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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
572e2857 | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
34dc7c2f BB |
23 | */ |
24 | ||
34dc7c2f BB |
25 | #include <sys/types.h> |
26 | #include <sys/param.h> | |
27 | #include <sys/systm.h> | |
28 | #include <sys/sysmacros.h> | |
29 | #include <sys/cmn_err.h> | |
30 | #include <sys/kmem.h> | |
31 | #include <sys/thread.h> | |
32 | #include <sys/file.h> | |
33 | #include <sys/fcntl.h> | |
34 | #include <sys/vfs.h> | |
35 | #include <sys/fs/zfs.h> | |
36 | #include <sys/zfs_znode.h> | |
37 | #include <sys/zfs_dir.h> | |
38 | #include <sys/zfs_acl.h> | |
39 | #include <sys/zfs_fuid.h> | |
40 | #include <sys/spa.h> | |
41 | #include <sys/zil.h> | |
42 | #include <sys/byteorder.h> | |
43 | #include <sys/stat.h> | |
44 | #include <sys/mode.h> | |
45 | #include <sys/acl.h> | |
46 | #include <sys/atomic.h> | |
47 | #include <sys/cred.h> | |
48 | ||
49 | /* | |
50 | * Functions to replay ZFS intent log (ZIL) records | |
51 | * The functions are called through a function vector (zfs_replay_vector) | |
52 | * which is indexed by the transaction type. | |
53 | */ | |
54 | ||
55 | static void | |
56 | zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode, | |
57 | uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid) | |
58 | { | |
59 | bzero(vap, sizeof (*vap)); | |
60 | vap->va_mask = (uint_t)mask; | |
61 | vap->va_type = IFTOVT(mode); | |
62 | vap->va_mode = mode & MODEMASK; | |
63 | vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid; | |
64 | vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid; | |
65 | vap->va_rdev = zfs_cmpldev(rdev); | |
66 | vap->va_nodeid = nodeid; | |
67 | } | |
68 | ||
69 | /* ARGSUSED */ | |
70 | static int | |
71 | zfs_replay_error(zfsvfs_t *zfsvfs, lr_t *lr, boolean_t byteswap) | |
72 | { | |
73 | return (ENOTSUP); | |
74 | } | |
75 | ||
76 | static void | |
77 | zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap) | |
78 | { | |
79 | xoptattr_t *xoap = NULL; | |
80 | uint64_t *attrs; | |
81 | uint64_t *crtime; | |
82 | uint32_t *bitmap; | |
83 | void *scanstamp; | |
84 | int i; | |
85 | ||
86 | xvap->xva_vattr.va_mask |= AT_XVATTR; | |
87 | if ((xoap = xva_getxoptattr(xvap)) == NULL) { | |
88 | xvap->xva_vattr.va_mask &= ~AT_XVATTR; /* shouldn't happen */ | |
89 | return; | |
90 | } | |
91 | ||
92 | ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize); | |
93 | ||
94 | bitmap = &lrattr->lr_attr_bitmap; | |
95 | for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++) | |
96 | xvap->xva_reqattrmap[i] = *bitmap; | |
97 | ||
98 | attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1); | |
99 | crtime = attrs + 1; | |
100 | scanstamp = (caddr_t)(crtime + 2); | |
101 | ||
102 | if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) | |
103 | xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0); | |
104 | if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) | |
105 | xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0); | |
106 | if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) | |
107 | xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0); | |
108 | if (XVA_ISSET_REQ(xvap, XAT_READONLY)) | |
109 | xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0); | |
110 | if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) | |
111 | xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0); | |
112 | if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) | |
113 | xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0); | |
114 | if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) | |
115 | xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0); | |
116 | if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) | |
117 | xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0); | |
118 | if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) | |
119 | xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0); | |
120 | if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) | |
121 | xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0); | |
