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>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * WARNING! The ioctl functions which manipulate the connection state need
39 * to be able to run without deadlock on the volume's chain lock.
40 * Most of these functions use a separate lock.
45 static int hammer2_ioctl_version_get(hammer2_inode_t
*ip
, void *data
);
46 static int hammer2_ioctl_recluster(hammer2_inode_t
*ip
, void *data
);
47 static int hammer2_ioctl_remote_scan(hammer2_inode_t
*ip
, void *data
);
48 static int hammer2_ioctl_remote_add(hammer2_inode_t
*ip
, void *data
);
49 static int hammer2_ioctl_remote_del(hammer2_inode_t
*ip
, void *data
);
50 static int hammer2_ioctl_remote_rep(hammer2_inode_t
*ip
, void *data
);
51 static int hammer2_ioctl_socket_get(hammer2_inode_t
*ip
, void *data
);
52 static int hammer2_ioctl_socket_set(hammer2_inode_t
*ip
, void *data
);
53 static int hammer2_ioctl_pfs_get(hammer2_inode_t
*ip
, void *data
);
54 static int hammer2_ioctl_pfs_lookup(hammer2_inode_t
*ip
, void *data
);
55 static int hammer2_ioctl_pfs_create(hammer2_inode_t
*ip
, void *data
);
56 static int hammer2_ioctl_pfs_snapshot(hammer2_inode_t
*ip
, void *data
);
57 static int hammer2_ioctl_pfs_delete(hammer2_inode_t
*ip
, void *data
);
58 static int hammer2_ioctl_inode_get(hammer2_inode_t
*ip
, void *data
);
59 static int hammer2_ioctl_inode_set(hammer2_inode_t
*ip
, void *data
);
60 static int hammer2_ioctl_debug_dump(hammer2_inode_t
*ip
);
61 //static int hammer2_ioctl_inode_comp_set(hammer2_inode_t *ip, void *data);
62 //static int hammer2_ioctl_inode_comp_rec_set(hammer2_inode_t *ip, void *data);
63 //static int hammer2_ioctl_inode_comp_rec_set2(hammer2_inode_t *ip, void *data);
64 static int hammer2_ioctl_bulkfree_scan(hammer2_inode_t
*ip
, void *data
);
65 static int hammer2_ioctl_destroy(hammer2_inode_t
*ip
, void *data
);
68 hammer2_ioctl(hammer2_inode_t
*ip
, u_long com
, void *data
, int fflag
,
74 * Standard root cred checks, will be selectively ignored below
75 * for ioctls that do not require root creds.
77 error
= priv_check_cred(cred
, PRIV_HAMMER_IOCTL
, 0);
80 case HAMMER2IOC_VERSION_GET
:
81 error
= hammer2_ioctl_version_get(ip
, data
);
83 case HAMMER2IOC_RECLUSTER
:
85 error
= hammer2_ioctl_recluster(ip
, data
);
87 case HAMMER2IOC_REMOTE_SCAN
:
89 error
= hammer2_ioctl_remote_scan(ip
, data
);
91 case HAMMER2IOC_REMOTE_ADD
:
93 error
= hammer2_ioctl_remote_add(ip
, data
);
95 case HAMMER2IOC_REMOTE_DEL
:
97 error
= hammer2_ioctl_remote_del(ip
, data
);
99 case HAMMER2IOC_REMOTE_REP
:
101 error
= hammer2_ioctl_remote_rep(ip
, data
);
103 case HAMMER2IOC_SOCKET_GET
:
105 error
= hammer2_ioctl_socket_get(ip
, data
);
107 case HAMMER2IOC_SOCKET_SET
:
109 error
= hammer2_ioctl_socket_set(ip
, data
);
111 case HAMMER2IOC_PFS_GET
:
113 error
= hammer2_ioctl_pfs_get(ip
, data
);
115 case HAMMER2IOC_PFS_LOOKUP
:
117 error
= hammer2_ioctl_pfs_lookup(ip
, data
);
119 case HAMMER2IOC_PFS_CREATE
:
121 error
= hammer2_ioctl_pfs_create(ip
, data
);
123 case HAMMER2IOC_PFS_DELETE
:
125 error
= hammer2_ioctl_pfs_delete(ip
, data
);
127 case HAMMER2IOC_PFS_SNAPSHOT
:
129 error
