2 * Copyright (c) 2010-2012 Semihalf
3 * Copyright (c) 2008, 2009 Reinoud Zandijk
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 * From: NetBSD: nilfs_subr.c,v 1.4 2009/07/29 17:06:57 reinoud
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/namei.h>
35 #include <sys/resourcevar.h>
36 #include <sys/kernel.h>
42 #include <sys/mount.h>
43 #include <sys/vnode.h>
44 #include <sys/signalvar.h>
45 #include <sys/malloc.h>
46 #include <sys/dirent.h>
47 #include <sys/lockf.h>
48 #include <sys/libkern.h>
50 #include <geom/geom.h>
51 #include <geom/geom_vfs.h>
54 #include <vm/vm_extern.h>
56 #include <machine/_inttypes.h>
57 #include "nandfs_mount.h"
59 #include "nandfs_subr.h"
61 MALLOC_DEFINE(M_NANDFSMNT, "nandfs_mount", "NANDFS mount");;
62 MALLOC_DEFINE(M_NANDFSTEMP, "nandfs_tmt", "NANDFS tmp");
64 uma_zone_t nandfs_node_zone;
66 void nandfs_bdflush(struct bufobj *bo, struct buf *bp);
67 int nandfs_bufsync(struct bufobj *bo, int waitfor);
69 struct buf_ops buf_ops_nandfs = {
70 .bop_name = "buf_ops_nandfs",
71 .bop_write = bufwrite,
72 .bop_strategy = bufstrategy,
73 .bop_sync = nandfs_bufsync,
74 .bop_bdflush = nandfs_bdflush,
78 nandfs_bufsync(struct bufobj *bo, int waitfor)
85 ASSERT_VOP_LOCKED(vp, __func__);
86 error = nandfs_sync_file(vp);
88 nandfs_warning("%s: cannot flush buffers err:%d\n",
95 nandfs_bdflush(bo, bp)
102 if (bo->bo_dirty.bv_cnt <= ((dirtybufthresh * 8) / 10))
106 if (NANDFS_SYS_NODE(VTON(vp)->nn_ino))
109 if (NANDFS_IS_INDIRECT(bp))
112 error = nandfs_sync_file(vp);
114 nandfs_warning("%s: cannot flush buffers err:%d\n",
119 nandfs_init(struct vfsconf *vfsp)
122 nandfs_node_zone = uma_zcreate("nandfs node zone",
123 sizeof(struct nandfs_node), NULL, NULL, NULL, NULL, 0, 0);
129 nandfs_uninit(struct vfsconf *vfsp)
132 uma_zdestroy(nandfs_node_zone);
136 /* Basic calculators */
138 nandfs_get_segnum_of_block(struct nandfs_device *nandfsdev,
139 nandfs_daddr_t blocknr)
141 uint64_t segnum, blks_per_seg;
143 MPASS(blocknr >= nandfsdev->nd_fsdata.f_first_data_block);
145 blks_per_seg = nandfsdev->nd_fsdata.f_blocks_per_segment;
147 segnum = blocknr / blks_per_seg;
148 segnum -= nandfsdev->nd_fsdata.f_first_data_block / blks_per_seg;
150 DPRINTF(SYNC, ("%s: returning blocknr %jx -> segnum %jx\n", __func__,
157 nandfs_get_segment_range(struct nandfs_device *nandfsdev, uint64_t segnum,
158 uint64_t *seg_start, uint64_t *seg_end)
160 uint64_t blks_per_seg;
162 blks_per_seg = nandfsdev->nd_fsdata.f_blocks_per_segment;
163 *seg_start = nandfsdev->nd_fsdata.f_first_data_block +
164 blks_per_seg * segnum;
166 *seg_end = *seg_start + blks_per_seg -1;
169 void nandfs_calc_mdt_consts(struct nandfs_device *nandfsdev,
170 struct nandfs_mdt *mdt, int entry_size)
172 uint32_t blocksize = nandfsdev->nd_blocksize;
174 mdt->entries_per_group = blocksize * 8;
175 mdt->entries_per_block = blocksize / entry_size;
177 mdt->blocks_per_group =
