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" |
307cf6e6 | 21 | #include "xattr.h" |
b3b94faa DT |
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 | ||
479c427d SW |
189 | static int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name, |
190 | struct gfs2_ea_location *el) | |
b3b94faa DT |
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 | ||
5e2f7d61 BP |
241 | error = gfs2_rindex_update(sdp); |
242 | if (error) | |
243 | return error; | |
244 | ||
b3b94faa DT |
245 | if (GFS2_EA_IS_STUFFED(ea)) |
246 | return 0; | |
247 | ||
248 | dataptrs = GFS2_EA2DATAPTRS(ea); | |
cca195c5 | 249 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { |
b3b94faa DT |
250 | if (*dataptrs) { |
251 | blks++; | |
252 | bn = be64_to_cpu(*dataptrs); | |
253 | } | |
cca195c5 | 254 | } |
b3b94faa DT |
255 | if (!blks) |
256 | return 0; | |
257 | ||
66fc061b | 258 | rgd = gfs2_blk2rgrpd(sdp, bn, 1); |
b3b94faa DT |
259 | if (!rgd) { |
260 | gfs2_consist_inode(ip); | |
261 | return -EIO; | |
262 | } | |
263 | ||
264 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &rg_gh); | |
265 | if (error) | |
266 | return error; | |
267 | ||
bb8d8a6f | 268 | error = gfs2_trans_begin(sdp, rgd->rd_length + RES_DINODE + |
cca195c5 | 269 | RES_EATTR + RES_STATFS + RES_QUOTA, blks); |
b3b94faa DT |
270 | if (error) |
271 | goto out_gunlock; | |
272 | ||
d4e9c4c3 | 273 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
b3b94faa DT |
274 | |
275 | dataptrs = GFS2_EA2DATAPTRS(ea); | |
276 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { | |
277 | if (!*dataptrs) | |
278 | break; | |
279 | bn = be64_to_cpu(*dataptrs); | |
280 | ||
281 | if (bstart + blen == bn) | |
282 | blen++; | |
283 | else { | |
284 | if (bstart) | |
285 | gfs2_free_meta(ip, bstart, blen); | |
286 | bstart = bn; | |
287 | blen = 1; | |
288 | } | |
289 | ||
290 | *dataptrs = 0; | |
77658aad | 291 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
292 | } |
293 | if (bstart) | |
294 | gfs2_free_meta(ip, bstart, blen); | |
295 | ||
296 | if (prev && !leave) { | |
cd915493 | 297 | u32 len; |
b3b94faa DT |
298 | |
299 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
300 | prev->ea_rec_len = cpu_to_be32(len); | |
301 | ||
302 | if (GFS2_EA_IS_LAST(ea)) | |
303 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
304 | } else { | |
305 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
306 | ea->ea_num_ptrs = 0; | |
307 | } | |
308 | ||
309 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
310 | if (!error) { | |
4bd91ba1 | 311 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 312 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 313 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
314 | brelse(dibh); |
315 | } | |
316 | ||
317 | gfs2_trans_end(sdp); | |
318 | ||
a91ea69f | 319 | out_gunlock: |
b3b94faa | 320 | gfs2_glock_dq_uninit(&rg_gh); |
b3b94faa DT |
321 | return error; |
322 | } | |
323 | ||
324 | static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, | |
325 | struct gfs2_ea_header *ea, | |
326 | struct gfs2_ea_header *prev, int leave) | |
327 | { | |
564e12b1 | 328 | struct gfs2_qadata *qa; |
b3b94faa DT |
329 | int error; |
330 | ||
564e12b1 BP |
331 | qa = gfs2_qadata_get(ip); |
332 | if (!qa) | |
182fe5ab | 333 | return -ENOMEM; |
b3b94faa DT |
334 | |
335 | error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
336 | if (error) | |
337 | goto out_alloc; | |
338 | ||
cca195c5 | 339 | error = ea_dealloc_unstuffed(ip, bh, ea, prev, (leave) ? &error : NULL); |
b3b94faa | 340 | |
b3b94faa | 341 | gfs2_quota_unhold(ip); |
a91ea69f | 342 | out_alloc: |
564e12b1 | 343 | gfs2_qadata_put(ip); |
b3b94faa DT |
344 | return error; |
345 | } | |
346 | ||
b3b94faa DT |
347 | struct ea_list { |
348 | struct gfs2_ea_request *ei_er; | |
349 | unsigned int ei_size; | |
350 | }; | |
351 | ||
40b78a32 SW |
352 | static inline unsigned int gfs2_ea_strlen(struct gfs2_ea_header *ea) |
353 | { | |
354 | switch (ea->ea_type) { | |
355 | case GFS2_EATYPE_USR: | |
356 | return 5 + ea->ea_name_len + 1; | |
357 | case GFS2_EATYPE_SYS: | |
358 | return 7 + ea->ea_name_len + 1; | |
359 | case GFS2_EATYPE_SECURITY: | |
360 | return 9 + ea->ea_name_len + 1; | |
361 | default: | |
362 | return 0; | |
363 | } | |
364 | } | |
365 | ||
b3b94faa DT |
366 | static int ea_list_i(struct gfs2_inode *ip, struct buffer_head *bh, |
367 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
368 | void *private) | |
369 | { | |
370 | struct ea_list *ei = private; | |
371 | struct gfs2_ea_request *er = ei->ei_er; | |
639b6d79 | 372 | unsigned int ea_size = gfs2_ea_strlen(ea); |
b3b94faa DT |
373 | |
374 | if (ea->ea_type == GFS2_EATYPE_UNUSED) | |
375 | return 0; | |
376 | ||
377 | if (er->er_data_len) { | |
01eb7c07 SW |
378 | char *prefix = NULL; |
379 | unsigned int l = 0; | |
b3b94faa DT |
380 | char c = 0; |
381 | ||
382 | if (ei->ei_size + ea_size > er->er_data_len) | |
383 | return -ERANGE; | |
384 | ||
639b6d79 RH |
385 | switch (ea->ea_type) { |
386 | case GFS2_EATYPE_USR: | |
b3b94faa DT |
387 | prefix = "user."; |
388 | l = 5; | |
639b6d79 RH |
389 | break; |
390 | case GFS2_EATYPE_SYS: | |
b3b94faa DT |
391 | prefix = "system."; |
392 | l = 7; | |
639b6d79 RH |
393 | break; |
394 | case GFS2_EATYPE_SECURITY: | |
395 | prefix = "security."; | |
396 | l = 9; | |
397 | break; | |
b3b94faa DT |
398 | } |
399 | ||
01eb7c07 SW |
400 | BUG_ON(l == 0); |
401 | ||
90cdd208 SW |
402 | memcpy(er->er_data + ei->ei_size, prefix, l); |
403 | memcpy(er->er_data + ei->ei_size + l, GFS2_EA2NAME(ea), | |
b3b94faa | 404 | ea->ea_name_len); |
90cdd208 | 405 | memcpy(er->er_data + ei->ei_size + ea_size - 1, &c, 1); |