= hammer2_ioctl_pfs_snapshot(ip
, data
);
131 case HAMMER2IOC_INODE_GET
:
132 error
= hammer2_ioctl_inode_get(ip
, data
);
134 case HAMMER2IOC_INODE_SET
:
136 error
= hammer2_ioctl_inode_set(ip
, data
);
138 case HAMMER2IOC_BULKFREE_SCAN
:
139 error
= hammer2_ioctl_bulkfree_scan(ip
, data
);
141 case HAMMER2IOC_BULKFREE_ASYNC
:
142 error
= hammer2_ioctl_bulkfree_scan(ip
, NULL
);
144 /*case HAMMER2IOC_INODE_COMP_SET:
145 error = hammer2_ioctl_inode_comp_set(ip, data);
147 case HAMMER2IOC_INODE_COMP_REC_SET:
148 error = hammer2_ioctl_inode_comp_rec_set(ip, data);
150 case HAMMER2IOC_INODE_COMP_REC_SET2:
151 error = hammer2_ioctl_inode_comp_rec_set2(ip, data);
153 case HAMMER2IOC_DESTROY
:
155 error
= hammer2_ioctl_destroy(ip
, data
);
157 case HAMMER2IOC_DEBUG_DUMP
:
158 error
= hammer2_ioctl_debug_dump(ip
);
168 * Retrieve version and basic info
171 hammer2_ioctl_version_get(hammer2_inode_t
*ip
, void *data
)
173 hammer2_ioc_version_t
*version
= data
;
176 hmp
= ip
->pmp
->pfs_hmps
[0];
178 version
->version
= hmp
->voldata
.version
;
180 version
->version
= -1;
185 hammer2_ioctl_recluster(hammer2_inode_t
*ip
, void *data
)
187 hammer2_ioc_recluster_t
*recl
= data
;
188 struct vnode
*vproot
;
190 hammer2_cluster_t
*cluster
;
193 fp
= holdfp(curproc
->p_fd
, recl
->fd
, -1);
195 error
= VFS_ROOT(ip
->pmp
->mp
, &vproot
);
197 cluster
= &ip
->pmp
->iroot
->cluster
;
198 kprintf("reconnect to cluster: nc=%d focus=%p\n",
199 cluster
->nchains
, cluster
->focus
);
200 if (cluster
->nchains
!= 1 || cluster
->focus
== NULL
) {
201 kprintf("not a local device mount\n");
204 hammer2_cluster_reconnect(cluster
->focus
->hmp
,
218 * Retrieve information about a remote
221 hammer2_ioctl_remote_scan(hammer2_inode_t
*ip
, void *data
)
224 hammer2_ioc_remote_t
*remote
= data
;
225 int copyid
= remote
->copyid
;
227 hmp
= ip
->pmp
->pfs_hmps
[0];
231 if (copyid
< 0 || copyid
>= HAMMER2_COPYID_COUNT
)
234 hammer2_voldata_lock(hmp
);
235 remote
->copy1
= hmp
->voldata
.copyinfo
[copyid
];
236 hammer2_voldata_unlock(hmp
);
239 * Adjust nextid (GET only)
241 while (++copyid
< HAMMER2_COPYID_COUNT
&&
242 hmp
->voldata
.copyinfo
[copyid
].copyid
== 0) {
245 if (copyid
== HAMMER2_COPYID_COUNT
)
248 remote
->nextid
= copyid
;
254 * Add new remote entry
257 hammer2_ioctl_remote_add(hammer2_inode_t
*ip
, void *data
)
259 hammer2_ioc_remote_t
*remote
= data
;
260 hammer2_pfs_t
*pmp
= ip
->pmp
;
262 int copyid
= remote
->copyid
;
265 hmp
= pmp
->pfs_hmps
[0];
268 if (copyid
>= HAMMER2_COPYID_COUNT
)
271 hammer2_voldata_lock(hmp
);
273 for (copyid
= 1; copyid
< HAMMER2_COPYID_COUNT
; ++copyid
) {
274 if (hmp
->voldata
.copyinfo
[copyid
].copyid
== 0)
277 if (copyid
== HAMMER2_COPYID_COUNT
) {
282 hammer2_voldata_modify(hmp
);
283 remote
->copy1
.copyid
= copyid
;
284 hmp
->voldata
.copyinfo
[copyid
] = remote
->copy1
;
285 hammer2_volconf_update(hmp
, copyid
);
287 hammer2_voldata_unlock(hmp
);
292 * Delete existing remote entry
295 hammer2_ioctl_remote_del(hammer2_inode_t
*ip
, void *data
)
297 hammer2_ioc_remote_t
*remote
= data
;
298 hammer2_pfs_t
*pmp
= ip
->pmp
;
300 int copyid
= remote
->copyid
;
303 hmp
= pmp
->pfs_hmps