178 (mdt->entries_per_group -1) / mdt->entries_per_block + 1 + 1;
179 mdt->groups_per_desc_block =
180 blocksize / sizeof(struct nandfs_block_group_desc);
181 mdt->blocks_per_desc_block =
182 mdt->groups_per_desc_block * mdt->blocks_per_group + 1;
186 nandfs_dev_bread(struct nandfs_device *nandfsdev, nandfs_lbn_t blocknr,
187 struct ucred *cred, int flags, struct buf **bpp)
189 int blk2dev = nandfsdev->nd_blocksize / DEV_BSIZE;
192 DPRINTF(BLOCK, ("%s: read from block %jx vp %p\n", __func__,
193 blocknr * blk2dev, nandfsdev->nd_devvp));
194 error = bread(nandfsdev->nd_devvp, blocknr * blk2dev,
195 nandfsdev->nd_blocksize, NOCRED, bpp);
197 nandfs_error("%s: cannot read from device - blk:%jx\n",
204 nandfs_bread(struct nandfs_node *node, nandfs_lbn_t blocknr,
205 struct ucred *cred, int flags, struct buf **bpp)
210 DPRINTF(BLOCK, ("%s: vp:%p lbn:%#jx\n", __func__, NTOV(node),
213 error = bread(NTOV(node), blocknr, node->nn_nandfsdev->nd_blocksize,
216 KASSERT(error == 0, ("%s: vp:%p lbn:%#jx err:%d\n", __func__,
217 NTOV(node), blocknr, error));
219 if (!nandfs_vblk_get(*bpp) &&
220 ((*bpp)->b_flags & B_CACHE) && node->nn_ino != NANDFS_DAT_INO) {
221 nandfs_bmap_lookup(node, blocknr, &vblk);
222 nandfs_vblk_set(*bpp, vblk);
228 nandfs_bread_meta(struct nandfs_node *node, nandfs_lbn_t blocknr,
229 struct ucred *cred, int flags, struct buf **bpp)
234 DPRINTF(BLOCK, ("%s: vp:%p lbn:%#jx\n", __func__, NTOV(node),
237 error = bread(NTOV(node), blocknr, node->nn_nandfsdev->nd_blocksize,
240 KASSERT(error == 0, ("%s: vp:%p lbn:%#jx err:%d\n", __func__,
241 NTOV(node), blocknr, error));
243 if (!nandfs_vblk_get(*bpp) &&
244 ((*bpp)->b_flags & B_CACHE) && node->nn_ino != NANDFS_DAT_INO) {
245 nandfs_bmap_lookup(node, blocknr, &vblk);
246 nandfs_vblk_set(*bpp, vblk);
253 nandfs_bdestroy(struct nandfs_node *node, nandfs_daddr_t vblk)
257 if (!NANDFS_SYS_NODE(node->nn_ino))
258 NANDFS_WRITEASSERT(node->nn_nandfsdev);
260 error = nandfs_vblock_end(node->nn_nandfsdev, vblk);
262 nandfs_error("%s: ending vblk: %jx failed\n",
263 __func__, (uintmax_t)vblk);
266 node->nn_inode.i_blocks--;
272 nandfs_bcreate(struct nandfs_node *node, nandfs_lbn_t blocknr,
273 struct ucred *cred, int flags, struct buf **bpp)
277 ASSERT_VOP_LOCKED(NTOV(node), __func__);
278 if (!NANDFS_SYS_NODE(node->nn_ino))
279 NANDFS_WRITEASSERT(node->nn_nandfsdev);
281 DPRINTF(BLOCK, ("%s: vp:%p lbn:%#jx\n", __func__, NTOV(node),
284 *bpp = getblk(NTOV(node), blocknr, node->nn_nandfsdev->nd_blocksize,
287 KASSERT((*bpp), ("%s: vp:%p lbn:%#jx\n", __func__,
288 NTOV(node), blocknr));
291 vfs_bio_clrbuf(*bpp);
292 (*bpp)->b_blkno = ~(0); /* To avoid VOP_BMAP in bdwrite */
293 error = nandfs_bmap_insert_block(node, blocknr, *bpp);
295 nandfs_warning("%s: failed bmap insert node:%p"
296 " blk:%jx\n", __func__, node, blocknr);
300 node->nn_inode.i_blocks++;
309 nandfs_bcreate_meta(struct nandfs_node *node, nandfs_lbn_t blocknr,
