2 * Copyright (c) 2011-2014 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@dragonflybsd.org>
6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org>
7 * by Daniel Flores (GSOC 2013 - mentored by Matthew Dillon, compression)
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
19 * 3. Neither the name of The DragonFly Project nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific, prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
27 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
31 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
33 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * Kernel Filesystem interface
39 * NOTE! local ipdata pointers must be reloaded on any modifying operation
40 * to the inode as its underlying chain may have changed.
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/kernel.h>
46 #include <sys/fcntl.h>
49 #include <sys/namei.h>
50 #include <sys/mount.h>
51 #include <sys/vnode.h>
52 #include <sys/mountctl.h>
53 #include <sys/dirent.h>
55 #include <sys/objcache.h>
56 #include <sys/event.h>
58 #include <vfs/fifofs/fifo.h>
61 #include "hammer2_lz4.h"
63 #include "zlib/hammer2_zlib.h"
65 #define ZFOFFSET (-2LL)
67 static int hammer2_read_file(hammer2_inode_t *ip, struct uio *uio,
69 static int hammer2_write_file(hammer2_inode_t *ip, struct uio *uio,
70 int ioflag, int seqcount);
71 static void hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize);
72 static void hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize);
74 struct objcache *cache_buffer_read;
75 struct objcache *cache_buffer_write;
78 * Callback used in read path in case that a block is compressed with LZ4.
82 hammer2_decompress_LZ4_callback(const char *data, u_int bytes, struct bio *bio)
85 char *compressed_buffer;
92 if bio->bio_caller_info2.index &&
93 bio->bio_caller_info1.uvalue32 !=
94 crc32(bp->b_data, bp->b_bufsize) --- return error
97 KKASSERT(bp->b_bufsize <= HAMMER2_PBUFSIZE);
98 compressed_size = *(const int *)data;
99 KKASSERT(compressed_size <= bytes - sizeof(int));
101 compressed_buffer = objcache_get(cache_buffer_read, M_INTWAIT);
102 result = LZ4_decompress_safe(__DECONST(char *, &data[sizeof(int)]),
107 kprintf("READ PATH: Error during decompression."
109 (intmax_t)bio->bio_offset, bytes);
110 /* make sure it isn't random garbage */
111 bzero(compressed_buffer, bp->b_bufsize);
113 KKASSERT(result <= bp->b_bufsize);
114 bcopy(compressed_buffer, bp->b_data, bp->b_bufsize);
115 if (result < bp->b_bufsize)
116 bzero(bp->b_data + result, bp->b_bufsize - result);
117 objcache_put(cache_buffer_read, compressed_buffer);
119 bp->b_flags |= B_AGE;
123 * Callback used in read path in case that a block is compressed with ZLIB.
124 * It is almost identical to LZ4 callback, so in theory they can be unified,
125 * but we didn't want to make changes in bio structure for that.
129 hammer2_decompress_ZLIB_callback(const char *data, u_int bytes, struct bio *bio)
132 char *compressed_buffer;
133 z_stream strm_decompress;
139 KKASSERT(bp->b_bufsize <= HAMMER2_PBUFSIZE);
140 strm_decompress.avail_in = 0;
141 strm_decompress.next_in = Z_NULL;
143 ret = inflateInit(&strm_decompress);
146 kprintf("HAMMER2 ZLIB: Fatal error in inflateInit.\n");
148 compressed_buffer = objcache_get(cache_buffer_read, M_INTWAIT);
149 strm_decompress.next_in = __DECONST(char *, data);
151 /* XXX supply proper size, subset of device bp */
152 strm_decompress.avail_in = bytes;
153 strm_decompress.next_out = compressed_buffer;
154 strm_decompress.avail_out = bp->b_bufsize;
156 ret = inflate(&strm_decompress, Z_FINISH);
157 if (ret != Z_STREAM_END) {
158 kprintf("HAMMER2 ZLIB: Fatar error during decompression.\n");
159 bzero(compressed_buffer, bp->b_bufsize);
161 bcopy(compressed_buffer, bp->b_data, bp->b_bufsize);
162 result = bp->b_bufsize - strm_decompress.avail_out;
163 if (result < bp->b_bufsize)
164 bzero(bp->b_data + result, strm_decompress.avail_out);
165 objcache_put(cache_buffer_read, compressed_buffer);
166 ret = inflateEnd(&strm_decompress);
169 bp->b_flags |= B_AGE;
174 hammer2_knote(struct vnode *vp, int flags)
177 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, flags);
181 * Last reference to a vnode is going away but it is still cached.
185 hammer2_vop_inactive(struct vop_inactive_args *ap)
188 hammer2_cluster_t *cluster;
205 * Detect updates to the embedded data which may be synchronized by
206 * the strategy code. Simply mark the inode modified so it gets
207 * picked up by our normal flush.
209 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_NEVER |
210 HAMMER2_RESOLVE_RDONLY);
214 * Check for deleted inodes and recycle immediately.
216 * WARNING: nvtruncbuf() can only be safely called without the inode
217 * lock held due to the way our write thread works.
219 if (hammer2_cluster_isunlinked(cluster)) {
223 nblksize = hammer2_calc_logical(ip, 0, &lbase, NULL);
224 hammer2_inode_unlock(ip, cluster);
225 nvtruncbuf(vp, 0, nblksize, 0, 0);
228 hammer2_inode_unlock(ip, cluster);
235 * Reclaim a vnode so that it can be reused; after the inode is
236 * disassociated, the filesystem must manage it alone.
240 hammer2_vop_reclaim(struct vop_reclaim_args *ap)
242 hammer2_cluster_t *cluster;
256 * Inode must be locked for reclaim.
259 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_NEVER |
260 HAMMER2_RESOLVE_RDONLY);
263 * The final close of a deleted file or directory marks it for
264 * destruction. The DELETED flag allows the flusher to shortcut
265 * any modified blocks still unflushed (that is, just ignore them).
267 * HAMMER2 usually does not try to optimize the freemap by returning
268 * deleted blocks to it as it does not usually know how many snapshots
269 * might be referencing portions of the file/dir.
275 * NOTE! We do not attempt to flush chains here, flushing is
276 * really fragile and could also deadlock.
281 * A reclaim can occur at any time so we cannot safely start a
282 * transaction to handle reclamation of unlinked files. Instead,
283 * the ip is left with a reference and placed on a linked list and
286 if (hammer2_cluster_isunlinked(cluster)) {
287 hammer2_inode_unlink_t *ipul;
289 ipul = kmalloc(sizeof(*ipul), pmp->minode, M_WAITOK | M_ZERO);
292 hammer2_spin_ex(&pmp->list_spin);
293 TAILQ_INSERT_TAIL(&pmp->unlinkq, ipul, entry);
294 hammer2_spin_unex(&pmp->list_spin);
295 hammer2_inode_unlock(ip, cluster); /* unlock */
296 /* retain ref from vp for ipul */
298 hammer2_inode_unlock(ip, cluster); /* unlock */
299 hammer2_inode_drop(ip); /* vp ref */
301 /* cluster no longer referenced */
302 /* cluster = NULL; not needed */
305 * XXX handle background sync when ip dirty, kernel will no longer
306 * notify us regarding this inode because there is no longer a
307 * vnode attached to it.
316 hammer2_vop_fsync(struct vop_fsync_args *ap)
319 hammer2_trans_t trans;
320 hammer2_cluster_t *cluster;
328 /* XXX can't do this yet */
329 hammer2_trans_init(&trans, ip->pmp, HAMMER2_TRANS_ISFLUSH);
330 vfsync(vp, ap->a_waitfor, 1, NULL, NULL);
332 hammer2_trans_init(&trans, ip->pmp, 0);
333 vfsync(vp, ap->a_waitfor, 1, NULL, NULL);
336 * Calling chain_flush here creates a lot of duplicative
337 * COW operations due to non-optimal vnode ordering.
339 * Only do it for an actual fsync() syscall. The other forms
340 * which call this function will eventually call chain_flush
341 * on the volume root as a catch-all, which is far more optimal.
