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cc5f931c 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 | /* | |
22 | * Copyright (c) 2011, Lawrence Livermore National Security, LLC. | |
23 | * | |
24 | * Extended attributes (xattr) on Solaris are implemented as files | |
25 | * which exist in a hidden xattr directory. These extended attributes | |
26 | * can be accessed using the attropen() system call which opens | |
27 | * the extended attribute. It can then be manipulated just like | |
28 | * a standard file descriptor. This has a couple advantages such | |
29 | * as practically no size limit on the file, and the extended | |
30 | * attributes permissions may differ from those of the parent file. | |
31 | * This interface is really quite clever, but it's also completely | |
82a37189 BB |
32 | * different than what is supported on Linux. It also comes with a |
33 | * steep performance penalty when accessing small xattrs because they | |
34 | * are not stored with the parent file. | |
cc5f931c BB |
35 | * |
36 | * Under Linux extended attributes are manipulated by the system | |
37 | * calls getxattr(2), setxattr(2), and listxattr(2). They consider | |
38 | * extended attributes to be name/value pairs where the name is a | |
39 | * NULL terminated string. The name must also include one of the | |
82a37189 | 40 | * following namespace prefixes: |
cc5f931c BB |
41 | * |
42 | * user - No restrictions and is available to user applications. | |
43 | * trusted - Restricted to kernel and root (CAP_SYS_ADMIN) use. | |
44 | * system - Used for access control lists (system.nfs4_acl, etc). | |
45 | * security - Used by SELinux to store a files security context. | |
46 | * | |
82a37189 BB |
47 | * The value under Linux to limited to 65536 bytes of binary data. |
48 | * In practice, individual xattrs tend to be much smaller than this | |
49 | * and are typically less than 100 bytes. A good example of this | |
50 | * are the security.selinux xattrs which are less than 100 bytes and | |
51 | * exist for every file when xattr labeling is enabled. | |
cc5f931c | 52 | * |
82a37189 BB |
53 | * The Linux xattr implemenation has been written to take advantage of |
54 | * this typical usage. When the dataset property 'xattr=sa' is set, | |
55 | * then xattrs will be preferentially stored as System Attributes (SA). | |
56 | * This allows tiny xattrs (~100 bytes) to be stored with the dnode and | |
57 | * up to 64k of xattrs to be stored in the spill block. If additional | |
58 | * xattr space is required, which is unlikely under Linux, they will | |
59 | * be stored using the traditional directory approach. | |
cc5f931c | 60 | * |
82a37189 BB |
61 | * This optimization results in roughly a 3x performance improvement |
62 | * when accessing xattrs because it avoids the need to perform a seek | |
63 | * for every xattr value. When multiple xattrs are stored per-file | |
64 | * the performance improvements are even greater because all of the | |
65 | * xattrs stored in the spill block will be cached. | |
66 | * | |
67 | * However, by default SA based xattrs are disabled in the Linux port | |
68 | * to maximize compatibility with other implementations. If you do | |
69 | * enable SA based xattrs then they will not be visible on platforms | |
70 | * which do not support this feature. | |
71 | * | |
72 | * NOTE: One additional consequence of the xattr directory implementation | |
73 | * is that when an extended attribute is manipulated an inode is created. | |
74 | * This inode will exist in the Linux inode cache but there will be no | |
75 | * associated entry in the dentry cache which references it. This is | |
76 | * safe but it may result in some confusion. Enabling SA based xattrs | |
77 | * largely avoids the issue except in the overflow case. | |
cc5f931c BB |
78 | */ |
79 | ||
cc5f931c BB |
80 | #include <sys/zfs_vfsops.h> |
81 | #include <sys/zfs_vnops.h> | |
82 | #include <sys/zfs_znode.h> | |
0f37d0c8 | 83 | #include <sys/zap.h> |
cc5f931c BB |
84 | #include <sys/vfs.h> |
85 | #include <sys/zpl.h> | |
86 | ||
87 | typedef struct xattr_filldir { | |
88 | size_t size; | |
89 | size_t offset; | |
90 | char *buf; | |
91 | struct inode *inode; | |
92 | } xattr_filldir_t; | |
93 | ||
94 | static int | |
0f37d0c8 | 95 | zpl_xattr_filldir(xattr_filldir_t *xf, const char *name, int name_len) |
cc5f931c | 96 | { |
cc5f931c | 97 | if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) |
2cf7f52b | 98 | if (!(ITOZSB(xf->inode)->z_flags & ZSB_XATTR)) |
cc5f931c BB |
99 | return (0); |
100 | ||
101 | if (!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN)) | |
102 | if (!capable(CAP_SYS_ADMIN)) | |
103 | return (0); | |
104 | ||
105 | /* When xf->buf is NULL only calculate the required size. */ | |
106 | if (xf->buf) { | |
107 | if (xf->offset + name_len + 1 > xf->size) | |