310 struct ucred *cred, int flags, struct buf **bpp)
312 struct nandfs_device *fsdev;
316 ASSERT_VOP_LOCKED(NTOV(node), __func__);
317 NANDFS_WRITEASSERT(node->nn_nandfsdev);
319 DPRINTF(BLOCK, ("%s: vp:%p lbn:%#jx\n", __func__, NTOV(node),
322 fsdev = node->nn_nandfsdev;
324 *bpp = getblk(NTOV(node), blocknr, node->nn_nandfsdev->nd_blocksize,
327 KASSERT((*bpp), ("%s: vp:%p lbn:%#jx\n", __func__,
328 NTOV(node), blocknr));
330 memset((*bpp)->b_data, 0, fsdev->nd_blocksize);
332 vfs_bio_clrbuf(*bpp);
333 (*bpp)->b_blkno = ~(0); /* To avoid VOP_BMAP in bdwrite */
335 nandfs_buf_set(*bpp, NANDFS_VBLK_ASSIGNED);
337 if (node->nn_ino != NANDFS_DAT_INO) {
338 error = nandfs_vblock_alloc(fsdev, &vblk);
340 nandfs_buf_clear(*bpp, NANDFS_VBLK_ASSIGNED);
345 vblk = fsdev->nd_fakevblk++;
347 nandfs_vblk_set(*bpp, vblk);
349 nandfs_bmap_insert_block(node, blocknr, *bpp);
353 /* Translate index to a file block number and an entry */
355 nandfs_mdt_trans(struct nandfs_mdt *mdt, uint64_t index,
356 nandfs_lbn_t *blocknr, uint32_t *entry_in_block)
359 uint64_t group, group_offset, blocknr_in_group;
360 uint64_t desc_block, desc_offset;
362 /* Calculate our offset in the file */
363 group = index / mdt->entries_per_group;
364 group_offset = index % mdt->entries_per_group;
365 desc_block = group / mdt->groups_per_desc_block;
366 desc_offset = group % mdt->groups_per_desc_block;
367 blocknr_in_group = group_offset / mdt->entries_per_block;
369 /* To descgroup offset */
370 blknr = 1 + desc_block * mdt->blocks_per_desc_block;
372 /* To group offset */
373 blknr += desc_offset * mdt->blocks_per_group;
375 /* To actual file block */
376 blknr += 1 + blocknr_in_group;
379 *entry_in_block = group_offset % mdt->entries_per_block;
383 nandfs_mdt_trans_blk(struct nandfs_mdt *mdt, uint64_t index,
384 uint64_t *desc, uint64_t *bitmap, nandfs_lbn_t *blocknr,
385 uint32_t *entry_in_block)
388 uint64_t group, group_offset, blocknr_in_group;
389 uint64_t desc_block, desc_offset;
391 /* Calculate our offset in the file */
392 group = index / mdt->entries_per_group;
393 group_offset = index % mdt->entries_per_group;
394 desc_block = group / mdt->groups_per_desc_block;
395 desc_offset = group % mdt->groups_per_desc_block;
396 blocknr_in_group = group_offset / mdt->entries_per_block;
398 /* To descgroup offset */
399 *desc = desc_block * mdt->blocks_per_desc_block;
400 blknr = 1 + desc_block * mdt->blocks_per_desc_block;
402 /* To group offset */
403 blknr += desc_offset * mdt->blocks_per_group;
406 /* To actual file block */
407 blknr += 1 + blocknr_in_group;
410 *entry_in_block = group_offset % mdt->entries_per_block;
413 ("%s: desc_buf: %jx bitmap_buf: %jx entry_buf: %jx entry: %x\n",
414 __func__, (uintmax_t)*desc, (uintmax_t)*bitmap,
415 (uintmax_t)*blocknr, *entry_in_block));
419 nandfs_vtop(struct nandfs_node *node, nandfs_daddr_t vblocknr,
420 nandfs_daddr_t *pblocknr)
