2 * Copyright (c) 2011-2015 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>
62 static int hammer2_read_file(hammer2_inode_t *ip, struct uio *uio,
64 static int hammer2_write_file(hammer2_inode_t *ip, struct uio *uio,
65 int ioflag, int seqcount);
66 static void hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize);
67 static void hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize);
69 struct objcache *cache_xops;
73 hammer2_knote(struct vnode *vp, int flags)
76 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, flags);
80 * Last reference to a vnode is going away but it is still cached.
84 hammer2_vop_inactive(struct vop_inactive_args *ap)
103 * Check for deleted inodes and recycle immediately on the last
104 * release. Be sure to destroy any left-over buffer cache buffers
105 * so we do not waste time trying to flush them.
107 * WARNING: nvtruncbuf() can only be safely called without the inode
108 * lock held due to the way our write thread works.
110 if (ip->flags & HAMMER2_INODE_ISUNLINKED) {
115 * Detect updates to the embedded data which may be
116 * synchronized by the strategy code. Simply mark the
117 * inode modified so it gets picked up by our normal flush.
119 nblksize = hammer2_calc_logical(ip, 0, &lbase, NULL);
120 nvtruncbuf(vp, 0, nblksize, 0, 0);
128 * Reclaim a vnode so that it can be reused; after the inode is
129 * disassociated, the filesystem must manage it alone.
133 hammer2_vop_reclaim(struct vop_reclaim_args *ap)
149 * The final close of a deleted file or directory marks it for
150 * destruction. The DELETED flag allows the flusher to shortcut
151 * any modified blocks still unflushed (that is, just ignore them).
153 * HAMMER2 usually does not try to optimize the freemap by returning
154 * deleted blocks to it as it does not usually know how many snapshots
155 * might be referencing portions of the file/dir.
161 * NOTE! We do not attempt to flush chains here, flushing is
162 * really fragile and could also deadlock.
167 * Once reclaimed the inode is disconnected from the normal flush
168 * mechanism and must be tracked
170 * A reclaim can occur at any time so we cannot safely start a
171 * transaction to handle reclamation of unlinked files. Instead,
172 * the ip is left with a reference and placed on a linked list and
175 if (ip->flags & HAMMER2_INODE_ISUNLINKED) {
176 hammer2_inode_unlink_t *ipul;
178 ipul = kmalloc(sizeof(*ipul), pmp->minode, M_WAITOK | M_ZERO);
181 hammer2_spin_ex(&pmp->list_spin);
182 TAILQ_INSERT_TAIL(&pmp->unlinkq, ipul, entry);
183 hammer2_spin_unex(&pmp->list_spin);
184 /* retain ref from vp for ipul */
186 hammer2_inode_drop(ip); /* vp ref */
190 * XXX handle background sync when ip dirty, kernel will no longer
191 * notify us regarding this inode because there is no longer a
192 * vnode attached to it.
201 hammer2_vop_fsync(struct vop_fsync_args *ap)
211 /* XXX can't do this yet */
212 hammer2_trans_init(ip->pmp, HAMMER2_TRANS_ISFLUSH);
213 vfsync(vp, ap->a_waitfor, 1, NULL, NULL);
215 hammer2_trans_init(ip->pmp, 0);
216 vfsync(vp, ap->a_waitfor, 1, NULL, NULL);
219 * Calling chain_flush here creates a lot of duplicative
220 * COW operations due to non-optimal vnode ordering.
222 * Only do it for an actual fsync() syscall. The other forms
223 * which call this function will eventually call chain_flush
224 * on the volume root as a catch-all, which is far more optimal.
226 hammer2_inode_lock(ip, 0);
227 if (ip->flags & HAMMER2_INODE_MODIFIED)
228 hammer2_inode_fsync(ip);
229 hammer2_inode_unlock(ip);
230 hammer2_trans_done(ip->pmp);
238 hammer2_vop_access(struct vop_access_args *ap)
240 hammer2_inode_t *ip = VTOI(ap->a_vp);
246 hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED);
247 uid = hammer2_to_unix_xid(&ip->meta.uid);
248 gid = hammer2_to_unix_xid(&ip->meta.gid);
249 error = vop_helper_access(ap, uid, gid, ip->meta.mode, ip->meta.uflags);
250 hammer2_inode_unlock(ip);
258 hammer2_vop_getattr(struct vop_getattr_args *ap)
264 hammer2_chain_t *chain;
274 hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED);
276 vap->va_fsid = pmp->mp->mnt_stat.f_fsid.val[0];
277 vap->va_fileid = ip->meta.inum;
278 vap->va_mode = ip->meta.mode;
279 vap->va_nlink = ip->meta.nlinks;
280 vap->va_uid = hammer2_to_unix_xid(&ip->meta.uid);
281 vap->va_gid = hammer2_to_unix_xid(&ip->meta.gid);
284 vap->va_size = ip->meta.size; /* protected by shared lock */
285 vap->va_blocksize = HAMMER2_PBUFSIZE;
286 vap->va_flags = ip->meta.uflags;
287 hammer2_time_to_timespec(ip->meta.ctime, &vap->va_ctime);
288 hammer2_time_to_timespec(ip->meta.mtime, &vap->va_mtime);
289 hammer2_time_to_timespec(ip->meta.mtime, &vap->va_atime);
292 for (i = 0; i < ip->cluster.nchains; ++i) {
293 if ((chain = ip->cluster.array[i].chain) != NULL) {
294 if (vap->va_bytes < chain->bref.data_count)
295 vap->va_bytes = chain->bref.data_count;
298 vap->va_type = hammer2_get_vtype(ip->meta.type);
300 vap->va_uid_uuid = ip->meta.uid;
301 vap->va_gid_uuid = ip->meta.gid;
302 vap->va_vaflags = VA_UID_UUID_VALID | VA_GID_UUID_VALID |
305 hammer2_inode_unlock(ip);
313 hammer2_vop_setattr(struct vop_setattr_args *ap)
325 hammer2_update_time(&ctime);
329 if (ip->pmp->ronly) {
334 hammer2_pfs_memory_wait(ip->pmp);
335 hammer2_trans_init(ip->pmp, 0);
336 hammer2_inode_lock(ip, 0);
339 if (vap->va_flags != VNOVAL) {
342 flags = ip->meta.uflags;
343 error = vop_helper_setattr_flags(&flags, vap->va_flags,
344 hammer2_to_unix_xid(&ip->meta.uid),
347 if (ip->meta.uflags != flags) {
348 hammer2_inode_modify(ip);
349 ip->meta.uflags = flags;
350 ip->meta.ctime = ctime;
351 kflags |= NOTE_ATTRIB;
353 if (ip->meta.uflags & (IMMUTABLE | APPEND)) {
