Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
b3b94faa DT |
10 | #include <linux/slab.h> |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
14 | #include <linux/xattr.h> | |
5c676f6d | 15 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
16 | #include <asm/uaccess.h> |
17 | ||
18 | #include "gfs2.h" | |
5c676f6d | 19 | #include "incore.h" |
b3b94faa | 20 | #include "acl.h" |
b3b94faa DT |
21 | #include "eattr.h" |
22 | #include "glock.h" | |
23 | #include "inode.h" | |
24 | #include "meta_io.h" | |
25 | #include "quota.h" | |
26 | #include "rgrp.h" | |
27 | #include "trans.h" | |
5c676f6d | 28 | #include "util.h" |
b3b94faa DT |
29 | |
30 | /** | |
31 | * ea_calc_size - returns the acutal number of bytes the request will take up | |
32 | * (not counting any unstuffed data blocks) | |
33 | * @sdp: | |
34 | * @er: | |
35 | * @size: | |
36 | * | |
37 | * Returns: 1 if the EA should be stuffed | |
38 | */ | |
39 | ||
40b78a32 | 40 | static int ea_calc_size(struct gfs2_sbd *sdp, unsigned int nsize, size_t dsize, |
b3b94faa DT |
41 | unsigned int *size) |
42 | { | |
40b78a32 SW |
43 | unsigned int jbsize = sdp->sd_jbsize; |
44 | ||
45 | /* Stuffed */ | |
46 | *size = ALIGN(sizeof(struct gfs2_ea_header) + nsize + dsize, 8); | |
47 | ||
48 | if (*size <= jbsize) | |
b3b94faa DT |
49 | return 1; |
50 | ||
40b78a32 SW |
51 | /* Unstuffed */ |
52 | *size = ALIGN(sizeof(struct gfs2_ea_header) + nsize + | |
53 | (sizeof(__be64) * DIV_ROUND_UP(dsize, jbsize)), 8); | |
b3b94faa DT |
54 | |
55 | return 0; | |
56 | } | |
57 | ||
40b78a32 | 58 | static int ea_check_size(struct gfs2_sbd *sdp, unsigned int nsize, size_t dsize) |
b3b94faa DT |
59 | { |
60 | unsigned int size; | |
61 | ||
40b78a32 | 62 | if (dsize > GFS2_EA_MAX_DATA_LEN) |
b3b94faa DT |
63 | return -ERANGE; |
64 | ||
40b78a32 | 65 | ea_calc_size(sdp, nsize, dsize, &size); |
b3b94faa DT |
66 | |
67 | /* This can only happen with 512 byte blocks */ | |
68 | if (size > sdp->sd_jbsize) | |
69 | return -ERANGE; | |
70 | ||
71 | return 0; | |
72 | } | |
73 | ||
cca195c5 | 74 | typedef int (*ea_call_t) (struct gfs2_inode *ip, struct buffer_head *bh, |
b3b94faa | 75 | struct gfs2_ea_header *ea, |
cca195c5 | 76 | struct gfs2_ea_header *prev, void *private); |
b3b94faa DT |
77 | |
78 | static int ea_foreach_i(struct gfs2_inode *ip, struct buffer_head *bh, | |
79 | ea_call_t ea_call, void *data) | |
80 | { | |
81 | struct gfs2_ea_header *ea, *prev = NULL; | |
82 | int error = 0; | |
83 | ||
feaa7bba | 84 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_EA)) |
b3b94faa DT |
85 | return -EIO; |
86 | ||
87 | for (ea = GFS2_EA_BH2FIRST(bh);; prev = ea, ea = GFS2_EA2NEXT(ea)) { | |
88 | if (!GFS2_EA_REC_LEN(ea)) | |
89 | goto fail; | |
cca195c5 SW |
90 | if (!(bh->b_data <= (char *)ea && (char *)GFS2_EA2NEXT(ea) <= |
91 | bh->b_data + bh->b_size)) | |
b3b94faa DT |
92 | goto fail; |
93 | if (!GFS2_EATYPE_VALID(ea->ea_type)) | |
94 | goto fail; | |
95 | ||
96 | error = ea_call(ip, bh, ea, prev, data); | |
97 | if (error) | |
98 | return error; | |
99 | ||
100 | if (GFS2_EA_IS_LAST(ea)) { | |
101 | if ((char *)GFS2_EA2NEXT(ea) != | |
102 | bh->b_data + bh->b_size) | |
103 | goto fail; | |
104 | break; | |
105 | } | |
106 | } | |
107 | ||
108 | return error; | |
109 | ||
a91ea69f | 110 | fail: |
b3b94faa DT |
111 | gfs2_consist_inode(ip); |
112 | return -EIO; | |
113 | } | |
114 | ||
115 | static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data) | |
116 | { | |
117 | struct buffer_head *bh, *eabh; | |
b44b84d7 | 118 | __be64 *eablk, *end; |
b3b94faa DT |
119 | int error; |
120 | ||
3767ac21 | 121 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &bh); |
b3b94faa DT |
122 | if (error) |
123 | return error; | |
124 | ||
383f01fb | 125 | if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) { |
b3b94faa DT |
126 | error = ea_foreach_i(ip, bh, ea_call, data); |
127 | goto out; | |
128 | } | |
129 | ||
feaa7bba | 130 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_IN)) { |
b3b94faa DT |
131 | error = -EIO; |
132 | goto out; | |
133 | } | |
134 | ||
b44b84d7 | 135 | eablk = (__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header)); |
feaa7bba | 136 | end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs; |
b3b94faa DT |
137 | |
138 | for (; eablk < end; eablk++) { | |
cd915493 | 139 | u64 bn; |
b3b94faa DT |
140 | |
141 | if (!*eablk) | |
142 | break; | |
143 | bn = be64_to_cpu(*eablk); | |
144 | ||
7276b3b0 | 145 | error = gfs2_meta_read(ip->i_gl, bn, DIO_WAIT, &eabh); |
b3b94faa DT |
146 | if (error) |
147 | break; | |
148 | error = ea_foreach_i(ip, eabh, ea_call, data); | |
149 | brelse(eabh); | |
150 | if (error) | |
151 | break; | |
152 | } | |
a91ea69f | 153 | out: |
b3b94faa | 154 | brelse(bh); |
b3b94faa DT |
155 | return error; |
156 | } | |
157 | ||
158 | struct ea_find { | |
40b78a32 SW |
159 | int type; |
160 | const char *name; | |
161 | size_t namel; | |
b3b94faa DT |
162 | struct gfs2_ea_location *ef_el; |
163 | }; | |
164 | ||
165 | static int ea_find_i(struct gfs2_inode *ip, struct buffer_head *bh, | |
166 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
167 | void *private) | |
168 | { | |
169 | struct ea_find *ef = private; | |
b3b94faa DT |
170 | |
171 | if (ea->ea_type == GFS2_EATYPE_UNUSED) | |
172 | return 0; | |
173 | ||
40b78a32 SW |
174 | if (ea->ea_type == ef->type) { |
175 | if (ea->ea_name_len == ef->namel && | |
176 | !memcmp(GFS2_EA2NAME(ea), ef->name, ea->ea_name_len)) { | |
b3b94faa DT |
177 | struct gfs2_ea_location *el = ef->ef_el; |
178 | get_bh(bh); | |
179 | el->el_bh = bh; | |
180 | el->el_ea = ea; | |
181 | el->el_prev = prev; | |
182 | return 1; | |
183 | } | |
184 | } | |
185 | ||
b3b94faa DT |
186 | return 0; |
187 | } | |
188 | ||
40b78a32 | 189 | int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name, |
b3b94faa DT |
190 | struct gfs2_ea_location *el) |
191 | { | |
192 | struct ea_find ef; | |
193 | int error; | |
194 | ||
40b78a32 SW |
195 | ef.type = type; |
196 | ef.name = name; | |
197 | ef.namel = strlen(name); | |
b3b94faa DT |
198 | ef.ef_el = el; |
199 | ||
200 | memset(el, 0, sizeof(struct gfs2_ea_location)); | |
201 | ||
202 | error = ea_foreach(ip, ea_find_i, &ef); | |
203 | if (error > 0) | |
204 | return 0; | |
205 | ||
206 | return error; | |
207 | } | |
208 | ||
209 | /** | |
210 | * ea_dealloc_unstuffed - | |
211 | * @ip: | |
212 | * @bh: | |
213 | * @ea: | |
214 | * @prev: | |
215 | * @private: | |
216 | * | |
217 | * Take advantage of the fact that all unstuffed blocks are | |
