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chfs_vfsops.c revision 1.3.2.5
      1  1.3.2.5  yamt /*	$NetBSD: chfs_vfsops.c,v 1.3.2.5 2013/01/23 00:06:31 yamt Exp $	*/
      2  1.3.2.2  yamt 
      3  1.3.2.2  yamt /*-
      4  1.3.2.2  yamt  * Copyright (c) 2010 Department of Software Engineering,
      5  1.3.2.2  yamt  *		      University of Szeged, Hungary
      6  1.3.2.2  yamt  * Copyright (C) 2010 Tamas Toth <ttoth (at) inf.u-szeged.hu>
      7  1.3.2.2  yamt  * Copyright (C) 2010 Adam Hoka <ahoka (at) NetBSD.org>
      8  1.3.2.2  yamt  * All rights reserved.
      9  1.3.2.2  yamt  *
     10  1.3.2.2  yamt  * This code is derived from software contributed to The NetBSD Foundation
     11  1.3.2.2  yamt  * by the Department of Software Engineering, University of Szeged, Hungary
     12  1.3.2.2  yamt  *
     13  1.3.2.2  yamt  * Redistribution and use in source and binary forms, with or without
     14  1.3.2.2  yamt  * modification, are permitted provided that the following conditions
     15  1.3.2.2  yamt  * are met:
     16  1.3.2.2  yamt  * 1. Redistributions of source code must retain the above copyright
     17  1.3.2.2  yamt  *    notice, this list of conditions and the following disclaimer.
     18  1.3.2.2  yamt  * 2. Redistributions in binary form must reproduce the above copyright
     19  1.3.2.2  yamt  *    notice, this list of conditions and the following disclaimer in the
     20  1.3.2.2  yamt  *    documentation and/or other materials provided with the distribution.
     21  1.3.2.2  yamt  *
     22  1.3.2.2  yamt  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  1.3.2.2  yamt  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  1.3.2.2  yamt  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  1.3.2.2  yamt  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  1.3.2.2  yamt  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     27  1.3.2.2  yamt  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     28  1.3.2.2  yamt  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     29  1.3.2.2  yamt  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     30  1.3.2.2  yamt  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  1.3.2.2  yamt  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  1.3.2.2  yamt  * SUCH DAMAGE.
     33  1.3.2.2  yamt  */
     34  1.3.2.2  yamt 
     35  1.3.2.2  yamt #include <sys/cdefs.h>
     36  1.3.2.2  yamt 
     37  1.3.2.2  yamt #include <sys/param.h>
     38  1.3.2.2  yamt #include <sys/types.h>
     39  1.3.2.2  yamt #include <sys/kmem.h>
     40  1.3.2.2  yamt #include <sys/mount.h>
     41  1.3.2.2  yamt #include <sys/stat.h>
     42  1.3.2.2  yamt #include <sys/systm.h>
     43  1.3.2.2  yamt #include <sys/proc.h>
     44  1.3.2.2  yamt #include <sys/module.h>
     45  1.3.2.2  yamt #include <sys/namei.h>
     46  1.3.2.2  yamt #include <sys/malloc.h>
     47  1.3.2.2  yamt #include <sys/fcntl.h>
     48  1.3.2.2  yamt #include <sys/conf.h>
     49  1.3.2.2  yamt #include <sys/buf.h>
     50  1.3.2.2  yamt //XXX needed just for debugging
     51  1.3.2.2  yamt #include <sys/fstrans.h>
     52  1.3.2.2  yamt #include <sys/sleepq.h>
     53  1.3.2.2  yamt #include <sys/lockdebug.h>
     54  1.3.2.2  yamt #include <sys/ktrace.h>
     55  1.3.2.2  yamt 
     56  1.3.2.2  yamt #include <uvm/uvm.h>
     57  1.3.2.2  yamt #include <uvm/uvm_pager.h>
     58  1.3.2.2  yamt #include <ufs/ufs/dir.h>
     59  1.3.2.2  yamt #include <ufs/ufs/ufs_extern.h>
     60  1.3.2.2  yamt #include <miscfs/genfs/genfs.h>
     61  1.3.2.2  yamt #include <miscfs/genfs/genfs_node.h>
     62  1.3.2.2  yamt #include <miscfs/specfs/specdev.h>
     63  1.3.2.2  yamt #include "chfs.h"
     64  1.3.2.2  yamt #include "chfs_args.h"
     65  1.3.2.2  yamt 
     66  1.3.2.2  yamt MODULE(MODULE_CLASS_VFS, chfs, "flash");
     67  1.3.2.2  yamt 
     68  1.3.2.2  yamt /* --------------------------------------------------------------------- */
     69  1.3.2.2  yamt /* functions */
     70  1.3.2.2  yamt 
     71  1.3.2.2  yamt static int chfs_mount(struct mount *, const char *, void *, size_t *);
     72  1.3.2.2  yamt static int chfs_unmount(struct mount *, int);
     73  1.3.2.2  yamt static int chfs_root(struct mount *, struct vnode **);
     74  1.3.2.2  yamt static int chfs_vget(struct mount *, ino_t, struct vnode **);
     75  1.3.2.2  yamt static int chfs_fhtovp(struct mount *, struct fid *, struct vnode **);
     76  1.3.2.2  yamt static int chfs_vptofh(struct vnode *, struct fid *, size_t *);
     77  1.3.2.2  yamt static int chfs_start(struct mount *, int);
     78  1.3.2.2  yamt static int chfs_statvfs(struct mount *, struct statvfs *);
     79  1.3.2.2  yamt static int chfs_sync(struct mount *, int, kauth_cred_t);
     80  1.3.2.2  yamt static void chfs_init(void);
     81  1.3.2.2  yamt static void chfs_reinit(void);
