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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 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
2e528b49 | 23 | * Copyright (c) 2013 by Delphix. All rights reserved. |
34dc7c2f BB |
24 | */ |
25 | ||
60101509 | 26 | |
34dc7c2f BB |
27 | #include <sys/types.h> |
28 | #include <sys/param.h> | |
29 | #include <sys/time.h> | |
30 | #include <sys/systm.h> | |
31 | #include <sys/sysmacros.h> | |
32 | #include <sys/resource.h> | |
33 | #include <sys/vfs.h> | |
34 | #include <sys/vnode.h> | |
35 | #include <sys/sid.h> | |
36 | #include <sys/file.h> | |
37 | #include <sys/stat.h> | |
38 | #include <sys/kmem.h> | |
39 | #include <sys/cmn_err.h> | |
40 | #include <sys/errno.h> | |
41 | #include <sys/unistd.h> | |
42 | #include <sys/sdt.h> | |
43 | #include <sys/fs/zfs.h> | |
44 | #include <sys/mode.h> | |
45 | #include <sys/policy.h> | |
46 | #include <sys/zfs_znode.h> | |
47 | #include <sys/zfs_fuid.h> | |
48 | #include <sys/zfs_acl.h> | |
49 | #include <sys/zfs_dir.h> | |
50 | #include <sys/zfs_vfsops.h> | |
51 | #include <sys/dmu.h> | |
52 | #include <sys/dnode.h> | |
53 | #include <sys/zap.h> | |
428870ff | 54 | #include <sys/sa.h> |
49ee64e5 | 55 | #include <sys/trace_acl.h> |
2c6abf15 | 56 | #include <sys/zpl.h> |
34dc7c2f | 57 | #include "fs/fs_subr.h" |
34dc7c2f BB |
58 | |
59 | #define ALLOW ACE_ACCESS_ALLOWED_ACE_TYPE | |
60 | #define DENY ACE_ACCESS_DENIED_ACE_TYPE | |
61 | #define MAX_ACE_TYPE ACE_SYSTEM_ALARM_CALLBACK_OBJECT_ACE_TYPE | |
b128c09f | 62 | #define MIN_ACE_TYPE ALLOW |
34dc7c2f BB |
63 | |
64 | #define OWNING_GROUP (ACE_GROUP|ACE_IDENTIFIER_GROUP) | |
65 | #define EVERYONE_ALLOW_MASK (ACE_READ_ACL|ACE_READ_ATTRIBUTES | \ | |
66 | ACE_READ_NAMED_ATTRS|ACE_SYNCHRONIZE) | |
67 | #define EVERYONE_DENY_MASK (ACE_WRITE_ACL|ACE_WRITE_OWNER | \ | |
68 | ACE_WRITE_ATTRIBUTES|ACE_WRITE_NAMED_ATTRS) | |
69 | #define OWNER_ALLOW_MASK (ACE_WRITE_ACL | ACE_WRITE_OWNER | \ | |
70 | ACE_WRITE_ATTRIBUTES|ACE_WRITE_NAMED_ATTRS) | |
34dc7c2f BB |
71 | |
72 | #define ZFS_CHECKED_MASKS (ACE_READ_ACL|ACE_READ_ATTRIBUTES|ACE_READ_DATA| \ | |
73 | ACE_READ_NAMED_ATTRS|ACE_WRITE_DATA|ACE_WRITE_ATTRIBUTES| \ | |
74 | ACE_WRITE_NAMED_ATTRS|ACE_APPEND_DATA|ACE_EXECUTE|ACE_WRITE_OWNER| \ | |
75 | ACE_WRITE_ACL|ACE_DELETE|ACE_DELETE_CHILD|ACE_SYNCHRONIZE) | |
76 | ||
9babb374 BB |
77 | #define WRITE_MASK_DATA (ACE_WRITE_DATA|ACE_APPEND_DATA|ACE_WRITE_NAMED_ATTRS) |
78 | #define WRITE_MASK_ATTRS (ACE_WRITE_ACL|ACE_WRITE_OWNER|ACE_WRITE_ATTRIBUTES| \ | |
79 | ACE_DELETE|ACE_DELETE_CHILD) | |
80 | #define WRITE_MASK (WRITE_MASK_DATA|WRITE_MASK_ATTRS) | |
34dc7c2f BB |
81 | |
82 | #define OGE_CLEAR (ACE_READ_DATA|ACE_LIST_DIRECTORY|ACE_WRITE_DATA| \ | |
83 | ACE_ADD_FILE|ACE_APPEND_DATA|ACE_ADD_SUBDIRECTORY|ACE_EXECUTE) | |
84 | ||
85 | #define OKAY_MASK_BITS (ACE_READ_DATA|ACE_LIST_DIRECTORY|ACE_WRITE_DATA| \ | |
86 | ACE_ADD_FILE|ACE_APPEND_DATA|ACE_ADD_SUBDIRECTORY|ACE_EXECUTE) | |
87 | ||
88 | #define ALL_INHERIT (ACE_FILE_INHERIT_ACE|ACE_DIRECTORY_INHERIT_ACE | \ | |
89 | ACE_NO_PROPAGATE_INHERIT_ACE|ACE_INHERIT_ONLY_ACE|ACE_INHERITED_ACE) | |
90 | ||
91 | #define RESTRICTED_CLEAR (ACE_WRITE_ACL|ACE_WRITE_OWNER) | |
92 | ||
93 | #define V4_ACL_WIDE_FLAGS (ZFS_ACL_AUTO_INHERIT|ZFS_ACL_DEFAULTED|\ | |
94 | ZFS_ACL_PROTECTED) | |
95 | ||
96 | #define ZFS_ACL_WIDE_FLAGS (V4_ACL_WIDE_FLAGS|ZFS_ACL_TRIVIAL|ZFS_INHERIT_ACE|\ | |
97 | ZFS_ACL_OBJ_ACE) | |
98 | ||
45d1cae3 BB |
99 | #define ALL_MODE_EXECS (S_IXUSR | S_IXGRP | S_IXOTH) |
100 | ||
34dc7c2f BB |
101 | static uint16_t |
102 | zfs_ace_v0_get_type(void *acep) | |
103 | { | |
104 | return (((zfs_oldace_t *)acep)->z_type); | |
105 | } | |
106 | ||
107 | static uint16_t | |
108 | zfs_ace_v0_get_flags(void *acep) | |
109 | { | |
110 | return (((zfs_oldace_t *)acep)->z_flags); | |
111 | } | |
112 | ||
113 | static uint32_t | |
114 | zfs_ace_v0_get_mask(void *acep) | |
115 | { | |
116 | return (((zfs_oldace_t *)acep)->z_access_mask); | |
117 | } | |
118 | ||
119 | static uint64_t | |
120 | zfs_ace_v0_get_who(void *acep) | |
121 | { | |
122 | return (((zfs_oldace_t *)acep)->z_fuid); | |
123 | } | |
124 | ||
125 | static void | |
126 | zfs_ace_v0_set_type(void *acep, uint16_t type) | |
127 | { | |
128 | ((zfs_oldace_t *)acep)->z_type = type; | |
129 | } | |
130 | ||
131 | static void | |
132 | zfs_ace_v0_set_flags(void *acep, uint16_t flags) | |
133 | { | |
134 | ((zfs_oldace_t *)acep)->z_flags = flags; | |
135 | } | |
136 | ||
137 | static void | |
138 | zfs_ace_v0_set_mask(void *acep, uint32_t mask) | |
139 | { | |
140 | ((zfs_oldace_t *)acep)->z_access_mask = mask; | |
141 | } | |
142 | ||
143 | static void | |
144 | zfs_ace_v0_set_who(void *acep, uint64_t who) | |
145 | { | |
146 | ((zfs_oldace_t *)acep)->z_fuid = who; | |
147 | } | |
148 | ||
149 | /*ARGSUSED*/ | |
150 | static size_t | |
151 | zfs_ace_v0_size(void *acep) | |
152 | { | |
153 | return (sizeof (zfs_oldace_t)); | |
154 | } | |
155 | ||
156 | static size_t | |
157 | zfs_ace_v0_abstract_size(void) | |
158 | { | |
159 | return (sizeof (zfs_oldace_t)); | |
160 | } | |
161 | ||
162 | static int | |
163 | zfs_ace_v0_mask_off(void) | |
164 | { | |
165 | return (offsetof(zfs_oldace_t, z_access_mask)); | |
166 | } | |
167 | ||
168 | /*ARGSUSED*/ | |
169 | static int | |
170 | zfs_ace_v0_data(void *acep, void **datap) | |
171 | { | |
172 | *datap = NULL; | |
173 | return (0); | |
174 | } | |
175 | ||
176 | static acl_ops_t zfs_acl_v0_ops = { | |
177 | zfs_ace_v0_get_mask, | |
178 | zfs_ace_v0_set_mask, | |
179 | zfs_ace_v0_get_flags, | |
180 | zfs_ace_v0_set_flags, | |
181 | zfs_ace_v0_get_type, | |
182 | zfs_ace_v0_set_type, | |
183 | zfs_ace_v0_get_who, | |
184 | zfs_ace_v0_set_who, | |
185 | zfs_ace_v0_size, | |
186 | zfs_ace_v0_abstract_size, | |
187 | zfs_ace_v0_mask_off, | |
188 | zfs_ace_v0_data | |
189 | }; | |
190 | ||
191 | static uint16_t | |
192 | zfs_ace_fuid_get_type(void *acep) | |
193 | { | |
194 | return (((zfs_ace_hdr_t *)acep)->z_type); | |
195 | } | |
196 | ||
197 | static uint16_t | |
198 | zfs_ace_fuid_get_flags(void *acep) | |
199 | { | |
200 | return (((zfs_ace_hdr_t *)acep)->z_flags); | |
201 | } | |
202 | ||
203 | static uint32_t | |
204 | zfs_ace_fuid_get_mask(void *acep) | |
205 | { | |
206 | return (((zfs_ace_hdr_t *)acep)->z_access_mask); | |
207 | } | |
208 | ||
209 | static uint64_t | |
210 | zfs_ace_fuid_get_who(void *args) | |
211 | { | |
212 | uint16_t entry_type; | |
213 | zfs_ace_t *acep = args; | |
214 | ||
215 | entry_type = acep->z_hdr.z_flags & ACE_TYPE_FLAGS; | |
216 | ||
217 | if (entry_type == ACE_OWNER || entry_type == OWNING_GROUP || | |
218 | entry_type == ACE_EVERYONE) | |
219 | return (-1); | |
220 | return (((zfs_ace_t *)acep)->z_fuid); | |
221 | } | |
222 | ||
223 | static void | |
224 | zfs_ace_fuid_set_type(void *acep, uint16_t type) | |
225 | { | |
226 | ((zfs_ace_hdr_t *)acep)->z_type = type; | |
227 | } | |
228 | ||
229 | static void | |
230 | zfs_ace_fuid_set_flags(void *acep, uint16_t flags) | |
231 | { | |
232 | ((zfs_ace_hdr_t *)acep)->z_flags = flags; | |
233 | } | |
234 | ||
235 | static void | |
236 | zfs_ace_fuid_set_mask(void *acep, uint32_t mask) | |
237 | { | |
238 | ((zfs_ace_hdr_t *)acep)->z_access_mask = mask; | |
239 | } | |
240 | ||
241 | static void | |
242 | zfs_ace_fuid_set_who(void *arg, uint64_t who) | |
243 | { | |
244 | zfs_ace_t *acep = arg; | |
245 | ||
246 | uint16_t entry_type = acep->z_hdr.z_flags & ACE_TYPE_FLAGS; | |
247 | ||
248 | if (entry_type == ACE_OWNER || entry_type == OWNING_GROUP || | |
249 | entry_type == ACE_EVERYONE) | |
250 | return; | |
251 | acep->z_fuid = who; | |
252 | } | |
253 | ||
254 | static size_t | |
255 | zfs_ace_fuid_size(void *acep) | |
256 | { | |
257 | zfs_ace_hdr_t *zacep = acep; | |
258 | uint16_t entry_type; | |
259 | ||
260 | switch (zacep->z_type) { | |
261 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
262 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
263 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
264 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
265 | return (sizeof (zfs_object_ace_t)); | |
266 | case ALLOW: | |
267 | case DENY: | |
268 | entry_type = | |
269 | (((zfs_ace_hdr_t *)acep)->z_flags & ACE_TYPE_FLAGS); | |
270 | if (entry_type == ACE_OWNER || | |
b128c09f | 271 | entry_type == OWNING_GROUP || |
34dc7c2f BB |
272 | entry_type == ACE_EVERYONE) |
273 | return (sizeof (zfs_ace_hdr_t)); | |
274 | /*FALLTHROUGH*/ | |
275 | default: | |
276 | return (sizeof (zfs_ace_t)); | |
277 | } | |
278 | } | |
279 | ||
280 | static size_t | |
281 | zfs_ace_fuid_abstract_size(void) | |
282 | { | |
283 | return (sizeof (zfs_ace_hdr_t)); | |
284 | } | |
285 | ||
286 | static int | |
287 | zfs_ace_fuid_mask_off(void) | |
288 | { | |
289 | return (offsetof(zfs_ace_hdr_t, z_access_mask)); | |
290 | } | |
291 | ||
292 | static int | |
293 | zfs_ace_fuid_data(void *acep, void **datap) | |
294 | { | |
295 | zfs_ace_t *zacep = acep; | |
296 | zfs_object_ace_t *zobjp; | |
297 | ||
298 | switch (zacep->z_hdr.z_type) { | |
299 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
300 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
301 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
302 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
303 | zobjp = acep; | |
304 | *datap = (caddr_t)zobjp + sizeof (zfs_ace_t); | |
305 | return (sizeof (zfs_object_ace_t) - sizeof (zfs_ace_t)); | |
306 | default: | |
307 | *datap = NULL; | |
308 | return (0); | |
309 | } | |
310 | } | |
311 | ||
312 | static acl_ops_t zfs_acl_fuid_ops = { | |
313 | zfs_ace_fuid_get_mask, | |
314 | zfs_ace_fuid_set_mask, | |
315 | zfs_ace_fuid_get_flags, | |
316 | zfs_ace_fuid_set_flags, | |
317 | zfs_ace_fuid_get_type, | |
318 | zfs_ace_fuid_set_type, | |
319 | zfs_ace_fuid_get_who, | |
320 | zfs_ace_fuid_set_who, | |
321 | zfs_ace_fuid_size, | |
322 | zfs_ace_fuid_abstract_size, | |
323 | zfs_ace_fuid_mask_off, | |
324 | zfs_ace_fuid_data | |
325 | }; | |
326 | ||
428870ff BB |
327 | /* |
328 | * The following three functions are provided for compatibility with | |
329 | * older ZPL version in order to determine if the file use to have | |
330 | * an external ACL and what version of ACL previously existed on the | |
331 | * file. Would really be nice to not need this, sigh. | |
332 | */ | |
428870ff BB |
333 | uint64_t |
334 | zfs_external_acl(znode_t *zp) | |
335 | { | |
336 | zfs_acl_phys_t acl_phys; | |
572e2857 | 337 | int error; |
428870ff BB |
338 | |
339 | if (zp->z_is_sa) | |
340 | return (0); | |
341 | ||
572e2857 BB |
342 | /* |
343 | * Need to deal with a potential | |
344 | * race where zfs_sa_upgrade could cause | |
345 | * z_isa_sa to change. | |
346 | * | |
347 | * If the lookup fails then the state of z_is_sa should have | |
348 | * changed. | |
349 | */ | |
428870ff | 350 | |
3558fd73 | 351 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_ZNODE_ACL(ZTOZSB(zp)), |
572e2857 BB |
352 | &acl_phys, sizeof (acl_phys))) == 0) |
353 | return (acl_phys.z_acl_extern_obj); | |
354 | else { | |
355 | /* | |
356 | * after upgrade the SA_ZPL_ZNODE_ACL should have been | |
357 | * removed | |
358 | */ | |
359 | VERIFY(zp->z_is_sa && error == ENOENT); | |
360 | return (0); | |
361 | } | |
428870ff BB |
362 | } |
363 | ||
364 | /* | |
365 | * Determine size of ACL in bytes | |
366 | * | |
367 | * This is more complicated than it should be since we have to deal | |
368 | * with old external ACLs. | |
369 | */ | |
370 | static int | |
371 | zfs_acl_znode_info(znode_t *zp, int *aclsize, int *aclcount, | |
372 | zfs_acl_phys_t *aclphys) | |
373 | { | |
0037b49e | 374 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
428870ff BB |
375 | uint64_t acl_count; |
376 | int size; | |
377 | int error; | |
378 | ||
572e2857 | 379 | ASSERT(MUTEX_HELD(&zp->z_acl_lock)); |
428870ff | 380 | if (zp->z_is_sa) { |
0037b49e | 381 | if ((error = sa_size(zp->z_sa_hdl, SA_ZPL_DACL_ACES(zfsvfs), |
428870ff BB |
382 | &size)) != 0) |
383 | return (error); | |
384 | *aclsize = size; | |
0037b49e | 385 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_DACL_COUNT(zfsvfs), |
428870ff BB |
386 | &acl_count, sizeof (acl_count))) != 0) |
387 | return (error); | |
388 | *aclcount = acl_count; | |
389 | } else { | |
0037b49e | 390 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_ZNODE_ACL(zfsvfs), |
428870ff BB |
391 | aclphys, sizeof (*aclphys))) != 0) |
392 | return (error); | |
393 | ||
394 | if (aclphys->z_acl_version == ZFS_ACL_VERSION_INITIAL) { | |
395 | *aclsize = ZFS_ACL_SIZE(aclphys->z_acl_size); | |
396 | *aclcount = aclphys->z_acl_size; | |
397 | } else { | |
398 | *aclsize = aclphys->z_acl_size; | |
399 | *aclcount = aclphys->z_acl_count; | |
400 | } | |
401 | } | |
402 | return (0); | |
403 | } | |
404 | ||
405 | int | |