218 | * allocated from the same RG. But watch, this may not always | |
219 | * be true. | |
220 | * | |
221 | * Returns: errno | |
222 | */ | |
223 | ||
224 | static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, | |
225 | struct gfs2_ea_header *ea, | |
226 | struct gfs2_ea_header *prev, void *private) | |
227 | { | |
228 | int *leave = private; | |
feaa7bba | 229 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
230 | struct gfs2_rgrpd *rgd; |
231 | struct gfs2_holder rg_gh; | |
232 | struct buffer_head *dibh; | |
b44b84d7 AV |
233 | __be64 *dataptrs; |
234 | u64 bn = 0; | |
cd915493 | 235 | u64 bstart = 0; |
b3b94faa DT |
236 | unsigned int blen = 0; |
237 | unsigned int blks = 0; | |
238 | unsigned int x; | |
239 | int error; | |
240 | ||
241 | if (GFS2_EA_IS_STUFFED(ea)) | |
242 | return 0; | |
243 | ||
244 | dataptrs = GFS2_EA2DATAPTRS(ea); | |
cca195c5 | 245 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { |
b3b94faa DT |
246 | if (*dataptrs) { |
247 | blks++; | |
248 | bn = be64_to_cpu(*dataptrs); | |
249 | } | |
cca195c5 | 250 | } |
b3b94faa DT |
251 | if (!blks) |
252 | return 0; | |
253 | ||
254 | rgd = gfs2_blk2rgrpd(sdp, bn); | |
255 | if (!rgd) { | |
256 | gfs2_consist_inode(ip); | |
257 | return -EIO; | |
258 | } | |
259 | ||
260 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &rg_gh); | |
261 | if (error) | |
262 | return error; | |
263 | ||
bb8d8a6f | 264 | error = gfs2_trans_begin(sdp, rgd->rd_length + RES_DINODE + |
cca195c5 | 265 | RES_EATTR + RES_STATFS + RES_QUOTA, blks); |
b3b94faa DT |
266 | if (error) |
267 | goto out_gunlock; | |
268 | ||
d4e9c4c3 | 269 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
b3b94faa DT |
270 | |
271 | dataptrs = GFS2_EA2DATAPTRS(ea); | |
272 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { | |
273 | if (!*dataptrs) | |
274 | break; | |
275 | bn = be64_to_cpu(*dataptrs); | |
276 | ||
277 | if (bstart + blen == bn) | |
278 | blen++; | |
279 | else { | |
280 | if (bstart) | |
281 | gfs2_free_meta(ip, bstart, blen); | |
282 | bstart = bn; | |
283 | blen = 1; | |
284 | } | |
285 | ||
286 | *dataptrs = 0; | |
77658aad | 287 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
288 | } |
289 | if (bstart) | |
290 | gfs2_free_meta(ip, bstart, blen); | |
291 | ||
292 | if (prev && !leave) { | |
cd915493 | 293 | u32 len; |
b3b94faa DT |
294 | |
295 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
296 | prev->ea_rec_len = cpu_to_be32(len); | |
297 | ||
298 | if (GFS2_EA_IS_LAST(ea)) | |
299 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
300 | } else { | |
301 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
302 | ea->ea_num_ptrs = 0; | |
303 | } | |
304 | ||
305 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
306 | if (!error) { | |
4bd91ba1 | 307 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 308 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 309 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
310 | brelse(dibh); |
311 | } | |
312 | ||
313 | gfs2_trans_end(sdp); | |
314 | ||
a91ea69f | 315 | out_gunlock: |
b3b94faa | 316 | gfs2_glock_dq_uninit(&rg_gh); |
b3b94faa DT |
317 | return error; |
318 | } | |
319 | ||
320 | static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, | |
321 | struct gfs2_ea_header *ea, | |
322 | struct gfs2_ea_header *prev, int leave) | |
323 | { | |
324 | struct gfs2_alloc *al; | |
325 | int error; | |
326 | ||
327 | al = gfs2_alloc_get(ip); | |
182fe5ab CG |
328 | if (!al) |
329 | return -ENOMEM; | |
b3b94faa DT |
330 | |
331 | error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
332 | if (error) | |
333 | goto out_alloc; | |
334 | ||
feaa7bba | 335 | error = gfs2_rindex_hold(GFS2_SB(&ip->i_inode), &al->al_ri_gh); |
b3b94faa DT |
336 | if (error) |
337 | goto out_quota; | |
338 | ||
cca195c5 | 339 | error = ea_dealloc_unstuffed(ip, bh, ea, prev, (leave) ? &error : NULL); |
b3b94faa DT |
340 | |
341 | gfs2_glock_dq_uninit(&al->al_ri_gh); | |
342 | ||
a91ea69f | 343 | out_quota: |
b3b94faa | 344 | gfs2_quota_unhold(ip); |
a91ea69f | 345 | out_alloc: |
b3b94faa | 346 | gfs2_alloc_put(ip); |
b3b94faa DT |
347 | return error; |
348 | } | |
349 | ||
b3b94faa DT |
350 | struct ea_list { |
351 | struct gfs2_ea_request *ei_er; | |
352 | unsigned int ei_size; | |
353 | }; | |
354 | ||
40b78a32 SW |
355 | static inline unsigned int gfs2_ea_strlen(struct gfs2_ea_header *ea) |
356 | { | |
357 | switch (ea->ea_type) { | |
358 | case GFS2_EATYPE_USR: | |
359 | return 5 + ea->ea_name_len + 1; | |
360 | case GFS2_EATYPE_SYS: | |
361 | return 7 + ea->ea_name_len + 1; | |
362 | case GFS2_EATYPE_SECURITY: | |
363 | return 9 + ea->ea_name_len + 1; | |
364 | default: | |
365 | return 0; | |
366 | } | |
367 | } | |
368 | ||
b3b94faa DT |
369 | static int ea_list_i(struct gfs2_inode *ip, struct buffer_head *bh, |
370 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
371 | void *private) | |
372 | { | |
373 | struct ea_list *ei = private; | |
374 | struct gfs2_ea_request *er = ei->ei_er; | |
639b6d79 | 375 | unsigned int ea_size = gfs2_ea_strlen(ea); |
b3b94faa DT |
376 | |
377 | if (ea->ea_type == GFS2_EATYPE_UNUSED) | |
378 | return 0; | |
379 | ||
380 | if (er->er_data_len) { | |
01eb7c07 SW |
381 | char *prefix = NULL; |
382 | unsigned int l = 0; | |
b3b94faa DT |
383 | char c = 0; |
384 | ||
385 | if (ei->ei_size + ea_size > er->er_data_len) | |
386 | return -ERANGE; | |
387 | ||
639b6d79 RH |
388 | switch (ea->ea_type) { |
389 | case GFS2_EATYPE_USR: | |
b3b94faa DT |
390 | prefix = "user."; |
391 | l = 5; | |
639b6d79 RH |
392 | break; |
393 | case GFS2_EATYPE_SYS: | |
b3b94faa DT |
394 | prefix = "system."; |
395 | l = 7; | |
639b6d79 RH |
396 | break; |
397 | case GFS2_EATYPE_SECURITY: | |
398 | prefix = "security."; | |
399 | l = 9; | |
400 | break; | |
b3b94faa DT |
401 | } |
402 | ||
01eb7c07 SW |
403 | BUG_ON(l == 0); |
404 | ||
90cdd208 SW |
405 | memcpy(er->er_data + ei->ei_size, prefix, l); |
406 | memcpy(er->er_data + ei->ei_size + l, GFS2_EA2NAME(ea), | |
b3b94faa | 407 | ea->ea_name_len); |
90cdd208 | 408 | memcpy(er->er_data + ei->ei_size + ea_size - 1, &c, 1); |
b3b94faa DT |
409 | } |
410 | ||
411 | ei->ei_size += ea_size; | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | /** | |
40b78a32 SW |
417 | * gfs2_listxattr - List gfs2 extended attributes |
418 | * @dentry: The dentry whose inode we are interested in | |
419 | * @buffer: The buffer to write the results | |
420 | * @size: The size of the buffer | |
b3b94faa DT |
421 | * |
422 | * Returns: actual size of data on success, -errno on error | |