422 struct nandfs_node *dat_node;
423 struct nandfs_dat_entry *entry;
425 nandfs_lbn_t ldatblknr;
426 uint32_t entry_in_block;
429 if (node->nn_ino == NANDFS_DAT_INO || node->nn_ino == NANDFS_GC_INO) {
430 *pblocknr = vblocknr;
434 /* only translate valid vblocknrs */
438 dat_node = node->nn_nandfsdev->nd_dat_node;
439 nandfs_mdt_trans(&node->nn_nandfsdev->nd_dat_mdt, vblocknr, &ldatblknr,
442 locked = NANDFS_VOP_ISLOCKED(NTOV(dat_node));
444 VOP_LOCK(NTOV(dat_node), LK_SHARED);
445 error = nandfs_bread(dat_node, ldatblknr, NOCRED, 0, &bp);
447 DPRINTF(TRANSLATE, ("vtop: can't read in DAT block %#jx!\n",
448 (uintmax_t)ldatblknr));
450 VOP_UNLOCK(NTOV(dat_node), 0);
454 /* Get our translation */
455 entry = ((struct nandfs_dat_entry *) bp->b_data) + entry_in_block;
456 DPRINTF(TRANSLATE, ("\tentry %p data %p entry_in_block %x\n",
457 entry, bp->b_data, entry_in_block))
458 DPRINTF(TRANSLATE, ("\tvblk %#jx -> %#jx for cp [%#jx-%#jx]\n",
459 (uintmax_t)vblocknr, (uintmax_t)entry->de_blocknr,
460 (uintmax_t)entry->de_start, (uintmax_t)entry->de_end));
462 *pblocknr = entry->de_blocknr;
465 VOP_UNLOCK(NTOV(dat_node), 0);
467 MPASS(*pblocknr >= node->nn_nandfsdev->nd_fsdata.f_first_data_block ||
474 nandfs_segsum_valid(struct nandfs_segment_summary *segsum)
477 return (segsum->ss_magic == NANDFS_SEGSUM_MAGIC);
481 nandfs_load_segsum(struct nandfs_device *fsdev, nandfs_daddr_t blocknr,
482 struct nandfs_segment_summary *segsum)
487 DPRINTF(VOLUMES, ("nandfs: try segsum at block %jx\n",
488 (uintmax_t)blocknr));
490 error = nandfs_dev_bread(fsdev, blocknr, NOCRED, 0, &bp);
494 memcpy(segsum, bp->b_data, sizeof(struct nandfs_segment_summary));
497 if (!nandfs_segsum_valid(segsum)) {
498 DPRINTF(VOLUMES, ("%s: bad magic pseg:%jx\n", __func__,
507 nandfs_load_super_root(struct nandfs_device *nandfsdev,
508 struct nandfs_segment_summary *segsum, uint64_t pseg)
510 struct nandfs_super_root super_root;
513 uint32_t super_root_crc, comp_crc;
516 /* Check if there is a superroot */
517 if ((segsum->ss_flags & NANDFS_SS_SR) == 0) {
518 DPRINTF(VOLUMES, ("%s: no super root in pseg:%jx\n", __func__,
523 /* Get our super root, located at the end of the pseg */
524 blocknr = pseg + segsum->ss_nblocks - 1;
525 DPRINTF(VOLUMES, ("%s: try at %#jx\n", __func__, (uintmax_t)blocknr));
527 error = nandfs_dev_bread(nandfsdev, blocknr, NOCRED, 0, &bp);
531 memcpy(&super_root, bp->b_data, sizeof(struct nandfs_super_root));
534 /* Check super root CRC */
535 super_root_crc = super_root.sr_sum;
536 off = sizeof(super_root.sr_sum);
537 comp_crc = crc32((uint8_t *)&super_root + off,
538 NANDFS_SR_BYTES - off);
540 if (super_root_crc != comp_crc) {
541 DPRINTF(VOLUMES, ("%s: invalid crc:%#x [expect:%#x]\n",
542 __func__, super_root_crc, comp_crc));
546 nandfsdev->nd_super_root = super_root;
547 DPRINTF(VOLUMES, ("%s: got valid superroot\n", __func__));
553 * Search for the last super root recorded.