122 | if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) | |
123 | xoap->xoa_av_quarantined = | |
124 | ((*attrs & XAT0_AV_QUARANTINED) != 0); | |
125 | if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) | |
126 | ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime); | |
127 | if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) | |
128 | bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ); | |
428870ff BB |
129 | if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) |
130 | xoap->xoa_reparse = ((*attrs & XAT0_REPARSE) != 0); | |
572e2857 BB |
131 | if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) |
132 | xoap->xoa_offline = ((*attrs & XAT0_OFFLINE) != 0); | |
133 | if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) | |
134 | xoap->xoa_sparse = ((*attrs & XAT0_SPARSE) != 0); | |
34dc7c2f BB |
135 | } |
136 | ||
137 | static int | |
138 | zfs_replay_domain_cnt(uint64_t uid, uint64_t gid) | |
139 | { | |
140 | uint64_t uid_idx; | |
141 | uint64_t gid_idx; | |
142 | int domcnt = 0; | |
143 | ||
144 | uid_idx = FUID_INDEX(uid); | |
145 | gid_idx = FUID_INDEX(gid); | |
146 | if (uid_idx) | |
147 | domcnt++; | |
148 | if (gid_idx > 0 && gid_idx != uid_idx) | |
149 | domcnt++; | |
150 | ||
151 | return (domcnt); | |
152 | } | |
153 | ||
154 | static void * | |
155 | zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start, | |
156 | int domcnt) | |
157 | { | |
158 | int i; | |
159 | ||
160 | for (i = 0; i != domcnt; i++) { | |
161 | fuid_infop->z_domain_table[i] = start; | |
162 | start = (caddr_t)start + strlen(start) + 1; | |
163 | } | |
164 | ||
165 | return (start); | |
166 | } | |
167 | ||
168 | /* | |
169 | * Set the uid/gid in the fuid_info structure. | |
170 | */ | |
171 | static void | |
172 | zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid) | |
173 | { | |
174 | /* | |
175 | * If owner or group are log specific FUIDs then slurp up | |
176 | * domain information and build zfs_fuid_info_t | |
177 | */ | |
178 | if (IS_EPHEMERAL(uid)) | |
179 | fuid_infop->z_fuid_owner = uid; | |
180 | ||
181 | if (IS_EPHEMERAL(gid)) | |
182 | fuid_infop->z_fuid_group = gid; | |
183 | } | |
184 | ||
185 | /* | |
186 | * Load fuid domains into fuid_info_t | |
187 | */ | |
188 | static zfs_fuid_info_t * | |
189 | zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid) | |
190 | { | |
191 | int domcnt; | |
192 | ||
193 | zfs_fuid_info_t *fuid_infop; | |
194 | ||
195 | fuid_infop = zfs_fuid_info_alloc(); | |
196 | ||
197 | domcnt = zfs_replay_domain_cnt(uid, gid); | |
198 | ||
199 | if (domcnt == 0) | |
200 | return (fuid_infop); | |
201 | ||
202 | fuid_infop->z_domain_table = | |
203 | kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP); | |
204 | ||
205 | zfs_replay_fuid_ugid(fuid_infop, uid, gid); | |
206 | ||
207 | fuid_infop->z_domain_cnt = domcnt; | |
208 | *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt); | |
209 | return (fuid_infop); | |
210 | } | |
211 | ||
212 | /* | |
213 | * load zfs_fuid_t's and fuid_domains into fuid_info_t | |
214 | */ | |
215 | static zfs_fuid_info_t * | |
216 | zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid, | |
217 | uint64_t gid) | |
218 | { | |
219 | uint64_t *log_fuid = (uint64_t *)start; | |
220 | zfs_fuid_info_t *fuid_infop; | |
221 | int i; | |
222 | ||
223 | fuid_infop = zfs_fuid_info_alloc(); | |
224 | fuid_infop->z_domain_cnt = domcnt; | |
225 | ||
226 | fuid_infop->z_domain_table = | |
227 | kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP); | |
228 | ||
229 | for (i = 0; i != idcnt; i++) { | |
230 | zfs_fuid_t *zfuid; | |
231 | ||
232 | zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP); | |
233 | zfuid->z_logfuid = *log_fuid; | |
234 | zfuid->z_id = -1; | |
235 | zfuid->z_domidx = 0; | |
236 | list_insert_tail(&fuid_infop->z_fuids, zfuid); | |
237 | log_fuid++; | |
238 | } | |
239 | ||
240 | zfs_replay_fuid_ugid(fuid_infop, uid, gid); | |
241 | ||
242 | *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt); | |
243 | return (fuid_infop); | |
244 | } | |
245 | ||
246 | static void | |
