/sys/ufs/ffs/ffs_vfsops.c
C | 2144 lines | 1567 code | 184 blank | 393 comment | 401 complexity | 83ac6bcbf6505dbe547ad438974d1365 MD5 | raw file
Possible License(s): BSD-3-Clause, LGPL-2.0, WTFPL, AGPL-1.0
- /* $NetBSD: ffs_vfsops.c,v 1.271 2011/11/14 18:35:14 hannken Exp $ */
- /*-
- * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Wasabi Systems, Inc, and by Andrew Doran.
- *
- * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
- */
- /*
- * 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 8.31 (Berkeley) 5/20/95
- */
- #include <sys/cdefs.h>
- __KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.271 2011/11/14 18:35:14 hannken Exp $");
- #if defined(_KERNEL_OPT)
- #include "opt_ffs.h"
- #include "opt_quota.h"
- #include "opt_wapbl.h"
- #endif
- #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/device.h>
- #include <sys/disk.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/pool.h>
- #include <sys/lock.h>
- #include <sys/sysctl.h>
- #include <sys/conf.h>
- #include <sys/kauth.h>
- #include <sys/wapbl.h>
- #include <sys/fstrans.h>
- #include <sys/module.h>
- #include <miscfs/genfs/genfs.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/ufs_bswap.h>
- #include <ufs/ufs/ufs_wapbl.h>
- #include <ufs/ffs/fs.h>
- #include <ufs/ffs/ffs_extern.h>
- MODULE(MODULE_CLASS_VFS, ffs, NULL);
- static int ffs_vfs_fsync(vnode_t *, int);
- static struct sysctllog *ffs_sysctl_log;
- /* how many times ffs_init() was called */
- int ffs_initcount = 0;
- extern const struct vnodeopv_desc ffs_vnodeop_opv_desc;
- extern const struct vnodeopv_desc ffs_specop_opv_desc;
- extern const struct vnodeopv_desc ffs_fifoop_opv_desc;
- const struct vnodeopv_desc * const ffs_vnodeopv_descs[] = {
- &ffs_vnodeop_opv_desc,
- &ffs_specop_opv_desc,
- &ffs_fifoop_opv_desc,
- NULL,
- };
- struct vfsops ffs_vfsops = {
- MOUNT_FFS,
- sizeof (struct ufs_args),
- ffs_mount,
- ufs_start,
- ffs_unmount,
- ufs_root,
- ufs_quotactl,
- ffs_statvfs,
- ffs_sync,
- ffs_vget,
- ffs_fhtovp,
- ffs_vptofh,
- ffs_init,
- ffs_reinit,
- ffs_done,
- ffs_mountroot,
- ffs_snapshot,
- ffs_extattrctl,
- ffs_suspendctl,
- genfs_renamelock_enter,
- genfs_renamelock_exit,
- ffs_vfs_fsync,
- ffs_vnodeopv_descs,
- 0,
- { NULL, NULL },
- };
- static const struct genfs_ops ffs_genfsops = {
- .gop_size = ffs_gop_size,
- .gop_alloc = ufs_gop_alloc,
- .gop_write = genfs_gop_write,
- .gop_markupdate = ufs_gop_markupdate,
- };
- static const struct ufs_ops ffs_ufsops = {
- .uo_itimes = ffs_itimes,
- .uo_update = ffs_update,
- .uo_truncate = ffs_truncate,
- .uo_valloc = ffs_valloc,
- .uo_vfree = ffs_vfree,
- .uo_balloc = ffs_balloc,
- .uo_unmark_vnode = (void (*)(vnode_t *))nullop,
- };
- static int
- ffs_modcmd(modcmd_t cmd, void *arg)
- {
- int error;
- #if 0
- extern int doasyncfree;
- #endif
- #ifdef UFS_EXTATTR
- extern int ufs_extattr_autocreate;
- #endif
- extern int ffs_log_changeopt;
- switch (cmd) {
- case MODULE_CMD_INIT:
- error = vfs_attach(&ffs_vfsops);
- if (error != 0)
- break;
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT,
- CTLTYPE_NODE, "vfs", NULL,
- NULL, 0, NULL, 0,
- CTL_VFS, CTL_EOL);
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT,
- CTLTYPE_NODE, "ffs",
- SYSCTL_DESCR("Berkeley Fast File System"),
- NULL, 0, NULL, 0,
- CTL_VFS, 1, CTL_EOL);
- /*
- * @@@ should we even bother with these first three?
- */
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
- CTLTYPE_INT, "doclusterread", NULL,
- sysctl_notavail, 0, NULL, 0,
- CTL_VFS, 1, FFS_CLUSTERREAD, CTL_EOL);
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
- CTLTYPE_INT, "doclusterwrite", NULL,
- sysctl_notavail, 0, NULL, 0,
- CTL_VFS, 1, FFS_CLUSTERWRITE, CTL_EOL);
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
- CTLTYPE_INT, "doreallocblks", NULL,
- sysctl_notavail, 0, NULL, 0,
- CTL_VFS, 1, FFS_REALLOCBLKS, CTL_EOL);
- #if 0
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
- CTLTYPE_INT, "doasyncfree",
- SYSCTL_DESCR("Release dirty blocks asynchronously"),
- NULL, 0, &doasyncfree, 0,
- CTL_VFS, 1, FFS_ASYNCFREE, CTL_EOL);
- #endif
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
- CTLTYPE_INT, "log_changeopt",
- SYSCTL_DESCR("Log changes in optimization strategy"),
- NULL, 0, &ffs_log_changeopt, 0,
- CTL_VFS, 1, FFS_LOG_CHANGEOPT, CTL_EOL);
- #ifdef UFS_EXTATTR
- sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
- CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
- CTLTYPE_INT, "extattr_autocreate",
- SYSCTL_DESCR("Size of attribute for "
- "backing file autocreation"),
- NULL, 0, &ufs_extattr_autocreate, 0,
- CTL_VFS, 1, FFS_EXTATTR_AUTOCREATE, CTL_EOL);
-
- #endif /* UFS_EXTATTR */
- break;
- case MODULE_CMD_FINI:
- error = vfs_detach(&ffs_vfsops);
- if (error != 0)
- break;
- sysctl_teardown(&ffs_sysctl_log);
- break;
- default:
- error = ENOTTY;
- break;
- }
- return (error);
- }
- pool_cache_t ffs_inode_cache;
- pool_cache_t ffs_dinode1_cache;
- pool_cache_t ffs_dinode2_cache;
- static void ffs_oldfscompat_read(struct fs *, struct ufsmount *, daddr_t);
- static void ffs_oldfscompat_write(struct fs *, struct ufsmount *);
- /*
- * Called by main() when ffs is going to be mounted as root.
- */
- int
- ffs_mountroot(void)
- {
- struct fs *fs;
- struct mount *mp;
- struct lwp *l = curlwp; /* XXX */
- struct ufsmount *ump;
- int error;
- if (device_class(root_device) != DV_DISK)
- return (ENODEV);
- if ((error = vfs_rootmountalloc(MOUNT_FFS, "root_device", &mp))) {
- vrele(rootvp);
- return (error);
- }
- /*
- * We always need to be able to mount the root file system.
- */
- mp->mnt_flag |= MNT_FORCE;
- if ((error = ffs_mountfs(rootvp, mp, l)) != 0) {
- vfs_unbusy(mp, false, NULL);
- vfs_destroy(mp);
- return (error);
- }
- mp->mnt_flag &= ~MNT_FORCE;
- mutex_enter(&mountlist_lock);
- CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
- mutex_exit(&mountlist_lock);
- ump = VFSTOUFS(mp);
- fs = ump->um_fs;
- memset(fs->fs_fsmnt, 0, sizeof(fs->fs_fsmnt));
- (void)copystr(mp->mnt_stat.f_mntonname, fs->fs_fsmnt, MNAMELEN - 1, 0);
- (void)ffs_statvfs(mp, &mp->mnt_stat);
- vfs_unbusy(mp, false, NULL);
- setrootfstime((time_t)fs->fs_time);
- return (0);
- }
- /*
- * VFS Operations.