     82  1.3.2.2  yamt static void chfs_done(void);
     83  1.3.2.2  yamt static int chfs_snapshot(struct mount *, struct vnode *,
     84  1.3.2.2  yamt     struct timespec *);
     85  1.3.2.2  yamt 
     86  1.3.2.2  yamt /* --------------------------------------------------------------------- */
     87  1.3.2.2  yamt /* structures */
     88  1.3.2.2  yamt 
     89  1.3.2.2  yamt int
     90  1.3.2.2  yamt chfs_gop_alloc(struct vnode *vp, off_t off, off_t len,  int flags,
     91  1.3.2.2  yamt     kauth_cred_t cred)
     92  1.3.2.2  yamt {
     93  1.3.2.2  yamt 	return (0);
     94  1.3.2.2  yamt }
     95  1.3.2.2  yamt 
     96  1.3.2.2  yamt const struct genfs_ops chfs_genfsops = {
     97  1.3.2.2  yamt 	.gop_size = genfs_size,
     98  1.3.2.2  yamt 	.gop_alloc = chfs_gop_alloc,
     99  1.3.2.2  yamt 	.gop_write = genfs_gop_write,
    100  1.3.2.2  yamt 	.gop_markupdate = ufs_gop_markupdate,
    101  1.3.2.2  yamt };
    102  1.3.2.2  yamt 
    103  1.3.2.2  yamt struct pool chfs_inode_pool;
    104  1.3.2.2  yamt 
    105  1.3.2.2  yamt /* for looking up the major for flash */
    106  1.3.2.2  yamt extern const struct cdevsw flash_cdevsw;
    107  1.3.2.2  yamt 
    108  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    109  1.3.2.2  yamt 
    110  1.3.2.2  yamt static int
    111  1.3.2.2  yamt chfs_mount(struct mount *mp,
    112  1.3.2.2  yamt     const char *path, void *data, size_t *data_len)
    113  1.3.2.2  yamt {
    114  1.3.2.2  yamt 	struct lwp *l = curlwp;
    115  1.3.2.2  yamt 	struct nameidata nd;
    116  1.3.2.2  yamt 	struct pathbuf *pb;
    117  1.3.2.2  yamt 	struct vnode *devvp = NULL;
    118  1.3.2.2  yamt 	struct ufs_args *args = data;
    119  1.3.2.2  yamt 	struct ufsmount *ump = NULL;
    120  1.3.2.2  yamt 	struct chfs_mount *chmp;
    121  1.3.2.2  yamt 	int err = 0;
    122  1.3.2.2  yamt 	int xflags;
    123  1.3.2.2  yamt 
    124  1.3.2.2  yamt 	dbg("mount()\n");
    125  1.3.2.2  yamt 
    126  1.3.2.2  yamt 	if (*data_len < sizeof *args)
    127  1.3.2.2  yamt 		return EINVAL;
    128  1.3.2.2  yamt 
    129  1.3.2.2  yamt 	if (mp->mnt_flag & MNT_GETARGS) {
    130  1.3.2.2  yamt 		ump = VFSTOUFS(mp);
    131  1.3.2.2  yamt 		if (ump == NULL)
    132  1.3.2.2  yamt 			return EIO;
    133  1.3.2.2  yamt 		memset(args, 0, sizeof *args);
    134  1.3.2.2  yamt 		args->fspec = NULL;
    135  1.3.2.2  yamt 		*data_len = sizeof *args;
    136  1.3.2.2  yamt 		return 0;
    137  1.3.2.2  yamt 	}
    138  1.3.2.2  yamt 
    139  1.3.2.2  yamt 	if (mp->mnt_flag & MNT_UPDATE) {
    140  1.3.2.2  yamt 		/* XXX: There is no support yet to update file system
    141  1.3.2.2  yamt 		 * settings.  Should be added. */
    142  1.3.2.2  yamt 
    143  1.3.2.2  yamt 		return ENODEV;
    144  1.3.2.2  yamt 	}
    145  1.3.2.2  yamt 
    146  1.3.2.2  yamt 	if (args->fspec != NULL) {
    147  1.3.2.2  yamt 		err = pathbuf_copyin(args->fspec, &pb);
    148  1.3.2.2  yamt 		if (err) {
    149  1.3.2.2  yamt 			return err;
    150  1.3.2.2  yamt 		}
    151  1.3.2.4  yamt 		/* Look up the name and verify that it's sane. */
    152  1.3.2.2  yamt 		NDINIT(&nd, LOOKUP, FOLLOW, pb);
    153  1.3.2.2  yamt 		if ((err = namei(&nd)) != 0 )
    154  1.3.2.2  yamt 			return (err);
    155  1.3.2.2  yamt 		devvp = nd.ni_vp;
    156  1.3.2.2  yamt 
    157  1.3.2.4  yamt 		/* Be sure this is a valid block device */
    158  1.3.2.2  yamt 		if (devvp->v_type != VBLK)
    159  1.3.2.2  yamt 			err = ENOTBLK;
    160  1.3.2.2  yamt 		else if (bdevsw_lookup(devvp->v_rdev) == NULL)
    161  1.3.2.2  yamt 			err = ENXIO;
    162  1.3.2.2  yamt 	}
    163  1.3.2.2  yamt 
    164  1.3.2.2  yamt 	if (err) {
    165  1.3.2.2  yamt 		vrele(devvp);
    166  1.3.2.2  yamt 		return (err);
    167  1.3.2.2  yamt 	}
    168  1.3.2.2  yamt 
    169  1.3.2.2  yamt 	if (mp->mnt_flag & MNT_RDONLY)
    170  1.3.2.2  yamt 		xflags = FREAD;
    171  1.3.2.2  yamt 	else
    172  1.3.2.2  yamt 		xflags = FREAD|FWRITE;
    173  1.3.2.2  yamt 
    174  1.3.2.2  yamt 	err = VOP_OPEN(devvp, xflags, FSCRED);
    175  1.3.2.2  yamt 	if (err)
    176  1.3.2.2  yamt 		goto fail;
    177  1.3.2.2  yamt 
    178  1.3.2.4  yamt 	/* call CHFS mount function */
    179  1.3.2.2  yamt 	err = chfs_mountfs(devvp, mp);
    180  1.3.2.2  yamt 	if (err) {
    181  1.3.2.2  yamt 		vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
    182  1.3.2.2  yamt 		(void)VOP_CLOSE(devvp, xflags, NOCRED);
    183  1.3.2.2  yamt 		VOP_UNLOCK(devvp);
    184  1.3.2.2  yamt 		goto fail;
    185  1.3.2.2  yamt 	}
    186  1.3.2.4  yamt 
    187  1.3.2.2  yamt 	ump = VFSTOUFS(mp);
    188  1.3.2.2  yamt 	chmp = ump->um_chfs;
    189  1.3.2.2  yamt 
    190  1.3.2.2  yamt 	vfs_getnewfsid(mp);
    191  1.3.2.2  yamt 	chmp->chm_fsmp = mp;
    192  1.3.2.2  yamt 
    193  1.3.2.2  yamt 	return set_statvfs_info(path,
    194  1.3.2.2  yamt 	    UIO_USERSPACE, args->fspec,
