1
2#include <linux/ceph/ceph_debug.h>
3#include <linux/ceph/pagelist.h>
4
5#include "super.h"
6#include "mds_client.h"
7
8#include <linux/ceph/decode.h>
9
10#include <linux/xattr.h>
11#include <linux/security.h>
12#include <linux/posix_acl_xattr.h>
13#include <linux/slab.h>
14
15#define XATTR_CEPH_PREFIX "ceph."
16#define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1)
17
18static int __remove_xattr(struct ceph_inode_info *ci,
19 struct ceph_inode_xattr *xattr);
20
21static bool ceph_is_valid_xattr(const char *name)
22{
23 return !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) ||
24 !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) ||
25 !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) ||
26 !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN);
27}
28
29
30
31
32
33struct ceph_vxattr {
34 char *name;
35 size_t name_size;
36 ssize_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val,
37 size_t size);
38 bool (*exists_cb)(struct ceph_inode_info *ci);
39 unsigned int flags;
40};
41
42#define VXATTR_FLAG_READONLY (1<<0)
43#define VXATTR_FLAG_HIDDEN (1<<1)
44#define VXATTR_FLAG_RSTAT (1<<2)
45#define VXATTR_FLAG_DIRSTAT (1<<3)
46
47
48
49static bool ceph_vxattrcb_layout_exists(struct ceph_inode_info *ci)
50{
51 struct ceph_file_layout *fl = &ci->i_layout;
52 return (fl->stripe_unit > 0 || fl->stripe_count > 0 ||
53 fl->object_size > 0 || fl->pool_id >= 0 ||
54 rcu_dereference_raw(fl->pool_ns) != NULL);
55}
56
57static ssize_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
58 size_t size)
59{
60 struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
61 struct ceph_osd_client *osdc = &fsc->client->osdc;
62 struct ceph_string *pool_ns;
63 s64 pool = ci->i_layout.pool_id;
64 const char *pool_name;
65 const char *ns_field = " pool_namespace=";
66 char buf[128];
67 size_t len, total_len = 0;
68 ssize_t ret;
69
70 pool_ns = ceph_try_get_string(ci->i_layout.pool_ns);
71
72 dout("ceph_vxattrcb_layout %p\n", &ci->vfs_inode);
73 down_read(&osdc->lock);
74 pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool);
75 if (pool_name) {
76 len = snprintf(buf, sizeof(buf),
77 "stripe_unit=%u stripe_count=%u object_size=%u pool=",
78 ci->i_layout.stripe_unit, ci->i_layout.stripe_count,
79 ci->i_layout.object_size);
80 total_len = len + strlen(pool_name);
81 } else {
82 len = snprintf(buf, sizeof(buf),
83 "stripe_unit=%u stripe_count=%u object_size=%u pool=%lld",
84 ci->i_layout.stripe_unit, ci->i_layout.stripe_count,
85 ci->i_layout.object_size, pool);
86 total_len = len;
87 }
88
89 if (pool_ns)
90 total_len += strlen(ns_field) + pool_ns->len;
91
92 ret = total_len;
93 if (size >= total_len) {
94 memcpy(val, buf, len);
95 ret = len;
96 if (pool_name) {
97 len = strlen(pool_name);
98 memcpy(val + ret, pool_name, len);
99 ret += len;
100 }
101 if (pool_ns) {
102 len = strlen(ns_field);
103 memcpy(val + ret, ns_field, len);
104 ret += len;
105 memcpy(val + ret, pool_ns->str, pool_ns->len);
106 ret += pool_ns->len;
107 }
108 }
109 up_read(&osdc->lock);
110 ceph_put_string(pool_ns);
111 return ret;
112}
113
114
115
116
117
118
119
120static __printf(3, 4)
121int ceph_fmt_xattr(char *val, size_t size, const char *fmt, ...)
122{
123 int ret;
124 va_list args;
125 char buf[96];
126
127 va_start(args, fmt);
128 ret = vsnprintf(buf, size ? sizeof(buf) : 0, fmt, args);
129 va_end(args);
130
131
132 if (size && ret + 1 > sizeof(buf)) {
133 WARN_ONCE(true, "Returned length too big (%d)", ret);
134 return -E2BIG;
135 }
136
137 if (ret <= size)
138 memcpy(val, buf, ret);
139 return ret;
140}
141
142static ssize_t ceph_vxattrcb_layout_stripe_unit(struct ceph_inode_info *ci,
143 char *val, size_t size)
144{
145 return ceph_fmt_xattr(val, size, "%u", ci->i_layout.stripe_unit);
146}
147
148static ssize_t ceph_vxattrcb_layout_stripe_count(struct ceph_inode_info *ci,
149 char *val, size_t size)
150{
151 return ceph_fmt_xattr(val, size, "%u", ci->i_layout.stripe_count);
152}
153
154static ssize_t ceph_vxattrcb_layout_object_size(struct ceph_inode_info *ci,
155 char *val, size_t size)
156{
157 return ceph_fmt_xattr(val, size, "%u", ci->i_layout.object_size);
158}
159
160static ssize_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci,
161 char *val, size_t size)
162{
163 ssize_t ret;
164 struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
165 struct ceph_osd_client *osdc = &fsc->client->osdc;
166 s64 pool = ci->i_layout.pool_id;
167 const char *pool_name;
168
169 down_read(&osdc->lock);
170 pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool);
171 if (pool_name) {
172 ret = strlen(pool_name);