108 | return (-ERANGE); | |
109 | ||
110 | memcpy(xf->buf + xf->offset, name, name_len); | |
111 | xf->buf[xf->offset + name_len] = '\0'; | |
112 | } | |
113 | ||
114 | xf->offset += (name_len + 1); | |
115 | ||
116 | return (0); | |
117 | } | |
118 | ||
0f37d0c8 RY |
119 | /* |
120 | * Read as many directory entry names as will fit in to the provided buffer, | |
121 | * or when no buffer is provided calculate the required buffer size. | |
122 | */ | |
123 | int | |
124 | zpl_xattr_readdir(struct inode *dxip, xattr_filldir_t *xf) | |
125 | { | |
126 | zap_cursor_t zc; | |
127 | zap_attribute_t zap; | |
128 | int error; | |
129 | ||
130 | zap_cursor_init(&zc, ITOZSB(dxip)->z_os, ITOZ(dxip)->z_id); | |
131 | ||
132 | while ((error = -zap_cursor_retrieve(&zc, &zap)) == 0) { | |
133 | ||
134 | if (zap.za_integer_length != 8 || zap.za_num_integers != 1) { | |
135 | error = -ENXIO; | |
136 | break; | |
137 | } | |
138 | ||
139 | error = zpl_xattr_filldir(xf, zap.za_name, strlen(zap.za_name)); | |
140 | if (error) | |
141 | break; | |
142 | ||
143 | zap_cursor_advance(&zc); | |
144 | } | |
145 | ||
146 | zap_cursor_fini(&zc); | |
147 | ||
148 | if (error == -ENOENT) | |
149 | error = 0; | |
150 | ||
151 | return (error); | |
152 | } | |
153 | ||
82a37189 BB |
154 | static ssize_t |
155 | zpl_xattr_list_dir(xattr_filldir_t *xf, cred_t *cr) | |
cc5f931c | 156 | { |
82a37189 | 157 | struct inode *ip = xf->inode; |
cc5f931c | 158 | struct inode *dxip = NULL; |
cc5f931c | 159 | int error; |
cc5f931c BB |
160 | |
161 | /* Lookup the xattr directory */ | |
162 | error = -zfs_lookup(ip, NULL, &dxip, LOOKUP_XATTR, cr, NULL, NULL); | |
163 | if (error) { | |
164 | if (error == -ENOENT) | |
165 | error = 0; | |
166 | ||
82a37189 | 167 | return (error); |
cc5f931c BB |
168 | } |
169 | ||
0f37d0c8 | 170 | error = zpl_xattr_readdir(dxip, xf); |
82a37189 BB |
171 | iput(dxip); |
172 | ||
173 | return (error); | |
174 | } | |
175 | ||
176 | static ssize_t | |
177 | zpl_xattr_list_sa(xattr_filldir_t *xf) | |
178 | { | |
179 | znode_t *zp = ITOZ(xf->inode); | |
180 | nvpair_t *nvp = NULL; | |
181 | int error = 0; | |
182 | ||
183 | mutex_enter(&zp->z_lock); | |
184 | if (zp->z_xattr_cached == NULL) | |
185 | error = -zfs_sa_get_xattr(zp); | |
186 | mutex_exit(&zp->z_lock); | |
187 | ||
188 | if (error) | |
189 | return (error); | |
190 | ||
191 | ASSERT(zp->z_xattr_cached); | |
192 | ||
193 | while ((nvp = nvlist_next_nvpair(zp->z_xattr_cached, nvp)) != NULL) { | |
194 | ASSERT3U(nvpair_type(nvp), ==, DATA_TYPE_BYTE_ARRAY); | |
195 | ||
0f37d0c8 RY |
196 | error = zpl_xattr_filldir(xf, nvpair_name(nvp), |
197 | strlen(nvpair_name(nvp))); | |
82a37189 BB |
198 | if (error) |
199 | return (error); | |
200 | } | |
201 | ||
202 | return (0); | |
203 | } | |
204 | ||
205 | ssize_t | |
206 | zpl_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size) | |
207 | { | |
208 | znode_t *zp = ITOZ(dentry->d_inode); | |
209 | zfs_sb_t *zsb = ZTOZSB(zp); | |
210 | xattr_filldir_t xf = { buffer_size, 0, buffer, dentry->d_inode }; | |
211 | cred_t *cr = CRED(); | |
212 | int error = 0; | |
213 | ||
214 | crhold(cr); | |
215 | rw_enter(&zp->z_xattr_lock, RW_READER); | |
216 | ||
217 | if (zsb->z_use_sa && zp->z_is_sa) { | |
218 | error = zpl_xattr_list_sa(&xf); | |
219 | if (error) | |
220 | goto out; | |
221 | } | |
222 | ||
223 | error = zpl_xattr_list_dir(&xf, cr); | |
cc5f931c BB |
224 | if (error) |
225 | goto out; | |
226 | ||
227 | error = xf.offset; | |
228 | out: | |
cc5f931c | 229 | |
82a37189 | 230 | rw_exit(&zp->z_xattr_lock); |
81e97e21 | 231 | crfree(cr); |
cc5f931c BB |
232 | |
233 | return (error); | |
234 | } | |
235 | ||
236 | static int | |
82a37189 BB |
237 | zpl_xattr_get_dir(struct inode *ip, const char *name, void *value, |
238 | size_t size, cred_t *cr) | |
cc5f931c BB |
239 | { |
240 | struct inode *dxip = NULL; | |
241 | struct inode *xip = NULL; | |
cc5f931c BB |
242 | int error; |
243 | ||
cc5f931c BB |
244 | /* Lookup the xattr directory */ |
245 | error = -zfs_lookup(ip, NULL, &dxip, LOOKUP_XATTR, cr, NULL, NULL); | |
246 | if (error) | |
247 | goto out; | |
248 | ||
249 | /* Lookup a specific xattr name in the directory */ | |
250 | error = -zfs_lookup(dxip, (char *)name, &xip, 0, cr, NULL, NULL); | |
251 | if (error) | |
252 | goto out; | |
253 | ||
254 | if (!size) { | |
255 | error = i_size_read(xip); | |
256 | goto out; | |
257 | } | |
258 | ||
f7064211 BB |
259 | if (size < i_size_read(xip)) { |
260 | error = -ERANGE; | |
261 | goto out; | |
262 | } | |
263 | ||
82a37189 | 264 | error = zpl_read_common(xip, value, size, 0, UIO_SYSSPACE, 0, cr); |
cc5f931c BB |
265 | out: |
266 | if (xip) | |
267 | iput(xip); | |
268 | ||
269 | if (dxip) | |
270 | iput(dxip); | |
271 | ||
82a37189 BB |
272 | return (error); |
273 | } | |
274 | ||
275 | static int | |