247 | zfs_replay_swap_attrs(lr_attr_t *lrattr) | |
248 | { | |
249 | /* swap the lr_attr structure */ | |
250 | byteswap_uint32_array(lrattr, sizeof (*lrattr)); | |
251 | /* swap the bitmap */ | |
252 | byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) * | |
253 | sizeof (uint32_t)); | |
254 | /* swap the attributes, create time + 64 bit word for attributes */ | |
255 | byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) * | |
256 | (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t)); | |
257 | } | |
258 | ||
259 | /* | |
260 | * Replay file create with optional ACL, xvattr information as well | |
261 | * as option FUID information. | |
262 | */ | |
263 | static int | |
264 | zfs_replay_create_acl(zfsvfs_t *zfsvfs, | |
265 | lr_acl_create_t *lracl, boolean_t byteswap) | |
266 | { | |
267 | char *name = NULL; /* location determined later */ | |
268 | lr_create_t *lr = (lr_create_t *)lracl; | |
269 | znode_t *dzp; | |
270 | vnode_t *vp = NULL; | |
271 | xvattr_t xva; | |
272 | int vflg = 0; | |
273 | vsecattr_t vsec = { 0 }; | |
274 | lr_attr_t *lrattr; | |
275 | void *aclstart; | |
276 | void *fuidstart; | |
277 | size_t xvatlen = 0; | |
278 | uint64_t txtype; | |
279 | int error; | |
280 | ||
428870ff | 281 | txtype = (lr->lr_common.lrc_txtype & ~TX_CI); |
34dc7c2f BB |
282 | if (byteswap) { |
283 | byteswap_uint64_array(lracl, sizeof (*lracl)); | |
34dc7c2f BB |
284 | if (txtype == TX_CREATE_ACL_ATTR || |
285 | txtype == TX_MKDIR_ACL_ATTR) { | |
286 | lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); | |
287 | zfs_replay_swap_attrs(lrattr); | |
288 | xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); | |
289 | } | |
290 | ||
291 | aclstart = (caddr_t)(lracl + 1) + xvatlen; | |
292 | zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE); | |
293 | /* swap fuids */ | |
294 | if (lracl->lr_fuidcnt) { | |
295 | byteswap_uint64_array((caddr_t)aclstart + | |
296 | ZIL_ACE_LENGTH(lracl->lr_acl_bytes), | |
297 | lracl->lr_fuidcnt * sizeof (uint64_t)); | |
298 | } | |
299 | } | |
300 | ||
301 | if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) | |
302 | return (error); | |
303 | ||
304 | xva_init(&xva); | |
305 | zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID, | |
306 | lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid); | |
307 | ||
308 | /* | |
309 | * All forms of zfs create (create, mkdir, mkxattrdir, symlink) | |
310 | * eventually end up in zfs_mknode(), which assigns the object's | |
311 | * creation time and generation number. The generic VOP_CREATE() | |
312 | * doesn't have either concept, so we smuggle the values inside | |
313 | * the vattr's otherwise unused va_ctime and va_nblocks fields. | |
314 | */ | |
315 | ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime); | |
316 | xva.xva_vattr.va_nblocks = lr->lr_gen; | |
317 | ||
318 | error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL); | |
319 | if (error != ENOENT) | |
320 | goto bail; | |
321 | ||
322 | if (lr->lr_common.lrc_txtype & TX_CI) | |
323 | vflg |= FIGNORECASE; | |
428870ff | 324 | switch (txtype) { |
34dc7c2f BB |
325 | case TX_CREATE_ACL: |
326 | aclstart = (caddr_t)(lracl + 1); | |
327 | fuidstart = (caddr_t)aclstart + | |
328 | ZIL_ACE_LENGTH(lracl->lr_acl_bytes); | |
329 | zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart, | |
330 | (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, | |
331 | lr->lr_uid, lr->lr_gid); | |
332 | /*FALLTHROUGH*/ | |
333 | case TX_CREATE_ACL_ATTR: | |
334 | if (name == NULL) { | |
335 | lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); | |
336 | xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); | |
337 | xva.xva_vattr.va_mask |= AT_XVATTR; | |
338 | zfs_replay_xvattr(lrattr, &xva); | |
339 | } | |
340 | vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS; | |
341 | vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen; | |
342 | vsec.vsa_aclcnt = lracl->lr_aclcnt; | |
343 | vsec.vsa_aclentsz = lracl->lr_acl_bytes; | |
344 | vsec.vsa_aclflags = lracl->lr_acl_flags; | |
345 | if (zfsvfs->z_fuid_replay == NULL) { | |
346 | fuidstart = (caddr_t)(lracl + 1) + xvatlen + | |