    195  1.3.2.2  yamt 	    UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l);
    196  1.3.2.2  yamt 
    197  1.3.2.2  yamt fail:
    198  1.3.2.2  yamt 	vrele(devvp);
    199  1.3.2.2  yamt 	return (err);
    200  1.3.2.2  yamt }
    201  1.3.2.2  yamt 
    202  1.3.2.4  yamt /* chfs_mountfs - init CHFS */
    203  1.3.2.2  yamt int
    204  1.3.2.2  yamt chfs_mountfs(struct vnode *devvp, struct mount *mp)
    205  1.3.2.2  yamt {
    206  1.3.2.2  yamt 	struct lwp *l = curlwp;
    207  1.3.2.2  yamt 	struct proc *p;
    208  1.3.2.2  yamt 	kauth_cred_t cred;
    209  1.3.2.2  yamt 	devmajor_t flash_major;
    210  1.3.2.2  yamt 	dev_t dev;
    211  1.3.2.2  yamt 	struct ufsmount* ump = NULL;
    212  1.3.2.2  yamt 	struct chfs_mount* chmp;
    213  1.3.2.2  yamt 	struct vnode *vp;
    214  1.3.2.2  yamt 	int err = 0;
    215  1.3.2.2  yamt 
    216  1.3.2.2  yamt 	dbg("mountfs()\n");
    217  1.3.2.2  yamt 
    218  1.3.2.2  yamt 	dev = devvp->v_rdev;
    219  1.3.2.2  yamt 	p = l ? l->l_proc : NULL;
    220  1.3.2.2  yamt 	cred = l ? l->l_cred : NOCRED;
    221  1.3.2.2  yamt 
    222  1.3.2.2  yamt 	/* Flush out any old buffers remaining from a previous use. */
    223  1.3.2.2  yamt 	vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
    224  1.3.2.2  yamt 	err = vinvalbuf(devvp, V_SAVE, cred, l, 0, 0);
    225  1.3.2.2  yamt 	VOP_UNLOCK(devvp);
    226  1.3.2.2  yamt 	if (err)
    227  1.3.2.2  yamt 		return (err);
    228  1.3.2.2  yamt 
    229  1.3.2.4  yamt 	/* Setup device. */
    230  1.3.2.2  yamt 	flash_major = cdevsw_lookup_major(&flash_cdevsw);
    231  1.3.2.2  yamt 
    232  1.3.2.2  yamt 	if (devvp->v_type != VBLK)
    233  1.3.2.2  yamt 		err = ENOTBLK;
    234  1.3.2.2  yamt 	else if (bdevsw_lookup(dev) == NULL)
    235  1.3.2.2  yamt 		err = ENXIO;
    236  1.3.2.2  yamt 	else if (major(dev) != flash_major) {
    237  1.3.2.2  yamt 		dbg("major(dev): %d, flash_major: %d\n",
    238  1.3.2.2  yamt 		    major(dev), flash_major);
    239  1.3.2.2  yamt 		err = ENODEV;
    240  1.3.2.2  yamt 	}
    241  1.3.2.2  yamt 	if (err) {
    242  1.3.2.2  yamt 		vrele(devvp);
    243  1.3.2.2  yamt 		return (err);
    244  1.3.2.2  yamt 	}
    245  1.3.2.2  yamt 
    246  1.3.2.4  yamt 	/* Connect CHFS to UFS. */
    247  1.3.2.3  yamt 	ump = kmem_zalloc(sizeof(struct ufsmount), KM_SLEEP);
    248  1.3.2.3  yamt 
    249  1.3.2.2  yamt 	ump->um_fstype = UFS1;
    250  1.3.2.3  yamt 	ump->um_chfs = kmem_zalloc(sizeof(struct chfs_mount), KM_SLEEP);
    251  1.3.2.2  yamt 	mutex_init(&ump->um_lock, MUTEX_DEFAULT, IPL_NONE);
    252  1.3.2.2  yamt 
    253  1.3.2.2  yamt 	chmp = ump->um_chfs;
    254  1.3.2.2  yamt 
    255  1.3.2.4  yamt 	/* Initialize erase block handler. */
    256  1.3.2.2  yamt 	chmp->chm_ebh = kmem_alloc(sizeof(struct chfs_ebh), KM_SLEEP);
    257  1.3.2.2  yamt 
    258  1.3.2.2  yamt 	dbg("[]opening flash: %u\n", (unsigned int)devvp->v_rdev);
    259  1.3.2.2  yamt 	err = ebh_open(chmp->chm_ebh, devvp->v_rdev);
    260  1.3.2.2  yamt 	if (err) {
    261  1.3.2.2  yamt 		dbg("error while opening flash\n");
    262  1.3.2.3  yamt 		goto fail;
    263  1.3.2.2  yamt 	}
    264  1.3.2.2  yamt 
    265  1.3.2.2  yamt 	//TODO check flash sizes
    266  1.3.2.2  yamt 
    267  1.3.2.4  yamt 	/* Initialize vnode cache's hashtable and eraseblock array. */
    268  1.3.2.2  yamt 	chmp->chm_gbl_version = 0;
    269  1.3.2.2  yamt 	chmp->chm_vnocache_hash = chfs_vnocache_hash_init();
    270  1.3.2.2  yamt 
    271  1.3.2.2  yamt 	chmp->chm_blocks = kmem_zalloc(chmp->chm_ebh->peb_nr *
    272  1.3.2.2  yamt 	    sizeof(struct chfs_eraseblock), KM_SLEEP);
    273  1.3.2.2  yamt 
    274  1.3.2.4  yamt 	/* Initialize mutexes. */
    275  1.3.2.2  yamt 	mutex_init(&chmp->chm_lock_mountfields, MUTEX_DEFAULT, IPL_NONE);
    276  1.3.2.2  yamt 	mutex_init(&chmp->chm_lock_sizes, MUTEX_DEFAULT, IPL_NONE);
    277  1.3.2.2  yamt 	mutex_init(&chmp->chm_lock_vnocache, MUTEX_DEFAULT, IPL_NONE);
    278  1.3.2.2  yamt 
    279  1.3.2.4  yamt 	/* Initialize read/write contants. (from UFS) */
    280  1.3.2.2  yamt 	chmp->chm_fs_bmask = -4096;
    281  1.3.2.2  yamt 	chmp->chm_fs_bsize = 4096;
    282  1.3.2.2  yamt 	chmp->chm_fs_qbmask = 4095;
    283  1.3.2.2  yamt 	chmp->chm_fs_bshift = 12;
    284  1.3.2.2  yamt 	chmp->chm_fs_fmask = -2048;
    285  1.3.2.2  yamt 	chmp->chm_fs_qfmask = 2047;
    286  1.3.2.2  yamt 
    287  1.3.2.4  yamt 	/* Initialize writebuffer. */
    288  1.3.2.2  yamt 	chmp->chm_wbuf_pagesize = chmp->chm_ebh->flash_if->page_size;
    289  1.3.2.2  yamt 	dbg("wbuf size: %zu\n", chmp->chm_wbuf_pagesize);
    290  1.3.2.2  yamt 	chmp->chm_wbuf = kmem_alloc(chmp->chm_wbuf_pagesize, KM_SLEEP);
    291  1.3.2.2  yamt 	rw_init(&chmp->chm_lock_wbuf);
    292  1.3.2.2  yamt 
    293  1.3.2.4  yamt 	/* Initialize queues. */