406 | zfs_znode_acl_version(znode_t *zp) | |
407 | { | |
408 | zfs_acl_phys_t acl_phys; | |
409 | ||
572e2857 | 410 | if (zp->z_is_sa) |
428870ff | 411 | return (ZFS_ACL_VERSION_FUID); |
572e2857 BB |
412 | else { |
413 | int error; | |
414 | ||
415 | /* | |
416 | * Need to deal with a potential | |
417 | * race where zfs_sa_upgrade could cause | |
418 | * z_isa_sa to change. | |
419 | * | |
420 | * If the lookup fails then the state of z_is_sa should have | |
421 | * changed. | |
422 | */ | |
423 | if ((error = sa_lookup(zp->z_sa_hdl, | |
3558fd73 | 424 | SA_ZPL_ZNODE_ACL(ZTOZSB(zp)), |
572e2857 BB |
425 | &acl_phys, sizeof (acl_phys))) == 0) |
426 | return (acl_phys.z_acl_version); | |
427 | else { | |
428 | /* | |
429 | * After upgrade SA_ZPL_ZNODE_ACL should have | |
430 | * been removed. | |
431 | */ | |
432 | VERIFY(zp->z_is_sa && error == ENOENT); | |
433 | return (ZFS_ACL_VERSION_FUID); | |
434 | } | |
428870ff BB |
435 | } |
436 | } | |
437 | ||
34dc7c2f BB |
438 | static int |
439 | zfs_acl_version(int version) | |
440 | { | |
441 | if (version < ZPL_VERSION_FUID) | |
442 | return (ZFS_ACL_VERSION_INITIAL); | |
443 | else | |
444 | return (ZFS_ACL_VERSION_FUID); | |
445 | } | |
446 | ||
447 | static int | |
448 | zfs_acl_version_zp(znode_t *zp) | |
449 | { | |
3558fd73 | 450 | return (zfs_acl_version(ZTOZSB(zp)->z_version)); |
34dc7c2f BB |
451 | } |
452 | ||
428870ff | 453 | zfs_acl_t * |
34dc7c2f BB |
454 | zfs_acl_alloc(int vers) |
455 | { | |
456 | zfs_acl_t *aclp; | |
457 | ||
79c76d5b | 458 | aclp = kmem_zalloc(sizeof (zfs_acl_t), KM_SLEEP); |
34dc7c2f BB |
459 | list_create(&aclp->z_acl, sizeof (zfs_acl_node_t), |
460 | offsetof(zfs_acl_node_t, z_next)); | |
461 | aclp->z_version = vers; | |
462 | if (vers == ZFS_ACL_VERSION_FUID) | |
0a6b03d3 | 463 | aclp->z_ops = &zfs_acl_fuid_ops; |
34dc7c2f | 464 | else |
0a6b03d3 | 465 | aclp->z_ops = &zfs_acl_v0_ops; |
34dc7c2f BB |
466 | return (aclp); |
467 | } | |
468 | ||
428870ff | 469 | zfs_acl_node_t * |
34dc7c2f BB |
470 | zfs_acl_node_alloc(size_t bytes) |
471 | { | |
472 | zfs_acl_node_t *aclnode; | |
473 | ||
79c76d5b | 474 | aclnode = kmem_zalloc(sizeof (zfs_acl_node_t), KM_SLEEP); |
34dc7c2f | 475 | if (bytes) { |
79c76d5b | 476 | aclnode->z_acldata = kmem_alloc(bytes, KM_SLEEP); |
34dc7c2f BB |
477 | aclnode->z_allocdata = aclnode->z_acldata; |
478 | aclnode->z_allocsize = bytes; | |
479 | aclnode->z_size = bytes; | |
480 | } | |
481 | ||
482 | return (aclnode); | |
483 | } | |
484 | ||
485 | static void | |
486 | zfs_acl_node_free(zfs_acl_node_t *aclnode) | |
487 | { | |
488 | if (aclnode->z_allocsize) | |
489 | kmem_free(aclnode->z_allocdata, aclnode->z_allocsize); | |
490 | kmem_free(aclnode, sizeof (zfs_acl_node_t)); | |
491 | } | |
492 | ||
493 | static void | |
494 | zfs_acl_release_nodes(zfs_acl_t *aclp) | |
495 | { | |
496 | zfs_acl_node_t *aclnode; | |
497 | ||
149e873a | 498 | while ((aclnode = list_head(&aclp->z_acl))) { |
34dc7c2f BB |
499 | list_remove(&aclp->z_acl, aclnode); |
500 | zfs_acl_node_free(aclnode); | |
501 | } | |
502 | aclp->z_acl_count = 0; | |
503 | aclp->z_acl_bytes = 0; | |
504 | } | |
505 | ||
506 | void | |
507 | zfs_acl_free(zfs_acl_t *aclp) | |
508 | { | |
509 | zfs_acl_release_nodes(aclp); | |
510 | list_destroy(&aclp->z_acl); | |
511 | kmem_free(aclp, sizeof (zfs_acl_t)); | |
512 | } | |
513 | ||
514 | static boolean_t | |
b128c09f | 515 | zfs_acl_valid_ace_type(uint_t type, uint_t flags) |
34dc7c2f | 516 | { |
b128c09f | 517 | uint16_t entry_type; |
34dc7c2f | 518 | |
b128c09f BB |
519 | switch (type) { |
520 | case ALLOW: | |
521 | case DENY: | |
522 | case ACE_SYSTEM_AUDIT_ACE_TYPE: | |
523 | case ACE_SYSTEM_ALARM_ACE_TYPE: | |
524 | entry_type = flags & ACE_TYPE_FLAGS; | |
525 | return (entry_type == ACE_OWNER || | |
526 | entry_type == OWNING_GROUP || | |
527 | entry_type == ACE_EVERYONE || entry_type == 0 || | |
528 | entry_type == ACE_IDENTIFIER_GROUP); | |
34dc7c2f | 529 | default: |
b128c09f BB |
530 | if (type >= MIN_ACE_TYPE && type <= MAX_ACE_TYPE) |
531 | return (B_TRUE); | |
34dc7c2f | 532 | } |
b128c09f BB |
533 | return (B_FALSE); |
534 | } | |
34dc7c2f | 535 | |
b128c09f | 536 | static boolean_t |
3558fd73 | 537 | zfs_ace_valid(umode_t obj_mode, zfs_acl_t *aclp, uint16_t type, uint16_t iflags) |
b128c09f | 538 | { |
34dc7c2f | 539 | /* |
b128c09f | 540 | * first check type of entry |
34dc7c2f BB |
541 | */ |
542 | ||
b128c09f | 543 | if (!zfs_acl_valid_ace_type(type, iflags)) |
34dc7c2f | 544 | return (B_FALSE); |
34dc7c2f BB |
545 | |
546 | switch (type) { | |
547 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
548 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
549 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
550 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
551 | if (aclp->z_version < ZFS_ACL_VERSION_FUID) | |
552 | return (B_FALSE); | |
553 | aclp->z_hints |= ZFS_ACL_OBJ_ACE; | |
554 | } | |
555 | ||
556 | /* | |
b128c09f | 557 | * next check inheritance level flags |
34dc7c2f | 558 | */ |
34dc7c2f | 559 | |
3558fd73 | 560 | if (S_ISDIR(obj_mode) && |
b128c09f | 561 | (iflags & (ACE_FILE_INHERIT_ACE|ACE_DIRECTORY_INHERIT_ACE))) |
34dc7c2f BB |
562 | aclp->z_hints |= ZFS_INHERIT_ACE; |
563 | ||
564 | if (iflags & (ACE_INHERIT_ONLY_ACE|ACE_NO_PROPAGATE_INHERIT_ACE)) { | |
565 | if ((iflags & (ACE_FILE_INHERIT_ACE| | |
566 | ACE_DIRECTORY_INHERIT_ACE)) == 0) { | |
567 | return (B_FALSE); | |
568 | } | |
569 | } | |
570 | ||
571 | return (B_TRUE); | |
572 | } | |
573 | ||
574 | static void * | |
575 | zfs_acl_next_ace(zfs_acl_t *aclp, void *start, uint64_t *who, | |
576 | uint32_t *access_mask, uint16_t *iflags, uint16_t *type) | |
577 | { | |
578 | zfs_acl_node_t *aclnode; | |
579 | ||
428870ff BB |
580 | ASSERT(aclp); |
581 | ||
34dc7c2f BB |
582 | if (start == NULL) { |
583 | aclnode = list_head(&aclp->z_acl); | |
584 | if (aclnode == NULL) | |
585 | return (NULL); | |
586 | ||
587 | aclp->z_next_ace = aclnode->z_acldata; | |
588 | aclp->z_curr_node = aclnode; | |
589 | aclnode->z_ace_idx = 0; | |
590 | } | |
591 | ||
592 | aclnode = aclp->z_curr_node; | |
593 | ||
594 | if (aclnode == NULL) | |
595 | return (NULL); | |
596 | ||
597 | if (aclnode->z_ace_idx >= aclnode->z_ace_count) { | |
598 | aclnode = list_next(&aclp->z_acl, aclnode); | |
599 | if (aclnode == NULL) | |
600 | return (NULL); | |
601 | else { | |
602 | aclp->z_curr_node = aclnode; | |
603 | aclnode->z_ace_idx = 0; | |
604 | aclp->z_next_ace = aclnode->z_acldata; | |
605 | } | |
606 | } | |
607 | ||
608 | if (aclnode->z_ace_idx < aclnode->z_ace_count) { | |
609 | void *acep = aclp->z_next_ace; | |
b128c09f BB |
610 | size_t ace_size; |
611 | ||
612 | /* | |
613 | * Make sure we don't overstep our bounds | |
614 | */ | |
0a6b03d3 | 615 | ace_size = aclp->z_ops->ace_size(acep); |
b128c09f BB |
616 | |
617 | if (((caddr_t)acep + ace_size) > | |
618 | ((caddr_t)aclnode->z_acldata + aclnode->z_size)) { | |
619 | return (NULL); | |
620 | } | |
621 | ||
0a6b03d3 RY |
622 | *iflags = aclp->z_ops->ace_flags_get(acep); |
623 | *type = aclp->z_ops->ace_type_get(acep); | |
624 | *access_mask = aclp->z_ops->ace_mask_get(acep); | |
625 | *who = aclp->z_ops->ace_who_get(acep); | |
b128c09f | 626 | aclp->z_next_ace = (caddr_t)aclp->z_next_ace + ace_size; |
34dc7c2f | 627 | aclnode->z_ace_idx++; |
428870ff | 628 | |
34dc7c2f BB |
629 | return ((void *)acep); |
630 | } | |
631 | return (NULL); | |
632 | } | |
633 | ||
634 | /*ARGSUSED*/ | |
635 | static uint64_t | |
636 | zfs_ace_walk(void *datap, uint64_t cookie, int aclcnt, | |
637 | uint16_t *flags, uint16_t *type, uint32_t *mask) | |
638 | { | |
639 | zfs_acl_t *aclp = datap; | |
640 | zfs_ace_hdr_t *acep = (zfs_ace_hdr_t *)(uintptr_t)cookie; | |
641 | uint64_t who; | |
642 | ||
643 | acep = zfs_acl_next_ace(aclp, acep, &who, mask, | |
644 | flags, type); | |
645 | return ((uint64_t)(uintptr_t)acep); | |
646 | } | |
647 | ||
34dc7c2f BB |
648 | /* |
649 | * Copy ACE to internal ZFS format. | |
650 | * While processing the ACL each ACE will be validated for correctness. | |
651 | * ACE FUIDs will be created later. | |
652 | */ | |
653 | int | |
0037b49e | 654 | zfs_copy_ace_2_fuid(zfsvfs_t *zfsvfs, umode_t obj_mode, zfs_acl_t *aclp, |
428870ff | 655 | void *datap, zfs_ace_t *z_acl, uint64_t aclcnt, size_t *size, |
9babb374 | 656 | zfs_fuid_info_t **fuidp, cred_t *cr) |
34dc7c2f BB |
657 | { |
658 | int i; | |
659 | uint16_t entry_type; | |
660 | zfs_ace_t *aceptr = z_acl; | |
661 | ace_t *acep = datap; | |
662 | zfs_object_ace_t *zobjacep; | |
663 | ace_object_t *aceobjp; | |
664 | ||
665 | for (i = 0; i != aclcnt; i++) { | |
666 | aceptr->z_hdr.z_access_mask = acep->a_access_mask; | |
667 | aceptr->z_hdr.z_flags = acep->a_flags; | |
668 | aceptr->z_hdr.z_type = acep->a_type; | |
669 | entry_type = aceptr->z_hdr.z_flags & ACE_TYPE_FLAGS; | |
670 | if (entry_type != ACE_OWNER && entry_type != OWNING_GROUP && | |
671 | entry_type != ACE_EVERYONE) { | |
0037b49e | 672 | aceptr->z_fuid = zfs_fuid_create(zfsvfs, acep->a_who, |
9babb374 BB |
673 | cr, (entry_type == 0) ? |
674 | ZFS_ACE_USER : ZFS_ACE_GROUP, fuidp); | |
34dc7c2f BB |
675 | } |
676 | ||
677 | /* | |
678 | * Make sure ACE is valid | |
679 | */ | |
3558fd73 | 680 | if (zfs_ace_valid(obj_mode, aclp, aceptr->z_hdr.z_type, |
34dc7c2f | 681 | aceptr->z_hdr.z_flags) != B_TRUE) |
2e528b49 | 682 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
683 | |
684 | switch (acep->a_type) { | |
685 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
686 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
687 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
688 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
689 | zobjacep = (zfs_object_ace_t *)aceptr; | |
690 | aceobjp = (ace_object_t *)acep; | |
691 | ||
692 | bcopy(aceobjp->a_obj_type, zobjacep->z_object_type, | |
693 | sizeof (aceobjp->a_obj_type)); | |
694 | bcopy(aceobjp->a_inherit_obj_type, | |
695 | zobjacep->z_inherit_type, | |
696 | sizeof (aceobjp->a_inherit_obj_type)); | |
697 | acep = (ace_t *)((caddr_t)acep + sizeof (ace_object_t)); | |
698 | break; | |
699 | default: | |
700 | acep = (ace_t *)((caddr_t)acep + sizeof (ace_t)); | |
701 | } | |
702 | ||
703 | aceptr = (zfs_ace_t *)((caddr_t)aceptr + | |
0a6b03d3 | 704 | aclp->z_ops->ace_size(aceptr)); |
34dc7c2f BB |
705 | } |
706 | ||
707 | *size = (caddr_t)aceptr - (caddr_t)z_acl; | |
708 | ||
709 | return (0); | |
710 | } | |
711 | ||
712 | /* | |
713 | * Copy ZFS ACEs to fixed size ace_t layout | |
714 | */ | |
715 | static void | |
0037b49e | 716 | zfs_copy_fuid_2_ace(zfsvfs_t *zfsvfs, zfs_acl_t *aclp, cred_t *cr, |
34dc7c2f BB |
717 | void *datap, int filter) |
718 | { | |
719 | uint64_t who; | |
720 | uint32_t access_mask; | |
721 | uint16_t iflags, type; | |
722 | zfs_ace_hdr_t *zacep = NULL; | |
723 | ace_t *acep = datap; | |
724 | ace_object_t *objacep; | |
725 | zfs_object_ace_t *zobjacep; | |
726 | size_t ace_size; | |
727 | uint16_t entry_type; | |
728 | ||
149e873a BB |
729 | while ((zacep = zfs_acl_next_ace(aclp, zacep, |
730 | &who, &access_mask, &iflags, &type))) { | |
34dc7c2f BB |
731 | |
732 | switch (type) { | |
733 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
734 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
735 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
736 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
737 | if (filter) { | |
738 | continue; | |
739 | } | |
740 | zobjacep = (zfs_object_ace_t *)zacep; | |
741 | objacep = (ace_object_t *)acep; | |
742 | bcopy(zobjacep->z_object_type, | |
743 | objacep->a_obj_type, | |
744 | sizeof (zobjacep->z_object_type)); | |
745 | bcopy(zobjacep->z_inherit_type, | |
746 | objacep->a_inherit_obj_type, | |
747 | sizeof (zobjacep->z_inherit_type)); | |
748 | ace_size = sizeof (ace_object_t); | |
749 | break; | |
750 | default: | |
751 | ace_size = sizeof (ace_t); | |
752 | break; | |
753 | } | |
754 | ||
755 | entry_type = (iflags & ACE_TYPE_FLAGS); | |
756 | if ((entry_type != ACE_OWNER && | |
b128c09f | 757 | entry_type != OWNING_GROUP && |
34dc7c2f | 758 | entry_type != ACE_EVERYONE)) { |
0037b49e | 759 | acep->a_who = zfs_fuid_map_id(zfsvfs, who, |
34dc7c2f BB |
760 | cr, (entry_type & ACE_IDENTIFIER_GROUP) ? |
761 | ZFS_ACE_GROUP : ZFS_ACE_USER); | |
762 | } else { | |
763 | acep->a_who = (uid_t)(int64_t)who; | |
764 | } | |
765 | acep->a_access_mask = access_mask; | |
766 | acep->a_flags = iflags; | |
767 | acep->a_type = type; | |
768 | acep = (ace_t *)((caddr_t)acep + ace_size); | |
769 | } | |
770 | } | |
771 | ||
772 | static int | |
3558fd73 | 773 | zfs_copy_ace_2_oldace(umode_t obj_mode, zfs_acl_t *aclp, ace_t *acep, |
34dc7c2f BB |
774 | zfs_oldace_t *z_acl, int aclcnt, size_t *size) |
775 | { | |
776 | int i; | |
777 | zfs_oldace_t *aceptr = z_acl; | |