360 if (ip->meta.uflags & (IMMUTABLE | APPEND)) {
364 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
365 mode_t cur_mode = ip->meta.mode;
366 uid_t cur_uid = hammer2_to_unix_xid(&ip->meta.uid);
367 gid_t cur_gid = hammer2_to_unix_xid(&ip->meta.gid);
371 error = vop_helper_chown(ap->a_vp, vap->va_uid, vap->va_gid,
373 &cur_uid, &cur_gid, &cur_mode);
375 hammer2_guid_to_uuid(&uuid_uid, cur_uid);
376 hammer2_guid_to_uuid(&uuid_gid, cur_gid);
377 if (bcmp(&uuid_uid, &ip->meta.uid, sizeof(uuid_uid)) ||
378 bcmp(&uuid_gid, &ip->meta.gid, sizeof(uuid_gid)) ||
379 ip->meta.mode != cur_mode
381 hammer2_inode_modify(ip);
382 ip->meta.uid = uuid_uid;
383 ip->meta.gid = uuid_gid;
384 ip->meta.mode = cur_mode;
385 ip->meta.ctime = ctime;
387 kflags |= NOTE_ATTRIB;
394 if (vap->va_size != VNOVAL && ip->meta.size != vap->va_size) {
397 if (vap->va_size == ip->meta.size)
399 if (vap->va_size < ip->meta.size) {
400 hammer2_truncate_file(ip, vap->va_size);
402 hammer2_extend_file(ip, vap->va_size);
404 hammer2_inode_modify(ip);
405 ip->meta.mtime = ctime;
413 /* atime not supported */
414 if (vap->va_atime.tv_sec != VNOVAL) {
415 hammer2_inode_modify(ip);
416 ip->meta.atime = hammer2_timespec_to_time(&vap->va_atime);
417 kflags |= NOTE_ATTRIB;
420 if (vap->va_mode != (mode_t)VNOVAL) {
421 mode_t cur_mode = ip->meta.mode;
422 uid_t cur_uid = hammer2_to_unix_xid(&ip->meta.uid);
423 gid_t cur_gid = hammer2_to_unix_xid(&ip->meta.gid);
425 error = vop_helper_chmod(ap->a_vp, vap->va_mode, ap->a_cred,
426 cur_uid, cur_gid, &cur_mode);
427 if (error == 0 && ip->meta.mode != cur_mode) {
428 hammer2_inode_modify(ip);
429 ip->meta.mode = cur_mode;
430 ip->meta.ctime = ctime;
431 kflags |= NOTE_ATTRIB;
435 if (vap->va_mtime.tv_sec != VNOVAL) {
436 hammer2_inode_modify(ip);
437 ip->meta.mtime = hammer2_timespec_to_time(&vap->va_mtime);
438 kflags |= NOTE_ATTRIB;
443 * If a truncation occurred we must call inode_fsync() now in order
444 * to trim the related data chains, otherwise a later expansion can
447 * If an extend occured that changed the DIRECTDATA state, we must
448 * call inode_fsync now in order to prepare the inode's indirect
451 if (ip->flags & HAMMER2_INODE_RESIZED)
452 hammer2_inode_fsync(ip);
457 hammer2_inode_unlock(ip);
458 hammer2_trans_done(ip->pmp);
459 hammer2_knote(ip->vp, kflags);
467 hammer2_vop_readdir(struct vop_readdir_args *ap)
469 hammer2_xop_readdir_t *xop;
470 hammer2_blockref_t bref;
487 saveoff = uio->uio_offset;
492 * Setup cookies directory entry cookies if requested
494 if (ap->a_ncookies) {
495 ncookies = uio->uio_resid / 16 + 1;
498 cookies = kmalloc(ncookies * sizeof(off_t), M_TEMP, M_WAITOK);
505 hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED);
508 * Handle artificial entries. To ensure that only positive 64 bit
509 * quantities are returned to userland we always strip off bit 63.
510 * The hash code is designed such that codes 0x0000-0x7FFF are not
511 * used, allowing us to use these codes for articial entries.
513 * Entry 0 is used for '.' and entry 1 is used for '..'. Do not
514 * allow '..' to cross the mount point into (e.g.) the super-root.
517 inum = ip->meta.inum & HAMMER2_DIRHASH_USERMSK;
518 r = vop_write_dirent(&error, uio, inum, DT_DIR, 1, ".");
522 cookies[cookie_index] = saveoff;
525 if (cookie_index == ncookies)
531 * Be careful with lockorder when accessing ".."
533 * (ip is the current dir. xip is the parent dir).
535 inum = ip->meta.inum & HAMMER2_DIRHASH_USERMSK;
536 if (ip->pip && ip != ip->pmp->iroot)
537 inum = ip->pip->meta.inum & HAMMER2_DIRHASH_USERMSK;
538 r = vop_write_dirent(&error, uio, inum, DT_DIR, 2, "..");
542 cookies[cookie_index] = saveoff;
545 if (cookie_index == ncookies)
549 lkey = saveoff | HAMMER2_DIRHASH_VISIBLE;
550 if (hammer2_debug & 0x0020)
551 kprintf("readdir: lkey %016jx\n", lkey);
556 * Use XOP for cluster scan.
558 * parent is the inode cluster, already locked for us. Don't
559 * double lock shared locks as this will screw up upgrades.
561 xop = hammer2_xop_alloc(ip, 0);
563 hammer2_xop_start(&xop->head, hammer2_xop_readdir);
566 const hammer2_inode_data_t *ripdata;
568 error = hammer2_xop_collect(&xop->head, 0);
571 if (cookie_index == ncookies)
573 if (hammer2_debug & 0x0020)
574 kprintf("cluster chain %p %p\n",
575 xop->head.cluster.focus,
576 (xop->head.cluster.focus ?
577 xop->head.cluster.focus->data : (void *)-1));
578 ripdata = &hammer2_cluster_rdata(&xop->head.cluster)->ipdata;
579 hammer2_cluster_bref(&xop->head.cluster, &bref);
580 if (bref.type == HAMMER2_BREF_TYPE_INODE) {
581 dtype = hammer2_get_dtype(ripdata);
582 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK;
583 r = vop_write_dirent(&error, uio,
585 HAMMER2_DIRHASH_USERMSK,
587 ripdata->meta.name_len,
592 cookies[cookie_index] = saveoff;
595 /* XXX chain error */
596 kprintf("bad chain type readdir %d\n", bref.type);
599 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP);
600 if (error == ENOENT) {
603 saveoff = (hammer2_key_t)-1;
605 saveoff = bref.key & HAMMER2_DIRHASH_USERMSK;
608 hammer2_inode_unlock(ip);
610 *ap->a_eofflag = eofflag;
611 if (hammer2_debug & 0x0020)
612 kprintf("readdir: done at %016jx\n", saveoff);
613 uio->uio_offset = saveoff & ~HAMMER2_DIRHASH_VISIBLE;
614 if (error && cookie_index == 0) {
616 kfree(cookies, M_TEMP);
618 *ap->a_cookies = NULL;
622 *ap->a_ncookies = cookie_index;
623 *ap->a_cookies = cookies;
631 * hammer2_vop_readlink { vp, uio, cred }
635 hammer2_vop_readlink(struct vop_readlink_args *ap)
642 if (vp->v_type != VLNK)
646 error = hammer2_read_file(ip, ap->a_uio, 0);
652 hammer2_vop_read(struct vop_read_args *ap)
662 * Read operations supported on this vnode?