173 if (ret <= size)
174 memcpy(val, pool_name, ret);
175 } else {
176 ret = ceph_fmt_xattr(val, size, "%lld", pool);
177 }
178 up_read(&osdc->lock);
179 return ret;
180}
181
182static ssize_t ceph_vxattrcb_layout_pool_namespace(struct ceph_inode_info *ci,
183 char *val, size_t size)
184{
185 ssize_t ret = 0;
186 struct ceph_string *ns = ceph_try_get_string(ci->i_layout.pool_ns);
187
188 if (ns) {
189 ret = ns->len;
190 if (ret <= size)
191 memcpy(val, ns->str, ret);
192 ceph_put_string(ns);
193 }
194 return ret;
195}
196
197
198
199static ssize_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val,
200 size_t size)
201{
202 return ceph_fmt_xattr(val, size, "%lld", ci->i_files + ci->i_subdirs);
203}
204
205static ssize_t ceph_vxattrcb_dir_files(struct ceph_inode_info *ci, char *val,
206 size_t size)
207{
208 return ceph_fmt_xattr(val, size, "%lld", ci->i_files);
209}
210
211static ssize_t ceph_vxattrcb_dir_subdirs(struct ceph_inode_info *ci, char *val,
212 size_t size)
213{
214 return ceph_fmt_xattr(val, size, "%lld", ci->i_subdirs);
215}
216
217static ssize_t ceph_vxattrcb_dir_rentries(struct ceph_inode_info *ci, char *val,
218 size_t size)
219{
220 return ceph_fmt_xattr(val, size, "%lld",
221 ci->i_rfiles + ci->i_rsubdirs);
222}
223
224static ssize_t ceph_vxattrcb_dir_rfiles(struct ceph_inode_info *ci, char *val,
225 size_t size)
226{
227 return ceph_fmt_xattr(val, size, "%lld", ci->i_rfiles);
228}
229
230static ssize_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val,
231 size_t size)
232{
233 return ceph_fmt_xattr(val, size, "%lld", ci->i_rsubdirs);
234}
235
236static ssize_t ceph_vxattrcb_dir_rsnaps(struct ceph_inode_info *ci, char *val,
237 size_t size)
238{
239 return ceph_fmt_xattr(val, size, "%lld", ci->i_rsnaps);
240}
241
242static ssize_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val,
243 size_t size)
244{
245 return ceph_fmt_xattr(val, size, "%lld", ci->i_rbytes);
246}
247
248static ssize_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
249 size_t size)
250{
251 return ceph_fmt_xattr(val, size, "%lld.%09ld", ci->i_rctime.tv_sec,
252 ci->i_rctime.tv_nsec);
253}
254
255
256static bool ceph_vxattrcb_dir_pin_exists(struct ceph_inode_info *ci)
257{
258 return ci->i_dir_pin != -ENODATA;
259}
260
261static ssize_t ceph_vxattrcb_dir_pin(struct ceph_inode_info *ci, char *val,
262 size_t size)
263{
264 return ceph_fmt_xattr(val, size, "%d", (int)ci->i_dir_pin);
265}
266
267
268static bool ceph_vxattrcb_quota_exists(struct ceph_inode_info *ci)
269{
270 bool ret = false;
271 spin_lock(&ci->i_ceph_lock);
272 if ((ci->i_max_files || ci->i_max_bytes) &&
273 ci->i_vino.snap == CEPH_NOSNAP &&
274 ci->i_snap_realm &&
275 ci->i_snap_realm->ino == ci->i_vino.ino)
276 ret = true;
277 spin_unlock(&ci->i_ceph_lock);
278 return ret;
279}
280
281static ssize_t ceph_vxattrcb_quota(struct ceph_inode_info *ci, char *val,
282 size_t size)
283{
284 return ceph_fmt_xattr(val, size, "max_bytes=%llu max_files=%llu",
285 ci->i_max_bytes, ci->i_max_files);
286}
287
288static ssize_t ceph_vxattrcb_quota_max_bytes(struct ceph_inode_info *ci,
289 char *val, size_t size)
290{
291 return ceph_fmt_xattr(val, size, "%llu", ci->i_max_bytes);
292}
293
294static ssize_t ceph_vxattrcb_quota_max_files(struct ceph_inode_info *ci,
295 char *val, size_t size)
296{
297 return ceph_fmt_xattr(val, size, "%llu", ci->i_max_files);
298}
299
300
301static bool ceph_vxattrcb_snap_btime_exists(struct ceph_inode_info *ci)
302{
303 return (ci->i_snap_btime.tv_sec != 0 || ci->i_snap_btime.tv_nsec != 0);
304}
305
306static ssize_t ceph_vxattrcb_snap_btime(struct ceph_inode_info *ci, char *val,
307 size_t size)
308{
309 return ceph_fmt_xattr(val, size, "%lld.%09ld", ci->i_snap_btime.tv_sec,
310 ci->i_snap_btime.tv_nsec);
311}
312
313static ssize_t ceph_vxattrcb_cluster_fsid(struct ceph_inode_info *ci,
314 char *val, size_t size)
315{
316 struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
317
318 return ceph_fmt_xattr(val, size, "%pU", &fsc->client->fsid);
319}
320
321static ssize_t ceph_vxattrcb_client_id(struct ceph_inode_info *ci,
322 char *val, size_t size)
323{
324 struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
325
326 return ceph_fmt_xattr(val, size, "client%lld",
327 ceph_client_gid(fsc->client));
328}
329
330static ssize_t ceph_vxattrcb_caps(struct ceph_inode_info *ci, char *val,
331 size_t size)
332{
333 int issued;
334
335 spin_lock(&ci->i_ceph_lock);
336 issued = __ceph_caps_issued(ci, NULL);
337 spin_unlock(&ci->i_ceph_lock);
338
339 return ceph_fmt_xattr(val, size, "%s/0x%x",