    294  1.3.2.2  yamt 	TAILQ_INIT(&chmp->chm_free_queue);
    295  1.3.2.2  yamt 	TAILQ_INIT(&chmp->chm_clean_queue);
    296  1.3.2.2  yamt 	TAILQ_INIT(&chmp->chm_dirty_queue);
    297  1.3.2.2  yamt 	TAILQ_INIT(&chmp->chm_very_dirty_queue);
    298  1.3.2.2  yamt 	TAILQ_INIT(&chmp->chm_erasable_pending_wbuf_queue);
    299  1.3.2.2  yamt 	TAILQ_INIT(&chmp->chm_erase_pending_queue);
    300  1.3.2.2  yamt 
    301  1.3.2.4  yamt 	/* Initialize flash-specific constants. */
    302  1.3.2.2  yamt 	chfs_calc_trigger_levels(chmp);
    303  1.3.2.2  yamt 
    304  1.3.2.4  yamt 	/* Initialize sizes. */
    305  1.3.2.2  yamt 	chmp->chm_nr_free_blocks = 0;
    306  1.3.2.2  yamt 	chmp->chm_nr_erasable_blocks = 0;
    307  1.3.2.2  yamt 	chmp->chm_max_vno = 2;
    308  1.3.2.2  yamt 	chmp->chm_checked_vno = 2;
    309  1.3.2.2  yamt 	chmp->chm_unchecked_size = 0;
    310  1.3.2.2  yamt 	chmp->chm_used_size = 0;
    311  1.3.2.2  yamt 	chmp->chm_dirty_size = 0;
    312  1.3.2.2  yamt 	chmp->chm_wasted_size = 0;
    313  1.3.2.2  yamt 	chmp->chm_free_size = chmp->chm_ebh->eb_size * chmp->chm_ebh->peb_nr;
    314  1.3.2.4  yamt 
    315  1.3.2.4  yamt 	/* Build filesystem. */
    316  1.3.2.2  yamt 	err = chfs_build_filesystem(chmp);
    317  1.3.2.2  yamt 
    318  1.3.2.2  yamt 	if (err) {
    319  1.3.2.4  yamt 		/* Armageddon and return. */
    320  1.3.2.2  yamt 		chfs_vnocache_hash_destroy(chmp->chm_vnocache_hash);
    321  1.3.2.2  yamt 		ebh_close(chmp->chm_ebh);
    322  1.3.2.3  yamt 		err = EIO;
    323  1.3.2.3  yamt 		goto fail;
    324  1.3.2.2  yamt 	}
    325  1.3.2.2  yamt 
    326  1.3.2.4  yamt 	/* Initialize UFS. */
    327  1.3.2.2  yamt 	mp->mnt_data = ump;
    328  1.3.2.2  yamt 	mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev;
    329  1.3.2.2  yamt 	mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_CHFS);
    330  1.3.2.2  yamt 	mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0];
    331  1.3.2.2  yamt 	mp->mnt_stat.f_namemax = MAXNAMLEN;
    332  1.3.2.2  yamt 	mp->mnt_flag |= MNT_LOCAL;
    333  1.3.2.2  yamt 	mp->mnt_fs_bshift = PAGE_SHIFT;
    334  1.3.2.2  yamt 	mp->mnt_dev_bshift = DEV_BSHIFT;
    335  1.3.2.2  yamt 	mp->mnt_iflag |= IMNT_MPSAFE;
    336  1.3.2.2  yamt 	ump->um_flags = 0;
    337  1.3.2.2  yamt 	ump->um_mountp = mp;
    338  1.3.2.2  yamt 	ump->um_dev = dev;
    339  1.3.2.2  yamt 	ump->um_devvp = devvp;
    340  1.3.2.2  yamt 	ump->um_maxfilesize = 1048512 * 1024;
    341  1.3.2.4  yamt 
    342  1.3.2.4  yamt 	/* Allocate the root vnode. */
    343  1.3.2.2  yamt 	err = VFS_VGET(mp, CHFS_ROOTINO, &vp);
    344  1.3.2.2  yamt 	if (err) {
    345  1.3.2.2  yamt 		dbg("error: %d while allocating root node\n", err);
    346  1.3.2.2  yamt 		return err;
    347  1.3.2.2  yamt 	}
    348  1.3.2.2  yamt 	vput(vp);
    349  1.3.2.2  yamt 
    350  1.3.2.4  yamt 	/* Start GC. */
    351  1.3.2.2  yamt 	chfs_gc_thread_start(chmp);
    352  1.3.2.2  yamt 	mutex_enter(&chmp->chm_lock_mountfields);
    353  1.3.2.2  yamt 	chfs_gc_trigger(chmp);
    354  1.3.2.2  yamt 	mutex_exit(&chmp->chm_lock_mountfields);
    355  1.3.2.2  yamt 
    356  1.3.2.2  yamt 	devvp->v_specmountpoint = mp;
    357  1.3.2.2  yamt 	return 0;
    358  1.3.2.4  yamt 
    359  1.3.2.3  yamt fail:
    360  1.3.2.3  yamt 	kmem_free(chmp->chm_ebh, sizeof(struct chfs_ebh));
    361  1.3.2.3  yamt 	kmem_free(chmp, sizeof(struct chfs_mount));
    362  1.3.2.3  yamt 	kmem_free(ump, sizeof(struct ufsmount));
    363  1.3.2.3  yamt 	return err;
    364  1.3.2.2  yamt }
    365  1.3.2.2  yamt 
    366  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    367  1.3.2.2  yamt 
    368  1.3.2.2  yamt static int
    369  1.3.2.2  yamt chfs_unmount(struct mount *mp, int mntflags)
    370  1.3.2.2  yamt {
    371  1.3.2.2  yamt 	int flags = 0, i = 0;
    372  1.3.2.2  yamt 	struct ufsmount *ump;
    373  1.3.2.2  yamt 	struct chfs_mount *chmp;
    374  1.3.2.2  yamt 
    375  1.3.2.2  yamt 	if (mntflags & MNT_FORCE)
    376  1.3.2.2  yamt 		flags |= FORCECLOSE;
    377  1.3.2.2  yamt 
    378  1.3.2.2  yamt 	dbg("[START]\n");
    379  1.3.2.2  yamt 
    380  1.3.2.2  yamt 	ump = VFSTOUFS(mp);
    381  1.3.2.2  yamt 	chmp = ump->um_chfs;
    382  1.3.2.2  yamt 
    383  1.3.2.4  yamt 	/* Stop GC. */
    384  1.3.2.2  yamt 	chfs_gc_thread_stop(chmp);
    385  1.3.2.2  yamt 
    386  1.3.2.4  yamt 	/* Flush everyt buffer. */
    387  1.3.2.2  yamt 	(void)vflush(mp, NULLVP, flags);
    388  1.3.2.2  yamt 
    389  1.3.2.2  yamt 	if (chmp->chm_wbuf_len) {
    390  1.3.2.2  yamt 		mutex_enter(&chmp->chm_lock_mountfields);
    391  1.3.2.2  yamt 		chfs_flush_pending_wbuf(chmp);
    392  1.3.2.2  yamt 		mutex_exit(&chmp->chm_lock_mountfields);
    393  1.3.2.2  yamt 	}
    394  1.3.2.2  yamt 
    395  1.3.2.4  yamt 	/* Free node references. */
    396  1.3.2.2  yamt 	for (i = 0; i < chmp->chm_ebh->peb_nr; i++) {