276 | zpl_xattr_get_sa(struct inode *ip, const char *name, void *value, size_t size) | |
277 | { | |
278 | znode_t *zp = ITOZ(ip); | |
279 | uchar_t *nv_value; | |
280 | uint_t nv_size; | |
281 | int error = 0; | |
cc5f931c | 282 | |
82a37189 BB |
283 | ASSERT(RW_LOCK_HELD(&zp->z_xattr_lock)); |
284 | ||
285 | mutex_enter(&zp->z_lock); | |
286 | if (zp->z_xattr_cached == NULL) | |
287 | error = -zfs_sa_get_xattr(zp); | |
288 | mutex_exit(&zp->z_lock); | |
289 | ||
290 | if (error) | |
291 | return (error); | |
292 | ||
293 | ASSERT(zp->z_xattr_cached); | |
294 | error = -nvlist_lookup_byte_array(zp->z_xattr_cached, name, | |
295 | &nv_value, &nv_size); | |
296 | if (error) | |
297 | return (error); | |
298 | ||
299 | if (!size) | |
300 | return (nv_size); | |
301 | ||
f7064211 BB |
302 | if (size < nv_size) |
303 | return (-ERANGE); | |
304 | ||
305 | memcpy(value, nv_value, nv_size); | |
82a37189 | 306 | |
f7064211 | 307 | return (nv_size); |
82a37189 BB |
308 | } |
309 | ||
310 | static int | |
311 | __zpl_xattr_get(struct inode *ip, const char *name, void *value, size_t size, | |
312 | cred_t *cr) | |
313 | { | |
314 | znode_t *zp = ITOZ(ip); | |
315 | zfs_sb_t *zsb = ZTOZSB(zp); | |
316 | int error; | |
317 | ||
318 | ASSERT(RW_LOCK_HELD(&zp->z_xattr_lock)); | |
319 | ||
320 | if (zsb->z_use_sa && zp->z_is_sa) { | |
321 | error = zpl_xattr_get_sa(ip, name, value, size); | |
0377189b | 322 | if (error != -ENOENT) |
82a37189 BB |
323 | goto out; |
324 | } | |
325 | ||
326 | error = zpl_xattr_get_dir(ip, name, value, size, cr); | |
327 | out: | |
cc5f931c BB |
328 | if (error == -ENOENT) |
329 | error = -ENODATA; | |
330 | ||
331 | return (error); | |
332 | } | |
333 | ||
334 | static int | |
82a37189 BB |
335 | zpl_xattr_get(struct inode *ip, const char *name, void *value, size_t size) |
336 | { | |
337 | znode_t *zp = ITOZ(ip); | |
338 | cred_t *cr = CRED(); | |
339 | int error; | |
340 | ||
341 | crhold(cr); | |
342 | rw_enter(&zp->z_xattr_lock, RW_READER); | |
343 | error = __zpl_xattr_get(ip, name, value, size, cr); | |
344 | rw_exit(&zp->z_xattr_lock); | |
345 | crfree(cr); | |
346 | ||
347 | return (error); | |
348 | } | |
349 | ||
350 | static int | |
351 | zpl_xattr_set_dir(struct inode *ip, const char *name, const void *value, | |
352 | size_t size, int flags, cred_t *cr) | |
cc5f931c BB |
353 | { |
354 | struct inode *dxip = NULL; | |
355 | struct inode *xip = NULL; | |
356 | vattr_t *vap = NULL; | |
cc5f931c | 357 | ssize_t wrote; |
fc9e0530 | 358 | int lookup_flags, error; |
bec30953 | 359 | const int xattr_mode = S_IFREG | 0644; |
cc5f931c | 360 | |
fc9e0530 BB |
361 | /* |
362 | * Lookup the xattr directory. When we're adding an entry pass | |
363 | * CREATE_XATTR_DIR to ensure the xattr directory is created. | |
364 | * When removing an entry this flag is not passed to avoid | |
365 | * unnecessarily creating a new xattr directory. | |
366 | */ | |
367 | lookup_flags = LOOKUP_XATTR; | |
368 | if (value != NULL) | |
369 | lookup_flags |= CREATE_XATTR_DIR; | |
370 | ||
371 | error = -zfs_lookup(ip, NULL, &dxip, lookup_flags, cr, NULL, NULL); | |
cc5f931c BB |
372 | if (error) |
373 | goto out; | |
374 | ||
82a37189 | 375 | /* Lookup a specific xattr name in the directory */ |
cc5f931c | 376 | error = -zfs_lookup(dxip, (char *)name, &xip, 0, cr, NULL, NULL); |
82a37189 BB |
377 | if (error && (error != -ENOENT)) |
378 | goto out; | |
cc5f931c | 379 | |
cc5f931c BB |
380 | error = 0; |
381 | ||
382 | /* Remove a specific name xattr when value is set to NULL. */ | |
383 | if (value == NULL) { | |
384 | if (xip) | |
385 | error = -zfs_remove(dxip, (char *)name, cr); | |
386 | ||
387 | goto out; | |
388 | } | |
389 | ||
390 | /* Lookup failed create a new xattr. */ | |
391 | if (xip == NULL) { | |
392 | vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP); | |
bec30953 | 393 | vap->va_mode = xattr_mode; |
cc5f931c | 394 | vap->va_mask = ATTR_MODE; |
81e97e21 BB |
395 | vap->va_uid = crgetfsuid(cr); |
396 | vap->va_gid = crgetfsgid(cr); | |
cc5f931c BB |
397 | |
398 | error = -zfs_create(dxip, (char *)name, vap, 0, 0644, &xip, | |
399 | cr, 0, NULL); | |
400 | if (error) | |
401 | goto out; | |
402 | } | |
403 | ||
404 | ASSERT(xip != NULL); | |
bec30953 GB |
405 | |
406 | error = -zfs_freesp(ITOZ(xip), 0, 0, xattr_mode, TRUE); | |
407 | if (error) | |
408 | goto out; | |
409 | ||
cc5f931c BB |
410 | wrote = zpl_write_common(xip, value, size, 0, UIO_SYSSPACE, 0, cr); |
411 | if (wrote < 0) | |
412 | error = wrote; | |
413 | ||
414 | out: | |
415 | if (vap) | |
416 | kmem_free(vap, sizeof(vattr_t)); | |
417 | ||
418 | if (xip) | |
419 | iput(xip); | |
420 | ||
421 | if (dxip) | |
422 | iput(dxip); | |
423 | ||
cc5f931c BB |
424 | if (error == -ENOENT) |
425 | error = -ENODATA; | |
426 | ||
427 | ASSERT3S(error, <=, 0); | |
428 | ||
429 | return (error); | |
430 | } | |
431 | ||
82a37189 BB |