778 | ||
779 | for (i = 0; i != aclcnt; i++, aceptr++) { | |
780 | aceptr->z_access_mask = acep[i].a_access_mask; | |
781 | aceptr->z_type = acep[i].a_type; | |
782 | aceptr->z_flags = acep[i].a_flags; | |
783 | aceptr->z_fuid = acep[i].a_who; | |
784 | /* | |
785 | * Make sure ACE is valid | |
786 | */ | |
3558fd73 | 787 | if (zfs_ace_valid(obj_mode, aclp, aceptr->z_type, |
34dc7c2f | 788 | aceptr->z_flags) != B_TRUE) |
2e528b49 | 789 | return (SET_ERROR(EINVAL)); |
34dc7c2f BB |
790 | } |
791 | *size = (caddr_t)aceptr - (caddr_t)z_acl; | |
792 | return (0); | |
793 | } | |
794 | ||
795 | /* | |
796 | * convert old ACL format to new | |
797 | */ | |
798 | void | |
9babb374 | 799 | zfs_acl_xform(znode_t *zp, zfs_acl_t *aclp, cred_t *cr) |
34dc7c2f BB |
800 | { |
801 | zfs_oldace_t *oldaclp; | |
802 | int i; | |
803 | uint16_t type, iflags; | |
804 | uint32_t access_mask; | |
805 | uint64_t who; | |
806 | void *cookie = NULL; | |
807 | zfs_acl_node_t *newaclnode; | |
808 | ||
809 | ASSERT(aclp->z_version == ZFS_ACL_VERSION_INITIAL); | |
810 | /* | |
811 | * First create the ACE in a contiguous piece of memory | |
812 | * for zfs_copy_ace_2_fuid(). | |
813 | * | |
814 | * We only convert an ACL once, so this won't happen | |
815 | * everytime. | |
816 | */ | |
817 | oldaclp = kmem_alloc(sizeof (zfs_oldace_t) * aclp->z_acl_count, | |
818 | KM_SLEEP); | |
819 | i = 0; | |
149e873a BB |
820 | while ((cookie = zfs_acl_next_ace(aclp, cookie, &who, |
821 | &access_mask, &iflags, &type))) { | |
34dc7c2f BB |
822 | oldaclp[i].z_flags = iflags; |
823 | oldaclp[i].z_type = type; | |
824 | oldaclp[i].z_fuid = who; | |
825 | oldaclp[i++].z_access_mask = access_mask; | |
826 | } | |
827 | ||
828 | newaclnode = zfs_acl_node_alloc(aclp->z_acl_count * | |
829 | sizeof (zfs_object_ace_t)); | |
0a6b03d3 | 830 | aclp->z_ops = &zfs_acl_fuid_ops; |
3558fd73 BB |
831 | VERIFY(zfs_copy_ace_2_fuid(ZTOZSB(zp), ZTOI(zp)->i_mode, |
832 | aclp, oldaclp, newaclnode->z_acldata, aclp->z_acl_count, | |
9babb374 | 833 | &newaclnode->z_size, NULL, cr) == 0); |
34dc7c2f BB |
834 | newaclnode->z_ace_count = aclp->z_acl_count; |
835 | aclp->z_version = ZFS_ACL_VERSION; | |
836 | kmem_free(oldaclp, aclp->z_acl_count * sizeof (zfs_oldace_t)); | |
837 | ||
838 | /* | |
839 | * Release all previous ACL nodes | |
840 | */ | |
841 | ||
842 | zfs_acl_release_nodes(aclp); | |
843 | ||
844 | list_insert_head(&aclp->z_acl, newaclnode); | |
845 | ||
846 | aclp->z_acl_bytes = newaclnode->z_size; | |
847 | aclp->z_acl_count = newaclnode->z_ace_count; | |
848 | ||
849 | } | |
850 | ||
851 | /* | |
852 | * Convert unix access mask to v4 access mask | |
853 | */ | |
854 | static uint32_t | |
855 | zfs_unix_to_v4(uint32_t access_mask) | |
856 | { | |
857 | uint32_t new_mask = 0; | |
858 | ||
859 | if (access_mask & S_IXOTH) | |
860 | new_mask |= ACE_EXECUTE; | |
861 | if (access_mask & S_IWOTH) | |
862 | new_mask |= ACE_WRITE_DATA; | |
863 | if (access_mask & S_IROTH) | |
864 | new_mask |= ACE_READ_DATA; | |
865 | return (new_mask); | |
866 | } | |
867 | ||
868 | static void | |
869 | zfs_set_ace(zfs_acl_t *aclp, void *acep, uint32_t access_mask, | |
870 | uint16_t access_type, uint64_t fuid, uint16_t entry_type) | |
871 | { | |
872 | uint16_t type = entry_type & ACE_TYPE_FLAGS; | |
873 | ||
0a6b03d3 RY |
874 | aclp->z_ops->ace_mask_set(acep, access_mask); |
875 | aclp->z_ops->ace_type_set(acep, access_type); | |
876 | aclp->z_ops->ace_flags_set(acep, entry_type); | |
b128c09f | 877 | if ((type != ACE_OWNER && type != OWNING_GROUP && |
34dc7c2f | 878 | type != ACE_EVERYONE)) |
0a6b03d3 | 879 | aclp->z_ops->ace_who_set(acep, fuid); |
34dc7c2f BB |
880 | } |
881 | ||
882 | /* | |
883 | * Determine mode of file based on ACL. | |
884 | * Also, create FUIDs for any User/Group ACEs | |
885 | */ | |
428870ff BB |
886 | uint64_t |
887 | zfs_mode_compute(uint64_t fmode, zfs_acl_t *aclp, | |
888 | uint64_t *pflags, uint64_t fuid, uint64_t fgid) | |
34dc7c2f BB |
889 | { |
890 | int entry_type; | |
891 | mode_t mode; | |
892 | mode_t seen = 0; | |
893 | zfs_ace_hdr_t *acep = NULL; | |
894 | uint64_t who; | |
895 | uint16_t iflags, type; | |
896 | uint32_t access_mask; | |
45d1cae3 | 897 | boolean_t an_exec_denied = B_FALSE; |
34dc7c2f | 898 | |
428870ff | 899 | mode = (fmode & (S_IFMT | S_ISUID | S_ISGID | S_ISVTX)); |
34dc7c2f | 900 | |
149e873a BB |
901 | while ((acep = zfs_acl_next_ace(aclp, acep, &who, |
902 | &access_mask, &iflags, &type))) { | |
34dc7c2f | 903 | |
b128c09f | 904 | if (!zfs_acl_valid_ace_type(type, iflags)) |
34dc7c2f BB |
905 | continue; |
906 | ||
907 | entry_type = (iflags & ACE_TYPE_FLAGS); | |
908 | ||
b128c09f BB |
909 | /* |
910 | * Skip over owner@, group@ or everyone@ inherit only ACEs | |
911 | */ | |
912 | if ((iflags & ACE_INHERIT_ONLY_ACE) && | |
913 | (entry_type == ACE_OWNER || entry_type == ACE_EVERYONE || | |
914 | entry_type == OWNING_GROUP)) | |
915 | continue; | |
916 | ||
428870ff BB |
917 | if (entry_type == ACE_OWNER || (entry_type == 0 && |
918 | who == fuid)) { | |
34dc7c2f BB |
919 | if ((access_mask & ACE_READ_DATA) && |
920 | (!(seen & S_IRUSR))) { | |
921 | seen |= S_IRUSR; | |
922 | if (type == ALLOW) { | |
923 | mode |= S_IRUSR; | |
924 | } | |
925 | } | |
926 | if ((access_mask & ACE_WRITE_DATA) && | |
927 | (!(seen & S_IWUSR))) { | |
928 | seen |= S_IWUSR; | |
929 | if (type == ALLOW) { | |
930 | mode |= S_IWUSR; | |
931 | } | |
932 | } | |
933 | if ((access_mask & ACE_EXECUTE) && | |
934 | (!(seen & S_IXUSR))) { | |
935 | seen |= S_IXUSR; | |
936 | if (type == ALLOW) { | |
937 | mode |= S_IXUSR; | |
938 | } | |
939 | } | |
428870ff BB |
940 | } else if (entry_type == OWNING_GROUP || |
941 | (entry_type == ACE_IDENTIFIER_GROUP && who == fgid)) { | |
34dc7c2f BB |
942 | if ((access_mask & ACE_READ_DATA) && |
943 | (!(seen & S_IRGRP))) { | |
944 | seen |= S_IRGRP; | |
945 | if (type == ALLOW) { | |
946 | mode |= S_IRGRP; | |
947 | } | |
948 | } | |
949 | if ((access_mask & ACE_WRITE_DATA) && | |
950 | (!(seen & S_IWGRP))) { | |
951 | seen |= S_IWGRP; | |
952 | if (type == ALLOW) { | |
953 | mode |= S_IWGRP; | |
954 | } | |
955 | } | |
956 | if ((access_mask & ACE_EXECUTE) && | |
957 | (!(seen & S_IXGRP))) { | |
958 | seen |= S_IXGRP; | |
959 | if (type == ALLOW) { | |
960 | mode |= S_IXGRP; | |
961 | } | |
962 | } | |
963 | } else if (entry_type == ACE_EVERYONE) { | |
964 | if ((access_mask & ACE_READ_DATA)) { | |
965 | if (!(seen & S_IRUSR)) { | |
966 | seen |= S_IRUSR; | |
967 | if (type == ALLOW) { | |
968 | mode |= S_IRUSR; | |
969 | } | |
970 | } | |
971 | if (!(seen & S_IRGRP)) { | |
972 | seen |= S_IRGRP; | |
973 | if (type == ALLOW) { | |
974 | mode |= S_IRGRP; | |
975 | } | |
976 | } | |
977 | if (!(seen & S_IROTH)) { | |
978 | seen |= S_IROTH; | |
979 | if (type == ALLOW) { | |
980 | mode |= S_IROTH; | |
981 | } | |
982 | } | |
983 | } | |
984 | if ((access_mask & ACE_WRITE_DATA)) { | |
985 | if (!(seen & S_IWUSR)) { | |
986 | seen |= S_IWUSR; | |
987 | if (type == ALLOW) { | |
988 | mode |= S_IWUSR; | |
989 | } | |
990 | } | |
991 | if (!(seen & S_IWGRP)) { | |
992 | seen |= S_IWGRP; | |
993 | if (type == ALLOW) { | |
994 | mode |= S_IWGRP; | |
995 | } | |
996 | } | |
997 | if (!(seen & S_IWOTH)) { | |
998 | seen |= S_IWOTH; | |
999 | if (type == ALLOW) { | |
1000 | mode |= S_IWOTH; | |
1001 | } | |
1002 | } | |
1003 | } | |
1004 | if ((access_mask & ACE_EXECUTE)) { | |
1005 | if (!(seen & S_IXUSR)) { | |
1006 | seen |= S_IXUSR; | |
1007 | if (type == ALLOW) { | |
1008 | mode |= S_IXUSR; | |
1009 | } | |
1010 | } | |
1011 | if (!(seen & S_IXGRP)) { | |
1012 | seen |= S_IXGRP; | |
1013 | if (type == ALLOW) { | |
1014 | mode |= S_IXGRP; | |
1015 | } | |
1016 | } | |
1017 | if (!(seen & S_IXOTH)) { | |
1018 | seen |= S_IXOTH; | |
1019 | if (type == ALLOW) { | |
1020 | mode |= S_IXOTH; | |
1021 | } | |
1022 | } | |
1023 | } | |
45d1cae3 BB |
1024 | } else { |
1025 | /* | |
1026 | * Only care if this IDENTIFIER_GROUP or | |
1027 | * USER ACE denies execute access to someone, | |
1028 | * mode is not affected | |
1029 | */ | |
1030 | if ((access_mask & ACE_EXECUTE) && type == DENY) | |
1031 | an_exec_denied = B_TRUE; | |
34dc7c2f | 1032 | } |
34dc7c2f | 1033 | } |
45d1cae3 BB |
1034 | |
1035 | /* | |
1036 | * Failure to allow is effectively a deny, so execute permission | |
1037 | * is denied if it was never mentioned or if we explicitly | |
1038 | * weren't allowed it. | |
1039 | */ | |
1040 | if (!an_exec_denied && | |
1041 | ((seen & ALL_MODE_EXECS) != ALL_MODE_EXECS || | |
1042 | (mode & ALL_MODE_EXECS) != ALL_MODE_EXECS)) | |
1043 | an_exec_denied = B_TRUE; | |
1044 | ||
1045 | if (an_exec_denied) | |
428870ff | 1046 | *pflags &= ~ZFS_NO_EXECS_DENIED; |
45d1cae3 | 1047 | else |
428870ff | 1048 | *pflags |= ZFS_NO_EXECS_DENIED; |
45d1cae3 | 1049 | |
34dc7c2f BB |
1050 | return (mode); |
1051 | } | |
1052 | ||
34dc7c2f | 1053 | /* |
45d1cae3 BB |
1054 | * Read an external acl object. If the intent is to modify, always |
1055 | * create a new acl and leave any cached acl in place. | |
34dc7c2f BB |
1056 | */ |
1057 | static int | |
572e2857 BB |
1058 | zfs_acl_node_read(znode_t *zp, boolean_t have_lock, zfs_acl_t **aclpp, |
1059 | boolean_t will_modify) | |
34dc7c2f | 1060 | { |
34dc7c2f | 1061 | zfs_acl_t *aclp; |
ddc07fa5 CW |
1062 | int aclsize = 0; |
1063 | int acl_count = 0; | |
34dc7c2f | 1064 | zfs_acl_node_t *aclnode; |
428870ff BB |
1065 | zfs_acl_phys_t znode_acl; |
1066 | int version; | |
1067 | int error; | |
572e2857 | 1068 | boolean_t drop_lock = B_FALSE; |
34dc7c2f BB |
1069 | |
1070 | ASSERT(MUTEX_HELD(&zp->z_acl_lock)); | |
1071 | ||
45d1cae3 BB |
1072 | if (zp->z_acl_cached && !will_modify) { |
1073 | *aclpp = zp->z_acl_cached; | |
1074 | return (0); | |
1075 | } | |
1076 | ||
572e2857 BB |
1077 | /* |
1078 | * close race where znode could be upgrade while trying to | |
1079 | * read the znode attributes. | |
1080 | * | |
1081 | * But this could only happen if the file isn't already an SA | |
1082 | * znode | |
1083 | */ | |
1084 | if (!zp->z_is_sa && !have_lock) { | |
1085 | mutex_enter(&zp->z_lock); | |
1086 | drop_lock = B_TRUE; | |
1087 | } | |
1088 | version = zfs_znode_acl_version(zp); | |
34dc7c2f | 1089 | |
428870ff | 1090 | if ((error = zfs_acl_znode_info(zp, &aclsize, |
572e2857 BB |
1091 | &acl_count, &znode_acl)) != 0) { |
1092 | goto done; | |
1093 | } | |
428870ff BB |
1094 | |
1095 | aclp = zfs_acl_alloc(version); | |
34dc7c2f | 1096 | |
34dc7c2f BB |
1097 | aclp->z_acl_count = acl_count; |
1098 | aclp->z_acl_bytes = aclsize; | |
1099 | ||
428870ff BB |
1100 | aclnode = zfs_acl_node_alloc(aclsize); |
1101 | aclnode->z_ace_count = aclp->z_acl_count; | |
1102 | aclnode->z_size = aclsize; | |
1103 | ||
1104 | if (!zp->z_is_sa) { | |
1105 | if (znode_acl.z_acl_extern_obj) { | |
3558fd73 | 1106 | error = dmu_read(ZTOZSB(zp)->z_os, |
428870ff BB |
1107 | znode_acl.z_acl_extern_obj, 0, aclnode->z_size, |
1108 | aclnode->z_acldata, DMU_READ_PREFETCH); | |
1109 | } else { | |
1110 | bcopy(znode_acl.z_ace_data, aclnode->z_acldata, | |
1111 | aclnode->z_size); | |
1112 | } | |
1113 | } else { | |
3558fd73 | 1114 | error = sa_lookup(zp->z_sa_hdl, SA_ZPL_DACL_ACES(ZTOZSB(zp)), |
428870ff BB |
1115 | aclnode->z_acldata, aclnode->z_size); |
1116 | } | |
1117 | ||
34dc7c2f BB |
1118 | if (error != 0) { |
1119 | zfs_acl_free(aclp); | |
428870ff | 1120 | zfs_acl_node_free(aclnode); |
b128c09f BB |
1121 | /* convert checksum errors into IO errors */ |
1122 | if (error == ECKSUM) | |
2e528b49 | 1123 | error = SET_ERROR(EIO); |
572e2857 | 1124 | goto done; |
34dc7c2f BB |
1125 | } |
1126 | ||
428870ff BB |
1127 | list_insert_head(&aclp->z_acl, aclnode); |
1128 | ||
34dc7c2f | 1129 | *aclpp = aclp; |
45d1cae3 BB |
1130 | if (!will_modify) |
1131 | zp->z_acl_cached = aclp; | |
572e2857 BB |
1132 | done: |
1133 | if (drop_lock) | |
1134 | mutex_exit(&zp->z_lock); | |
1135 | return (error); | |
34dc7c2f BB |
1136 | } |
1137 | ||
428870ff BB |
1138 | /*ARGSUSED*/ |
1139 | void | |
1140 | zfs_acl_data_locator(void **dataptr, uint32_t *length, uint32_t buflen, | |
1141 | boolean_t start, void *userdata) | |
1142 | { | |
1143 | zfs_acl_locator_cb_t *cb = (zfs_acl_locator_cb_t *)userdata; | |
1144 | ||
1145 | if (start) { | |
1146 | cb->cb_acl_node = list_head(&cb->cb_aclp->z_acl); | |
1147 | } else { | |
1148 | cb->cb_acl_node = list_next(&cb->cb_aclp->z_acl, | |
1149 | cb->cb_acl_node); | |
1150 | } | |
1151 | *dataptr = cb->cb_acl_node->z_acldata; | |
1152 | *length = cb->cb_acl_node->z_size; | |
1153 | } | |
1154 | ||
428870ff BB |
1155 | int |
1156 | zfs_acl_chown_setattr(znode_t *zp) | |
1157 | { | |
1158 | int error; | |
1159 | zfs_acl_t *aclp; | |
428870ff | 1160 | |
d1d7e268 MK |
1161 | if (ZTOZSB(zp)->z_acl_type == ZFS_ACLTYPE_POSIXACL) |
1162 | return (0); | |
023699cd | 1163 | |