- *
- * mount system call
- */
- int
- ffs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
- {
- struct lwp *l = curlwp;
- struct vnode *devvp = NULL;
- struct ufs_args *args = data;
- struct ufsmount *ump = NULL;
- struct fs *fs;
- int error = 0, flags, update;
- mode_t accessmode;
- if (*data_len < sizeof *args)
- return EINVAL;
- if (mp->mnt_flag & MNT_GETARGS) {
- ump = VFSTOUFS(mp);
- if (ump == NULL)
- return EIO;
- args->fspec = NULL;
- *data_len = sizeof *args;
- return 0;
- }
- update = mp->mnt_flag & MNT_UPDATE;
- /* Check arguments */
- if (args->fspec != NULL) {
- /*
- * Look up the name and verify that it's sane.
- */
- error = namei_simple_user(args->fspec,
- NSM_FOLLOW_NOEMULROOT, &devvp);
- if (error != 0)
- return (error);
- if (!update) {
- /*
- * Be sure this is a valid block device
- */
- if (devvp->v_type != VBLK)
- error = ENOTBLK;
- else if (bdevsw_lookup(devvp->v_rdev) == NULL)
- error = ENXIO;
- } else {
- /*
- * Be sure we're still naming the same device
- * used for our initial mount
- */
- ump = VFSTOUFS(mp);
- if (devvp != ump->um_devvp) {
- if (devvp->v_rdev != ump->um_devvp->v_rdev)
- error = EINVAL;
- else {
- vrele(devvp);
- devvp = ump->um_devvp;
- vref(devvp);
- }
- }
- }
- } else {
- if (!update) {
- /* New mounts must have a filename for the device */
- return (EINVAL);
- } else {
- /* Use the extant mount */
- ump = VFSTOUFS(mp);
- devvp = ump->um_devvp;
- vref(devvp);
- }
- }
- /*
- * If mount by non-root, then verify that user has necessary
- * permissions on the device.
- *
- * Permission to update a mount is checked higher, so here we presume
- * updating the mount is okay (for example, as far as securelevel goes)
- * which leaves us with the normal check.
- */
- if (error == 0) {
- accessmode = VREAD;
- if (update ?
- (mp->mnt_iflag & IMNT_WANTRDWR) != 0 :
- (mp->mnt_flag & MNT_RDONLY) == 0)
- accessmode |= VWRITE;
- vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
- error = genfs_can_mount(devvp, accessmode, l->l_cred);
- VOP_UNLOCK(devvp);
- }
- if (error) {
- vrele(devvp);
- return (error);
- }
- #ifdef WAPBL
- /* WAPBL can only be enabled on a r/w mount. */
- if ((mp->mnt_flag & MNT_RDONLY) && !(mp->mnt_iflag & IMNT_WANTRDWR)) {
- mp->mnt_flag &= ~MNT_LOG;
- }
- #else /* !WAPBL */
- mp->mnt_flag &= ~MNT_LOG;
- #endif /* !WAPBL */
- if (!update) {
- int xflags;
- if (mp->mnt_flag & MNT_RDONLY)
- xflags = FREAD;
- else
- xflags = FREAD | FWRITE;
- vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
- error = VOP_OPEN(devvp, xflags, FSCRED);
- VOP_UNLOCK(devvp);
- if (error)
- goto fail;
- error = ffs_mountfs(devvp, mp, l);
- if (error) {
- vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
- (void)VOP_CLOSE(devvp, xflags, NOCRED);
- VOP_UNLOCK(devvp);
- goto fail;
- }
- ump = VFSTOUFS(mp);
- fs = ump->um_fs;
- } else {
- /*
- * Update the mount.
- */
- /*
- * The initial mount got a reference on this
- * device, so drop the one obtained via
- * namei(), above.
- */
- vrele(devvp);
- ump = VFSTOUFS(mp);
- fs = ump->um_fs;
- if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
- /*
- * Changing from r/w to r/o
- */
- flags = WRITECLOSE;
- if (mp->mnt_flag & MNT_FORCE)
- flags |= FORCECLOSE;
- error = ffs_flushfiles(mp, flags, l);
- if (error == 0)
- error = UFS_WAPBL_BEGIN(mp);
- if (error == 0 &&
- ffs_cgupdate(ump, MNT_WAIT) == 0 &&
- fs->fs_clean & FS_WASCLEAN) {
- if (mp->mnt_flag & MNT_SOFTDEP)
- fs->fs_flags &= ~FS_DOSOFTDEP;
- fs->fs_clean = FS_ISCLEAN;
- (void) ffs_sbupdate(ump, MNT_WAIT);
- }
- if (error == 0)
- UFS_WAPBL_END(mp);
- if (error)
- return (error);
- }
- #ifdef WAPBL
- if ((mp->mnt_flag & MNT_LOG) == 0) {
- error = ffs_wapbl_stop(mp, mp->mnt_flag & MNT_FORCE);
- if (error)
- return error;
- }
- #endif /* WAPBL */
- if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
- /*
- * Finish change from r/w to r/o
- */
- fs->fs_ronly = 1;
- fs->fs_fmod = 0;
- }
- if (mp->mnt_flag & MNT_RELOAD) {
- error = ffs_reload(mp, l->l_cred, l);
- if (error)
- return (error);
- }
- if (fs->fs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR)) {
- /*
- * Changing from read-only to read/write
- */
- #ifndef QUOTA2
- if (fs->fs_flags & FS_DOQUOTA2) {
- ump->um_flags |= UFS_QUOTA2;
- uprintf("%s: options QUOTA2 not enabled%s\n",
- mp->mnt_stat.f_mntonname,
- (mp->mnt_flag & MNT_FORCE) ? "" :
- ", not mounting");
- return EINVAL;
- }
- #endif
- fs->fs_ronly = 0;
- fs->fs_clean <<= 1;
- fs->fs_fmod = 1;
- #ifdef WAPBL
- if (fs->fs_flags & FS_DOWAPBL) {
- printf("%s: replaying log to disk\n",
- fs->fs_fsmnt);
- KDASSERT(mp->mnt_wapbl_replay);
- error = wapbl_replay_write(mp->mnt_wapbl_replay,
- devvp);
- if (error) {
- return error;
- }
- wapbl_replay_stop(mp->mnt_wapbl_replay);
- fs->fs_clean = FS_WASCLEAN;
- }
- #endif /* WAPBL */
- if (fs->fs_snapinum[0] != 0)
- ffs_snapshot_mount(mp);
- }
- #ifdef WAPBL
- error = ffs_wapbl_start(mp);
- if (error)
- return error;
- #endif /* WAPBL */
- #ifdef QUOTA2
- if (!fs->fs_ronly) {
- error = ffs_quota2_mount(mp);
- if (error) {
- return error;
- }
- }
- #endif
- if (args->fspec == NULL)
- return 0;
- }
- error = set_statvfs_info(path, UIO_USERSPACE, args->fspec,
- UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l);
- if (error == 0)
- (void)strncpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname,
- sizeof(fs->fs_fsmnt));
- fs->fs_flags &= ~FS_DOSOFTDEP;
- if (fs->fs_fmod != 0) { /* XXX */
- int err;
- fs->fs_fmod = 0;
- if (fs->fs_clean & FS_WASCLEAN)
- fs->fs_time = time_second;
- else {
- printf("%s: file system not clean (fs_clean=%#x); "
- "please fsck(8)\n", mp->mnt_stat.f_mntfromname,
- fs->fs_clean);
- printf("%s: lost blocks %" PRId64 " files %d\n",
- mp->mnt_stat.f_mntfromname, fs->fs_pendingblocks,
- fs->fs_pendinginodes);
- }
- err = UFS_WAPBL_BEGIN(mp);
- if (err == 0) {
- (void) ffs_cgupdate(ump, MNT_WAIT);
- UFS_WAPBL_END(mp);
- }
- }
- if ((mp->mnt_flag & MNT_SOFTDEP) != 0) {
- printf("%s: `-o softdep' is no longer supported, "
- "consider `-o log'\n", mp->mnt_stat.f_mntfromname);
- mp->mnt_flag &= ~MNT_SOFTDEP;
- }
- return (error);
- fail:
- vrele(devvp);
- return (error);
- }
- /*
- * 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 *mp, kauth_cred_t cred, struct lwp *l)
- {
- struct vnode *vp, *mvp, *devvp;
- struct inode *ip;
- void *space;
- struct buf *bp;
- struct fs *fs, *newfs;
- struct dkwedge_info dkw;
- int i, bsize, blks, error;
- int32_t *lp;
- struct ufsmount *ump;
- daddr_t sblockloc;
- if ((mp->mnt_flag & MNT_RDONLY) == 0)
- return (EINVAL);
- ump = VFSTOUFS(mp);
- /*
- * Step 1: invalidate all cached meta-data.
