int
ffs_wapbl_stop(struct mount *mp, int force)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct fs *fs = ump->um_fs;
int error;
if (mp->mnt_wapbl) {
KDASSERT(fs->fs_ronly == 0);
/*
* Make sure turning off FS_DOWAPBL is only removed
* as the only change in the final flush since otherwise
* a transaction may reorder writes.
*/
error = wapbl_flush(mp->mnt_wapbl, 1);
if (error && !force)
return error;
if (error && force)
goto forceout;
error = UFS_WAPBL_BEGIN(mp);
if (error && !force)
return error;
if (error && force)
goto forceout;
KASSERT(fs->fs_flags & FS_DOWAPBL);
fs->fs_flags &= ~FS_DOWAPBL;
error = ffs_sbupdate(ump, MNT_WAIT);
KASSERT(error == 0); /* XXX a bit drastic! */
UFS_WAPBL_END(mp);
forceout:
error = wapbl_stop(mp->mnt_wapbl, force);
if (error) {
KASSERT(!force);
fs->fs_flags |= FS_DOWAPBL;
return error;
}
fs->fs_flags &= ~FS_DOWAPBL; /* Repeat in case of forced error */
mp->mnt_wapbl = NULL;
#ifdef WAPBL_DEBUG
printf("%s: disabled logging\n", fs->fs_fsmnt);
#endif
}
return 0;
}
static int
g_journal_ufs_clean(struct mount *mp)
{
struct ufsmount *ump;
struct fs *fs;
int flags;
ump = VFSTOUFS(mp);
fs = ump->um_fs;
flags = fs->fs_flags;
fs->fs_flags &= ~(FS_UNCLEAN | FS_NEEDSFSCK);
ffs_sbupdate(ump, MNT_WAIT, 1);
fs->fs_flags = flags;
return (0);
}
/*
* 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;
vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY, p);
vinvalbuf(ump->um_devvp, V_SAVE, NOCRED, p, 0, 0);
error = VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD|FWRITE,
NOCRED, p);
VOP_UNLOCK(ump->um_devvp, 0, 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);
}
/*
* 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;
ufs2_daddr_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) {
fs->fs_flags |= FS_UNCLEAN;
#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);
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);
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY, p);
(void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p);
VOP_UNLOCK(devvp, 0, p);
if (ump) {
free(ump->um_fs, M_UFSMNT);
free(ump, M_UFSMNT);
mp->mnt_data = (qaddr_t)0;
}
return (error);
}
/*
* 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);
}
/*
* 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) {
if (ump->um_mountp->mnt_flag & MNT_SOFTDEP)
waitfor = MNT_NOWAIT;
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);
}
/*
* If the superblock doesn't already have a recorded journal location
* then we allocate the journal in one of two positions:
*
* - At the end of the partition after the filesystem if there's
* enough space. "Enough space" is defined as >= 1MB of journal
* per 1GB of filesystem or 64MB, whichever is smaller.
*
* - Inside the filesystem. We try to allocate a contiguous journal
* based on the total filesystem size - the target is 1MB of journal
* per 1GB of filesystem, up to a maximum journal size of 64MB. As
* a worst case allowing for fragmentation, we'll allocate a journal
* 1/4 of the desired size but never smaller than 1MB.
*
* XXX In the future if we allow for non-contiguous journal files we
* can tighten the above restrictions.
*
* XXX
* These seems like a lot of duplication both here and in some of
* the userland tools (fsck_ffs, dumpfs, tunefs) with similar
* "switch (fs_journal_location)" constructs. Can we centralise
* this sort of code somehow/somewhere?