572e2857 BB |
1164 | ASSERT(MUTEX_HELD(&zp->z_lock)); |
1165 | ASSERT(MUTEX_HELD(&zp->z_acl_lock)); | |
428870ff | 1166 | |
356d9ed4 TC |
1167 | error = zfs_acl_node_read(zp, B_TRUE, &aclp, B_FALSE); |
1168 | if (error == 0 && aclp->z_acl_count > 0) | |
12fa7f34 | 1169 | zp->z_mode = ZTOI(zp)->i_mode = |
1170 | zfs_mode_compute(zp->z_mode, aclp, | |
2c6abf15 NB |
1171 | &zp->z_pflags, KUID_TO_SUID(ZTOI(zp)->i_uid), |
1172 | KGID_TO_SGID(ZTOI(zp)->i_gid)); | |
d1d7e268 | 1173 | |
4461aa61 TC |
1174 | /* |
1175 | * Some ZFS implementations (ZEVO) create neither a ZNODE_ACL | |
1176 | * nor a DACL_ACES SA in which case ENOENT is returned from | |
1177 | * zfs_acl_node_read() when the SA can't be located. | |
1178 | * Allow chown/chgrp to succeed in these cases rather than | |
1179 | * returning an error that makes no sense in the context of | |
1180 | * the caller. | |
1181 | */ | |
1182 | if (error == ENOENT) | |
1183 | return (0); | |
1184 | ||
428870ff BB |
1185 | return (error); |
1186 | } | |
1187 | ||
538f669f BB |
1188 | static void |
1189 | acl_trivial_access_masks(mode_t mode, uint32_t *allow0, uint32_t *deny1, | |
1190 | uint32_t *deny2, uint32_t *owner, uint32_t *group, uint32_t *everyone) | |
1191 | { | |
1192 | *deny1 = *deny2 = *allow0 = *group = 0; | |
1193 | ||
1194 | if (!(mode & S_IRUSR) && (mode & (S_IRGRP|S_IROTH))) | |
1195 | *deny1 |= ACE_READ_DATA; | |
1196 | if (!(mode & S_IWUSR) && (mode & (S_IWGRP|S_IWOTH))) | |
1197 | *deny1 |= ACE_WRITE_DATA; | |
1198 | if (!(mode & S_IXUSR) && (mode & (S_IXGRP|S_IXOTH))) | |
1199 | *deny1 |= ACE_EXECUTE; | |
1200 | ||
1201 | if (!(mode & S_IRGRP) && (mode & S_IROTH)) | |
1202 | *deny2 = ACE_READ_DATA; | |
1203 | if (!(mode & S_IWGRP) && (mode & S_IWOTH)) | |
1204 | *deny2 |= ACE_WRITE_DATA; | |
1205 | if (!(mode & S_IXGRP) && (mode & S_IXOTH)) | |
1206 | *deny2 |= ACE_EXECUTE; | |
1207 | ||
1208 | if ((mode & S_IRUSR) && (!(mode & S_IRGRP) && (mode & S_IROTH))) | |
1209 | *allow0 |= ACE_READ_DATA; | |
1210 | if ((mode & S_IWUSR) && (!(mode & S_IWGRP) && (mode & S_IWOTH))) | |
1211 | *allow0 |= ACE_WRITE_DATA; | |
1212 | if ((mode & S_IXUSR) && (!(mode & S_IXGRP) && (mode & S_IXOTH))) | |
1213 | *allow0 |= ACE_EXECUTE; | |
1214 | ||
1215 | *owner = ACE_WRITE_ATTRIBUTES|ACE_WRITE_OWNER|ACE_WRITE_ACL| | |
1216 | ACE_WRITE_NAMED_ATTRS|ACE_READ_ACL|ACE_READ_ATTRIBUTES| | |
1217 | ACE_READ_NAMED_ATTRS|ACE_SYNCHRONIZE; | |
1218 | if (mode & S_IRUSR) | |
1219 | *owner |= ACE_READ_DATA; | |
1220 | if (mode & S_IWUSR) | |
1221 | *owner |= ACE_WRITE_DATA|ACE_APPEND_DATA; | |
1222 | if (mode & S_IXUSR) | |
1223 | *owner |= ACE_EXECUTE; | |
1224 | ||
1225 | *group = ACE_READ_ACL|ACE_READ_ATTRIBUTES| ACE_READ_NAMED_ATTRS| | |
1226 | ACE_SYNCHRONIZE; | |
1227 | if (mode & S_IRGRP) | |
1228 | *group |= ACE_READ_DATA; | |
1229 | if (mode & S_IWGRP) | |
1230 | *group |= ACE_WRITE_DATA|ACE_APPEND_DATA; | |
1231 | if (mode & S_IXGRP) | |
1232 | *group |= ACE_EXECUTE; | |
1233 | ||
1234 | *everyone = ACE_READ_ACL|ACE_READ_ATTRIBUTES| ACE_READ_NAMED_ATTRS| | |
1235 | ACE_SYNCHRONIZE; | |
1236 | if (mode & S_IROTH) | |
1237 | *everyone |= ACE_READ_DATA; | |
1238 | if (mode & S_IWOTH) | |
1239 | *everyone |= ACE_WRITE_DATA|ACE_APPEND_DATA; | |
1240 | if (mode & S_IXOTH) | |
1241 | *everyone |= ACE_EXECUTE; | |
1242 | } | |
1243 | ||
1244 | /* | |
1245 | * ace_trivial: | |
1246 | * determine whether an ace_t acl is trivial | |
1247 | * | |
1248 | * Trivialness implies that the acl is composed of only | |
1249 | * owner, group, everyone entries. ACL can't | |
1250 | * have read_acl denied, and write_owner/write_acl/write_attributes | |
1251 | * can only be owner@ entry. | |
1252 | */ | |
1253 | static int | |
1254 | ace_trivial_common(void *acep, int aclcnt, | |
1255 | uint64_t (*walk)(void *, uint64_t, int aclcnt, | |
1256 | uint16_t *, uint16_t *, uint32_t *)) | |
1257 | { | |
1258 | uint16_t flags; | |
1259 | uint32_t mask; | |
1260 | uint16_t type; | |
1261 | uint64_t cookie = 0; | |
1262 | ||
1263 | while ((cookie = walk(acep, cookie, aclcnt, &flags, &type, &mask))) { | |
1264 | switch (flags & ACE_TYPE_FLAGS) { | |
1265 | case ACE_OWNER: | |
1266 | case ACE_GROUP|ACE_IDENTIFIER_GROUP: | |
1267 | case ACE_EVERYONE: | |
1268 | break; | |
1269 | default: | |
1270 | return (1); | |
1271 | } | |
1272 | ||
1273 | if (flags & (ACE_FILE_INHERIT_ACE| | |
1274 | ACE_DIRECTORY_INHERIT_ACE|ACE_NO_PROPAGATE_INHERIT_ACE| | |
1275 | ACE_INHERIT_ONLY_ACE)) | |
1276 | return (1); | |
1277 | ||
1278 | /* | |
1279 | * Special check for some special bits | |
1280 | * | |
1281 | * Don't allow anybody to deny reading basic | |
1282 | * attributes or a files ACL. | |
1283 | */ | |
1284 | if ((mask & (ACE_READ_ACL|ACE_READ_ATTRIBUTES)) && | |
1285 | (type == ACE_ACCESS_DENIED_ACE_TYPE)) | |
1286 | return (1); | |
1287 | ||
1288 | /* | |
1289 | * Delete permissions are never set by default | |
1290 | */ | |
1291 | if (mask & (ACE_DELETE|ACE_DELETE_CHILD)) | |
1292 | return (1); | |
1293 | /* | |
1294 | * only allow owner@ to have | |
1295 | * write_acl/write_owner/write_attributes/write_xattr/ | |
1296 | */ | |
1297 | if (type == ACE_ACCESS_ALLOWED_ACE_TYPE && | |
1298 | (!(flags & ACE_OWNER) && (mask & | |
1299 | (ACE_WRITE_OWNER|ACE_WRITE_ACL| ACE_WRITE_ATTRIBUTES| | |
1300 | ACE_WRITE_NAMED_ATTRS)))) | |
1301 | return (1); | |
1302 | ||
1303 | } | |
1304 | ||
1305 | return (0); | |
1306 | } | |
1307 | ||
34dc7c2f BB |
1308 | /* |
1309 | * common code for setting ACLs. | |
1310 | * | |
1311 | * This function is called from zfs_mode_update, zfs_perm_init, and zfs_setacl. | |
1312 | * zfs_setacl passes a non-NULL inherit pointer (ihp) to indicate that it's | |
1313 | * already checked the acl and knows whether to inherit. | |
1314 | */ | |
1315 | int | |
9babb374 | 1316 | zfs_aclset_common(znode_t *zp, zfs_acl_t *aclp, cred_t *cr, dmu_tx_t *tx) |
34dc7c2f | 1317 | { |
428870ff | 1318 | int error; |
0037b49e | 1319 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
428870ff BB |
1320 | dmu_object_type_t otype; |
1321 | zfs_acl_locator_cb_t locate = { 0 }; | |
1322 | uint64_t mode; | |
1323 | sa_bulk_attr_t bulk[5]; | |
1324 | uint64_t ctime[2]; | |
1325 | int count = 0; | |
428870ff BB |
1326 | |
1327 | mode = zp->z_mode; | |
1328 | ||
572e2857 | 1329 | mode = zfs_mode_compute(mode, aclp, &zp->z_pflags, |
64aefee1 | 1330 | KUID_TO_SUID(ZTOI(zp)->i_uid), KGID_TO_SGID(ZTOI(zp)->i_gid)); |
34dc7c2f | 1331 | |
12fa7f34 | 1332 | zp->z_mode = ZTOI(zp)->i_mode = mode; |
0037b49e | 1333 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, |
428870ff | 1334 | &mode, sizeof (mode)); |
0037b49e | 1335 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, |
428870ff | 1336 | &zp->z_pflags, sizeof (zp->z_pflags)); |
0037b49e | 1337 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, |
428870ff | 1338 | &ctime, sizeof (ctime)); |
34dc7c2f | 1339 | |
45d1cae3 BB |
1340 | if (zp->z_acl_cached) { |
1341 | zfs_acl_free(zp->z_acl_cached); | |
1342 | zp->z_acl_cached = NULL; | |
1343 | } | |
1344 | ||
34dc7c2f | 1345 | /* |
428870ff | 1346 | * Upgrade needed? |
34dc7c2f | 1347 | */ |
0037b49e | 1348 | if (!zfsvfs->z_use_fuids) { |
34dc7c2f BB |
1349 | otype = DMU_OT_OLDACL; |
1350 | } else { | |
1351 | if ((aclp->z_version == ZFS_ACL_VERSION_INITIAL) && | |
0037b49e | 1352 | (zfsvfs->z_version >= ZPL_VERSION_FUID)) |
9babb374 | 1353 | zfs_acl_xform(zp, aclp, cr); |
34dc7c2f BB |
1354 | ASSERT(aclp->z_version >= ZFS_ACL_VERSION_FUID); |
1355 | otype = DMU_OT_ACL; | |
1356 | } | |
1357 | ||
428870ff BB |
1358 | /* |
1359 | * Arrgh, we have to handle old on disk format | |
1360 | * as well as newer (preferred) SA format. | |
1361 | */ | |
1362 | ||
1363 | if (zp->z_is_sa) { /* the easy case, just update the ACL attribute */ | |
1364 | locate.cb_aclp = aclp; | |
0037b49e | 1365 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_DACL_ACES(zfsvfs), |
428870ff | 1366 | zfs_acl_data_locator, &locate, aclp->z_acl_bytes); |
0037b49e | 1367 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_DACL_COUNT(zfsvfs), |
428870ff BB |
1368 | NULL, &aclp->z_acl_count, sizeof (uint64_t)); |
1369 | } else { /* Painful legacy way */ | |
1370 | zfs_acl_node_t *aclnode; | |
1371 | uint64_t off = 0; | |
1372 | zfs_acl_phys_t acl_phys; | |
1373 | uint64_t aoid; | |
1374 | ||
0037b49e | 1375 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_ZNODE_ACL(zfsvfs), |
428870ff BB |
1376 | &acl_phys, sizeof (acl_phys))) != 0) |
1377 | return (error); | |
1378 | ||
1379 | aoid = acl_phys.z_acl_extern_obj; | |
1380 | ||
1381 | if (aclp->z_acl_bytes > ZFS_ACE_SPACE) { | |
1382 | /* | |
1383 | * If ACL was previously external and we are now | |
1384 | * converting to new ACL format then release old | |
1385 | * ACL object and create a new one. | |
1386 | */ | |
1387 | if (aoid && | |
1388 | aclp->z_version != acl_phys.z_acl_version) { | |
0037b49e | 1389 | error = dmu_object_free(zfsvfs->z_os, aoid, tx); |
428870ff BB |
1390 | if (error) |
1391 | return (error); | |
1392 | aoid = 0; | |
1393 | } | |
1394 | if (aoid == 0) { | |
0037b49e | 1395 | aoid = dmu_object_alloc(zfsvfs->z_os, |
428870ff BB |
1396 | otype, aclp->z_acl_bytes, |
1397 | otype == DMU_OT_ACL ? | |
1398 | DMU_OT_SYSACL : DMU_OT_NONE, | |
1399 | otype == DMU_OT_ACL ? | |
50c957f7 | 1400 | DN_OLD_MAX_BONUSLEN : 0, tx); |
428870ff | 1401 | } else { |
0037b49e | 1402 | (void) dmu_object_set_blocksize(zfsvfs->z_os, |
428870ff BB |
1403 | aoid, aclp->z_acl_bytes, 0, tx); |
1404 | } | |
1405 | acl_phys.z_acl_extern_obj = aoid; | |
1406 | for (aclnode = list_head(&aclp->z_acl); aclnode; | |
1407 | aclnode = list_next(&aclp->z_acl, aclnode)) { | |
1408 | if (aclnode->z_ace_count == 0) | |
1409 | continue; | |
0037b49e | 1410 | dmu_write(zfsvfs->z_os, aoid, off, |
428870ff BB |
1411 | aclnode->z_size, aclnode->z_acldata, tx); |
1412 | off += aclnode->z_size; | |
1413 | } | |
34dc7c2f | 1414 | } else { |
428870ff BB |
1415 | void *start = acl_phys.z_ace_data; |
1416 | /* | |
1417 | * Migrating back embedded? | |
1418 | */ | |
1419 | if (acl_phys.z_acl_extern_obj) { | |
0037b49e | 1420 | error = dmu_object_free(zfsvfs->z_os, |
428870ff BB |
1421 | acl_phys.z_acl_extern_obj, tx); |
1422 | if (error) | |
1423 | return (error); | |
1424 | acl_phys.z_acl_extern_obj = 0; | |
1425 | } | |
1426 | ||
1427 | for (aclnode = list_head(&aclp->z_acl); aclnode; | |
1428 | aclnode = list_next(&aclp->z_acl, aclnode)) { | |
1429 | if (aclnode->z_ace_count == 0) | |
1430 | continue; | |
1431 | bcopy(aclnode->z_acldata, start, | |
1432 | aclnode->z_size); | |
1433 | start = (caddr_t)start + aclnode->z_size; | |
1434 | } | |
34dc7c2f | 1435 | } |
34dc7c2f | 1436 | /* |
428870ff BB |
1437 | * If Old version then swap count/bytes to match old |
1438 | * layout of znode_acl_phys_t. | |
34dc7c2f | 1439 | */ |
428870ff BB |
1440 | if (aclp->z_version == ZFS_ACL_VERSION_INITIAL) { |
1441 | acl_phys.z_acl_size = aclp->z_acl_count; | |
1442 | acl_phys.z_acl_count = aclp->z_acl_bytes; | |
1443 | } else { | |
1444 | acl_phys.z_acl_size = aclp->z_acl_bytes; | |
1445 | acl_phys.z_acl_count = aclp->z_acl_count; | |
34dc7c2f | 1446 | } |
428870ff | 1447 | acl_phys.z_acl_version = aclp->z_version; |
34dc7c2f | 1448 | |
0037b49e | 1449 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, |
428870ff | 1450 | &acl_phys, sizeof (acl_phys)); |
34dc7c2f BB |
1451 | } |
1452 | ||
34dc7c2f BB |
1453 | /* |
1454 | * Replace ACL wide bits, but first clear them. | |
1455 | */ | |
428870ff | 1456 | zp->z_pflags &= ~ZFS_ACL_WIDE_FLAGS; |
34dc7c2f | 1457 | |
428870ff | 1458 | zp->z_pflags |= aclp->z_hints; |
34dc7c2f BB |
1459 | |
1460 | if (ace_trivial_common(aclp, 0, zfs_ace_walk) == 0) | |
428870ff | 1461 | zp->z_pflags |= ZFS_ACL_TRIVIAL; |
34dc7c2f | 1462 | |
0df9673f | 1463 | zfs_tstamp_update_setup(zp, STATE_CHANGED, NULL, ctime); |
428870ff | 1464 | return (sa_bulk_update(zp->z_sa_hdl, bulk, count, tx)); |
34dc7c2f BB |
1465 | } |
1466 | ||
34dc7c2f | 1467 | static void |
0037b49e | 1468 | zfs_acl_chmod(zfsvfs_t *zfsvfs, uint64_t mode, zfs_acl_t *aclp) |
34dc7c2f | 1469 | { |
428870ff | 1470 | void *acep = NULL; |
34dc7c2f | 1471 | uint64_t who; |
428870ff BB |
1472 | int new_count, new_bytes; |
1473 | int ace_size; | |
3558fd73 | 1474 | int entry_type; |
34dc7c2f BB |
1475 | uint16_t iflags, type; |
1476 | uint32_t access_mask; | |
428870ff | 1477 | zfs_acl_node_t *newnode; |
0a6b03d3 | 1478 | size_t abstract_size = aclp->z_ops->ace_abstract_size(); |
3558fd73 BB |
1479 | void *zacep; |
1480 | uint32_t owner, group, everyone; | |
428870ff BB |
1481 | uint32_t deny1, deny2, allow0; |
1482 | ||
1483 | new_count = new_bytes = 0; | |
1484 | ||
1485 | acl_trivial_access_masks((mode_t)mode, &allow0, &deny1, &deny2, | |
1486 | &owner, &group, &everyone); | |
1487 | ||