[0];
306 if (copyid
>= HAMMER2_COPYID_COUNT
)
308 remote
->copy1
.path
[sizeof(remote
->copy1
.path
) - 1] = 0;
309 hammer2_voldata_lock(hmp
);
311 for (copyid
= 1; copyid
< HAMMER2_COPYID_COUNT
; ++copyid
) {
312 if (hmp
->voldata
.copyinfo
[copyid
].copyid
== 0)
314 if (strcmp(remote
->copy1
.path
,
315 hmp
->voldata
.copyinfo
[copyid
].path
) == 0) {
319 if (copyid
== HAMMER2_COPYID_COUNT
) {
324 hammer2_voldata_modify(hmp
);
325 hmp
->voldata
.copyinfo
[copyid
].copyid
= 0;
326 hammer2_volconf_update(hmp
, copyid
);
328 hammer2_voldata_unlock(hmp
);
333 * Replace existing remote entry
336 hammer2_ioctl_remote_rep(hammer2_inode_t
*ip
, void *data
)
338 hammer2_ioc_remote_t
*remote
= data
;
340 int copyid
= remote
->copyid
;
342 hmp
= ip
->pmp
->pfs_hmps
[0];
345 if (copyid
< 0 || copyid
>= HAMMER2_COPYID_COUNT
)
348 hammer2_voldata_lock(hmp
);
349 hammer2_voldata_modify(hmp
);
350 /*hammer2_volconf_update(hmp, copyid);*/
351 hammer2_voldata_unlock(hmp
);
357 * Retrieve communications socket
360 hammer2_ioctl_socket_get(hammer2_inode_t
*ip
, void *data
)
366 * Set communications socket for connection
369 hammer2_ioctl_socket_set(hammer2_inode_t
*ip
, void *data
)
371 hammer2_ioc_remote_t
*remote
= data
;
373 int copyid
= remote
->copyid
;
375 hmp
= ip
->pmp
->pfs_hmps
[0];
378 if (copyid
< 0 || copyid
>= HAMMER2_COPYID_COUNT
)
381 hammer2_voldata_lock(hmp
);
382 hammer2_voldata_unlock(hmp
);
388 * Used to scan and retrieve PFS information. PFS's are directories under
391 * To scan PFSs pass name_key=0. The function will scan for the next
392 * PFS and set all fields, as well as set name_next to the next key.
393 * When no PFSs remain, name_next is set to (hammer2_key_t)-1.
395 * To retrieve a particular PFS by key, specify the key but note that
396 * the ioctl will return the lowest key >= specified_key, so the caller
397 * must verify the key.
399 * To retrieve the PFS associated with the file descriptor, pass
400 * name_key set to (hammer2_key_t)-1.
403 hammer2_ioctl_pfs_get(hammer2_inode_t
*ip
, void *data
)
405 const hammer2_inode_data_t
*ripdata
;
407 hammer2_ioc_pfs_t
*pfs
;
408 hammer2_chain_t
*parent
;
409 hammer2_chain_t
*chain
;
410 hammer2_key_t key_next
;
411 hammer2_key_t save_key
;
414 hmp
= ip
->pmp
->pfs_hmps
[0];
419 save_key
= pfs
->name_key
;
425 if (save_key
== (hammer2_key_t
)-1) {
426 hammer2_inode_lock(ip
->pmp
->iroot
, 0);
428 chain
= hammer2_inode_chain(ip
->pmp
->iroot
, 0,
429 HAMMER2_RESOLVE_ALWAYS
|
430 HAMMER2_RESOLVE_SHARED
);
432 hammer2_inode_lock(hmp
->spmp
->iroot
, 0);
433 parent
= hammer2_inode_chain(hmp
->spmp
->iroot
, 0,
434 HAMMER2_RESOLVE_ALWAYS
|
435 HAMMER2_RESOLVE_SHARED
);
436 chain
= hammer2_chain_lookup(&parent
, &key_next
,
437 pfs
->name_key
, HAMMER2_KEY_MAX
,
439 HAMMER2_LOOKUP_SHARED
);
446 if (chain
->bref
.type
== HAMMER2_BREF_TYPE_INODE
)
448 if (parent
== NULL
) {
449 hammer2_chain_unlock(chain
);
450 hammer2_chain_drop(chain
);
454 chain
= hammer2_chain_next(&parent
, chain
, &key_next
,
455 key_next
, HAMMER2_KEY_MAX
,
457 HAMMER2_LOOKUP_SHARED
);
459 error
= hammer2_error_to_errno(error
);
462 * Load the data being returned by the ioctl.