423 | */ | |
424 | ||
40b78a32 | 425 | ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) |
b3b94faa | 426 | { |
40b78a32 SW |
427 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
428 | struct gfs2_ea_request er; | |
b3b94faa DT |
429 | struct gfs2_holder i_gh; |
430 | int error; | |
431 | ||
40b78a32 SW |
432 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
433 | if (size) { | |
434 | er.er_data = buffer; | |
435 | er.er_data_len = size; | |
b3b94faa DT |
436 | } |
437 | ||
cca195c5 | 438 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); |
b3b94faa DT |
439 | if (error) |
440 | return error; | |
441 | ||
3767ac21 | 442 | if (ip->i_eattr) { |
40b78a32 | 443 | struct ea_list ei = { .ei_er = &er, .ei_size = 0 }; |
b3b94faa DT |
444 | |
445 | error = ea_foreach(ip, ea_list_i, &ei); | |
446 | if (!error) | |
447 | error = ei.ei_size; | |
448 | } | |
449 | ||
450 | gfs2_glock_dq_uninit(&i_gh); | |
451 | ||
452 | return error; | |
453 | } | |
454 | ||
455 | /** | |
456 | * ea_get_unstuffed - actually copies the unstuffed data into the | |
457 | * request buffer | |
cca195c5 SW |
458 | * @ip: The GFS2 inode |
459 | * @ea: The extended attribute header structure | |
460 | * @data: The data to be copied | |
b3b94faa DT |
461 | * |
462 | * Returns: errno | |
463 | */ | |
464 | ||
465 | static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea, | |
466 | char *data) | |
467 | { | |
feaa7bba | 468 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
469 | struct buffer_head **bh; |
470 | unsigned int amount = GFS2_EA_DATA_LEN(ea); | |
5c676f6d | 471 | unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); |
b44b84d7 | 472 | __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
473 | unsigned int x; |
474 | int error = 0; | |
475 | ||
16c5f06f | 476 | bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); |
b3b94faa DT |
477 | if (!bh) |
478 | return -ENOMEM; | |
479 | ||
480 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 SW |
481 | error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, |
482 | bh + x); | |
b3b94faa DT |
483 | if (error) { |
484 | while (x--) | |
485 | brelse(bh[x]); | |
486 | goto out; | |
487 | } | |
488 | dataptrs++; | |
489 | } | |
490 | ||
491 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 | 492 | error = gfs2_meta_wait(sdp, bh[x]); |
b3b94faa DT |
493 | if (error) { |
494 | for (; x < nptrs; x++) | |
495 | brelse(bh[x]); | |
496 | goto out; | |
497 | } | |
498 | if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) { | |
499 | for (; x < nptrs; x++) | |
500 | brelse(bh[x]); | |
501 | error = -EIO; | |
502 | goto out; | |
503 | } | |
504 | ||
cca195c5 | 505 | memcpy(data, bh[x]->b_data + sizeof(struct gfs2_meta_header), |
b3b94faa DT |
506 | (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize); |
507 | ||
508 | amount -= sdp->sd_jbsize; | |
509 | data += sdp->sd_jbsize; | |
510 | ||
511 | brelse(bh[x]); | |
512 | } | |
513 | ||
a91ea69f | 514 | out: |
b3b94faa | 515 | kfree(bh); |
b3b94faa DT |
516 | return error; |
517 | } | |
518 | ||
519 | int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el, | |
40b78a32 | 520 | char *data, size_t size) |
b3b94faa | 521 | { |
40b78a32 SW |
522 | int ret; |
523 | size_t len = GFS2_EA_DATA_LEN(el->el_ea); | |
524 | if (len > size) | |
525 | return -ERANGE; | |
526 | ||
b3b94faa | 527 | if (GFS2_EA_IS_STUFFED(el->el_ea)) { |
40b78a32 SW |
528 | memcpy(data, GFS2_EA2DATA(el->el_ea), len); |
529 | return len; | |
530 | } | |
531 | ret = ea_get_unstuffed(ip, el->el_ea, data); | |
532 | if (ret < 0) | |
533 | return ret; | |
534 | return len; | |
b3b94faa DT |
535 | } |
536 | ||
537 | /** | |
40b78a32 SW |
538 | * gfs2_xattr_get - Get a GFS2 extended attribute |
539 | * @inode: The inode | |
540 | * @type: The type of extended attribute | |
541 | * @name: The name of the extended attribute | |
542 | * @buffer: The buffer to write the result into | |
543 | * @size: The size of the buffer | |
b3b94faa DT |
544 | * |
545 | * Returns: actual size of data on success, -errno on error | |
546 | */ | |
547 | ||
40b78a32 SW |
548 | int gfs2_xattr_get(struct inode *inode, int type, const char *name, |
549 | void *buffer, size_t size) | |
b3b94faa | 550 | { |
40b78a32 | 551 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
552 | struct gfs2_ea_location el; |
553 | int error; | |
554 | ||
3767ac21 | 555 | if (!ip->i_eattr) |
b3b94faa | 556 | return -ENODATA; |
40b78a32 SW |
557 | if (strlen(name) > GFS2_EA_MAX_NAME_LEN) |
558 | return -EINVAL; | |
b3b94faa | 559 | |
40b78a32 | 560 | error = gfs2_ea_find(ip, type, name, &el); |
b3b94faa DT |
561 | if (error) |
562 | return error; | |
563 | if (!el.el_ea) | |
564 | return -ENODATA; | |
40b78a32 SW |
565 | if (size) |
566 | error = gfs2_ea_get_copy(ip, &el, buffer, size); | |
567 | else | |
b3b94faa | 568 | error = GFS2_EA_DATA_LEN(el.el_ea); |
b3b94faa DT |
569 | brelse(el.el_bh); |
570 | ||
571 | return error; | |
572 | } | |
573 | ||
b3b94faa DT |
574 | /** |
575 | * ea_alloc_blk - allocates a new block for extended attributes. | |
576 | * @ip: A pointer to the inode that's getting extended attributes | |
cca195c5 | 577 | * @bhp: Pointer to pointer to a struct buffer_head |
b3b94faa DT |
578 | * |
579 | * Returns: errno | |
580 | */ | |
581 | ||
582 | static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp) | |
583 | { | |
feaa7bba | 584 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa | 585 | struct gfs2_ea_header *ea; |
b45e41d7 | 586 | unsigned int n = 1; |
cd915493 | 587 | u64 block; |
09010978 | 588 | int error; |
b3b94faa | 589 | |
09010978 SW |
590 | error = gfs2_alloc_block(ip, &block, &n); |
591 | if (error) | |
592 | return error; | |
5731be53 | 593 | gfs2_trans_add_unrevoke(sdp, block, 1); |
b3b94faa | 594 | *bhp = gfs2_meta_new(ip->i_gl, block); |
d4e9c4c3 | 595 | gfs2_trans_add_bh(ip->i_gl, *bhp, 1); |
b3b94faa DT |
596 | gfs2_metatype_set(*bhp, GFS2_METATYPE_EA, GFS2_FORMAT_EA); |
597 | gfs2_buffer_clear_tail(*bhp, sizeof(struct gfs2_meta_header)); | |
598 | ||
599 | ea = GFS2_EA_BH2FIRST(*bhp); | |
600 | ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); | |
601 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
602 | ea->ea_flags = GFS2_EAFLAG_LAST; | |
603 | ea->ea_num_ptrs = 0; | |
604 | ||
77658aad | 605 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa DT |
606 | |
607 | return 0; | |
608 | } | |
609 | ||
610 | /** | |
611 | * ea_write - writes the request info to an ea, creating new blocks if | |
612 | * necessary | |
cca195c5 SW |