b3b94faa DT |
406 | } |
407 | ||
408 | ei->ei_size += ea_size; | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
413 | /** | |
40b78a32 SW |
414 | * gfs2_listxattr - List gfs2 extended attributes |
415 | * @dentry: The dentry whose inode we are interested in | |
416 | * @buffer: The buffer to write the results | |
417 | * @size: The size of the buffer | |
b3b94faa DT |
418 | * |
419 | * Returns: actual size of data on success, -errno on error | |
420 | */ | |
421 | ||
40b78a32 | 422 | ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) |
b3b94faa | 423 | { |
40b78a32 SW |
424 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
425 | struct gfs2_ea_request er; | |
b3b94faa DT |
426 | struct gfs2_holder i_gh; |
427 | int error; | |
428 | ||
40b78a32 SW |
429 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
430 | if (size) { | |
431 | er.er_data = buffer; | |
432 | er.er_data_len = size; | |
b3b94faa DT |
433 | } |
434 | ||
cca195c5 | 435 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); |
b3b94faa DT |
436 | if (error) |
437 | return error; | |
438 | ||
3767ac21 | 439 | if (ip->i_eattr) { |
40b78a32 | 440 | struct ea_list ei = { .ei_er = &er, .ei_size = 0 }; |
b3b94faa DT |
441 | |
442 | error = ea_foreach(ip, ea_list_i, &ei); | |
443 | if (!error) | |
444 | error = ei.ei_size; | |
445 | } | |
446 | ||
447 | gfs2_glock_dq_uninit(&i_gh); | |
448 | ||
449 | return error; | |
450 | } | |
451 | ||
452 | /** | |
453 | * ea_get_unstuffed - actually copies the unstuffed data into the | |
454 | * request buffer | |
cca195c5 SW |
455 | * @ip: The GFS2 inode |
456 | * @ea: The extended attribute header structure | |
457 | * @data: The data to be copied | |
b3b94faa DT |
458 | * |
459 | * Returns: errno | |
460 | */ | |
461 | ||
462 | static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea, | |
463 | char *data) | |
464 | { | |
feaa7bba | 465 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
466 | struct buffer_head **bh; |
467 | unsigned int amount = GFS2_EA_DATA_LEN(ea); | |
5c676f6d | 468 | unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); |
b44b84d7 | 469 | __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
470 | unsigned int x; |
471 | int error = 0; | |
472 | ||
16c5f06f | 473 | bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); |
b3b94faa DT |
474 | if (!bh) |
475 | return -ENOMEM; | |
476 | ||
477 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 SW |
478 | error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, |
479 | bh + x); | |
b3b94faa DT |
480 | if (error) { |
481 | while (x--) | |
482 | brelse(bh[x]); | |
483 | goto out; | |
484 | } | |
485 | dataptrs++; | |
486 | } | |
487 | ||
488 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 | 489 | error = gfs2_meta_wait(sdp, bh[x]); |
b3b94faa DT |
490 | if (error) { |
491 | for (; x < nptrs; x++) | |
492 | brelse(bh[x]); | |
493 | goto out; | |
494 | } | |
495 | if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) { | |
496 | for (; x < nptrs; x++) | |
497 | brelse(bh[x]); | |
498 | error = -EIO; | |
499 | goto out; | |
500 | } | |
501 | ||
cca195c5 | 502 | memcpy(data, bh[x]->b_data + sizeof(struct gfs2_meta_header), |
b3b94faa DT |
503 | (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize); |
504 | ||
505 | amount -= sdp->sd_jbsize; | |
506 | data += sdp->sd_jbsize; | |
507 | ||
508 | brelse(bh[x]); | |
509 | } | |
510 | ||
a91ea69f | 511 | out: |
b3b94faa | 512 | kfree(bh); |
b3b94faa DT |
513 | return error; |
514 | } | |
515 | ||
479c427d SW |
516 | static int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el, |
517 | char *data, size_t size) | |
b3b94faa | 518 | { |
40b78a32 SW |
519 | int ret; |
520 | size_t len = GFS2_EA_DATA_LEN(el->el_ea); | |
521 | if (len > size) | |
522 | return -ERANGE; | |
523 | ||
b3b94faa | 524 | if (GFS2_EA_IS_STUFFED(el->el_ea)) { |
40b78a32 SW |
525 | memcpy(data, GFS2_EA2DATA(el->el_ea), len); |
526 | return len; | |
527 | } | |
528 | ret = ea_get_unstuffed(ip, el->el_ea, data); | |
529 | if (ret < 0) | |
530 | return ret; | |
531 | return len; | |
b3b94faa DT |
532 | } |
533 | ||
479c427d SW |
534 | int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **ppdata) |
535 | { | |
536 | struct gfs2_ea_location el; | |
537 | int error; | |
538 | int len; | |
539 | char *data; | |
540 | ||
541 | error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, name, &el); | |
542 | if (error) | |
543 | return error; | |
544 | if (!el.el_ea) | |
545 | goto out; | |
546 | if (!GFS2_EA_DATA_LEN(el.el_ea)) | |
547 | goto out; | |
548 | ||
549 | len = GFS2_EA_DATA_LEN(el.el_ea); | |
550 | data = kmalloc(len, GFP_NOFS); | |
551 | error = -ENOMEM; | |
552 | if (data == NULL) | |
553 | goto out; | |
554 | ||
555 | error = gfs2_ea_get_copy(ip, &el, data, len); | |
114b80ce SW |
556 | if (error < 0) |
557 | kfree(data); | |
558 | else | |
559 | *ppdata = data; | |
479c427d SW |
560 | out: |
561 | brelse(el.el_bh); | |
562 | return error; | |
563 | } | |
564 | ||
b3b94faa | 565 | /** |
40b78a32 SW |
566 | * gfs2_xattr_get - Get a GFS2 extended attribute |
567 | * @inode: The inode | |
40b78a32 SW |
568 | * @name: The name of the extended attribute |
569 | * @buffer: The buffer to write the result into | |
570 | * @size: The size of the buffer | |
431547b3 | 571 | * @type: The type of extended attribute |
b3b94faa DT |
572 | * |
573 | * Returns: actual size of data on success, -errno on error | |
574 | */ | |
431547b3 CH |
575 | static int gfs2_xattr_get(struct dentry *dentry, const char *name, |
576 | void *buffer, size_t size, int type) | |
b3b94faa | 577 | { |
431547b3 | 578 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