*/
int
wapbl_log_position(struct mount *mp, struct fs *fs, struct vnode *devvp,
daddr_t *startp, size_t *countp, size_t *blksizep, uint64_t *extradatap)
{
struct ufsmount *ump = VFSTOUFS(mp);
daddr_t logstart, logend, desired_logsize;
uint64_t numsecs;
unsigned secsize;
int error, location;
if (fs->fs_journal_version == UFS_WAPBL_VERSION) {
switch (fs->fs_journal_location) {
case UFS_WAPBL_JOURNALLOC_END_PARTITION:
DPRINTF("found existing end-of-partition log\n");
*startp = fs->fs_journallocs[UFS_WAPBL_EPART_ADDR];
*countp = fs->fs_journallocs[UFS_WAPBL_EPART_COUNT];
*blksizep = fs->fs_journallocs[UFS_WAPBL_EPART_BLKSZ];
DPRINTF(" start = %lld, size = %zu, "
"blksize = %zu\n", *startp, *countp, *blksizep);
return 0;
case UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM:
DPRINTF("found existing in-filesystem log\n");
*startp = fs->fs_journallocs[UFS_WAPBL_INFS_ADDR];
*countp = fs->fs_journallocs[UFS_WAPBL_INFS_COUNT];
*blksizep = fs->fs_journallocs[UFS_WAPBL_INFS_BLKSZ];
DPRINTF(" start = %lld, size = %zu, "
"blksize = %zu\n", *startp, *countp, *blksizep);
return 0;
default:
printf("ffs_wapbl: unknown journal type %d\n",
fs->fs_journal_location);
return EINVAL;
}
}
desired_logsize =
lfragtosize(fs, fs->fs_size) / UFS_WAPBL_JOURNAL_SCALE;
DPRINTF("desired log size = %lld kB\n", desired_logsize / 1024);
desired_logsize = max(desired_logsize, UFS_WAPBL_MIN_JOURNAL_SIZE);
desired_logsize = min(desired_logsize, UFS_WAPBL_MAX_JOURNAL_SIZE);
DPRINTF("adjusted desired log size = %lld kB\n",
desired_logsize / 1024);
/* Is there space after after filesystem on partition for log? */
logstart = fsbtodb(fs, fs->fs_size);
error = wapbl_getdisksize(devvp, &numsecs, &secsize);
if (error)
return error;
KDASSERT(secsize != 0);
logend = btodb(numsecs * secsize);
if (dbtob(logend - logstart) >= desired_logsize) {
DPRINTF("enough space, use end-of-partition log\n");
location = UFS_WAPBL_JOURNALLOC_END_PARTITION;
*blksizep = secsize;
*startp = logstart;
*countp = (logend - logstart);
*extradatap = 0;
/* convert to physical block numbers */
*startp = dbtob(*startp) / secsize;
*countp = dbtob(*countp) / secsize;
fs->fs_journallocs[UFS_WAPBL_EPART_ADDR] = *startp;
fs->fs_journallocs[UFS_WAPBL_EPART_COUNT] = *countp;
fs->fs_journallocs[UFS_WAPBL_EPART_BLKSZ] = *blksizep;
fs->fs_journallocs[UFS_WAPBL_EPART_UNUSED] = *extradatap;
} else {
DPRINTF("end-of-partition has only %lld free\n",
logend - logstart);
location = UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM;
*blksizep = secsize;
error = wapbl_create_infs_log(mp, fs, devvp,
startp, countp, extradatap);
ffs_sync(mp, MNT_WAIT, FSCRED, curproc);
/* convert to physical block numbers */
*startp = dbtob(*startp) / secsize;
*countp = dbtob(*countp) / secsize;
fs->fs_journallocs[UFS_WAPBL_INFS_ADDR] = *startp;
fs->fs_journallocs[UFS_WAPBL_INFS_COUNT] = *countp;
fs->fs_journallocs[UFS_WAPBL_INFS_BLKSZ] = *blksizep;
fs->fs_journallocs[UFS_WAPBL_INFS_INO] = *extradatap;
}
if (error == 0) {
/* update superblock with log location */
fs->fs_journal_version = UFS_WAPBL_VERSION;
fs->fs_journal_location = location;
fs->fs_journal_flags = 0;
error = ffs_sbupdate(ump, MNT_WAIT);
}
return error;
}
int
ffs_wapbl_start(struct mount *mp)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct fs *fs = ump->um_fs;