613 | * @ip: inode that is being modified |
614 | * @ea: the location of the new ea in a block | |
b3b94faa DT |
615 | * @er: the write request |
616 | * | |
617 | * Note: does not update ea_rec_len or the GFS2_EAFLAG_LAST bin of ea_flags | |
618 | * | |
619 | * returns : errno | |
620 | */ | |
621 | ||
622 | static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea, | |
623 | struct gfs2_ea_request *er) | |
624 | { | |
feaa7bba | 625 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
09010978 | 626 | int error; |
b3b94faa DT |
627 | |
628 | ea->ea_data_len = cpu_to_be32(er->er_data_len); | |
629 | ea->ea_name_len = er->er_name_len; | |
630 | ea->ea_type = er->er_type; | |
631 | ea->__pad = 0; | |
632 | ||
633 | memcpy(GFS2_EA2NAME(ea), er->er_name, er->er_name_len); | |
634 | ||
635 | if (GFS2_EAREQ_SIZE_STUFFED(er) <= sdp->sd_jbsize) { | |
636 | ea->ea_num_ptrs = 0; | |
637 | memcpy(GFS2_EA2DATA(ea), er->er_data, er->er_data_len); | |
638 | } else { | |
b44b84d7 | 639 | __be64 *dataptr = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
640 | const char *data = er->er_data; |
641 | unsigned int data_len = er->er_data_len; | |
642 | unsigned int copy; | |
643 | unsigned int x; | |
644 | ||
5c676f6d | 645 | ea->ea_num_ptrs = DIV_ROUND_UP(er->er_data_len, sdp->sd_jbsize); |
b3b94faa DT |
646 | for (x = 0; x < ea->ea_num_ptrs; x++) { |
647 | struct buffer_head *bh; | |
cd915493 | 648 | u64 block; |
b3b94faa | 649 | int mh_size = sizeof(struct gfs2_meta_header); |
b45e41d7 | 650 | unsigned int n = 1; |
b3b94faa | 651 | |
09010978 SW |
652 | error = gfs2_alloc_block(ip, &block, &n); |
653 | if (error) | |
654 | return error; | |
5731be53 | 655 | gfs2_trans_add_unrevoke(sdp, block, 1); |
b3b94faa | 656 | bh = gfs2_meta_new(ip->i_gl, block); |
d4e9c4c3 | 657 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
b3b94faa DT |
658 | gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED); |
659 | ||
77658aad | 660 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa | 661 | |
cca195c5 SW |
662 | copy = data_len > sdp->sd_jbsize ? sdp->sd_jbsize : |
663 | data_len; | |
b3b94faa DT |
664 | memcpy(bh->b_data + mh_size, data, copy); |
665 | if (copy < sdp->sd_jbsize) | |
666 | memset(bh->b_data + mh_size + copy, 0, | |
667 | sdp->sd_jbsize - copy); | |
668 | ||
cca195c5 | 669 | *dataptr++ = cpu_to_be64(bh->b_blocknr); |
b3b94faa DT |
670 | data += copy; |
671 | data_len -= copy; | |
672 | ||
673 | brelse(bh); | |
674 | } | |
675 | ||
676 | gfs2_assert_withdraw(sdp, !data_len); | |
677 | } | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
682 | typedef int (*ea_skeleton_call_t) (struct gfs2_inode *ip, | |
cca195c5 | 683 | struct gfs2_ea_request *er, void *private); |
b3b94faa DT |
684 | |
685 | static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
686 | unsigned int blks, | |
cca195c5 | 687 | ea_skeleton_call_t skeleton_call, void *private) |
b3b94faa DT |
688 | { |
689 | struct gfs2_alloc *al; | |
690 | struct buffer_head *dibh; | |
691 | int error; | |
692 | ||
693 | al = gfs2_alloc_get(ip); | |
182fe5ab CG |
694 | if (!al) |
695 | return -ENOMEM; | |
b3b94faa | 696 | |
d82661d9 | 697 | error = gfs2_quota_lock_check(ip); |
b3b94faa DT |
698 | if (error) |
699 | goto out; | |
700 | ||
b3b94faa DT |
701 | al->al_requested = blks; |
702 | ||
703 | error = gfs2_inplace_reserve(ip); | |
704 | if (error) | |
705 | goto out_gunlock_q; | |
706 | ||
feaa7bba | 707 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), |
bb8d8a6f | 708 | blks + al->al_rgd->rd_length + |
b3b94faa DT |
709 | RES_DINODE + RES_STATFS + RES_QUOTA, 0); |
710 | if (error) | |
711 | goto out_ipres; | |
712 | ||
713 | error = skeleton_call(ip, er, private); | |
714 | if (error) | |
715 | goto out_end_trans; | |
716 | ||
717 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
718 | if (!error) { | |
4bd91ba1 | 719 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 720 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 721 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
722 | brelse(dibh); |
723 | } | |
724 | ||
a91ea69f | 725 | out_end_trans: |
feaa7bba | 726 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
a91ea69f | 727 | out_ipres: |
b3b94faa | 728 | gfs2_inplace_release(ip); |
a91ea69f | 729 | out_gunlock_q: |
b3b94faa | 730 | gfs2_quota_unlock(ip); |
a91ea69f | 731 | out: |
b3b94faa | 732 | gfs2_alloc_put(ip); |
b3b94faa DT |
733 | return error; |
734 | } | |
735 | ||
736 | static int ea_init_i(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
737 | void *private) | |
738 | { | |
739 | struct buffer_head *bh; | |
740 | int error; | |
741 | ||
742 | error = ea_alloc_blk(ip, &bh); | |
743 | if (error) | |
744 | return error; | |
745 | ||
3767ac21 | 746 | ip->i_eattr = bh->b_blocknr; |
b3b94faa DT |
747 | error = ea_write(ip, GFS2_EA_BH2FIRST(bh), er); |
748 | ||
749 | brelse(bh); | |
750 | ||
751 | return error; | |
752 | } | |
753 | ||
754 | /** | |
755 | * ea_init - initializes a new eattr block | |
756 | * @ip: | |
757 | * @er: | |
758 | * | |
759 | * Returns: errno | |
760 | */ | |
761 | ||
40b78a32 SW |
762 | static int ea_init(struct gfs2_inode *ip, int type, const char *name, |
763 | const void *data, size_t size) | |
b3b94faa | 764 | { |
40b78a32 | 765 | struct gfs2_ea_request er; |
feaa7bba | 766 | unsigned int jbsize = GFS2_SB(&ip->i_inode)->sd_jbsize; |
b3b94faa DT |
767 | unsigned int blks = 1; |
768 | ||
40b78a32 SW |
769 | er.er_type = type; |
770 | er.er_name = name; | |
771 | er.er_name_len = strlen(name); | |
772 | er.er_data = (void *)data; | |
773 | er.er_data_len = size; | |
774 | ||
775 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > jbsize) | |
776 | blks += DIV_ROUND_UP(er.er_data_len, jbsize); | |
b3b94faa | 777 | |
40b78a32 | 778 | return ea_alloc_skeleton(ip, &er, blks, ea_init_i, NULL); |
b3b94faa DT |
779 | } |
780 | ||
781 | static struct gfs2_ea_header *ea_split_ea(struct gfs2_ea_header *ea) | |
782 | { | |
cd915493 | 783 | u32 ea_size = GFS2_EA_SIZE(ea); |
568f4c96 SW |
784 | struct gfs2_ea_header *new = (struct gfs2_ea_header *)((char *)ea + |
785 | ea_size); | |
cd915493 | 786 | u32 new_size = GFS2_EA_REC_LEN(ea) - ea_size; |
b3b94faa DT |
787 | int last = ea->ea_flags & GFS2_EAFLAG_LAST; |
788 | ||
789 | ea->ea_rec_len = cpu_to_be32(ea_size); | |
790 | ea->ea_flags ^= last; | |
791 | ||
792 | new->ea_rec_len = cpu_to_be32(new_size); | |
793 | new->ea_flags = last; | |
794 | ||
795 | return new; | |
796 | } | |
797 | ||
798 | static void ea_set_remove_stuffed(struct gfs2_inode *ip, | |
799 | struct gfs2_ea_location *el) | |