343 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS);
344 atomic_clear_int(&ip->flags, HAMMER2_INODE_MODIFIED);
346 if (ip->flags & (HAMMER2_INODE_RESIZED|HAMMER2_INODE_MTIME))
347 hammer2_inode_fsync(&trans, ip, cluster);
349 hammer2_inode_unlock(ip, cluster);
350 hammer2_trans_done(&trans);
358 hammer2_vop_access(struct vop_access_args *ap)
360 hammer2_inode_t *ip = VTOI(ap->a_vp);
361 const hammer2_inode_data_t *ripdata;
362 hammer2_cluster_t *cluster;
368 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS |
369 HAMMER2_RESOLVE_SHARED);
370 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
371 uid = hammer2_to_unix_xid(&ripdata->uid);
372 gid = hammer2_to_unix_xid(&ripdata->gid);
373 error = vop_helper_access(ap, uid, gid, ripdata->mode, ripdata->uflags);
374 hammer2_inode_unlock(ip, cluster);
382 hammer2_vop_getattr(struct vop_getattr_args *ap)
384 const hammer2_inode_data_t *ripdata;
385 hammer2_cluster_t *cluster;
388 hammer2_blockref_t bref;
399 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS |
400 HAMMER2_RESOLVE_SHARED);
401 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
402 KKASSERT(hammer2_cluster_type(cluster) == HAMMER2_BREF_TYPE_INODE);
403 hammer2_cluster_bref(cluster, &bref);
405 vap->va_fsid = pmp->mp->mnt_stat.f_fsid.val[0];
406 vap->va_fileid = ripdata->inum;
407 vap->va_mode = ripdata->mode;
408 vap->va_nlink = ripdata->nlinks;
409 vap->va_uid = hammer2_to_unix_xid(&ripdata->uid);
410 vap->va_gid = hammer2_to_unix_xid(&ripdata->gid);
413 vap->va_size = ip->size; /* protected by shared lock */
414 vap->va_blocksize = HAMMER2_PBUFSIZE;
415 vap->va_flags = ripdata->uflags;
416 hammer2_time_to_timespec(ripdata->ctime, &vap->va_ctime);
417 hammer2_time_to_timespec(ripdata->mtime, &vap->va_mtime);
418 hammer2_time_to_timespec(ripdata->mtime, &vap->va_atime);
420 vap->va_bytes = bref.data_count;
421 vap->va_type = hammer2_get_vtype(ripdata);
423 vap->va_uid_uuid = ripdata->uid;
424 vap->va_gid_uuid = ripdata->gid;
425 vap->va_vaflags = VA_UID_UUID_VALID | VA_GID_UUID_VALID |
428 hammer2_inode_unlock(ip, cluster);
436 hammer2_vop_setattr(struct vop_setattr_args *ap)
438 const hammer2_inode_data_t *ripdata;
439 hammer2_inode_data_t *wipdata;
441 hammer2_cluster_t *cluster;
442 hammer2_trans_t trans;
454 hammer2_update_time(&ctime);
458 if (ip->pmp->ronly) {
463 hammer2_pfs_memory_wait(ip->pmp);
464 hammer2_trans_init(&trans, ip->pmp, 0);
465 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS);
466 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
469 if (vap->va_flags != VNOVAL) {
472 flags = ripdata->uflags;
473 error = vop_helper_setattr_flags(&flags, vap->va_flags,
474 hammer2_to_unix_xid(&ripdata->uid),
477 if (ripdata->uflags != flags) {
478 wipdata = hammer2_cluster_modify_ip(&trans, ip,
480 wipdata->uflags = flags;
481 wipdata->ctime = ctime;
482 kflags |= NOTE_ATTRIB;
486 if (ripdata->uflags & (IMMUTABLE | APPEND)) {
493 if (ripdata->uflags & (IMMUTABLE | APPEND)) {
497 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
498 mode_t cur_mode = ripdata->mode;
499 uid_t cur_uid = hammer2_to_unix_xid(&ripdata->uid);
500 gid_t cur_gid = hammer2_to_unix_xid(&ripdata->gid);
504 error = vop_helper_chown(ap->a_vp, vap->va_uid, vap->va_gid,
506 &cur_uid, &cur_gid, &cur_mode);
508 hammer2_guid_to_uuid(&uuid_uid, cur_uid);
509 hammer2_guid_to_uuid(&uuid_gid, cur_gid);
510 if (bcmp(&uuid_uid, &ripdata->uid, sizeof(uuid_uid)) ||
511 bcmp(&uuid_gid, &ripdata->gid, sizeof(uuid_gid)) ||
512 ripdata->mode != cur_mode
514 wipdata = hammer2_cluster_modify_ip(&trans, ip,
516 wipdata->uid = uuid_uid;
517 wipdata->gid = uuid_gid;
518 wipdata->mode = cur_mode;
519 wipdata->ctime = ctime;
523 kflags |= NOTE_ATTRIB;
530 if (vap->va_size != VNOVAL && ip->size != vap->va_size) {
533 if (vap->va_size == ip->size)
535 hammer2_inode_unlock(ip, cluster);
536 if (vap->va_size < ip->size) {
537 hammer2_truncate_file(ip, vap->va_size);
539 hammer2_extend_file(ip, vap->va_size);
541 cluster = hammer2_inode_lock(ip,
542 HAMMER2_RESOLVE_ALWAYS);
544 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
553 /* atime not supported */
554 if (vap->va_atime.tv_sec != VNOVAL) {
555 wipdata = hammer2_cluster_modify_ip(&trans, ip, cluster, 0);
556 wipdata->atime = hammer2_timespec_to_time(&vap->va_atime);
557 kflags |= NOTE_ATTRIB;
562 if (vap->va_mtime.tv_sec != VNOVAL) {
563 wipdata = hammer2_cluster_modify_ip(&trans, ip, cluster, 0);
564 wipdata->mtime = hammer2_timespec_to_time(&vap->va_mtime);
565 kflags |= NOTE_ATTRIB;
570 if (vap->va_mode != (mode_t)VNOVAL) {
571 mode_t cur_mode = ripdata->mode;
572 uid_t cur_uid = hammer2_to_unix_xid(&ripdata->uid);
573 gid_t cur_gid = hammer2_to_unix_xid(&ripdata->gid);
575 error = vop_helper_chmod(ap->a_vp, vap->va_mode, ap->a_cred,
576 cur_uid, cur_gid, &cur_mode);
577 if (error == 0 && ripdata->mode != cur_mode) {
578 wipdata = hammer2_cluster_modify_ip(&trans, ip,
580 wipdata->mode = cur_mode;
581 wipdata->ctime = ctime;
582 kflags |= NOTE_ATTRIB;
589 * If a truncation occurred we must call inode_fsync() now in order
590 * to trim the related data chains, otherwise a later expansion can
594 hammer2_cluster_modsync(cluster);
597 hammer2_inode_fsync(&trans, ip, cluster);
600 * Cleanup. If domtime is set an additional inode modification
601 * must be flagged. All other modifications will have already
602 * set INODE_MODIFIED and called vsetisdirty().
606 atomic_set_int(&ip->flags, HAMMER2_INODE_MODIFIED |
607 HAMMER2_INODE_MTIME);
611 hammer2_cluster_modsync(cluster);
612 hammer2_inode_unlock(ip, cluster);
613 hammer2_trans_done(&trans);
614 hammer2_knote(ip->vp, kflags);
622 hammer2_vop_readdir(struct vop_readdir_args *ap)
624 const hammer2_inode_data_t *ripdata;
626 hammer2_inode_t *xip;
627 hammer2_cluster_t *cparent;
628 hammer2_cluster_t *cluster;
629 hammer2_cluster_t *xcluster;
630 hammer2_blockref_t bref;
632 hammer2_key_t key_next;
646 saveoff = uio->uio_offset;
649 * Setup cookies directory entry cookies if requested
651 if (ap->a_ncookies) {
652 ncookies = uio->uio_resid / 16 + 1;
655 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
662 cparent = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS |
663 HAMMER2_RESOLVE_SHARED);
665 ripdata = &hammer2_cluster_rdata(cparent)->ipdata;
668 * Handle artificial entries. To ensure that only positive 64 bit
669 * quantities are returned to userland we always strip off bit 63.
670 * The hash code is designed such that codes 0x0000-0x7FFF are not
671 * used, allowing us to use these codes for articial entries.
673 * Entry 0 is used for '.' and entry 1 is used for '..'. Do not
674 * allow '..' to cross the mount point into (e.g.) the super-root.
677 cluster = (void *)(intptr_t)-1; /* non-NULL for early goto done case */
680 inum = ripdata->inum & HAMMER2_DIRHASH_USERMSK;
681 r = vop_write_dirent(&error, uio, inum, DT_DIR, 1, ".");
685 cookies[cookie_index] = saveoff;
688 if (cookie_index == ncookies)
694 * Be careful with lockorder when accessing ".."
696 * (ip is the current dir. xip is the parent dir).
698 inum = ripdata->inum & HAMMER2_DIRHASH_USERMSK;
699 while (ip->pip != NULL && ip != ip->pmp->iroot) {
701 hammer2_inode_ref(xip);
702 hammer2_inode_unlock(ip, cparent);
703 xcluster = hammer2_inode_lock(xip,
704 HAMMER2_RESOLVE_ALWAYS |
705 HAMMER2_RESOLVE_SHARED);
707 cparent = hammer2_inode_lock(ip,
708 HAMMER2_RESOLVE_ALWAYS |
709 HAMMER2_RESOLVE_SHARED);
710 hammer2_inode_drop(xip);
711 ripdata = &hammer2_cluster_rdata(cparent)->ipdata;
712 if (xip == ip->pip) {
713 inum = hammer2_cluster_rdata(xcluster)->
714 ipdata.inum & HAMMER2_DIRHASH_USERMSK;
715 hammer2_inode_unlock(xip, xcluster);
718 hammer2_inode_unlock(xip, xcluster);
720 r = vop_write_dirent(&error, uio, inum, DT_DIR, 2, "..");
724 cookies[cookie_index] = saveoff;
727 if (cookie_index == ncookies)
731 lkey = saveoff | HAMMER2_DIRHASH_VISIBLE;
732 if (hammer2_debug & 0x0020)
733 kprintf("readdir: lkey %016jx\n", lkey);
736 * parent is the inode cluster, already locked for us. Don't
737 * double lock shared locks as this will screw up upgrades.