b3b94faa DT |
579 | struct gfs2_ea_location el; |
580 | int error; | |
581 | ||
3767ac21 | 582 | if (!ip->i_eattr) |
b3b94faa | 583 | return -ENODATA; |
40b78a32 SW |
584 | if (strlen(name) > GFS2_EA_MAX_NAME_LEN) |
585 | return -EINVAL; | |
b3b94faa | 586 | |
40b78a32 | 587 | error = gfs2_ea_find(ip, type, name, &el); |
b3b94faa DT |
588 | if (error) |
589 | return error; | |
590 | if (!el.el_ea) | |
591 | return -ENODATA; | |
86d00636 | 592 | if (size) |
40b78a32 SW |
593 | error = gfs2_ea_get_copy(ip, &el, buffer, size); |
594 | else | |
b3b94faa | 595 | error = GFS2_EA_DATA_LEN(el.el_ea); |
b3b94faa DT |
596 | brelse(el.el_bh); |
597 | ||
598 | return error; | |
599 | } | |
600 | ||
b3b94faa DT |
601 | /** |
602 | * ea_alloc_blk - allocates a new block for extended attributes. | |
603 | * @ip: A pointer to the inode that's getting extended attributes | |
cca195c5 | 604 | * @bhp: Pointer to pointer to a struct buffer_head |
b3b94faa DT |
605 | * |
606 | * Returns: errno | |
607 | */ | |
608 | ||
609 | static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp) | |
610 | { | |
feaa7bba | 611 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa | 612 | struct gfs2_ea_header *ea; |
b45e41d7 | 613 | unsigned int n = 1; |
cd915493 | 614 | u64 block; |
09010978 | 615 | int error; |
b3b94faa | 616 | |
6e87ed0f | 617 | error = gfs2_alloc_blocks(ip, &block, &n, 0, NULL); |
09010978 SW |
618 | if (error) |
619 | return error; | |
5731be53 | 620 | gfs2_trans_add_unrevoke(sdp, block, 1); |
b3b94faa | 621 | *bhp = gfs2_meta_new(ip->i_gl, block); |
d4e9c4c3 | 622 | gfs2_trans_add_bh(ip->i_gl, *bhp, 1); |
b3b94faa DT |
623 | gfs2_metatype_set(*bhp, GFS2_METATYPE_EA, GFS2_FORMAT_EA); |
624 | gfs2_buffer_clear_tail(*bhp, sizeof(struct gfs2_meta_header)); | |
625 | ||
626 | ea = GFS2_EA_BH2FIRST(*bhp); | |
627 | ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); | |
628 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
629 | ea->ea_flags = GFS2_EAFLAG_LAST; | |
630 | ea->ea_num_ptrs = 0; | |
631 | ||
77658aad | 632 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa DT |
633 | |
634 | return 0; | |
635 | } | |
636 | ||
637 | /** | |
638 | * ea_write - writes the request info to an ea, creating new blocks if | |
639 | * necessary | |
cca195c5 SW |
640 | * @ip: inode that is being modified |
641 | * @ea: the location of the new ea in a block | |
b3b94faa DT |
642 | * @er: the write request |
643 | * | |
644 | * Note: does not update ea_rec_len or the GFS2_EAFLAG_LAST bin of ea_flags | |
645 | * | |
646 | * returns : errno | |
647 | */ | |
648 | ||
649 | static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea, | |
650 | struct gfs2_ea_request *er) | |
651 | { | |
feaa7bba | 652 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
09010978 | 653 | int error; |
b3b94faa DT |
654 | |
655 | ea->ea_data_len = cpu_to_be32(er->er_data_len); | |
656 | ea->ea_name_len = er->er_name_len; | |
657 | ea->ea_type = er->er_type; | |
658 | ea->__pad = 0; | |
659 | ||
660 | memcpy(GFS2_EA2NAME(ea), er->er_name, er->er_name_len); | |
661 | ||
662 | if (GFS2_EAREQ_SIZE_STUFFED(er) <= sdp->sd_jbsize) { | |
663 | ea->ea_num_ptrs = 0; | |
664 | memcpy(GFS2_EA2DATA(ea), er->er_data, er->er_data_len); | |
665 | } else { | |
b44b84d7 | 666 | __be64 *dataptr = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
667 | const char *data = er->er_data; |
668 | unsigned int data_len = er->er_data_len; | |
669 | unsigned int copy; | |
670 | unsigned int x; | |
671 | ||
5c676f6d | 672 | ea->ea_num_ptrs = DIV_ROUND_UP(er->er_data_len, sdp->sd_jbsize); |
b3b94faa DT |
673 | for (x = 0; x < ea->ea_num_ptrs; x++) { |
674 | struct buffer_head *bh; | |
cd915493 | 675 | u64 block; |
b3b94faa | 676 | int mh_size = sizeof(struct gfs2_meta_header); |
b45e41d7 | 677 | unsigned int n = 1; |
b3b94faa | 678 | |
6e87ed0f | 679 | error = gfs2_alloc_blocks(ip, &block, &n, 0, NULL); |
09010978 SW |
680 | if (error) |
681 | return error; | |
5731be53 | 682 | gfs2_trans_add_unrevoke(sdp, block, 1); |
b3b94faa | 683 | bh = gfs2_meta_new(ip->i_gl, block); |
d4e9c4c3 | 684 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
b3b94faa DT |
685 | gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED); |
686 | ||
77658aad | 687 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa | 688 | |
cca195c5 SW |
689 | copy = data_len > sdp->sd_jbsize ? sdp->sd_jbsize : |
690 | data_len; | |
b3b94faa DT |
691 | memcpy(bh->b_data + mh_size, data, copy); |
692 | if (copy < sdp->sd_jbsize) | |
693 | memset(bh->b_data + mh_size + copy, 0, | |
694 | sdp->sd_jbsize - copy); | |
695 | ||
cca195c5 | 696 | *dataptr++ = cpu_to_be64(bh->b_blocknr); |
b3b94faa DT |
697 | data += copy; |
698 | data_len -= copy; | |
699 | ||
700 | brelse(bh); | |
701 | } | |
702 | ||
703 | gfs2_assert_withdraw(sdp, !data_len); | |
704 | } | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
709 | typedef int (*ea_skeleton_call_t) (struct gfs2_inode *ip, | |
cca195c5 | 710 | struct gfs2_ea_request *er, void *private); |
b3b94faa DT |
711 | |
712 | static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
713 | unsigned int blks, | |
cca195c5 | 714 | ea_skeleton_call_t skeleton_call, void *private) |
b3b94faa | 715 | { |
564e12b1 | 716 | struct gfs2_qadata *qa; |
b3b94faa DT |
717 | struct buffer_head *dibh; |
718 | int error; | |
719 | ||
564e12b1 BP |
720 | qa = gfs2_qadata_get(ip); |
721 | if (!qa) | |
182fe5ab | 722 | return -ENOMEM; |
b3b94faa | 723 | |
d82661d9 | 724 | error = gfs2_quota_lock_check(ip); |
b3b94faa DT |
725 | if (error) |
726 | goto out; | |
727 | ||
564e12b1 | 728 | error = gfs2_inplace_reserve(ip, blks); |
b3b94faa DT |