665 if (vp->v_type != VREG)
675 seqcount = ap->a_ioflag >> 16;
676 bigread = (uio->uio_resid > 100 * 1024 * 1024);
678 error = hammer2_read_file(ip, uio, seqcount);
684 hammer2_vop_write(struct vop_write_args *ap)
694 * Read operations supported on this vnode?
697 if (vp->v_type != VREG)
706 if (ip->pmp->ronly) {
710 seqcount = ap->a_ioflag >> 16;
713 * Check resource limit
715 if (uio->uio_resid > 0 && (td = uio->uio_td) != NULL && td->td_proc &&
716 uio->uio_offset + uio->uio_resid >
717 td->td_proc->p_rlimit[RLIMIT_FSIZE].rlim_cur) {
718 lwpsignal(td->td_proc, td->td_lwp, SIGXFSZ);
723 * The transaction interlocks against flushes initiations
724 * (note: but will run concurrently with the actual flush).
726 hammer2_trans_init(ip->pmp, 0);
727 error = hammer2_write_file(ip, uio, ap->a_ioflag, seqcount);
728 hammer2_trans_done(ip->pmp);
734 * Perform read operations on a file or symlink given an UNLOCKED
737 * The passed ip is not locked.
741 hammer2_read_file(hammer2_inode_t *ip, struct uio *uio, int seqcount)
752 * WARNING! Assumes that the kernel interlocks size changes at the
755 hammer2_mtx_sh(&ip->lock);
756 size = ip->meta.size;
757 hammer2_mtx_unlock(&ip->lock);
759 while (uio->uio_resid > 0 && uio->uio_offset < size) {
766 lblksize = hammer2_calc_logical(ip, uio->uio_offset,
769 error = cluster_read(ip->vp, leof, lbase, lblksize,
770 uio->uio_resid, seqcount * BKVASIZE,
775 loff = (int)(uio->uio_offset - lbase);
777 if (n > uio->uio_resid)
779 if (n > size - uio->uio_offset)
780 n = (int)(size - uio->uio_offset);
781 bp->b_flags |= B_AGE;
782 uiomove((char *)bp->b_data + loff, n, uio);
789 * Write to the file represented by the inode via the logical buffer cache.
790 * The inode may represent a regular file or a symlink.
792 * The inode must not be locked.
796 hammer2_write_file(hammer2_inode_t *ip, struct uio *uio,
797 int ioflag, int seqcount)
799 hammer2_key_t old_eof;
800 hammer2_key_t new_eof;
809 * WARNING! Assumes that the kernel interlocks size changes at the
812 hammer2_mtx_ex(&ip->lock);
813 if (ioflag & IO_APPEND)
814 uio->uio_offset = ip->meta.size;
815 old_eof = ip->meta.size;
818 * Extend the file if necessary. If the write fails at some point
819 * we will truncate it back down to cover as much as we were able
822 * Doing this now makes it easier to calculate buffer sizes in
829 if (uio->uio_offset + uio->uio_resid > old_eof) {
830 new_eof = uio->uio_offset + uio->uio_resid;
832 hammer2_extend_file(ip, new_eof);
833 kflags |= NOTE_EXTEND;
837 hammer2_mtx_unlock(&ip->lock);
842 while (uio->uio_resid > 0) {
851 * Don't allow the buffer build to blow out the buffer
854 if ((ioflag & IO_RECURSE) == 0)
855 bwillwrite(HAMMER2_PBUFSIZE);
858 * This nominally tells us how much we can cluster and
859 * what the logical buffer size needs to be. Currently
860 * we don't try to cluster the write and just handle one
863 lblksize = hammer2_calc_logical(ip, uio->uio_offset,
865 loff = (int)(uio->uio_offset - lbase);
867 KKASSERT(lblksize <= 65536);
870 * Calculate bytes to copy this transfer and whether the
871 * copy completely covers the buffer or not.
875 if (n > uio->uio_resid) {
877 if (loff == lbase && uio->uio_offset + n == new_eof)
889 if (uio->uio_segflg == UIO_NOCOPY) {
891 * Issuing a write with the same data backing the
892 * buffer. Instantiate the buffer to collect the
893 * backing vm pages, then read-in any missing bits.
895 * This case is used by vop_stdputpages().
897 bp = getblk(ip->vp, lbase, lblksize, GETBLK_BHEAVY, 0);
898 if ((bp->b_flags & B_CACHE) == 0) {
900 error = bread(ip->vp, lbase, lblksize, &bp);
902 } else if (trivial) {
904 * Even though we are entirely overwriting the buffer
905 * we may still have to zero it out to avoid a
906 * mmap/write visibility issue.
908 bp = getblk(ip->vp, lbase, lblksize, GETBLK_BHEAVY, 0);
909 if ((bp->b_flags & B_CACHE) == 0)
913 * Partial overwrite, read in any missing bits then
914 * replace the portion being written.
916 * (The strategy code will detect zero-fill physical
917 * blocks for this case).
919 error = bread(ip->vp, lbase, lblksize, &bp);
930 * Ok, copy the data in
932 error = uiomove(bp->b_data + loff, n, uio);
933 kflags |= NOTE_WRITE;
941 * WARNING: Pageout daemon will issue UIO_NOCOPY writes
942 * with IO_SYNC or IO_ASYNC set. These writes
943 * must be handled as the pageout daemon expects.
945 if (ioflag & IO_SYNC) {
947 } else if ((ioflag & IO_DIRECT) && endofblk) {
949 } else if (ioflag & IO_ASYNC) {
957 * Cleanup. If we extended the file EOF but failed to write through
958 * the entire write is a failure and we have to back-up.