464 if (chain
&& chain
->error
== 0) {
465 ripdata
= &chain
->data
->ipdata
;
466 pfs
->name_key
= ripdata
->meta
.name_key
;
467 pfs
->pfs_type
= ripdata
->meta
.pfs_type
;
468 pfs
->pfs_subtype
= ripdata
->meta
.pfs_subtype
;
469 pfs
->pfs_clid
= ripdata
->meta
.pfs_clid
;
470 pfs
->pfs_fsid
= ripdata
->meta
.pfs_fsid
;
471 KKASSERT(ripdata
->meta
.name_len
< sizeof(pfs
->name
));
472 bcopy(ripdata
->filename
, pfs
->name
, ripdata
->meta
.name_len
);
473 pfs
->name
[ripdata
->meta
.name_len
] = 0;
474 ripdata
= NULL
; /* safety */
477 * Calculate name_next, if any. We are only accessing
478 * chain->bref so we can ignore chain->error (if the key
479 * is used later it will error then).
481 if (parent
== NULL
) {
482 pfs
->name_next
= (hammer2_key_t
)-1;
484 chain
= hammer2_chain_next(&parent
, chain
, &key_next
,
485 key_next
, HAMMER2_KEY_MAX
,
487 HAMMER2_LOOKUP_SHARED
);
489 pfs
->name_next
= chain
->bref
.key
;
491 pfs
->name_next
= (hammer2_key_t
)-1;
494 pfs
->name_next
= (hammer2_key_t
)-1;
502 hammer2_chain_unlock(chain
);
503 hammer2_chain_drop(chain
);
506 hammer2_chain_unlock(parent
);
507 hammer2_chain_drop(parent
);
509 if (save_key
== (hammer2_key_t
)-1) {
510 hammer2_inode_unlock(ip
->pmp
->iroot
);
512 hammer2_inode_unlock(hmp
->spmp
->iroot
);
519 * Find a specific PFS by name
522 hammer2_ioctl_pfs_lookup(hammer2_inode_t
*ip
, void *data
)
524 const hammer2_inode_data_t
*ripdata
;
526 hammer2_ioc_pfs_t
*pfs
;
527 hammer2_chain_t
*parent
;
528 hammer2_chain_t
*chain
;
529 hammer2_key_t key_next
;
534 hmp
= ip
->pmp
->pfs_hmps
[0];
541 hammer2_inode_lock(hmp
->spmp
->iroot
, HAMMER2_RESOLVE_SHARED
);
542 parent
= hammer2_inode_chain(hmp
->spmp
->iroot
, 0,
543 HAMMER2_RESOLVE_ALWAYS
|
544 HAMMER2_RESOLVE_SHARED
);
546 pfs
->name
[sizeof(pfs
->name
) - 1] = 0;
547 len
= strlen(pfs
->name
);
548 lhc
= hammer2_dirhash(pfs
->name
, len
);
550 chain
= hammer2_chain_lookup(&parent
, &key_next
,
551 lhc
, lhc
+ HAMMER2_DIRHASH_LOMASK
,
552 &error
, HAMMER2_LOOKUP_SHARED
);
554 if (hammer2_chain_dirent_test(chain
, pfs
->name
, len
))
556 chain
= hammer2_chain_next(&parent
, chain
, &key_next
,
558 lhc
+ HAMMER2_DIRHASH_LOMASK
,
559 &error
, HAMMER2_LOOKUP_SHARED
);
561 error
= hammer2_error_to_errno(error
);
564 * Load the data being returned by the ioctl.