729 | if (error) |
730 | goto out_gunlock_q; | |
731 | ||
feaa7bba | 732 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), |
54335b1f | 733 | blks + gfs2_rg_blocks(ip) + |
b3b94faa DT |
734 | RES_DINODE + RES_STATFS + RES_QUOTA, 0); |
735 | if (error) | |
736 | goto out_ipres; | |
737 | ||
738 | error = skeleton_call(ip, er, private); | |
739 | if (error) | |
740 | goto out_end_trans; | |
741 | ||
742 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
743 | if (!error) { | |
4bd91ba1 | 744 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 745 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 746 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
747 | brelse(dibh); |
748 | } | |
749 | ||
a91ea69f | 750 | out_end_trans: |
feaa7bba | 751 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
a91ea69f | 752 | out_ipres: |
b3b94faa | 753 | gfs2_inplace_release(ip); |
a91ea69f | 754 | out_gunlock_q: |
b3b94faa | 755 | gfs2_quota_unlock(ip); |
a91ea69f | 756 | out: |
564e12b1 | 757 | gfs2_qadata_put(ip); |
b3b94faa DT |
758 | return error; |
759 | } | |
760 | ||
761 | static int ea_init_i(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
762 | void *private) | |
763 | { | |
764 | struct buffer_head *bh; | |
765 | int error; | |
766 | ||
767 | error = ea_alloc_blk(ip, &bh); | |
768 | if (error) | |
769 | return error; | |
770 | ||
3767ac21 | 771 | ip->i_eattr = bh->b_blocknr; |
b3b94faa DT |
772 | error = ea_write(ip, GFS2_EA_BH2FIRST(bh), er); |
773 | ||
774 | brelse(bh); | |
775 | ||
776 | return error; | |
777 | } | |
778 | ||
779 | /** | |
780 | * ea_init - initializes a new eattr block | |
781 | * @ip: | |
782 | * @er: | |
783 | * | |
784 | * Returns: errno | |
785 | */ | |
786 | ||
40b78a32 SW |
787 | static int ea_init(struct gfs2_inode *ip, int type, const char *name, |
788 | const void *data, size_t size) | |
b3b94faa | 789 | { |
40b78a32 | 790 | struct gfs2_ea_request er; |
feaa7bba | 791 | unsigned int jbsize = GFS2_SB(&ip->i_inode)->sd_jbsize; |
b3b94faa DT |
792 | unsigned int blks = 1; |
793 | ||
40b78a32 SW |
794 | er.er_type = type; |
795 | er.er_name = name; | |
796 | er.er_name_len = strlen(name); | |
797 | er.er_data = (void *)data; | |
798 | er.er_data_len = size; | |
799 | ||
800 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > jbsize) | |
801 | blks += DIV_ROUND_UP(er.er_data_len, jbsize); | |
b3b94faa | 802 | |
40b78a32 | 803 | return ea_alloc_skeleton(ip, &er, blks, ea_init_i, NULL); |
b3b94faa DT |
804 | } |
805 | ||
806 | static struct gfs2_ea_header *ea_split_ea(struct gfs2_ea_header *ea) | |
807 | { | |
cd915493 | 808 | u32 ea_size = GFS2_EA_SIZE(ea); |
568f4c96 SW |
809 | struct gfs2_ea_header *new = (struct gfs2_ea_header *)((char *)ea + |
810 | ea_size); | |
cd915493 | 811 | u32 new_size = GFS2_EA_REC_LEN(ea) - ea_size; |
b3b94faa DT |
812 | int last = ea->ea_flags & GFS2_EAFLAG_LAST; |
813 | ||
814 | ea->ea_rec_len = cpu_to_be32(ea_size); | |
815 | ea->ea_flags ^= last; | |
816 | ||
817 | new->ea_rec_len = cpu_to_be32(new_size); | |
818 | new->ea_flags = last; | |
819 | ||
820 | return new; | |
821 | } | |
822 | ||
823 | static void ea_set_remove_stuffed(struct gfs2_inode *ip, | |
824 | struct gfs2_ea_location *el) | |
825 | { | |
826 | struct gfs2_ea_header *ea = el->el_ea; | |
827 | struct gfs2_ea_header *prev = el->el_prev; | |
cd915493 | 828 | u32 len; |
b3b94faa | 829 | |
d4e9c4c3 | 830 | gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1); |
b3b94faa DT |
831 | |
832 | if (!prev || !GFS2_EA_IS_STUFFED(ea)) { | |
833 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
834 | return; | |
835 | } else if (GFS2_EA2NEXT(prev) != ea) { | |
836 | prev = GFS2_EA2NEXT(prev); | |
feaa7bba | 837 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), GFS2_EA2NEXT(prev) == ea); |
b3b94faa DT |
838 | } |
839 | ||
840 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
841 | prev->ea_rec_len = cpu_to_be32(len); | |
842 | ||
843 | if (GFS2_EA_IS_LAST(ea)) | |
844 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
845 | } | |
846 | ||
847 | struct ea_set { | |
848 | int ea_split; | |
849 | ||
850 | struct gfs2_ea_request *es_er; | |
851 | struct gfs2_ea_location *es_el; | |
852 | ||
853 | struct buffer_head *es_bh; | |
854 | struct gfs2_ea_header *es_ea; | |
855 | }; | |
856 | ||
857 | static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, | |
858 | struct gfs2_ea_header *ea, struct ea_set *es) | |
859 | { | |
860 | struct gfs2_ea_request *er = es->es_er; | |
861 | struct buffer_head *dibh; | |
862 | int error; | |
863 | ||
feaa7bba | 864 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + 2 * RES_EATTR, 0); |
b3b94faa DT |
865 | if (error) |
866 | return error; | |
867 | ||
d4e9c4c3 | 868 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
b3b94faa DT |
869 | |
870 | if (es->ea_split) | |
871 | ea = ea_split_ea(ea); | |
872 | ||
873 | ea_write(ip, ea, er); | |
874 | ||
875 | if (es->es_el) | |
876 | ea_set_remove_stuffed(ip, es->es_el); | |
877 | ||
878 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
879 | if (error) | |
880 | goto out; | |
4bd91ba1 | 881 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 882 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 883 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa | 884 | brelse(dibh); |
a91ea69f | 885 | out: |
feaa7bba | 886 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
887 | return error; |
888 | } | |
889 | ||
890 | static int ea_set_simple_alloc(struct gfs2_inode *ip, | |
891 | struct gfs2_ea_request *er, void *private) | |
892 | { | |
893 | struct ea_set *es = private; | |
894 | struct gfs2_ea_header *ea = es->es_ea; | |