960 if (error && new_eof != old_eof) {
961 hammer2_mtx_ex(&ip->lock);
962 hammer2_truncate_file(ip, old_eof);
963 if (ip->flags & HAMMER2_INODE_MODIFIED)
964 hammer2_inode_fsync(ip);
965 hammer2_mtx_unlock(&ip->lock);
966 } else if (modified) {
967 hammer2_mtx_ex(&ip->lock);
968 hammer2_inode_modify(ip);
969 hammer2_update_time(&ip->meta.mtime);
970 if (ip->flags & HAMMER2_INODE_MODIFIED)
971 hammer2_inode_fsync(ip);
972 hammer2_mtx_unlock(&ip->lock);
973 hammer2_knote(ip->vp, kflags);
975 hammer2_trans_assert_strategy(ip->pmp);
981 * Truncate the size of a file. The inode must not be locked.
983 * We must unconditionally set HAMMER2_INODE_RESIZED to properly
984 * ensure that any on-media data beyond the new file EOF has been destroyed.
986 * WARNING: nvtruncbuf() can only be safely called without the inode lock
987 * held due to the way our write thread works. If the truncation
988 * occurs in the middle of a buffer, nvtruncbuf() is responsible
989 * for dirtying that buffer and zeroing out trailing bytes.
991 * WARNING! Assumes that the kernel interlocks size changes at the
994 * WARNING! Caller assumes responsibility for removing dead blocks
995 * if INODE_RESIZED is set.
999 hammer2_truncate_file(hammer2_inode_t *ip, hammer2_key_t nsize)
1001 hammer2_key_t lbase;
1005 hammer2_mtx_unlock(&ip->lock);
1007 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL);
1008 nvtruncbuf(ip->vp, nsize,
1009 nblksize, (int)nsize & (nblksize - 1),
1012 hammer2_mtx_ex(&ip->lock);
1013 KKASSERT((ip->flags & HAMMER2_INODE_RESIZED) == 0);
1014 ip->osize = ip->meta.size;
1015 ip->meta.size = nsize;
1016 atomic_set_int(&ip->flags, HAMMER2_INODE_MODIFIED |
1017 HAMMER2_INODE_RESIZED);
1022 * Extend the size of a file. The inode must not be locked.
1024 * Even though the file size is changing, we do not have to set the
1025 * INODE_RESIZED bit unless the file size crosses the EMBEDDED_BYTES
1026 * boundary. When this occurs a hammer2_inode_fsync() is required
1027 * to prepare the inode cluster's indirect block table.
1029 * WARNING! Assumes that the kernel interlocks size changes at the
1032 * WARNING! Caller assumes responsibility for transitioning out
1033 * of the inode DIRECTDATA mode if INODE_RESIZED is set.
1037 hammer2_extend_file(hammer2_inode_t *ip, hammer2_key_t nsize)
1039 hammer2_key_t lbase;
1040 hammer2_key_t osize;
1046 KKASSERT((ip->flags & HAMMER2_INODE_RESIZED) == 0);
1047 osize = ip->meta.size;
1049 ip->meta.size = nsize;
1050 atomic_set_int(&ip->flags, HAMMER2_INODE_MODIFIED);
1052 if (osize <= HAMMER2_EMBEDDED_BYTES && nsize > HAMMER2_EMBEDDED_BYTES)
1053 atomic_set_int(&ip->flags, HAMMER2_INODE_RESIZED);
1055 hammer2_mtx_unlock(&ip->lock);
1057 oblksize = hammer2_calc_logical(ip, osize, &lbase, NULL);
1058 nblksize = hammer2_calc_logical(ip, nsize, &lbase, NULL);
1064 hammer2_mtx_ex(&ip->lock);
1071 hammer2_vop_nresolve(struct vop_nresolve_args *ap)
1073 hammer2_xop_nresolve_t *xop;
1074 hammer2_inode_t *ip;
1075 hammer2_inode_t *dip;
1076 struct namecache *ncp;
1081 dip = VTOI(ap->a_dvp);
1082 xop = hammer2_xop_alloc(dip, 0);
1084 ncp = ap->a_nch->ncp;
1085 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen);
1088 * Note: In DragonFly the kernel handles '.' and '..'.
1090 hammer2_inode_lock(dip, HAMMER2_RESOLVE_SHARED);
1091 hammer2_xop_start(&xop->head, hammer2_xop_nresolve);
1093 error = hammer2_xop_collect(&xop->head, 0);
1097 ip = hammer2_inode_get(dip->pmp, dip, &xop->head.cluster, -1);
1099 hammer2_inode_unlock(dip);
1102 * Acquire the related vnode
1104 * NOTE: For error processing, only ENOENT resolves the namecache
1105 * entry to NULL, otherwise we just return the error and
1106 * leave the namecache unresolved.
1108 * NOTE: multiple hammer2_inode structures can be aliased to the
1109 * same chain element, for example for hardlinks. This
1110 * use case does not 'reattach' inode associations that
1111 * might already exist, but always allocates a new one.
1113 * WARNING: inode structure is locked exclusively via inode_get
1114 * but chain was locked shared. inode_unlock()
1115 * will handle it properly.
1118 vp = hammer2_igetv(ip, &error);
1121 cache_setvp(ap->a_nch, vp);
1122 } else if (error == ENOENT) {
1123 cache_setvp(ap->a_nch, NULL);
1125 hammer2_inode_unlock(ip);
1128 * The vp should not be released until after we've disposed
1129 * of our locks, because it might cause vop_inactive() to
1136 cache_setvp(ap->a_nch, NULL);
1138 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP);
1139 KASSERT(error || ap->a_nch->ncp->nc_vp != NULL,
1140 ("resolve error %d/%p ap %p\n",
1141 error, ap->a_nch->ncp->nc_vp, ap));
1149 hammer2_vop_nlookupdotdot(struct vop_nlookupdotdot_args *ap)
1151 hammer2_inode_t *dip;
1152 hammer2_inode_t *ip;
1156 dip = VTOI(ap->a_dvp);
1158 if ((ip = dip->pip) == NULL) {
1163 hammer2_inode_lock(ip, 0);
1164 *ap->a_vpp = hammer2_igetv(ip, &error);
1165 hammer2_inode_unlock(ip);
1173 hammer2_vop_nmkdir(struct vop_nmkdir_args *ap)
1175 hammer2_inode_t *dip;
1176 hammer2_inode_t *nip;
1177 struct namecache *ncp;
1178 const uint8_t *name;
1183 dip = VTOI(ap->a_dvp);
1184 if (dip->pmp->ronly) {
1189 ncp = ap->a_nch->ncp;
1190 name = ncp->nc_name;
1191 name_len = ncp->nc_nlen;
1193 hammer2_pfs_memory_wait(dip->pmp);
1194 hammer2_trans_init(dip->pmp, 0);
1195 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred,
1197 hammer2_trans_newinum(dip->pmp), 0, 0,
1200 KKASSERT(nip == NULL);
1203 *ap->a_vpp = hammer2_igetv(nip, &error);
1204 hammer2_inode_unlock(nip);
1206 hammer2_trans_done(dip->pmp);
1209 cache_setunresolved(ap->a_nch);
1210 cache_setvp(ap->a_nch, *ap->a_vpp);
1218 hammer2_vop_open(struct vop_open_args *ap)
1220 return vop_stdopen(ap);
1224 * hammer2_vop_advlock { vp, id, op, fl, flags }
1228 hammer2_vop_advlock(struct vop_advlock_args *ap)
1230 hammer2_inode_t *ip = VTOI(ap->a_vp);
1233 size = ip->meta.size;
1234 return (lf_advlock(ap, &ip->advlock, size));
1239 hammer2_vop_close(struct vop_close_args *ap)
1241 return vop_stdclose(ap);
1245 * hammer2_vop_nlink { nch, dvp, vp, cred }
1247 * Create a hardlink from (vp) to {dvp, nch}.