340 ceph_cap_string(issued), issued);
341}
342
343#define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name
344#define CEPH_XATTR_NAME2(_type, _name, _name2) \
345 XATTR_CEPH_PREFIX #_type "." #_name "." #_name2
346
347#define XATTR_NAME_CEPH(_type, _name, _flags) \
348 { \
349 .name = CEPH_XATTR_NAME(_type, _name), \
350 .name_size = sizeof (CEPH_XATTR_NAME(_type, _name)), \
351 .getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \
352 .exists_cb = NULL, \
353 .flags = (VXATTR_FLAG_READONLY | _flags), \
354 }
355#define XATTR_RSTAT_FIELD(_type, _name) \
356 XATTR_NAME_CEPH(_type, _name, VXATTR_FLAG_RSTAT)
357#define XATTR_LAYOUT_FIELD(_type, _name, _field) \
358 { \
359 .name = CEPH_XATTR_NAME2(_type, _name, _field), \
360 .name_size = sizeof (CEPH_XATTR_NAME2(_type, _name, _field)), \
361 .getxattr_cb = ceph_vxattrcb_ ## _name ## _ ## _field, \
362 .exists_cb = ceph_vxattrcb_layout_exists, \
363 .flags = VXATTR_FLAG_HIDDEN, \
364 }
365#define XATTR_QUOTA_FIELD(_type, _name) \
366 { \
367 .name = CEPH_XATTR_NAME(_type, _name), \
368 .name_size = sizeof(CEPH_XATTR_NAME(_type, _name)), \
369 .getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \
370 .exists_cb = ceph_vxattrcb_quota_exists, \
371 .flags = VXATTR_FLAG_HIDDEN, \
372 }
373
374static struct ceph_vxattr ceph_dir_vxattrs[] = {
375 {
376 .name = "ceph.dir.layout",
377 .name_size = sizeof("ceph.dir.layout"),
378 .getxattr_cb = ceph_vxattrcb_layout,
379 .exists_cb = ceph_vxattrcb_layout_exists,
380 .flags = VXATTR_FLAG_HIDDEN,
381 },
382 XATTR_LAYOUT_FIELD(dir, layout, stripe_unit),
383 XATTR_LAYOUT_FIELD(dir, layout, stripe_count),
384 XATTR_LAYOUT_FIELD(dir, layout, object_size),
385 XATTR_LAYOUT_FIELD(dir, layout, pool),
386 XATTR_LAYOUT_FIELD(dir, layout, pool_namespace),
387 XATTR_NAME_CEPH(dir, entries, VXATTR_FLAG_DIRSTAT),
388 XATTR_NAME_CEPH(dir, files, VXATTR_FLAG_DIRSTAT),
389 XATTR_NAME_CEPH(dir, subdirs, VXATTR_FLAG_DIRSTAT),
390 XATTR_RSTAT_FIELD(dir, rentries),
391 XATTR_RSTAT_FIELD(dir, rfiles),
392 XATTR_RSTAT_FIELD(dir, rsubdirs),
393 XATTR_RSTAT_FIELD(dir, rsnaps),
394 XATTR_RSTAT_FIELD(dir, rbytes),
395 XATTR_RSTAT_FIELD(dir, rctime),
396 {
397 .name = "ceph.dir.pin",
398 .name_size = sizeof("ceph.dir.pin"),
399 .getxattr_cb = ceph_vxattrcb_dir_pin,
400 .exists_cb = ceph_vxattrcb_dir_pin_exists,
401 .flags = VXATTR_FLAG_HIDDEN,
402 },
403 {
404 .name = "ceph.quota",
405 .name_size = sizeof("ceph.quota"),
406 .getxattr_cb = ceph_vxattrcb_quota,
407 .exists_cb = ceph_vxattrcb_quota_exists,
408 .flags = VXATTR_FLAG_HIDDEN,
409 },
410 XATTR_QUOTA_FIELD(quota, max_bytes),
411 XATTR_QUOTA_FIELD(quota, max_files),
412 {
413 .name = "ceph.snap.btime",
414 .name_size = sizeof("ceph.snap.btime"),
415 .getxattr_cb = ceph_vxattrcb_snap_btime,
416 .exists_cb = ceph_vxattrcb_snap_btime_exists,
417 .flags = VXATTR_FLAG_READONLY,
418 },
419 {
420 .name = "ceph.caps",
421 .name_size = sizeof("ceph.caps"),
422 .getxattr_cb = ceph_vxattrcb_caps,
423 .exists_cb = NULL,
424 .flags = VXATTR_FLAG_HIDDEN,
425 },
426 { .name = NULL, 0 }
427};
428
429
430
431static struct ceph_vxattr ceph_file_vxattrs[] = {
432 {
433 .name = "ceph.file.layout",
434 .name_size = sizeof("ceph.file.layout"),
435 .getxattr_cb = ceph_vxattrcb_layout,
436 .exists_cb = ceph_vxattrcb_layout_exists,
437 .flags = VXATTR_FLAG_HIDDEN,
438 },
439 XATTR_LAYOUT_FIELD(file, layout, stripe_unit),
440 XATTR_LAYOUT_FIELD(file, layout, stripe_count),
441 XATTR_LAYOUT_FIELD(file, layout, object_size),
442 XATTR_LAYOUT_FIELD(file, layout, pool),
443 XATTR_LAYOUT_FIELD(file, layout, pool_namespace),
444 {
445 .name = "ceph.snap.btime",
446 .name_size = sizeof("ceph.snap.btime"),
447 .getxattr_cb = ceph_vxattrcb_snap_btime,
448 .exists_cb = ceph_vxattrcb_snap_btime_exists,
449 .flags = VXATTR_FLAG_READONLY,
450 },
451 {
452 .name = "ceph.caps",
453 .name_size = sizeof("ceph.caps"),
454 .getxattr_cb = ceph_vxattrcb_caps,
455 .exists_cb = NULL,
456 .flags = VXATTR_FLAG_HIDDEN,
457 },
458 { .name = NULL, 0 }
459};
460
461static struct ceph_vxattr ceph_common_vxattrs[] = {
462 {
463 .name = "ceph.cluster_fsid",
464 .name_size = sizeof("ceph.cluster_fsid"),
465 .getxattr_cb = ceph_vxattrcb_cluster_fsid,
466 .exists_cb = NULL,
467 .flags = VXATTR_FLAG_READONLY,
468 },
469 {
470 .name = "ceph.client_id",
471 .name_size = sizeof("ceph.client_id"),
472 .getxattr_cb = ceph_vxattrcb_client_id,
473 .exists_cb = NULL,
474 .flags = VXATTR_FLAG_READONLY,
475 },
476 { .name = NULL, 0 }
477};
478
479static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode)
480{
481 if (S_ISDIR(inode->i_mode))