347 | ZIL_ACE_LENGTH(lracl->lr_acl_bytes); | |
348 | zfsvfs->z_fuid_replay = | |
349 | zfs_replay_fuids(fuidstart, | |
350 | (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, | |
351 | lr->lr_uid, lr->lr_gid); | |
352 | } | |
353 | ||
354 | error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr, | |
355 | 0, 0, &vp, kcred, vflg, NULL, &vsec); | |
356 | break; | |
357 | case TX_MKDIR_ACL: | |
358 | aclstart = (caddr_t)(lracl + 1); | |
359 | fuidstart = (caddr_t)aclstart + | |
360 | ZIL_ACE_LENGTH(lracl->lr_acl_bytes); | |
361 | zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart, | |
362 | (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, | |
363 | lr->lr_uid, lr->lr_gid); | |
364 | /*FALLTHROUGH*/ | |
365 | case TX_MKDIR_ACL_ATTR: | |
366 | if (name == NULL) { | |
367 | lrattr = (lr_attr_t *)(caddr_t)(lracl + 1); | |
368 | xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); | |
369 | zfs_replay_xvattr(lrattr, &xva); | |
370 | } | |
371 | vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS; | |
372 | vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen; | |
373 | vsec.vsa_aclcnt = lracl->lr_aclcnt; | |
374 | vsec.vsa_aclentsz = lracl->lr_acl_bytes; | |
375 | vsec.vsa_aclflags = lracl->lr_acl_flags; | |
376 | if (zfsvfs->z_fuid_replay == NULL) { | |
377 | fuidstart = (caddr_t)(lracl + 1) + xvatlen + | |
378 | ZIL_ACE_LENGTH(lracl->lr_acl_bytes); | |
379 | zfsvfs->z_fuid_replay = | |
380 | zfs_replay_fuids(fuidstart, | |
381 | (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt, | |
382 | lr->lr_uid, lr->lr_gid); | |
383 | } | |
384 | error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr, | |
385 | &vp, kcred, NULL, vflg, &vsec); | |
386 | break; | |
387 | default: | |
388 | error = ENOTSUP; | |
389 | } | |
390 | ||
391 | bail: | |
392 | if (error == 0 && vp != NULL) | |
393 | VN_RELE(vp); | |
394 | ||
395 | VN_RELE(ZTOV(dzp)); | |
396 | ||
428870ff BB |
397 | if (zfsvfs->z_fuid_replay) |
398 | zfs_fuid_info_free(zfsvfs->z_fuid_replay); | |
34dc7c2f BB |
399 | zfsvfs->z_fuid_replay = NULL; |
400 | ||
401 | return (error); | |
402 | } | |
403 | ||
404 | static int | |
405 | zfs_replay_create(zfsvfs_t *zfsvfs, lr_create_t *lr, boolean_t byteswap) | |
406 | { | |
407 | char *name = NULL; /* location determined later */ | |
408 | char *link; /* symlink content follows name */ | |
409 | znode_t *dzp; | |
410 | vnode_t *vp = NULL; | |
411 | xvattr_t xva; | |
412 | int vflg = 0; | |
413 | size_t lrsize = sizeof (lr_create_t); | |
414 | lr_attr_t *lrattr; | |
415 | void *start; | |
416 | size_t xvatlen; | |
417 | uint64_t txtype; | |
418 | int error; | |
419 | ||
428870ff | 420 | txtype = (lr->lr_common.lrc_txtype & ~TX_CI); |
34dc7c2f BB |
421 | if (byteswap) { |
422 | byteswap_uint64_array(lr, sizeof (*lr)); | |
34dc7c2f BB |
423 | if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR) |
424 | zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); | |
425 | } | |
426 | ||
427 | ||
428 | if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) | |
429 | return (error); | |
430 | ||
431 | xva_init(&xva); | |
432 | zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID, | |
433 | lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, lr->lr_foid); | |
434 | ||
435 | /* | |
436 | * All forms of zfs create (create, mkdir, mkxattrdir, symlink) | |
437 | * eventually end up in zfs_mknode(), which assigns the object's | |
438 | * creation time and generation number. The generic VOP_CREATE() | |
439 | * doesn't have either concept, so we smuggle the values inside | |
440 | * the vattr's otherwise unused va_ctime and va_nblocks fields. | |
441 | */ | |
442 | ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime); | |
443 | xva.xva_vattr.va_nblocks = lr->lr_gen; | |
444 | ||
445 | error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL); | |
446 | if (error != ENOENT) | |
447 | goto out; | |
448 | ||
449 | if (lr->lr_common.lrc_txtype & TX_CI) | |
450 | vflg |= FIGNORECASE; | |
451 | ||
452 | /* | |
453 | * Symlinks don't have fuid info, and CIFS never creates | |