1251 hammer2_vop_nlink(struct vop_nlink_args *ap)
1253 hammer2_xop_nlink_t *xop1;
1254 hammer2_inode_t *fdip; /* target directory to create link in */
1255 hammer2_inode_t *tdip; /* target directory to create link in */
1256 hammer2_inode_t *cdip; /* common parent directory */
1257 hammer2_inode_t *ip; /* inode we are hardlinking to */
1258 struct namecache *ncp;
1259 const uint8_t *name;
1264 tdip = VTOI(ap->a_dvp);
1265 if (tdip->pmp->ronly) {
1270 ncp = ap->a_nch->ncp;
1271 name = ncp->nc_name;
1272 name_len = ncp->nc_nlen;
1275 * ip represents the file being hardlinked. The file could be a
1276 * normal file or a hardlink target if it has already been hardlinked.
1277 * If ip is a hardlinked target then ip->pip represents the location
1278 * of the hardlinked target, NOT the location of the hardlink pointer.
1280 * Bump nlinks and potentially also create or move the hardlink
1281 * target in the parent directory common to (ip) and (tdip). The
1282 * consolidation code can modify ip->cluster and ip->pip. The
1283 * returned cluster is locked.
1285 ip = VTOI(ap->a_vp);
1286 hammer2_pfs_memory_wait(ip->pmp);
1287 hammer2_trans_init(ip->pmp, 0);
1290 * The common parent directory must be locked first to avoid deadlocks.
1291 * Also note that fdip and/or tdip might match cdip.
1294 cdip = hammer2_inode_common_parent(fdip, tdip);
1295 hammer2_inode_lock(cdip, 0);
1296 hammer2_inode_lock(fdip, 0);
1297 hammer2_inode_lock(tdip, 0);
1298 hammer2_inode_lock(ip, 0);
1302 * If ip is not a hardlink target we must convert it to a hardlink.
1303 * If fdip != cdip we must shift the inode to cdip.
1305 if (fdip != cdip || (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) {
1306 xop1 = hammer2_xop_alloc(fdip, HAMMER2_XOP_MODIFYING);
1307 hammer2_xop_setip2(&xop1->head, ip);
1308 hammer2_xop_setip3(&xop1->head, cdip);
1310 hammer2_xop_start(&xop1->head, hammer2_xop_nlink);
1311 error = hammer2_xop_collect(&xop1->head, 0);
1312 hammer2_xop_retire(&xop1->head, HAMMER2_XOPMASK_VOP);
1313 if (error == ENOENT)
1318 * Must synchronize original inode whos chains are now a hardlink
1319 * target. We must match what the backend XOP did to the
1322 if (error == 0 && (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) {
1323 hammer2_inode_modify(ip);
1324 ip->meta.name_key = ip->meta.inum;
1325 ip->meta.name_len = 18; /* "0x%016jx" */
1329 * Create the hardlink target and bump nlinks.
1332 hammer2_inode_create(tdip, NULL, NULL,
1335 HAMMER2_OBJTYPE_HARDLINK, ip->meta.type,
1337 hammer2_inode_modify(ip);
1341 cache_setunresolved(ap->a_nch);
1342 cache_setvp(ap->a_nch, ap->a_vp);
1344 hammer2_inode_unlock(ip);
1345 hammer2_inode_unlock(tdip);
1346 hammer2_inode_unlock(fdip);
1347 hammer2_inode_unlock(cdip);
1348 hammer2_inode_drop(cdip);
1349 hammer2_trans_done(ip->pmp);
1356 * hammer2_vop_ncreate { nch, dvp, vpp, cred, vap }
1358 * The operating system has already ensured that the directory entry
1359 * does not exist and done all appropriate namespace locking.
1363 hammer2_vop_ncreate(struct vop_ncreate_args *ap)
1365 hammer2_inode_t *dip;
1366 hammer2_inode_t *nip;
1367 struct namecache *ncp;
1368 const uint8_t *name;
1373 dip = VTOI(ap->a_dvp);
1374 if (dip->pmp->ronly) {
1379 ncp = ap->a_nch->ncp;
1380 name = ncp->nc_name;
1381 name_len = ncp->nc_nlen;
1382 hammer2_pfs_memory_wait(dip->pmp);
1383 hammer2_trans_init(dip->pmp, 0);
1385 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred,
1387 hammer2_trans_newinum(dip->pmp), 0, 0,
1390 KKASSERT(nip == NULL);
1393 *ap->a_vpp = hammer2_igetv(nip, &error);
1394 hammer2_inode_unlock(nip);
1396 hammer2_trans_done(dip->pmp);
1399 cache_setunresolved(ap->a_nch);
1400 cache_setvp(ap->a_nch, *ap->a_vpp);
1407 * Make a device node (typically a fifo)
1411 hammer2_vop_nmknod(struct vop_nmknod_args *ap)
1413 hammer2_inode_t *dip;
1414 hammer2_inode_t *nip;
1415 struct namecache *ncp;
1416 const uint8_t *name;
1421 dip = VTOI(ap->a_dvp);
1422 if (dip->pmp->ronly) {
1427 ncp = ap->a_nch->ncp;
1428 name = ncp->nc_name;
1429 name_len = ncp->nc_nlen;
1430 hammer2_pfs_memory_wait(dip->pmp);
1431 hammer2_trans_init(dip->pmp, 0);
1433 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred,
1435 hammer2_trans_newinum(dip->pmp), 0, 0,
1438 KKASSERT(nip == NULL);
1441 *ap->a_vpp = hammer2_igetv(nip, &error);
1442 hammer2_inode_unlock(nip);
1444 hammer2_trans_done(dip->pmp);
1447 cache_setunresolved(ap->a_nch);
1448 cache_setvp(ap->a_nch, *ap->a_vpp);
1455 * hammer2_vop_nsymlink { nch, dvp, vpp, cred, vap, target }
1459 hammer2_vop_nsymlink(struct vop_nsymlink_args *ap)
1461 hammer2_inode_t *dip;
1462 hammer2_inode_t *nip;
1463 struct namecache *ncp;
1464 const uint8_t *name;
1468 dip = VTOI(ap->a_dvp);
1469 if (dip->pmp->ronly)
1472 ncp = ap->a_nch->ncp;
1473 name = ncp->nc_name;
1474 name_len = ncp->nc_nlen;
1475 hammer2_pfs_memory_wait(dip->pmp);
1476 hammer2_trans_init(dip->pmp, 0);
1478 ap->a_vap->va_type = VLNK; /* enforce type */
1480 nip = hammer2_inode_create(dip, ap->a_vap, ap->a_cred,
1482 hammer2_trans_newinum(dip->pmp), 0, 0,
1485 KKASSERT(nip == NULL);
1487 hammer2_trans_done(dip->pmp);
1490 *ap->a_vpp = hammer2_igetv(nip, &error);
1493 * Build the softlink (~like file data) and finalize the namecache.
