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7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 4 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
b3b94faa DT |
7 | #include <linux/slab.h> |
8 | #include <linux/spinlock.h> | |
9 | #include <linux/completion.h> | |
10 | #include <linux/buffer_head.h> | |
11 | #include <linux/xattr.h> | |
5c676f6d | 12 | #include <linux/gfs2_ondisk.h> |
e01580bf | 13 | #include <linux/posix_acl_xattr.h> |
7c0f6ba6 | 14 | #include <linux/uaccess.h> |
b3b94faa DT |
15 | |
16 | #include "gfs2.h" | |
5c676f6d | 17 | #include "incore.h" |
b3b94faa | 18 | #include "acl.h" |
307cf6e6 | 19 | #include "xattr.h" |
b3b94faa DT |
20 | #include "glock.h" |
21 | #include "inode.h" | |
22 | #include "meta_io.h" | |
23 | #include "quota.h" | |
24 | #include "rgrp.h" | |
27c3b415 | 25 | #include "super.h" |
b3b94faa | 26 | #include "trans.h" |
5c676f6d | 27 | #include "util.h" |
b3b94faa | 28 | |
c551f66c LJ |
29 | /* |
30 | * ea_calc_size - returns the actual number of bytes the request will take up | |
b3b94faa | 31 | * (not counting any unstuffed data blocks) |
b3b94faa DT |
32 | * |
33 | * Returns: 1 if the EA should be stuffed | |
34 | */ | |
35 | ||
40b78a32 | 36 | static int ea_calc_size(struct gfs2_sbd *sdp, unsigned int nsize, size_t dsize, |
b3b94faa DT |
37 | unsigned int *size) |
38 | { | |
40b78a32 SW |
39 | unsigned int jbsize = sdp->sd_jbsize; |
40 | ||
41 | /* Stuffed */ | |
42 | *size = ALIGN(sizeof(struct gfs2_ea_header) + nsize + dsize, 8); | |
43 | ||
44 | if (*size <= jbsize) | |
b3b94faa DT |
45 | return 1; |
46 | ||
40b78a32 SW |
47 | /* Unstuffed */ |
48 | *size = ALIGN(sizeof(struct gfs2_ea_header) + nsize + | |
49 | (sizeof(__be64) * DIV_ROUND_UP(dsize, jbsize)), 8); | |
b3b94faa DT |
50 | |
51 | return 0; | |
52 | } | |
53 | ||
40b78a32 | 54 | static int ea_check_size(struct gfs2_sbd *sdp, unsigned int nsize, size_t dsize) |
b3b94faa DT |
55 | { |
56 | unsigned int size; | |
57 | ||
40b78a32 | 58 | if (dsize > GFS2_EA_MAX_DATA_LEN) |
b3b94faa DT |
59 | return -ERANGE; |
60 | ||
40b78a32 | 61 | ea_calc_size(sdp, nsize, dsize, &size); |
b3b94faa DT |
62 | |
63 | /* This can only happen with 512 byte blocks */ | |
64 | if (size > sdp->sd_jbsize) | |
65 | return -ERANGE; | |
66 | ||
67 | return 0; | |
68 | } | |
69 | ||
866eef48 AG |
70 | static bool gfs2_eatype_valid(struct gfs2_sbd *sdp, u8 type) |
71 | { | |
72 | switch(sdp->sd_sb.sb_fs_format) { | |
73 | case GFS2_FS_FORMAT_MAX: | |
74 | return true; | |
75 | ||
76 | case GFS2_FS_FORMAT_MIN: | |
77 | return type <= GFS2_EATYPE_SECURITY; | |
78 | ||
79 | default: | |
80 | return false; | |
81 | } | |
82 | } | |
83 | ||
cca195c5 | 84 | typedef int (*ea_call_t) (struct gfs2_inode *ip, struct buffer_head *bh, |
b3b94faa | 85 | struct gfs2_ea_header *ea, |
cca195c5 | 86 | struct gfs2_ea_header *prev, void *private); |
b3b94faa DT |
87 | |
88 | static int ea_foreach_i(struct gfs2_inode *ip, struct buffer_head *bh, | |
89 | ea_call_t ea_call, void *data) | |
90 | { | |
