, newp, stat_direct_blk_ptrs));
case FFS_SD_DIR_ENTRY:
return (sysctl_rdint(oldp, oldlenp, newp, stat_dir_entry));
#endif
#ifdef UFS_DIRHASH
case FFS_DIRHASH_DIRSIZE:
return (sysctl_int(oldp, oldlenp, newp, newlen,
&ufs_mindirhashsize));
case FFS_DIRHASH_MAXMEM:
return (sysctl_int(oldp, oldlenp, newp, newlen,
&ufs_dirhashmaxmem));
case FFS_DIRHASH_MEM:
return (sysctl_rdint(oldp, oldlenp, newp, ufs_dirhashmem));
#endif
default:
return (EOPNOTSUPP);
}
/* NOTREACHED */
}
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