    397  1.3.2.2  yamt 		chfs_free_node_refs(&chmp->chm_blocks[i]);
    398  1.3.2.2  yamt 	}
    399  1.3.2.2  yamt 
    400  1.3.2.4  yamt 	/* Destroy vnode cache hashtable. */
    401  1.3.2.2  yamt 	chfs_vnocache_hash_destroy(chmp->chm_vnocache_hash);
    402  1.3.2.2  yamt 
    403  1.3.2.4  yamt 	/* Close eraseblock handler. */
    404  1.3.2.2  yamt 	ebh_close(chmp->chm_ebh);
    405  1.3.2.2  yamt 
    406  1.3.2.4  yamt 	/* Destroy mutexes. */
    407  1.3.2.2  yamt 	rw_destroy(&chmp->chm_lock_wbuf);
    408  1.3.2.2  yamt 	mutex_destroy(&chmp->chm_lock_vnocache);
    409  1.3.2.2  yamt 	mutex_destroy(&chmp->chm_lock_sizes);
    410  1.3.2.2  yamt 	mutex_destroy(&chmp->chm_lock_mountfields);
    411  1.3.2.2  yamt 
    412  1.3.2.4  yamt 	/* Unmount UFS. */
    413  1.3.2.2  yamt 	if (ump->um_devvp->v_type != VBAD) {
    414  1.3.2.2  yamt 		ump->um_devvp->v_specmountpoint = NULL;
    415  1.3.2.2  yamt 	}
    416  1.3.2.2  yamt 	vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
    417  1.3.2.2  yamt 	(void)VOP_CLOSE(ump->um_devvp, FREAD|FWRITE, NOCRED);
    418  1.3.2.2  yamt 	vput(ump->um_devvp);
    419  1.3.2.2  yamt 
    420  1.3.2.2  yamt 	mutex_destroy(&ump->um_lock);
    421  1.3.2.2  yamt 
    422  1.3.2.4  yamt 	/* Everything done. */
    423  1.3.2.3  yamt 	kmem_free(ump, sizeof(struct ufsmount));
    424  1.3.2.2  yamt 	mp->mnt_data = NULL;
    425  1.3.2.2  yamt 	mp->mnt_flag &= ~MNT_LOCAL;
    426  1.3.2.2  yamt 	dbg("[END]\n");
    427  1.3.2.2  yamt 	return (0);
    428  1.3.2.2  yamt }
    429  1.3.2.2  yamt 
    430  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    431  1.3.2.2  yamt 
    432  1.3.2.2  yamt static int
    433  1.3.2.2  yamt chfs_root(struct mount *mp, struct vnode **vpp)
    434  1.3.2.2  yamt {
    435  1.3.2.2  yamt 	struct vnode *vp;
    436  1.3.2.2  yamt 	int error;
    437  1.3.2.2  yamt 
    438  1.3.2.5  yamt 	if ((error = VFS_VGET(mp, (ino_t)UFS_ROOTINO, &vp)) != 0)
    439  1.3.2.2  yamt 		return error;
    440  1.3.2.2  yamt 	*vpp = vp;
    441  1.3.2.2  yamt 	return 0;
    442  1.3.2.2  yamt }
    443  1.3.2.2  yamt 
    444  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    445  1.3.2.2  yamt 
    446  1.3.2.2  yamt extern rb_tree_ops_t frag_rbtree_ops;
    447  1.3.2.2  yamt 
    448  1.3.2.2  yamt static int
    449  1.3.2.2  yamt chfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
    450  1.3.2.2  yamt {
    451  1.3.2.2  yamt 	struct chfs_mount *chmp;
    452  1.3.2.2  yamt 	struct chfs_inode *ip;
    453  1.3.2.2  yamt 	struct ufsmount *ump;
    454  1.3.2.2  yamt 	struct vnode *vp;
    455  1.3.2.2  yamt 	dev_t dev;
    456  1.3.2.2  yamt 	int error;
    457  1.3.2.2  yamt 	struct chfs_vnode_cache* chvc = NULL;
    458  1.3.2.2  yamt 	struct chfs_node_ref* nref = NULL;
    459  1.3.2.2  yamt 	struct buf *bp;
    460  1.3.2.2  yamt 
    461  1.3.2.2  yamt 	dbg("vget() | ino: %llu\n", (unsigned long long)ino);
    462  1.3.2.2  yamt 
    463  1.3.2.2  yamt 	ump = VFSTOUFS(mp);
    464  1.3.2.2  yamt 	dev = ump->um_dev;
    465  1.3.2.2  yamt retry:
    466  1.3.2.2  yamt 	if (!vpp) {
    467  1.3.2.2  yamt 		vpp = kmem_alloc(sizeof(struct vnode*), KM_SLEEP);
    468  1.3.2.2  yamt 	}
    469  1.3.2.2  yamt 
    470  1.3.2.4  yamt 	/* Get node from inode hash. */
    471  1.3.2.2  yamt 	if ((*vpp = chfs_ihashget(dev, ino, LK_EXCLUSIVE)) != NULL) {
    472  1.3.2.2  yamt 		return 0;
    473  1.3.2.2  yamt 	}
    474  1.3.2.2  yamt 
    475  1.3.2.2  yamt 	/* Allocate a new vnode/inode. */
    476  1.3.2.2  yamt 	if ((error = getnewvnode(VT_CHFS,
    477  1.3.2.2  yamt 		    mp, chfs_vnodeop_p, NULL, &vp)) != 0) {
    478  1.3.2.2  yamt 		*vpp = NULL;
    479  1.3.2.2  yamt 		return (error);
    480  1.3.2.2  yamt 	}
    481  1.3.2.2  yamt 	ip = pool_get(&chfs_inode_pool, PR_WAITOK);
    482  1.3.2.2  yamt 
    483  1.3.2.2  yamt 	mutex_enter(&chfs_hashlock);
    484  1.3.2.2  yamt 	if ((*vpp = chfs_ihashget(dev, ino, LK_EXCLUSIVE)) != NULL) {
    485  1.3.2.2  yamt 		mutex_exit(&chfs_hashlock);
    486  1.3.2.2  yamt 		ungetnewvnode(vp);
    487  1.3.2.2  yamt 		pool_put(&chfs_inode_pool, ip);
    488  1.3.2.2  yamt 		goto retry;
    489  1.3.2.2  yamt 	}
    490  1.3.2.2  yamt 
    491  1.3.2.2  yamt 	vp->v_vflag |= VV_LOCKSWORK;
    492  1.3.2.2  yamt 
    493  1.3.2.4  yamt 	/* Initialize vnode/inode. */
    494  1.3.2.2  yamt 	memset(ip, 0, sizeof(*ip));
    495  1.3.2.2  yamt 	vp->v_data = ip;
    496  1.3.2.2  yamt 	ip->vp = vp;
    497  1.3.2.2  yamt 	ip->ch_type = VTTOCHT(vp->v_type);
    498  1.3.2.2  yamt 	ip->ump = ump;
    499  1.3.2.2  yamt 	ip->chmp = chmp = ump->um_chfs;
    500  1.3.2.2  yamt 	ip->dev = dev;
    501  1.3.2.2  yamt 	ip->ino = ino;
    502  1.3.2.2  yamt 	vp->v_mount = mp;
    503  1.3.2.2  yamt 	genfs_node_init(vp, &chfs_genfsops);
    504  1.3.2.2  yamt 
    505  1.3.2.2  yamt 	rb_tree_init(&ip->fragtree, &frag_rbtree_ops);