742 cluster = hammer2_cluster_lookup(cparent, &key_next, lkey, lkey,
743 HAMMER2_LOOKUP_SHARED);
744 if (cluster == NULL) {
745 cluster = hammer2_cluster_lookup(cparent, &key_next,
746 lkey, (hammer2_key_t)-1,
747 HAMMER2_LOOKUP_SHARED);
750 hammer2_cluster_bref(cluster, &bref);
752 if (hammer2_debug & 0x0020)
753 kprintf("readdir: p=%p chain=%p %016jx (next %016jx)\n",
754 cparent->focus, cluster->focus,
757 if (bref.type == HAMMER2_BREF_TYPE_INODE) {
758 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
759 dtype = hammer2_get_dtype(ripdata);
760 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK;
761 r = vop_write_dirent(&error, uio,
763 HAMMER2_DIRHASH_USERMSK,
770 cookies[cookie_index] = saveoff;
773 /* XXX chain error */
774 kprintf("bad chain type readdir %d\n", bref.type);
778 * Keys may not be returned in order so once we have a
779 * placemarker (cluster) the scan must allow the full range
780 * or some entries will be missed.
782 cluster = hammer2_cluster_next(cparent, cluster, &key_next,
783 key_next, (hammer2_key_t)-1,
784 HAMMER2_LOOKUP_SHARED);
786 hammer2_cluster_bref(cluster, &bref);
787 saveoff = (bref.key & HAMMER2_DIRHASH_USERMSK) + 1;
789 saveoff = (hammer2_key_t)-1;
791 if (cookie_index == ncookies)
795 hammer2_cluster_unlock(cluster);
796 hammer2_cluster_drop(cluster);
799 hammer2_inode_unlock(ip, cparent);
801 *ap->a_eofflag = (cluster == NULL);
802 if (hammer2_debug & 0x0020)
803 kprintf("readdir: done at %016jx\n", saveoff);
804 uio->uio_offset = saveoff & ~HAMMER2_DIRHASH_VISIBLE;
805 if (error && cookie_index == 0) {
807 kfree(cookies, M_TEMP);
809 *ap->a_cookies = NULL;
813 *ap->a_ncookies = cookie_index;
814 *ap->a_cookies = cookies;
822 * hammer2_vop_readlink { vp, uio, cred }
826 hammer2_vop_readlink(struct vop_readlink_args *ap)
833 if (vp->v_type != VLNK)
837 error = hammer2_read_file(ip, ap->a_uio, 0);
843 hammer2_vop_read(struct vop_read_args *ap)
853 * Read operations supported on this vnode?
856 if (vp->v_type != VREG)
866 seqcount = ap->a_ioflag >> 16;
867 bigread = (uio->uio_resid > 100 * 1024 * 1024);
869 error = hammer2_read_file(ip, uio, seqcount);
875 hammer2_vop_write(struct vop_write_args *ap)
878 hammer2_trans_t trans;
887 * Read operations supported on this vnode?
890 if (vp->v_type != VREG)
899 if (ip->pmp->ronly) {
903 seqcount = ap->a_ioflag >> 16;
904 bigwrite = (uio->uio_resid > 100 * 1024 * 1024);
907 * Check resource limit
909 if (uio->uio_resid > 0 && (td = uio->uio_td) != NULL && td->td_proc &&
910 uio->uio_offset + uio->uio_resid >
911 td->td_proc->p_rlimit[RLIMIT_FSIZE].rlim_cur) {
912 lwpsignal(td->td_proc, td->td_lwp, SIGXFSZ);
916 bigwrite = (uio->uio_resid > 100 * 1024 * 1024);
919 * The transaction interlocks against flushes initiations
920 * (note: but will run concurrently with the actual flush).
922 hammer2_trans_init(&trans, ip->pmp, 0);
923 error = hammer2_write_file(ip, uio, ap->a_ioflag, seqcount);
924 hammer2_trans_done(&trans);
930 * Perform read operations on a file or symlink given an UNLOCKED
933 * The passed ip is not locked.
937 hammer2_read_file(hammer2_inode_t *ip, struct uio *uio, int seqcount)
948 * WARNING! Assumes that the kernel interlocks size changes at the
951 hammer2_mtx_sh(&ip->lock);
953 hammer2_mtx_unlock(&ip->lock);
955 while (uio->uio_resid > 0 && uio->uio_offset < size) {
962 lblksize = hammer2_calc_logical(ip, uio->uio_offset,
965 error = cluster_read(ip->vp, leof, lbase, lblksize,
966 uio->uio_resid, seqcount * BKVASIZE,
971 loff = (int)(uio->uio_offset - lbase);
973 if (n > uio->uio_resid)
975 if (n > size - uio->uio_offset)
976 n = (int)(size - uio->uio_offset);
977 bp->b_flags |= B_AGE;
978 uiomove((char *)bp->b_data + loff, n, uio);
985 * Write to the file represented by the inode via the logical buffer cache.
986 * The inode may represent a regular file or a symlink.
988 * The inode must not be locked.
992 hammer2_write_file(hammer2_inode_t *ip,
993 struct uio *uio, int ioflag, int seqcount)
995 hammer2_key_t old_eof;
996 hammer2_key_t new_eof;
1005 * WARNING! Assumes that the kernel interlocks size changes at the
1008 hammer2_mtx_ex(&ip->lock);
1009 if (ioflag & IO_APPEND)
1010 uio->uio_offset = ip->size;
1012 hammer2_mtx_unlock(&ip->lock);
1015 * Extend the file if necessary. If the write fails at some point
1016 * we will truncate it back down to cover as much as we were able
1019 * Doing this now makes it easier to calculate buffer sizes in
1026 if (uio->uio_offset + uio->uio_resid > old_eof) {
1027 new_eof = uio->uio_offset + uio->uio_resid;
1029 hammer2_extend_file(ip, new_eof);
1030 kflags |= NOTE_EXTEND;
1038 while (uio->uio_resid > 0) {
1039 hammer2_key_t lbase;
1047 * Don't allow the buffer build to blow out the buffer
1050 if ((ioflag & IO_RECURSE) == 0)
1051 bwillwrite(HAMMER2_PBUFSIZE);
1054 * This nominally tells us how much we can cluster and
1055 * what the logical buffer size needs to be. Currently
1056 * we don't try to cluster the write and just handle one
1059 lblksize = hammer2_calc_logical(ip, uio->uio_offset,
1061 loff = (int)(uio->uio_offset - lbase);
1063 KKASSERT(lblksize <= 65536);
1066 * Calculate bytes to copy this transfer and whether the
1067 * copy completely covers the buffer or not.
1070 n = lblksize - loff;
1071 if (n > uio->uio_resid) {
1073 if (loff == lbase && uio->uio_offset + n == new_eof)
1085 if (uio->uio_segflg == UIO_NOCOPY) {
1087 * Issuing a write with the same data backing the
1088 * buffer. Instantiate the buffer to collect the
1089 * backing vm pages, then read-in any missing bits.
1091 * This case is used by vop_stdputpages().
1093 bp = getblk(ip->vp, lbase, lblksize, GETBLK_BHEAVY, 0);
1094 if ((bp->b_flags & B_CACHE) == 0) {
1096 error = bread(ip->vp, lbase, lblksize, &bp);
1098 } else if (trivial) {
1100 * Even though we are entirely overwriting the buffer
1101 * we may still have to zero it out to avoid a
1102 * mmap/write visibility issue.
1104 bp = getblk(ip->vp, lbase, lblksize, GETBLK_BHEAVY, 0);
1105 if ((bp->b_flags & B_CACHE) == 0)
1109 * Partial overwrite, read in any missing bits then
1110 * replace the portion being written.
1112 * (The strategy code will detect zero-fill physical
1113 * blocks for this case).
1115 error = bread(ip->vp, lbase, lblksize, &bp);
1126 * Ok, copy the data in
1128 error = uiomove(bp->b_data + loff, n, uio);
1129 kflags |= NOTE_WRITE;
1137 * WARNING: Pageout daemon will issue UIO_NOCOPY writes
1138 * with IO_SYNC or IO_ASYNC set. These writes
1139 * must be handled as the pageout daemon expects.