1488 | newnode = zfs_acl_node_alloc((abstract_size * 6) + aclp->z_acl_bytes); | |
1489 | ||
1490 | zacep = newnode->z_acldata; | |
1491 | if (allow0) { | |
1492 | zfs_set_ace(aclp, zacep, allow0, ALLOW, -1, ACE_OWNER); | |
1493 | zacep = (void *)((uintptr_t)zacep + abstract_size); | |
1494 | new_count++; | |
1495 | new_bytes += abstract_size; | |
d3cc8b15 WA |
1496 | } |
1497 | if (deny1) { | |
428870ff BB |
1498 | zfs_set_ace(aclp, zacep, deny1, DENY, -1, ACE_OWNER); |
1499 | zacep = (void *)((uintptr_t)zacep + abstract_size); | |
1500 | new_count++; | |
1501 | new_bytes += abstract_size; | |
1502 | } | |
1503 | if (deny2) { | |
1504 | zfs_set_ace(aclp, zacep, deny2, DENY, -1, OWNING_GROUP); | |
1505 | zacep = (void *)((uintptr_t)zacep + abstract_size); | |
1506 | new_count++; | |
1507 | new_bytes += abstract_size; | |
1508 | } | |
34dc7c2f | 1509 | |
149e873a BB |
1510 | while ((acep = zfs_acl_next_ace(aclp, acep, &who, &access_mask, |
1511 | &iflags, &type))) { | |
428870ff | 1512 | uint16_t inherit_flags; |
34dc7c2f BB |
1513 | |
1514 | entry_type = (iflags & ACE_TYPE_FLAGS); | |
428870ff BB |
1515 | inherit_flags = (iflags & ALL_INHERIT); |
1516 | ||
1517 | if ((entry_type == ACE_OWNER || entry_type == ACE_EVERYONE || | |
1518 | (entry_type == OWNING_GROUP)) && | |
1519 | ((inherit_flags & ACE_INHERIT_ONLY_ACE) == 0)) { | |
1520 | continue; | |
1521 | } | |
34dc7c2f BB |
1522 | |
1523 | if ((type != ALLOW && type != DENY) || | |
428870ff BB |
1524 | (inherit_flags & ACE_INHERIT_ONLY_ACE)) { |
1525 | if (inherit_flags) | |
34dc7c2f BB |
1526 | aclp->z_hints |= ZFS_INHERIT_ACE; |
1527 | switch (type) { | |
1528 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
1529 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
1530 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
1531 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
1532 | aclp->z_hints |= ZFS_ACL_OBJ_ACE; | |
1533 | break; | |
1534 | } | |
34dc7c2f | 1535 | } else { |
34dc7c2f | 1536 | |
428870ff BB |
1537 | /* |
1538 | * Limit permissions to be no greater than | |
1539 | * group permissions | |
1540 | */ | |
0037b49e | 1541 | if (zfsvfs->z_acl_inherit == ZFS_ACL_RESTRICTED) { |
428870ff BB |
1542 | if (!(mode & S_IRGRP)) |
1543 | access_mask &= ~ACE_READ_DATA; | |
1544 | if (!(mode & S_IWGRP)) | |
1545 | access_mask &= | |
1546 | ~(ACE_WRITE_DATA|ACE_APPEND_DATA); | |
1547 | if (!(mode & S_IXGRP)) | |
1548 | access_mask &= ~ACE_EXECUTE; | |
1549 | access_mask &= | |
1550 | ~(ACE_WRITE_OWNER|ACE_WRITE_ACL| | |
1551 | ACE_WRITE_ATTRIBUTES|ACE_WRITE_NAMED_ATTRS); | |
1552 | } | |
34dc7c2f | 1553 | } |
428870ff | 1554 | zfs_set_ace(aclp, zacep, access_mask, type, who, iflags); |
0a6b03d3 | 1555 | ace_size = aclp->z_ops->ace_size(acep); |
428870ff BB |
1556 | zacep = (void *)((uintptr_t)zacep + ace_size); |
1557 | new_count++; | |
1558 | new_bytes += ace_size; | |
1559 | } | |
1560 | zfs_set_ace(aclp, zacep, owner, 0, -1, ACE_OWNER); | |
1561 | zacep = (void *)((uintptr_t)zacep + abstract_size); | |
1562 | zfs_set_ace(aclp, zacep, group, 0, -1, OWNING_GROUP); | |
1563 | zacep = (void *)((uintptr_t)zacep + abstract_size); | |
1564 | zfs_set_ace(aclp, zacep, everyone, 0, -1, ACE_EVERYONE); | |
1565 | ||
1566 | new_count += 3; | |
1567 | new_bytes += abstract_size * 3; | |
1568 | zfs_acl_release_nodes(aclp); | |
1569 | aclp->z_acl_count = new_count; | |
1570 | aclp->z_acl_bytes = new_bytes; | |
1571 | newnode->z_ace_count = new_count; | |
1572 | newnode->z_size = new_bytes; | |
1573 | list_insert_tail(&aclp->z_acl, newnode); | |
34dc7c2f BB |
1574 | } |
1575 | ||
572e2857 | 1576 | void |
34dc7c2f BB |
1577 | zfs_acl_chmod_setattr(znode_t *zp, zfs_acl_t **aclp, uint64_t mode) |
1578 | { | |
34dc7c2f | 1579 | mutex_enter(&zp->z_acl_lock); |
572e2857 | 1580 | mutex_enter(&zp->z_lock); |
428870ff BB |
1581 | *aclp = zfs_acl_alloc(zfs_acl_version_zp(zp)); |
1582 | (*aclp)->z_hints = zp->z_pflags & V4_ACL_WIDE_FLAGS; | |
3558fd73 | 1583 | zfs_acl_chmod(ZTOZSB(zp), mode, *aclp); |
34dc7c2f | 1584 | mutex_exit(&zp->z_lock); |
572e2857 | 1585 | mutex_exit(&zp->z_acl_lock); |
428870ff | 1586 | ASSERT(*aclp); |
34dc7c2f BB |
1587 | } |
1588 | ||
1589 | /* | |
1590 | * strip off write_owner and write_acl | |
1591 | */ | |
1592 | static void | |
0037b49e | 1593 | zfs_restricted_update(zfsvfs_t *zfsvfs, zfs_acl_t *aclp, void *acep) |
34dc7c2f | 1594 | { |
0a6b03d3 | 1595 | uint32_t mask = aclp->z_ops->ace_mask_get(acep); |
34dc7c2f | 1596 | |
0037b49e | 1597 | if ((zfsvfs->z_acl_inherit == ZFS_ACL_RESTRICTED) && |
0a6b03d3 | 1598 | (aclp->z_ops->ace_type_get(acep) == ALLOW)) { |
34dc7c2f | 1599 | mask &= ~RESTRICTED_CLEAR; |
0a6b03d3 | 1600 | aclp->z_ops->ace_mask_set(acep, mask); |
34dc7c2f BB |
1601 | } |
1602 | } | |
1603 | ||
1604 | /* | |
1605 | * Should ACE be inherited? | |
1606 | */ | |
1607 | static int | |
3558fd73 | 1608 | zfs_ace_can_use(umode_t obj_mode, uint16_t acep_flags) |
34dc7c2f | 1609 | { |
34dc7c2f BB |
1610 | int iflags = (acep_flags & 0xf); |
1611 | ||
3558fd73 | 1612 | if (S_ISDIR(obj_mode) && (iflags & ACE_DIRECTORY_INHERIT_ACE)) |
34dc7c2f BB |
1613 | return (1); |
1614 | else if (iflags & ACE_FILE_INHERIT_ACE) | |
3558fd73 | 1615 | return (!(S_ISDIR(obj_mode) && |
34dc7c2f BB |
1616 | (iflags & ACE_NO_PROPAGATE_INHERIT_ACE))); |
1617 | return (0); | |
1618 | } | |
1619 | ||
1620 | /* | |
1621 | * inherit inheritable ACEs from parent | |
1622 | */ | |
1623 | static zfs_acl_t * | |
0037b49e | 1624 | zfs_acl_inherit(zfsvfs_t *zfsvfs, umode_t obj_mode, zfs_acl_t *paclp, |
9babb374 | 1625 | uint64_t mode, boolean_t *need_chmod) |
34dc7c2f | 1626 | { |
34dc7c2f | 1627 | void *pacep; |
428870ff BB |
1628 | void *acep; |
1629 | zfs_acl_node_t *aclnode; | |
34dc7c2f BB |
1630 | zfs_acl_t *aclp = NULL; |
1631 | uint64_t who; | |
1632 | uint32_t access_mask; | |
1633 | uint16_t iflags, newflags, type; | |
1634 | size_t ace_size; | |
1635 | void *data1, *data2; | |
1636 | size_t data1sz, data2sz; | |
3558fd73 BB |
1637 | boolean_t vdir = S_ISDIR(obj_mode); |
1638 | boolean_t vreg = S_ISREG(obj_mode); | |
b128c09f BB |
1639 | boolean_t passthrough, passthrough_x, noallow; |
1640 | ||
1641 | passthrough_x = | |
0037b49e | 1642 | zfsvfs->z_acl_inherit == ZFS_ACL_PASSTHROUGH_X; |
b128c09f | 1643 | passthrough = passthrough_x || |
0037b49e | 1644 | zfsvfs->z_acl_inherit == ZFS_ACL_PASSTHROUGH; |
b128c09f | 1645 | noallow = |
0037b49e | 1646 | zfsvfs->z_acl_inherit == ZFS_ACL_NOALLOW; |
34dc7c2f BB |
1647 | |
1648 | *need_chmod = B_TRUE; | |
1649 | pacep = NULL; | |
b128c09f | 1650 | aclp = zfs_acl_alloc(paclp->z_version); |
0037b49e | 1651 | if (zfsvfs->z_acl_inherit == ZFS_ACL_DISCARD || S_ISLNK(obj_mode)) |
b128c09f | 1652 | return (aclp); |
149e873a BB |
1653 | while ((pacep = zfs_acl_next_ace(paclp, pacep, &who, |
1654 | &access_mask, &iflags, &type))) { | |
34dc7c2f | 1655 | |
b128c09f BB |
1656 | /* |
1657 | * don't inherit bogus ACEs | |
1658 | */ | |
1659 | if (!zfs_acl_valid_ace_type(type, iflags)) | |
1660 | continue; | |
34dc7c2f | 1661 | |
b128c09f BB |
1662 | if (noallow && type == ALLOW) |
1663 | continue; | |
34dc7c2f | 1664 | |
0a6b03d3 | 1665 | ace_size = aclp->z_ops->ace_size(pacep); |
34dc7c2f | 1666 | |
3558fd73 | 1667 | if (!zfs_ace_can_use(obj_mode, iflags)) |
b128c09f BB |
1668 | continue; |
1669 | ||
1670 | /* | |
1671 | * If owner@, group@, or everyone@ inheritable | |
1672 | * then zfs_acl_chmod() isn't needed. | |
1673 | */ | |
1674 | if (passthrough && | |
1675 | ((iflags & (ACE_OWNER|ACE_EVERYONE)) || | |
1676 | ((iflags & OWNING_GROUP) == | |
1677 | OWNING_GROUP)) && (vreg || (vdir && (iflags & | |
1678 | ACE_DIRECTORY_INHERIT_ACE)))) { | |
1679 | *need_chmod = B_FALSE; | |
428870ff | 1680 | } |
b128c09f | 1681 | |
428870ff BB |
1682 | if (!vdir && passthrough_x && |
1683 | ((mode & (S_IXUSR | S_IXGRP | S_IXOTH)) == 0)) { | |
1684 | access_mask &= ~ACE_EXECUTE; | |
b128c09f BB |
1685 | } |
1686 | ||
1687 | aclnode = zfs_acl_node_alloc(ace_size); | |
1688 | list_insert_tail(&aclp->z_acl, aclnode); | |
1689 | acep = aclnode->z_acldata; | |
1690 | ||
1691 | zfs_set_ace(aclp, acep, access_mask, type, | |
1692 | who, iflags|ACE_INHERITED_ACE); | |
1693 | ||
1694 | /* | |
1695 | * Copy special opaque data if any | |
1696 | */ | |
0a6b03d3 RY |
1697 | if ((data1sz = paclp->z_ops->ace_data(pacep, &data1)) != 0) { |
1698 | VERIFY((data2sz = aclp->z_ops->ace_data(acep, | |
b128c09f BB |
1699 | &data2)) == data1sz); |
1700 | bcopy(data1, data2, data2sz); | |
1701 | } | |
428870ff | 1702 | |
b128c09f BB |
1703 | aclp->z_acl_count++; |
1704 | aclnode->z_ace_count++; | |
1705 | aclp->z_acl_bytes += aclnode->z_size; | |
0a6b03d3 | 1706 | newflags = aclp->z_ops->ace_flags_get(acep); |
b128c09f BB |
1707 | |
1708 | if (vdir) | |
1709 | aclp->z_hints |= ZFS_INHERIT_ACE; | |
1710 | ||
1711 | if ((iflags & ACE_NO_PROPAGATE_INHERIT_ACE) || !vdir) { | |
1712 | newflags &= ~ALL_INHERIT; | |
0a6b03d3 | 1713 | aclp->z_ops->ace_flags_set(acep, |
b128c09f | 1714 | newflags|ACE_INHERITED_ACE); |
0037b49e | 1715 | zfs_restricted_update(zfsvfs, aclp, acep); |
b128c09f BB |
1716 | continue; |
1717 | } | |
1718 | ||
1719 | ASSERT(vdir); | |
1720 | ||
428870ff BB |
1721 | /* |
1722 | * If only FILE_INHERIT is set then turn on | |
1723 | * inherit_only | |
1724 | */ | |
b128c09f | 1725 | if ((iflags & (ACE_FILE_INHERIT_ACE | |
428870ff | 1726 | ACE_DIRECTORY_INHERIT_ACE)) == ACE_FILE_INHERIT_ACE) { |
b128c09f | 1727 | newflags |= ACE_INHERIT_ONLY_ACE; |
0a6b03d3 | 1728 | aclp->z_ops->ace_flags_set(acep, |
b128c09f | 1729 | newflags|ACE_INHERITED_ACE); |
b128c09f | 1730 | } else { |
428870ff | 1731 | newflags &= ~ACE_INHERIT_ONLY_ACE; |
0a6b03d3 | 1732 | aclp->z_ops->ace_flags_set(acep, |
b128c09f | 1733 | newflags|ACE_INHERITED_ACE); |
34dc7c2f BB |
1734 | } |
1735 | } | |
1736 | return (aclp); | |
1737 | } | |
1738 | ||
1739 | /* | |
1740 | * Create file system object initial permissions | |
1741 | * including inheritable ACEs. | |
1742 | */ | |
9babb374 BB |
1743 | int |
1744 | zfs_acl_ids_create(znode_t *dzp, int flag, vattr_t *vap, cred_t *cr, | |
1745 | vsecattr_t *vsecp, zfs_acl_ids_t *acl_ids) | |
34dc7c2f | 1746 | { |
34dc7c2f | 1747 | int error; |
0037b49e | 1748 | zfsvfs_t *zfsvfs = ZTOZSB(dzp); |
34dc7c2f | 1749 | zfs_acl_t *paclp; |
100a91aa | 1750 | gid_t gid = vap->va_gid; |
34dc7c2f | 1751 | boolean_t need_chmod = B_TRUE; |
428870ff | 1752 | boolean_t inherited = B_FALSE; |
34dc7c2f | 1753 | |
9babb374 | 1754 | bzero(acl_ids, sizeof (zfs_acl_ids_t)); |
3558fd73 | 1755 | acl_ids->z_mode = vap->va_mode; |
34dc7c2f | 1756 | |
9babb374 | 1757 | if (vsecp) |
0037b49e | 1758 | if ((error = zfs_vsec_2_aclp(zfsvfs, vap->va_mode, vsecp, |
3558fd73 | 1759 | cr, &acl_ids->z_fuidp, &acl_ids->z_aclp)) != 0) |
9babb374 | 1760 | return (error); |
a405c8a6 BB |
1761 | |
1762 | acl_ids->z_fuid = vap->va_uid; | |
1763 | acl_ids->z_fgid = vap->va_gid; | |
100a91aa | 1764 | #ifdef HAVE_KSID |
34dc7c2f BB |
1765 | /* |
1766 | * Determine uid and gid. | |
1767 | */ | |
0037b49e | 1768 | if ((flag & IS_ROOT_NODE) || zfsvfs->z_replay || |
3558fd73 | 1769 | ((flag & IS_XATTR) && (S_ISDIR(vap->va_mode)))) { |
0037b49e | 1770 | acl_ids->z_fuid = zfs_fuid_create(zfsvfs, (uint64_t)vap->va_uid, |
3558fd73 | 1771 | cr, ZFS_OWNER, &acl_ids->z_fuidp); |
0037b49e | 1772 | acl_ids->z_fgid = zfs_fuid_create(zfsvfs, (uint64_t)vap->va_gid, |
3558fd73 | 1773 | cr, ZFS_GROUP, &acl_ids->z_fuidp); |
34dc7c2f BB |
1774 | gid = vap->va_gid; |
1775 | } else { | |
0037b49e | 1776 | acl_ids->z_fuid = zfs_fuid_create_cred(zfsvfs, ZFS_OWNER, |
9babb374 BB |
1777 | cr, &acl_ids->z_fuidp); |
1778 | acl_ids->z_fgid = 0; | |
34dc7c2f | 1779 | if (vap->va_mask & AT_GID) { |
0037b49e | 1780 | acl_ids->z_fgid = zfs_fuid_create(zfsvfs, |
9babb374 BB |
1781 | (uint64_t)vap->va_gid, |
1782 | cr, ZFS_GROUP, &acl_ids->z_fuidp); | |
34dc7c2f | 1783 | gid = vap->va_gid; |
2c6abf15 | 1784 | if (acl_ids->z_fgid != KGID_TO_SGID(ZTOI(dzp)->i_gid) && |
34dc7c2f BB |
1785 | !groupmember(vap->va_gid, cr) && |
1786 | secpolicy_vnode_create_gid(cr) != 0) | |
9babb374 | 1787 | acl_ids->z_fgid = 0; |
34dc7c2f | 1788 | } |
9babb374 | 1789 | if (acl_ids->z_fgid == 0) { |
428870ff BB |
1790 | if (dzp->z_mode & S_ISGID) { |
1791 | char *domain; | |
1792 | uint32_t rid; | |
1793 | ||
2c6abf15 NB |
1794 | acl_ids->z_fgid = KGID_TO_SGID( |
1795 | ZTOI(dzp)->i_gid); | |
0037b49e | 1796 | gid = zfs_fuid_map_id(zfsvfs, acl_ids->z_fgid, |
34dc7c2f | 1797 | cr, ZFS_GROUP); |
428870ff | 1798 | |
0037b49e | 1799 | if (zfsvfs->z_use_fuids && |
428870ff BB |
1800 | IS_EPHEMERAL(acl_ids->z_fgid)) { |
1801 | domain = zfs_fuid_idx_domain( | |
0037b49e | 1802 | &zfsvfs->z_fuid_idx, |
428870ff BB |
1803 | FUID_INDEX(acl_ids->z_fgid)); |
1804 | rid = FUID_RID(acl_ids->z_fgid); | |
1805 | zfs_fuid_node_add(&acl_ids->z_fuidp, | |