1500 bytes = strlen(ap->a_target);
1502 hammer2_inode_unlock(nip);
1503 bzero(&auio, sizeof(auio));
1504 bzero(&aiov, sizeof(aiov));
1505 auio.uio_iov = &aiov;
1506 auio.uio_segflg = UIO_SYSSPACE;
1507 auio.uio_rw = UIO_WRITE;
1508 auio.uio_resid = bytes;
1509 auio.uio_iovcnt = 1;
1510 auio.uio_td = curthread;
1511 aiov.iov_base = ap->a_target;
1512 aiov.iov_len = bytes;
1513 error = hammer2_write_file(nip, &auio, IO_APPEND, 0);
1514 /* XXX handle error */
1517 hammer2_inode_unlock(nip);
1519 hammer2_trans_done(dip->pmp);
1522 * Finalize namecache
1525 cache_setunresolved(ap->a_nch);
1526 cache_setvp(ap->a_nch, *ap->a_vpp);
1527 /* hammer2_knote(ap->a_dvp, NOTE_WRITE); */
1533 * hammer2_vop_nremove { nch, dvp, cred }
1537 hammer2_vop_nremove(struct vop_nremove_args *ap)
1539 hammer2_xop_unlink_t *xop;
1540 hammer2_inode_t *dip;
1541 hammer2_inode_t *ip;
1542 struct namecache *ncp;
1547 dip = VTOI(ap->a_dvp);
1548 if (dip->pmp->ronly) {
1553 ncp = ap->a_nch->ncp;
1555 hammer2_pfs_memory_wait(dip->pmp);
1556 hammer2_trans_init(dip->pmp, 0);
1557 hammer2_inode_lock(dip, 0);
1560 * The unlink XOP unlinks the path from the directory and
1561 * locates and returns the cluster associated with the real inode.
1562 * We have to handle nlinks here on the frontend.
1564 xop = hammer2_xop_alloc(dip, HAMMER2_XOP_MODIFYING);
1565 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen);
1566 isopen = cache_isopen(ap->a_nch);
1568 xop->dopermanent = isopen ? 0 : HAMMER2_DELETE_PERMANENT;
1569 hammer2_xop_start(&xop->head, hammer2_xop_unlink);
1572 * Collect the real inode and adjust nlinks, destroy the real
1573 * inode if nlinks transitions to 0 and it was the real inode
1574 * (else it has already been removed).
1576 error = hammer2_xop_collect(&xop->head, 0);
1577 hammer2_inode_unlock(dip);
1580 ip = hammer2_inode_get(dip->pmp, dip, &xop->head.cluster, -1);
1581 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP);
1583 hammer2_inode_unlink_finisher(ip, isopen);
1584 hammer2_inode_unlock(ip);
1587 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP);
1590 hammer2_inode_run_unlinkq(dip->pmp);
1591 hammer2_trans_done(dip->pmp);
1593 cache_unlink(ap->a_nch);
1599 * hammer2_vop_nrmdir { nch, dvp, cred }
1603 hammer2_vop_nrmdir(struct vop_nrmdir_args *ap)
1605 hammer2_xop_unlink_t *xop;
1606 hammer2_inode_t *dip;
1607 hammer2_inode_t *ip;
1608 struct namecache *ncp;
1613 dip = VTOI(ap->a_dvp);
1614 if (dip->pmp->ronly) {
1619 hammer2_pfs_memory_wait(dip->pmp);
1620 hammer2_trans_init(dip->pmp, 0);
1621 hammer2_inode_lock(dip, 0);
1623 xop = hammer2_xop_alloc(dip, HAMMER2_XOP_MODIFYING);
1625 ncp = ap->a_nch->ncp;
1626 hammer2_xop_setname(&xop->head, ncp->nc_name, ncp->nc_nlen);
1627 isopen = cache_isopen(ap->a_nch);
1629 xop->dopermanent = isopen ? 0 : HAMMER2_DELETE_PERMANENT;
1630 hammer2_xop_start(&xop->head, hammer2_xop_unlink);
1633 * Collect the real inode and adjust nlinks, destroy the real
1634 * inode if nlinks transitions to 0 and it was the real inode
1635 * (else it has already been removed).
1637 error = hammer2_xop_collect(&xop->head, 0);
1638 hammer2_inode_unlock(dip);
1641 ip = hammer2_inode_get(dip->pmp, dip, &xop->head.cluster, -1);
1642 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP);
1644 hammer2_inode_unlink_finisher(ip, isopen);
1645 hammer2_inode_unlock(ip);
1648 hammer2_xop_retire(&xop->head, HAMMER2_XOPMASK_VOP);
1650 hammer2_inode_run_unlinkq(dip->pmp);
1651 hammer2_trans_done(dip->pmp);
1653 cache_unlink(ap->a_nch);
1659 * hammer2_vop_nrename { fnch, tnch, fdvp, tdvp, cred }
1663 hammer2_vop_nrename(struct vop_nrename_args *ap)
1665 struct namecache *fncp;
1666 struct namecache *tncp;
1667 hammer2_inode_t *cdip;
1668 hammer2_inode_t *fdip;
1669 hammer2_inode_t *tdip;
1670 hammer2_inode_t *ip;
1671 const uint8_t *fname;
1673 const uint8_t *tname;
1679 if (ap->a_fdvp->v_mount != ap->a_tdvp->v_mount)
1681 if (ap->a_fdvp->v_mount != ap->a_fnch->ncp->nc_vp->v_mount)
1684 fdip = VTOI(ap->a_fdvp); /* source directory */
1685 tdip = VTOI(ap->a_tdvp); /* target directory */
1687 if (fdip->pmp->ronly)
1691 fncp = ap->a_fnch->ncp; /* entry name in source */
1692 fname = fncp->nc_name;
1693 fname_len = fncp->nc_nlen;
1695 tncp = ap->a_tnch->ncp; /* entry name in target */
1696 tname = tncp->nc_name;
1697 tname_len = tncp->nc_nlen;
1699 hammer2_pfs_memory_wait(tdip->pmp);
1700 hammer2_trans_init(tdip->pmp, 0);
1703 * ip is the inode being renamed. If this is a hardlink then
1704 * ip represents the actual file and not the hardlink marker.