1141 if (ioflag & IO_SYNC) {
1143 } else if ((ioflag & IO_DIRECT) && endofblk) {
1145 } else if (ioflag & IO_ASYNC) {
1153 * Cleanup. If we extended the file EOF but failed to write through
1154 * the entire write is a failure and we have to back-up.
1156 if (error && new_eof != old_eof) {
1157 hammer2_truncate_file(ip, old_eof);
1158 } else if (modified) {
1159 hammer2_mtx_ex(&ip->lock);
1160 hammer2_update_time(&ip->mtime);
1161 atomic_set_int(&ip->flags, HAMMER2_INODE_MTIME);
1162 hammer2_mtx_unlock(&ip->lock);
1164 atomic_set_int(&ip->flags, HAMMER2_INODE_MODIFIED);
1165 hammer2_knote(ip->vp, kflags);
1166 vsetisdirty(ip->vp);
1167 hammer2_trans_assert_strategy(ip->pmp);
1173 * Truncate the size of a file. The inode must not be locked.
1175 * NOTE: Caller handles setting HAMMER2_INODE_MODIFIED
1177 * WARNING: nvtruncbuf() can only be safely called without the inode lock
1178 * held due to the way our write thread works.
1180 * WARNING! Assumes that the kernel interlocks size changes at the
1185 hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize)
1187 hammer2_key_t lbase;
1192 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL);
1193 nvtruncbuf(ip->vp, nsize,
1194 nblksize, (int)nsize & (nblksize - 1),
1197 hammer2_mtx_ex(&ip->lock);
1199 atomic_set_int(&ip->flags, HAMMER2_INODE_RESIZED);
1200 hammer2_mtx_unlock(&ip->lock);
1205 * Extend the size of a file. The inode must not be locked.
1207 * WARNING! Assumes that the kernel interlocks size changes at the
1210 * NOTE: Caller handles setting HAMMER2_INODE_MODIFIED
1214 hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize)
1216 hammer2_key_t lbase;
1217 hammer2_key_t osize;
1222 hammer2_mtx_ex(&ip->lock);
1225 hammer2_mtx_unlock(&ip->lock);
1228 oblksize = hammer2_calc_logical(ip, osize, &lbase, NULL);
1229 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL);
1235 atomic_set_int(&ip->flags, HAMMER2_INODE_RESIZED);
1241 hammer2_vop_nresolve(struct vop_nresolve_args *ap)
1243 hammer2_inode_t *ip;
1244 hammer2_inode_t *dip;
1245 hammer2_cluster_t *cparent;
1246 hammer2_cluster_t *cluster;
1247 const hammer2_inode_data_t *ripdata;
1248 hammer2_key_t key_next;
1250 struct namecache *ncp;
1251 const uint8_t *name;
1257 dip = VTOI(ap->a_dvp);
1258 ncp = ap->a_nch->ncp;
1259 name = ncp->nc_name;
1260 name_len = ncp->nc_nlen;
1261 lhc = hammer2_dirhash(name, name_len);
1264 * Note: In DragonFly the kernel handles '.' and '..'.
1266 cparent = hammer2_inode_lock(dip, HAMMER2_RESOLVE_ALWAYS |
1267 HAMMER2_RESOLVE_SHARED);
1269 cluster = hammer2_cluster_lookup(cparent, &key_next,
1270 lhc, lhc + HAMMER2_DIRHASH_LOMASK,
1271 HAMMER2_LOOKUP_SHARED);
1273 if (hammer2_cluster_type(cluster) == HAMMER2_BREF_TYPE_INODE) {
1274 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
1275 if (ripdata->name_len == name_len &&
1276 bcmp(ripdata->filename, name, name_len) == 0) {
1280 cluster = hammer2_cluster_next(cparent, cluster, &key_next,
1282 lhc + HAMMER2_DIRHASH_LOMASK,
1283 HAMMER2_LOOKUP_SHARED);
1285 hammer2_inode_unlock(dip, cparent);
1288 * Resolve hardlink entries before acquiring the inode.
1291 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
1292 if (ripdata->type == HAMMER2_OBJTYPE_HARDLINK) {
1293 hammer2_tid_t inum = ripdata->inum;
1294 error = hammer2_hardlink_find(dip, NULL, &cluster);
1296 kprintf("hammer2: unable to find hardlink "
1297 "0x%016jx\n", inum);
1306 * nresolve needs to resolve hardlinks, the original cluster is not
1310 ip = hammer2_inode_get(dip->pmp, dip, cluster);
1311 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
1312 if (ripdata->type == HAMMER2_OBJTYPE_HARDLINK) {
1313 kprintf("nresolve: fixup hardlink\n");
1314 hammer2_inode_ref(ip);
1315 hammer2_inode_unlock(ip, NULL);
1316 hammer2_cluster_unlock(cluster);
1317 hammer2_cluster_drop(cluster);
1318 cluster = hammer2_inode_lock(ip,
1319 HAMMER2_RESOLVE_ALWAYS);
1320 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
1321 hammer2_inode_drop(ip);
1322 kprintf("nresolve: fixup to type %02x\n",
1331 * Deconsolidate any hardlink whos nlinks == 1. Ignore errors.
1332 * If an error occurs chain and ip are left alone.
1334 * XXX upgrade shared lock?
1336 if (ochain && chain &&
1337 chain->data->ipdata.nlinks == 1 && !dip->pmp->ronly) {
1338 kprintf("hammer2: need to unconsolidate hardlink for %s\n",
1339 chain->data->ipdata.filename);
1340 /* XXX retain shared lock on dip? (currently not held) */
1341 hammer2_trans_init(&trans, dip->pmp, 0);
1342 hammer2_hardlink_deconsolidate(&trans, dip, &chain, &ochain);
1343 hammer2_trans_done(&trans);
1348 * Acquire the related vnode
1350 * NOTE: For error processing, only ENOENT resolves the namecache
1351 * entry to NULL, otherwise we just return the error and
1352 * leave the namecache unresolved.
1354 * NOTE: multiple hammer2_inode structures can be aliased to the
1355 * same chain element, for example for hardlinks. This
1356 * use case does not 'reattach' inode associations that
1357 * might already exist, but always allocates a new one.
1359 * WARNING: inode structure is locked exclusively via inode_get
1360 * but chain was locked shared. inode_unlock()
1361 * will handle it properly.
1364 vp = hammer2_igetv(ip, cluster, &error);
1367 cache_setvp(ap->a_nch, vp);
1368 } else if (error == ENOENT) {
1369 cache_setvp(ap->a_nch, NULL);
1371 hammer2_inode_unlock(ip, cluster);
1374 * The vp should not be released until after we've disposed
1375 * of our locks, because it might cause vop_inactive() to
1382 cache_setvp(ap->a_nch, NULL);
1384 KASSERT(error || ap->a_nch->ncp->nc_vp != NULL,
1385 ("resolve error %d/%p ap %p\n",
1386 error, ap->a_nch->ncp->nc_vp, ap));
1393 hammer2_vop_nlookupdotdot(struct vop_nlookupdotdot_args *ap)
1395 hammer2_inode_t *dip;
1396 hammer2_inode_t *ip;
1397 hammer2_cluster_t *cparent;
1401 dip = VTOI(ap->a_dvp);
1403 if ((ip = dip->pip) == NULL) {
1408 cparent = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS);
1409 *ap->a_vpp = hammer2_igetv(ip, cparent, &error);
1410 hammer2_inode_unlock(ip, cparent);
1418 hammer2_vop_nmkdir(struct vop_nmkdir_args *ap)
1420 hammer2_inode_t *dip;
1421 hammer2_inode_t *nip;
1422 hammer2_trans_t trans;
1423 hammer2_cluster_t *cluster;
1424 struct namecache *ncp;
1425 const uint8_t *name;
1430 dip = VTOI(ap->a_dvp);
1431 if (dip->pmp->ronly) {
1436 ncp = ap->a_nch->ncp;
1437 name = ncp->nc_name;
1438 name_len = ncp->nc_nlen;
1441 hammer2_pfs_memory_wait(dip->pmp);
1442 hammer2_trans_init(&trans, dip->pmp, HAMMER2_TRANS_NEWINODE);
1443 nip = hammer2_inode_create(&trans, dip, ap->a_vap, ap->a_cred,
1445 &cluster, 0, &error);
1447 KKASSERT(nip == NULL);
1450 *ap->a_vpp = hammer2_igetv(nip, cluster, &error);
1451 hammer2_inode_unlock(nip, cluster);
1453 hammer2_trans_done(&trans);
1456 cache_setunresolved(ap->a_nch);
1457 cache_setvp(ap->a_nch, *ap->a_vpp);
1464 * Return the largest contiguous physical disk range for the logical
1465 * request, in bytes.
1467 * (struct vnode *vp, off_t loffset, off_t *doffsetp, int *runp, int *runb)
1469 * Basically disabled, the logical buffer write thread has to deal with
1470 * buffers one-at-a-time.