454 | * symlinks. | |
455 | * | |
456 | * The _ATTR versions will grab the fuid info in their subcases. | |
457 | */ | |
458 | if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK && | |
459 | (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR && | |
460 | (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) { | |
461 | start = (lr + 1); | |
462 | zfsvfs->z_fuid_replay = | |
463 | zfs_replay_fuid_domain(start, &start, | |
464 | lr->lr_uid, lr->lr_gid); | |
465 | } | |
466 | ||
428870ff | 467 | switch (txtype) { |
34dc7c2f BB |
468 | case TX_CREATE_ATTR: |
469 | lrattr = (lr_attr_t *)(caddr_t)(lr + 1); | |
470 | xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); | |
471 | zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); | |
472 | start = (caddr_t)(lr + 1) + xvatlen; | |
473 | zfsvfs->z_fuid_replay = | |
474 | zfs_replay_fuid_domain(start, &start, | |
475 | lr->lr_uid, lr->lr_gid); | |
476 | name = (char *)start; | |
477 | ||
478 | /*FALLTHROUGH*/ | |
479 | case TX_CREATE: | |
480 | if (name == NULL) | |
481 | name = (char *)start; | |
482 | ||
483 | error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr, | |
484 | 0, 0, &vp, kcred, vflg, NULL, NULL); | |
485 | break; | |
486 | case TX_MKDIR_ATTR: | |
487 | lrattr = (lr_attr_t *)(caddr_t)(lr + 1); | |
488 | xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize); | |
489 | zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva); | |
490 | start = (caddr_t)(lr + 1) + xvatlen; | |
491 | zfsvfs->z_fuid_replay = | |
492 | zfs_replay_fuid_domain(start, &start, | |
493 | lr->lr_uid, lr->lr_gid); | |
494 | name = (char *)start; | |
495 | ||
496 | /*FALLTHROUGH*/ | |
497 | case TX_MKDIR: | |
498 | if (name == NULL) | |
499 | name = (char *)(lr + 1); | |
500 | ||
501 | error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr, | |
502 | &vp, kcred, NULL, vflg, NULL); | |
503 | break; | |
504 | case TX_MKXATTR: | |
34dc7c2f BB |
505 | error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred); |
506 | break; | |
507 | case TX_SYMLINK: | |
508 | name = (char *)(lr + 1); | |
509 | link = name + strlen(name) + 1; | |
510 | error = VOP_SYMLINK(ZTOV(dzp), name, &xva.xva_vattr, | |
511 | link, kcred, NULL, vflg); | |
512 | break; | |
513 | default: | |
514 | error = ENOTSUP; | |
515 | } | |
516 | ||
517 | out: | |
518 | if (error == 0 && vp != NULL) | |
519 | VN_RELE(vp); | |
520 | ||
521 | VN_RELE(ZTOV(dzp)); | |
522 | ||
523 | if (zfsvfs->z_fuid_replay) | |
524 | zfs_fuid_info_free(zfsvfs->z_fuid_replay); | |
525 | zfsvfs->z_fuid_replay = NULL; | |
526 | return (error); | |
527 | } | |
528 | ||
529 | static int | |
530 | zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap) | |
531 | { | |
532 | char *name = (char *)(lr + 1); /* name follows lr_remove_t */ | |
533 | znode_t *dzp; | |
534 | int error; | |
535 | int vflg = 0; | |
536 | ||
537 | if (byteswap) | |
538 | byteswap_uint64_array(lr, sizeof (*lr)); | |
539 | ||
540 | if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) | |
541 | return (error); | |
542 | ||
543 | if (lr->lr_common.lrc_txtype & TX_CI) | |
544 | vflg |= FIGNORECASE; | |
545 | ||
546 | switch ((int)lr->lr_common.lrc_txtype) { | |
547 | case TX_REMOVE: | |
548 | error = VOP_REMOVE(ZTOV(dzp), name, kcred, NULL, vflg); | |
549 | break; | |
550 | case TX_RMDIR: | |
551 | error = VOP_RMDIR(ZTOV(dzp), name, NULL, kcred, NULL, vflg); | |
552 | break; | |
553 | default: | |
554 | error = ENOTSUP; | |
555 | } | |
556 | ||
557 | VN_RELE(ZTOV(dzp)); | |
558 | ||
559 | return (error); | |
560 | } | |
561 | ||
562 | static int | |
563 | zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap) | |
564 | { | |
565 | char *name = (char *)(lr + 1); /* name follows lr_link_t */ | |
566 | znode_t *dzp, *zp; | |
567 | int error; | |
568 | int vflg = 0; | |
569 | ||
570 | if (byteswap) | |
571 | byteswap_uint64_array(lr, sizeof (*lr)); | |
572 | ||
573 | if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0) | |
574 | return (error); | |
575 | ||
576 | if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) { | |
577 | VN_RELE(ZTOV(dzp)); | |