482 return ceph_dir_vxattrs;
483 else if (S_ISREG(inode->i_mode))
484 return ceph_file_vxattrs;
485 return NULL;
486}
487
488static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode,
489 const char *name)
490{
491 struct ceph_vxattr *vxattr = ceph_inode_vxattrs(inode);
492
493 if (vxattr) {
494 while (vxattr->name) {
495 if (!strcmp(vxattr->name, name))
496 return vxattr;
497 vxattr++;
498 }
499 }
500
501 vxattr = ceph_common_vxattrs;
502 while (vxattr->name) {
503 if (!strcmp(vxattr->name, name))
504 return vxattr;
505 vxattr++;
506 }
507
508 return NULL;
509}
510
511static int __set_xattr(struct ceph_inode_info *ci,
512 const char *name, int name_len,
513 const char *val, int val_len,
514 int flags, int update_xattr,
515 struct ceph_inode_xattr **newxattr)
516{
517 struct rb_node **p;
518 struct rb_node *parent = NULL;
519 struct ceph_inode_xattr *xattr = NULL;
520 int c;
521 int new = 0;
522
523 p = &ci->i_xattrs.index.rb_node;
524 while (*p) {
525 parent = *p;
526 xattr = rb_entry(parent, struct ceph_inode_xattr, node);
527 c = strncmp(name, xattr->name, min(name_len, xattr->name_len));
528 if (c < 0)
529 p = &(*p)->rb_left;
530 else if (c > 0)
531 p = &(*p)->rb_right;
532 else {
533 if (name_len == xattr->name_len)
534 break;
535 else if (name_len < xattr->name_len)
536 p = &(*p)->rb_left;
537 else
538 p = &(*p)->rb_right;
539 }
540 xattr = NULL;
541 }
542
543 if (update_xattr) {
544 int err = 0;
545
546 if (xattr && (flags & XATTR_CREATE))
547 err = -EEXIST;
548 else if (!xattr && (flags & XATTR_REPLACE))
549 err = -ENODATA;
550 if (err) {
551 kfree(name);
552 kfree(val);
553 kfree(*newxattr);
554 return err;
555 }
556 if (update_xattr < 0) {
557 if (xattr)
558 __remove_xattr(ci, xattr);
559 kfree(name);
560 kfree(*newxattr);
561 return 0;
562 }
563 }
564
565 if (!xattr) {
566 new = 1;
567 xattr = *newxattr;
568 xattr->name = name;
569 xattr->name_len = name_len;
570 xattr->should_free_name = update_xattr;
571
572 ci->i_xattrs.count++;
573 dout("__set_xattr count=%d\n", ci->i_xattrs.count);
574 } else {
575 kfree(*newxattr);
576 *newxattr = NULL;
577 if (xattr->should_free_val)
578 kfree(xattr->val);
579
580 if (update_xattr) {
581 kfree(name);
582 name = xattr->name;
583 }
584 ci->i_xattrs.names_size -= xattr->name_len;
585 ci->i_xattrs.vals_size -= xattr->val_len;
586 }
587 ci->i_xattrs.names_size += name_len;
588 ci->i_xattrs.vals_size += val_len;
589 if (val)
590 xattr->val = val;
591 else
592 xattr->val = "";
593
594 xattr->val_len = val_len;
595 xattr->dirty = update_xattr;
596 xattr->should_free_val = (val && update_xattr);
597
598 if (new) {
599 rb_link_node(&xattr->node, parent, p);
600 rb_insert_color(&xattr->node, &ci->i_xattrs.index);
601 dout("__set_xattr_val p=%p\n", p);
602 }
603
604 dout("__set_xattr_val added %llx.%llx xattr %p %.*s=%.*s\n",
605 ceph_vinop(&ci->vfs_inode), xattr, name_len, name, val_len, val);
606
607 return 0;
608}
609
610static struct ceph_inode_xattr *__get_xattr(struct ceph_inode_info *ci,
611 const char *name)
612{
613 struct rb_node **p;
614 struct rb_node *parent = NULL;
615 struct ceph_inode_xattr *xattr = NULL;
616 int name_len = strlen(name);
617 int c;
618
619 p = &ci->i_xattrs.index.rb_node;
620 while (*p) {
621 parent = *p;
622 xattr = rb_entry(parent, struct ceph_inode_xattr, node);
623 c = strncmp(name, xattr->name, xattr->name_len);
624 if (c == 0 && name_len > xattr->name_len)
625 c = 1;
626 if (c < 0)
627 p = &(*p)->rb_left;
628 else if (c > 0)
629 p = &(*p)->rb_right;
630 else {
631 dout("__get_xattr %s: found %.*s\n", name,
632 xattr->val_len, xattr->val);
633 return xattr;
634 }
635 }
636
637 dout("__get_xattr %s: not found\n", name);
638
639 return NULL;
640}
641
642static void __free_xattr(struct ceph_inode_xattr *xattr)
643{
644 BUG_ON(!xattr);
645
646 if (xattr->should_free_name)
647 kfree(xattr->name);
648 if (xattr->should_free_val)
649 kfree(xattr->val);
650
651 kfree(xattr);
652}
653
654static int __remove_xattr(struct ceph_inode_info *ci,
655 struct ceph_inode_xattr *xattr)
656{
657 if (!xattr)
658 return -ENODATA;
659
660 rb_erase(&xattr->node, &ci->i_xattrs.index);
661
662 if (xattr->should_free_name)
663 kfree(xattr->name);
664 if (xattr->should_free_val)
665 kfree(xattr->val);
666
667 ci->i_xattrs.names_size -= xattr->name_len;
668 ci->i_xattrs.vals_size -= xattr->val_len;
669 ci->i_xattrs.count--;
670 kfree(xattr);
671
672 return 0;
673}
674
675static char *__copy_xattr_names(struct ceph_inode_info *ci,
676 char *dest)
677{
678 struct rb_node *p;
679 struct ceph_inode_xattr *xattr = NULL;
680
681 p = rb_first(&ci->i_xattrs.index);