1806 | domain, rid, | |
1807 | FUID_INDEX(acl_ids->z_fgid), | |
1808 | acl_ids->z_fgid, ZFS_GROUP); | |
1809 | } | |
34dc7c2f | 1810 | } else { |
0037b49e | 1811 | acl_ids->z_fgid = zfs_fuid_create_cred(zfsvfs, |
9babb374 | 1812 | ZFS_GROUP, cr, &acl_ids->z_fuidp); |
34dc7c2f BB |
1813 | gid = crgetgid(cr); |
1814 | } | |
1815 | } | |
1816 | } | |
100a91aa | 1817 | #endif /* HAVE_KSID */ |
34dc7c2f BB |
1818 | |
1819 | /* | |
1820 | * If we're creating a directory, and the parent directory has the | |
1821 | * set-GID bit set, set in on the new directory. | |
1822 | * Otherwise, if the user is neither privileged nor a member of the | |
1823 | * file's new group, clear the file's set-GID bit. | |
1824 | */ | |
1825 | ||
428870ff | 1826 | if (!(flag & IS_ROOT_NODE) && (dzp->z_mode & S_ISGID) && |
3558fd73 | 1827 | (S_ISDIR(vap->va_mode))) { |
9babb374 | 1828 | acl_ids->z_mode |= S_ISGID; |
34dc7c2f | 1829 | } else { |
9babb374 | 1830 | if ((acl_ids->z_mode & S_ISGID) && |
34dc7c2f | 1831 | secpolicy_vnode_setids_setgids(cr, gid) != 0) |
9babb374 | 1832 | acl_ids->z_mode &= ~S_ISGID; |
34dc7c2f BB |
1833 | } |
1834 | ||
9babb374 | 1835 | if (acl_ids->z_aclp == NULL) { |
572e2857 | 1836 | mutex_enter(&dzp->z_acl_lock); |
9babb374 | 1837 | mutex_enter(&dzp->z_lock); |
3558fd73 | 1838 | if (!(flag & IS_ROOT_NODE) && (S_ISDIR(ZTOI(dzp)->i_mode) && |
428870ff BB |
1839 | (dzp->z_pflags & ZFS_INHERIT_ACE)) && |
1840 | !(dzp->z_pflags & ZFS_XATTR)) { | |
572e2857 BB |
1841 | VERIFY(0 == zfs_acl_node_read(dzp, B_TRUE, |
1842 | &paclp, B_FALSE)); | |
0037b49e | 1843 | acl_ids->z_aclp = zfs_acl_inherit(zfsvfs, |
3558fd73 | 1844 | vap->va_mode, paclp, acl_ids->z_mode, &need_chmod); |
428870ff | 1845 | inherited = B_TRUE; |
34dc7c2f | 1846 | } else { |
9babb374 BB |
1847 | acl_ids->z_aclp = |
1848 | zfs_acl_alloc(zfs_acl_version_zp(dzp)); | |
428870ff | 1849 | acl_ids->z_aclp->z_hints |= ZFS_ACL_TRIVIAL; |
9babb374 BB |
1850 | } |
1851 | mutex_exit(&dzp->z_lock); | |
572e2857 | 1852 | mutex_exit(&dzp->z_acl_lock); |
9babb374 | 1853 | if (need_chmod) { |
3558fd73 | 1854 | acl_ids->z_aclp->z_hints |= S_ISDIR(vap->va_mode) ? |
9babb374 | 1855 | ZFS_ACL_AUTO_INHERIT : 0; |
0037b49e | 1856 | zfs_acl_chmod(zfsvfs, acl_ids->z_mode, acl_ids->z_aclp); |
34dc7c2f | 1857 | } |
34dc7c2f BB |
1858 | } |
1859 | ||
428870ff BB |
1860 | if (inherited || vsecp) { |
1861 | acl_ids->z_mode = zfs_mode_compute(acl_ids->z_mode, | |
1862 | acl_ids->z_aclp, &acl_ids->z_aclp->z_hints, | |
1863 | acl_ids->z_fuid, acl_ids->z_fgid); | |
1864 | if (ace_trivial_common(acl_ids->z_aclp, 0, zfs_ace_walk) == 0) | |
1865 | acl_ids->z_aclp->z_hints |= ZFS_ACL_TRIVIAL; | |
1866 | } | |
1867 | ||
9babb374 BB |
1868 | return (0); |
1869 | } | |
34dc7c2f | 1870 | |
9babb374 BB |
1871 | /* |
1872 | * Free ACL and fuid_infop, but not the acl_ids structure | |
1873 | */ | |
1874 | void | |
1875 | zfs_acl_ids_free(zfs_acl_ids_t *acl_ids) | |
1876 | { | |
1877 | if (acl_ids->z_aclp) | |
1878 | zfs_acl_free(acl_ids->z_aclp); | |
1879 | if (acl_ids->z_fuidp) | |
1880 | zfs_fuid_info_free(acl_ids->z_fuidp); | |
1881 | acl_ids->z_aclp = NULL; | |
1882 | acl_ids->z_fuidp = NULL; | |
1883 | } | |
34dc7c2f | 1884 | |
9babb374 | 1885 | boolean_t |
0037b49e | 1886 | zfs_acl_ids_overquota(zfsvfs_t *zfsvfs, zfs_acl_ids_t *acl_ids) |
9babb374 | 1887 | { |
0037b49e BB |
1888 | return (zfs_fuid_overquota(zfsvfs, B_FALSE, acl_ids->z_fuid) || |
1889 | zfs_fuid_overquota(zfsvfs, B_TRUE, acl_ids->z_fgid) || | |
1890 | zfs_fuid_overobjquota(zfsvfs, B_FALSE, acl_ids->z_fuid) || | |
1891 | zfs_fuid_overobjquota(zfsvfs, B_TRUE, acl_ids->z_fgid)); | |
34dc7c2f BB |
1892 | } |
1893 | ||
1894 | /* | |
d3cc8b15 | 1895 | * Retrieve a file's ACL |
34dc7c2f BB |
1896 | */ |
1897 | int | |
1898 | zfs_getacl(znode_t *zp, vsecattr_t *vsecp, boolean_t skipaclchk, cred_t *cr) | |
1899 | { | |
1900 | zfs_acl_t *aclp; | |
1901 | ulong_t mask; | |
1902 | int error; | |
1903 | int count = 0; | |
1904 | int largeace = 0; | |
1905 | ||
1906 | mask = vsecp->vsa_mask & (VSA_ACE | VSA_ACECNT | | |
1907 | VSA_ACE_ACLFLAGS | VSA_ACE_ALLTYPES); | |
1908 | ||
34dc7c2f | 1909 | if (mask == 0) |
2e528b49 | 1910 | return (SET_ERROR(ENOSYS)); |
34dc7c2f | 1911 | |
149e873a | 1912 | if ((error = zfs_zaccess(zp, ACE_READ_ACL, 0, skipaclchk, cr))) |
428870ff BB |
1913 | return (error); |
1914 | ||
34dc7c2f BB |
1915 | mutex_enter(&zp->z_acl_lock); |
1916 | ||
572e2857 | 1917 | error = zfs_acl_node_read(zp, B_FALSE, &aclp, B_FALSE); |
34dc7c2f BB |
1918 | if (error != 0) { |
1919 | mutex_exit(&zp->z_acl_lock); | |
1920 | return (error); | |
1921 | } | |
1922 | ||
1923 | /* | |
1924 | * Scan ACL to determine number of ACEs | |
1925 | */ | |
428870ff | 1926 | if ((zp->z_pflags & ZFS_ACL_OBJ_ACE) && !(mask & VSA_ACE_ALLTYPES)) { |
34dc7c2f BB |
1927 | void *zacep = NULL; |
1928 | uint64_t who; | |
1929 | uint32_t access_mask; | |
1930 | uint16_t type, iflags; | |
1931 | ||
149e873a BB |
1932 | while ((zacep = zfs_acl_next_ace(aclp, zacep, |
1933 | &who, &access_mask, &iflags, &type))) { | |
34dc7c2f BB |
1934 | switch (type) { |
1935 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
1936 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
1937 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
1938 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
1939 | largeace++; | |
1940 | continue; | |
1941 | default: | |
1942 | count++; | |
1943 | } | |
1944 | } | |
1945 | vsecp->vsa_aclcnt = count; | |
1946 | } else | |
428870ff | 1947 | count = (int)aclp->z_acl_count; |
34dc7c2f BB |
1948 | |
1949 | if (mask & VSA_ACECNT) { | |
1950 | vsecp->vsa_aclcnt = count; | |
1951 | } | |
1952 | ||
1953 | if (mask & VSA_ACE) { | |
1954 | size_t aclsz; | |
1955 | ||
34dc7c2f BB |
1956 | aclsz = count * sizeof (ace_t) + |
1957 | sizeof (ace_object_t) * largeace; | |
1958 | ||
1959 | vsecp->vsa_aclentp = kmem_alloc(aclsz, KM_SLEEP); | |
1960 | vsecp->vsa_aclentsz = aclsz; | |
1961 | ||
1962 | if (aclp->z_version == ZFS_ACL_VERSION_FUID) | |
3558fd73 | 1963 | zfs_copy_fuid_2_ace(ZTOZSB(zp), aclp, cr, |
34dc7c2f BB |
1964 | vsecp->vsa_aclentp, !(mask & VSA_ACE_ALLTYPES)); |
1965 | else { | |
428870ff BB |
1966 | zfs_acl_node_t *aclnode; |
1967 | void *start = vsecp->vsa_aclentp; | |
1968 | ||
1969 | for (aclnode = list_head(&aclp->z_acl); aclnode; | |
1970 | aclnode = list_next(&aclp->z_acl, aclnode)) { | |
1971 | bcopy(aclnode->z_acldata, start, | |
1972 | aclnode->z_size); | |
1973 | start = (caddr_t)start + aclnode->z_size; | |
1974 | } | |
1975 | ASSERT((caddr_t)start - (caddr_t)vsecp->vsa_aclentp == | |
1976 | aclp->z_acl_bytes); | |
34dc7c2f BB |
1977 | } |
1978 | } | |
1979 | if (mask & VSA_ACE_ACLFLAGS) { | |
1980 | vsecp->vsa_aclflags = 0; | |
428870ff | 1981 | if (zp->z_pflags & ZFS_ACL_DEFAULTED) |
34dc7c2f | 1982 | vsecp->vsa_aclflags |= ACL_DEFAULTED; |
428870ff | 1983 | if (zp->z_pflags & ZFS_ACL_PROTECTED) |
34dc7c2f | 1984 | vsecp->vsa_aclflags |= ACL_PROTECTED; |
428870ff | 1985 | if (zp->z_pflags & ZFS_ACL_AUTO_INHERIT) |
34dc7c2f BB |
1986 | vsecp->vsa_aclflags |= ACL_AUTO_INHERIT; |
1987 | } | |
1988 | ||
1989 | mutex_exit(&zp->z_acl_lock); | |
1990 | ||
34dc7c2f BB |
1991 | return (0); |
1992 | } | |
1993 | ||
1994 | int | |
0037b49e | 1995 | zfs_vsec_2_aclp(zfsvfs_t *zfsvfs, umode_t obj_mode, |
9babb374 | 1996 | vsecattr_t *vsecp, cred_t *cr, zfs_fuid_info_t **fuidp, zfs_acl_t **zaclp) |
34dc7c2f BB |
1997 | { |
1998 | zfs_acl_t *aclp; | |
1999 | zfs_acl_node_t *aclnode; | |
2000 | int aclcnt = vsecp->vsa_aclcnt; | |
2001 | int error; | |
2002 | ||
2003 | if (vsecp->vsa_aclcnt > MAX_ACL_ENTRIES || vsecp->vsa_aclcnt <= 0) | |
2e528b49 | 2004 | return (SET_ERROR(EINVAL)); |
34dc7c2f | 2005 | |
0037b49e | 2006 | aclp = zfs_acl_alloc(zfs_acl_version(zfsvfs->z_version)); |
34dc7c2f BB |
2007 | |
2008 | aclp->z_hints = 0; | |
2009 | aclnode = zfs_acl_node_alloc(aclcnt * sizeof (zfs_object_ace_t)); | |
2010 | if (aclp->z_version == ZFS_ACL_VERSION_INITIAL) { | |
3558fd73 | 2011 | if ((error = zfs_copy_ace_2_oldace(obj_mode, aclp, |
34dc7c2f BB |
2012 | (ace_t *)vsecp->vsa_aclentp, aclnode->z_acldata, |
2013 | aclcnt, &aclnode->z_size)) != 0) { | |
2014 | zfs_acl_free(aclp); | |
2015 | zfs_acl_node_free(aclnode); | |
2016 | return (error); | |
2017 | } | |
2018 | } else { | |
0037b49e | 2019 | if ((error = zfs_copy_ace_2_fuid(zfsvfs, obj_mode, aclp, |
34dc7c2f | 2020 | vsecp->vsa_aclentp, aclnode->z_acldata, aclcnt, |
9babb374 | 2021 | &aclnode->z_size, fuidp, cr)) != 0) { |
34dc7c2f BB |
2022 | zfs_acl_free(aclp); |
2023 | zfs_acl_node_free(aclnode); | |
2024 | return (error); | |
2025 | } | |
2026 | } | |
2027 | aclp->z_acl_bytes = aclnode->z_size; | |
2028 | aclnode->z_ace_count = aclcnt; | |
2029 | aclp->z_acl_count = aclcnt; | |
2030 | list_insert_head(&aclp->z_acl, aclnode); | |
2031 | ||
2032 | /* | |
2033 | * If flags are being set then add them to z_hints | |
2034 | */ | |
2035 | if (vsecp->vsa_mask & VSA_ACE_ACLFLAGS) { | |
2036 | if (vsecp->vsa_aclflags & ACL_PROTECTED) | |
2037 | aclp->z_hints |= ZFS_ACL_PROTECTED; | |
2038 | if (vsecp->vsa_aclflags & ACL_DEFAULTED) | |
2039 | aclp->z_hints |= ZFS_ACL_DEFAULTED; | |
2040 | if (vsecp->vsa_aclflags & ACL_AUTO_INHERIT) | |
2041 | aclp->z_hints |= ZFS_ACL_AUTO_INHERIT; | |
2042 | } | |
2043 | ||
2044 | *zaclp = aclp; | |
2045 | ||
2046 | return (0); | |
2047 | } | |
2048 | ||
2049 | /* | |
d3cc8b15 | 2050 | * Set a file's ACL |
34dc7c2f BB |
2051 | */ |
2052 | int | |
2053 | zfs_setacl(znode_t *zp, vsecattr_t *vsecp, boolean_t skipaclchk, cred_t *cr) | |
2054 | { | |
0037b49e BB |
2055 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
2056 | zilog_t *zilog = zfsvfs->z_log; | |
34dc7c2f BB |
2057 | ulong_t mask = vsecp->vsa_mask & (VSA_ACE | VSA_ACECNT); |
2058 | dmu_tx_t *tx; | |
2059 | int error; | |
2060 | zfs_acl_t *aclp; | |
2061 | zfs_fuid_info_t *fuidp = NULL; | |
9babb374 | 2062 | boolean_t fuid_dirtied; |
572e2857 | 2063 | uint64_t acl_obj; |
34dc7c2f BB |
2064 | |
2065 | if (mask == 0) | |
2e528b49 | 2066 | return (SET_ERROR(ENOSYS)); |
34dc7c2f | 2067 | |
428870ff | 2068 | if (zp->z_pflags & ZFS_IMMUTABLE) |
2e528b49 | 2069 | return (SET_ERROR(EPERM)); |
34dc7c2f | 2070 | |
149e873a | 2071 | if ((error = zfs_zaccess(zp, ACE_WRITE_ACL, 0, skipaclchk, cr))) |
34dc7c2f BB |
2072 | return (error); |
2073 | ||
0037b49e | 2074 | error = zfs_vsec_2_aclp(zfsvfs, ZTOI(zp)->i_mode, vsecp, cr, &fuidp, |
9babb374 | 2075 | &aclp); |
34dc7c2f BB |
2076 | if (error) |
2077 | return (error); | |
2078 | ||
2079 | /* | |
2080 | * If ACL wide flags aren't being set then preserve any | |
2081 | * existing flags. | |
2082 | */ | |
2083 | if (!(vsecp->vsa_mask & VSA_ACE_ACLFLAGS)) { | |
428870ff BB |
2084 | aclp->z_hints |= |
2085 | (zp->z_pflags & V4_ACL_WIDE_FLAGS); | |
34dc7c2f BB |
2086 | } |
2087 | top: | |
34dc7c2f | 2088 | mutex_enter(&zp->z_acl_lock); |
572e2857 | 2089 | mutex_enter(&zp->z_lock); |
34dc7c2f | 2090 | |
0037b49e | 2091 | tx = dmu_tx_create(zfsvfs->z_os); |
428870ff BB |
2092 | |
2093 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE); | |
2094 | ||
0037b49e | 2095 | fuid_dirtied = zfsvfs->z_fuid_dirty; |
428870ff | 2096 | if (fuid_dirtied) |
0037b49e | 2097 | zfs_fuid_txhold(zfsvfs, tx); |
428870ff BB |
2098 | |
2099 | /* | |
2100 | * If old version and ACL won't fit in bonus and we aren't | |
2101 | * upgrading then take out necessary DMU holds | |
2102 | */ | |
2103 | ||
572e2857 | 2104 | if ((acl_obj = zfs_external_acl(zp)) != 0) { |
0037b49e | 2105 | if (zfsvfs->z_version >= ZPL_VERSION_FUID && |
572e2857 BB |
2106 | zfs_znode_acl_version(zp) <= ZFS_ACL_VERSION_INITIAL) { |
2107 | dmu_tx_hold_free(tx, acl_obj, 0, | |
428870ff | 2108 | DMU_OBJECT_END); |
572e2857 BB |
2109 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, |
2110 | aclp->z_acl_bytes); | |
34dc7c2f | 2111 | } else { |
572e2857 | 2112 | dmu_tx_hold_write(tx, acl_obj, 0, aclp->z_acl_bytes); |
34dc7c2f | 2113 | } |
428870ff | 2114 | } else if (!zp->z_is_sa && aclp->z_acl_bytes > ZFS_ACE_SPACE) { |
34dc7c2f BB |
2115 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, aclp->z_acl_bytes); |
2116 | } | |
34dc7c2f | 2117 | |
428870ff | 2118 | zfs_sa_upgrade_txholds(tx, zp); |
fb5f0bc8 | 2119 | error = dmu_tx_assign(tx, TXG_NOWAIT); |
34dc7c2f BB |
2120 | if (error) { |
2121 | mutex_exit(&zp->z_acl_lock); | |
2122 | mutex_exit(&zp->z_lock); | |
2123 | ||
fb5f0bc8 | 2124 | if (error == ERESTART) { |
34dc7c2f BB |
2125 | dmu_tx_wait(tx); |
2126 | dmu_tx_abort(tx); | |
2127 | goto top; | |
2128 | } | |
2129 | dmu_tx_abort(tx); | |
2130 | zfs_acl_free(aclp); | |
2131 | return (error); | |
2132 | } | |
2133 | ||
9babb374 | 2134 | error = zfs_aclset_common(zp, aclp, cr, tx); |
34dc7c2f | 2135 | ASSERT(error == 0); |
572e2857 | 2136 | ASSERT(zp->z_acl_cached == NULL); |