578 | return (error); | |
579 | } | |
580 | ||
581 | if (lr->lr_common.lrc_txtype & TX_CI) | |
582 | vflg |= FIGNORECASE; | |
583 | ||
584 | error = VOP_LINK(ZTOV(dzp), ZTOV(zp), name, kcred, NULL, vflg); | |
585 | ||
586 | VN_RELE(ZTOV(zp)); | |
587 | VN_RELE(ZTOV(dzp)); | |
588 | ||
589 | return (error); | |
590 | } | |
591 | ||
592 | static int | |
593 | zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap) | |
594 | { | |
595 | char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */ | |
596 | char *tname = sname + strlen(sname) + 1; | |
597 | znode_t *sdzp, *tdzp; | |
598 | int error; | |
599 | int vflg = 0; | |
600 | ||
601 | if (byteswap) | |
602 | byteswap_uint64_array(lr, sizeof (*lr)); | |
603 | ||
604 | if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0) | |
605 | return (error); | |
606 | ||
607 | if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) { | |
608 | VN_RELE(ZTOV(sdzp)); | |
609 | return (error); | |
610 | } | |
611 | ||
612 | if (lr->lr_common.lrc_txtype & TX_CI) | |
613 | vflg |= FIGNORECASE; | |
614 | ||
615 | error = VOP_RENAME(ZTOV(sdzp), sname, ZTOV(tdzp), tname, kcred, | |
616 | NULL, vflg); | |
617 | ||
618 | VN_RELE(ZTOV(tdzp)); | |
619 | VN_RELE(ZTOV(sdzp)); | |
620 | ||
621 | return (error); | |
622 | } | |
623 | ||
624 | static int | |
625 | zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap) | |
626 | { | |
627 | char *data = (char *)(lr + 1); /* data follows lr_write_t */ | |
628 | znode_t *zp; | |
629 | int error; | |
630 | ssize_t resid; | |
572e2857 | 631 | uint64_t eod, offset, length; |
34dc7c2f BB |
632 | |
633 | if (byteswap) | |
634 | byteswap_uint64_array(lr, sizeof (*lr)); | |
635 | ||
636 | if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) { | |
637 | /* | |
638 | * As we can log writes out of order, it's possible the | |
639 | * file has been removed. In this case just drop the write | |
640 | * and return success. | |
641 | */ | |
642 | if (error == ENOENT) | |
643 | error = 0; | |
644 | return (error); | |
645 | } | |
646 | ||
428870ff BB |
647 | offset = lr->lr_offset; |
648 | length = lr->lr_length; | |
572e2857 | 649 | eod = offset + length; /* end of data for this write */ |
428870ff | 650 | |
572e2857 BB |
651 | /* |
652 | * This may be a write from a dmu_sync() for a whole block, | |
653 | * and may extend beyond the current end of the file. | |
654 | * We can't just replay what was written for this TX_WRITE as | |
655 | * a future TX_WRITE2 may extend the eof and the data for that | |
656 | * write needs to be there. So we write the whole block and | |
657 | * reduce the eof. This needs to be done within the single dmu | |
658 | * transaction created within vn_rdwr -> zfs_write. So a possible | |
659 | * new end of file is passed through in zfsvfs->z_replay_eof | |
660 | */ | |
661 | ||
662 | zfsvfs->z_replay_eof = 0; /* 0 means don't change end of file */ | |
428870ff BB |
663 | |
664 | /* If it's a dmu_sync() block, write the whole block */ | |
665 | if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) { | |
666 | uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr); | |
667 | if (length < blocksize) { | |
668 | offset -= offset % blocksize; | |
669 | length = blocksize; | |
670 | } | |
572e2857 BB |
671 | if (zp->z_size < eod) |
672 | zfsvfs->z_replay_eof = eod; | |
428870ff BB |
673 | } |
674 | ||
675 | error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, length, offset, | |
676 | UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid); | |
677 | ||
428870ff | 678 | VN_RELE(ZTOV(zp)); |
572e2857 | 679 | zfsvfs->z_replay_eof = 0; /* safety */ |
428870ff BB |
680 | |
681 | return (error); | |
682 | } | |
683 | ||
684 | /* | |
685 | * TX_WRITE2 are only generated when dmu_sync() returns EALREADY | |
686 | * meaning the pool block is already being synced. So now that we always write | |
687 | * out full blocks, all we have to do is expand the eof if | |
688 | * the file is grown. | |
689 | */ | |
690 | static int | |
691 | zfs_replay_write2(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap) | |
692 | { | |
693 | znode_t *zp; | |