566 if (chain
&& chain
->error
== 0) {
567 KKASSERT(chain
->bref
.type
== HAMMER2_BREF_TYPE_INODE
);
568 ripdata
= &chain
->data
->ipdata
;
569 pfs
->name_key
= ripdata
->meta
.name_key
;
570 pfs
->pfs_type
= ripdata
->meta
.pfs_type
;
571 pfs
->pfs_subtype
= ripdata
->meta
.pfs_subtype
;
572 pfs
->pfs_clid
= ripdata
->meta
.pfs_clid
;
573 pfs
->pfs_fsid
= ripdata
->meta
.pfs_fsid
;
576 hammer2_chain_unlock(chain
);
577 hammer2_chain_drop(chain
);
578 } else if (error
== 0) {
582 hammer2_chain_unlock(parent
);
583 hammer2_chain_drop(parent
);
585 hammer2_inode_unlock(hmp
->spmp
->iroot
);
591 * Create a new PFS under the super-root
594 hammer2_ioctl_pfs_create(hammer2_inode_t
*ip
, void *data
)
596 hammer2_inode_data_t
*nipdata
;
597 hammer2_chain_t
*nchain
;
599 hammer2_dev_t
*force_local
;
600 hammer2_ioc_pfs_t
*pfs
;
601 hammer2_inode_t
*nip
;
605 hmp
= ip
->pmp
->pfs_hmps
[0]; /* XXX */
612 if (pfs
->name
[0] == 0)
614 pfs
->name
[sizeof(pfs
->name
) - 1] = 0; /* ensure 0-termination */
616 if (hammer2_ioctl_pfs_lookup(ip
, pfs
) == 0)
619 hammer2_trans_init(hmp
->spmp
, 0);
620 mtid
= hammer2_trans_sub(hmp
->spmp
);
621 nip
= hammer2_inode_create(hmp
->spmp
->iroot
, hmp
->spmp
->iroot
,
623 pfs
->name
, strlen(pfs
->name
), 0,
624 1, HAMMER2_OBJTYPE_DIRECTORY
, 0,
625 HAMMER2_INSERT_PFSROOT
, &error
);
627 hammer2_inode_modify(nip
);
628 nchain
= hammer2_inode_chain(nip
, 0, HAMMER2_RESOLVE_ALWAYS
);
629 hammer2_chain_modify(nchain
, mtid
, 0, 0);
630 nipdata
= &nchain
->data
->ipdata
;
632 nip
->meta
.pfs_type
= pfs
->pfs_type
;
633 nip
->meta
.pfs_subtype
= pfs
->pfs_subtype
;
634 nip
->meta
.pfs_clid
= pfs
->pfs_clid
;
635 nip
->meta
.pfs_fsid
= pfs
->pfs_fsid
;
636 nip
->meta
.op_flags
|= HAMMER2_OPFLAG_PFSROOT
;
639 * Set default compression and check algorithm. This
640 * can be changed later.
642 * Do not allow compression on PFS's with the special name
643 * "boot", the boot loader can't decompress (yet).
645 nip
->meta
.comp_algo
=
646 HAMMER2_ENC_ALGO(HAMMER2_COMP_NEWFS_DEFAULT
);
647 nip
->meta
.check_algo
=
648 HAMMER2_ENC_ALGO( HAMMER2_CHECK_XXHASH64
);
650 if (strcasecmp(pfs
->name
, "boot") == 0) {
651 nip
->meta
.comp_algo
=
652 HAMMER2_ENC_ALGO(HAMMER2_COMP_AUTOZERO
);
656 * Super-root isn't mounted, fsync it
658 hammer2_chain_unlock(nchain
);
659 hammer2_inode_ref(nip
);
660 hammer2_inode_unlock(nip
);
661 hammer2_inode_chain_sync(nip
);
662 hammer2_inode_drop(nip
);
665 * We still have a ref on the chain, relock and associate
666 * with an appropriate PFS.
668 force_local
= (hmp
->hflags
& HMNT2_LOCAL
) ? hmp
: NULL
;
670 hammer2_chain_lock(nchain
, HAMMER2_RESOLVE_ALWAYS
);
671 nipdata
= &nchain
->data
->ipdata
;
672 kprintf("ADD LOCAL PFS (IOCTL): %s\n", nipdata
->filename
);
673 hammer2_pfsalloc(nchain
, nipdata
,
674 nchain
->bref
.modify_tid
, force_local
);
676 hammer2_chain_unlock(nchain
);
677 hammer2_chain_drop(nchain
);
680 hammer2_trans_done(hmp
->spmp
);
686 * Destroy an existing PFS under the super-root
689 hammer2_ioctl_pfs_delete(hammer2_inode_t
*ip
, void *data
)
691 hammer2_ioc_pfs_t
*pfs
= data
;
695 hammer2_xop_unlink_t
*xop
;
696 hammer2_inode_t
*dip
;
697 hammer2_inode_t
*iroot
;
702 * The PFS should be probed, so we should be able to
703 * locate it. We only delete the PFS from the
704 * specific H2 block device (hmp), not all of
705 * them. We must remove the PFS from the cluster
706 * before we can destroy it.