- */
- devvp = ump->um_devvp;
- vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
- error = vinvalbuf(devvp, 0, cred, l, 0, 0);
- VOP_UNLOCK(devvp);
- if (error)
- panic("ffs_reload: dirty1");
- /*
- * Step 2: re-read superblock from disk.
- */
- fs = ump->um_fs;
- /* XXX we don't handle possibility that superblock moved. */
- error = bread(devvp, fs->fs_sblockloc / DEV_BSIZE, fs->fs_sbsize,
- NOCRED, 0, &bp);
- if (error) {
- brelse(bp, 0);
- return (error);
- }
- newfs = malloc(fs->fs_sbsize, M_UFSMNT, M_WAITOK);
- memcpy(newfs, bp->b_data, fs->fs_sbsize);
- #ifdef FFS_EI
- if (ump->um_flags & UFS_NEEDSWAP) {
- ffs_sb_swap((struct fs*)bp->b_data, newfs);
- fs->fs_flags |= FS_SWAPPED;
- } else
- #endif
- fs->fs_flags &= ~FS_SWAPPED;
- if ((newfs->fs_magic != FS_UFS1_MAGIC &&
- newfs->fs_magic != FS_UFS2_MAGIC)||
- newfs->fs_bsize > MAXBSIZE ||
- newfs->fs_bsize < sizeof(struct fs)) {
- brelse(bp, 0);
- free(newfs, M_UFSMNT);
- return (EIO); /* XXX needs translation */
- }
- /* Store off old fs_sblockloc for fs_oldfscompat_read. */
- sblockloc = fs->fs_sblockloc;
- /*
- * 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_contigdirs = fs->fs_contigdirs;
- newfs->fs_ronly = fs->fs_ronly;
- newfs->fs_active = fs->fs_active;
- memcpy(fs, newfs, (u_int)fs->fs_sbsize);
- brelse(bp, 0);
- free(newfs, M_UFSMNT);
- /* Recheck for apple UFS filesystem */
- ump->um_flags &= ~UFS_ISAPPLEUFS;
- /* First check to see if this is tagged as an Apple UFS filesystem
- * in the disklabel
- */
- if (getdiskinfo(devvp, &dkw) == 0 &&
- strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0)
- ump->um_flags |= UFS_ISAPPLEUFS;
- #ifdef APPLE_UFS
- else {
- /* Manually look for an apple ufs label, and if a valid one
- * is found, then treat it like an Apple UFS filesystem anyway
- *
- * EINVAL is most probably a blocksize or alignment problem,
- * it is unlikely that this is an Apple UFS filesystem then.
- */
- error = bread(devvp, (daddr_t)(APPLEUFS_LABEL_OFFSET / DEV_BSIZE),
- APPLEUFS_LABEL_SIZE, cred, 0, &bp);
- if (error && error != EINVAL) {
- brelse(bp, 0);
- return (error);
- }
- if (error == 0) {
- error = ffs_appleufs_validate(fs->fs_fsmnt,
- (struct appleufslabel *)bp->b_data, NULL);
- if (error == 0)
- ump->um_flags |= UFS_ISAPPLEUFS;
- }
- brelse(bp, 0);
- bp = NULL;
- }
- #else
- if (ump->um_flags & UFS_ISAPPLEUFS)
- return (EIO);
- #endif
- if (UFS_MPISAPPLEUFS(ump)) {
- /* see comment about NeXT below */
- ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN;
- ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ;
- mp->mnt_iflag |= IMNT_DTYPE;
- } else {
- ump->um_maxsymlinklen = fs->fs_maxsymlinklen;
- ump->um_dirblksiz = DIRBLKSIZ;
- if (ump->um_maxsymlinklen > 0)
- mp->mnt_iflag |= IMNT_DTYPE;
- else
- mp->mnt_iflag &= ~IMNT_DTYPE;
- }
- ffs_oldfscompat_read(fs, ump, sblockloc);
- mutex_enter(&ump->um_lock);
- ump->um_maxfilesize = fs->fs_maxfilesize;
- if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) {
- uprintf("%s: unknown ufs flags: 0x%08"PRIx32"%s\n",
- mp->mnt_stat.f_mntonname, fs->fs_flags,
- (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting");
- if ((mp->mnt_flag & MNT_FORCE) == 0) {
- mutex_exit(&ump->um_lock);
- return (EINVAL);
- }
- }
- if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) {
- fs->fs_pendingblocks = 0;
- fs->fs_pendinginodes = 0;
- }
- mutex_exit(&ump->um_lock);
- ffs_statvfs(mp, &mp->mnt_stat);
- /*
- * Step 3: re-read summary information from disk.
- */
- blks = howmany(fs->fs_cssize, fs->fs_fsize);
- space = fs->fs_csp;
- for (i = 0; i < blks; i += fs->fs_frag) {
- bsize = fs->fs_bsize;
- if (i + fs->fs_frag > blks)
- bsize = (blks - i) * fs->fs_fsize;
- error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), bsize,
- NOCRED, 0, &bp);
- if (error) {
- brelse(bp, 0);
- return (error);
- }
- #ifdef FFS_EI
- if (UFS_FSNEEDSWAP(fs))
- ffs_csum_swap((struct csum *)bp->b_data,
- (struct csum *)space, bsize);
- else
- #endif
- memcpy(space, bp->b_data, (size_t)bsize);
- space = (char *)space + bsize;
- brelse(bp, 0);
- }
- if (fs->fs_snapinum[0] != 0)
- ffs_snapshot_mount(mp);
- /*
- * 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;
- }
- /* Allocate a marker vnode. */
- mvp = vnalloc(mp);
- /*
- * NOTE: not using the TAILQ_FOREACH here since in this loop vgone()
- * and vclean() can be called indirectly
- */
- mutex_enter(&mntvnode_lock);
- loop:
- for (vp = TAILQ_FIRST(&mp->mnt_vnodelist); vp; vp = vunmark(mvp)) {
- vmark(mvp, vp);
- if (vp->v_mount != mp || vismarker(vp))
- continue;
- /*
- * Step 4: invalidate all inactive vnodes.
- */
- if (vrecycle(vp, &mntvnode_lock, l)) {
- mutex_enter(&mntvnode_lock);
- (void)vunmark(mvp);
- goto loop;
- }
- /*
- * Step 5: invalidate all cached file data.
- */
- mutex_enter(vp->v_interlock);
- mutex_exit(&mntvnode_lock);
- if (vget(vp, LK_EXCLUSIVE)) {
- (void)vunmark(mvp);
- goto loop;
- }
- if (vinvalbuf(vp, 0, cred, l, 0, 0))
- panic("ffs_reload: dirty2");
- /*
- * Step 6: re-read inode data for all active vnodes.
- */
- ip = VTOI(vp);
- error = bread(devvp, fsbtodb(fs, ino_to_fsba(fs, ip->i_number)),
- (int)fs->fs_bsize, NOCRED, 0, &bp);
- if (error) {
- brelse(bp, 0);
- vput(vp);
- (void)vunmark(mvp);
- break;
- }
- ffs_load_inode(bp, ip, fs, ip->i_number);
- brelse(bp, 0);
- vput(vp);
- mutex_enter(&mntvnode_lock);
- }
- mutex_exit(&mntvnode_lock);
- vnfree(mvp);
- return (error);
- }
- /*
- * Possible superblock locations ordered from most to least likely.