1706 ip = VTOI(fncp->nc_vp);
1709 * The common parent directory must be locked first to avoid deadlocks.
1710 * Also note that fdip and/or tdip might match cdip.
1712 cdip = hammer2_inode_common_parent(ip->pip, tdip);
1713 hammer2_inode_lock(cdip, 0);
1714 hammer2_inode_lock(fdip, 0);
1715 hammer2_inode_lock(tdip, 0);
1716 hammer2_inode_ref(ip); /* extra ref */
1720 * If ip is a hardlink target and fdip != cdip we must shift the
1724 (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE) == 0) {
1725 hammer2_xop_nlink_t *xop1;
1727 xop1 = hammer2_xop_alloc(fdip, HAMMER2_XOP_MODIFYING);
1728 hammer2_xop_setip2(&xop1->head, ip);
1729 hammer2_xop_setip3(&xop1->head, cdip);
1731 hammer2_xop_start(&xop1->head, hammer2_xop_nlink);
1732 error = hammer2_xop_collect(&xop1->head, 0);
1733 hammer2_xop_retire(&xop1->head, HAMMER2_XOPMASK_VOP);
1737 * Delete the target namespace.
1740 hammer2_xop_unlink_t *xop2;
1741 hammer2_inode_t *tip;
1745 * The unlink XOP unlinks the path from the directory and
1746 * locates and returns the cluster associated with the real
1747 * inode. We have to handle nlinks here on the frontend.
1749 xop2 = hammer2_xop_alloc(tdip, HAMMER2_XOP_MODIFYING);
1750 hammer2_xop_setname(&xop2->head, tname, tname_len);
1751 isopen = cache_isopen(ap->a_tnch);
1753 xop2->dopermanent = isopen ? 0 : HAMMER2_DELETE_PERMANENT;
1754 hammer2_xop_start(&xop2->head, hammer2_xop_unlink);
1757 * Collect the real inode and adjust nlinks, destroy the real
1758 * inode if nlinks transitions to 0 and it was the real inode
1759 * (else it has already been removed).
1761 tnch_error = hammer2_xop_collect(&xop2->head, 0);
1762 /* hammer2_inode_unlock(tdip); */
1764 if (tnch_error == 0) {
1765 tip = hammer2_inode_get(tdip->pmp, NULL,
1766 &xop2->head.cluster, -1);
1767 hammer2_xop_retire(&xop2->head, HAMMER2_XOPMASK_VOP);
1769 hammer2_inode_unlink_finisher(tip, isopen);
1770 hammer2_inode_unlock(tip);
1773 hammer2_xop_retire(&xop2->head, HAMMER2_XOPMASK_VOP);
1775 /* hammer2_inode_lock(tdip, 0); */
1777 if (tnch_error && tnch_error != ENOENT) {
1784 * Resolve the collision space for (tdip, tname, tname_len)
1786 * tdip must be held exclusively locked to prevent races.
1789 hammer2_xop_scanlhc_t *sxop;
1790 hammer2_tid_t lhcbase;
1792 tlhc = hammer2_dirhash(tname, tname_len);
1794 sxop = hammer2_xop_alloc(tdip, HAMMER2_XOP_MODIFYING);
1796 hammer2_xop_start(&sxop->head, hammer2_xop_scanlhc);
1797 while ((error = hammer2_xop_collect(&sxop->head, 0)) == 0) {
1798 if (tlhc != sxop->head.cluster.focus->bref.key)
1802 hammer2_xop_retire(&sxop->head, HAMMER2_XOPMASK_VOP);
1805 if (error != ENOENT)
1810 if ((lhcbase ^ tlhc) & ~HAMMER2_DIRHASH_LOMASK) {
1817 * Everything is setup, do the rename.
1819 * We have to synchronize ip->meta to the underlying operation.
1821 * NOTE: To avoid deadlocks we cannot lock (ip) while we are
1822 * unlinking elements from their directories. Locking
1823 * the nlinks field does not lock the whole inode.
1825 hammer2_inode_lock(ip, 0);
1827 hammer2_xop_nrename_t *xop4;
1829 xop4 = hammer2_xop_alloc(fdip, HAMMER2_XOP_MODIFYING);
1831 xop4->ip_key = ip->meta.name_key;
1832 hammer2_xop_setip2(&xop4->head, ip);
1833 hammer2_xop_setip3(&xop4->head, tdip);
1834 hammer2_xop_setname(&xop4->head, fname, fname_len);
1835 hammer2_xop_setname2(&xop4->head, tname, tname_len);
1836 hammer2_xop_start(&xop4->head, hammer2_xop_nrename);
1838 error = hammer2_xop_collect(&xop4->head, 0);
1839 hammer2_xop_retire(&xop4->head, HAMMER2_XOPMASK_VOP);
1841 if (error == ENOENT)
1844 (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) {
1845 hammer2_inode_modify(ip);
1846 ip->meta.name_len = tname_len;
1847 ip->meta.name_key = tlhc;
1853 * Fixup ip->pip if we were renaming the actual file and not a
1856 if (error == 0 && (ip->meta.name_key & HAMMER2_DIRHASH_VISIBLE)) {
1857 hammer2_inode_t *opip;
1859 if (ip->pip != tdip) {
1860 hammer2_inode_ref(tdip);
1864 hammer2_inode_drop(opip);
1867 hammer2_inode_unlock(ip);
1869 hammer2_inode_unlock(tdip);
1870 hammer2_inode_unlock(fdip);
1871 hammer2_inode_unlock(cdip);
1872 hammer2_inode_drop(ip);
1873 hammer2_inode_drop(cdip);
1874 hammer2_inode_run_unlinkq(fdip->pmp);
1875 hammer2_trans_done(tdip->pmp);
1878 * Issue the namecache update after unlocking all the internal
1879 * hammer structures, otherwise we might deadlock.