895 | int error; | |
896 | ||
d4e9c4c3 | 897 | gfs2_trans_add_bh(ip->i_gl, es->es_bh, 1); |
b3b94faa DT |
898 | |
899 | if (es->ea_split) | |
900 | ea = ea_split_ea(ea); | |
901 | ||
902 | error = ea_write(ip, ea, er); | |
903 | if (error) | |
904 | return error; | |
905 | ||
906 | if (es->es_el) | |
907 | ea_set_remove_stuffed(ip, es->es_el); | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
912 | static int ea_set_simple(struct gfs2_inode *ip, struct buffer_head *bh, | |
913 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
914 | void *private) | |
915 | { | |
916 | struct ea_set *es = private; | |
917 | unsigned int size; | |
918 | int stuffed; | |
919 | int error; | |
920 | ||
40b78a32 SW |
921 | stuffed = ea_calc_size(GFS2_SB(&ip->i_inode), es->es_er->er_name_len, |
922 | es->es_er->er_data_len, &size); | |
b3b94faa DT |
923 | |
924 | if (ea->ea_type == GFS2_EATYPE_UNUSED) { | |
925 | if (GFS2_EA_REC_LEN(ea) < size) | |
926 | return 0; | |
927 | if (!GFS2_EA_IS_STUFFED(ea)) { | |
928 | error = ea_remove_unstuffed(ip, bh, ea, prev, 1); | |
929 | if (error) | |
930 | return error; | |
931 | } | |
932 | es->ea_split = 0; | |
933 | } else if (GFS2_EA_REC_LEN(ea) - GFS2_EA_SIZE(ea) >= size) | |
934 | es->ea_split = 1; | |
935 | else | |
936 | return 0; | |
937 | ||
938 | if (stuffed) { | |
939 | error = ea_set_simple_noalloc(ip, bh, ea, es); | |
940 | if (error) | |
941 | return error; | |
942 | } else { | |
943 | unsigned int blks; | |
944 | ||
945 | es->es_bh = bh; | |
946 | es->es_ea = ea; | |
5c676f6d | 947 | blks = 2 + DIV_ROUND_UP(es->es_er->er_data_len, |
feaa7bba | 948 | GFS2_SB(&ip->i_inode)->sd_jbsize); |
b3b94faa DT |
949 | |
950 | error = ea_alloc_skeleton(ip, es->es_er, blks, | |
951 | ea_set_simple_alloc, es); | |
952 | if (error) | |
953 | return error; | |
954 | } | |
955 | ||
956 | return 1; | |
957 | } | |
958 | ||
959 | static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
960 | void *private) | |
961 | { | |
feaa7bba | 962 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa | 963 | struct buffer_head *indbh, *newbh; |
b44b84d7 | 964 | __be64 *eablk; |
b3b94faa DT |
965 | int error; |
966 | int mh_size = sizeof(struct gfs2_meta_header); | |
967 | ||
383f01fb | 968 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { |
b44b84d7 | 969 | __be64 *end; |
b3b94faa | 970 | |
3767ac21 | 971 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, |
7276b3b0 | 972 | &indbh); |
b3b94faa DT |
973 | if (error) |
974 | return error; | |
975 | ||
976 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { | |
977 | error = -EIO; | |
978 | goto out; | |
979 | } | |
980 | ||
b44b84d7 | 981 | eablk = (__be64 *)(indbh->b_data + mh_size); |
b3b94faa DT |
982 | end = eablk + sdp->sd_inptrs; |
983 | ||
984 | for (; eablk < end; eablk++) | |
985 | if (!*eablk) | |
986 | break; | |
987 | ||
988 | if (eablk == end) { | |
989 | error = -ENOSPC; | |
990 | goto out; | |
991 | } | |
992 | ||
d4e9c4c3 | 993 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
b3b94faa | 994 | } else { |
cd915493 | 995 | u64 blk; |
b45e41d7 | 996 | unsigned int n = 1; |
6e87ed0f | 997 | error = gfs2_alloc_blocks(ip, &blk, &n, 0, NULL); |
09010978 SW |
998 | if (error) |
999 | return error; | |
5731be53 | 1000 | gfs2_trans_add_unrevoke(sdp, blk, 1); |
b3b94faa | 1001 | indbh = gfs2_meta_new(ip->i_gl, blk); |
d4e9c4c3 | 1002 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
b3b94faa DT |
1003 | gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN); |
1004 | gfs2_buffer_clear_tail(indbh, mh_size); | |
1005 | ||
b44b84d7 | 1006 | eablk = (__be64 *)(indbh->b_data + mh_size); |
3767ac21 SW |
1007 | *eablk = cpu_to_be64(ip->i_eattr); |
1008 | ip->i_eattr = blk; | |
383f01fb | 1009 | ip->i_diskflags |= GFS2_DIF_EA_INDIRECT; |
77658aad | 1010 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa DT |
1011 | |
1012 | eablk++; | |
1013 | } | |
1014 | ||
1015 | error = ea_alloc_blk(ip, &newbh); | |
1016 | if (error) | |
1017 | goto out; | |
1018 | ||
cd915493 | 1019 | *eablk = cpu_to_be64((u64)newbh->b_blocknr); |
b3b94faa DT |
1020 | error = ea_write(ip, GFS2_EA_BH2FIRST(newbh), er); |
1021 | brelse(newbh); | |
1022 | if (error) | |
1023 | goto out; | |
1024 | ||
1025 | if (private) | |
cca195c5 | 1026 | ea_set_remove_stuffed(ip, private); |
b3b94faa | 1027 | |
a91ea69f | 1028 | out: |
b3b94faa | 1029 | brelse(indbh); |
b3b94faa DT |
1030 | return error; |
1031 | } | |
1032 | ||
40b78a32 SW |
1033 | static int ea_set_i(struct gfs2_inode *ip, int type, const char *name, |
1034 | const void *value, size_t size, struct gfs2_ea_location *el) | |
b3b94faa | 1035 | { |
40b78a32 | 1036 | struct gfs2_ea_request er; |
b3b94faa DT |
1037 | struct ea_set es; |
1038 | unsigned int blks = 2; | |
1039 | int error; | |
1040 | ||
40b78a32 SW |
1041 | er.er_type = type; |
1042 | er.er_name = name; | |
1043 | er.er_data = (void *)value; | |
1044 | er.er_name_len = strlen(name); | |
1045 | er.er_data_len = size; | |
1046 | ||
b3b94faa | 1047 | memset(&es, 0, sizeof(struct ea_set)); |
40b78a32 | 1048 | es.es_er = &er; |
b3b94faa DT |
1049 | es.es_el = el; |
1050 | ||
1051 | error = ea_foreach(ip, ea_set_simple, &es); | |
1052 | if (error > 0) | |
1053 | return 0; | |
1054 | if (error) | |
1055 | return error; | |
1056 | ||
383f01fb | 1057 | if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) |
b3b94faa | 1058 | blks++; |
40b78a32 SW |
1059 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > GFS2_SB(&ip->i_inode)->sd_jbsize) |
1060 | blks += DIV_ROUND_UP(er.er_data_len, GFS2_SB(&ip->i_inode)->sd_jbsize); | |
b3b94faa | 1061 | |
40b78a32 | 1062 | return ea_alloc_skeleton(ip, &er, blks, ea_set_block, el); |