432 | static int |
433 | zpl_xattr_set_sa(struct inode *ip, const char *name, const void *value, | |
434 | size_t size, int flags, cred_t *cr) | |
435 | { | |
436 | znode_t *zp = ITOZ(ip); | |
437 | nvlist_t *nvl; | |
438 | size_t sa_size; | |
439 | int error; | |
440 | ||
441 | ASSERT(zp->z_xattr_cached); | |
442 | nvl = zp->z_xattr_cached; | |
443 | ||
444 | if (value == NULL) { | |
445 | error = -nvlist_remove(nvl, name, DATA_TYPE_BYTE_ARRAY); | |
446 | if (error == -ENOENT) | |
447 | error = zpl_xattr_set_dir(ip, name, NULL, 0, flags, cr); | |
448 | } else { | |
449 | /* Limited to 32k to keep nvpair memory allocations small */ | |
450 | if (size > DXATTR_MAX_ENTRY_SIZE) | |
451 | return (-EFBIG); | |
452 | ||
453 | /* Prevent the DXATTR SA from consuming the entire SA region */ | |
454 | error = -nvlist_size(nvl, &sa_size, NV_ENCODE_XDR); | |
455 | if (error) | |
456 | return (error); | |
457 | ||
458 | if (sa_size > DXATTR_MAX_SA_SIZE) | |
459 | return (-EFBIG); | |
460 | ||
461 | error = -nvlist_add_byte_array(nvl, name, | |
462 | (uchar_t *)value, size); | |
463 | if (error) | |
464 | return (error); | |
465 | } | |
466 | ||
467 | /* Update the SA for additions, modifications, and removals. */ | |
468 | if (!error) | |
469 | error = -zfs_sa_set_xattr(zp); | |
470 | ||
471 | ASSERT3S(error, <=, 0); | |
472 | ||
473 | return (error); | |
474 | } | |
475 | ||
476 | static int | |
477 | zpl_xattr_set(struct inode *ip, const char *name, const void *value, | |
478 | size_t size, int flags) | |
479 | { | |
480 | znode_t *zp = ITOZ(ip); | |
481 | zfs_sb_t *zsb = ZTOZSB(zp); | |
482 | cred_t *cr = CRED(); | |
483 | int error; | |
484 | ||
485 | crhold(cr); | |
486 | rw_enter(&ITOZ(ip)->z_xattr_lock, RW_WRITER); | |
487 | ||
488 | /* | |
489 | * Before setting the xattr check to see if it already exists. | |
490 | * This is done to ensure the following optional flags are honored. | |
491 | * | |
492 | * XATTR_CREATE: fail if xattr already exists | |
493 | * XATTR_REPLACE: fail if xattr does not exist | |
494 | */ | |
495 | error = __zpl_xattr_get(ip, name, NULL, 0, cr); | |
496 | if (error < 0) { | |
497 | if (error != -ENODATA) | |
498 | goto out; | |
499 | ||
fc9e0530 BB |
500 | if (flags & XATTR_REPLACE) |
501 | goto out; | |
502 | ||
503 | /* The xattr to be removed already doesn't exist */ | |
504 | error = 0; | |
505 | if (value == NULL) | |
82a37189 BB |
506 | goto out; |
507 | } else { | |
508 | error = -EEXIST; | |
509 | if (flags & XATTR_CREATE) | |
510 | goto out; | |
511 | } | |
512 | ||
513 | /* Preferentially store the xattr as a SA for better performance */ | |
514 | if (zsb->z_use_sa && zsb->z_xattr_sa && zp->z_is_sa) { | |
515 | error = zpl_xattr_set_sa(ip, name, value, size, flags, cr); | |
516 | if (error == 0) | |
517 | goto out; | |
518 | } | |
519 | ||
520 | error = zpl_xattr_set_dir(ip, name, value, size, flags, cr); | |
521 | out: | |
522 | rw_exit(&ITOZ(ip)->z_xattr_lock); | |
523 | crfree(cr); | |
524 | ASSERT3S(error, <=, 0); | |
525 | ||
526 | return (error); | |
527 | } | |
528 | ||
cc5f931c | 529 | static int |
f9637c6c | 530 | __zpl_xattr_user_get(struct inode *ip, const char *name, |
82a37189 | 531 | void *value, size_t size) |
cc5f931c BB |
532 | { |
533 | char *xattr_name; | |
534 | int error; | |
535 | ||
536 | if (strcmp(name, "") == 0) | |
537 | return -EINVAL; | |
538 | ||
2cf7f52b | 539 | if (!(ITOZSB(ip)->z_flags & ZSB_XATTR)) |
cc5f931c BB |
540 | return -EOPNOTSUPP; |
541 | ||
542 | xattr_name = kmem_asprintf("%s%s", XATTR_USER_PREFIX, name); | |
82a37189 | 543 | error = zpl_xattr_get(ip, xattr_name, value, size); |
cc5f931c BB |
544 | strfree(xattr_name); |
545 | ||
546 | return (error); | |
547 | } | |
f9637c6c | 548 | ZPL_XATTR_GET_WRAPPER(zpl_xattr_user_get); |
cc5f931c BB |
549 | |
550 | static int | |
f9637c6c | 551 | __zpl_xattr_user_set(struct inode *ip, const char *name, |
cc5f931c BB |
552 | const void *value, size_t size, int flags) |
553 | { | |
554 | char *xattr_name; | |
555 | int error; | |
556 | ||
557 | if (strcmp(name, "") == 0) | |
558 | return -EINVAL; | |
559 | ||
2cf7f52b | 560 | if (!(ITOZSB(ip)->z_flags & ZSB_XATTR)) |
cc5f931c BB |
561 | return -EOPNOTSUPP; |
562 | ||
563 | xattr_name = kmem_asprintf("%s%s", XATTR_USER_PREFIX, name); | |
564 | error = zpl_xattr_set(ip, xattr_name, value, size, flags); | |
565 | strfree(xattr_name); | |
566 | ||
567 | return (error); | |
568 | } | |
f9637c6c | 569 | ZPL_XATTR_SET_WRAPPER(zpl_xattr_user_set); |
cc5f931c | 570 | |
777d4af8 | 571 | xattr_handler_t zpl_xattr_user_handler = { |
cc5f931c BB |
572 | .prefix = XATTR_USER_PREFIX, |
573 | .get = zpl_xattr_user_get, | |
574 | .set = zpl_xattr_user_set, | |
575 | }; | |
576 | ||
577 | static int | |
f9637c6c | 578 | __zpl_xattr_trusted_get(struct inode *ip, const char *name, |
82a37189 | 579 | void *value, size_t size) |