    506  1.3.2.2  yamt 
    507  1.3.2.2  yamt 	chfs_ihashins(ip);
    508  1.3.2.2  yamt 	mutex_exit(&chfs_hashlock);
    509  1.3.2.2  yamt 
    510  1.3.2.4  yamt 	/* Set root inode. */
    511  1.3.2.2  yamt 	if (ino == CHFS_ROOTINO) {
    512  1.3.2.2  yamt 		dbg("SETROOT\n");
    513  1.3.2.2  yamt 		vp->v_vflag |= VV_ROOT;
    514  1.3.2.2  yamt 		vp->v_type = VDIR;
    515  1.3.2.2  yamt 		ip->ch_type = CHT_DIR;
    516  1.3.2.2  yamt 		ip->mode = IFMT | IEXEC | IWRITE | IREAD;
    517  1.3.2.2  yamt 		ip->iflag |= (IN_ACCESS | IN_CHANGE | IN_UPDATE);
    518  1.3.2.2  yamt 		chfs_update(vp, NULL, NULL, UPDATE_WAIT);
    519  1.3.2.2  yamt 		TAILQ_INIT(&ip->dents);
    520  1.3.2.2  yamt 		chfs_set_vnode_size(vp, 512);
    521  1.3.2.2  yamt 	}
    522  1.3.2.2  yamt 
    523  1.3.2.2  yamt 	mutex_enter(&chmp->chm_lock_vnocache);
    524  1.3.2.2  yamt 	chvc = chfs_vnode_cache_get(chmp, ino);
    525  1.3.2.2  yamt 	mutex_exit(&chmp->chm_lock_vnocache);
    526  1.3.2.2  yamt 	if (!chvc) {
    527  1.3.2.2  yamt 		dbg("!chvc\n");
    528  1.3.2.4  yamt 		/* Initialize the corresponding vnode cache. */
    529  1.3.2.2  yamt 		/* XXX, we cant alloc under a lock, refactor this! */
    530  1.3.2.2  yamt 		chvc = chfs_vnode_cache_alloc(ino);
    531  1.3.2.2  yamt 		mutex_enter(&chmp->chm_lock_vnocache);
    532  1.3.2.2  yamt 		if (ino == CHFS_ROOTINO) {
    533  1.3.2.2  yamt 			chvc->nlink = 2;
    534  1.3.2.2  yamt 			chvc->pvno = CHFS_ROOTINO;
    535  1.3.2.4  yamt 			chvc->state = VNO_STATE_CHECKEDABSENT;
    536  1.3.2.2  yamt 		}
    537  1.3.2.2  yamt 		chfs_vnode_cache_add(chmp, chvc);
    538  1.3.2.2  yamt 		mutex_exit(&chmp->chm_lock_vnocache);
    539  1.3.2.2  yamt 
    540  1.3.2.2  yamt 		ip->chvc = chvc;
    541  1.3.2.2  yamt 		TAILQ_INIT(&ip->dents);
    542  1.3.2.2  yamt 	} else {
    543  1.3.2.2  yamt 		dbg("chvc\n");
    544  1.3.2.2  yamt 		ip->chvc = chvc;
    545  1.3.2.4  yamt 		/* We had a vnode cache, the node is already on flash, so read it */
    546  1.3.2.2  yamt 		if (ino == CHFS_ROOTINO) {
    547  1.3.2.2  yamt 			chvc->pvno = CHFS_ROOTINO;
    548  1.3.2.2  yamt 			TAILQ_INIT(&chvc->scan_dirents);
    549  1.3.2.2  yamt 		} else {
    550  1.3.2.2  yamt 			chfs_readvnode(mp, ino, &vp);
    551  1.3.2.2  yamt 		}
    552  1.3.2.2  yamt 
    553  1.3.2.2  yamt 		mutex_enter(&chmp->chm_lock_mountfields);
    554  1.3.2.4  yamt 		/* Initialize type specific things. */
    555  1.3.2.2  yamt 		switch (ip->ch_type) {
    556  1.3.2.2  yamt 		case CHT_DIR:
    557  1.3.2.4  yamt 			/* Read every dirent. */
    558  1.3.2.2  yamt 			nref = chvc->dirents;
    559  1.3.2.2  yamt 			while (nref &&
    560  1.3.2.2  yamt 			    (struct chfs_vnode_cache *)nref != chvc) {
    561  1.3.2.2  yamt 				chfs_readdirent(mp, nref, ip);
    562  1.3.2.2  yamt 				nref = nref->nref_next;
    563  1.3.2.2  yamt 			}
    564  1.3.2.2  yamt 			chfs_set_vnode_size(vp, 512);
    565  1.3.2.2  yamt 			break;
    566  1.3.2.2  yamt 		case CHT_REG:
    567  1.3.2.4  yamt 			/* FALLTHROUGH */
    568  1.3.2.2  yamt 		case CHT_SOCK:
    569  1.3.2.4  yamt 			/* Collect data. */
    570  1.3.2.2  yamt 			dbg("read_inode_internal | ino: %llu\n",
    571  1.3.2.2  yamt 				(unsigned long long)ip->ino);
    572  1.3.2.2  yamt 			error = chfs_read_inode(chmp, ip);
    573  1.3.2.2  yamt 			if (error) {
    574  1.3.2.2  yamt 				vput(vp);
    575  1.3.2.2  yamt 				*vpp = NULL;
    576  1.3.2.2  yamt 				mutex_exit(&chmp->chm_lock_mountfields);
    577  1.3.2.2  yamt 				return (error);
    578  1.3.2.2  yamt 			}
    579  1.3.2.2  yamt 			break;
    580  1.3.2.2  yamt 		case CHT_LNK:
    581  1.3.2.4  yamt 			/* Collect data. */
    582  1.3.2.2  yamt 			dbg("read_inode_internal | ino: %llu\n",
    583  1.3.2.2  yamt 				(unsigned long long)ip->ino);
    584  1.3.2.2  yamt 			error = chfs_read_inode_internal(chmp, ip);
    585  1.3.2.2  yamt 			if (error) {
    586  1.3.2.2  yamt 				vput(vp);
    587  1.3.2.2  yamt 				*vpp = NULL;
    588  1.3.2.2  yamt 				mutex_exit(&chmp->chm_lock_mountfields);
    589  1.3.2.2  yamt 				return (error);
    590  1.3.2.2  yamt 			}
    591  1.3.2.2  yamt 
    592  1.3.2.4  yamt 			/* Set link. */
    593  1.3.2.2  yamt 			dbg("size: %llu\n", (unsigned long long)ip->size);
    594  1.3.2.2  yamt 			bp = getiobuf(vp, true);
    595  1.3.2.2  yamt 			bp->b_blkno = 0;
    596  1.3.2.2  yamt 			bp->b_bufsize = bp->b_resid =
    597  1.3.2.2  yamt 			    bp->b_bcount = ip->size;
    598  1.3.2.2  yamt 			bp->b_data = kmem_alloc(ip->size, KM_SLEEP);
    599  1.3.2.2  yamt 			chfs_read_data(chmp, vp, bp);
    600  1.3.2.2  yamt 			if (!ip->target)
    601  1.3.2.2  yamt 				ip->target = kmem_alloc(ip->size,
    602  1.3.2.2  yamt 				    KM_SLEEP);
    603  1.3.2.2  yamt 			memcpy(ip->target, bp->b_data, ip->size);