694 | int error; | |
695 | uint64_t end; | |
696 | ||
697 | if (byteswap) | |
698 | byteswap_uint64_array(lr, sizeof (*lr)); | |
699 | ||
700 | if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) | |
701 | return (error); | |
702 | ||
572e2857 | 703 | top: |
428870ff BB |
704 | end = lr->lr_offset + lr->lr_length; |
705 | if (end > zp->z_size) { | |
572e2857 BB |
706 | dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os); |
707 | ||
428870ff | 708 | zp->z_size = end; |
572e2857 BB |
709 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); |
710 | error = dmu_tx_assign(tx, TXG_WAIT); | |
711 | if (error) { | |
712 | VN_RELE(ZTOV(zp)); | |
713 | if (error == ERESTART) { | |
714 | dmu_tx_wait(tx); | |
715 | dmu_tx_abort(tx); | |
716 | goto top; | |
717 | } | |
718 | dmu_tx_abort(tx); | |
719 | return (error); | |
720 | } | |
721 | (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs), | |
722 | (void *)&zp->z_size, sizeof (uint64_t), tx); | |
723 | ||
724 | /* Ensure the replayed seq is updated */ | |
725 | (void) zil_replaying(zfsvfs->z_log, tx); | |
726 | ||
727 | dmu_tx_commit(tx); | |
428870ff | 728 | } |
34dc7c2f BB |
729 | |
730 | VN_RELE(ZTOV(zp)); | |
731 | ||
732 | return (error); | |
733 | } | |
734 | ||
735 | static int | |
736 | zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap) | |
737 | { | |
738 | znode_t *zp; | |
739 | flock64_t fl; | |
740 | int error; | |
741 | ||
742 | if (byteswap) | |
743 | byteswap_uint64_array(lr, sizeof (*lr)); | |
744 | ||
428870ff | 745 | if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) |
34dc7c2f | 746 | return (error); |
34dc7c2f BB |
747 | |
748 | bzero(&fl, sizeof (fl)); | |
749 | fl.l_type = F_WRLCK; | |
750 | fl.l_whence = 0; | |
751 | fl.l_start = lr->lr_offset; | |
752 | fl.l_len = lr->lr_length; | |
753 | ||
754 | error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX, | |
755 | lr->lr_offset, kcred, NULL); | |
756 | ||
757 | VN_RELE(ZTOV(zp)); | |
758 | ||
759 | return (error); | |
760 | } | |
761 | ||
762 | static int | |
763 | zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap) | |
764 | { | |
765 | znode_t *zp; | |
766 | xvattr_t xva; | |
767 | vattr_t *vap = &xva.xva_vattr; | |
768 | int error; | |
769 | void *start; | |
770 | ||
771 | xva_init(&xva); | |
772 | if (byteswap) { | |
773 | byteswap_uint64_array(lr, sizeof (*lr)); | |
774 | ||
775 | if ((lr->lr_mask & AT_XVATTR) && | |
776 | zfsvfs->z_version >= ZPL_VERSION_INITIAL) | |
777 | zfs_replay_swap_attrs((lr_attr_t *)(lr + 1)); | |
778 | } | |
779 | ||
428870ff | 780 | if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) |
34dc7c2f | 781 | return (error); |
34dc7c2f BB |
782 | |
783 | zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode, | |
784 | lr->lr_uid, lr->lr_gid, 0, lr->lr_foid); | |
785 | ||
786 | vap->va_size = lr->lr_size; | |
787 | ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime); | |
788 | ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime); | |
789 | ||
790 | /* | |
791 | * Fill in xvattr_t portions if necessary. | |
792 | */ | |
793 | ||
794 | start = (lr_setattr_t *)(lr + 1); | |
795 | if (vap->va_mask & AT_XVATTR) { | |
796 | zfs_replay_xvattr((lr_attr_t *)start, &xva); | |
797 | start = (caddr_t)start + | |
798 | ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize); | |
799 | } else | |
800 | xva.xva_vattr.va_mask &= ~AT_XVATTR; | |
801 | ||
802 | zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start, | |
803 | lr->lr_uid, lr->lr_gid); | |
804 | ||
805 | error = VOP_SETATTR(ZTOV(zp), vap, 0, kcred, NULL); | |
806 | ||
807 | zfs_fuid_info_free(zfsvfs->z_fuid_replay); | |
808 | zfsvfs->z_fuid_replay = NULL; | |
809 | VN_RELE(ZTOV(zp)); | |
810 | ||
811 | return (error); | |
812 | } | |
813 | ||
814 | static int | |
815 | zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap) | |
816 | { | |
817 | ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */ | |
818 | vsecattr_t vsa; | |
819 | znode_t *zp; | |
820 | int error; | |
821 | ||
822 | if (byteswap) { | |
823 | byteswap_uint64_array(lr, sizeof (*lr)); | |