- */
- static const int sblock_try[] = SBLOCKSEARCH;
- /*
- * Common code for mount and mountroot
- */
- int
- ffs_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l)
- {
- struct ufsmount *ump;
- struct buf *bp;
- struct fs *fs;
- dev_t dev;
- struct dkwedge_info dkw;
- void *space;
- daddr_t sblockloc, fsblockloc;
- int blks, fstype;
- int error, i, bsize, ronly, bset = 0;
- #ifdef FFS_EI
- int needswap = 0; /* keep gcc happy */
- #endif
- int32_t *lp;
- kauth_cred_t cred;
- u_int32_t sbsize = 8192; /* keep gcc happy*/
- int32_t fsbsize;
- dev = devvp->v_rdev;
- cred = l ? l->l_cred : NOCRED;
- /* Flush out any old buffers remaining from a previous use. */
- vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
- error = vinvalbuf(devvp, V_SAVE, cred, l, 0, 0);
- VOP_UNLOCK(devvp);
- if (error)
- return (error);
- ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
- bp = NULL;
- ump = NULL;
- fs = NULL;
- sblockloc = 0;
- fstype = 0;
- error = fstrans_mount(mp);
- if (error)
- return error;
- ump = malloc(sizeof *ump, M_UFSMNT, M_WAITOK);
- memset(ump, 0, sizeof *ump);
- mutex_init(&ump->um_lock, MUTEX_DEFAULT, IPL_NONE);
- error = ffs_snapshot_init(ump);
- if (error)
- goto out;
- ump->um_ops = &ffs_ufsops;
- #ifdef WAPBL
- sbagain:
- #endif
- /*
- * Try reading the superblock in each of its possible locations.
- */
- for (i = 0; ; i++) {
- if (bp != NULL) {
- brelse(bp, BC_NOCACHE);
- bp = NULL;
- }
- if (sblock_try[i] == -1) {
- error = EINVAL;
- fs = NULL;
- goto out;
- }
- error = bread(devvp, sblock_try[i] / DEV_BSIZE, SBLOCKSIZE, cred,
- 0, &bp);
- if (error) {
- fs = NULL;
- goto out;
- }
- fs = (struct fs*)bp->b_data;
- fsblockloc = sblockloc = sblock_try[i];
- if (fs->fs_magic == FS_UFS1_MAGIC) {
- sbsize = fs->fs_sbsize;
- fstype = UFS1;
- fsbsize = fs->fs_bsize;
- #ifdef FFS_EI
- needswap = 0;
- } else if (fs->fs_magic == bswap32(FS_UFS1_MAGIC)) {
- sbsize = bswap32(fs->fs_sbsize);
- fstype = UFS1;
- fsbsize = bswap32(fs->fs_bsize);
- needswap = 1;
- #endif
- } else if (fs->fs_magic == FS_UFS2_MAGIC) {
- sbsize = fs->fs_sbsize;
- fstype = UFS2;
- fsbsize = fs->fs_bsize;
- #ifdef FFS_EI
- needswap = 0;
- } else if (fs->fs_magic == bswap32(FS_UFS2_MAGIC)) {
- sbsize = bswap32(fs->fs_sbsize);
- fstype = UFS2;
- fsbsize = bswap32(fs->fs_bsize);
- needswap = 1;
- #endif
- } else
- continue;
- /* fs->fs_sblockloc isn't defined for old filesystems */
- if (fstype == UFS1 && !(fs->fs_old_flags & FS_FLAGS_UPDATED)) {
- if (sblockloc == SBLOCK_UFS2)
- /*
- * This is likely to be the first alternate
- * in a filesystem with 64k blocks.
- * Don't use it.
- */
- continue;
- fsblockloc = sblockloc;
- } else {
- fsblockloc = fs->fs_sblockloc;
- #ifdef FFS_EI
- if (needswap)
- fsblockloc = bswap64(fsblockloc);
- #endif
- }
- /* Check we haven't found an alternate superblock */
- if (fsblockloc != sblockloc)
- continue;
- /* Validate size of superblock */
- if (sbsize > MAXBSIZE || sbsize < sizeof(struct fs))
- continue;
- /* Check that we can handle the file system blocksize */
- if (fsbsize > MAXBSIZE) {
- printf("ffs_mountfs: block size (%d) > MAXBSIZE (%d)\n",
- fsbsize, MAXBSIZE);
- continue;
- }
- /* Ok seems to be a good superblock */
- break;
- }
- fs = malloc((u_long)sbsize, M_UFSMNT, M_WAITOK);
- memcpy(fs, bp->b_data, sbsize);
- ump->um_fs = fs;
- #ifdef FFS_EI
- if (needswap) {
- ffs_sb_swap((struct fs*)bp->b_data, fs);
- fs->fs_flags |= FS_SWAPPED;
- } else
- #endif
- fs->fs_flags &= ~FS_SWAPPED;
- #ifdef WAPBL
- if ((mp->mnt_wapbl_replay == 0) && (fs->fs_flags & FS_DOWAPBL)) {
- error = ffs_wapbl_replay_start(mp, fs, devvp);
- if (error && (mp->mnt_flag & MNT_FORCE) == 0)
- goto out;
- if (!error) {
- if (!ronly) {
- /* XXX fsmnt may be stale. */
- printf("%s: replaying log to disk\n",
- fs->fs_fsmnt);
- error = wapbl_replay_write(mp->mnt_wapbl_replay,
- devvp);
- if (error)
- goto out;
- wapbl_replay_stop(mp->mnt_wapbl_replay);
- fs->fs_clean = FS_WASCLEAN;
- } else {
- /* XXX fsmnt may be stale */
- printf("%s: replaying log to memory\n",
- fs->fs_fsmnt);
- }
- /* Force a re-read of the superblock */
- brelse(bp, BC_INVAL);
- bp = NULL;
- free(fs, M_UFSMNT);
- fs = NULL;
- goto sbagain;
- }
- }
- #else /* !WAPBL */
- if ((fs->fs_flags & FS_DOWAPBL) && (mp->mnt_flag & MNT_FORCE) == 0) {
- error = EPERM;
- goto out;
- }
- #endif /* !WAPBL */
- ffs_oldfscompat_read(fs, ump, sblockloc);
- ump->um_maxfilesize = fs->fs_maxfilesize;
- if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) {
- uprintf("%s: unknown ufs flags: 0x%08"PRIx32"%s\n",
- mp->mnt_stat.f_mntonname, fs->fs_flags,
- (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting");
- if ((mp->mnt_flag & MNT_FORCE) == 0) {
- error = EINVAL;
- goto out;
- }
- }
- if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) {
- fs->fs_pendingblocks = 0;
- fs->fs_pendinginodes = 0;
- }
- ump->um_fstype = fstype;
- if (fs->fs_sbsize < SBLOCKSIZE)
- brelse(bp, BC_INVAL);
- else
- brelse(bp, 0);
- bp = NULL;
- /* First check to see if this is tagged as an Apple UFS filesystem
- * in the disklabel
- */
- if (getdiskinfo(devvp, &dkw) == 0 &&
- strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0)
- ump->um_flags |= UFS_ISAPPLEUFS;
- #ifdef APPLE_UFS
- else {
- /* Manually look for an apple ufs label, and if a valid one
- * is found, then treat it like an Apple UFS filesystem anyway
- */
- error = bread(devvp, (daddr_t)(APPLEUFS_LABEL_OFFSET / DEV_BSIZE),
- APPLEUFS_LABEL_SIZE, cred, 0, &bp);
- if (error)
- goto out;
- error = ffs_appleufs_validate(fs->fs_fsmnt,
- (struct appleufslabel *)bp->b_data, NULL);
- if (error == 0) {
- ump->um_flags |= UFS_ISAPPLEUFS;
- }
- brelse(bp, 0);
- bp = NULL;
- }
- #else
- if (ump->um_flags & UFS_ISAPPLEUFS) {
- error = EINVAL;
- goto out;
- }
- #endif
- #if 0
- /*
- * XXX This code changes the behaviour of mounting dirty filesystems, to
- * XXX require "mount -f ..." to mount them. This doesn't match what
- * XXX mount(8) describes and is disabled for now.
- */
- /*
- * If the file system is not clean, don't allow it to be mounted
- * unless MNT_FORCE is specified. (Note: MNT_FORCE is always set
- * for the root file system.)