struct vnode *devvp = ump->um_devvp;
daddr_t off;
size_t count;
size_t blksize;
uint64_t extradata;
int error;
if (mp->mnt_wapbl == NULL) {
if (fs->fs_journal_flags & UFS_WAPBL_FLAGS_CLEAR_LOG) {
/* Clear out any existing journal file */
error = wapbl_remove_log(mp);
if (error != 0)
return error;
}
if (mp->mnt_flag & MNT_LOG) {
KDASSERT(fs->fs_ronly == 0);
/* WAPBL needs UFS2 format super block */
if (ffs_superblock_layout(fs) < 2) {
printf("%s fs superblock in old format, "
"not journaling\n",
VFSTOUFS(mp)->um_fs->fs_fsmnt);
mp->mnt_flag &= ~MNT_LOG;
return EINVAL;
}
error = wapbl_log_position(mp, fs, devvp, &off,
&count, &blksize, &extradata);
if (error)
return error;
error = wapbl_start(&mp->mnt_wapbl, mp, devvp, off,
count, blksize, mp->mnt_wapbl_replay,
ffs_wapbl_sync_metadata,
ffs_wapbl_abort_sync_metadata);
if (error)
return error;
mp->mnt_wapbl_op = &wapbl_ops;
#ifdef WAPBL_DEBUG
printf("%s: enabling logging\n", fs->fs_fsmnt);
#endif
if ((fs->fs_flags & FS_DOWAPBL) == 0) {
UFS_WAPBL_BEGIN(mp);
fs->fs_flags |= FS_DOWAPBL;
error = ffs_sbupdate(ump, MNT_WAIT);
if (error) {
UFS_WAPBL_END(mp);
ffs_wapbl_stop(mp, MNT_FORCE);
return error;
}
UFS_WAPBL_END(mp);
error = wapbl_flush(mp->mnt_wapbl, 1);
if (error) {
ffs_wapbl_stop(mp, MNT_FORCE);
return error;
}
}
} else if (fs->fs_flags & FS_DOWAPBL) {
fs->fs_fmod = 1;
fs->fs_flags &= ~FS_DOWAPBL;
}
}
/*
* It is recommended that you finish replay with logging enabled.
* However, even if logging is not enabled, the remaining log
* replay should be safely recoverable with an fsck, so perform
* it anyway.
*/
if ((fs->fs_ronly == 0) && mp->mnt_wapbl_replay) {
int saveflag = mp->mnt_flag & MNT_RDONLY;
/*
* Make sure MNT_RDONLY is not set so that the inode
* cleanup in ufs_inactive will actually do its work.
*/
mp->mnt_flag &= ~MNT_RDONLY;
ffs_wapbl_replay_finish(mp);
mp->mnt_flag |= saveflag;
KASSERT(fs->fs_ronly == 0);
}
return 0;
}
int
wapbl_remove_log(struct mount *mp)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct fs *fs = ump->um_fs;
struct vnode *vp;
struct inode *ip;
ino_t log_ino;
int error;
/* If super block layout is too old to support WAPBL, return */
if (ffs_superblock_layout(fs) < 2)
return 0;
/* If all the log locators are 0, just clean up */
if (fs->fs_journallocs[0] == 0 &&
fs->fs_journallocs[1] == 0 &&
fs->fs_journallocs[2] == 0 &&
fs->fs_journallocs[3] == 0) {
DPRINTF("empty locators, just clear\n");
goto done;
}
switch (fs->fs_journal_location) {
case UFS_WAPBL_JOURNALLOC_NONE:
/* nothing! */
DPRINTF("no log\n");
break;
case UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM:
log_ino = fs->fs_journallocs[UFS_WAPBL_INFS_INO];
DPRINTF("in-fs log, ino = %lld\n",log_ino);
/* if no existing log inode, just clear all fields and bail */
if (log_ino == 0)
goto done;
error = VFS_VGET(mp, log_ino, &vp);
if (error != 0) {
printf("ffs_wapbl: vget failed %d\n",
error);
/* clear out log info on error */
goto done;
}
ip = VTOI(vp);
KASSERT(log_ino == ip->i_number);
if ((DIP(ip, flags) & SF_LOG) == 0) {
printf("ffs_wapbl: try to clear non-log inode "
"%lld\n", log_ino);
vput(vp);
/* clear out log info on error */
goto done;
}
/*
* remove the log inode by setting its link count back
* to zero and bail.