556 nandfs_search_super_root(struct nandfs_device *nandfsdev)
558 struct nandfs_super_block *super;
559 struct nandfs_segment_summary segsum;
560 uint64_t seg_start, seg_end, cno, seq, create, pseg;
566 /* Search for last super root */
567 pseg = nandfsdev->nd_super.s_last_pseg;
568 segnum = nandfs_get_segnum_of_block(nandfsdev, pseg);
570 cno = nandfsdev->nd_super.s_last_cno;
572 DPRINTF(VOLUMES, ("%s: start in pseg %#jx\n", __func__,
576 error = nandfs_load_segsum(nandfsdev, pseg, &segsum);
580 if (segsum.ss_seq < seq || segsum.ss_create < create)
583 /* Try to load super root */
584 if (segsum.ss_flags & NANDFS_SS_SR) {
585 error = nandfs_load_super_root(nandfsdev, &segsum, pseg);
587 break; /* confused */
590 super = &nandfsdev->nd_super;
591 nandfsdev->nd_last_segsum = segsum;
592 super->s_last_pseg = pseg;
593 super->s_last_cno = cno++;
594 super->s_last_seq = segsum.ss_seq;
595 super->s_state = NANDFS_VALID_FS;
597 create = segsum.ss_create;
600 create = segsum.ss_create;
603 /* Calculate next partial segment location */
604 pseg += segsum.ss_nblocks;
605 DPRINTF(VOLUMES, ("%s: next partial seg is %jx\n", __func__,
608 /* Did we reach the end of the segment? if so, go to the next */
609 nandfs_get_segment_range(nandfsdev, segnum, &seg_start,
611 if (pseg >= seg_end) {
612 pseg = segsum.ss_next;
614 (" partial seg oor next is %jx[%jx - %jx]\n",
615 (uintmax_t)pseg, (uintmax_t)seg_start,
616 (uintmax_t)seg_end));
618 segnum = nandfs_get_segnum_of_block(nandfsdev, pseg);
628 nandfs_get_node_raw(struct nandfs_device *nandfsdev, struct nandfsmount *nmp,
629 uint64_t ino, struct nandfs_inode *inode, struct nandfs_node **nodep)
631 struct nandfs_node *node;
638 /* Associate with mountpoint if present */
640 mp = nmp->nm_vfs_mountp;
641 error = getnewvnode("nandfs", mp, &nandfs_vnodeops, &nvp);
647 error = getnewvnode("snandfs", mp, &nandfs_system_vnodeops,
655 NANDFS_WRITELOCK(nandfsdev);
657 DPRINTF(IFILE, ("%s: ino: %#jx -> vp: %p\n",
658 __func__, (uintmax_t)ino, nvp));
660 lockmgr(nvp->v_vnlock, LK_EXCLUSIVE, NULL);
663 error = insmntque(nvp, mp);
670 node = uma_zalloc(nandfs_node_zone, M_WAITOK | M_ZERO);
673 node->nn_vnode = nvp;
674 nvp->v_bufobj.bo_ops = &buf_ops_nandfs;
676 node->nn_nandfsdev = nandfsdev;
679 /* Initiase NANDFS node */
682 node->nn_inode = *inode;
684 nandfs_vinit(nvp, ino);
688 DPRINTF(IFILE, ("%s: ino:%#jx vp:%p node:%p\n",
689 __func__, (uintmax_t)ino, nvp, *nodep));
695 nandfs_get_node(struct nandfsmount *nmp, uint64_t ino,
696 struct nandfs_node **nodep)
698 struct nandfs_device *nandfsdev;
699 struct nandfs_inode inode, *entry;
700 struct vnode *nvp, *vpp;
704 uint32_t entry_in_block;
707 /* Look up node in hash table */
711 if ((ino < NANDFS_ATIME_INO) && (ino != NANDFS_ROOT_INO)) {
712 printf("nandfs_get_node: system ino %"PRIu64" not in mount "
717 error = vfs_hash_get(nmp->nm_vfs_mountp, ino, LK_EXCLUSIVE, td, &nvp,
723 *nodep = (struct nandfs_node *)nvp->v_data;
727 /* Look up inode structure in mountpoints ifile */
728 nandfsdev = nmp->nm_nandfsdev;
729 nandfs_mdt_trans(&nandfsdev->nd_ifile_mdt, ino, &ivblocknr,
732 VOP_LOCK(NTOV(nmp->nm_ifile_node), LK_SHARED);
733 error = nandfs_bread(nmp->nm_ifile_node, ivblocknr, NOCRED, 0, &bp);
736 VOP_UNLOCK(NTOV(nmp->nm_ifile_node), 0);
740 /* Get inode entry */
741 entry = (struct nandfs_inode *) bp->b_data + entry_in_block;
742 memcpy(&inode, entry, sizeof(struct nandfs_inode));
744 VOP_UNLOCK(NTOV(nmp->nm_ifile_node), 0);
747 error = nandfs_get_node_raw(nmp->nm_nandfsdev, nmp, ino, &inode, nodep);