866eef48 | 91 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
92 | struct gfs2_ea_header *ea, *prev = NULL; |
93 | int error = 0; | |
94 | ||
feaa7bba | 95 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_EA)) |
b3b94faa DT |
96 | return -EIO; |
97 | ||
98 | for (ea = GFS2_EA_BH2FIRST(bh);; prev = ea, ea = GFS2_EA2NEXT(ea)) { | |
10398ef5 AP |
99 | if (!GFS2_EA_REC_LEN(ea)) { |
100 | gfs2_consist_inode(ip); | |
101 | return -EIO; | |
102 | } | |
cca195c5 | 103 | if (!(bh->b_data <= (char *)ea && (char *)GFS2_EA2NEXT(ea) <= |
10398ef5 AP |
104 | bh->b_data + bh->b_size)) { |
105 | gfs2_consist_inode(ip); | |
106 | return -EIO; | |
107 | } | |
108 | if (!gfs2_eatype_valid(sdp, ea->ea_type)) { | |
109 | gfs2_consist_inode(ip); | |
110 | return -EIO; | |
111 | } | |
b3b94faa DT |
112 | error = ea_call(ip, bh, ea, prev, data); |
113 | if (error) | |
114 | return error; | |
115 | ||
116 | if (GFS2_EA_IS_LAST(ea)) { | |
117 | if ((char *)GFS2_EA2NEXT(ea) != | |
10398ef5 AP |
118 | bh->b_data + bh->b_size) { |
119 | gfs2_consist_inode(ip); | |
120 | return -EIO; | |
121 | } | |
b3b94faa DT |
122 | break; |
123 | } | |
124 | } | |
125 | ||
126 | return error; | |
b3b94faa DT |
127 | } |
128 | ||
129 | static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data) | |
130 | { | |
131 | struct buffer_head *bh, *eabh; | |
b44b84d7 | 132 | __be64 *eablk, *end; |
b3b94faa DT |
133 | int error; |
134 | ||
c8d57703 | 135 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, 0, &bh); |
b3b94faa DT |
136 | if (error) |
137 | return error; | |
138 | ||
383f01fb | 139 | if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) { |
b3b94faa DT |
140 | error = ea_foreach_i(ip, bh, ea_call, data); |
141 | goto out; | |
142 | } | |
143 | ||
feaa7bba | 144 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_IN)) { |
b3b94faa DT |
145 | error = -EIO; |
146 | goto out; | |
147 | } | |
148 | ||
b44b84d7 | 149 | eablk = (__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header)); |
feaa7bba | 150 | end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs; |
b3b94faa DT |
151 | |
152 | for (; eablk < end; eablk++) { | |
cd915493 | 153 | u64 bn; |
b3b94faa DT |
154 | |
155 | if (!*eablk) | |
156 | break; | |
157 | bn = be64_to_cpu(*eablk); | |
158 | ||
c8d57703 | 159 | error = gfs2_meta_read(ip->i_gl, bn, DIO_WAIT, 0, &eabh); |
b3b94faa DT |
160 | if (error) |
161 | break; | |
162 | error = ea_foreach_i(ip, eabh, ea_call, data); | |
163 | brelse(eabh); | |
164 | if (error) | |
165 | break; | |
166 | } | |
a91ea69f | 167 | out: |
b3b94faa | 168 | brelse(bh); |
b3b94faa DT |
169 | return error; |
170 | } | |
171 | ||
172 | struct ea_find { | |
40b78a32 SW |
173 | int type; |
174 | const char *name; | |
175 | size_t namel; | |
b3b94faa DT |
176 | struct gfs2_ea_location *ef_el; |
177 | }; | |
178 | ||
179 | static int ea_find_i(struct gfs2_inode *ip, struct buffer_head *bh, | |
180 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
181 | void *private) | |
182 | { | |
183 | struct ea_find *ef = private; | |
b3b94faa DT |
184 | |