45d1cae3 | 2137 | zp->z_acl_cached = aclp; |
34dc7c2f | 2138 | |
9babb374 | 2139 | if (fuid_dirtied) |
0037b49e | 2140 | zfs_fuid_sync(zfsvfs, tx); |
9babb374 | 2141 | |
34dc7c2f BB |
2142 | zfs_log_acl(zilog, tx, zp, vsecp, fuidp); |
2143 | ||
2144 | if (fuidp) | |
2145 | zfs_fuid_info_free(fuidp); | |
34dc7c2f | 2146 | dmu_tx_commit(tx); |
c60bc1fb | 2147 | |
34dc7c2f | 2148 | mutex_exit(&zp->z_lock); |
572e2857 | 2149 | mutex_exit(&zp->z_acl_lock); |
34dc7c2f BB |
2150 | |
2151 | return (error); | |
2152 | } | |
2153 | ||
2154 | /* | |
9babb374 BB |
2155 | * Check accesses of interest (AoI) against attributes of the dataset |
2156 | * such as read-only. Returns zero if no AoI conflict with dataset | |
2157 | * attributes, otherwise an appropriate errno is returned. | |
34dc7c2f BB |
2158 | */ |
2159 | static int | |
9babb374 | 2160 | zfs_zaccess_dataset_check(znode_t *zp, uint32_t v4_mode) |
34dc7c2f | 2161 | { |
2cf7f52b | 2162 | if ((v4_mode & WRITE_MASK) && (zfs_is_readonly(ZTOZSB(zp))) && |
3558fd73 BB |
2163 | (!S_ISDEV(ZTOI(zp)->i_mode) || |
2164 | (S_ISDEV(ZTOI(zp)->i_mode) && (v4_mode & WRITE_MASK_ATTRS)))) { | |
2e528b49 | 2165 | return (SET_ERROR(EROFS)); |
34dc7c2f BB |
2166 | } |
2167 | ||
2168 | /* | |
2169 | * Only check for READONLY on non-directories. | |
2170 | */ | |
2171 | if ((v4_mode & WRITE_MASK_DATA) && | |
3558fd73 | 2172 | ((!S_ISDIR(ZTOI(zp)->i_mode) && |
428870ff | 2173 | (zp->z_pflags & (ZFS_READONLY | ZFS_IMMUTABLE))) || |
3558fd73 | 2174 | (S_ISDIR(ZTOI(zp)->i_mode) && |
428870ff | 2175 | (zp->z_pflags & ZFS_IMMUTABLE)))) { |
2e528b49 | 2176 | return (SET_ERROR(EPERM)); |
34dc7c2f BB |
2177 | } |
2178 | ||
2179 | if ((v4_mode & (ACE_DELETE | ACE_DELETE_CHILD)) && | |
428870ff | 2180 | (zp->z_pflags & ZFS_NOUNLINK)) { |
2e528b49 | 2181 | return (SET_ERROR(EPERM)); |
34dc7c2f BB |
2182 | } |
2183 | ||
2184 | if (((v4_mode & (ACE_READ_DATA|ACE_EXECUTE)) && | |
428870ff | 2185 | (zp->z_pflags & ZFS_AV_QUARANTINED))) { |
2e528b49 | 2186 | return (SET_ERROR(EACCES)); |
34dc7c2f BB |
2187 | } |
2188 | ||
9babb374 BB |
2189 | return (0); |
2190 | } | |
2191 | ||
2192 | /* | |
2193 | * The primary usage of this function is to loop through all of the | |
2194 | * ACEs in the znode, determining what accesses of interest (AoI) to | |
2195 | * the caller are allowed or denied. The AoI are expressed as bits in | |
2196 | * the working_mode parameter. As each ACE is processed, bits covered | |
2197 | * by that ACE are removed from the working_mode. This removal | |
2198 | * facilitates two things. The first is that when the working mode is | |
2199 | * empty (= 0), we know we've looked at all the AoI. The second is | |
2200 | * that the ACE interpretation rules don't allow a later ACE to undo | |
2201 | * something granted or denied by an earlier ACE. Removing the | |
2202 | * discovered access or denial enforces this rule. At the end of | |
2203 | * processing the ACEs, all AoI that were found to be denied are | |
2204 | * placed into the working_mode, giving the caller a mask of denied | |
2205 | * accesses. Returns: | |
2206 | * 0 if all AoI granted | |
2207 | * EACCESS if the denied mask is non-zero | |
2208 | * other error if abnormal failure (e.g., IO error) | |
2209 | * | |
2210 | * A secondary usage of the function is to determine if any of the | |
2211 | * AoI are granted. If an ACE grants any access in | |
2212 | * the working_mode, we immediately short circuit out of the function. | |
2213 | * This mode is chosen by setting anyaccess to B_TRUE. The | |
2214 | * working_mode is not a denied access mask upon exit if the function | |
2215 | * is used in this manner. | |
2216 | */ | |
2217 | static int | |
2218 | zfs_zaccess_aces_check(znode_t *zp, uint32_t *working_mode, | |
2219 | boolean_t anyaccess, cred_t *cr) | |
2220 | { | |
0037b49e | 2221 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
9babb374 BB |
2222 | zfs_acl_t *aclp; |
2223 | int error; | |
2224 | uid_t uid = crgetuid(cr); | |
3558fd73 | 2225 | uint64_t who; |
9babb374 BB |
2226 | uint16_t type, iflags; |
2227 | uint16_t entry_type; | |
2228 | uint32_t access_mask; | |
2229 | uint32_t deny_mask = 0; | |
2230 | zfs_ace_hdr_t *acep = NULL; | |
2231 | boolean_t checkit; | |
572e2857 BB |
2232 | uid_t gowner; |
2233 | uid_t fowner; | |
2234 | ||
2235 | zfs_fuid_map_ids(zp, cr, &fowner, &gowner); | |
34dc7c2f BB |
2236 | |
2237 | mutex_enter(&zp->z_acl_lock); | |
2238 | ||
572e2857 | 2239 | error = zfs_acl_node_read(zp, B_FALSE, &aclp, B_FALSE); |
34dc7c2f BB |
2240 | if (error != 0) { |
2241 | mutex_exit(&zp->z_acl_lock); | |
2242 | return (error); | |
2243 | } | |
2244 | ||
428870ff BB |
2245 | ASSERT(zp->z_acl_cached); |
2246 | ||
149e873a BB |
2247 | while ((acep = zfs_acl_next_ace(aclp, acep, &who, &access_mask, |
2248 | &iflags, &type))) { | |
9babb374 | 2249 | uint32_t mask_matched; |
34dc7c2f | 2250 | |
b128c09f BB |
2251 | if (!zfs_acl_valid_ace_type(type, iflags)) |
2252 | continue; | |
2253 | ||
3558fd73 BB |
2254 | if (S_ISDIR(ZTOI(zp)->i_mode) && |
2255 | (iflags & ACE_INHERIT_ONLY_ACE)) | |
34dc7c2f BB |
2256 | continue; |
2257 | ||
9babb374 BB |
2258 | /* Skip ACE if it does not affect any AoI */ |
2259 | mask_matched = (access_mask & *working_mode); | |
2260 | if (!mask_matched) | |
2261 | continue; | |
2262 | ||
34dc7c2f BB |
2263 | entry_type = (iflags & ACE_TYPE_FLAGS); |
2264 | ||
2265 | checkit = B_FALSE; | |
2266 | ||
2267 | switch (entry_type) { | |
2268 | case ACE_OWNER: | |
572e2857 | 2269 | if (uid == fowner) |
34dc7c2f BB |
2270 | checkit = B_TRUE; |
2271 | break; | |
2272 | case OWNING_GROUP: | |
2273 | who = gowner; | |
2274 | /*FALLTHROUGH*/ | |
2275 | case ACE_IDENTIFIER_GROUP: | |
0037b49e | 2276 | checkit = zfs_groupmember(zfsvfs, who, cr); |
34dc7c2f BB |
2277 | break; |
2278 | case ACE_EVERYONE: | |
2279 | checkit = B_TRUE; | |
2280 | break; | |
2281 | ||
2282 | /* USER Entry */ | |
2283 | default: | |
2284 | if (entry_type == 0) { | |
2285 | uid_t newid; | |
2286 | ||
0037b49e | 2287 | newid = zfs_fuid_map_id(zfsvfs, who, cr, |
34dc7c2f BB |
2288 | ZFS_ACE_USER); |
2289 | if (newid != IDMAP_WK_CREATOR_OWNER_UID && | |
2290 | uid == newid) | |
2291 | checkit = B_TRUE; | |
2292 | break; | |
2293 | } else { | |
34dc7c2f | 2294 | mutex_exit(&zp->z_acl_lock); |
2e528b49 | 2295 | return (SET_ERROR(EIO)); |
34dc7c2f BB |
2296 | } |
2297 | } | |
2298 | ||
2299 | if (checkit) { | |
9babb374 BB |
2300 | if (type == DENY) { |
2301 | DTRACE_PROBE3(zfs__ace__denies, | |
2302 | znode_t *, zp, | |
2303 | zfs_ace_hdr_t *, acep, | |
2304 | uint32_t, mask_matched); | |
2305 | deny_mask |= mask_matched; | |
2306 | } else { | |
2307 | DTRACE_PROBE3(zfs__ace__allows, | |
2308 | znode_t *, zp, | |
2309 | zfs_ace_hdr_t *, acep, | |
2310 | uint32_t, mask_matched); | |
2311 | if (anyaccess) { | |
2312 | mutex_exit(&zp->z_acl_lock); | |
9babb374 BB |
2313 | return (0); |
2314 | } | |
34dc7c2f | 2315 | } |
9babb374 | 2316 | *working_mode &= ~mask_matched; |
34dc7c2f BB |
2317 | } |
2318 | ||
2319 | /* Are we done? */ | |
2320 | if (*working_mode == 0) | |
2321 | break; | |
2322 | } | |
2323 | ||
2324 | mutex_exit(&zp->z_acl_lock); | |
34dc7c2f BB |
2325 | |
2326 | /* Put the found 'denies' back on the working mode */ | |
b128c09f BB |
2327 | if (deny_mask) { |
2328 | *working_mode |= deny_mask; | |
2e528b49 | 2329 | return (SET_ERROR(EACCES)); |
b128c09f BB |
2330 | } else if (*working_mode) { |
2331 | return (-1); | |
2332 | } | |
34dc7c2f BB |
2333 | |
2334 | return (0); | |
2335 | } | |
2336 | ||
9babb374 BB |
2337 | /* |
2338 | * Return true if any access whatsoever granted, we don't actually | |
2339 | * care what access is granted. | |
2340 | */ | |
2341 | boolean_t | |
2342 | zfs_has_access(znode_t *zp, cred_t *cr) | |
2343 | { | |
2344 | uint32_t have = ACE_ALL_PERMS; | |
2345 | ||
2346 | if (zfs_zaccess_aces_check(zp, &have, B_TRUE, cr) != 0) { | |
572e2857 BB |
2347 | uid_t owner; |
2348 | ||
2c6abf15 NB |
2349 | owner = zfs_fuid_map_id(ZTOZSB(zp), |
2350 | KUID_TO_SUID(ZTOI(zp)->i_uid), cr, ZFS_OWNER); | |
3558fd73 | 2351 | return (secpolicy_vnode_any_access(cr, ZTOI(zp), owner) == 0); |
9babb374 BB |
2352 | } |
2353 | return (B_TRUE); | |
2354 | } | |
2355 | ||
2356 | static int | |
2357 | zfs_zaccess_common(znode_t *zp, uint32_t v4_mode, uint32_t *working_mode, | |
2358 | boolean_t *check_privs, boolean_t skipaclchk, cred_t *cr) | |
2359 | { | |
0037b49e | 2360 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
9babb374 BB |
2361 | int err; |
2362 | ||
2363 | *working_mode = v4_mode; | |
2364 | *check_privs = B_TRUE; | |
2365 | ||
2366 | /* | |
2367 | * Short circuit empty requests | |
2368 | */ | |
0037b49e | 2369 | if (v4_mode == 0 || zfsvfs->z_replay) { |
9babb374 BB |
2370 | *working_mode = 0; |
2371 | return (0); | |
2372 | } | |
2373 | ||
2374 | if ((err = zfs_zaccess_dataset_check(zp, v4_mode)) != 0) { | |
2375 | *check_privs = B_FALSE; | |
2376 | return (err); | |
2377 | } | |
2378 | ||
2379 | /* | |
2380 | * The caller requested that the ACL check be skipped. This | |
2381 | * would only happen if the caller checked VOP_ACCESS() with a | |
2382 | * 32 bit ACE mask and already had the appropriate permissions. | |
2383 | */ | |
2384 | if (skipaclchk) { | |
2385 | *working_mode = 0; | |
2386 | return (0); | |
2387 | } | |
2388 | ||
2389 | return (zfs_zaccess_aces_check(zp, working_mode, B_FALSE, cr)); | |
2390 | } | |
2391 | ||
34dc7c2f BB |
2392 | static int |
2393 | zfs_zaccess_append(znode_t *zp, uint32_t *working_mode, boolean_t *check_privs, | |
2394 | cred_t *cr) | |
2395 | { | |
2396 | if (*working_mode != ACE_WRITE_DATA) | |
2e528b49 | 2397 | return (SET_ERROR(EACCES)); |
34dc7c2f BB |
2398 | |
2399 | return (zfs_zaccess_common(zp, ACE_APPEND_DATA, working_mode, | |
2400 | check_privs, B_FALSE, cr)); | |
2401 | } | |
2402 | ||
45d1cae3 BB |
2403 | int |
2404 | zfs_fastaccesschk_execute(znode_t *zdp, cred_t *cr) | |
2405 | { | |
2406 | boolean_t owner = B_FALSE; | |
2407 | boolean_t groupmbr = B_FALSE; | |
2408 | boolean_t is_attr; | |
45d1cae3 BB |
2409 | uid_t uid = crgetuid(cr); |
2410 | int error; | |
2411 | ||
428870ff | 2412 | if (zdp->z_pflags & ZFS_AV_QUARANTINED) |
2e528b49 | 2413 | return (SET_ERROR(EACCES)); |
45d1cae3 | 2414 | |
428870ff | 2415 | is_attr = ((zdp->z_pflags & ZFS_XATTR) && |
3558fd73 | 2416 | (S_ISDIR(ZTOI(zdp)->i_mode))); |
45d1cae3 BB |
2417 | if (is_attr) |
2418 | goto slow; | |
2419 | ||
428870ff | 2420 | |
45d1cae3 BB |
2421 | mutex_enter(&zdp->z_acl_lock); |
2422 | ||
428870ff | 2423 | if (zdp->z_pflags & ZFS_NO_EXECS_DENIED) { |
45d1cae3 BB |
2424 | mutex_exit(&zdp->z_acl_lock); |
2425 | return (0); | |
2426 | } | |
2427 | ||
2c6abf15 NB |
2428 | if (KUID_TO_SUID(ZTOI(zdp)->i_uid) != 0 || |
2429 | KGID_TO_SGID(ZTOI(zdp)->i_gid) != 0) { | |
45d1cae3 BB |
2430 | mutex_exit(&zdp->z_acl_lock); |
2431 | goto slow; | |
2432 | } | |
2433 | ||
2c6abf15 | 2434 | if (uid == KUID_TO_SUID(ZTOI(zdp)->i_uid)) { |
45d1cae3 | 2435 | owner = B_TRUE; |
428870ff | 2436 | if (zdp->z_mode & S_IXUSR) { |
45d1cae3 BB |
2437 | mutex_exit(&zdp->z_acl_lock); |
2438 | return (0); | |
2439 | } else { | |
2440 | mutex_exit(&zdp->z_acl_lock); | |
2441 | goto slow; | |
2442 | } | |
2443 | } | |
2c6abf15 | 2444 | if (groupmember(KGID_TO_SGID(ZTOI(zdp)->i_gid), cr)) { |
45d1cae3 | 2445 | groupmbr = B_TRUE; |
428870ff | 2446 | if (zdp->z_mode & S_IXGRP) { |
45d1cae3 BB |
2447 | mutex_exit(&zdp->z_acl_lock); |
2448 | return (0); | |
2449 | } else { | |
2450 | mutex_exit(&zdp->z_acl_lock); | |
2451 | goto slow; | |
2452 | } | |
2453 | } | |
2454 | if (!owner && !groupmbr) { | |
428870ff | 2455 | if (zdp->z_mode & S_IXOTH) { |
45d1cae3 BB |
2456 | mutex_exit(&zdp->z_acl_lock); |
2457 | return (0); | |
2458 | } | |
2459 | } | |
2460 | ||
2461 | mutex_exit(&zdp->z_acl_lock); | |
2462 | ||
2463 | slow: | |
2464 | DTRACE_PROBE(zfs__fastpath__execute__access__miss); | |
3558fd73 | 2465 | ZFS_ENTER(ZTOZSB(zdp)); |
45d1cae3 | 2466 | error = zfs_zaccess(zdp, ACE_EXECUTE, 0, B_FALSE, cr); |
3558fd73 | 2467 | ZFS_EXIT(ZTOZSB(zdp)); |
45d1cae3 BB |
2468 | return (error); |
2469 | } | |
2470 | ||
34dc7c2f | 2471 | /* |
428870ff | 2472 | * Determine whether Access should be granted/denied. |
d3cc8b15 | 2473 | * |
428870ff BB |
2474 | * The least priv subsytem is always consulted as a basic privilege |
2475 | * can define any form of access. | |
34dc7c2f BB |
2476 | */ |
2477 | int | |
2478 | zfs_zaccess(znode_t *zp, int mode, int flags, boolean_t skipaclchk, cred_t *cr) | |
2479 | { | |
2480 | uint32_t working_mode; | |
2481 | int error; | |
31b6111f CC |
2482 | int is_attr; |
2483 | boolean_t check_privs; | |
2484 | znode_t *xzp; | |
2485 | znode_t *check_zp = zp; | |
428870ff | 2486 | mode_t needed_bits; |
572e2857 | 2487 | uid_t owner; |
34dc7c2f | 2488 | |