753 nvp = (*nodep)->nn_vnode;
754 error = vfs_hash_insert(nvp, ino, 0, td, &vpp, NULL, NULL);
764 nandfs_dispose_node(struct nandfs_node **nodep)
766 struct nandfs_node *node;
769 /* Protect against rogue values */
774 DPRINTF(NODE, ("nandfs_dispose_node: %p\n", *nodep));
779 /* Free our associated memory */
780 uma_zfree(nandfs_node_zone, node);
786 nandfs_lookup_name_in_dir(struct vnode *dvp, const char *name, int namelen,
787 uint64_t *ino, int *found, uint64_t *off)
789 struct nandfs_node *dir_node = VTON(dvp);
790 struct nandfs_dir_entry *ndirent;
792 uint64_t file_size, diroffset, blkoff;
794 uint32_t blocksize = dir_node->nn_nandfsdev->nd_blocksize;
795 uint8_t *pos, name_len;
800 DPRINTF(VNCALL, ("%s: %s file\n", __func__, name));
801 if (dvp->v_type != VDIR) {
805 /* Get directory filesize */
806 file_size = dir_node->nn_inode.i_size;
808 /* Walk the directory */
812 error = nandfs_bread(dir_node, blocknr, NOCRED, 0, &bp);
818 while (diroffset < file_size) {
819 if (blkoff >= blocksize) {
820 blkoff = 0; blocknr++;
822 error = nandfs_bread(dir_node, blocknr, NOCRED, 0,
830 /* Read in one dirent */
831 pos = (uint8_t *) bp->b_data + blkoff;
832 ndirent = (struct nandfs_dir_entry *) pos;
833 name_len = ndirent->name_len;
835 if ((name_len == namelen) &&
836 (strncmp(name, ndirent->name, name_len) == 0) &&
837 (ndirent->inode != 0)) {
838 *ino = ndirent->inode;
840 DPRINTF(LOOKUP, ("found `%.*s` with ino %"PRIx64"\n",
841 name_len, ndirent->name, *ino));
847 diroffset += ndirent->rec_len;
848 blkoff += ndirent->rec_len;
856 nandfs_get_fsinfo(struct nandfsmount *nmp, struct nandfs_fsinfo *fsinfo)
858 struct nandfs_device *fsdev;
860 fsdev = nmp->nm_nandfsdev;
862 memcpy(&fsinfo->fs_fsdata, &fsdev->nd_fsdata, sizeof(fsdev->nd_fsdata));
863 memcpy(&fsinfo->fs_super, &fsdev->nd_super, sizeof(fsdev->nd_super));
864 snprintf(fsinfo->fs_dev, sizeof(fsinfo->fs_dev),
865 "%s", nmp->nm_vfs_mountp->mnt_stat.f_mntfromname);
871 nandfs_inode_init(struct nandfs_inode *inode, uint16_t mode)
879 inode->i_ctime = ts.tv_sec;
880 inode->i_ctime_nsec = ts.tv_nsec;
881 inode->i_mtime = ts.tv_sec;
882 inode->i_mtime_nsec = ts.tv_nsec;
883 inode->i_mode = mode;
884 inode->i_links_count = 1;
886 inode->i_links_count = 2;
889 inode->i_special = 0;
890 memset(inode->i_db, 0, sizeof(inode->i_db));
891 memset(inode->i_ib, 0, sizeof(inode->i_ib));
895 nandfs_inode_destroy(struct nandfs_inode *inode)
898 MPASS(inode->i_blocks == 0);
899 bzero(inode, sizeof(*inode));
903 nandfs_fs_full(struct nandfs_device *nffsdev)
907 bps = nffsdev->nd_fsdata.f_blocks_per_segment;
908 space = (nffsdev->nd_clean_segs - 1) * bps;
910 DPRINTF(BUF, ("%s: bufs:%jx space:%jx\n", __func__,
911 (uintmax_t)nffsdev->nd_dirty_bufs, (uintmax_t)space));
913 if (nffsdev->nd_dirty_bufs + (10 * bps) >= space)
920 _nandfs_dirty_buf(struct buf *bp, int dirty_meta, int force)
922 struct nandfs_device *nffsdev;
923 struct nandfs_node *node;
926 if (NANDFS_ISGATHERED(bp)) {
930 if ((bp->b_flags & (B_MANAGED | B_DELWRI)) == (B_MANAGED | B_DELWRI)) {
935 node = VTON(bp->b_vp);
936 nffsdev = node->nn_nandfsdev;
937 DPRINTF(BUF, ("%s: buf:%p\n", __func__, bp));
940 if (nandfs_fs_full(nffsdev) && !NANDFS_SYS_NODE(ino) && !force) {
945 bp->b_flags |= B_MANAGED;
948 nandfs_dirty_bufs_increment(nffsdev);
950 KASSERT((bp->b_vp), ("vp missing for bp"));
951 KASSERT((nandfs_vblk_get(bp) || ino == NANDFS_DAT_INO),
955 * To maintain consistency of FS we need to force making
956 * meta buffers dirty, even if free space is low.