b3b94faa DT |
1063 | } |
1064 | ||
1065 | static int ea_set_remove_unstuffed(struct gfs2_inode *ip, | |
1066 | struct gfs2_ea_location *el) | |
1067 | { | |
1068 | if (el->el_prev && GFS2_EA2NEXT(el->el_prev) != el->el_ea) { | |
1069 | el->el_prev = GFS2_EA2NEXT(el->el_prev); | |
feaa7bba | 1070 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), |
b3b94faa DT |
1071 | GFS2_EA2NEXT(el->el_prev) == el->el_ea); |
1072 | } | |
1073 | ||
86d00636 | 1074 | return ea_remove_unstuffed(ip, el->el_bh, el->el_ea, el->el_prev, 0); |
b3b94faa DT |
1075 | } |
1076 | ||
b3b94faa DT |
1077 | static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el) |
1078 | { | |
1079 | struct gfs2_ea_header *ea = el->el_ea; | |
1080 | struct gfs2_ea_header *prev = el->el_prev; | |
1081 | struct buffer_head *dibh; | |
1082 | int error; | |
1083 | ||
feaa7bba | 1084 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0); |
b3b94faa DT |
1085 | if (error) |
1086 | return error; | |
1087 | ||
d4e9c4c3 | 1088 | gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1); |
b3b94faa DT |
1089 | |
1090 | if (prev) { | |
cd915493 | 1091 | u32 len; |
b3b94faa DT |
1092 | |
1093 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
1094 | prev->ea_rec_len = cpu_to_be32(len); | |
1095 | ||
1096 | if (GFS2_EA_IS_LAST(ea)) | |
1097 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
40b78a32 | 1098 | } else { |
b3b94faa | 1099 | ea->ea_type = GFS2_EATYPE_UNUSED; |
40b78a32 | 1100 | } |
b3b94faa DT |
1101 | |
1102 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1103 | if (!error) { | |
4bd91ba1 | 1104 | ip->i_inode.i_ctime = CURRENT_TIME; |
d4e9c4c3 | 1105 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 1106 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa | 1107 | brelse(dibh); |
907b9bce | 1108 | } |
b3b94faa | 1109 | |
feaa7bba | 1110 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
1111 | |
1112 | return error; | |
1113 | } | |
1114 | ||
40b78a32 SW |
1115 | /** |
1116 | * gfs2_xattr_remove - Remove a GFS2 extended attribute | |
431547b3 | 1117 | * @ip: The inode |
40b78a32 SW |
1118 | * @type: The type of the extended attribute |
1119 | * @name: The name of the extended attribute | |
1120 | * | |
1121 | * This is not called directly by the VFS since we use the (common) | |
1122 | * scheme of making a "set with NULL data" mean a remove request. Note | |
1123 | * that this is different from a set with zero length data. | |
1124 | * | |
1125 | * Returns: 0, or errno on failure | |
1126 | */ | |
1127 | ||
431547b3 | 1128 | static int gfs2_xattr_remove(struct gfs2_inode *ip, int type, const char *name) |
b3b94faa DT |
1129 | { |
1130 | struct gfs2_ea_location el; | |
1131 | int error; | |
1132 | ||
3767ac21 | 1133 | if (!ip->i_eattr) |
b3b94faa DT |
1134 | return -ENODATA; |
1135 | ||
40b78a32 | 1136 | error = gfs2_ea_find(ip, type, name, &el); |
b3b94faa DT |
1137 | if (error) |
1138 | return error; | |
1139 | if (!el.el_ea) | |
1140 | return -ENODATA; | |
1141 | ||
1142 | if (GFS2_EA_IS_STUFFED(el.el_ea)) | |
1143 | error = ea_remove_stuffed(ip, &el); | |
1144 | else | |
40b78a32 | 1145 | error = ea_remove_unstuffed(ip, el.el_bh, el.el_ea, el.el_prev, 0); |
b3b94faa DT |
1146 | |
1147 | brelse(el.el_bh); | |
1148 | ||
1149 | return error; | |
1150 | } | |
1151 | ||
1152 | /** | |
431547b3 CH |
1153 | * __gfs2_xattr_set - Set (or remove) a GFS2 extended attribute |
1154 | * @ip: The inode | |
40b78a32 SW |
1155 | * @name: The name of the extended attribute |
1156 | * @value: The value of the extended attribute (NULL for remove) | |
1157 | * @size: The size of the @value argument | |
1158 | * @flags: Create or Replace | |
431547b3 | 1159 | * @type: The type of the extended attribute |
b3b94faa | 1160 | * |
40b78a32 SW |
1161 | * See gfs2_xattr_remove() for details of the removal of xattrs. |
1162 | * | |
1163 | * Returns: 0 or errno on failure | |
b3b94faa DT |
1164 | */ |
1165 | ||
431547b3 CH |
1166 | int __gfs2_xattr_set(struct inode *inode, const char *name, |
1167 | const void *value, size_t size, int flags, int type) | |
b3b94faa | 1168 | { |
40b78a32 | 1169 | struct gfs2_inode *ip = GFS2_I(inode); |
431547b3 | 1170 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
40b78a32 SW |
1171 | struct gfs2_ea_location el; |
1172 | unsigned int namel = strlen(name); | |
b3b94faa DT |
1173 | int error; |
1174 | ||
40b78a32 SW |
1175 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1176 | return -EPERM; | |
1177 | if (namel > GFS2_EA_MAX_NAME_LEN) | |
1178 | return -ERANGE; | |
b3b94faa | 1179 | |
40b78a32 | 1180 | if (value == NULL) |
431547b3 | 1181 | return gfs2_xattr_remove(ip, type, name); |
40b78a32 SW |
1182 | |
1183 | if (ea_check_size(sdp, namel, size)) | |
1184 | return -ERANGE; | |
1185 | ||
1186 | if (!ip->i_eattr) { | |
1187 | if (flags & XATTR_REPLACE) | |
1188 | return -ENODATA; | |
1189 | return ea_init(ip, type, name, value, size); | |
1190 | } | |
1191 | ||
1192 | error = gfs2_ea_find(ip, type, name, &el); | |
b3b94faa DT |
1193 | if (error) |
1194 | return error; | |
1195 | ||
40b78a32 SW |
1196 | if (el.el_ea) { |
1197 | if (ip->i_diskflags & GFS2_DIF_APPENDONLY) { | |
1198 | brelse(el.el_bh); | |
1199 | return -EPERM; | |
1200 | } | |
b3b94faa | 1201 | |
40b78a32 SW |
1202 | error = -EEXIST; |
1203 | if (!(flags & XATTR_CREATE)) { | |
1204 | int unstuffed = !GFS2_EA_IS_STUFFED(el.el_ea); | |
1205 | error = ea_set_i(ip, type, name, value, size, &el); | |
1206 | if (!error && unstuffed) | |
1207 | ea_set_remove_unstuffed(ip, &el); | |
1208 | } | |
1209 | ||
1210 | brelse(el.el_bh); | |
1211 | return error; | |
1212 | } | |
1213 | ||