- */
- if (fs->fs_flags & FS_DOWAPBL) {
- /*
- * wapbl normally expects to be FS_WASCLEAN when the FS_DOWAPBL
- * bit is set, although there's a window in unmount where it
- * could be FS_ISCLEAN
- */
- if ((mp->mnt_flag & MNT_FORCE) == 0 &&
- (fs->fs_clean & (FS_WASCLEAN | FS_ISCLEAN)) == 0) {
- error = EPERM;
- goto out;
- }
- } else
- if ((fs->fs_clean & FS_ISCLEAN) == 0 &&
- (mp->mnt_flag & MNT_FORCE) == 0) {
- error = EPERM;
- goto out;
- }
- #endif
- /*
- * verify that we can access the last block in the fs
- * if we're mounting read/write.
- */
- if (!ronly) {
- error = bread(devvp, fsbtodb(fs, fs->fs_size - 1), fs->fs_fsize,
- cred, 0, &bp);
- if (bp->b_bcount != fs->fs_fsize)
- error = EINVAL;
- if (error) {
- bset = BC_INVAL;
- goto out;
- }
- brelse(bp, BC_INVAL);
- bp = NULL;
- }
- fs->fs_ronly = ronly;
- /* Don't bump fs_clean if we're replaying journal */
- if (!((fs->fs_flags & FS_DOWAPBL) && (fs->fs_clean & FS_WASCLEAN)))
- if (ronly == 0) {
- fs->fs_clean <<= 1;
- fs->fs_fmod = 1;
- }
- bsize = fs->fs_cssize;
- blks = howmany(bsize, fs->fs_fsize);
- if (fs->fs_contigsumsize > 0)
- bsize += fs->fs_ncg * sizeof(int32_t);
- bsize += fs->fs_ncg * sizeof(*fs->fs_contigdirs);
- space = malloc((u_long)bsize, M_UFSMNT, M_WAITOK);
- fs->fs_csp = space;
- for (i = 0; i < blks; i += fs->fs_frag) {
- bsize = fs->fs_bsize;
- if (i + fs->fs_frag > blks)
- bsize = (blks - i) * fs->fs_fsize;
- error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), bsize,
- cred, 0, &bp);
- if (error) {
- free(fs->fs_csp, M_UFSMNT);
- goto out;
- }
- #ifdef FFS_EI
- if (needswap)
- ffs_csum_swap((struct csum *)bp->b_data,
- (struct csum *)space, bsize);
- else
- #endif
- memcpy(space, bp->b_data, (u_int)bsize);
- space = (char *)space + bsize;
- brelse(bp, 0);
- bp = NULL;
- }
- if (fs->fs_contigsumsize > 0) {
- fs->fs_maxcluster = lp = space;
- for (i = 0; i < fs->fs_ncg; i++)
- *lp++ = fs->fs_contigsumsize;
- space = lp;
- }
- bsize = fs->fs_ncg * sizeof(*fs->fs_contigdirs);
- fs->fs_contigdirs = space;
- space = (char *)space + bsize;
- memset(fs->fs_contigdirs, 0, bsize);
- /* Compatibility for old filesystems - XXX */
- if (fs->fs_avgfilesize <= 0)
- fs->fs_avgfilesize = AVFILESIZ;
- if (fs->fs_avgfpdir <= 0)
- fs->fs_avgfpdir = AFPDIR;
- fs->fs_active = NULL;
- mp->mnt_data = ump;
- mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev;
- mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FFS);
- mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0];
- mp->mnt_stat.f_namemax = FFS_MAXNAMLEN;
- if (UFS_MPISAPPLEUFS(ump)) {
- /* NeXT used to keep short symlinks in the inode even
- * when using FS_42INODEFMT. In that case fs->fs_maxsymlinklen
- * is probably -1, but we still need to be able to identify
- * short symlinks.
- */
- ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN;
- ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ;
- mp->mnt_iflag |= IMNT_DTYPE;
- } else {
- ump->um_maxsymlinklen = fs->fs_maxsymlinklen;
- ump->um_dirblksiz = DIRBLKSIZ;
- if (ump->um_maxsymlinklen > 0)
- mp->mnt_iflag |= IMNT_DTYPE;
- else
- mp->mnt_iflag &= ~IMNT_DTYPE;
- }
- mp->mnt_fs_bshift = fs->fs_bshift;
- mp->mnt_dev_bshift = DEV_BSHIFT; /* XXX */
- mp->mnt_flag |= MNT_LOCAL;
- mp->mnt_iflag |= IMNT_MPSAFE;
- #ifdef FFS_EI
- if (needswap)
- ump->um_flags |= UFS_NEEDSWAP;
- #endif
- ump->um_mountp = mp;
- ump->um_dev = dev;
- ump->um_devvp = devvp;
- ump->um_nindir = fs->fs_nindir;
- ump->um_lognindir = ffs(fs->fs_nindir) - 1;
- ump->um_bptrtodb = fs->fs_fshift - DEV_BSHIFT;
- ump->um_seqinc = fs->fs_frag;
- for (i = 0; i < MAXQUOTAS; i++)
- ump->um_quotas[i] = NULLVP;
- devvp->v_specmountpoint = mp;
- if (ronly == 0 && fs->fs_snapinum[0] != 0)
- ffs_snapshot_mount(mp);
- #ifdef WAPBL
- if (!ronly) {
- KDASSERT(fs->fs_ronly == 0);
- /*
- * ffs_wapbl_start() needs mp->mnt_stat initialised if it
- * needs to create a new log file in-filesystem.
- */
- ffs_statvfs(mp, &mp->mnt_stat);
- error = ffs_wapbl_start(mp);
- if (error) {
- free(fs->fs_csp, M_UFSMNT);
- goto out;
- }
- }
- #endif /* WAPBL */
- if (ronly == 0) {
- #ifdef QUOTA2
- error = ffs_quota2_mount(mp);
- if (error) {
- free(fs->fs_csp, M_UFSMNT);
- goto out;
- }
- #else
- if (fs->fs_flags & FS_DOQUOTA2) {
- ump->um_flags |= UFS_QUOTA2;
- uprintf("%s: options QUOTA2 not enabled%s\n",
- mp->mnt_stat.f_mntonname,
- (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting");
- if ((mp->mnt_flag & MNT_FORCE) == 0) {
- error = EINVAL;
- free(fs->fs_csp, M_UFSMNT);
- goto out;
- }
- }
- #endif
- }
- #ifdef UFS_EXTATTR
- /*
- * Initialize file-backed extended attributes on UFS1 file
- * systems.
- */
- if (ump->um_fstype == UFS1)
- ufs_extattr_uepm_init(&ump->um_extattr);
- #endif /* UFS_EXTATTR */
- return (0);
- out:
- #ifdef WAPBL
- if (mp->mnt_wapbl_replay) {
- wapbl_replay_stop(mp->mnt_wapbl_replay);
- wapbl_replay_free(mp->mnt_wapbl_replay);
- mp->mnt_wapbl_replay = 0;
- }
- #endif
- fstrans_unmount(mp);
- if (fs)
- free(fs, M_UFSMNT);
- devvp->v_specmountpoint = NULL;
- if (bp)
- brelse(bp, bset);
- if (ump) {
- if (ump->um_oldfscompat)
- free(ump->um_oldfscompat, M_UFSMNT);
- mutex_destroy(&ump->um_lock);
- free(ump, M_UFSMNT);
- mp->mnt_data = NULL;
- }
- return (error);
- }
- /*
- * Sanity checks for loading old filesystem superblocks.
- * See ffs_oldfscompat_write below for unwound actions.
- *
- * XXX - Parts get retired eventually.
- * Unfortunately new bits get added.
- */
- static void
- ffs_oldfscompat_read(struct fs *fs, struct ufsmount *ump, daddr_t sblockloc)
- {
- off_t maxfilesize;
- int32_t *extrasave;
- if ((fs->fs_magic != FS_UFS1_MAGIC) ||
- (fs->fs_old_flags & FS_FLAGS_UPDATED))
- return;
- if (!ump->um_oldfscompat)
- ump->um_oldfscompat = malloc(512 + 3*sizeof(int32_t),
- M_UFSMNT, M_WAITOK);
- memcpy(ump->um_oldfscompat, &fs->fs_old_postbl_start, 512);
- extrasave = ump->um_oldfscompat;
- extrasave += 512/sizeof(int32_t);
- extrasave[0] = fs->fs_old_npsect;
- extrasave[1] = fs->fs_old_interleave;
- extrasave[2] = fs->fs_old_trackskew;
- /* These fields will be overwritten by their
- * original values in fs_oldfscompat_write, so it is harmless
- * to modify them here.