185 | if (ea->ea_type == GFS2_EATYPE_UNUSED) | |
186 | return 0; | |
187 | ||
40b78a32 SW |
188 | if (ea->ea_type == ef->type) { |
189 | if (ea->ea_name_len == ef->namel && | |
190 | !memcmp(GFS2_EA2NAME(ea), ef->name, ea->ea_name_len)) { | |
b3b94faa DT |
191 | struct gfs2_ea_location *el = ef->ef_el; |
192 | get_bh(bh); | |
193 | el->el_bh = bh; | |
194 | el->el_ea = ea; | |
195 | el->el_prev = prev; | |
196 | return 1; | |
197 | } | |
198 | } | |
199 | ||
b3b94faa DT |
200 | return 0; |
201 | } | |
202 | ||
479c427d SW |
203 | static int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name, |
204 | struct gfs2_ea_location *el) | |
b3b94faa DT |
205 | { |
206 | struct ea_find ef; | |
207 | int error; | |
208 | ||
40b78a32 SW |
209 | ef.type = type; |
210 | ef.name = name; | |
211 | ef.namel = strlen(name); | |
b3b94faa DT |
212 | ef.ef_el = el; |
213 | ||
214 | memset(el, 0, sizeof(struct gfs2_ea_location)); | |
215 | ||
216 | error = ea_foreach(ip, ea_find_i, &ef); | |
217 | if (error > 0) | |
218 | return 0; | |
219 | ||
220 | return error; | |
221 | } | |
222 | ||
c551f66c LJ |
223 | /* |
224 | * ea_dealloc_unstuffed | |
b3b94faa DT |
225 | * |
226 | * Take advantage of the fact that all unstuffed blocks are | |
227 | * allocated from the same RG. But watch, this may not always | |
228 | * be true. | |
229 | * | |
230 | * Returns: errno | |
231 | */ | |
232 | ||
233 | static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, | |
234 | struct gfs2_ea_header *ea, | |
235 | struct gfs2_ea_header *prev, void *private) | |
236 | { | |
237 | int *leave = private; | |
feaa7bba | 238 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
239 | struct gfs2_rgrpd *rgd; |
240 | struct gfs2_holder rg_gh; | |
b44b84d7 AV |
241 | __be64 *dataptrs; |
242 | u64 bn = 0; | |
cd915493 | 243 | u64 bstart = 0; |
b3b94faa DT |
244 | unsigned int blen = 0; |
245 | unsigned int blks = 0; | |
246 | unsigned int x; | |
247 | int error; | |
248 | ||
5e2f7d61 BP |
249 | error = gfs2_rindex_update(sdp); |
250 | if (error) | |
251 | return error; | |
252 | ||
b3b94faa DT |
253 | if (GFS2_EA_IS_STUFFED(ea)) |
254 | return 0; | |
255 | ||
256 | dataptrs = GFS2_EA2DATAPTRS(ea); | |
cca195c5 | 257 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { |
b3b94faa DT |
258 | if (*dataptrs) { |
259 | blks++; | |
260 | bn = be64_to_cpu(*dataptrs); | |
261 | } | |
cca195c5 | 262 | } |
b3b94faa DT |
263 | if (!blks) |
264 | return 0; | |
265 | ||
66fc061b | 266 | rgd = gfs2_blk2rgrpd(sdp, bn, 1); |
b3b94faa DT |
267 | if (!rgd) { |
268 | gfs2_consist_inode(ip); | |
269 | return -EIO; | |
270 | } | |
271 | ||
4fc7ec31 BP |
272 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, |
273 | LM_FLAG_NODE_SCOPE, &rg_gh); | |
b3b94faa DT |
274 | if (error) |
275 | return error; | |
276 | ||
bb8d8a6f | 277 | error = gfs2_trans_begin(sdp, rgd->rd_length + RES_DINODE + |
cca195c5 | 278 | RES_EATTR + RES_STATFS + RES_QUOTA, blks); |
b3b94faa DT |
279 | if (error) |
280 | goto out_gunlock; | |
281 | ||
350a9b0a | 282 | gfs2_trans_add_meta(ip->i_gl, bh); |