1214 | error = -ENODATA; | |
1215 | if (!(flags & XATTR_REPLACE)) | |
1216 | error = ea_set_i(ip, type, name, value, size, NULL); | |
b3b94faa DT |
1217 | |
1218 | return error; | |
1219 | } | |
1220 | ||
431547b3 CH |
1221 | static int gfs2_xattr_set(struct dentry *dentry, const char *name, |
1222 | const void *value, size_t size, int flags, int type) | |
1223 | { | |
1224 | return __gfs2_xattr_set(dentry->d_inode, name, value, | |
1225 | size, flags, type); | |
1226 | } | |
1227 | ||
b3b94faa DT |
1228 | static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip, |
1229 | struct gfs2_ea_header *ea, char *data) | |
1230 | { | |
feaa7bba | 1231 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
1232 | struct buffer_head **bh; |
1233 | unsigned int amount = GFS2_EA_DATA_LEN(ea); | |
5c676f6d | 1234 | unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); |
b44b84d7 | 1235 | __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
1236 | unsigned int x; |
1237 | int error; | |
1238 | ||
16c5f06f | 1239 | bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); |
b3b94faa DT |
1240 | if (!bh) |
1241 | return -ENOMEM; | |
1242 | ||
1243 | error = gfs2_trans_begin(sdp, nptrs + RES_DINODE, 0); | |
1244 | if (error) | |
1245 | goto out; | |
1246 | ||
1247 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 SW |
1248 | error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, |
1249 | bh + x); | |
b3b94faa DT |
1250 | if (error) { |
1251 | while (x--) | |
1252 | brelse(bh[x]); | |
1253 | goto fail; | |
1254 | } | |
1255 | dataptrs++; | |
1256 | } | |
1257 | ||
1258 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 | 1259 | error = gfs2_meta_wait(sdp, bh[x]); |
b3b94faa DT |
1260 | if (error) { |
1261 | for (; x < nptrs; x++) | |
1262 | brelse(bh[x]); | |
1263 | goto fail; | |
1264 | } | |
1265 | if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) { | |
1266 | for (; x < nptrs; x++) | |
1267 | brelse(bh[x]); | |
1268 | error = -EIO; | |
1269 | goto fail; | |
1270 | } | |
1271 | ||
d4e9c4c3 | 1272 | gfs2_trans_add_bh(ip->i_gl, bh[x], 1); |
b3b94faa | 1273 | |
cca195c5 | 1274 | memcpy(bh[x]->b_data + sizeof(struct gfs2_meta_header), data, |
b3b94faa DT |
1275 | (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize); |
1276 | ||
1277 | amount -= sdp->sd_jbsize; | |
1278 | data += sdp->sd_jbsize; | |
1279 | ||
1280 | brelse(bh[x]); | |
1281 | } | |
1282 | ||
a91ea69f | 1283 | out: |
b3b94faa | 1284 | kfree(bh); |
b3b94faa DT |
1285 | return error; |
1286 | ||
a91ea69f | 1287 | fail: |
b3b94faa DT |
1288 | gfs2_trans_end(sdp); |
1289 | kfree(bh); | |
b3b94faa DT |
1290 | return error; |
1291 | } | |
1292 | ||
479c427d | 1293 | int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data) |
b3b94faa | 1294 | { |
ab9bbda0 SW |
1295 | struct inode *inode = &ip->i_inode; |
1296 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
479c427d | 1297 | struct gfs2_ea_location el; |
b3b94faa DT |
1298 | int error; |
1299 | ||
479c427d SW |
1300 | error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, GFS2_POSIX_ACL_ACCESS, &el); |
1301 | if (error) | |
1302 | return error; | |
1303 | ||
1304 | if (GFS2_EA_IS_STUFFED(el.el_ea)) { | |
e412bdb1 SW |
1305 | error = gfs2_trans_begin(sdp, RES_DINODE + RES_EATTR, 0); |
1306 | if (error == 0) { | |
1307 | gfs2_trans_add_bh(ip->i_gl, el.el_bh, 1); | |
1308 | memcpy(GFS2_EA2DATA(el.el_ea), data, | |
1309 | GFS2_EA_DATA_LEN(el.el_ea)); | |
1310 | } | |
1311 | } else { | |
479c427d | 1312 | error = ea_acl_chmod_unstuffed(ip, el.el_ea, data); |
e412bdb1 | 1313 | } |
b3b94faa | 1314 | |
e412bdb1 | 1315 | brelse(el.el_bh); |
b3b94faa DT |
1316 | if (error) |
1317 | return error; | |
1318 | ||
ab9bbda0 | 1319 | error = gfs2_setattr_simple(inode, attr); |
e412bdb1 | 1320 | gfs2_trans_end(sdp); |
b3b94faa DT |
1321 | return error; |
1322 | } | |
1323 | ||
1324 | static int ea_dealloc_indirect(struct gfs2_inode *ip) | |
1325 | { | |
feaa7bba | 1326 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
1327 | struct gfs2_rgrp_list rlist; |
1328 | struct buffer_head *indbh, *dibh; | |
b44b84d7 | 1329 | __be64 *eablk, *end; |
b3b94faa | 1330 | unsigned int rg_blocks = 0; |
cd915493 | 1331 | u64 bstart = 0; |
b3b94faa DT |
1332 | unsigned int blen = 0; |
1333 | unsigned int blks = 0; | |
1334 | unsigned int x; | |
1335 | int error; | |
1336 | ||
5e2f7d61 BP |
1337 | error = gfs2_rindex_update(sdp); |
1338 | if (error) | |
1339 | return error; | |
1340 | ||
b3b94faa DT |
1341 | memset(&rlist, 0, sizeof(struct gfs2_rgrp_list)); |
1342 | ||
3767ac21 | 1343 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &indbh); |
b3b94faa DT |
1344 | if (error) |
1345 | return error; | |
1346 | ||
1347 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { | |
1348 | error = -EIO; | |
1349 | goto out; | |
1350 | } | |
1351 | ||
b44b84d7 | 1352 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
b3b94faa DT |
1353 | end = eablk + sdp->sd_inptrs; |
1354 | ||
1355 | for (; eablk < end; eablk++) { | |
cd915493 | 1356 | u64 bn; |
b3b94faa DT |
1357 | |
1358 | if (!*eablk) | |
1359 | break; | |
1360 | bn = be64_to_cpu(*eablk); | |
1361 | ||
1362 | if (bstart + blen == bn) | |
1363 | blen++; | |
1364 | else { | |
1365 | if (bstart) | |
70b0c365 | 1366 | gfs2_rlist_add(ip, &rlist, bstart); |
b3b94faa DT |
1367 | bstart = bn; |
1368 | blen = 1; | |
1369 | } | |
1370 | blks++; | |
1371 | } | |
1372 | if (bstart) | |
70b0c365 | 1373 | gfs2_rlist_add(ip, &rlist, bstart); |
b3b94faa DT |
1374 | else |
1375 | goto out; | |
1376 | ||
fe6c991c | 1377 | gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE); |
b3b94faa DT |
1378 | |
1379 | for (x = 0; x < rlist.rl_rgrps; x++) { | |