800 | { | |
801 | struct gfs2_ea_header *ea = el->el_ea; | |
802 | struct gfs2_ea_header *prev = el->el_prev; | |
cd915493 | 803 | u32 len; |
b3b94faa | 804 | |
d4e9c4c3 | 805 | gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1); |
b3b94faa DT |
806 | |
807 | if (!prev || !GFS2_EA_IS_STUFFED(ea)) { | |
808 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
809 | return; | |
810 | } else if (GFS2_EA2NEXT(prev) != ea) { | |
811 | prev = GFS2_EA2NEXT(prev); | |
feaa7bba | 812 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), GFS2_EA2NEXT(prev) == ea); |
b3b94faa DT |
813 | } |
814 | ||
815 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
816 | prev->ea_rec_len = cpu_to_be32(len); | |
817 | ||
818 | if (GFS2_EA_IS_LAST(ea)) | |
819 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
820 | } | |
821 | ||
822 | struct ea_set { | |
823 | int ea_split; | |
824 | ||
825 | struct gfs2_ea_request *es_er; | |
826 | struct gfs2_ea_location *es_el; | |
827 | ||
828 | struct buffer_head *es_bh; | |
829 | struct gfs2_ea_header *es_ea; | |
830 | }; | |
831 | ||
832 | static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, | |
833 | struct gfs2_ea_header *ea, struct ea_set *es) | |
834 | { | |
835 | struct gfs2_ea_request *er = es->es_er; | |
836 | struct buffer_head *dibh; | |
837 | int error; | |
838 | ||
feaa7bba | 839 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + 2 * RES_EATTR, 0); |
b3b94faa DT |
840 | if (error) |
841 | return error; | |
842 | ||
d4e9c4c3 | 843 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
b3b94faa DT |
844 | |
845 | if (es->ea_split) | |
846 | ea = ea_split_ea(ea); | |
847 | ||
848 | ea_write(ip, ea, er); | |
849 | ||
850 | if (es->es_el) | |
851 | ea_set_remove_stuffed(ip, es->es_el); | |
852 | ||
853 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
854 | if (error) | |
855 | goto out; | |
4bd91ba1 | 856 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 857 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 858 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa | 859 | brelse(dibh); |
a91ea69f | 860 | out: |
feaa7bba | 861 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
862 | return error; |
863 | } | |
864 | ||
865 | static int ea_set_simple_alloc(struct gfs2_inode *ip, | |
866 | struct gfs2_ea_request *er, void *private) | |
867 | { | |
868 | struct ea_set *es = private; | |
869 | struct gfs2_ea_header *ea = es->es_ea; | |
870 | int error; | |
871 | ||
d4e9c4c3 | 872 | gfs2_trans_add_bh(ip->i_gl, es->es_bh, 1); |
b3b94faa DT |
873 | |
874 | if (es->ea_split) | |
875 | ea = ea_split_ea(ea); | |
876 | ||
877 | error = ea_write(ip, ea, er); | |
878 | if (error) | |
879 | return error; | |
880 | ||
881 | if (es->es_el) | |
882 | ea_set_remove_stuffed(ip, es->es_el); | |
883 | ||
884 | return 0; | |
885 | } | |
886 | ||
887 | static int ea_set_simple(struct gfs2_inode *ip, struct buffer_head *bh, | |
888 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
889 | void *private) | |
890 | { | |
891 | struct ea_set *es = private; | |
892 | unsigned int size; | |
893 | int stuffed; | |
894 | int error; | |
895 | ||
40b78a32 SW |
896 | stuffed = ea_calc_size(GFS2_SB(&ip->i_inode), es->es_er->er_name_len, |
897 | es->es_er->er_data_len, &size); | |
b3b94faa DT |
898 | |
899 | if (ea->ea_type == GFS2_EATYPE_UNUSED) { | |
900 | if (GFS2_EA_REC_LEN(ea) < size) | |
901 | return 0; | |
902 | if (!GFS2_EA_IS_STUFFED(ea)) { | |
903 | error = ea_remove_unstuffed(ip, bh, ea, prev, 1); | |
904 | if (error) | |
905 | return error; | |
906 | } | |
907 | es->ea_split = 0; | |
908 | } else if (GFS2_EA_REC_LEN(ea) - GFS2_EA_SIZE(ea) >= size) | |
909 | es->ea_split = 1; | |
910 | else | |
911 | return 0; | |
912 | ||
913 | if (stuffed) { | |
914 | error = ea_set_simple_noalloc(ip, bh, ea, es); | |
915 | if (error) | |
916 | return error; | |
917 | } else { | |
918 | unsigned int blks; | |
919 | ||
920 | es->es_bh = bh; | |
921 | es->es_ea = ea; | |
5c676f6d | 922 | blks = 2 + DIV_ROUND_UP(es->es_er->er_data_len, |
feaa7bba | 923 | GFS2_SB(&ip->i_inode)->sd_jbsize); |
b3b94faa DT |
924 | |
925 | error = ea_alloc_skeleton(ip, es->es_er, blks, | |
926 | ea_set_simple_alloc, es); | |
927 | if (error) | |
928 | return error; | |
929 | } | |
930 | ||
931 | return 1; | |
932 | } | |
933 | ||
934 | static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
935 | void *private) | |
936 | { | |
feaa7bba | 937 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa | 938 | struct buffer_head *indbh, *newbh; |
b44b84d7 | 939 | __be64 *eablk; |
b3b94faa DT |
940 | int error; |
941 | int mh_size = sizeof(struct gfs2_meta_header); | |
942 | ||
383f01fb | 943 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { |
b44b84d7 | 944 | __be64 *end; |
b3b94faa | 945 | |
3767ac21 | 946 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, |
7276b3b0 | 947 | &indbh); |
b3b94faa DT |
948 | if (error) |
949 | return error; | |
950 | ||
951 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { | |
952 | error = -EIO; | |
953 | goto out; | |
954 | } | |
955 | ||
b44b84d7 | 956 | eablk = (__be64 *)(indbh->b_data + mh_size); |
b3b94faa DT |
957 | end = eablk + sdp->sd_inptrs; |
958 | ||
959 | for (; eablk < end; eablk++) | |
960 | if (!*eablk) | |
961 | break; | |
962 | ||
963 | if (eablk == end) { | |
964 | error = -ENOSPC; | |
965 | goto out; | |
966 | } | |
967 | ||
d4e9c4c3 | 968 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
b3b94faa | 969 | } else { |
cd915493 | 970 | u64 blk; |
b45e41d7 | 971 | unsigned int n = 1; |
09010978 SW |
972 | error = gfs2_alloc_block(ip, &blk, &n); |
973 | if (error) | |
974 | return error; | |
5731be53 | 975 | gfs2_trans_add_unrevoke(sdp, blk, 1); |
b3b94faa | 976 | indbh = gfs2_meta_new(ip->i_gl, blk); |
d4e9c4c3 | 977 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
b3b94faa DT |
978 | gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN); |
979 | gfs2_buffer_clear_tail(indbh, mh_size); | |
980 | ||
b44b84d7 | 981 | eablk = (__be64 *)(indbh->b_data + mh_size); |
3767ac21 SW |
982 | *eablk = cpu_to_be64(ip->i_eattr); |
983 | ip->i_eattr = blk; | |
383f01fb | 984 | ip->i_diskflags |= GFS2_DIF_EA_INDIRECT; |
77658aad | 985 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa DT |
986 | |
987 | eablk++; | |
988 | } | |
989 | ||
990 | error = ea_alloc_blk(ip, &newbh); | |
991 | if (error) | |
992 | goto out; | |
993 | ||
cd915493 | 994 | *eablk = cpu_to_be64((u64)newbh->b_blocknr); |
b3b94faa DT |
995 | error = ea_write(ip, GFS2_EA_BH2FIRST(newbh), er); |