682 dout("__copy_xattr_names count=%d\n", ci->i_xattrs.count);
683
684 while (p) {
685 xattr = rb_entry(p, struct ceph_inode_xattr, node);
686 memcpy(dest, xattr->name, xattr->name_len);
687 dest[xattr->name_len] = '\0';
688
689 dout("dest=%s %p (%s) (%d/%d)\n", dest, xattr, xattr->name,
690 xattr->name_len, ci->i_xattrs.names_size);
691
692 dest += xattr->name_len + 1;
693 p = rb_next(p);
694 }
695
696 return dest;
697}
698
699void __ceph_destroy_xattrs(struct ceph_inode_info *ci)
700{
701 struct rb_node *p, *tmp;
702 struct ceph_inode_xattr *xattr = NULL;
703
704 p = rb_first(&ci->i_xattrs.index);
705
706 dout("__ceph_destroy_xattrs p=%p\n", p);
707
708 while (p) {
709 xattr = rb_entry(p, struct ceph_inode_xattr, node);
710 tmp = p;
711 p = rb_next(tmp);
712 dout("__ceph_destroy_xattrs next p=%p (%.*s)\n", p,
713 xattr->name_len, xattr->name);
714 rb_erase(tmp, &ci->i_xattrs.index);
715
716 __free_xattr(xattr);
717 }
718
719 ci->i_xattrs.names_size = 0;
720 ci->i_xattrs.vals_size = 0;
721 ci->i_xattrs.index_version = 0;
722 ci->i_xattrs.count = 0;
723 ci->i_xattrs.index = RB_ROOT;
724}
725
726static int __build_xattrs(struct inode *inode)
727 __releases(ci->i_ceph_lock)
728 __acquires(ci->i_ceph_lock)
729{
730 u32 namelen;
731 u32 numattr = 0;
732 void *p, *end;
733 u32 len;
734 const char *name, *val;
735 struct ceph_inode_info *ci = ceph_inode(inode);
736 u64 xattr_version;
737 struct ceph_inode_xattr **xattrs = NULL;
738 int err = 0;
739 int i;
740
741 dout("__build_xattrs() len=%d\n",
742 ci->i_xattrs.blob ? (int)ci->i_xattrs.blob->vec.iov_len : 0);
743
744 if (ci->i_xattrs.index_version >= ci->i_xattrs.version)
745 return 0;
746
747 __ceph_destroy_xattrs(ci);
748
749start:
750
751 if (ci->i_xattrs.blob && ci->i_xattrs.blob->vec.iov_len > 4) {
752 p = ci->i_xattrs.blob->vec.iov_base;
753 end = p + ci->i_xattrs.blob->vec.iov_len;
754 ceph_decode_32_safe(&p, end, numattr, bad);
755 xattr_version = ci->i_xattrs.version;
756 spin_unlock(&ci->i_ceph_lock);
757
758 xattrs = kcalloc(numattr, sizeof(struct ceph_inode_xattr *),
759 GFP_NOFS);
760 err = -ENOMEM;
761 if (!xattrs)
762 goto bad_lock;
763
764 for (i = 0; i < numattr; i++) {
765 xattrs[i] = kmalloc(sizeof(struct ceph_inode_xattr),
766 GFP_NOFS);
767 if (!xattrs[i])
768 goto bad_lock;
769 }
770
771 spin_lock(&ci->i_ceph_lock);
772 if (ci->i_xattrs.version != xattr_version) {
773
774 for (i = 0; i < numattr; i++)
775 kfree(xattrs[i]);
776 kfree(xattrs);
777 xattrs = NULL;
778 goto start;
779 }
780 err = -EIO;
781 while (numattr--) {
782 ceph_decode_32_safe(&p, end, len, bad);
783 namelen = len;
784 name = p;
785 p += len;
786 ceph_decode_32_safe(&p, end, len, bad);
787 val = p;
788 p += len;
789
790 err = __set_xattr(ci, name, namelen, val, len,
791 0, 0, &xattrs[numattr]);
792
793 if (err < 0)
794 goto bad;
795 }
796 kfree(xattrs);
797 }
798 ci->i_xattrs.index_version = ci->i_xattrs.version;
799 ci->i_xattrs.dirty = false;
800
801 return err;
802bad_lock:
803 spin_lock(&ci->i_ceph_lock);
804bad:
805 if (xattrs) {
806 for (i = 0; i < numattr; i++)
807 kfree(xattrs[i]);
808 kfree(xattrs);
809 }
810 ci->i_xattrs.names_size = 0;
811 return err;
812}
813
814static int __get_required_blob_size(struct ceph_inode_info *ci, int name_size,
815 int val_size)
816{
817
818
819
820
821 int size = 4 + ci->i_xattrs.count*(4 + 4) +
822 ci->i_xattrs.names_size +
823 ci->i_xattrs.vals_size;
824 dout("__get_required_blob_size c=%d names.size=%d vals.size=%d\n",
825 ci->i_xattrs.count, ci->i_xattrs.names_size,
826 ci->i_xattrs.vals_size);
827
828 if (name_size)
829 size += 4 + 4 + name_size + val_size;
830
831 return size;
832}
833
834
835
836
837
838
839
840struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci)
841{
842 struct rb_node *p;
843 struct ceph_inode_xattr *xattr = NULL;
844 struct ceph_buffer *old_blob = NULL;
845 void *dest;
846
847 dout("__build_xattrs_blob %p\n", &ci->vfs_inode);
848 if (ci->i_xattrs.dirty) {
849 int need = __get_required_blob_size(ci, 0, 0);
850
851 BUG_ON(need > ci->i_xattrs.prealloc_blob->alloc_len);
852
853 p = rb_first(&ci->i_xattrs.index);
854 dest = ci->i_xattrs.prealloc_blob->vec.iov_base;
855
856 ceph_encode_32(&dest, ci->i_xattrs.count);
857 while (p) {
858 xattr = rb_entry(p, struct ceph_inode_xattr, node);
859
860 ceph_encode_32(&dest, xattr->name_len);
861 memcpy(dest, xattr->name, xattr->name_len);
862 dest += xattr->name_len;
863 ceph_encode_32(&dest, xattr->val_len);
864 memcpy(dest, xattr->val, xattr->val_len);
865 dest += xattr->val_len;
866
867 p = rb_next(p);
868 }
869
870
871 ci->i_xattrs.prealloc_blob->vec.iov_len =