708 hmp
= ip
->pmp
->pfs_hmps
[0];
712 pfs
->name
[sizeof(pfs
->name
) - 1] = 0; /* ensure termination */
714 lockmgr(&hammer2_mntlk
, LK_EXCLUSIVE
);
716 TAILQ_FOREACH(pmp
, &hammer2_pfslist
, mntentry
) {
717 for (i
= 0; i
< HAMMER2_MAXCLUSTER
; ++i
) {
718 if (pmp
->pfs_hmps
[i
] != hmp
)
720 if (pmp
->pfs_names
[i
] &&
721 strcmp(pmp
->pfs_names
[i
], pfs
->name
) == 0) {
725 if (i
!= HAMMER2_MAXCLUSTER
)
730 lockmgr(&hammer2_mntlk
, LK_RELEASE
);
735 * Ok, we found the pmp and we have the index. Permanently remove
736 * the PFS from the cluster
739 kprintf("FOUND PFS %s CLINDEX %d\n", pfs
->name
, i
);
740 hammer2_pfsdealloc(pmp
, i
, 1);
742 lockmgr(&hammer2_mntlk
, LK_RELEASE
);
745 * Now destroy the PFS under its device using the per-device
750 hammer2_trans_init(spmp
, 0);
751 hammer2_inode_lock(dip
, 0);
753 xop
= hammer2_xop_alloc(dip
, HAMMER2_XOP_MODIFYING
);
754 hammer2_xop_setname(&xop
->head
, pfs
->name
, strlen(pfs
->name
));
756 xop
->dopermanent
= H2DOPERM_PERMANENT
| H2DOPERM_FORCE
;
757 hammer2_xop_start(&xop
->head
, hammer2_xop_unlink
);
759 error
= hammer2_xop_collect(&xop
->head
, 0);
761 hammer2_inode_unlock(dip
);
765 ip
= hammer2_inode_get(dip
->pmp
, dip
, &xop
->head
.cluster
, -1);
766 hammer2_xop_retire(&xop
->head
, HAMMER2_XOPMASK_VOP
);
768 hammer2_inode_unlink_finisher(ip
, 0);
769 hammer2_inode_unlock(ip
);
772 hammer2_xop_retire(&xop
->head
, HAMMER2_XOPMASK_VOP
);
775 hammer2_xop_retire(&xop
->head
, HAMMER2_XOPMASK_VOP
);
777 hammer2_trans_done(spmp
);
779 return (hammer2_error_to_errno(error
));
783 hammer2_ioctl_pfs_snapshot(hammer2_inode_t
*ip
, void *data
)
785 hammer2_ioc_pfs_t
*pfs
= data
;
788 hammer2_chain_t
*chain
;
792 if (pfs
->name
[0] == 0)
794 if (pfs
->name
[sizeof(pfs
->name
)-1] != 0)
800 hmp
= pmp
->pfs_hmps
[0];
804 lockmgr(&hmp
->bulklk
, LK_EXCLUSIVE
);
806 hammer2_vfs_sync(pmp
->mp
, MNT_WAIT
);
808 hammer2_trans_init(pmp
, HAMMER2_TRANS_ISFLUSH
);
809 mtid
= hammer2_trans_sub(pmp
);
810 hammer2_inode_lock(ip
, 0);
811 hammer2_inode_modify(ip
);
812 ip
->meta
.pfs_lsnap_tid
= mtid
;
814 /* XXX cluster it! */
815 chain
= hammer2_inode_chain(ip
, 0, HAMMER2_RESOLVE_ALWAYS
);
816 error
= hammer2_chain_snapshot(chain
, pfs
, mtid
);
817 hammer2_chain_unlock(chain
);
818 hammer2_chain_drop(chain
);
820 hammer2_inode_unlock(ip
);
821 hammer2_trans_done(pmp
);
823 lockmgr(&hmp
->bulklk
, LK_RELEASE
);
825 return (hammer2_error_to_errno(error
));
829 * Retrieve the raw inode structure, non-inclusive of node-specific data.