cc5f931c BB |
580 | { |
581 | char *xattr_name; | |
582 | int error; | |
583 | ||
584 | if (!capable(CAP_SYS_ADMIN)) | |
585 | return -EACCES; | |
586 | ||
587 | if (strcmp(name, "") == 0) | |
588 | return -EINVAL; | |
589 | ||
590 | xattr_name = kmem_asprintf("%s%s", XATTR_TRUSTED_PREFIX, name); | |
82a37189 | 591 | error = zpl_xattr_get(ip, xattr_name, value, size); |
cc5f931c BB |
592 | strfree(xattr_name); |
593 | ||
594 | return (error); | |
595 | } | |
f9637c6c | 596 | ZPL_XATTR_GET_WRAPPER(zpl_xattr_trusted_get); |
cc5f931c BB |
597 | |
598 | static int | |
f9637c6c | 599 | __zpl_xattr_trusted_set(struct inode *ip, const char *name, |
cc5f931c BB |
600 | const void *value, size_t size, int flags) |
601 | { | |
602 | char *xattr_name; | |
603 | int error; | |
604 | ||
605 | if (!capable(CAP_SYS_ADMIN)) | |
606 | return -EACCES; | |
607 | ||
608 | if (strcmp(name, "") == 0) | |
609 | return -EINVAL; | |
610 | ||
611 | xattr_name = kmem_asprintf("%s%s", XATTR_TRUSTED_PREFIX, name); | |
612 | error = zpl_xattr_set(ip, xattr_name, value, size, flags); | |
613 | strfree(xattr_name); | |
614 | ||
615 | return (error); | |
616 | } | |
f9637c6c | 617 | ZPL_XATTR_SET_WRAPPER(zpl_xattr_trusted_set); |
cc5f931c | 618 | |
777d4af8 | 619 | xattr_handler_t zpl_xattr_trusted_handler = { |
cc5f931c BB |
620 | .prefix = XATTR_TRUSTED_PREFIX, |
621 | .get = zpl_xattr_trusted_get, | |
622 | .set = zpl_xattr_trusted_set, | |
623 | }; | |
624 | ||
625 | static int | |
f9637c6c | 626 | __zpl_xattr_security_get(struct inode *ip, const char *name, |
82a37189 | 627 | void *value, size_t size) |
cc5f931c BB |
628 | { |
629 | char *xattr_name; | |
630 | int error; | |
631 | ||
632 | if (strcmp(name, "") == 0) | |
633 | return -EINVAL; | |
634 | ||
635 | xattr_name = kmem_asprintf("%s%s", XATTR_SECURITY_PREFIX, name); | |
82a37189 | 636 | error = zpl_xattr_get(ip, xattr_name, value, size); |
cc5f931c BB |
637 | strfree(xattr_name); |
638 | ||
639 | return (error); | |
640 | } | |
f9637c6c | 641 | ZPL_XATTR_GET_WRAPPER(zpl_xattr_security_get); |
cc5f931c BB |
642 | |
643 | static int | |
f9637c6c | 644 | __zpl_xattr_security_set(struct inode *ip, const char *name, |
cc5f931c BB |
645 | const void *value, size_t size, int flags) |
646 | { | |
647 | char *xattr_name; | |
648 | int error; | |
649 | ||
650 | if (strcmp(name, "") == 0) | |
651 | return -EINVAL; | |
652 | ||
653 | xattr_name = kmem_asprintf("%s%s", XATTR_SECURITY_PREFIX, name); | |
654 | error = zpl_xattr_set(ip, xattr_name, value, size, flags); | |
655 | strfree(xattr_name); | |
656 | ||
657 | return (error); | |
658 | } | |
f9637c6c | 659 | ZPL_XATTR_SET_WRAPPER(zpl_xattr_security_set); |
cc5f931c | 660 | |
166dd49d BB |
661 | #ifdef HAVE_CALLBACK_SECURITY_INODE_INIT_SECURITY |
662 | static int | |
663 | __zpl_xattr_security_init(struct inode *ip, const struct xattr *xattrs, | |
664 | void *fs_info) | |
665 | { | |
666 | const struct xattr *xattr; | |
667 | int error = 0; | |
668 | ||
669 | for (xattr = xattrs; xattr->name != NULL; xattr++) { | |
670 | error = __zpl_xattr_security_set(ip, | |
671 | xattr->name, xattr->value, xattr->value_len, 0); | |
672 | ||
673 | if (error < 0) | |
674 | break; | |
675 | } | |
676 | ||
96b91ef0 | 677 | return (error); |
166dd49d BB |
678 | } |
679 | ||
680 | int | |
681 | zpl_xattr_security_init(struct inode *ip, struct inode *dip, | |
682 | const struct qstr *qstr) | |
683 | { | |
684 | return security_inode_init_security(ip, dip, qstr, | |
685 | &__zpl_xattr_security_init, NULL); | |
686 | } | |
687 | ||
688 | #else | |
cc5f931c | 689 | int |
5c03efc3 BB |
690 | zpl_xattr_security_init(struct inode *ip, struct inode *dip, |
691 | const struct qstr *qstr) | |
cc5f931c | 692 | { |
96b91ef0 DH |
693 | int error; |
694 | size_t len; | |
695 | void *value; | |
696 | char *name; | |
cc5f931c | 697 | |
96b91ef0 DH |
698 | error = zpl_security_inode_init_security(ip, dip, qstr, |
699 | &name, &value, &len); | |
700 | if (error) { | |
701 | if (error == -EOPNOTSUPP) | |
702 | return 0; | |
703 | return (error); | |
704 | } | |
cc5f931c | 705 | |
f9637c6c | 706 | error = __zpl_xattr_security_set(ip, name, value, len, 0); |
cc5f931c | 707 | |
96b91ef0 DH |
708 | kfree(name); |
709 | kfree(value); | |
cc5f931c | 710 | |
96b91ef0 | 711 | return (error); |
cc5f931c | 712 | } |
166dd49d | 713 | #endif /* HAVE_CALLBACK_SECURITY_INODE_INIT_SECURITY */ |
cc5f931c | 714 | |
777d4af8 | 715 | xattr_handler_t zpl_xattr_security_handler = { |
cc5f931c BB |
716 | .prefix = XATTR_SECURITY_PREFIX, |
717 | .get = zpl_xattr_security_get, | |
718 | .set = zpl_xattr_security_set, | |
719 | }; | |
720 | ||
b695c34e MM |
721 | #ifdef CONFIG_FS_POSIX_ACL |
722 | ||
023699cd MM |
723 | int |
724 | zpl_set_acl(struct inode *ip, int type, struct posix_acl *acl) | |
725 | { | |
726 | struct super_block *sb = ITOZSB(ip)->z_sb; | |