872 dest - ci->i_xattrs.prealloc_blob->vec.iov_base;
873
874 if (ci->i_xattrs.blob)
875 old_blob = ci->i_xattrs.blob;
876 ci->i_xattrs.blob = ci->i_xattrs.prealloc_blob;
877 ci->i_xattrs.prealloc_blob = NULL;
878 ci->i_xattrs.dirty = false;
879 ci->i_xattrs.version++;
880 }
881
882 return old_blob;
883}
884
885static inline int __get_request_mask(struct inode *in) {
886 struct ceph_mds_request *req = current->journal_info;
887 int mask = 0;
888 if (req && req->r_target_inode == in) {
889 if (req->r_op == CEPH_MDS_OP_LOOKUP ||
890 req->r_op == CEPH_MDS_OP_LOOKUPINO ||
891 req->r_op == CEPH_MDS_OP_LOOKUPPARENT ||
892 req->r_op == CEPH_MDS_OP_GETATTR) {
893 mask = le32_to_cpu(req->r_args.getattr.mask);
894 } else if (req->r_op == CEPH_MDS_OP_OPEN ||
895 req->r_op == CEPH_MDS_OP_CREATE) {
896 mask = le32_to_cpu(req->r_args.open.mask);
897 }
898 }
899 return mask;
900}
901
902ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value,
903 size_t size)
904{
905 struct ceph_inode_info *ci = ceph_inode(inode);
906 struct ceph_inode_xattr *xattr;
907 struct ceph_vxattr *vxattr = NULL;
908 int req_mask;
909 ssize_t err;
910
911
912 vxattr = ceph_match_vxattr(inode, name);
913 if (vxattr) {
914 int mask = 0;
915 if (vxattr->flags & VXATTR_FLAG_RSTAT)
916 mask |= CEPH_STAT_RSTAT;
917 if (vxattr->flags & VXATTR_FLAG_DIRSTAT)
918 mask |= CEPH_CAP_FILE_SHARED;
919 err = ceph_do_getattr(inode, mask, true);
920 if (err)
921 return err;
922 err = -ENODATA;
923 if (!(vxattr->exists_cb && !vxattr->exists_cb(ci))) {
924 err = vxattr->getxattr_cb(ci, value, size);
925 if (size && size < err)
926 err = -ERANGE;
927 }
928 return err;
929 }
930
931 req_mask = __get_request_mask(inode);
932
933 spin_lock(&ci->i_ceph_lock);
934 dout("getxattr %p name '%s' ver=%lld index_ver=%lld\n", inode, name,
935 ci->i_xattrs.version, ci->i_xattrs.index_version);
936
937 if (ci->i_xattrs.version == 0 ||
938 !((req_mask & CEPH_CAP_XATTR_SHARED) ||
939 __ceph_caps_issued_mask_metric(ci, CEPH_CAP_XATTR_SHARED, 1))) {
940 spin_unlock(&ci->i_ceph_lock);
941
942
943 if (current->journal_info) {
944 pr_warn_ratelimited("sync getxattr %p "
945 "during filling trace\n", inode);
946 return -EBUSY;
947 }
948
949
950 err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR, true);
951 if (err)
952 return err;
953 spin_lock(&ci->i_ceph_lock);
954 }
955
956 err = __build_xattrs(inode);
957 if (err < 0)
958 goto out;
959
960 err = -ENODATA;
961 xattr = __get_xattr(ci, name);
962 if (!xattr)
963 goto out;
964
965 err = -ERANGE;
966 if (size && size < xattr->val_len)
967 goto out;
968
969 err = xattr->val_len;
970 if (size == 0)
971 goto out;
972
973 memcpy(value, xattr->val, xattr->val_len);
974
975 if (current->journal_info &&
976 !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) &&
977 security_ismaclabel(name + XATTR_SECURITY_PREFIX_LEN))
978 ci->i_ceph_flags |= CEPH_I_SEC_INITED;
979out:
980 spin_unlock(&ci->i_ceph_lock);
981 return err;
982}
983
984ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
985{
986 struct inode *inode = d_inode(dentry);
987 struct ceph_inode_info *ci = ceph_inode(inode);
988 bool len_only = (size == 0);
989 u32 namelen;
990 int err;
991
992 spin_lock(&ci->i_ceph_lock);
993 dout("listxattr %p ver=%lld index_ver=%lld\n", inode,
994 ci->i_xattrs.version, ci->i_xattrs.index_version);
995
996 if (ci->i_xattrs.version == 0 ||
997 !__ceph_caps_issued_mask_metric(ci, CEPH_CAP_XATTR_SHARED, 1)) {
998 spin_unlock(&ci->i_ceph_lock);
999 err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR, true);
1000 if (err)
1001 return err;
1002 spin_lock(&ci->i_ceph_lock);
1003 }
1004
1005 err = __build_xattrs(inode);
1006 if (err < 0)
1007 goto out;
1008
1009
1010 namelen = ci->i_xattrs.names_size + ci->i_xattrs.count;
1011 if (!len_only) {
1012 if (namelen > size) {
1013 err = -ERANGE;
1014 goto out;
1015 }
1016 names = __copy_xattr_names(ci, names);
1017 size -= namelen;
1018 }
1019 err = namelen;
1020out:
1021 spin_unlock(&ci->i_ceph_lock);
1022 return err;
1023}
1024
1025static int ceph_sync_setxattr(struct inode *inode, const char *name,
1026 const char *value, size_t size, int flags)
1027{
1028 struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb);
1029 struct ceph_inode_info *ci = ceph_inode(inode);
1030 struct ceph_mds_request *req;
1031 struct ceph_mds_client *mdsc = fsc->mdsc;
1032 struct ceph_osd_client *osdc = &fsc->client->osdc;
1033 struct ceph_pagelist *pagelist = NULL;
1034 int op = CEPH_MDS_OP_SETXATTR;
1035 int err;
1036
1037 if (size > 0) {
1038
1039 pagelist = ceph_pagelist_alloc(GFP_NOFS);