996 | brelse(newbh); | |
997 | if (error) | |
998 | goto out; | |
999 | ||
1000 | if (private) | |
cca195c5 | 1001 | ea_set_remove_stuffed(ip, private); |
b3b94faa | 1002 | |
a91ea69f | 1003 | out: |
b3b94faa | 1004 | brelse(indbh); |
b3b94faa DT |
1005 | return error; |
1006 | } | |
1007 | ||
40b78a32 SW |
1008 | static int ea_set_i(struct gfs2_inode *ip, int type, const char *name, |
1009 | const void *value, size_t size, struct gfs2_ea_location *el) | |
b3b94faa | 1010 | { |
40b78a32 | 1011 | struct gfs2_ea_request er; |
b3b94faa DT |
1012 | struct ea_set es; |
1013 | unsigned int blks = 2; | |
1014 | int error; | |
1015 | ||
40b78a32 SW |
1016 | er.er_type = type; |
1017 | er.er_name = name; | |
1018 | er.er_data = (void *)value; | |
1019 | er.er_name_len = strlen(name); | |
1020 | er.er_data_len = size; | |
1021 | ||
b3b94faa | 1022 | memset(&es, 0, sizeof(struct ea_set)); |
40b78a32 | 1023 | es.es_er = &er; |
b3b94faa DT |
1024 | es.es_el = el; |
1025 | ||
1026 | error = ea_foreach(ip, ea_set_simple, &es); | |
1027 | if (error > 0) | |
1028 | return 0; | |
1029 | if (error) | |
1030 | return error; | |
1031 | ||
383f01fb | 1032 | if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) |
b3b94faa | 1033 | blks++; |
40b78a32 SW |
1034 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > GFS2_SB(&ip->i_inode)->sd_jbsize) |
1035 | blks += DIV_ROUND_UP(er.er_data_len, GFS2_SB(&ip->i_inode)->sd_jbsize); | |
b3b94faa | 1036 | |
40b78a32 | 1037 | return ea_alloc_skeleton(ip, &er, blks, ea_set_block, el); |
b3b94faa DT |
1038 | } |
1039 | ||
1040 | static int ea_set_remove_unstuffed(struct gfs2_inode *ip, | |
1041 | struct gfs2_ea_location *el) | |
1042 | { | |
1043 | if (el->el_prev && GFS2_EA2NEXT(el->el_prev) != el->el_ea) { | |
1044 | el->el_prev = GFS2_EA2NEXT(el->el_prev); | |
feaa7bba | 1045 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), |
b3b94faa DT |
1046 | GFS2_EA2NEXT(el->el_prev) == el->el_ea); |
1047 | } | |
1048 | ||
1049 | return ea_remove_unstuffed(ip, el->el_bh, el->el_ea, el->el_prev,0); | |
1050 | } | |
1051 | ||
b3b94faa DT |
1052 | static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el) |
1053 | { | |
1054 | struct gfs2_ea_header *ea = el->el_ea; | |
1055 | struct gfs2_ea_header *prev = el->el_prev; | |
1056 | struct buffer_head *dibh; | |
1057 | int error; | |
1058 | ||
feaa7bba | 1059 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0); |
b3b94faa DT |
1060 | if (error) |
1061 | return error; | |
1062 | ||
d4e9c4c3 | 1063 | gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1); |
b3b94faa DT |
1064 | |
1065 | if (prev) { | |
cd915493 | 1066 | u32 len; |
b3b94faa DT |
1067 | |
1068 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
1069 | prev->ea_rec_len = cpu_to_be32(len); | |
1070 | ||
1071 | if (GFS2_EA_IS_LAST(ea)) | |
1072 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
40b78a32 | 1073 | } else { |
b3b94faa | 1074 | ea->ea_type = GFS2_EATYPE_UNUSED; |
40b78a32 | 1075 | } |
b3b94faa DT |
1076 | |
1077 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1078 | if (!error) { | |
4bd91ba1 | 1079 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 1080 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 1081 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa | 1082 | brelse(dibh); |
907b9bce | 1083 | } |
b3b94faa | 1084 | |
feaa7bba | 1085 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
1086 | |
1087 | return error; | |
1088 | } | |
1089 | ||
40b78a32 SW |
1090 | /** |
1091 | * gfs2_xattr_remove - Remove a GFS2 extended attribute | |
1092 | * @inode: The inode | |
1093 | * @type: The type of the extended attribute | |
1094 | * @name: The name of the extended attribute | |
1095 | * | |
1096 | * This is not called directly by the VFS since we use the (common) | |
1097 | * scheme of making a "set with NULL data" mean a remove request. Note | |
1098 | * that this is different from a set with zero length data. | |
1099 | * | |
1100 | * Returns: 0, or errno on failure | |
1101 | */ | |
1102 | ||
1103 | static int gfs2_xattr_remove(struct inode *inode, int type, const char *name) | |
b3b94faa | 1104 | { |
40b78a32 | 1105 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
1106 | struct gfs2_ea_location el; |
1107 | int error; | |
1108 | ||
3767ac21 | 1109 | if (!ip->i_eattr) |
b3b94faa DT |
1110 | return -ENODATA; |
1111 | ||
40b78a32 | 1112 | error = gfs2_ea_find(ip, type, name, &el); |
b3b94faa DT |
1113 | if (error) |
1114 | return error; | |
1115 | if (!el.el_ea) | |
1116 | return -ENODATA; | |
1117 | ||
1118 | if (GFS2_EA_IS_STUFFED(el.el_ea)) | |
1119 | error = ea_remove_stuffed(ip, &el); | |
1120 | else | |
40b78a32 | 1121 | error = ea_remove_unstuffed(ip, el.el_bh, el.el_ea, el.el_prev, 0); |
b3b94faa DT |
1122 | |
1123 | brelse(el.el_bh); | |
1124 | ||
1125 | return error; | |
1126 | } | |
1127 | ||
1128 | /** | |
40b78a32 SW |
1129 | * gfs2_xattr_set - Set (or remove) a GFS2 extended attribute |
1130 | * @inode: The inode | |
1131 | * @type: The type of the extended attribute | |
1132 | * @name: The name of the extended attribute | |
1133 | * @value: The value of the extended attribute (NULL for remove) | |
1134 | * @size: The size of the @value argument | |
1135 | * @flags: Create or Replace | |
b3b94faa | 1136 | * |
40b78a32 SW |
1137 | * See gfs2_xattr_remove() for details of the removal of xattrs. |
1138 | * | |
1139 | * Returns: 0 or errno on failure | |
b3b94faa DT |
1140 | */ |
1141 | ||
40b78a32 SW |
1142 | int gfs2_xattr_set(struct inode *inode, int type, const char *name, |
1143 | const void *value, size_t size, int flags) | |
b3b94faa | 1144 | { |
40b78a32 SW |
1145 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
1146 | struct gfs2_inode *ip = GFS2_I(inode); | |
1147 | struct gfs2_ea_location el; | |
1148 | unsigned int namel = strlen(name); | |
b3b94faa DT |
1149 | int error; |
1150 | ||
40b78a32 SW |
1151 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1152 | return -EPERM; | |
1153 | if (namel > GFS2_EA_MAX_NAME_LEN) | |
1154 | return -ERANGE; | |
b3b94faa | 1155 | |
40b78a32 SW |
1156 | if (value == NULL) |
1157 | return gfs2_xattr_remove(inode, type, name); | |
1158 | ||
1159 | if (ea_check_size(sdp, namel, size)) | |
1160 | return -ERANGE; | |
1161 | ||
1162 | if (!ip->i_eattr) { | |
1163 | if (flags & XATTR_REPLACE) | |
1164 | return -ENODATA; | |
1165 | return ea_init(ip, type, name, value, size); | |
1166 | } | |
1167 | ||
1168 | error = gfs2_ea_find(ip, type, name, &el); | |
b3b94faa DT |
1169 | if (error) |
1170 | return error; | |