1474 hammer2_vop_bmap(struct vop_bmap_args *ap)
1476 *ap->a_doffsetp = NOOFFSET;
1481 return (EOPNOTSUPP);
1486 hammer2_vop_open(struct vop_open_args *ap)
1488 return vop_stdopen(ap);
1492 * hammer2_vop_advlock { vp, id, op, fl, flags }
1496 hammer2_vop_advlock(struct vop_advlock_args *ap)
1498 hammer2_inode_t *ip = VTOI(ap->a_vp);
1499 const hammer2_inode_data_t *ripdata;
1500 hammer2_cluster_t *cparent;
1503 cparent = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS |
1504 HAMMER2_RESOLVE_SHARED);
1505 ripdata = &hammer2_cluster_rdata(cparent)->ipdata;
1506 size = ripdata->size;
1507 hammer2_inode_unlock(ip, cparent);
1508 return (lf_advlock(ap, &ip->advlock, size));
1514 hammer2_vop_close(struct vop_close_args *ap)
1516 return vop_stdclose(ap);
1520 * hammer2_vop_nlink { nch, dvp, vp, cred }
1522 * Create a hardlink from (vp) to {dvp, nch}.
1526 hammer2_vop_nlink(struct vop_nlink_args *ap)
1528 hammer2_inode_t *fdip; /* target directory to create link in */
1529 hammer2_inode_t *tdip; /* target directory to create link in */
1530 hammer2_inode_t *cdip; /* common parent directory */
1531 hammer2_inode_t *ip; /* inode we are hardlinking to */
1532 hammer2_cluster_t *cluster;
1533 hammer2_cluster_t *fdcluster;
1534 hammer2_cluster_t *tdcluster;
1535 hammer2_cluster_t *cdcluster;
1536 hammer2_trans_t trans;
1537 struct namecache *ncp;
1538 const uint8_t *name;
1543 tdip = VTOI(ap->a_dvp);
1544 if (tdip->pmp->ronly) {
1549 ncp = ap->a_nch->ncp;
1550 name = ncp->nc_name;
1551 name_len = ncp->nc_nlen;
1554 * ip represents the file being hardlinked. The file could be a
1555 * normal file or a hardlink target if it has already been hardlinked.
1556 * If ip is a hardlinked target then ip->pip represents the location
1557 * of the hardlinked target, NOT the location of the hardlink pointer.
1559 * Bump nlinks and potentially also create or move the hardlink
1560 * target in the parent directory common to (ip) and (tdip). The
1561 * consolidation code can modify ip->cluster and ip->pip. The
1562 * returned cluster is locked.
1564 ip = VTOI(ap->a_vp);
1565 hammer2_pfs_memory_wait(ip->pmp);
1566 hammer2_trans_init(&trans, ip->pmp, HAMMER2_TRANS_NEWINODE);
1569 * The common parent directory must be locked first to avoid deadlocks.
1570 * Also note that fdip and/or tdip might match cdip.
1573 cdip = hammer2_inode_common_parent(fdip, tdip);
1574 cdcluster = hammer2_inode_lock(cdip, HAMMER2_RESOLVE_ALWAYS);
1575 fdcluster = hammer2_inode_lock(fdip, HAMMER2_RESOLVE_ALWAYS);
1576 tdcluster = hammer2_inode_lock(tdip, HAMMER2_RESOLVE_ALWAYS);
1577 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS);
1578 error = hammer2_hardlink_consolidate(&trans, ip, &cluster,
1579 cdip, cdcluster, 1);
1584 * Create a directory entry connected to the specified cluster.
1586 * WARNING! chain can get moved by the connect (indirectly due to
1587 * potential indirect block creation).
1589 error = hammer2_inode_connect(&trans, &cluster, 1,
1593 cache_setunresolved(ap->a_nch);
1594 cache_setvp(ap->a_nch, ap->a_vp);
1597 hammer2_inode_unlock(ip, cluster);
1598 hammer2_inode_unlock(tdip, tdcluster);
1599 hammer2_inode_unlock(fdip, fdcluster);
1600 hammer2_inode_unlock(cdip, cdcluster);
1601 hammer2_inode_drop(cdip);
1602 hammer2_trans_done(&trans);
1609 * hammer2_vop_ncreate { nch, dvp, vpp, cred, vap }
1611 * The operating system has already ensured that the directory entry
1612 * does not exist and done all appropriate namespace locking.
1616 hammer2_vop_ncreate(struct vop_ncreate_args *ap)
1618 hammer2_inode_t *dip;
1619 hammer2_inode_t *nip;
1620 hammer2_trans_t trans;
1621 hammer2_cluster_t *ncluster;
1622 struct namecache *ncp;
1623 const uint8_t *name;
1628 dip = VTOI(ap->a_dvp);
1629 if (dip->pmp->ronly) {
1634 ncp = ap->a_nch->ncp;
1635 name = ncp->nc_name;
1636 name_len = ncp->nc_nlen;
1637 hammer2_pfs_memory_wait(dip->pmp);
1638 hammer2_trans_init(&trans, dip->pmp, HAMMER2_TRANS_NEWINODE);
1641 nip = hammer2_inode_create(&trans, dip, ap->a_vap, ap->a_cred,
1643 &ncluster, 0, &error);
1645 KKASSERT(nip == NULL);
1648 *ap->a_vpp = hammer2_igetv(nip, ncluster, &error);
1649 hammer2_inode_unlock(nip, ncluster);
1651 hammer2_trans_done(&trans);
1654 cache_setunresolved(ap->a_nch);
1655 cache_setvp(ap->a_nch, *ap->a_vpp);
1662 * Make a device node (typically a fifo)
1666 hammer2_vop_nmknod(struct vop_nmknod_args *ap)
1668 hammer2_inode_t *dip;
1669 hammer2_inode_t *nip;
1670 hammer2_trans_t trans;
1671 hammer2_cluster_t *ncluster;
1672 struct namecache *ncp;
1673 const uint8_t *name;
1678 dip = VTOI(ap->a_dvp);
1679 if (dip->pmp->ronly) {
1684 ncp = ap->a_nch->ncp;
1685 name = ncp->nc_name;
1686 name_len = ncp->nc_nlen;
1687 hammer2_pfs_memory_wait(dip->pmp);
1688 hammer2_trans_init(&trans, dip->pmp, HAMMER2_TRANS_NEWINODE);
1691 nip = hammer2_inode_create(&trans, dip, ap->a_vap, ap->a_cred,
1693 &ncluster, 0, &error);
1695 KKASSERT(nip == NULL);
1698 *ap->a_vpp = hammer2_igetv(nip, ncluster, &error);
1699 hammer2_inode_unlock(nip, ncluster);
1701 hammer2_trans_done(&trans);
1704 cache_setunresolved(ap->a_nch);
1705 cache_setvp(ap->a_nch, *ap->a_vpp);
1712 * hammer2_vop_nsymlink { nch, dvp, vpp, cred, vap, target }
1716 hammer2_vop_nsymlink(struct vop_nsymlink_args *ap)
1718 hammer2_inode_t *dip;
1719 hammer2_inode_t *nip;
1720 hammer2_cluster_t *ncparent;
1721 hammer2_trans_t trans;
1722 struct namecache *ncp;
1723 const uint8_t *name;
1727 dip = VTOI(ap->a_dvp);
1728 if (dip->pmp->ronly)
1731 ncp = ap->a_nch->ncp;
1732 name = ncp->nc_name;
1733 name_len = ncp->nc_nlen;
1734 hammer2_pfs_memory_wait(dip->pmp);
1735 hammer2_trans_init(&trans, dip->pmp, HAMMER2_TRANS_NEWINODE);
1738 ap->a_vap->va_type = VLNK; /* enforce type */
1740 nip = hammer2_inode_create(&trans, dip, ap->a_vap, ap->a_cred,
1742 &ncparent, 0, &error);
1744 KKASSERT(nip == NULL);
1746 hammer2_trans_done(&trans);
1749 *ap->a_vpp = hammer2_igetv(nip, ncparent, &error);
1752 * Build the softlink (~like file data) and finalize the namecache.