1040 if (!pagelist)
1041 return -ENOMEM;
1042
1043 err = ceph_pagelist_append(pagelist, value, size);
1044 if (err)
1045 goto out;
1046 } else if (!value) {
1047 if (flags & CEPH_XATTR_REPLACE)
1048 op = CEPH_MDS_OP_RMXATTR;
1049 else
1050 flags |= CEPH_XATTR_REMOVE;
1051 }
1052
1053 dout("setxattr value=%.*s\n", (int)size, value);
1054
1055
1056 req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
1057 if (IS_ERR(req)) {
1058 err = PTR_ERR(req);
1059 goto out;
1060 }
1061
1062 req->r_path2 = kstrdup(name, GFP_NOFS);
1063 if (!req->r_path2) {
1064 ceph_mdsc_put_request(req);
1065 err = -ENOMEM;
1066 goto out;
1067 }
1068
1069 if (op == CEPH_MDS_OP_SETXATTR) {
1070 req->r_args.setxattr.flags = cpu_to_le32(flags);
1071 req->r_args.setxattr.osdmap_epoch =
1072 cpu_to_le32(osdc->osdmap->epoch);
1073 req->r_pagelist = pagelist;
1074 pagelist = NULL;
1075 }
1076
1077 req->r_inode = inode;
1078 ihold(inode);
1079 req->r_num_caps = 1;
1080 req->r_inode_drop = CEPH_CAP_XATTR_SHARED;
1081
1082 dout("xattr.ver (before): %lld\n", ci->i_xattrs.version);
1083 err = ceph_mdsc_do_request(mdsc, NULL, req);
1084 ceph_mdsc_put_request(req);
1085 dout("xattr.ver (after): %lld\n", ci->i_xattrs.version);
1086
1087out:
1088 if (pagelist)
1089 ceph_pagelist_release(pagelist);
1090 return err;
1091}
1092
1093int __ceph_setxattr(struct inode *inode, const char *name,
1094 const void *value, size_t size, int flags)
1095{
1096 struct ceph_vxattr *vxattr;
1097 struct ceph_inode_info *ci = ceph_inode(inode);
1098 struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
1099 struct ceph_cap_flush *prealloc_cf = NULL;
1100 struct ceph_buffer *old_blob = NULL;
1101 int issued;
1102 int err;
1103 int dirty = 0;
1104 int name_len = strlen(name);
1105 int val_len = size;
1106 char *newname = NULL;
1107 char *newval = NULL;
1108 struct ceph_inode_xattr *xattr = NULL;
1109 int required_blob_size;
1110 bool check_realm = false;
1111 bool lock_snap_rwsem = false;
1112
1113 if (ceph_snap(inode) != CEPH_NOSNAP)
1114 return -EROFS;
1115
1116 vxattr = ceph_match_vxattr(inode, name);
1117 if (vxattr) {
1118 if (vxattr->flags & VXATTR_FLAG_READONLY)
1119 return -EOPNOTSUPP;
1120 if (value && !strncmp(vxattr->name, "ceph.quota", 10))
1121 check_realm = true;
1122 }
1123
1124
1125 if (!strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN))
1126 goto do_sync_unlocked;
1127
1128
1129 err = -ENOMEM;
1130 newname = kmemdup(name, name_len + 1, GFP_NOFS);
1131 if (!newname)
1132 goto out;
1133
1134 if (val_len) {
1135 newval = kmemdup(value, val_len, GFP_NOFS);
1136 if (!newval)
1137 goto out;
1138 }
1139
1140 xattr = kmalloc(sizeof(struct ceph_inode_xattr), GFP_NOFS);
1141 if (!xattr)
1142 goto out;
1143
1144 prealloc_cf = ceph_alloc_cap_flush();
1145 if (!prealloc_cf)
1146 goto out;
1147
1148 spin_lock(&ci->i_ceph_lock);
1149retry:
1150 issued = __ceph_caps_issued(ci, NULL);
1151 if (ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL))
1152 goto do_sync;
1153
1154 if (!lock_snap_rwsem && !ci->i_head_snapc) {
1155 lock_snap_rwsem = true;
1156 if (!down_read_trylock(&mdsc->snap_rwsem)) {
1157 spin_unlock(&ci->i_ceph_lock);
1158 down_read(&mdsc->snap_rwsem);
1159 spin_lock(&ci->i_ceph_lock);
1160 goto retry;
1161 }
1162 }
1163
1164 dout("setxattr %p name '%s' issued %s\n", inode, name,
1165 ceph_cap_string(issued));
1166 __build_xattrs(inode);
1167
1168 required_blob_size = __get_required_blob_size(ci, name_len, val_len);
1169
1170 if (!ci->i_xattrs.prealloc_blob ||
1171 required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) {
1172 struct ceph_buffer *blob;
1173
1174 spin_unlock(&ci->i_ceph_lock);
1175 ceph_buffer_put(old_blob);
1176 dout(" pre-allocating new blob size=%d\n", required_blob_size);
1177 blob = ceph_buffer_new(required_blob_size, GFP_NOFS);
1178 if (!blob)
1179 goto do_sync_unlocked;
1180 spin_lock(&ci->i_ceph_lock);
1181
1182 if (ci->i_xattrs.prealloc_blob)
1183 old_blob = ci->i_xattrs.prealloc_blob;
1184 ci->i_xattrs.prealloc_blob = blob;
1185 goto retry;
1186 }
1187
1188 err = __set_xattr(ci, newname, name_len, newval, val_len,
1189 flags, value ? 1 : -1, &xattr);
1190
1191 if (!err) {
1192 dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL,
1193 &prealloc_cf);
1194 ci->i_xattrs.dirty = true;
1195 inode->i_ctime = current_time(inode);
1196 }
1197
1198 spin_unlock(&ci->i_ceph_lock);
1199 ceph_buffer_put(old_blob);
1200 if (lock_snap_rwsem)
1201 up_read(&mdsc->snap_rwsem);
1202 if (dirty)
1203 __mark_inode_dirty(inode, dirty);
1204 ceph_free_cap_flush(prealloc_cf);
1205 return err;
1206
1207do_sync:
1208 spin_unlock(&ci->i_ceph_lock);