- */
- fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir;
- fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree;
- fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree;
- fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree;
- fs->fs_maxbsize = fs->fs_bsize;
- fs->fs_time = fs->fs_old_time;
- fs->fs_size = fs->fs_old_size;
- fs->fs_dsize = fs->fs_old_dsize;
- fs->fs_csaddr = fs->fs_old_csaddr;
- fs->fs_sblockloc = sblockloc;
- fs->fs_flags = fs->fs_old_flags | (fs->fs_flags & FS_INTERNAL);
- if (fs->fs_old_postblformat == FS_42POSTBLFMT) {
- fs->fs_old_nrpos = 8;
- fs->fs_old_npsect = fs->fs_old_nsect;
- fs->fs_old_interleave = 1;
- fs->fs_old_trackskew = 0;
- }
- if (fs->fs_old_inodefmt < FS_44INODEFMT) {
- fs->fs_maxfilesize = (u_quad_t) 1LL << 39;
- fs->fs_qbmask = ~fs->fs_bmask;
- fs->fs_qfmask = ~fs->fs_fmask;
- }
- maxfilesize = (u_int64_t)0x80000000 * fs->fs_bsize - 1;
- if (fs->fs_maxfilesize > maxfilesize)
- fs->fs_maxfilesize = maxfilesize;
- /* Compatibility for old filesystems */
- if (fs->fs_avgfilesize <= 0)
- fs->fs_avgfilesize = AVFILESIZ;
- if (fs->fs_avgfpdir <= 0)
- fs->fs_avgfpdir = AFPDIR;
- #if 0
- if (bigcgs) {
- fs->fs_save_cgsize = fs->fs_cgsize;
- fs->fs_cgsize = fs->fs_bsize;
- }
- #endif
- }
- /*
- * Unwinding superblock updates for old filesystems.
- * See ffs_oldfscompat_read above for details.
- *
- * XXX - Parts get retired eventually.
- * Unfortunately new bits get added.
- */
- static void
- ffs_oldfscompat_write(struct fs *fs, struct ufsmount *ump)
- {
- int32_t *extrasave;
- if ((fs->fs_magic != FS_UFS1_MAGIC) ||
- (fs->fs_old_flags & FS_FLAGS_UPDATED))
- return;
- fs->fs_old_time = fs->fs_time;
- fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir;
- fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree;
- fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree;
- fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree;
- fs->fs_old_flags = fs->fs_flags;
- #if 0
- if (bigcgs) {
- fs->fs_cgsize = fs->fs_save_cgsize;
- }
- #endif
- memcpy(&fs->fs_old_postbl_start, ump->um_oldfscompat, 512);
- extrasave = ump->um_oldfscompat;
- extrasave += 512/sizeof(int32_t);
- fs->fs_old_npsect = extrasave[0];
- fs->fs_old_interleave = extrasave[1];
- fs->fs_old_trackskew = extrasave[2];
- }
- /*
- * unmount vfs operation
- */
- int
- ffs_unmount(struct mount *mp, int mntflags)
- {
- struct lwp *l = curlwp;
- struct ufsmount *ump = VFSTOUFS(mp);
- struct fs *fs = ump->um_fs;
- int error, flags;
- #ifdef WAPBL
- extern int doforce;
- #endif
- flags = 0;
- if (mntflags & MNT_FORCE)
- flags |= FORCECLOSE;
- if ((error = ffs_flushfiles(mp, flags, l)) != 0)
- return (error);
- error = UFS_WAPBL_BEGIN(mp);
- if (error == 0)
- if (fs->fs_ronly == 0 &&
- ffs_cgupdate(ump, MNT_WAIT) == 0 &&
- fs->fs_clean & FS_WASCLEAN) {
- fs->fs_clean = FS_ISCLEAN;
- fs->fs_fmod = 0;
- (void) ffs_sbupdate(ump, MNT_WAIT);
- }
- if (error == 0)
- UFS_WAPBL_END(mp);
- #ifdef WAPBL
- KASSERT(!(mp->mnt_wapbl_replay && mp->mnt_wapbl));
- if (mp->mnt_wapbl_replay) {
- KDASSERT(fs->fs_ronly);
- wapbl_replay_stop(mp->mnt_wapbl_replay);
- wapbl_replay_free(mp->mnt_wapbl_replay);
- mp->mnt_wapbl_replay = 0;
- }
- error = ffs_wapbl_stop(mp, doforce && (mntflags & MNT_FORCE));
- if (error) {
- return error;
- }
- #endif /* WAPBL */
- #ifdef UFS_EXTATTR
- if (ump->um_fstype == UFS1) {
- ufs_extattr_stop(mp, l);
- ufs_extattr_uepm_destroy(&ump->um_extattr);
- }
- #endif /* UFS_EXTATTR */
- if (ump->um_devvp->v_type != VBAD)
- ump->um_devvp->v_specmountpoint = NULL;
- vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
- (void)VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD | FWRITE,
- NOCRED);
- vput(ump->um_devvp);
- free(fs->fs_csp, M_UFSMNT);
- free(fs, M_UFSMNT);
- if (ump->um_oldfscompat != NULL)
- free(ump->um_oldfscompat, M_UFSMNT);
- mutex_destroy(&ump->um_lock);
- ffs_snapshot_fini(ump);
- free(ump, M_UFSMNT);
- mp->mnt_data = NULL;
- mp->mnt_flag &= ~MNT_LOCAL;
- fstrans_unmount(mp);
- return (0);
- }
- /*
- * Flush out all the files in a filesystem.
- */
- int
- ffs_flushfiles(struct mount *mp, int flags, struct lwp *l)
- {
- extern int doforce;
- struct ufsmount *ump;
- int error;
- if (!doforce)
- flags &= ~FORCECLOSE;
- ump = VFSTOUFS(mp);
- #ifdef QUOTA
- if ((error = quota1_umount(mp, flags)) != 0)
- return (error);
- #endif
- #ifdef QUOTA2
- if ((error = quota2_umount(mp, flags)) != 0)
- return (error);
- #endif
- if ((error = vflush(mp, 0, SKIPSYSTEM | flags)) != 0)
- return (error);
- ffs_snapshot_unmount(mp);
- /*
- * Flush all the files.
- */
- error = vflush(mp, NULLVP, flags);
- if (error)
- return (error);
- /*
- * Flush filesystem metadata.
- */
- vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
- error = VOP_FSYNC(ump->um_devvp, l->l_cred, FSYNC_WAIT, 0, 0);
- VOP_UNLOCK(ump->um_devvp);
- if (flags & FORCECLOSE) /* XXXDBJ */
- error = 0;
- #ifdef WAPBL
- if (error)
- return error;
- if (mp->mnt_wapbl) {
- error = wapbl_flush(mp->mnt_wapbl, 1);
- if (flags & FORCECLOSE)
- error = 0;
- }
- #endif
- return (error);
- }
- /*
- * Get file system statistics.
- */
- int
- ffs_statvfs(struct mount *mp, struct statvfs *sbp)
- {
- struct ufsmount *ump;
- struct fs *fs;
- ump = VFSTOUFS(mp);
- fs = ump->um_fs;
- mutex_enter(&ump->um_lock);
- sbp->f_bsize = fs->fs_bsize;
- sbp->f_frsize = fs->fs_fsize;
- sbp->f_iosize = fs->fs_bsize;
- sbp->f_blocks = fs->fs_dsize;
- sbp->f_bfree = blkstofrags(fs, fs->fs_cstotal.cs_nbfree) +
- fs->fs_cstotal.cs_nffree + dbtofsb(fs, fs->fs_pendingblocks);
- sbp->f_bresvd = ((u_int64_t) fs->fs_dsize * (u_int64_t)
- fs->fs_minfree) / (u_int64_t) 100;
- if (sbp->f_bfree > sbp->f_bresvd)
- sbp->f_bavail = sbp->f_bfree - sbp->f_bresvd;
- else
- sbp->f_bavail = 0;
- sbp->f_files = fs->fs_ncg * fs->fs_ipg - ROOTINO;
- sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes;
- sbp->f_favail = sbp->f_ffree;
- sbp->f_fresvd = 0;
- mutex_exit(&ump->um_lock);
- copy_statvfs_info(sbp, mp);
- 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.