1881 if (tnch_error == 0) {
1882 cache_unlink(ap->a_tnch);
1883 cache_setunresolved(ap->a_tnch);
1886 cache_rename(ap->a_fnch, ap->a_tnch);
1893 * hammer2_vop_ioctl { vp, command, data, fflag, cred }
1897 hammer2_vop_ioctl(struct vop_ioctl_args *ap)
1899 hammer2_inode_t *ip;
1903 ip = VTOI(ap->a_vp);
1905 error = hammer2_ioctl(ip, ap->a_command, (void *)ap->a_data,
1906 ap->a_fflag, ap->a_cred);
1913 hammer2_vop_mountctl(struct vop_mountctl_args *ap)
1921 case (MOUNTCTL_SET_EXPORT):
1922 mp = ap->a_head.a_ops->head.vv_mount;
1925 if (ap->a_ctllen != sizeof(struct export_args))
1928 rc = vfs_export(mp, &pmp->export,
1929 (const struct export_args *)ap->a_ctl);
1932 rc = vop_stdmountctl(ap);
1942 static void filt_hammer2detach(struct knote *kn);
1943 static int filt_hammer2read(struct knote *kn, long hint);
1944 static int filt_hammer2write(struct knote *kn, long hint);
1945 static int filt_hammer2vnode(struct knote *kn, long hint);
1947 static struct filterops hammer2read_filtops =
1948 { FILTEROP_ISFD | FILTEROP_MPSAFE,
1949 NULL, filt_hammer2detach, filt_hammer2read };
1950 static struct filterops hammer2write_filtops =
1951 { FILTEROP_ISFD | FILTEROP_MPSAFE,
1952 NULL, filt_hammer2detach, filt_hammer2write };
1953 static struct filterops hammer2vnode_filtops =
1954 { FILTEROP_ISFD | FILTEROP_MPSAFE,
1955 NULL, filt_hammer2detach, filt_hammer2vnode };
1959 hammer2_vop_kqfilter(struct vop_kqfilter_args *ap)
1961 struct vnode *vp = ap->a_vp;
1962 struct knote *kn = ap->a_kn;
1964 switch (kn->kn_filter) {
1966 kn->kn_fop = &hammer2read_filtops;
1969 kn->kn_fop = &hammer2write_filtops;
1972 kn->kn_fop = &hammer2vnode_filtops;
1975 return (EOPNOTSUPP);
1978 kn->kn_hook = (caddr_t)vp;
1980 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1986 filt_hammer2detach(struct knote *kn)
1988 struct vnode *vp = (void *)kn->kn_hook;
1990 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1994 filt_hammer2read(struct knote *kn, long hint)
1996 struct vnode *vp = (void *)kn->kn_hook;
1997 hammer2_inode_t *ip = VTOI(vp);
2000 if (hint == NOTE_REVOKE) {
2001 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2004 off = ip->meta.size - kn->kn_fp->f_offset;
2005 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX;
2006 if (kn->kn_sfflags & NOTE_OLDAPI)
2008 return (kn->kn_data != 0);
2013 filt_hammer2write(struct knote *kn, long hint)
2015 if (hint == NOTE_REVOKE)
2016 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2022 filt_hammer2vnode(struct knote *kn, long hint)
2024 if (kn->kn_sfflags & hint)
2025 kn->kn_fflags |= hint;
2026 if (hint == NOTE_REVOKE) {
2027 kn->kn_flags |= (EV_EOF | EV_NODATA);
2030 return (kn->kn_fflags != 0);
2038 hammer2_vop_markatime(struct vop_markatime_args *ap)
2040 hammer2_inode_t *ip;
2053 hammer2_vop_fifokqfilter(struct vop_kqfilter_args *ap)
2057 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
2059 error = hammer2_vop_kqfilter(ap);
2066 struct vop_ops hammer2_vnode_vops = {
2067 .vop_default = vop_defaultop,
2068 .vop_fsync = hammer2_vop_fsync,
2069 .vop_getpages = vop_stdgetpages,
2070 .vop_putpages = vop_stdputpages,
2071 .vop_access = hammer2_vop_access,
2072 .vop_advlock = hammer2_vop_advlock,
2073 .vop_close = hammer2_vop_close,
2074 .vop_nlink = hammer2_vop_nlink,
2075 .vop_ncreate = hammer2_vop_ncreate,
2076 .vop_nsymlink = hammer2_vop_nsymlink,
2077 .vop_nremove = hammer2_vop_nremove,
2078 .vop_nrmdir = hammer2_vop_nrmdir,
2079 .vop_nrename = hammer2_vop_nrename,
2080 .vop_getattr = hammer2_vop_getattr,
2081 .vop_setattr = hammer2_vop_setattr,
2082 .vop_readdir = hammer2_vop_readdir,
2083 .vop_readlink = hammer2_vop_readlink,
2084 .vop_getpages = vop_stdgetpages,
2085 .vop_putpages = vop_stdputpages,
2086 .vop_read = hammer2_vop_read,
2087 .vop_write = hammer2_vop_write,
2088 .vop_open = hammer2_vop_open,
2089 .vop_inactive = hammer2_vop_inactive,
2090 .vop_reclaim = hammer2_vop_reclaim,
2091 .vop_nresolve = hammer2_vop_nresolve,
2092 .vop_nlookupdotdot = hammer2_vop_nlookupdotdot,
2093 .vop_nmkdir = hammer2_vop_nmkdir,
2094 .vop_nmknod = hammer2_vop_nmknod,
2095 .vop_ioctl = hammer2_vop_ioctl,
2096 .vop_mountctl = hammer2_vop_mountctl,
2097 .vop_bmap = hammer2_vop_bmap,
2098 .vop_strategy = hammer2_vop_strategy,
2099 .vop_kqfilter = hammer2_vop_kqfilter
2102 struct vop_ops hammer2_spec_vops = {
2103 .vop_default = vop_defaultop,
2104 .vop_fsync = hammer2_vop_fsync,
2105 .vop_read = vop_stdnoread,
2106 .vop_write = vop_stdnowrite,
2107 .vop_access = hammer2_vop_access,
2108 .vop_close = hammer2_vop_close,
2109 .vop_markatime = hammer2_vop_markatime,
2110 .vop_getattr = hammer2_vop_getattr,
2111 .vop_inactive = hammer2_vop_inactive,
2112 .vop_reclaim = hammer2_vop_reclaim,
2113 .vop_setattr = hammer2_vop_setattr
2116 struct vop_ops hammer2_fifo_vops = {
2117 .vop_default = fifo_vnoperate,
2118 .vop_fsync = hammer2_vop_fsync,
2120 .vop_read = hammer2_vop_fiforead,
2121 .vop_write = hammer2_vop_fifowrite,
2123 .vop_access = hammer2_vop_access,
2125 .vop_close = hammer2_vop_fifoclose,
2127 .vop_markatime = hammer2_vop_markatime,
2128 .vop_getattr = hammer2_vop_getattr,
2129 .vop_inactive = hammer2_vop_inactive,
2130 .vop_reclaim = hammer2_vop_reclaim,
2131 .vop_setattr = hammer2_vop_setattr,
2132 .vop_kqfilter = hammer2_vop_fifokqfilter