1209do_sync_unlocked:
1210 if (lock_snap_rwsem)
1211 up_read(&mdsc->snap_rwsem);
1212
1213
1214 if (current->journal_info) {
1215 pr_warn_ratelimited("sync setxattr %p "
1216 "during filling trace\n", inode);
1217 err = -EBUSY;
1218 } else {
1219 err = ceph_sync_setxattr(inode, name, value, size, flags);
1220 if (err >= 0 && check_realm) {
1221
1222 spin_lock(&ci->i_ceph_lock);
1223 if ((ci->i_max_files || ci->i_max_bytes) &&
1224 !(ci->i_snap_realm &&
1225 ci->i_snap_realm->ino == ci->i_vino.ino))
1226 err = -EOPNOTSUPP;
1227 spin_unlock(&ci->i_ceph_lock);
1228 }
1229 }
1230out:
1231 ceph_free_cap_flush(prealloc_cf);
1232 kfree(newname);
1233 kfree(newval);
1234 kfree(xattr);
1235 return err;
1236}
1237
1238static int ceph_get_xattr_handler(const struct xattr_handler *handler,
1239 struct dentry *dentry, struct inode *inode,
1240 const char *name, void *value, size_t size)
1241{
1242 if (!ceph_is_valid_xattr(name))
1243 return -EOPNOTSUPP;
1244 return __ceph_getxattr(inode, name, value, size);
1245}
1246
1247static int ceph_set_xattr_handler(const struct xattr_handler *handler,
1248 struct dentry *unused, struct inode *inode,
1249 const char *name, const void *value,
1250 size_t size, int flags)
1251{
1252 if (!ceph_is_valid_xattr(name))
1253 return -EOPNOTSUPP;
1254 return __ceph_setxattr(inode, name, value, size, flags);
1255}
1256
1257static const struct xattr_handler ceph_other_xattr_handler = {
1258 .prefix = "",
1259 .get = ceph_get_xattr_handler,
1260 .set = ceph_set_xattr_handler,
1261};
1262
1263#ifdef CONFIG_SECURITY
1264bool ceph_security_xattr_wanted(struct inode *in)
1265{
1266 return in->i_security != NULL;
1267}
1268
1269bool ceph_security_xattr_deadlock(struct inode *in)
1270{
1271 struct ceph_inode_info *ci;
1272 bool ret;
1273 if (!in->i_security)
1274 return false;
1275 ci = ceph_inode(in);
1276 spin_lock(&ci->i_ceph_lock);
1277 ret = !(ci->i_ceph_flags & CEPH_I_SEC_INITED) &&
1278 !(ci->i_xattrs.version > 0 &&
1279 __ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0));
1280 spin_unlock(&ci->i_ceph_lock);
1281 return ret;
1282}
1283
1284#ifdef CONFIG_CEPH_FS_SECURITY_LABEL
1285int ceph_security_init_secctx(struct dentry *dentry, umode_t mode,
1286 struct ceph_acl_sec_ctx *as_ctx)
1287{
1288 struct ceph_pagelist *pagelist = as_ctx->pagelist;
1289 const char *name;
1290 size_t name_len;
1291 int err;
1292
1293 err = security_dentry_init_security(dentry, mode, &dentry->d_name,
1294 &as_ctx->sec_ctx,
1295 &as_ctx->sec_ctxlen);
1296 if (err < 0) {
1297 WARN_ON_ONCE(err != -EOPNOTSUPP);
1298 err = 0;
1299 goto out;
1300 }
1301
1302 err = -ENOMEM;
1303 if (!pagelist) {
1304 pagelist = ceph_pagelist_alloc(GFP_KERNEL);
1305 if (!pagelist)
1306 goto out;
1307 err = ceph_pagelist_reserve(pagelist, PAGE_SIZE);
1308 if (err)
1309 goto out;
1310 ceph_pagelist_encode_32(pagelist, 1);
1311 }
1312
1313
1314
1315
1316
1317
1318 name = XATTR_NAME_SELINUX;
1319 name_len = strlen(name);
1320 err = ceph_pagelist_reserve(pagelist,
1321 4 * 2 + name_len + as_ctx->sec_ctxlen);
1322 if (err)
1323 goto out;
1324
1325 if (as_ctx->pagelist) {
1326
1327 BUG_ON(pagelist->length <= sizeof(__le32));
1328 if (list_is_singular(&pagelist->head)) {
1329 le32_add_cpu((__le32*)pagelist->mapped_tail, 1);
1330 } else {
1331 struct page *page = list_first_entry(&pagelist->head,
1332 struct page, lru);
1333 void *addr = kmap_atomic(page);
1334 le32_add_cpu((__le32*)addr, 1);
1335 kunmap_atomic(addr);
1336 }
1337 } else {
1338 as_ctx->pagelist = pagelist;
1339 }
1340
1341 ceph_pagelist_encode_32(pagelist, name_len);
1342 ceph_pagelist_append(pagelist, name, name_len);
1343
1344 ceph_pagelist_encode_32(pagelist, as_ctx->sec_ctxlen);
1345 ceph_pagelist_append(pagelist, as_ctx->sec_ctx, as_ctx->sec_ctxlen);
1346
1347 err = 0;
1348out:
1349 if (pagelist && !as_ctx->pagelist)
1350 ceph_pagelist_release(pagelist);
1351 return err;
1352}
1353#endif
1354#endif
1355
1356void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx)
1357{
1358#ifdef CONFIG_CEPH_FS_POSIX_ACL
1359 posix_acl_release(as_ctx->acl);
1360 posix_acl_release(as_ctx->default_acl);
1361#endif
1362#ifdef CONFIG_CEPH_FS_SECURITY_LABEL
1363 security_release_secctx(as_ctx->sec_ctx, as_ctx->sec_ctxlen);
1364#endif
1365 if (as_ctx->pagelist)
1366 ceph_pagelist_release(as_ctx->pagelist);
1367}
1368
1369
1370
1371
1372
1373const struct xattr_handler *ceph_xattr_handlers[] = {
1374#ifdef CONFIG_CEPH_FS_POSIX_ACL
1375 &posix_acl_access_xattr_handler,
1376 &posix_acl_default_xattr_handler,
1377#endif
1378 &ceph_other_xattr_handler,
1379 NULL,
1380};
1381