- *
- * Note: we are always called with the filesystem marked `MPBUSY'.
- */
- int
- ffs_sync(struct mount *mp, int waitfor, kauth_cred_t cred)
- {
- struct vnode *vp, *mvp, *nvp;
- struct inode *ip;
- struct ufsmount *ump = VFSTOUFS(mp);
- struct fs *fs;
- int error, allerror = 0;
- bool is_suspending;
- fs = ump->um_fs;
- if (fs->fs_fmod != 0 && fs->fs_ronly != 0) { /* XXX */
- printf("fs = %s\n", fs->fs_fsmnt);
- panic("update: rofs mod");
- }
- /* Allocate a marker vnode. */
- mvp = vnalloc(mp);
- fstrans_start(mp, FSTRANS_SHARED);
- is_suspending = (fstrans_getstate(mp) == FSTRANS_SUSPENDING);
- /*
- * Write back each (modified) inode.
- */
- mutex_enter(&mntvnode_lock);
- loop:
- /*
- * NOTE: not using the TAILQ_FOREACH here since in this loop vgone()
- * and vclean() can be called indirectly
- */
- for (vp = TAILQ_FIRST(&mp->mnt_vnodelist); vp; vp = nvp) {
- nvp = TAILQ_NEXT(vp, v_mntvnodes);
- /*
- * If the vnode that we are about to sync is no longer
- * associated with this mount point, start over.
- */
- if (vp->v_mount != mp)
- goto loop;
- /*
- * Don't interfere with concurrent scans of this FS.
- */
- if (vismarker(vp))
- continue;
- mutex_enter(vp->v_interlock);
- ip = VTOI(vp);
- /*
- * Skip the vnode/inode if inaccessible.
- */
- if (ip == NULL || (vp->v_iflag & (VI_XLOCK | VI_CLEAN)) != 0 ||
- vp->v_type == VNON) {
- mutex_exit(vp->v_interlock);
- continue;
- }
- /*
- * We deliberately update inode times here. This will
- * prevent a massive queue of updates accumulating, only
- * to be handled by a call to unmount.
- *
- * XXX It would be better to have the syncer trickle these
- * out. Adjustment needed to allow registering vnodes for
- * sync when the vnode is clean, but the inode dirty. Or
- * have ufs itself trickle out inode updates.
- *
- * If doing a lazy sync, we don't care about metadata or
- * data updates, because they are handled by each vnode's
- * synclist entry. In this case we are only interested in
- * writing back modified inodes.
- */
- if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE |
- IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) == 0 &&
- (waitfor == MNT_LAZY || (LIST_EMPTY(&vp->v_dirtyblkhd) &&
- UVM_OBJ_IS_CLEAN(&vp->v_uobj)))) {
- mutex_exit(vp->v_interlock);
- continue;
- }
- if (vp->v_type == VBLK && is_suspending) {
- mutex_exit(vp->v_interlock);
- continue;
- }
- vmark(mvp, vp);
- mutex_exit(&mntvnode_lock);
- error = vget(vp, LK_EXCLUSIVE | LK_NOWAIT);
- if (error) {
- mutex_enter(&mntvnode_lock);
- nvp = vunmark(mvp);
- if (error == ENOENT) {
- goto loop;
- }
- continue;
- }
- if (waitfor == MNT_LAZY) {
- error = UFS_WAPBL_BEGIN(vp->v_mount);
- if (!error) {
- error = ffs_update(vp, NULL, NULL,
- UPDATE_CLOSE);
- UFS_WAPBL_END(vp->v_mount);
- }
- } else {
- error = VOP_FSYNC(vp, cred, FSYNC_NOLOG |
- (waitfor == MNT_WAIT ? FSYNC_WAIT : 0), 0, 0);
- }
- if (error)
- allerror = error;
- vput(vp);
- mutex_enter(&mntvnode_lock);
- nvp = vunmark(mvp);
- }
- mutex_exit(&mntvnode_lock);
- /*
- * Force stale file system control information to be flushed.
- */
- if (waitfor != MNT_LAZY && (ump->um_devvp->v_numoutput > 0 ||
- !LIST_EMPTY(&ump->um_devvp->v_dirtyblkhd))) {
- vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
- if ((error = VOP_FSYNC(ump->um_devvp, cred,
- (waitfor == MNT_WAIT ? FSYNC_WAIT : 0) | FSYNC_NOLOG,
- 0, 0)) != 0)
- allerror = error;
- VOP_UNLOCK(ump->um_devvp);
- if (allerror == 0 && waitfor == MNT_WAIT && !mp->mnt_wapbl) {
- mutex_enter(&mntvnode_lock);
- goto loop;
- }
- }
- #if defined(QUOTA) || defined(QUOTA2)
- qsync(mp);
- #endif
- /*
- * Write back modified superblock.
- */
- if (fs->fs_fmod != 0) {
- fs->fs_fmod = 0;
- fs->fs_time = time_second;
- error = UFS_WAPBL_BEGIN(mp);
- if (error)
- allerror = error;
- else {
- if ((error = ffs_cgupdate(ump, waitfor)))
- allerror = error;
- UFS_WAPBL_END(mp);
- }
- }
- #ifdef WAPBL
- if (mp->mnt_wapbl) {
- error = wapbl_flush(mp->mnt_wapbl, 0);
- if (error)
- allerror = error;
- }
- #endif
- fstrans_done(mp);
- vnfree(mvp);
- 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 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, LK_EXCLUSIVE)) != NULL)
- return (0);
- /* Allocate a new vnode/inode. */
- error = getnewvnode(VT_UFS, mp, ffs_vnodeop_p, NULL, &vp);
- if (error) {
- *vpp = NULL;
- return (error);
- }
- ip = pool_cache_get(ffs_inode_cache, PR_WAITOK);
- /*
- * If someone beat us to it, put back the freshly allocated
- * vnode/inode pair and retry.
- */
- mutex_enter(&ufs_hashlock);
- if (ufs_ihashget(dev, ino, 0) != NULL) {
- mutex_exit(&ufs_hashlock);
- ungetnewvnode(vp);
- pool_cache_put(ffs_inode_cache, ip);
- goto retry;
- }
- vp->v_vflag |= VV_LOCKSWORK;
- /*
- * XXX MFS ends up here, too, to allocate an inode. Should we
- * XXX create another pool for MFS inodes?
- */
- memset(ip, 0, sizeof(struct inode));
- vp->v_data = ip;
- ip->i_vnode = vp;
- ip->i_ump = ump;
- ip->i_fs = fs = ump->um_fs;
- ip->i_dev = dev;
- ip->i_number = ino;
- #if defined(QUOTA) || defined(QUOTA2)
- ufsquota_init(ip);
- #endif
- /*
- * Initialize genfs node, we might proceed to destroy it in
- * error branches.
- */
- genfs_node_init(vp, &ffs_genfsops);
- /*
- * 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.
- */
- ufs_ihashins(ip);
- mutex_exit(&ufs_hashlock);
- /* 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, 0, &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, 0);
- *vpp = NULL;
- return (error);
- }
- if (ip->i_ump->um_fstype == UFS1)
- ip->i_din.ffs1_din = pool_cache_get(ffs_dinode1_cache,
- PR_WAITOK);
- else
- ip->i_din.ffs2_din = pool_cache_get(ffs_dinode2_cache,
- PR_WAITOK);
- ffs_load_inode(bp, ip, fs, ino);
- brelse(bp, 0);
- /*
- * Initialize the vnode from the inode, check for aliases.
- * Note that the underlying vnode may have changed.
- */
- ufs_vinit(mp, ffs_specop_p, ffs_fifoop_p, &vp);
- /*
- * Finish inode initialization now that aliasing has been resolved.
- */
- ip->i_devvp = ump->um_devvp;
- vref(ip->i_devvp);
- /*
- * Ensure that uid and gid are correct. This is a temporary
- * fix until fsck has been changed to do the update.