958 if (dirty_meta && ino != NANDFS_GC_INO)
959 nandfs_bmap_dirty_blocks(VTON(bp->b_vp), bp, 1);
961 bps = nffsdev->nd_fsdata.f_blocks_per_segment;
963 if (nffsdev->nd_dirty_bufs >= (bps * nandfs_max_dirty_segs)) {
964 mtx_lock(&nffsdev->nd_sync_mtx);
965 if (nffsdev->nd_syncing == 0) {
966 DPRINTF(SYNC, ("%s: wakeup gc\n", __func__));
967 nffsdev->nd_syncing = 1;
968 wakeup(&nffsdev->nd_syncing);
970 mtx_unlock(&nffsdev->nd_sync_mtx);
977 nandfs_dirty_buf(struct buf *bp, int force)
980 return (_nandfs_dirty_buf(bp, 1, force));
984 nandfs_dirty_buf_meta(struct buf *bp, int force)
987 return (_nandfs_dirty_buf(bp, 0, force));
991 nandfs_undirty_buf_fsdev(struct nandfs_device *nffsdev, struct buf *bp)
996 if (bp->b_flags & B_DELWRI) {
997 bp->b_flags &= ~(B_DELWRI|B_MANAGED);
998 nandfs_dirty_bufs_decrement(nffsdev);
1001 * Since it is now being written, we can clear its deferred write flag.
1003 bp->b_flags &= ~B_DEFERRED;
1009 nandfs_undirty_buf(struct buf *bp)
1011 struct nandfs_node *node;
1013 node = VTON(bp->b_vp);
1015 nandfs_undirty_buf_fsdev(node->nn_nandfsdev, bp);
1019 nandfs_vblk_set(struct buf *bp, nandfs_daddr_t blocknr)
1022 nandfs_daddr_t *vblk = (nandfs_daddr_t *)(&bp->b_fsprivate1);
1027 nandfs_vblk_get(struct buf *bp)
1030 nandfs_daddr_t *vblk = (nandfs_daddr_t *)(&bp->b_fsprivate1);
1035 nandfs_buf_set(struct buf *bp, uint32_t bits)
1039 flags = (uintptr_t)bp->b_fsprivate3;
1040 flags |= (uintptr_t)bits;
1041 bp->b_fsprivate3 = (void *)flags;
1045 nandfs_buf_clear(struct buf *bp, uint32_t bits)
1049 flags = (uintptr_t)bp->b_fsprivate3;
1050 flags &= ~(uintptr_t)bits;
1051 bp->b_fsprivate3 = (void *)flags;
1055 nandfs_buf_check(struct buf *bp, uint32_t bits)
1059 flags = (uintptr_t)bp->b_fsprivate3;
1066 nandfs_erase(struct nandfs_device *fsdev, off_t offset, size_t size)
1069 int read_size, error, i;
1071 DPRINTF(BLOCK, ("%s: performing erase at offset %jx size %zx\n",
1072 __func__, offset, size));
1074 MPASS(size % fsdev->nd_erasesize == 0);
1076 if (fsdev->nd_is_nand) {
1077 error = g_delete_data(fsdev->nd_gconsumer, offset, size);
1081 if (size > MAXBSIZE)
1082 read_size = MAXBSIZE;
1087 for (i = 0; i < size / MAXBSIZE; i++) {
1088 error = bread(fsdev->nd_devvp, btodb(offset + i * read_size),
1089 read_size, NOCRED, &bp);
1094 memset(bp->b_data, 0xff, read_size);
1097 nandfs_error("%s: err:%d from bwrite\n",
1107 nandfs_vop_islocked(struct vnode *vp)
1111 islocked = VOP_ISLOCKED(vp);
1112 return (islocked == LK_EXCLUSIVE || islocked == LK_SHARED);
1116 nandfs_block_to_dblock(struct nandfs_device *fsdev, nandfs_lbn_t block)
1119 return (btodb(block * fsdev->nd_blocksize));