31b6111f CC |
2489 | is_attr = ((zp->z_pflags & ZFS_XATTR) && S_ISDIR(ZTOI(zp)->i_mode)); |
2490 | ||
34dc7c2f BB |
2491 | /* |
2492 | * If attribute then validate against base file | |
2493 | */ | |
31b6111f | 2494 | if (is_attr) { |
31b6111f | 2495 | if ((error = zfs_zget(ZTOZSB(zp), |
98701490 | 2496 | zp->z_xattr_parent, &xzp)) != 0) { |
31b6111f | 2497 | return (error); |
e89260a1 | 2498 | } |
34dc7c2f | 2499 | |
31b6111f CC |
2500 | check_zp = xzp; |
2501 | ||
34dc7c2f BB |
2502 | /* |
2503 | * fixup mode to map to xattr perms | |
2504 | */ | |
2505 | ||
2506 | if (mode & (ACE_WRITE_DATA|ACE_APPEND_DATA)) { | |
2507 | mode &= ~(ACE_WRITE_DATA|ACE_APPEND_DATA); | |
2508 | mode |= ACE_WRITE_NAMED_ATTRS; | |
2509 | } | |
2510 | ||
2511 | if (mode & (ACE_READ_DATA|ACE_EXECUTE)) { | |
2512 | mode &= ~(ACE_READ_DATA|ACE_EXECUTE); | |
2513 | mode |= ACE_READ_NAMED_ATTRS; | |
2514 | } | |
2515 | } | |
2516 | ||
2c6abf15 NB |
2517 | owner = zfs_fuid_map_id(ZTOZSB(zp), KUID_TO_SUID(ZTOI(zp)->i_uid), |
2518 | cr, ZFS_OWNER); | |
428870ff | 2519 | /* |
3558fd73 BB |
2520 | * Map the bits required to the standard inode flags |
2521 | * S_IRUSR|S_IWUSR|S_IXUSR in the needed_bits. Map the bits | |
2522 | * mapped by working_mode (currently missing) in missing_bits. | |
428870ff BB |
2523 | * Call secpolicy_vnode_access2() with (needed_bits & ~checkmode), |
2524 | * needed_bits. | |
2525 | */ | |
2526 | needed_bits = 0; | |
2527 | ||
2528 | working_mode = mode; | |
2529 | if ((working_mode & (ACE_READ_ACL|ACE_READ_ATTRIBUTES)) && | |
572e2857 | 2530 | owner == crgetuid(cr)) |
428870ff BB |
2531 | working_mode &= ~(ACE_READ_ACL|ACE_READ_ATTRIBUTES); |
2532 | ||
2533 | if (working_mode & (ACE_READ_DATA|ACE_READ_NAMED_ATTRS| | |
2534 | ACE_READ_ACL|ACE_READ_ATTRIBUTES|ACE_SYNCHRONIZE)) | |
3558fd73 | 2535 | needed_bits |= S_IRUSR; |
428870ff BB |
2536 | if (working_mode & (ACE_WRITE_DATA|ACE_WRITE_NAMED_ATTRS| |
2537 | ACE_APPEND_DATA|ACE_WRITE_ATTRIBUTES|ACE_SYNCHRONIZE)) | |
3558fd73 | 2538 | needed_bits |= S_IWUSR; |
428870ff | 2539 | if (working_mode & ACE_EXECUTE) |
3558fd73 | 2540 | needed_bits |= S_IXUSR; |
428870ff | 2541 | |
34dc7c2f BB |
2542 | if ((error = zfs_zaccess_common(check_zp, mode, &working_mode, |
2543 | &check_privs, skipaclchk, cr)) == 0) { | |
31b6111f CC |
2544 | if (is_attr) |
2545 | iput(ZTOI(xzp)); | |
3558fd73 | 2546 | return (secpolicy_vnode_access2(cr, ZTOI(zp), owner, |
428870ff | 2547 | needed_bits, needed_bits)); |
34dc7c2f BB |
2548 | } |
2549 | ||
2550 | if (error && !check_privs) { | |
31b6111f CC |
2551 | if (is_attr) |
2552 | iput(ZTOI(xzp)); | |
34dc7c2f BB |
2553 | return (error); |
2554 | } | |
2555 | ||
2556 | if (error && (flags & V_APPEND)) { | |
2557 | error = zfs_zaccess_append(zp, &working_mode, &check_privs, cr); | |
2558 | } | |
2559 | ||
2560 | if (error && check_privs) { | |
34dc7c2f BB |
2561 | mode_t checkmode = 0; |
2562 | ||
34dc7c2f BB |
2563 | /* |
2564 | * First check for implicit owner permission on | |
2565 | * read_acl/read_attributes | |
2566 | */ | |
2567 | ||
2568 | error = 0; | |
2569 | ASSERT(working_mode != 0); | |
2570 | ||
2571 | if ((working_mode & (ACE_READ_ACL|ACE_READ_ATTRIBUTES) && | |
572e2857 | 2572 | owner == crgetuid(cr))) |
34dc7c2f BB |
2573 | working_mode &= ~(ACE_READ_ACL|ACE_READ_ATTRIBUTES); |
2574 | ||
2575 | if (working_mode & (ACE_READ_DATA|ACE_READ_NAMED_ATTRS| | |
b128c09f | 2576 | ACE_READ_ACL|ACE_READ_ATTRIBUTES|ACE_SYNCHRONIZE)) |
3558fd73 | 2577 | checkmode |= S_IRUSR; |
34dc7c2f | 2578 | if (working_mode & (ACE_WRITE_DATA|ACE_WRITE_NAMED_ATTRS| |
b128c09f | 2579 | ACE_APPEND_DATA|ACE_WRITE_ATTRIBUTES|ACE_SYNCHRONIZE)) |
3558fd73 | 2580 | checkmode |= S_IWUSR; |
34dc7c2f | 2581 | if (working_mode & ACE_EXECUTE) |
3558fd73 | 2582 | checkmode |= S_IXUSR; |
34dc7c2f | 2583 | |
3558fd73 | 2584 | error = secpolicy_vnode_access2(cr, ZTOI(check_zp), owner, |
428870ff | 2585 | needed_bits & ~checkmode, needed_bits); |
34dc7c2f BB |
2586 | |
2587 | if (error == 0 && (working_mode & ACE_WRITE_OWNER)) | |
572e2857 | 2588 | error = secpolicy_vnode_chown(cr, owner); |
34dc7c2f | 2589 | if (error == 0 && (working_mode & ACE_WRITE_ACL)) |
572e2857 | 2590 | error = secpolicy_vnode_setdac(cr, owner); |
34dc7c2f BB |
2591 | |
2592 | if (error == 0 && (working_mode & | |
2593 | (ACE_DELETE|ACE_DELETE_CHILD))) | |
2594 | error = secpolicy_vnode_remove(cr); | |
2595 | ||
b128c09f | 2596 | if (error == 0 && (working_mode & ACE_SYNCHRONIZE)) { |
572e2857 | 2597 | error = secpolicy_vnode_chown(cr, owner); |
b128c09f | 2598 | } |
34dc7c2f BB |
2599 | if (error == 0) { |
2600 | /* | |
2601 | * See if any bits other than those already checked | |
2602 | * for are still present. If so then return EACCES | |
2603 | */ | |
2604 | if (working_mode & ~(ZFS_CHECKED_MASKS)) { | |
2e528b49 | 2605 | error = SET_ERROR(EACCES); |
34dc7c2f BB |
2606 | } |
2607 | } | |
428870ff | 2608 | } else if (error == 0) { |
3558fd73 | 2609 | error = secpolicy_vnode_access2(cr, ZTOI(zp), owner, |
428870ff | 2610 | needed_bits, needed_bits); |
34dc7c2f BB |
2611 | } |
2612 | ||
31b6111f CC |
2613 | if (is_attr) |
2614 | iput(ZTOI(xzp)); | |
2615 | ||
34dc7c2f BB |
2616 | return (error); |
2617 | } | |
2618 | ||
2619 | /* | |
3558fd73 | 2620 | * Translate traditional unix S_IRUSR/S_IWUSR/S_IXUSR mode into |
34dc7c2f BB |
2621 | * native ACL format and call zfs_zaccess() |
2622 | */ | |
2623 | int | |
2624 | zfs_zaccess_rwx(znode_t *zp, mode_t mode, int flags, cred_t *cr) | |
2625 | { | |
2626 | return (zfs_zaccess(zp, zfs_unix_to_v4(mode >> 6), flags, B_FALSE, cr)); | |
2627 | } | |
2628 | ||
2629 | /* | |
2630 | * Access function for secpolicy_vnode_setattr | |
2631 | */ | |
2632 | int | |
2633 | zfs_zaccess_unix(znode_t *zp, mode_t mode, cred_t *cr) | |
2634 | { | |
2635 | int v4_mode = zfs_unix_to_v4(mode >> 6); | |
2636 | ||
2637 | return (zfs_zaccess(zp, v4_mode, 0, B_FALSE, cr)); | |
2638 | } | |
2639 | ||
2640 | static int | |
2641 | zfs_delete_final_check(znode_t *zp, znode_t *dzp, | |
428870ff | 2642 | mode_t available_perms, cred_t *cr) |
34dc7c2f BB |
2643 | { |
2644 | int error; | |
572e2857 BB |
2645 | uid_t downer; |
2646 | ||
2c6abf15 NB |
2647 | downer = zfs_fuid_map_id(ZTOZSB(dzp), KUID_TO_SUID(ZTOI(dzp)->i_uid), |
2648 | cr, ZFS_OWNER); | |
34dc7c2f | 2649 | |
3558fd73 BB |
2650 | error = secpolicy_vnode_access2(cr, ZTOI(dzp), |
2651 | downer, available_perms, S_IWUSR|S_IXUSR); | |
34dc7c2f BB |
2652 | |
2653 | if (error == 0) | |
2654 | error = zfs_sticky_remove_access(dzp, zp, cr); | |
2655 | ||
2656 | return (error); | |
2657 | } | |
2658 | ||
2659 | /* | |
2660 | * Determine whether Access should be granted/deny, without | |
2661 | * consulting least priv subsystem. | |
2662 | * | |
34dc7c2f BB |
2663 | * The following chart is the recommended NFSv4 enforcement for |
2664 | * ability to delete an object. | |
2665 | * | |
2666 | * ------------------------------------------------------- | |
2667 | * | Parent Dir | Target Object Permissions | | |
2668 | * | permissions | | | |
2669 | * ------------------------------------------------------- | |
2670 | * | | ACL Allows | ACL Denies| Delete | | |
2671 | * | | Delete | Delete | unspecified| | |
2672 | * ------------------------------------------------------- | |
2673 | * | ACL Allows | Permit | Permit | Permit | | |
2674 | * | DELETE_CHILD | | | |
2675 | * ------------------------------------------------------- | |
2676 | * | ACL Denies | Permit | Deny | Deny | | |
2677 | * | DELETE_CHILD | | | | | |
2678 | * ------------------------------------------------------- | |
2679 | * | ACL specifies | | | | | |
2680 | * | only allow | Permit | Permit | Permit | | |
2681 | * | write and | | | | | |
2682 | * | execute | | | | | |
2683 | * ------------------------------------------------------- | |
2684 | * | ACL denies | | | | | |
2685 | * | write and | Permit | Deny | Deny | | |
2686 | * | execute | | | | | |
2687 | * ------------------------------------------------------- | |
2688 | * ^ | |
2689 | * | | |
2690 | * No search privilege, can't even look up file? | |
2691 | * | |
2692 | */ | |
2693 | int | |
2694 | zfs_zaccess_delete(znode_t *dzp, znode_t *zp, cred_t *cr) | |
2695 | { | |
2696 | uint32_t dzp_working_mode = 0; | |
2697 | uint32_t zp_working_mode = 0; | |
2698 | int dzp_error, zp_error; | |
428870ff | 2699 | mode_t available_perms; |
34dc7c2f BB |
2700 | boolean_t dzpcheck_privs = B_TRUE; |
2701 | boolean_t zpcheck_privs = B_TRUE; | |
2702 | ||
2703 | /* | |
2704 | * We want specific DELETE permissions to | |
2705 | * take precedence over WRITE/EXECUTE. We don't | |
2706 | * want an ACL such as this to mess us up. | |
2707 | * user:joe:write_data:deny,user:joe:delete:allow | |
2708 | * | |
2709 | * However, deny permissions may ultimately be overridden | |
2710 | * by secpolicy_vnode_access(). | |
2711 | * | |
2712 | * We will ask for all of the necessary permissions and then | |
2713 | * look at the working modes from the directory and target object | |
2714 | * to determine what was found. | |
2715 | */ | |
2716 | ||
428870ff | 2717 | if (zp->z_pflags & (ZFS_IMMUTABLE | ZFS_NOUNLINK)) |
2e528b49 | 2718 | return (SET_ERROR(EPERM)); |
34dc7c2f BB |
2719 | |
2720 | /* | |
b128c09f | 2721 | * First row |
34dc7c2f BB |
2722 | * If the directory permissions allow the delete, we are done. |
2723 | */ | |
b128c09f | 2724 | if ((dzp_error = zfs_zaccess_common(dzp, ACE_DELETE_CHILD, |
34dc7c2f BB |
2725 | &dzp_working_mode, &dzpcheck_privs, B_FALSE, cr)) == 0) |
2726 | return (0); | |
2727 | ||
2728 | /* | |
2729 | * If target object has delete permission then we are done | |
2730 | */ | |
2731 | if ((zp_error = zfs_zaccess_common(zp, ACE_DELETE, &zp_working_mode, | |
2732 | &zpcheck_privs, B_FALSE, cr)) == 0) | |
2733 | return (0); | |
2734 | ||
b128c09f BB |
2735 | ASSERT(dzp_error && zp_error); |
2736 | ||
34dc7c2f BB |
2737 | if (!dzpcheck_privs) |
2738 | return (dzp_error); | |
b128c09f | 2739 | if (!zpcheck_privs) |
34dc7c2f BB |
2740 | return (zp_error); |
2741 | ||
34dc7c2f BB |
2742 | /* |
2743 | * Second row | |
b128c09f BB |
2744 | * |
2745 | * If directory returns EACCES then delete_child was denied | |
2746 | * due to deny delete_child. In this case send the request through | |
2747 | * secpolicy_vnode_remove(). We don't use zfs_delete_final_check() | |
2748 | * since that *could* allow the delete based on write/execute permission | |
2749 | * and we want delete permissions to override write/execute. | |
34dc7c2f BB |
2750 | */ |
2751 | ||
34dc7c2f | 2752 | if (dzp_error == EACCES) |
b128c09f | 2753 | return (secpolicy_vnode_remove(cr)); |
34dc7c2f BB |
2754 | |
2755 | /* | |
2756 | * Third Row | |
2757 | * only need to see if we have write/execute on directory. | |
2758 | */ | |
2759 | ||
428870ff BB |
2760 | dzp_error = zfs_zaccess_common(dzp, ACE_EXECUTE|ACE_WRITE_DATA, |
2761 | &dzp_working_mode, &dzpcheck_privs, B_FALSE, cr); | |
34dc7c2f | 2762 | |
428870ff | 2763 | if (dzp_error != 0 && !dzpcheck_privs) |
b128c09f BB |
2764 | return (dzp_error); |
2765 | ||
34dc7c2f | 2766 | /* |
b128c09f | 2767 | * Fourth row |
34dc7c2f BB |
2768 | */ |
2769 | ||
3558fd73 BB |
2770 | available_perms = (dzp_working_mode & ACE_WRITE_DATA) ? 0 : S_IWUSR; |
2771 | available_perms |= (dzp_working_mode & ACE_EXECUTE) ? 0 : S_IXUSR; | |
34dc7c2f | 2772 | |
428870ff | 2773 | return (zfs_delete_final_check(zp, dzp, available_perms, cr)); |
b128c09f | 2774 | |
34dc7c2f BB |
2775 | } |
2776 | ||
2777 | int | |
2778 | zfs_zaccess_rename(znode_t *sdzp, znode_t *szp, znode_t *tdzp, | |
2779 | znode_t *tzp, cred_t *cr) | |
2780 | { | |
2781 | int add_perm; | |
2782 | int error; | |
2783 | ||
428870ff | 2784 | if (szp->z_pflags & ZFS_AV_QUARANTINED) |
2e528b49 | 2785 | return (SET_ERROR(EACCES)); |
34dc7c2f | 2786 | |
3558fd73 | 2787 | add_perm = S_ISDIR(ZTOI(szp)->i_mode) ? |
34dc7c2f BB |
2788 | ACE_ADD_SUBDIRECTORY : ACE_ADD_FILE; |
2789 | ||
2790 | /* | |
2791 | * Rename permissions are combination of delete permission + | |
2792 | * add file/subdir permission. | |
2793 | */ | |
2794 | ||
2795 | /* | |
2796 | * first make sure we do the delete portion. | |
2797 | * | |
2798 | * If that succeeds then check for add_file/add_subdir permissions | |
2799 | */ | |
2800 | ||
149e873a | 2801 | if ((error = zfs_zaccess_delete(sdzp, szp, cr))) |
34dc7c2f BB |
2802 | return (error); |
2803 | ||
2804 | /* | |
2805 | * If we have a tzp, see if we can delete it? | |
2806 | */ | |
2807 | if (tzp) { | |
149e873a | 2808 | if ((error = zfs_zaccess_delete(tdzp, tzp, cr))) |
34dc7c2f BB |
2809 | return (error); |
2810 | } | |
2811 | ||
2812 | /* | |
2813 | * Now check for add permissions | |
2814 | */ | |
2815 | error = zfs_zaccess(tdzp, add_perm, 0, B_FALSE, cr); | |
2816 | ||
2817 | return (error); | |
2818 | } |