- */
- if (fs->fs_old_inodefmt < FS_44INODEFMT) { /* XXX */
- ip->i_uid = ip->i_ffs1_ouid; /* XXX */
- ip->i_gid = ip->i_ffs1_ogid; /* XXX */
- } /* XXX */
- uvm_vnp_setsize(vp, ip->i_size);
- *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)
- * - check that the given client host has export rights and return
- * those rights via. exflagsp and credanonp
- */
- int
- ffs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
- {
- struct ufid ufh;
- struct fs *fs;
- if (fhp->fid_len != sizeof(struct ufid))
- return EINVAL;
- memcpy(&ufh, fhp, sizeof(ufh));
- fs = VFSTOUFS(mp)->um_fs;
- if (ufh.ufid_ino < ROOTINO ||
- ufh.ufid_ino >= fs->fs_ncg * fs->fs_ipg)
- return (ESTALE);
- return (ufs_fhtovp(mp, &ufh, vpp));
- }
- /*
- * Vnode pointer to File handle
- */
- /* ARGSUSED */
- int
- ffs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size)
- {
- struct inode *ip;
- struct ufid ufh;
- if (*fh_size < sizeof(struct ufid)) {
- *fh_size = sizeof(struct ufid);
- return E2BIG;
- }
- ip = VTOI(vp);
- *fh_size = sizeof(struct ufid);
- memset(&ufh, 0, sizeof(ufh));
- ufh.ufid_len = sizeof(struct ufid);
- ufh.ufid_ino = ip->i_number;
- ufh.ufid_gen = ip->i_gen;
- memcpy(fhp, &ufh, sizeof(ufh));
- return (0);
- }
- void
- ffs_init(void)
- {
- if (ffs_initcount++ > 0)
- return;
- ffs_inode_cache = pool_cache_init(sizeof(struct inode), 0, 0, 0,
- "ffsino", NULL, IPL_NONE, NULL, NULL, NULL);
- ffs_dinode1_cache = pool_cache_init(sizeof(struct ufs1_dinode), 0, 0, 0,
- "ffsdino1", NULL, IPL_NONE, NULL, NULL, NULL);
- ffs_dinode2_cache = pool_cache_init(sizeof(struct ufs2_dinode), 0, 0, 0,
- "ffsdino2", NULL, IPL_NONE, NULL, NULL, NULL);
- ufs_init();
- }
- void
- ffs_reinit(void)
- {
- ufs_reinit();
- }
- void
- ffs_done(void)
- {
- if (--ffs_initcount > 0)
- return;
- ufs_done();
- pool_cache_destroy(ffs_dinode2_cache);
- pool_cache_destroy(ffs_dinode1_cache);
- pool_cache_destroy(ffs_inode_cache);
- }
- /*
- * Write a superblock and associated information back to disk.
- */
- int
- ffs_sbupdate(struct ufsmount *mp, int waitfor)
- {
- struct fs *fs = mp->um_fs;
- struct buf *bp;
- int error = 0;
- u_int32_t saveflag;
- error = ffs_getblk(mp->um_devvp,
- fs->fs_sblockloc / DEV_BSIZE, FFS_NOBLK,
- fs->fs_sbsize, false, &bp);
- if (error)
- return error;
- saveflag = fs->fs_flags & FS_INTERNAL;
- fs->fs_flags &= ~FS_INTERNAL;
- memcpy(bp->b_data, fs, fs->fs_sbsize);
- ffs_oldfscompat_write((struct fs *)bp->b_data, mp);
- #ifdef FFS_EI
- if (mp->um_flags & UFS_NEEDSWAP)
- ffs_sb_swap((struct fs *)bp->b_data, (struct fs *)bp->b_data);
- #endif
- fs->fs_flags |= saveflag;
- if (waitfor == MNT_WAIT)
- error = bwrite(bp);
- else
- bawrite(bp);
- return (error);
- }
- int
- ffs_cgupdate(struct ufsmount *mp, int waitfor)
- {
- struct fs *fs = mp->um_fs;
- struct buf *bp;
- int blks;
- void *space;
- int i, size, error = 0, allerror = 0;
- allerror = ffs_sbupdate(mp, waitfor);
- blks = howmany(fs->fs_cssize, fs->fs_fsize);
- space = 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 = ffs_getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i),
- FFS_NOBLK, size, false, &bp);
- if (error)
- break;
- #ifdef FFS_EI
- if (mp->um_flags & UFS_NEEDSWAP)
- ffs_csum_swap((struct csum*)space,
- (struct csum*)bp->b_data, size);
- else
- #endif
- memcpy(bp->b_data, space, (u_int)size);
- space = (char *)space + size;
- if (waitfor == MNT_WAIT)
- error = bwrite(bp);
- else
- bawrite(bp);
- }
- if (!allerror && error)
- allerror = error;
- return (allerror);
- }
- int
- ffs_extattrctl(struct mount *mp, int cmd, struct vnode *vp,
- int attrnamespace, const char *attrname)
- {
- #ifdef UFS_EXTATTR
- /*
- * File-backed extended attributes are only supported on UFS1.
- * UFS2 has native extended attributes.
- */
- if (VFSTOUFS(mp)->um_fstype == UFS1)
- return (ufs_extattrctl(mp, cmd, vp, attrnamespace, attrname));
- #endif
- return (vfs_stdextattrctl(mp, cmd, vp, attrnamespace, attrname));
- }
- int
- ffs_suspendctl(struct mount *mp, int cmd)
- {
- int error;
- struct lwp *l = curlwp;
- switch (cmd) {
- case SUSPEND_SUSPEND:
- if ((error = fstrans_setstate(mp, FSTRANS_SUSPENDING)) != 0)
- return error;
- error = ffs_sync(mp, MNT_WAIT, l->l_proc->p_cred);
- if (error == 0)
- error = fstrans_setstate(mp, FSTRANS_SUSPENDED);
- #ifdef WAPBL
- if (error == 0 && mp->mnt_wapbl)
- error = wapbl_flush(mp->mnt_wapbl, 1);
- #endif
- if (error != 0) {
- (void) fstrans_setstate(mp, FSTRANS_NORMAL);
- return error;
- }
- return 0;
- case SUSPEND_RESUME:
- return fstrans_setstate(mp, FSTRANS_NORMAL);
- default:
- return EINVAL;
- }
- }
- /*
- * Synch vnode for a mounted file system.
- */
- static int
- ffs_vfs_fsync(vnode_t *vp, int flags)
- {
- int error, i, pflags;
- #ifdef WAPBL
- struct mount *mp;
- #endif
- KASSERT(vp->v_type == VBLK);
- KASSERT(vp->v_specmountpoint != NULL);
- /*
- * Flush all dirty data associated with the vnode.
- */
- pflags = PGO_ALLPAGES | PGO_CLEANIT;
- if ((flags & FSYNC_WAIT) != 0)
- pflags |= PGO_SYNCIO;
- mutex_enter(vp->v_interlock);
- error = VOP_PUTPAGES(vp, 0, 0, pflags);
- if (error)
- return error;
- #ifdef WAPBL
- mp = vp->v_specmountpoint;
- if (mp && mp->mnt_wapbl) {
- /*
- * Don't bother writing out metadata if the syncer is
- * making the request. We will let the sync vnode
- * write it out in a single burst through a call to
- * VFS_SYNC().
- */
- if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY | FSYNC_NOLOG)) != 0)
- return 0;
- /*
- * Don't flush the log if the vnode being flushed
- * contains no dirty buffers that could be in the log.
- */
- if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
- error = wapbl_flush(mp->mnt_wapbl, 0);
- if (error)
- return error;
- }
- if ((flags & FSYNC_WAIT) != 0) {
- mutex_enter(vp->v_interlock);
- while (vp->v_numoutput)
- cv_wait(&vp->v_cv, vp->v_interlock);
- mutex_exit(vp->v_interlock);
- }
- return 0;
- }
- #endif /* WAPBL */
- error = vflushbuf(vp, (flags & FSYNC_WAIT) != 0);
- if (error == 0 && (flags & FSYNC_CACHE) != 0) {
- i = 1;
- (void)VOP_IOCTL(vp, DIOCCACHESYNC, &i, FWRITE,
- kauth_cred_get());
- }
- return error;
- }