1171 | ||
40b78a32 SW |
1172 | if (el.el_ea) { |
1173 | if (ip->i_diskflags & GFS2_DIF_APPENDONLY) { | |
1174 | brelse(el.el_bh); | |
1175 | return -EPERM; | |
1176 | } | |
b3b94faa | 1177 | |
40b78a32 SW |
1178 | error = -EEXIST; |
1179 | if (!(flags & XATTR_CREATE)) { | |
1180 | int unstuffed = !GFS2_EA_IS_STUFFED(el.el_ea); | |
1181 | error = ea_set_i(ip, type, name, value, size, &el); | |
1182 | if (!error && unstuffed) | |
1183 | ea_set_remove_unstuffed(ip, &el); | |
1184 | } | |
1185 | ||
1186 | brelse(el.el_bh); | |
1187 | return error; | |
1188 | } | |
1189 | ||
1190 | error = -ENODATA; | |
1191 | if (!(flags & XATTR_REPLACE)) | |
1192 | error = ea_set_i(ip, type, name, value, size, NULL); | |
b3b94faa DT |
1193 | |
1194 | return error; | |
1195 | } | |
1196 | ||
1197 | static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip, | |
1198 | struct gfs2_ea_header *ea, char *data) | |
1199 | { | |
feaa7bba | 1200 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
1201 | struct buffer_head **bh; |
1202 | unsigned int amount = GFS2_EA_DATA_LEN(ea); | |
5c676f6d | 1203 | unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); |
b44b84d7 | 1204 | __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
1205 | unsigned int x; |
1206 | int error; | |
1207 | ||
16c5f06f | 1208 | bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); |
b3b94faa DT |
1209 | if (!bh) |
1210 | return -ENOMEM; | |
1211 | ||
1212 | error = gfs2_trans_begin(sdp, nptrs + RES_DINODE, 0); | |
1213 | if (error) | |
1214 | goto out; | |
1215 | ||
1216 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 SW |
1217 | error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, |
1218 | bh + x); | |
b3b94faa DT |
1219 | if (error) { |
1220 | while (x--) | |
1221 | brelse(bh[x]); | |
1222 | goto fail; | |
1223 | } | |
1224 | dataptrs++; | |
1225 | } | |
1226 | ||
1227 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 | 1228 | error = gfs2_meta_wait(sdp, bh[x]); |
b3b94faa DT |
1229 | if (error) { |
1230 | for (; x < nptrs; x++) | |
1231 | brelse(bh[x]); | |
1232 | goto fail; | |
1233 | } | |
1234 | if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) { | |
1235 | for (; x < nptrs; x++) | |
1236 | brelse(bh[x]); | |
1237 | error = -EIO; | |
1238 | goto fail; | |
1239 | } | |
1240 | ||
d4e9c4c3 | 1241 | gfs2_trans_add_bh(ip->i_gl, bh[x], 1); |
b3b94faa | 1242 | |
cca195c5 | 1243 | memcpy(bh[x]->b_data + sizeof(struct gfs2_meta_header), data, |
b3b94faa DT |
1244 | (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize); |
1245 | ||
1246 | amount -= sdp->sd_jbsize; | |
1247 | data += sdp->sd_jbsize; | |
1248 | ||
1249 | brelse(bh[x]); | |
1250 | } | |
1251 | ||
a91ea69f | 1252 | out: |
b3b94faa | 1253 | kfree(bh); |
b3b94faa DT |
1254 | return error; |
1255 | ||
a91ea69f | 1256 | fail: |
b3b94faa DT |
1257 | gfs2_trans_end(sdp); |
1258 | kfree(bh); | |
b3b94faa DT |
1259 | return error; |
1260 | } | |
1261 | ||
1262 | int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el, | |
1263 | struct iattr *attr, char *data) | |
1264 | { | |
1265 | struct buffer_head *dibh; | |
1266 | int error; | |
1267 | ||
1268 | if (GFS2_EA_IS_STUFFED(el->el_ea)) { | |
feaa7bba | 1269 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0); |
b3b94faa DT |
1270 | if (error) |
1271 | return error; | |
1272 | ||
d4e9c4c3 | 1273 | gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1); |
cca195c5 | 1274 | memcpy(GFS2_EA2DATA(el->el_ea), data, |
b3b94faa DT |
1275 | GFS2_EA_DATA_LEN(el->el_ea)); |
1276 | } else | |
1277 | error = ea_acl_chmod_unstuffed(ip, el->el_ea, data); | |
1278 | ||
1279 | if (error) | |
1280 | return error; | |
1281 | ||
1282 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1283 | if (!error) { | |
feaa7bba SW |
1284 | error = inode_setattr(&ip->i_inode, attr); |
1285 | gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error); | |
d4e9c4c3 | 1286 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 1287 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
1288 | brelse(dibh); |
1289 | } | |
1290 | ||
feaa7bba | 1291 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
1292 | |
1293 | return error; | |
1294 | } | |
1295 | ||
1296 | static int ea_dealloc_indirect(struct gfs2_inode *ip) | |
1297 | { | |
feaa7bba | 1298 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
1299 | struct gfs2_rgrp_list rlist; |
1300 | struct buffer_head *indbh, *dibh; | |
b44b84d7 | 1301 | __be64 *eablk, *end; |
b3b94faa | 1302 | unsigned int rg_blocks = 0; |
cd915493 | 1303 | u64 bstart = 0; |
b3b94faa DT |
1304 | unsigned int blen = 0; |
1305 | unsigned int blks = 0; | |
1306 | unsigned int x; | |
1307 | int error; | |
1308 | ||
1309 | memset(&rlist, 0, sizeof(struct gfs2_rgrp_list)); | |
1310 | ||
3767ac21 | 1311 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &indbh); |
b3b94faa DT |
1312 | if (error) |
1313 | return error; | |
1314 | ||
1315 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { | |
1316 | error = -EIO; | |
1317 | goto out; | |
1318 | } | |
1319 | ||
b44b84d7 | 1320 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
b3b94faa DT |
1321 | end = eablk + sdp->sd_inptrs; |
1322 | ||
1323 | for (; eablk < end; eablk++) { | |
cd915493 | 1324 | u64 bn; |
b3b94faa DT |
1325 | |
1326 | if (!*eablk) | |
1327 | break; | |
1328 | bn = be64_to_cpu(*eablk); | |
1329 | ||
1330 | if (bstart + blen == bn) | |
1331 | blen++; | |
1332 | else { | |
1333 | if (bstart) | |
1334 | gfs2_rlist_add(sdp, &rlist, bstart); | |
1335 | bstart = bn; | |
1336 | blen = 1; | |
1337 | } | |
1338 | blks++; | |
1339 | } | |
1340 | if (bstart) | |
1341 | gfs2_rlist_add(sdp, &rlist, bstart); | |
1342 | else | |
1343 | goto out; | |
1344 | ||
fe6c991c | 1345 | gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE); |
b3b94faa DT |
1346 | |
1347 | for (x = 0; x < rlist.rl_rgrps; x++) { | |
1348 | struct gfs2_rgrpd *rgd; | |
5c676f6d | 1349 | rgd = rlist.rl_ghs[x].gh_gl->gl_object; |
bb8d8a6f | 1350 | rg_blocks += rgd->rd_length; |
b3b94faa DT |
1351 | } |
1352 | ||
1353 | error = gfs2_glock_nq_m(rlist.rl_rgrps, rlist.rl_ghs); | |
1354 | if (error) | |
1355 | goto out_rlist_free; | |
1356 | ||
cca195c5 SW |
1357 | error = gfs2_trans_begin(sdp, rg_blocks + RES_DINODE + RES_INDIRECT + |
1358 | RES_STATFS + RES_QUOTA, blks); | |
b3b94faa DT |
1359 | if (error) |
1360 | goto out_gunlock; | |
1361 | ||
d4e9c4c3 | 1362 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
b3b94faa | 1363 | |
b44b84d7 | 1364 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
b3b94faa DT |