1758 hammer2_inode_data_t *nipdata;
1760 nipdata = &hammer2_cluster_wdata(ncparent)->ipdata;
1761 /* nipdata = &nip->chain->data->ipdata;XXX */
1762 bytes = strlen(ap->a_target);
1764 if (bytes <= HAMMER2_EMBEDDED_BYTES) {
1765 KKASSERT(nipdata->op_flags &
1766 HAMMER2_OPFLAG_DIRECTDATA);
1767 bcopy(ap->a_target, nipdata->u.data, bytes);
1768 nipdata->size = bytes;
1770 hammer2_cluster_modsync(ncparent);
1771 hammer2_inode_unlock(nip, ncparent);
1772 /* nipdata = NULL; not needed */
1774 hammer2_inode_unlock(nip, ncparent);
1775 /* nipdata = NULL; not needed */
1776 bzero(&auio, sizeof(auio));
1777 bzero(&aiov, sizeof(aiov));
1778 auio.uio_iov = &aiov;
1779 auio.uio_segflg = UIO_SYSSPACE;
1780 auio.uio_rw = UIO_WRITE;
1781 auio.uio_resid = bytes;
1782 auio.uio_iovcnt = 1;
1783 auio.uio_td = curthread;
1784 aiov.iov_base = ap->a_target;
1785 aiov.iov_len = bytes;
1786 error = hammer2_write_file(nip, &auio, IO_APPEND, 0);
1787 /* XXX handle error */
1791 hammer2_inode_unlock(nip, ncparent);
1793 hammer2_trans_done(&trans);
1796 * Finalize namecache
1799 cache_setunresolved(ap->a_nch);
1800 cache_setvp(ap->a_nch, *ap->a_vpp);
1801 /* hammer2_knote(ap->a_dvp, NOTE_WRITE); */
1807 * hammer2_vop_nremove { nch, dvp, cred }
1811 hammer2_vop_nremove(struct vop_nremove_args *ap)
1813 hammer2_inode_t *dip;
1814 hammer2_trans_t trans;
1815 struct namecache *ncp;
1816 const uint8_t *name;
1821 dip = VTOI(ap->a_dvp);
1822 if (dip->pmp->ronly) {
1827 ncp = ap->a_nch->ncp;
1828 name = ncp->nc_name;
1829 name_len = ncp->nc_nlen;
1831 hammer2_pfs_memory_wait(dip->pmp);
1832 hammer2_trans_init(&trans, dip->pmp, 0);
1833 error = hammer2_unlink_file(&trans, dip, name, name_len,
1834 0, NULL, ap->a_nch, -1);
1835 hammer2_run_unlinkq(&trans, dip->pmp);
1836 hammer2_trans_done(&trans);
1838 cache_unlink(ap->a_nch);
1844 * hammer2_vop_nrmdir { nch, dvp, cred }
1848 hammer2_vop_nrmdir(struct vop_nrmdir_args *ap)
1850 hammer2_inode_t *dip;
1851 hammer2_trans_t trans;
1852 struct namecache *ncp;
1853 const uint8_t *name;
1858 dip = VTOI(ap->a_dvp);
1859 if (dip->pmp->ronly) {
1864 ncp = ap->a_nch->ncp;
1865 name = ncp->nc_name;
1866 name_len = ncp->nc_nlen;
1868 hammer2_pfs_memory_wait(dip->pmp);
1869 hammer2_trans_init(&trans, dip->pmp, 0);
1870 hammer2_run_unlinkq(&trans, dip->pmp);
1871 error = hammer2_unlink_file(&trans, dip, name, name_len,
1872 1, NULL, ap->a_nch, -1);
1873 hammer2_trans_done(&trans);
1875 cache_unlink(ap->a_nch);
1881 * hammer2_vop_nrename { fnch, tnch, fdvp, tdvp, cred }
1885 hammer2_vop_nrename(struct vop_nrename_args *ap)
1887 struct namecache *fncp;
1888 struct namecache *tncp;
1889 hammer2_inode_t *cdip;
1890 hammer2_inode_t *fdip;
1891 hammer2_inode_t *tdip;
1892 hammer2_inode_t *ip;
1893 hammer2_cluster_t *cluster;
1894 hammer2_cluster_t *fdcluster;
1895 hammer2_cluster_t *tdcluster;
1896 hammer2_cluster_t *cdcluster;
1897 hammer2_trans_t trans;
1898 const uint8_t *fname;
1900 const uint8_t *tname;
1906 if (ap->a_fdvp->v_mount != ap->a_tdvp->v_mount)
1908 if (ap->a_fdvp->v_mount != ap->a_fnch->ncp->nc_vp->v_mount)
1911 fdip = VTOI(ap->a_fdvp); /* source directory */
1912 tdip = VTOI(ap->a_tdvp); /* target directory */
1914 if (fdip->pmp->ronly)
1918 fncp = ap->a_fnch->ncp; /* entry name in source */
1919 fname = fncp->nc_name;
1920 fname_len = fncp->nc_nlen;
1922 tncp = ap->a_tnch->ncp; /* entry name in target */
1923 tname = tncp->nc_name;
1924 tname_len = tncp->nc_nlen;
1926 hammer2_pfs_memory_wait(tdip->pmp);
1927 hammer2_trans_init(&trans, tdip->pmp, 0);
1930 * ip is the inode being renamed. If this is a hardlink then
1931 * ip represents the actual file and not the hardlink marker.
1933 ip = VTOI(fncp->nc_vp);
1938 * The common parent directory must be locked first to avoid deadlocks.
1939 * Also note that fdip and/or tdip might match cdip.
1941 * WARNING! fdip may not match ip->pip. That is, if the source file
1942 * is already a hardlink then what we are renaming is the
1943 * hardlink pointer, not the hardlink itself. The hardlink
1944 * directory (ip->pip) will already be at a common parent
1947 * Be sure to use ip->pip when finding the common parent
1948 * against tdip or we might accidently move the hardlink
1949 * target into a subdirectory that makes it inaccessible to
1952 cdip = hammer2_inode_common_parent(ip->pip, tdip);
1953 cdcluster = hammer2_inode_lock(cdip, HAMMER2_RESOLVE_ALWAYS);
1954 fdcluster = hammer2_inode_lock(fdip, HAMMER2_RESOLVE_ALWAYS);
1955 tdcluster = hammer2_inode_lock(tdip, HAMMER2_RESOLVE_ALWAYS);
1958 * Keep a tight grip on the inode so the temporary unlinking from
1959 * the source location prior to linking to the target location
1960 * does not cause the cluster to be destroyed.
1962 * NOTE: To avoid deadlocks we cannot lock (ip) while we are
1963 * unlinking elements from their directories. Locking
1964 * the nlinks field does not lock the whole inode.
1966 hammer2_inode_ref(ip);
1969 * Remove target if it exists.
1971 error = hammer2_unlink_file(&trans, tdip, tname, tname_len,
1972 -1, NULL, ap->a_tnch, -1);
1974 if (error && error != ENOENT)
1978 * When renaming a hardlinked file we may have to re-consolidate
1979 * the location of the hardlink target.
1981 * If ip represents a regular file the consolidation code essentially
1982 * does nothing other than return the same locked cluster that was
1985 * The returned cluster will be locked.
1987 * WARNING! We do not currently have a local copy of ipdata but
1988 * we do use one later remember that it must be reloaded
1989 * on any modification to the inode, including connects.
1991 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS);
1992 error = hammer2_hardlink_consolidate(&trans, ip, &cluster,
1993 cdip, cdcluster, 0);
1998 * Disconnect (fdip, fname) from the source directory. This will
1999 * disconnect (ip) if it represents a direct file. If (ip) represents
2000 * a hardlink the HARDLINK pointer object will be removed but the
2001 * hardlink will stay intact.
2003 * Always pass nch as NULL because we intend to reconnect the inode,
2004 * so we don't want hammer2_unlink_file() to rename it to the hidden
2005 * open-but-unlinked directory.
2007 * The target cluster may be marked DELETED but will not be destroyed
2008 * since we retain our hold on ip and cluster.
2010 * NOTE: We pass nlinks as 0 (not -1) in order to retain the file's
2013 error = hammer2_unlink_file(&trans, fdip, fname, fname_len,
2014 -1, &hlink, NULL, 0);
2015 KKASSERT(error != EAGAIN);
2020 * Reconnect ip to target directory using cluster. Chains cannot
2021 * actually be moved, so this will duplicate the cluster in the new
2022 * spot and assign it to the ip, replacing the old cluster.
2024 * WARNING: Because recursive locks are allowed and we unlinked the
2025 * file that we have a cluster-in-hand for just above, the
2026 * cluster might have been delete-duplicated. We must
2027 * refactor the cluster.
2029 * WARNING: Chain locks can lock buffer cache buffers, to avoid
2030 * deadlocks we want to unlock before issuing a cache_*()
2031 * op (that might have to lock a vnode).
2033 * NOTE: Pass nlinks as 0 because we retained the link count from
2034 * the unlink, so we do not have to modify it.
2036 error = hammer2_inode_connect(&trans, &cluster, hlink,
2038 tname, tname_len, 0);
2040 KKASSERT(cluster != NULL);
2041 hammer2_inode_repoint(ip, (hlink ? ip->pip : tdip), cluster);
2044 hammer2_inode_unlock(ip, cluster);
2045 hammer2_inode_unlock(tdip, tdcluster);
2046 hammer2_inode_unlock(fdip, fdcluster);
2047 hammer2_inode_unlock(cdip, cdcluster);
2048 hammer2_inode_drop(ip);
2049 hammer2_inode_drop(cdip);
2050 hammer2_run_unlinkq(&trans, fdip->pmp);
2051 hammer2_trans_done(&trans);
2054 * Issue the namecache update after unlocking all the internal
2055 * hammer structures, otherwise we might deadlock.