832 hammer2_ioctl_inode_get(hammer2_inode_t
*ip
, void *data
)
834 hammer2_ioc_inode_t
*ino
;
835 hammer2_chain_t
*chain
;
842 hammer2_inode_lock(ip
, HAMMER2_RESOLVE_SHARED
);
844 ino
->inode_count
= 0;
845 for (i
= 0; i
< ip
->cluster
.nchains
; ++i
) {
846 if ((chain
= ip
->cluster
.array
[i
].chain
) != NULL
) {
847 if (ino
->data_count
<
848 chain
->bref
.embed
.stats
.data_count
) {
850 chain
->bref
.embed
.stats
.data_count
;
852 if (ino
->inode_count
<
853 chain
->bref
.embed
.stats
.inode_count
) {
855 chain
->bref
.embed
.stats
.inode_count
;
859 bzero(&ino
->ip_data
, sizeof(ino
->ip_data
));
860 ino
->ip_data
.meta
= ip
->meta
;
862 hammer2_inode_unlock(ip
);
864 return hammer2_error_to_errno(error
);
868 * Set various parameters in an inode which cannot be set through
869 * normal filesystem VNOPS.
872 hammer2_ioctl_inode_set(hammer2_inode_t
*ip
, void *data
)
874 hammer2_ioc_inode_t
*ino
= data
;
877 hammer2_trans_init(ip
->pmp
, 0);
878 hammer2_inode_lock(ip
, 0);
880 if ((ino
->flags
& HAMMER2IOC_INODE_FLAG_CHECK
) &&
881 ip
->meta
.check_algo
!= ino
->ip_data
.meta
.check_algo
) {
882 hammer2_inode_modify(ip
);
883 ip
->meta
.check_algo
= ino
->ip_data
.meta
.check_algo
;
885 if ((ino
->flags
& HAMMER2IOC_INODE_FLAG_COMP
) &&
886 ip
->meta
.comp_algo
!= ino
->ip_data
.meta
.comp_algo
) {
887 hammer2_inode_modify(ip
);
888 ip
->meta
.comp_algo
= ino
->ip_data
.meta
.comp_algo
;
892 /* Ignore these flags for now...*/
893 if ((ino
->flags
& HAMMER2IOC_INODE_FLAG_IQUOTA
) &&
894 ip
->meta
.inode_quota
!= ino
->ip_data
.meta
.inode_quota
) {
895 hammer2_inode_modify(ip
);
896 ip
->meta
.inode_quota
= ino
->ip_data
.meta
.inode_quota
;
898 if ((ino
->flags
& HAMMER2IOC_INODE_FLAG_DQUOTA
) &&
899 ip
->meta
.data_quota
!= ino
->ip_data
.meta
.data_quota
) {
900 hammer2_inode_modify(ip
);
901 ip
->meta
.data_quota
= ino
->ip_data
.meta
.data_quota
;
903 if ((ino
->flags
& HAMMER2IOC_INODE_FLAG_COPIES
) &&
904 ip
->meta
.ncopies
!= ino
->ip_data
.meta
.ncopies
) {
905 hammer2_inode_modify(ip
);
906 ip
->meta
.ncopies
= ino
->ip_data
.meta
.ncopies
;
908 hammer2_inode_unlock(ip
);
909 hammer2_trans_done(ip
->pmp
);
911 return (hammer2_error_to_errno(error
));
916 hammer2_ioctl_debug_dump(hammer2_inode_t
*ip
)
918 hammer2_chain_t
*chain
;
922 for (i
= 0; i
< ip
->cluster
.nchains
; ++i
) {
923 chain
= ip
->cluster
.array
[i
].chain
;
926 hammer2_dump_chain(chain
, 0, &count
, 'i');
932 * Executes one flush/free pass per call. If trying to recover
933 * data we just freed up a moment ago it can take up to six passes
934 * to fully free the blocks. Note that passes occur automatically based
935 * on free space as the storage fills up, but manual passes may be needed
936 * if storage becomes almost completely full.
940 hammer2_ioctl_bulkfree_scan(hammer2_inode_t
*ip
, void *data
)
942 hammer2_ioc_bulkfree_t
*bfi
= data
;
945 hammer2_chain_t
*vchain
;
952 hmp
= pmp
->pfs_hmps
[0];
959 * Bulkfree has to be serialized to guarantee at least one sync
960 * inbetween bulkfrees.