1380 | struct gfs2_rgrpd *rgd; | |
5c676f6d | 1381 | rgd = rlist.rl_ghs[x].gh_gl->gl_object; |
bb8d8a6f | 1382 | rg_blocks += rgd->rd_length; |
b3b94faa DT |
1383 | } |
1384 | ||
1385 | error = gfs2_glock_nq_m(rlist.rl_rgrps, rlist.rl_ghs); | |
1386 | if (error) | |
1387 | goto out_rlist_free; | |
1388 | ||
cca195c5 SW |
1389 | error = gfs2_trans_begin(sdp, rg_blocks + RES_DINODE + RES_INDIRECT + |
1390 | RES_STATFS + RES_QUOTA, blks); | |
b3b94faa DT |
1391 | if (error) |
1392 | goto out_gunlock; | |
1393 | ||
d4e9c4c3 | 1394 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
b3b94faa | 1395 | |
b44b84d7 | 1396 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
b3b94faa DT |
1397 | bstart = 0; |
1398 | blen = 0; | |
1399 | ||
1400 | for (; eablk < end; eablk++) { | |
cd915493 | 1401 | u64 bn; |
b3b94faa DT |
1402 | |
1403 | if (!*eablk) | |
1404 | break; | |
1405 | bn = be64_to_cpu(*eablk); | |
1406 | ||
1407 | if (bstart + blen == bn) | |
1408 | blen++; | |
1409 | else { | |
1410 | if (bstart) | |
1411 | gfs2_free_meta(ip, bstart, blen); | |
1412 | bstart = bn; | |
1413 | blen = 1; | |
1414 | } | |
1415 | ||
1416 | *eablk = 0; | |
77658aad | 1417 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
1418 | } |
1419 | if (bstart) | |
1420 | gfs2_free_meta(ip, bstart, blen); | |
1421 | ||
383f01fb | 1422 | ip->i_diskflags &= ~GFS2_DIF_EA_INDIRECT; |
b3b94faa DT |
1423 | |
1424 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1425 | if (!error) { | |
d4e9c4c3 | 1426 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 1427 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
1428 | brelse(dibh); |
1429 | } | |
1430 | ||
1431 | gfs2_trans_end(sdp); | |
1432 | ||
a91ea69f | 1433 | out_gunlock: |
b3b94faa | 1434 | gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs); |
a91ea69f | 1435 | out_rlist_free: |
b3b94faa | 1436 | gfs2_rlist_free(&rlist); |
a91ea69f | 1437 | out: |
b3b94faa | 1438 | brelse(indbh); |
b3b94faa DT |
1439 | return error; |
1440 | } | |
1441 | ||
1442 | static int ea_dealloc_block(struct gfs2_inode *ip) | |
1443 | { | |
feaa7bba | 1444 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
1445 | struct gfs2_rgrpd *rgd; |
1446 | struct buffer_head *dibh; | |
564e12b1 | 1447 | struct gfs2_holder gh; |
b3b94faa DT |
1448 | int error; |
1449 | ||
5e2f7d61 BP |
1450 | error = gfs2_rindex_update(sdp); |
1451 | if (error) | |
1452 | return error; | |
1453 | ||
66fc061b | 1454 | rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr, 1); |
b3b94faa DT |
1455 | if (!rgd) { |
1456 | gfs2_consist_inode(ip); | |
1457 | return -EIO; | |
1458 | } | |
1459 | ||
564e12b1 | 1460 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh); |
b3b94faa DT |
1461 | if (error) |
1462 | return error; | |
1463 | ||
cca195c5 SW |
1464 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_DINODE + RES_STATFS + |
1465 | RES_QUOTA, 1); | |
b3b94faa DT |
1466 | if (error) |
1467 | goto out_gunlock; | |
1468 | ||
3767ac21 | 1469 | gfs2_free_meta(ip, ip->i_eattr, 1); |
b3b94faa | 1470 | |
3767ac21 | 1471 | ip->i_eattr = 0; |
77658aad | 1472 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
1473 | |
1474 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1475 | if (!error) { | |
d4e9c4c3 | 1476 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
539e5d6b | 1477 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
1478 | brelse(dibh); |
1479 | } | |
1480 | ||
1481 | gfs2_trans_end(sdp); | |
1482 | ||
a91ea69f | 1483 | out_gunlock: |
564e12b1 | 1484 | gfs2_glock_dq_uninit(&gh); |
b3b94faa DT |
1485 | return error; |
1486 | } | |
1487 | ||
1488 | /** | |
1489 | * gfs2_ea_dealloc - deallocate the extended attribute fork | |
1490 | * @ip: the inode | |
1491 | * | |
1492 | * Returns: errno | |
1493 | */ | |
1494 | ||
1495 | int gfs2_ea_dealloc(struct gfs2_inode *ip) | |
1496 | { | |
564e12b1 | 1497 | struct gfs2_qadata *qa; |
b3b94faa DT |
1498 | int error; |
1499 | ||
564e12b1 BP |
1500 | qa = gfs2_qadata_get(ip); |
1501 | if (!qa) | |
182fe5ab | 1502 | return -ENOMEM; |
b3b94faa DT |
1503 | |
1504 | error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); | |
1505 | if (error) | |
1506 | goto out_alloc; | |
1507 | ||
b3b94faa DT |
1508 | error = ea_foreach(ip, ea_dealloc_unstuffed, NULL); |
1509 | if (error) | |
8339ee54 | 1510 | goto out_quota; |
b3b94faa | 1511 | |
383f01fb | 1512 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { |
b3b94faa DT |
1513 | error = ea_dealloc_indirect(ip); |
1514 | if (error) | |
8339ee54 | 1515 | goto out_quota; |
b3b94faa DT |
1516 | } |
1517 | ||
1518 | error = ea_dealloc_block(ip); | |
1519 | ||
a91ea69f | 1520 | out_quota: |
b3b94faa | 1521 | gfs2_quota_unhold(ip); |
a91ea69f | 1522 | out_alloc: |
564e12b1 | 1523 | gfs2_qadata_put(ip); |
b3b94faa DT |
1524 | return error; |
1525 | } | |
1526 | ||
b7bb0a12 | 1527 | static const struct xattr_handler gfs2_xattr_user_handler = { |
40b78a32 | 1528 | .prefix = XATTR_USER_PREFIX, |
431547b3 CH |
1529 | .flags = GFS2_EATYPE_USR, |
1530 | .get = gfs2_xattr_get, | |
1531 | .set = gfs2_xattr_set, | |
40b78a32 SW |
1532 | }; |
1533 | ||
b7bb0a12 | 1534 | static const struct xattr_handler gfs2_xattr_security_handler = { |
40b78a32 | 1535 | .prefix = XATTR_SECURITY_PREFIX, |
431547b3 CH |
1536 | .flags = GFS2_EATYPE_SECURITY, |
1537 | .get = gfs2_xattr_get, | |
1538 | .set = gfs2_xattr_set, | |
40b78a32 SW |
1539 | }; |
1540 | ||
b7bb0a12 | 1541 | const struct xattr_handler *gfs2_xattr_handlers[] = { |
40b78a32 SW |
1542 | &gfs2_xattr_user_handler, |
1543 | &gfs2_xattr_security_handler, | |
1544 | &gfs2_xattr_system_handler, | |
1545 | NULL, | |
1546 | }; | |
1547 |