824 | zfs_oldace_byteswap(ace, lr->lr_aclcnt); | |
825 | } | |
826 | ||
428870ff | 827 | if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) |
34dc7c2f | 828 | return (error); |
34dc7c2f BB |
829 | |
830 | bzero(&vsa, sizeof (vsa)); | |
831 | vsa.vsa_mask = VSA_ACE | VSA_ACECNT; | |
832 | vsa.vsa_aclcnt = lr->lr_aclcnt; | |
b128c09f BB |
833 | vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt; |
834 | vsa.vsa_aclflags = 0; | |
34dc7c2f BB |
835 | vsa.vsa_aclentp = ace; |
836 | ||
837 | error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL); | |
838 | ||
839 | VN_RELE(ZTOV(zp)); | |
840 | ||
841 | return (error); | |
842 | } | |
843 | ||
844 | /* | |
845 | * Replaying ACLs is complicated by FUID support. | |
846 | * The log record may contain some optional data | |
847 | * to be used for replaying FUID's. These pieces | |
848 | * are the actual FUIDs that were created initially. | |
849 | * The FUID table index may no longer be valid and | |
850 | * during zfs_create() a new index may be assigned. | |
851 | * Because of this the log will contain the original | |
852 | * doman+rid in order to create a new FUID. | |
853 | * | |
854 | * The individual ACEs may contain an ephemeral uid/gid which is no | |
855 | * longer valid and will need to be replaced with an actual FUID. | |
856 | * | |
857 | */ | |
858 | static int | |
859 | zfs_replay_acl(zfsvfs_t *zfsvfs, lr_acl_t *lr, boolean_t byteswap) | |
860 | { | |
861 | ace_t *ace = (ace_t *)(lr + 1); | |
862 | vsecattr_t vsa; | |
863 | znode_t *zp; | |
864 | int error; | |
865 | ||
866 | if (byteswap) { | |
867 | byteswap_uint64_array(lr, sizeof (*lr)); | |
868 | zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE); | |
869 | if (lr->lr_fuidcnt) { | |
870 | byteswap_uint64_array((caddr_t)ace + | |
871 | ZIL_ACE_LENGTH(lr->lr_acl_bytes), | |
872 | lr->lr_fuidcnt * sizeof (uint64_t)); | |
873 | } | |
874 | } | |
875 | ||
428870ff | 876 | if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) |
34dc7c2f | 877 | return (error); |
34dc7c2f BB |
878 | |
879 | bzero(&vsa, sizeof (vsa)); | |
880 | vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS; | |
881 | vsa.vsa_aclcnt = lr->lr_aclcnt; | |
882 | vsa.vsa_aclentp = ace; | |
883 | vsa.vsa_aclentsz = lr->lr_acl_bytes; | |
884 | vsa.vsa_aclflags = lr->lr_acl_flags; | |
885 | ||
886 | if (lr->lr_fuidcnt) { | |
887 | void *fuidstart = (caddr_t)ace + | |
888 | ZIL_ACE_LENGTH(lr->lr_acl_bytes); | |
889 | ||
890 | zfsvfs->z_fuid_replay = | |
891 | zfs_replay_fuids(fuidstart, &fuidstart, | |
892 | lr->lr_fuidcnt, lr->lr_domcnt, 0, 0); | |
893 | } | |
894 | ||
895 | error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL); | |
896 | ||
897 | if (zfsvfs->z_fuid_replay) | |
898 | zfs_fuid_info_free(zfsvfs->z_fuid_replay); | |
899 | ||
900 | zfsvfs->z_fuid_replay = NULL; | |
901 | VN_RELE(ZTOV(zp)); | |
902 | ||
903 | return (error); | |
904 | } | |
905 | ||
906 | /* | |
907 | * Callback vectors for replaying records | |
908 | */ | |
909 | zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = { | |
910 | zfs_replay_error, /* 0 no such transaction type */ | |
911 | zfs_replay_create, /* TX_CREATE */ | |
912 | zfs_replay_create, /* TX_MKDIR */ | |
913 | zfs_replay_create, /* TX_MKXATTR */ | |
914 | zfs_replay_create, /* TX_SYMLINK */ | |
915 | zfs_replay_remove, /* TX_REMOVE */ | |
916 | zfs_replay_remove, /* TX_RMDIR */ | |
917 | zfs_replay_link, /* TX_LINK */ | |
918 | zfs_replay_rename, /* TX_RENAME */ | |
919 | zfs_replay_write, /* TX_WRITE */ | |
920 | zfs_replay_truncate, /* TX_TRUNCATE */ | |
921 | zfs_replay_setattr, /* TX_SETATTR */ | |
922 | zfs_replay_acl_v0, /* TX_ACL_V0 */ | |
923 | zfs_replay_acl, /* TX_ACL */ | |
924 | zfs_replay_create_acl, /* TX_CREATE_ACL */ | |
925 | zfs_replay_create, /* TX_CREATE_ATTR */ | |
926 | zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */ | |
927 | zfs_replay_create_acl, /* TX_MKDIR_ACL */ | |
928 | zfs_replay_create, /* TX_MKDIR_ATTR */ | |
929 | zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */ | |
428870ff | 930 | zfs_replay_write2, /* TX_WRITE2 */ |
34dc7c2f | 931 | }; |