727 | char *name, *value = NULL; | |
728 | int error = 0; | |
729 | size_t size = 0; | |
730 | ||
731 | if (S_ISLNK(ip->i_mode)) | |
732 | return (-EOPNOTSUPP); | |
733 | ||
734 | switch(type) { | |
735 | case ACL_TYPE_ACCESS: | |
736 | name = POSIX_ACL_XATTR_ACCESS; | |
737 | if (acl) { | |
738 | zpl_equivmode_t mode = ip->i_mode; | |
739 | error = posix_acl_equiv_mode(acl, &mode); | |
740 | if (error < 0) { | |
741 | return (error); | |
742 | } else { | |
743 | /* | |
744 | * The mode bits will have been set by | |
745 | * ->zfs_setattr()->zfs_acl_chmod_setattr() | |
746 | * using the ZFS ACL conversion. If they | |
747 | * differ from the Posix ACL conversion dirty | |
748 | * the inode to write the Posix mode bits. | |
749 | */ | |
750 | if (ip->i_mode != mode) { | |
751 | ip->i_mode = mode; | |
752 | ip->i_ctime = current_fs_time(sb); | |
753 | mark_inode_dirty(ip); | |
754 | } | |
755 | ||
756 | if (error == 0) | |
757 | acl = NULL; | |
758 | } | |
759 | } | |
760 | break; | |
761 | ||
762 | case ACL_TYPE_DEFAULT: | |
763 | name = POSIX_ACL_XATTR_DEFAULT; | |
764 | if (!S_ISDIR(ip->i_mode)) | |
765 | return (acl ? -EACCES : 0); | |
766 | break; | |
767 | ||
768 | default: | |
769 | return (-EINVAL); | |
770 | } | |
771 | ||
772 | if (acl) { | |
773 | size = posix_acl_xattr_size(acl->a_count); | |
774 | value = kmem_alloc(size, KM_SLEEP); | |
775 | ||
776 | error = zpl_acl_to_xattr(acl, value, size); | |
777 | if (error < 0) { | |
778 | kmem_free(value, size); | |
779 | return (error); | |
780 | } | |
781 | } | |
782 | ||
783 | error = zpl_xattr_set(ip, name, value, size, 0); | |
784 | if (value) | |
785 | kmem_free(value, size); | |
786 | ||
787 | if (!error) { | |
788 | if (acl) | |
789 | zpl_set_cached_acl(ip, type, acl); | |
790 | else | |
791 | zpl_forget_cached_acl(ip, type); | |
792 | } | |
793 | ||
794 | return (error); | |
795 | } | |
796 | ||
797 | struct posix_acl * | |
798 | zpl_get_acl(struct inode *ip, int type) | |
799 | { | |
800 | struct posix_acl *acl; | |
801 | void *value = NULL; | |
802 | char *name; | |
803 | int size; | |
804 | ||
805 | #ifdef HAVE_POSIX_ACL_CACHING | |
806 | acl = get_cached_acl(ip, type); | |
807 | if (acl != ACL_NOT_CACHED) | |
808 | return (acl); | |
809 | #endif /* HAVE_POSIX_ACL_CACHING */ | |
810 | ||
811 | switch (type) { | |
812 | case ACL_TYPE_ACCESS: | |
813 | name = POSIX_ACL_XATTR_ACCESS; | |
814 | break; | |
815 | case ACL_TYPE_DEFAULT: | |
816 | name = POSIX_ACL_XATTR_DEFAULT; | |
817 | break; | |
818 | default: | |
819 | return ERR_PTR(-EINVAL); | |
820 | } | |
821 | ||
822 | size = zpl_xattr_get(ip, name, NULL, 0); | |
823 | if (size > 0) { | |
824 | value = kmem_alloc(size, KM_PUSHPAGE); | |
825 | size = zpl_xattr_get(ip, name, value, size); | |
826 | } | |
827 | ||
828 | if (size > 0) { | |
829 | acl = zpl_acl_from_xattr(value, size); | |
830 | } else if (size == -ENODATA || size == -ENOSYS) { | |
831 | acl = NULL; | |
832 | } else { | |
833 | acl = ERR_PTR(-EIO); | |
834 | } | |
835 | ||
836 | if (size > 0) | |
837 | kmem_free(value, size); | |
838 | ||
839 | if (!IS_ERR(acl)) | |
840 | zpl_set_cached_acl(ip, type, acl); | |
841 | ||
842 | return (acl); | |
843 | } | |
844 | ||
845 | #if !defined(HAVE_GET_ACL) | |
846 | static int | |
847 | __zpl_check_acl(struct inode *ip, int mask) | |
848 | { | |
849 | struct posix_acl *acl; | |
850 | int error; | |
851 | ||
852 | acl = zpl_get_acl(ip, ACL_TYPE_ACCESS); | |
853 | if (IS_ERR(acl)) | |
854 | return (PTR_ERR(acl)); | |
855 | ||
856 | if (acl) { | |
857 | error = posix_acl_permission(ip, acl, mask); | |
858 | zpl_posix_acl_release(acl); | |
859 | return (error); | |
860 | } | |
861 | ||
862 | return (-EAGAIN); | |
863 | } | |
864 | ||
865 | #if defined(HAVE_CHECK_ACL_WITH_FLAGS) | |
866 | int | |
867 | zpl_check_acl(struct inode *ip, int mask, unsigned int flags) | |
868 | { | |
869 | return __zpl_check_acl(ip, mask); | |
870 | } | |
871 | #elif defined(HAVE_CHECK_ACL) | |
872 | int | |
873 | zpl_check_acl(struct inode *ip, int mask) | |
874 | { | |
875 | return __zpl_check_acl(ip , mask); | |
876 | } | |
877 | #elif defined(HAVE_PERMISSION_WITH_NAMEIDATA) | |
878 | int | |
879 | zpl_permission(struct inode *ip, int mask, struct nameidata *nd) | |
880 | { | |
881 | return generic_permission(ip, mask, __zpl_check_acl); | |
882 | } | |
883 | #elif defined(HAVE_PERMISSION) | |
884 | int | |
885 | zpl_permission(struct inode *ip, int mask) | |
886 | { | |
887 | return generic_permission(ip, mask, __zpl_check_acl); | |
888 | } | |
889 | #endif /* HAVE_CHECK_ACL | HAVE_PERMISSION */ | |
890 | #endif /* !HAVE_GET_ACL */ | |
891 | ||
892 | int | |
893 | zpl_init_acl(struct inode *ip, struct inode *dir) | |
894 | { | |
895 | struct posix_acl *acl = NULL; | |
896 | int error = 0; | |
897 | ||
898 | if (ITOZSB(ip)->z_acl_type != ZFS_ACLTYPE_POSIXACL) | |
899 | return (0); | |