    604  1.3.2.2  yamt 			kmem_free(bp->b_data, ip->size);
    605  1.3.2.2  yamt 			putiobuf(bp);
    606  1.3.2.2  yamt 
    607  1.3.2.2  yamt 			break;
    608  1.3.2.2  yamt 		case CHT_CHR:
    609  1.3.2.4  yamt 			/* FALLTHROUGH */
    610  1.3.2.2  yamt 		case CHT_BLK:
    611  1.3.2.4  yamt 			/* FALLTHROUGH */
    612  1.3.2.2  yamt 		case CHT_FIFO:
    613  1.3.2.4  yamt 			/* Collect data. */
    614  1.3.2.2  yamt 			dbg("read_inode_internal | ino: %llu\n",
    615  1.3.2.2  yamt 				(unsigned long long)ip->ino);
    616  1.3.2.2  yamt 			error = chfs_read_inode_internal(chmp, ip);
    617  1.3.2.2  yamt 			if (error) {
    618  1.3.2.2  yamt 				vput(vp);
    619  1.3.2.2  yamt 				*vpp = NULL;
    620  1.3.2.2  yamt 				mutex_exit(&chmp->chm_lock_mountfields);
    621  1.3.2.2  yamt 				return (error);
    622  1.3.2.2  yamt 			}
    623  1.3.2.2  yamt 
    624  1.3.2.4  yamt 			/* Set device. */
    625  1.3.2.2  yamt 			bp = getiobuf(vp, true);
    626  1.3.2.2  yamt 			bp->b_blkno = 0;
    627  1.3.2.2  yamt 			bp->b_bufsize = bp->b_resid =
    628  1.3.2.2  yamt 			    bp->b_bcount = sizeof(dev_t);
    629  1.3.2.2  yamt 			bp->b_data = kmem_alloc(sizeof(dev_t), KM_SLEEP);
    630  1.3.2.2  yamt 			chfs_read_data(chmp, vp, bp);
    631  1.3.2.2  yamt 			memcpy(&ip->rdev,
    632  1.3.2.2  yamt 			    bp->b_data, sizeof(dev_t));
    633  1.3.2.2  yamt 			kmem_free(bp->b_data, sizeof(dev_t));
    634  1.3.2.2  yamt 			putiobuf(bp);
    635  1.3.2.4  yamt 			/* Set specific operations. */
    636  1.3.2.2  yamt 			if (ip->ch_type == CHT_FIFO) {
    637  1.3.2.2  yamt 				vp->v_op = chfs_fifoop_p;
    638  1.3.2.2  yamt 			} else {
    639  1.3.2.2  yamt 				vp->v_op = chfs_specop_p;
    640  1.3.2.2  yamt 				spec_node_init(vp, ip->rdev);
    641  1.3.2.2  yamt 			}
    642  1.3.2.2  yamt 
    643  1.3.2.2  yamt 		    break;
    644  1.3.2.2  yamt 		case CHT_BLANK:
    645  1.3.2.4  yamt 			/* FALLTHROUGH */
    646  1.3.2.2  yamt 		case CHT_BAD:
    647  1.3.2.2  yamt 			break;
    648  1.3.2.2  yamt 		}
    649  1.3.2.2  yamt 		mutex_exit(&chmp->chm_lock_mountfields);
    650  1.3.2.2  yamt 
    651  1.3.2.2  yamt 	}
    652  1.3.2.2  yamt 
    653  1.3.2.4  yamt 	/* Finish inode initalization. */
    654  1.3.2.2  yamt 	ip->devvp = ump->um_devvp;
    655  1.3.2.2  yamt 	vref(ip->devvp);
    656  1.3.2.2  yamt 
    657  1.3.2.2  yamt 	uvm_vnp_setsize(vp, ip->size);
    658  1.3.2.2  yamt 	*vpp = vp;
    659  1.3.2.2  yamt 
    660  1.3.2.2  yamt 	return 0;
    661  1.3.2.2  yamt }
    662  1.3.2.2  yamt 
    663  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    664  1.3.2.2  yamt 
    665  1.3.2.2  yamt static int
    666  1.3.2.2  yamt chfs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
    667  1.3.2.2  yamt {
    668  1.3.2.2  yamt 	return ENODEV;
    669  1.3.2.2  yamt }
    670  1.3.2.2  yamt 
    671  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    672  1.3.2.2  yamt 
    673  1.3.2.2  yamt static int
    674  1.3.2.2  yamt chfs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size)
    675  1.3.2.2  yamt {
    676  1.3.2.2  yamt 	return ENODEV;
    677  1.3.2.2  yamt }
    678  1.3.2.2  yamt 
    679  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    680  1.3.2.2  yamt 
    681  1.3.2.2  yamt static int
    682  1.3.2.2  yamt chfs_start(struct mount *mp, int flags)
    683  1.3.2.2  yamt {
    684  1.3.2.2  yamt 	return 0;
    685  1.3.2.2  yamt }
    686  1.3.2.2  yamt 
    687  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    688  1.3.2.2  yamt 
    689  1.3.2.2  yamt static int
    690  1.3.2.2  yamt chfs_statvfs(struct mount *mp, struct statvfs *sbp)
    691  1.3.2.2  yamt {
    692  1.3.2.2  yamt  	struct chfs_mount *chmp;
    693  1.3.2.2  yamt 	struct ufsmount *ump;
    694  1.3.2.2  yamt 	dbg("statvfs\n");
    695  1.3.2.2  yamt 
    696  1.3.2.2  yamt 	ump = VFSTOUFS(mp);
    697  1.3.2.2  yamt 	chmp = ump->um_chfs;
    698  1.3.2.2  yamt 
    699  1.3.2.2  yamt 	sbp->f_flag   = mp->mnt_flag;
    700  1.3.2.2  yamt 	sbp->f_bsize  = chmp->chm_ebh->eb_size;
    701  1.3.2.2  yamt 	sbp->f_frsize = chmp->chm_ebh->eb_size;
    702  1.3.2.2  yamt 	sbp->f_iosize = chmp->chm_ebh->eb_size;
    703  1.3.2.2  yamt 
    704  1.3.2.2  yamt 	sbp->f_blocks = chmp->chm_ebh->peb_nr;
    705  1.3.2.2  yamt 	sbp->f_files  = 0;
    706  1.3.2.2  yamt 	sbp->f_bavail = chmp->chm_nr_free_blocks - chmp->chm_resv_blocks_write;
    707  1.3.2.2  yamt 
    708  1.3.2.2  yamt 	sbp->f_bfree = chmp->chm_nr_free_blocks;
    709  1.3.2.2  yamt 	sbp->f_bresvd = chmp->chm_resv_blocks_write;
    710  1.3.2.2  yamt 
    711  1.3.2.2  yamt 	/* FFS specific */
    712  1.3.2.2  yamt 	sbp->f_ffree  = 0;
    713  1.3.2.2  yamt 	sbp->f_favail = 0;
    714  1.3.2.2  yamt 	sbp->f_fresvd = 0;
    715  1.3.2.2  yamt 
    716  1.3.2.2  yamt 	copy_statvfs_info(sbp, mp);
    717  1.3.2.2  yamt 