962 error
= lockmgr(&hmp
->bflock
, LK_EXCLUSIVE
| LK_PCATCH
);
967 * sync the filesystem and obtain a snapshot of the synchronized
968 * hmp volume header. We treat the snapshot as an independent
971 * If ENOSPC occurs we should continue, because bulkfree is the only
972 * way to fix that. The flush will have flushed everything it could
973 * and not left any modified chains. Otherwise an error is fatal.
975 error
= hammer2_vfs_sync(pmp
->mp
, MNT_WAIT
);
976 if (error
&& error
!= ENOSPC
)
980 * If we have an ENOSPC error we have to bulkfree on the live
981 * topology. Otherwise we can bulkfree on a snapshot.
984 kprintf("hammer2: WARNING! Bulkfree forced to use live "
986 vchain
= &hmp
->vchain
;
987 hammer2_chain_ref(vchain
);
990 vchain
= hammer2_chain_bulksnap(hmp
);
995 * Bulkfree on a snapshot does not need a transaction, which allows
996 * it to run concurrently with any operation other than another
999 * If we are running bulkfree on the live topology we have to be
1000 * in a FLUSH transaction.
1003 hammer2_trans_init(pmp
, HAMMER2_TRANS_ISFLUSH
);
1006 hammer2_thr_freeze(&hmp
->bfthr
);
1007 error
= hammer2_bulkfree_pass(hmp
, vchain
, bfi
);
1008 hammer2_thr_unfreeze(&hmp
->bfthr
);
1011 hammer2_chain_bulkdrop(vchain
);
1013 hammer2_chain_drop(vchain
);
1014 hammer2_trans_done(pmp
);
1016 error
= hammer2_error_to_errno(error
);
1019 lockmgr(&hmp
->bflock
, LK_RELEASE
);
1024 * Unconditionally delete meta-data in a hammer2 filesystem
1028 hammer2_ioctl_destroy(hammer2_inode_t
*ip
, void *data
)
1030 hammer2_ioc_destroy_t
*iocd
= data
;
1031 hammer2_pfs_t
*pmp
= ip
->pmp
;
1040 case HAMMER2_DELETE_FILE
:
1042 * Destroy a bad directory entry by name. Caller must
1043 * pass the directory as fd.
1046 hammer2_xop_unlink_t
*xop
;
1048 if (iocd
->path
[sizeof(iocd
->path
)-1]) {
1052 if (ip
->meta
.type
!= HAMMER2_OBJTYPE_DIRECTORY
) {
1056 hammer2_pfs_memory_wait(pmp
);
1057 hammer2_trans_init(pmp
, 0);
1058 hammer2_inode_lock(ip
, 0);
1060 xop
= hammer2_xop_alloc(ip
, HAMMER2_XOP_MODIFYING
);
1061 hammer2_xop_setname(&xop
->head
, iocd
->path
, strlen(iocd
->path
));
1063 xop
->dopermanent
= H2DOPERM_PERMANENT
|
1066 hammer2_xop_start(&xop
->head
, hammer2_xop_unlink
);
1068 error
= hammer2_xop_collect(&xop
->head
, 0);
1069 error
= hammer2_error_to_errno(error
);
1070 hammer2_inode_unlock(ip
);
1071 hammer2_xop_retire(&xop
->head
, HAMMER2_XOPMASK_VOP
);
1072 hammer2_trans_done(pmp
);
1075 case HAMMER2_DELETE_INUM
:
1077 * Destroy a bad inode by inode number.
1080 hammer2_xop_lookup_t
*xop
;
1082 if (iocd
->inum
< 1) {
1086 hammer2_pfs_memory_wait(pmp
);
1087 hammer2_trans_init(pmp
, 0);
1089 xop
= hammer2_xop_alloc(pmp
->iroot
, 0);
1090 xop
->lhc
= iocd
->inum
;
1091 hammer2_xop_start(&xop
->head
, hammer2_xop_lookup
);
1092 error
= hammer2_xop_collect(&xop
->head
, 0);
1094 ip
= hammer2_inode_get(pmp
, NULL
,
1095 &xop
->head
.cluster
, -1);
1096 hammer2_xop_retire(&xop
->head
, HAMMER2_XOPMASK_VOP
);
1098 ip
->meta
.nlinks
= 1;
1099 hammer2_inode_unlink_finisher(ip
, 0);
1100 hammer2_inode_unlock(ip
);
1103 hammer2_xop_retire(&xop
->head
, HAMMER2_XOPMASK_VOP
);