900 | ||
901 | if (!S_ISLNK(ip->i_mode)) { | |
902 | if (ITOZSB(ip)->z_acl_type == ZFS_ACLTYPE_POSIXACL) { | |
903 | acl = zpl_get_acl(dir, ACL_TYPE_DEFAULT); | |
904 | if (IS_ERR(acl)) | |
905 | return (PTR_ERR(acl)); | |
906 | } | |
907 | ||
908 | if (!acl) { | |
909 | ip->i_mode &= ~current_umask(); | |
910 | ip->i_ctime = current_fs_time(ITOZSB(ip)->z_sb); | |
911 | mark_inode_dirty(ip); | |
912 | return (0); | |
913 | } | |
914 | } | |
915 | ||
916 | if ((ITOZSB(ip)->z_acl_type == ZFS_ACLTYPE_POSIXACL) && acl) { | |
917 | umode_t mode; | |
918 | ||
919 | if (S_ISDIR(ip->i_mode)) { | |
920 | error = zpl_set_acl(ip, ACL_TYPE_DEFAULT, acl); | |
921 | if (error) | |
922 | goto out; | |
923 | } | |
924 | ||
925 | mode = ip->i_mode; | |
926 | error = posix_acl_create(&acl,GFP_KERNEL, &mode); | |
927 | if (error >= 0) { | |
928 | ip->i_mode = mode; | |
929 | mark_inode_dirty(ip); | |
930 | if (error > 0) | |
931 | error = zpl_set_acl(ip, ACL_TYPE_ACCESS, acl); | |
932 | } | |
933 | } | |
934 | out: | |
935 | zpl_posix_acl_release(acl); | |
936 | ||
937 | return (error); | |
938 | } | |
939 | ||
940 | int | |
941 | zpl_chmod_acl(struct inode *ip) | |
942 | { | |
943 | struct posix_acl *acl; | |
944 | int error; | |
945 | ||
946 | if (ITOZSB(ip)->z_acl_type != ZFS_ACLTYPE_POSIXACL) | |
947 | return (0); | |
948 | ||
949 | if (S_ISLNK(ip->i_mode)) | |
950 | return (-EOPNOTSUPP); | |
951 | ||
952 | acl = zpl_get_acl(ip, ACL_TYPE_ACCESS); | |
953 | if (IS_ERR(acl) || !acl) | |
954 | return (PTR_ERR(acl)); | |
955 | ||
956 | error = posix_acl_chmod(&acl,GFP_KERNEL, ip->i_mode); | |
957 | if (!error) | |
958 | error = zpl_set_acl(ip,ACL_TYPE_ACCESS, acl); | |
959 | ||
960 | zpl_posix_acl_release(acl); | |
961 | ||
962 | return (error); | |
963 | } | |
964 | ||
965 | static size_t | |
966 | zpl_xattr_acl_list(struct inode *ip, char *list, size_t list_size, | |
967 | const char *name, size_t name_len, int type) | |
968 | { | |
969 | char *xattr_name; | |
970 | size_t xattr_size; | |
971 | ||
972 | if (ITOZSB(ip)->z_acl_type != ZFS_ACLTYPE_POSIXACL) | |
973 | return (0); | |
974 | ||
975 | switch (type) { | |
976 | case ACL_TYPE_ACCESS: | |
977 | xattr_name = POSIX_ACL_XATTR_ACCESS; | |
978 | xattr_size = sizeof(xattr_name); | |
979 | break; | |
980 | case ACL_TYPE_DEFAULT: | |
981 | xattr_name = POSIX_ACL_XATTR_DEFAULT; | |
982 | xattr_size = sizeof(xattr_name); | |
983 | break; | |
984 | default: | |
985 | return (0); | |
986 | } | |
987 | ||
988 | if (list && xattr_size <= list_size) | |
989 | memcpy(list, xattr_name, xattr_size); | |
990 | ||
991 | return (xattr_size); | |
992 | } | |
993 | ||
994 | #ifdef HAVE_DENTRY_XATTR_LIST | |
995 | static size_t | |
996 | zpl_xattr_acl_list_access(struct dentry *dentry, char *list, | |
997 | size_t list_size, const char *name, size_t name_len, int type) | |
998 | { | |
999 | ASSERT3S(type, ==, ACL_TYPE_ACCESS); | |
1000 | return zpl_xattr_acl_list(dentry->d_inode, | |
1001 | list, list_size, name, name_len, type); | |
1002 | } | |
1003 | ||
1004 | static size_t | |
1005 | zpl_xattr_acl_list_default(struct dentry *dentry, char *list, | |
1006 | size_t list_size, const char *name, size_t name_len, int type) | |
1007 | { | |
1008 | ASSERT3S(type, ==, ACL_TYPE_DEFAULT); | |
1009 | return zpl_xattr_acl_list(dentry->d_inode, | |
1010 | list, list_size, name, name_len, type); | |
1011 | } | |
1012 | ||
1013 | #else | |
1014 | ||
1015 | static size_t | |
1016 | zpl_xattr_acl_list_access(struct inode *ip, char *list, size_t list_size, | |
1017 | const char *name, size_t name_len) | |
1018 | { | |
1019 | return zpl_xattr_acl_list(ip, | |
1020 | list, list_size, name, name_len, ACL_TYPE_ACCESS); | |
1021 | } | |
1022 | ||
1023 | static size_t | |
1024 | zpl_xattr_acl_list_default(struct inode *ip, char *list, size_t list_size, | |
1025 | const char *name, size_t name_len) | |
1026 | { | |
1027 | return zpl_xattr_acl_list(ip, | |
1028 | list, list_size, name, name_len, ACL_TYPE_DEFAULT); | |
1029 | } | |
1030 | #endif /* HAVE_DENTRY_XATTR_LIST */ | |
1031 | ||
1032 | static int | |
1033 | zpl_xattr_acl_get(struct inode *ip, const char *name, | |
1034 | void *buffer, size_t size, int type) | |
1035 | { | |
1036 | struct posix_acl *acl; | |
1037 | int error; | |
1038 | ||
1039 | if (strcmp(name, "") != 0) | |
1040 | return (-EINVAL); | |
1041 | ||
1042 | if (ITOZSB(ip)->z_acl_type != ZFS_ACLTYPE_POSIXACL) | |
1043 | return (-EOPNOTSUPP); | |
1044 | ||
1045 | acl = zpl_get_acl(ip, type); | |
1046 | if (IS_ERR(acl)) | |
1047 | return (PTR_ERR(acl)); | |
1048 | if (acl == NULL) | |
1049 | return (-ENODATA); | |
1050 | ||
1051 | error = zpl_acl_to_xattr(acl, buffer, size); | |
1052 | zpl_posix_acl_release(acl); | |
1053 | ||
1054 | return (error); | |
1055 | } | |
1056 | ||
1057 | #ifdef HAVE_DENTRY_XATTR_GET | |
1058 | static int | |