2057 if (tnch_error == 0) {
2058 cache_unlink(ap->a_tnch);
2059 cache_setunresolved(ap->a_tnch);
2062 cache_rename(ap->a_fnch, ap->a_tnch);
2069 * Strategy code (async logical file buffer I/O from system)
2071 * WARNING: The strategy code cannot safely use hammer2 transactions
2072 * as this can deadlock against vfs_sync's vfsync() call
2073 * if multiple flushes are queued. All H2 structures must
2074 * already be present and ready for the DIO.
2076 * Reads can be initiated asynchronously, writes have to be
2077 * spooled to a separate thread for action to avoid deadlocks.
2079 static int hammer2_strategy_read(struct vop_strategy_args *ap);
2080 static int hammer2_strategy_write(struct vop_strategy_args *ap);
2081 static void hammer2_strategy_read_callback(hammer2_iocb_t *iocb);
2085 hammer2_vop_strategy(struct vop_strategy_args *ap)
2096 error = hammer2_strategy_read(ap);
2097 ++hammer2_iod_file_read;
2100 error = hammer2_strategy_write(ap);
2101 ++hammer2_iod_file_write;
2104 bp->b_error = error = EINVAL;
2105 bp->b_flags |= B_ERROR;
2113 * Logical buffer I/O, async read.
2117 hammer2_strategy_read(struct vop_strategy_args *ap)
2122 hammer2_inode_t *ip;
2123 hammer2_cluster_t *cparent;
2124 hammer2_cluster_t *cluster;
2125 hammer2_key_t key_dummy;
2126 hammer2_key_t lbase;
2131 ip = VTOI(ap->a_vp);
2132 nbio = push_bio(bio);
2134 lbase = bio->bio_offset;
2135 KKASSERT(((int)lbase & HAMMER2_PBUFMASK) == 0);
2138 * Lookup the file offset.
2140 cparent = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS |
2141 HAMMER2_RESOLVE_SHARED);
2142 cluster = hammer2_cluster_lookup(cparent, &key_dummy,
2144 HAMMER2_LOOKUP_NODATA |
2145 HAMMER2_LOOKUP_SHARED);
2146 hammer2_inode_unlock(ip, cparent);
2149 * Data is zero-fill if no cluster could be found
2150 * (XXX or EIO on a cluster failure).
2152 if (cluster == NULL) {
2155 bzero(bp->b_data, bp->b_bcount);
2161 * Cluster elements must be type INODE or type DATA, but the
2162 * compression mode (or not) for DATA chains can be different for
2163 * each chain. This will be handled by the callback.
2165 * If the cluster already has valid data the callback will be made
2166 * immediately/synchronously.
2168 btype = hammer2_cluster_type(cluster);
2169 if (btype != HAMMER2_BREF_TYPE_INODE &&
2170 btype != HAMMER2_BREF_TYPE_DATA) {
2171 panic("READ PATH: hammer2_strategy_read: unknown bref type");
2173 hammer2_cluster_load_async(cluster, hammer2_strategy_read_callback,
2179 * Read callback for hammer2_cluster_load_async(). The load function may
2180 * start several actual I/Os but will only make one callback, typically with
2181 * the first valid I/O XXX
2185 hammer2_strategy_read_callback(hammer2_iocb_t *iocb)
2187 struct bio *bio = iocb->ptr; /* original logical buffer */
2188 struct buf *bp = bio->bio_buf; /* original logical buffer */
2189 hammer2_chain_t *chain;
2190 hammer2_cluster_t *cluster;
2196 * Extract data and handle iteration on I/O failure. iocb->off
2197 * is the cluster index for iteration.
2199 cluster = iocb->cluster;
2200 dio = iocb->dio; /* can be NULL if iocb not in progress */
2203 * Work to do if INPROG set, else dio is already good or dio is
2204 * NULL (which is the shortcut case if chain->data is already good).
2206 if (iocb->flags & HAMMER2_IOCB_INPROG) {
2208 * Read attempt not yet made. Issue an asynchronous read
2209 * if necessary and return, operation will chain back to
2212 if ((iocb->flags & HAMMER2_IOCB_READ) == 0) {
2213 if (dio->bp == NULL ||
2214 (dio->bp->b_flags & B_CACHE) == 0) {
2219 iocb->flags |= HAMMER2_IOCB_READ;
2220 breadcb(dio->hmp->devvp,
2221 dio->pbase, dio->psize,
2222 hammer2_io_callback, iocb);
2229 * If we have a DIO it is now done, check for an error and
2230 * calculate the data.
2232 * If there is no DIO it is an optimization by
2233 * hammer2_cluster_load_async(), the data is available in
2237 if (dio->bp->b_flags & B_ERROR) {
2238 i = (int)iocb->lbase + 1;
2239 if (i >= cluster->nchains) {
2240 bp->b_flags |= B_ERROR;
2241 bp->b_error = dio->bp->b_error;
2242 hammer2_io_complete(iocb);
2244 hammer2_cluster_unlock(cluster);
2245 hammer2_cluster_drop(cluster);
2247 hammer2_io_complete(iocb); /* XXX */
2248 chain = cluster->array[i].chain;
2249 kprintf("hammer2: IO CHAIN-%d %p\n", i, chain);
2250 hammer2_adjreadcounter(&chain->bref,
2252 iocb->chain = chain;
2253 iocb->lbase = (off_t)i;
2256 hammer2_io_getblk(chain->hmp,
2257 chain->bref.data_off,
2263 chain = iocb->chain;
2264 data = hammer2_io_data(dio, chain->bref.data_off);
2267 * Special synchronous case, data present in chain->data.
2269 chain = iocb->chain;
2270 data = (void *)chain->data;
2273 if (chain->bref.type == HAMMER2_BREF_TYPE_INODE) {
2275 * Data is embedded in the inode (copy from inode).
2277 bcopy(((hammer2_inode_data_t *)data)->u.data,
2278 bp->b_data, HAMMER2_EMBEDDED_BYTES);
2279 bzero(bp->b_data + HAMMER2_EMBEDDED_BYTES,
2280 bp->b_bcount - HAMMER2_EMBEDDED_BYTES);
2283 } else if (chain->bref.type == HAMMER2_BREF_TYPE_DATA) {
2285 * Data is on-media, issue device I/O and copy.
2287 * XXX direct-IO shortcut could go here XXX.
2289 switch (HAMMER2_DEC_COMP(chain->bref.methods)) {
2290 case HAMMER2_COMP_LZ4:
2291 hammer2_decompress_LZ4_callback(data, chain->bytes,
2294 case HAMMER2_COMP_ZLIB:
2295 hammer2_decompress_ZLIB_callback(data, chain->bytes,
2298 case HAMMER2_COMP_NONE:
2299 KKASSERT(chain->bytes <= bp->b_bcount);
2300 bcopy(data, bp->b_data, chain->bytes);
2301 if (chain->bytes < bp->b_bcount) {
2302 bzero(bp->b_data + chain->bytes,
2303 bp->b_bcount - chain->bytes);
2305 bp->b_flags |= B_NOTMETA;
2310 panic("hammer2_strategy_read: "
2311 "unknown compression type");
2314 /* bqrelse the dio to help stabilize the call to panic() */
2316 hammer2_io_bqrelse(&dio);
2317 panic("hammer2_strategy_read: unknown bref type");
2321 * Once the iocb is cleaned up the DIO (if any) will no longer be
2322 * in-progress but will still have a ref. Be sure to release
2325 hammer2_io_complete(iocb); /* physical management */
2326 if (dio) /* physical dio & buffer */
2327 hammer2_io_bqrelse(&dio);
2328 hammer2_cluster_unlock(cluster); /* cluster management */
2329 hammer2_cluster_drop(cluster); /* cluster management */
2330 biodone(bio); /* logical buffer */
2335 hammer2_strategy_write(struct vop_strategy_args *ap)
2340 hammer2_inode_t *ip;
2344 ip = VTOI(ap->a_vp);
2347 hammer2_lwinprog_ref(pmp);
2348 hammer2_trans_assert_strategy(pmp);
2349 hammer2_mtx_ex(&pmp->wthread_mtx);
2350 if (TAILQ_EMPTY(&pmp->wthread_bioq.queue)) {
2351 bioq_insert_tail(&pmp->wthread_bioq, ap->a_bio);
2352 hammer2_mtx_unlock(&pmp->wthread_mtx);
2353 wakeup(&pmp->wthread_bioq);
2355 bioq_insert_tail(&pmp->wthread_bioq, ap->a_bio);
2356 hammer2_mtx_unlock(&pmp->wthread_mtx);
2358 hammer2_lwinprog_wait(pmp);
2364 * hammer2_vop_ioctl { vp, command, data, fflag, cred }
2368 hammer2_vop_ioctl(struct vop_ioctl_args *ap)
2370 hammer2_inode_t *ip;
2374 ip = VTOI(ap->a_vp);
2376 error = hammer2_ioctl(ip, ap->a_command, (void *)ap->a_data,
2377 ap->a_fflag, ap->a_cred);
2384 hammer2_vop_mountctl(struct vop_mountctl_args *ap)
2392 case (MOUNTCTL_SET_EXPORT):
2393 mp = ap->a_head.a_ops->head.vv_mount;
2396 if (ap->a_ctllen != sizeof(struct export_args))
2399 rc = vfs_export(mp, &pmp->export,
2400 (const struct export_args *)ap->a_ctl);
2403 rc = vop_stdmountctl(ap);
2411 * This handles unlinked open files after the vnode is finally dereferenced.