*/
ip->i_effnlink = 0;
DIP_ASSIGN(ip, nlink, 0);
vput(vp);
case UFS_WAPBL_JOURNALLOC_END_PARTITION:
DPRINTF("end-of-partition log\n");
/* no extra work required */
break;
default:
printf("ffs_wapbl: unknown journal type %d\n",
fs->fs_journal_location);
break;
}
done:
/* Clear out all previous knowledge of journal */
fs->fs_journal_version = 0;
fs->fs_journal_location = 0;
fs->fs_journal_flags = 0;
fs->fs_journallocs[0] = 0;
fs->fs_journallocs[1] = 0;
fs->fs_journallocs[2] = 0;
fs->fs_journallocs[3] = 0;
(void) ffs_sbupdate(ump, MNT_WAIT);
return 0;
}
static int
ntfs_mount (
struct mount *mp,
char *path,
caddr_t data,
struct nameidata *ndp,
struct proc *p )
{
u_int size;
int err = 0;
struct vnode *devvp;
struct ntfs_args args;
/*
* Use NULL path to flag a root mount
*/
if( path == NULL) {
/*
***
* Mounting root file system
***
*/
/* Get vnode for root device*/
if( bdevvp( rootdev, &rootvp))
panic("ffs_mountroot: can't setup bdevvp for root");
/*
* FS specific handling
*/
mp->mnt_flag |= MNT_RDONLY; /* XXX globally applicable?*/
/*
* Attempt mount
*/
if( ( err = ntfs_mountfs(rootvp, mp, &args, p)) != 0) {
/* fs specific cleanup (if any)*/
goto error_1;
}
goto dostatfs; /* success*/
}
/*
***
* Mounting non-root file system or updating a file system
***
*/
/* copy in user arguments*/
err = copyin(data, (caddr_t)&args, sizeof (struct ntfs_args));
if (err)
goto error_1; /* can't get arguments*/
/*
* 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) {
printf("ntfs_mount(): MNT_UPDATE not supported\n");
err = EINVAL;
goto error_1;
#if 0
ump = VFSTOUFS(mp);
fs = ump->um_fs;
err = 0;
if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
flags = WRITECLOSE;
if (mp->mnt_flag & MNT_FORCE)
flags |= FORCECLOSE;
if (vfs_busy(mp)) {
err = EBUSY;
goto error_1;
}
err = ffs_flushfiles(mp, flags, p);
vfs_unbusy(mp);
}
if (!err && (mp->mnt_flag & MNT_RELOAD))
err = ffs_reload(mp, ndp->ni_cnd.cn_cred, p);
if (err) {
goto error_1;
}
if (fs->fs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) {
if (!fs->fs_clean) {
if (mp->mnt_flag & MNT_FORCE) {
printf("WARNING: %s was not properly dismounted.\n",fs->fs_fsmnt);
} else {
printf("WARNING: R/W mount of %s denied. Filesystem is not clean - run fsck.\n",
fs->fs_fsmnt);
err = EPERM;
goto error_1;
}
}
fs->fs_ronly = 0;
}
if (fs->fs_ronly == 0) {
fs->fs_clean = 0;
ffs_sbupdate(ump, MNT_WAIT);
}
/* if not updating name...*/
if (args.fspec == 0) {
/*
* Process export requests. Jumping to "success"
* will return the vfs_export() error code.
*/
err = vfs_export(mp, &ump->um_export, &args.export);
goto success;
}