1059 | zpl_xattr_acl_get_access(struct dentry *dentry, const char *name, | |
1060 | void *buffer, size_t size, int type) | |
1061 | { | |
1062 | ASSERT3S(type, ==, ACL_TYPE_ACCESS); | |
1063 | return zpl_xattr_acl_get(dentry->d_inode, name, buffer, size, type); | |
1064 | } | |
1065 | ||
1066 | static int | |
1067 | zpl_xattr_acl_get_default(struct dentry *dentry, const char *name, | |
1068 | void *buffer, size_t size, int type) | |
1069 | { | |
1070 | ASSERT3S(type, ==, ACL_TYPE_DEFAULT); | |
1071 | return zpl_xattr_acl_get(dentry->d_inode, name, buffer, size, type); | |
1072 | } | |
1073 | ||
1074 | #else | |
1075 | ||
1076 | static int | |
1077 | zpl_xattr_acl_get_access(struct inode *ip, const char *name, | |
1078 | void *buffer, size_t size) | |
1079 | { | |
1080 | return zpl_xattr_acl_get(ip, name, buffer, size, ACL_TYPE_ACCESS); | |
1081 | } | |
1082 | ||
1083 | static int | |
1084 | zpl_xattr_acl_get_default(struct inode *ip, const char *name, | |
1085 | void *buffer, size_t size) | |
1086 | { | |
1087 | return zpl_xattr_acl_get(ip, name, buffer, size, ACL_TYPE_DEFAULT); | |
1088 | } | |
1089 | #endif /* HAVE_DENTRY_XATTR_GET */ | |
1090 | ||
1091 | static int | |
1092 | zpl_xattr_acl_set(struct inode *ip, const char *name, | |
1093 | const void *value, size_t size, int flags, int type) | |
1094 | { | |
1095 | struct posix_acl *acl; | |
1096 | int error = 0; | |
1097 | ||
1098 | if (strcmp(name, "") != 0) | |
1099 | return (-EINVAL); | |
1100 | ||
1101 | if (ITOZSB(ip)->z_acl_type != ZFS_ACLTYPE_POSIXACL) | |
1102 | return (-EOPNOTSUPP); | |
1103 | ||
1104 | if (!zpl_inode_owner_or_capable(ip)) | |
1105 | return (-EPERM); | |
1106 | ||
1107 | if (value) { | |
1108 | acl = zpl_acl_from_xattr(value, size); | |
1109 | if (IS_ERR(acl)) | |
1110 | return (PTR_ERR(acl)); | |
1111 | else if (acl) { | |
1112 | error = posix_acl_valid(acl); | |
1113 | if (error) { | |
1114 | zpl_posix_acl_release(acl); | |
1115 | return (error); | |
1116 | } | |
1117 | } | |
1118 | } else { | |
1119 | acl = NULL; | |
1120 | } | |
1121 | ||
1122 | error = zpl_set_acl(ip, type, acl); | |
1123 | zpl_posix_acl_release(acl); | |
1124 | ||
1125 | return (error); | |
1126 | } | |
1127 | ||
1128 | #ifdef HAVE_DENTRY_XATTR_SET | |
1129 | static int | |
1130 | zpl_xattr_acl_set_access(struct dentry *dentry, const char *name, | |
1131 | const void *value, size_t size, int flags, int type) | |
1132 | { | |
1133 | ASSERT3S(type, ==, ACL_TYPE_ACCESS); | |
1134 | return zpl_xattr_acl_set(dentry->d_inode, | |
1135 | name, value, size, flags, type); | |
1136 | } | |
1137 | ||
1138 | static int | |
1139 | zpl_xattr_acl_set_default(struct dentry *dentry, const char *name, | |
1140 | const void *value, size_t size,int flags, int type) | |
1141 | { | |
1142 | ASSERT3S(type, ==, ACL_TYPE_DEFAULT); | |
1143 | return zpl_xattr_acl_set(dentry->d_inode, | |
1144 | name, value, size, flags, type); | |
1145 | } | |
1146 | ||
1147 | #else | |
1148 | ||
1149 | static int | |
1150 | zpl_xattr_acl_set_access(struct inode *ip, const char *name, | |
1151 | const void *value, size_t size, int flags) | |
1152 | { | |
1153 | return zpl_xattr_acl_set(ip, | |
1154 | name, value, size, flags, ACL_TYPE_ACCESS); | |
1155 | } | |
1156 | ||
1157 | static int | |
1158 | zpl_xattr_acl_set_default(struct inode *ip, const char *name, | |
1159 | const void *value, size_t size, int flags) | |
1160 | { | |
1161 | return zpl_xattr_acl_set(ip, | |
1162 | name, value, size, flags, ACL_TYPE_DEFAULT); | |
1163 | } | |
1164 | #endif /* HAVE_DENTRY_XATTR_SET */ | |
1165 | ||
1166 | struct xattr_handler zpl_xattr_acl_access_handler = | |
1167 | { | |
1168 | .prefix = POSIX_ACL_XATTR_ACCESS, | |
1169 | .list = zpl_xattr_acl_list_access, | |
1170 | .get = zpl_xattr_acl_get_access, | |
1171 | .set = zpl_xattr_acl_set_access, | |
1172 | #ifdef HAVE_DENTRY_XATTR_LIST | |
1173 | .flags = ACL_TYPE_ACCESS, | |
1174 | #endif /* HAVE_DENTRY_XATTR_LIST */ | |
1175 | }; | |
1176 | ||
1177 | struct xattr_handler zpl_xattr_acl_default_handler = | |
1178 | { | |
1179 | .prefix = POSIX_ACL_XATTR_DEFAULT, | |
1180 | .list = zpl_xattr_acl_list_default, | |
1181 | .get = zpl_xattr_acl_get_default, | |
1182 | .set = zpl_xattr_acl_set_default, | |
1183 | #ifdef HAVE_DENTRY_XATTR_LIST | |
1184 | .flags = ACL_TYPE_DEFAULT, | |
1185 | #endif /* HAVE_DENTRY_XATTR_LIST */ | |
1186 | }; | |
1187 | ||
b695c34e MM |
1188 | #endif /* CONFIG_FS_POSIX_ACL */ |
1189 | ||
777d4af8 | 1190 | xattr_handler_t *zpl_xattr_handlers[] = { |
cc5f931c BB |
1191 | &zpl_xattr_security_handler, |
1192 | &zpl_xattr_trusted_handler, | |
1193 | &zpl_xattr_user_handler, | |
b695c34e | 1194 | #ifdef CONFIG_FS_POSIX_ACL |
cc5f931c | 1195 | &zpl_xattr_acl_access_handler, |
96b91ef0 | 1196 | &zpl_xattr_acl_default_handler, |
b695c34e | 1197 | #endif /* CONFIG_FS_POSIX_ACL */ |
77a405ae | 1198 | NULL |
cc5f931c | 1199 | }; |