    718  1.3.2.2  yamt 	return 0;
    719  1.3.2.2  yamt }
    720  1.3.2.2  yamt 
    721  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    722  1.3.2.2  yamt 
    723  1.3.2.2  yamt static int
    724  1.3.2.2  yamt chfs_sync(struct mount *mp, int waitfor,
    725  1.3.2.2  yamt     kauth_cred_t uc)
    726  1.3.2.2  yamt {
    727  1.3.2.2  yamt 	return 0;
    728  1.3.2.2  yamt }
    729  1.3.2.2  yamt 
    730  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    731  1.3.2.2  yamt 
    732  1.3.2.2  yamt static void
    733  1.3.2.2  yamt chfs_init(void)
    734  1.3.2.2  yamt {
    735  1.3.2.4  yamt 	/* Initialize pools and inode hash. */
    736  1.3.2.2  yamt 	chfs_alloc_pool_caches();
    737  1.3.2.2  yamt 	chfs_ihashinit();
    738  1.3.2.2  yamt 	pool_init(&chfs_inode_pool, sizeof(struct chfs_inode), 0, 0, 0,
    739  1.3.2.2  yamt 	    "chfsinopl", &pool_allocator_nointr, IPL_NONE);
    740  1.3.2.2  yamt 	ufs_init();
    741  1.3.2.2  yamt }
    742  1.3.2.2  yamt 
    743  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    744  1.3.2.2  yamt 
    745  1.3.2.2  yamt static void
    746  1.3.2.2  yamt chfs_reinit(void)
    747  1.3.2.2  yamt {
    748  1.3.2.2  yamt 	chfs_ihashreinit();
    749  1.3.2.2  yamt 	ufs_reinit();
    750  1.3.2.2  yamt }
    751  1.3.2.2  yamt 
    752  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    753  1.3.2.2  yamt 
    754  1.3.2.2  yamt static void
    755  1.3.2.2  yamt chfs_done(void)
    756  1.3.2.2  yamt {
    757  1.3.2.2  yamt 	ufs_done();
    758  1.3.2.2  yamt 	chfs_ihashdone();
    759  1.3.2.2  yamt 	pool_destroy(&chfs_inode_pool);
    760  1.3.2.2  yamt 	chfs_destroy_pool_caches();
    761  1.3.2.2  yamt }
    762  1.3.2.2  yamt 
    763  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    764  1.3.2.2  yamt 
    765  1.3.2.2  yamt static int
    766  1.3.2.2  yamt chfs_snapshot(struct mount *mp, struct vnode *vp,
    767  1.3.2.2  yamt     struct timespec *ctime)
    768  1.3.2.2  yamt {
    769  1.3.2.2  yamt 	return ENODEV;
    770  1.3.2.2  yamt }
    771  1.3.2.2  yamt 
    772  1.3.2.2  yamt /* --------------------------------------------------------------------- */
    773  1.3.2.2  yamt 
    774  1.3.2.2  yamt /*
    775  1.3.2.2  yamt  * chfs vfs operations.
    776  1.3.2.2  yamt  */
    777  1.3.2.2  yamt 
    778  1.3.2.2  yamt extern const struct vnodeopv_desc chfs_fifoop_opv_desc;
    779  1.3.2.2  yamt extern const struct vnodeopv_desc chfs_specop_opv_desc;
    780  1.3.2.2  yamt extern const struct vnodeopv_desc chfs_vnodeop_opv_desc;
    781  1.3.2.2  yamt 
    782  1.3.2.2  yamt const struct vnodeopv_desc * const chfs_vnodeopv_descs[] = {
    783  1.3.2.2  yamt 	&chfs_fifoop_opv_desc,
    784  1.3.2.2  yamt 	&chfs_specop_opv_desc,
    785  1.3.2.2  yamt 	&chfs_vnodeop_opv_desc,
    786  1.3.2.2  yamt 	NULL,
    787  1.3.2.2  yamt };
    788  1.3.2.2  yamt 
    789  1.3.2.2  yamt struct vfsops chfs_vfsops = {
    790  1.3.2.2  yamt 	MOUNT_CHFS,			/* vfs_name */
    791  1.3.2.2  yamt 	sizeof (struct chfs_args),
    792  1.3.2.2  yamt 	chfs_mount,			/* vfs_mount */
    793  1.3.2.2  yamt 	chfs_start,			/* vfs_start */
    794  1.3.2.2  yamt 	chfs_unmount,		/* vfs_unmount */
    795  1.3.2.2  yamt 	chfs_root,			/* vfs_root */
    796  1.3.2.4  yamt 	ufs_quotactl,		/* vfs_quotactl */
    797  1.3.2.2  yamt 	chfs_statvfs,		/* vfs_statvfs */
    798  1.3.2.2  yamt 	chfs_sync,			/* vfs_sync */
    799  1.3.2.2  yamt 	chfs_vget,			/* vfs_vget */
    800  1.3.2.2  yamt 	chfs_fhtovp,		/* vfs_fhtovp */
    801  1.3.2.2  yamt 	chfs_vptofh,		/* vfs_vptofh */
    802  1.3.2.2  yamt 	chfs_init,			/* vfs_init */
    803  1.3.2.2  yamt 	chfs_reinit,		/* vfs_reinit */
    804  1.3.2.2  yamt 	chfs_done,			/* vfs_done */
    805  1.3.2.2  yamt 	NULL,				/* vfs_mountroot */
    806  1.3.2.2  yamt 	chfs_snapshot,		/* vfs_snapshot */
    807  1.3.2.4  yamt 	vfs_stdextattrctl,	/* vfs_extattrctl */
    808  1.3.2.4  yamt 	(void *)eopnotsupp,	/* vfs_suspendctl */
    809  1.3.2.2  yamt 	genfs_renamelock_enter,
    810  1.3.2.2  yamt 	genfs_renamelock_exit,
    811  1.3.2.2  yamt 	(void *)eopnotsupp,
    812  1.3.2.2  yamt 	chfs_vnodeopv_descs,
    813  1.3.2.4  yamt 	0,					/* vfs_refcount */
    814  1.3.2.2  yamt 	{ NULL, NULL },
    815  1.3.2.2  yamt };
    816  1.3.2.2  yamt 
    817  1.3.2.4  yamt /* For using CHFS as a module. */
    818  1.3.2.2  yamt static int
    819  1.3.2.2  yamt chfs_modcmd(modcmd_t cmd, void *arg)
    820  1.3.2.2  yamt {
    821  1.3.2.2  yamt 	switch (cmd) {
    822  1.3.2.2  yamt 	case MODULE_CMD_INIT:
    823  1.3.2.2  yamt 		return vfs_attach(&chfs_vfsops);
    824  1.3.2.2  yamt 	case MODULE_CMD_FINI:
    825  1.3.2.2  yamt 		return vfs_detach(&chfs_vfsops);
    826  1.3.2.2  yamt 	default:
    827  1.3.2.2  yamt 		return ENOTTY;
    828  1.3.2.2  yamt 	}
    829  1.3.2.2  yamt }
    830