2412 * To avoid deadlocks it cannot be called from the normal vnode recycling
2413 * path, so we call it (1) after a unlink, rmdir, or rename, (2) on every
2414 * flush, and (3) on umount.
2417 hammer2_run_unlinkq(hammer2_trans_t *trans, hammer2_pfs_t *pmp)
2419 const hammer2_inode_data_t *ripdata;
2420 hammer2_inode_unlink_t *ipul;
2421 hammer2_inode_t *ip;
2422 hammer2_cluster_t *cluster;
2423 hammer2_cluster_t *cparent;
2425 if (TAILQ_EMPTY(&pmp->unlinkq))
2429 hammer2_spin_ex(&pmp->list_spin);
2430 while ((ipul = TAILQ_FIRST(&pmp->unlinkq)) != NULL) {
2431 TAILQ_REMOVE(&pmp->unlinkq, ipul, entry);
2432 hammer2_spin_unex(&pmp->list_spin);
2434 kfree(ipul, pmp->minode);
2436 cluster = hammer2_inode_lock(ip, HAMMER2_RESOLVE_ALWAYS);
2437 ripdata = &hammer2_cluster_rdata(cluster)->ipdata;
2438 if (hammer2_debug & 0x400) {
2439 kprintf("hammer2: unlink on reclaim: %s refs=%d\n",
2440 ripdata->filename, ip->refs);
2444 * NOTE: Due to optimizations to avoid I/O on the inode for
2445 * the last unlink, ripdata->nlinks is not necessarily
2448 /* KKASSERT(ripdata->nlinks == 0); (see NOTE) */
2449 cparent = hammer2_cluster_parent(cluster);
2450 hammer2_cluster_delete(trans, cparent, cluster,
2451 HAMMER2_DELETE_PERMANENT);
2452 hammer2_cluster_unlock(cparent);
2453 hammer2_cluster_drop(cparent);
2454 hammer2_inode_unlock(ip, cluster); /* inode lock */
2455 hammer2_inode_drop(ip); /* ipul ref */
2457 hammer2_spin_ex(&pmp->list_spin);
2459 hammer2_spin_unex(&pmp->list_spin);
2467 static void filt_hammer2detach(struct knote *kn);
2468 static int filt_hammer2read(struct knote *kn, long hint);
2469 static int filt_hammer2write(struct knote *kn, long hint);
2470 static int filt_hammer2vnode(struct knote *kn, long hint);
2472 static struct filterops hammer2read_filtops =
2473 { FILTEROP_ISFD | FILTEROP_MPSAFE,
2474 NULL, filt_hammer2detach, filt_hammer2read };
2475 static struct filterops hammer2write_filtops =
2476 { FILTEROP_ISFD | FILTEROP_MPSAFE,
2477 NULL, filt_hammer2detach, filt_hammer2write };
2478 static struct filterops hammer2vnode_filtops =
2479 { FILTEROP_ISFD | FILTEROP_MPSAFE,
2480 NULL, filt_hammer2detach, filt_hammer2vnode };
2484 hammer2_vop_kqfilter(struct vop_kqfilter_args *ap)
2486 struct vnode *vp = ap->a_vp;
2487 struct knote *kn = ap->a_kn;
2489 switch (kn->kn_filter) {
2491 kn->kn_fop = &hammer2read_filtops;
2494 kn->kn_fop = &hammer2write_filtops;
2497 kn->kn_fop = &hammer2vnode_filtops;
2500 return (EOPNOTSUPP);
2503 kn->kn_hook = (caddr_t)vp;
2505 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
2511 filt_hammer2detach(struct knote *kn)
2513 struct vnode *vp = (void *)kn->kn_hook;
2515 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
2519 filt_hammer2read(struct knote *kn, long hint)
2521 struct vnode *vp = (void *)kn->kn_hook;
2522 hammer2_inode_t *ip = VTOI(vp);
2525 if (hint == NOTE_REVOKE) {
2526 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2529 off = ip->size - kn->kn_fp->f_offset;
2530 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX;
2531 if (kn->kn_sfflags & NOTE_OLDAPI)
2533 return (kn->kn_data != 0);
2538 filt_hammer2write(struct knote *kn, long hint)
2540 if (hint == NOTE_REVOKE)
2541 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2547 filt_hammer2vnode(struct knote *kn, long hint)
2549 if (kn->kn_sfflags & hint)
2550 kn->kn_fflags |= hint;
2551 if (hint == NOTE_REVOKE) {
2552 kn->kn_flags |= (EV_EOF | EV_NODATA);
2555 return (kn->kn_fflags != 0);
2563 hammer2_vop_markatime(struct vop_markatime_args *ap)
2565 hammer2_inode_t *ip;
2578 hammer2_vop_fifokqfilter(struct vop_kqfilter_args *ap)
2582 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
2584 error = hammer2_vop_kqfilter(ap);
2591 struct vop_ops hammer2_vnode_vops = {
2592 .vop_default = vop_defaultop,
2593 .vop_fsync = hammer2_vop_fsync,
2594 .vop_getpages = vop_stdgetpages,
2595 .vop_putpages = vop_stdputpages,
2596 .vop_access = hammer2_vop_access,
2597 .vop_advlock = hammer2_vop_advlock,
2598 .vop_close = hammer2_vop_close,
2599 .vop_nlink = hammer2_vop_nlink,
2600 .vop_ncreate = hammer2_vop_ncreate,
2601 .vop_nsymlink = hammer2_vop_nsymlink,
2602 .vop_nremove = hammer2_vop_nremove,
2603 .vop_nrmdir = hammer2_vop_nrmdir,
2604 .vop_nrename = hammer2_vop_nrename,
2605 .vop_getattr = hammer2_vop_getattr,
2606 .vop_setattr = hammer2_vop_setattr,
2607 .vop_readdir = hammer2_vop_readdir,
2608 .vop_readlink = hammer2_vop_readlink,
2609 .vop_getpages = vop_stdgetpages,
2610 .vop_putpages = vop_stdputpages,
2611 .vop_read = hammer2_vop_read,
2612 .vop_write = hammer2_vop_write,
2613 .vop_open = hammer2_vop_open,
2614 .vop_inactive = hammer2_vop_inactive,
2615 .vop_reclaim = hammer2_vop_reclaim,
2616 .vop_nresolve = hammer2_vop_nresolve,
2617 .vop_nlookupdotdot = hammer2_vop_nlookupdotdot,
2618 .vop_nmkdir = hammer2_vop_nmkdir,
2619 .vop_nmknod = hammer2_vop_nmknod,
2620 .vop_ioctl = hammer2_vop_ioctl,
2621 .vop_mountctl = hammer2_vop_mountctl,
2622 .vop_bmap = hammer2_vop_bmap,
2623 .vop_strategy = hammer2_vop_strategy,
2624 .vop_kqfilter = hammer2_vop_kqfilter
2627 struct vop_ops hammer2_spec_vops = {
2628 .vop_default = vop_defaultop,
2629 .vop_fsync = hammer2_vop_fsync,
2630 .vop_read = vop_stdnoread,
2631 .vop_write = vop_stdnowrite,
2632 .vop_access = hammer2_vop_access,
2633 .vop_close = hammer2_vop_close,
2634 .vop_markatime = hammer2_vop_markatime,
2635 .vop_getattr = hammer2_vop_getattr,
2636 .vop_inactive = hammer2_vop_inactive,
2637 .vop_reclaim = hammer2_vop_reclaim,
2638 .vop_setattr = hammer2_vop_setattr
2641 struct vop_ops hammer2_fifo_vops = {
2642 .vop_default = fifo_vnoperate,
2643 .vop_fsync = hammer2_vop_fsync,
2645 .vop_read = hammer2_vop_fiforead,
2646 .vop_write = hammer2_vop_fifowrite,
2648 .vop_access = hammer2_vop_access,
2650 .vop_close = hammer2_vop_fifoclose,
2652 .vop_markatime = hammer2_vop_markatime,
2653 .vop_getattr = hammer2_vop_getattr,
2654 .vop_inactive = hammer2_vop_inactive,
2655 .vop_reclaim = hammer2_vop_reclaim,
2656 .vop_setattr = hammer2_vop_setattr,
2657 .vop_kqfilter = hammer2_vop_fifokqfilter