1365 | bstart = 0; |
1366 | blen = 0; | |
1367 | ||
1368 | for (; eablk < end; eablk++) { | |
cd915493 | 1369 | u64 bn; |
b3b94faa DT |
1370 | |
1371 | if (!*eablk) | |
1372 | break; | |
1373 | bn = be64_to_cpu(*eablk); | |
1374 | ||
1375 | if (bstart + blen == bn) | |
1376 | blen++; | |
1377 | else { | |
1378 | if (bstart) | |
1379 | gfs2_free_meta(ip, bstart, blen); | |
1380 | bstart = bn; | |
1381 | blen = 1; | |
1382 | } | |
1383 | ||
1384 | *eablk = 0; | |
77658aad | 1385 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
1386 | } |
1387 | if (bstart) | |
1388 | gfs2_free_meta(ip, bstart, blen); | |
1389 | ||
383f01fb | 1390 | ip->i_diskflags &= ~GFS2_DIF_EA_INDIRECT; |
b3b94faa DT |
1391 | |
1392 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1393 | if (!error) { | |
d4e9c4c3 | 1394 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 1395 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
1396 | brelse(dibh); |
1397 | } | |
1398 | ||
1399 | gfs2_trans_end(sdp); | |
1400 | ||
a91ea69f | 1401 | out_gunlock: |
b3b94faa | 1402 | gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs); |
a91ea69f | 1403 | out_rlist_free: |
b3b94faa | 1404 | gfs2_rlist_free(&rlist); |
a91ea69f | 1405 | out: |
b3b94faa | 1406 | brelse(indbh); |
b3b94faa DT |
1407 | return error; |
1408 | } | |
1409 | ||
1410 | static int ea_dealloc_block(struct gfs2_inode *ip) | |
1411 | { | |
feaa7bba | 1412 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
6dbd8224 | 1413 | struct gfs2_alloc *al = ip->i_alloc; |
b3b94faa DT |
1414 | struct gfs2_rgrpd *rgd; |
1415 | struct buffer_head *dibh; | |
1416 | int error; | |
1417 | ||
3767ac21 | 1418 | rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr); |
b3b94faa DT |
1419 | if (!rgd) { |
1420 | gfs2_consist_inode(ip); | |
1421 | return -EIO; | |
1422 | } | |
1423 | ||
1424 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, | |
1425 | &al->al_rgd_gh); | |
1426 | if (error) | |
1427 | return error; | |
1428 | ||
cca195c5 SW |
1429 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_DINODE + RES_STATFS + |
1430 | RES_QUOTA, 1); | |
b3b94faa DT |
1431 | if (error) |
1432 | goto out_gunlock; | |
1433 | ||
3767ac21 | 1434 | gfs2_free_meta(ip, ip->i_eattr, 1); |
b3b94faa | 1435 | |
3767ac21 | 1436 | ip->i_eattr = 0; |
77658aad | 1437 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
1438 | |
1439 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1440 | if (!error) { | |
d4e9c4c3 | 1441 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 1442 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
1443 | brelse(dibh); |
1444 | } | |
1445 | ||
1446 | gfs2_trans_end(sdp); | |
1447 | ||
a91ea69f | 1448 | out_gunlock: |
b3b94faa | 1449 | gfs2_glock_dq_uninit(&al->al_rgd_gh); |
b3b94faa DT |
1450 | return error; |
1451 | } | |
1452 | ||
1453 | /** | |
1454 | * gfs2_ea_dealloc - deallocate the extended attribute fork | |
1455 | * @ip: the inode | |
1456 | * | |
1457 | * Returns: errno | |
1458 | */ | |
1459 | ||
1460 | int gfs2_ea_dealloc(struct gfs2_inode *ip) | |
1461 | { | |
1462 | struct gfs2_alloc *al; | |
1463 | int error; | |
1464 | ||
1465 | al = gfs2_alloc_get(ip); | |
182fe5ab CG |
1466 | if (!al) |
1467 | return -ENOMEM; | |
b3b94faa DT |
1468 | |
1469 | error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
1470 | if (error) | |
1471 | goto out_alloc; | |
1472 | ||
feaa7bba | 1473 | error = gfs2_rindex_hold(GFS2_SB(&ip->i_inode), &al->al_ri_gh); |
b3b94faa DT |
1474 | if (error) |
1475 | goto out_quota; | |
1476 | ||
1477 | error = ea_foreach(ip, ea_dealloc_unstuffed, NULL); | |
1478 | if (error) | |
1479 | goto out_rindex; | |
1480 | ||
383f01fb | 1481 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { |
b3b94faa DT |
1482 | error = ea_dealloc_indirect(ip); |
1483 | if (error) | |
1484 | goto out_rindex; | |
1485 | } | |
1486 | ||
1487 | error = ea_dealloc_block(ip); | |
1488 | ||
a91ea69f | 1489 | out_rindex: |
b3b94faa | 1490 | gfs2_glock_dq_uninit(&al->al_ri_gh); |
a91ea69f | 1491 | out_quota: |
b3b94faa | 1492 | gfs2_quota_unhold(ip); |
a91ea69f | 1493 | out_alloc: |
b3b94faa | 1494 | gfs2_alloc_put(ip); |
b3b94faa DT |
1495 | return error; |
1496 | } | |
1497 | ||
40b78a32 SW |
1498 | static int gfs2_xattr_user_get(struct inode *inode, const char *name, |
1499 | void *buffer, size_t size) | |
1500 | { | |
1501 | return gfs2_xattr_get(inode, GFS2_EATYPE_USR, name, buffer, size); | |
1502 | } | |
1503 | ||
1504 | static int gfs2_xattr_user_set(struct inode *inode, const char *name, | |
1505 | const void *value, size_t size, int flags) | |
1506 | { | |
1507 | return gfs2_xattr_set(inode, GFS2_EATYPE_USR, name, value, size, flags); | |
1508 | } | |
1509 | ||
1510 | static int gfs2_xattr_system_get(struct inode *inode, const char *name, | |
1511 | void *buffer, size_t size) | |
1512 | { | |
1513 | return gfs2_xattr_get(inode, GFS2_EATYPE_SYS, name, buffer, size); | |
1514 | } | |
1515 | ||
1516 | static int gfs2_xattr_system_set(struct inode *inode, const char *name, | |
1517 | const void *value, size_t size, int flags) | |
1518 | { | |
1519 | return gfs2_xattr_set(inode, GFS2_EATYPE_SYS, name, value, size, flags); | |
1520 | } | |
1521 | ||
1522 | static int gfs2_xattr_security_get(struct inode *inode, const char *name, | |
1523 | void *buffer, size_t size) | |
1524 | { | |
1525 | return gfs2_xattr_get(inode, GFS2_EATYPE_SECURITY, name, buffer, size); | |
1526 | } | |
1527 | ||
1528 | static int gfs2_xattr_security_set(struct inode *inode, const char *name, | |
1529 | const void *value, size_t size, int flags) | |
1530 | { | |
1531 | return gfs2_xattr_set(inode, GFS2_EATYPE_SECURITY, name, value, size, flags); | |
1532 | } | |
1533 | ||
1534 | static struct xattr_handler gfs2_xattr_user_handler = { | |
1535 | .prefix = XATTR_USER_PREFIX, | |
1536 | .get = gfs2_xattr_user_get, | |
1537 | .set = gfs2_xattr_user_set, | |
1538 | }; | |
1539 | ||
1540 | static struct xattr_handler gfs2_xattr_security_handler = { | |
1541 | .prefix = XATTR_SECURITY_PREFIX, | |
1542 | .get = gfs2_xattr_security_get, | |
1543 | .set = gfs2_xattr_security_set, | |
1544 | }; | |
1545 | ||
1546 | static struct xattr_handler gfs2_xattr_system_handler = { | |
1547 | .prefix = XATTR_SYSTEM_PREFIX, | |
1548 | .get = gfs2_xattr_system_get, | |
1549 | .set = gfs2_xattr_system_set, | |
1550 | }; | |
1551 | ||
1552 | struct xattr_handler *gfs2_xattr_handlers[] = { | |
1553 | &gfs2_xattr_user_handler, | |
1554 | &gfs2_xattr_security_handler, | |
1555 | &gfs2_xattr_system_handler, | |
1556 | NULL, | |
1557 | }; | |
1558 |