b3b94faa DT |
283 | |
284 | dataptrs = GFS2_EA2DATAPTRS(ea); | |
285 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { | |
286 | if (!*dataptrs) | |
287 | break; | |
288 | bn = be64_to_cpu(*dataptrs); | |
289 | ||
290 | if (bstart + blen == bn) | |
291 | blen++; | |
292 | else { | |
293 | if (bstart) | |
0ddeded4 | 294 | gfs2_free_meta(ip, rgd, bstart, blen); |
b3b94faa DT |
295 | bstart = bn; |
296 | blen = 1; | |
297 | } | |
298 | ||
299 | *dataptrs = 0; | |
77658aad | 300 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
301 | } |
302 | if (bstart) | |
0ddeded4 | 303 | gfs2_free_meta(ip, rgd, bstart, blen); |
b3b94faa DT |
304 | |
305 | if (prev && !leave) { | |
cd915493 | 306 | u32 len; |
b3b94faa DT |
307 | |
308 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
309 | prev->ea_rec_len = cpu_to_be32(len); | |
310 | ||
311 | if (GFS2_EA_IS_LAST(ea)) | |
312 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
313 | } else { | |
314 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
315 | ea->ea_num_ptrs = 0; | |
316 | } | |
317 | ||
8a8b8d91 | 318 | inode_set_ctime_current(&ip->i_inode); |
937d3305 | 319 | __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); |
b3b94faa DT |
320 | |
321 | gfs2_trans_end(sdp); | |
322 | ||
a91ea69f | 323 | out_gunlock: |
b3b94faa | 324 | gfs2_glock_dq_uninit(&rg_gh); |
b3b94faa DT |
325 | return error; |
326 | } | |
327 | ||
328 | static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, | |
329 | struct gfs2_ea_header *ea, | |
330 | struct gfs2_ea_header *prev, int leave) | |
331 | { | |
b3b94faa DT |
332 | int error; |
333 | ||
8e2e0047 BP |
334 | error = gfs2_rindex_update(GFS2_SB(&ip->i_inode)); |
335 | if (error) | |
336 | return error; | |
337 | ||
f4108a60 | 338 | error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); |
b3b94faa DT |
339 | if (error) |
340 | goto out_alloc; | |
341 | ||
cca195c5 | 342 | error = ea_dealloc_unstuffed(ip, bh, ea, prev, (leave) ? &error : NULL); |
b3b94faa | 343 | |
b3b94faa | 344 | gfs2_quota_unhold(ip); |
a91ea69f | 345 | out_alloc: |
b3b94faa DT |
346 | return error; |
347 | } | |
348 | ||
b3b94faa DT |
349 | struct ea_list { |
350 | struct gfs2_ea_request *ei_er; | |
351 | unsigned int ei_size; | |
352 | }; | |
353 | ||
354 | static int ea_list_i(struct gfs2_inode *ip, struct buffer_head *bh, | |
355 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
356 | void *private) | |
357 | { | |
866eef48 | 358 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
359 | struct ea_list *ei = private; |
360 | struct gfs2_ea_request *er = ei->ei_er; | |
21e2156f AG |
361 | unsigned int ea_size; |
362 | char *prefix; | |
363 | unsigned int l; | |
b3b94faa DT |
364 | |
365 | if (ea->ea_type == GFS2_EATYPE_UNUSED) | |
366 | return 0; | |
367 | ||
866eef48 AG |
368 | BUG_ON(ea->ea_type > GFS2_EATYPE_SECURITY && |
369 | sdp->sd_sb.sb_fs_format == GFS2_FS_FORMAT_MIN); | |
21e2156f AG |
370 | switch (ea->ea_type) { |
371 | case GFS2_EATYPE_USR: | |
372 | prefix = "user."; | |
373 | l = 5; | |
374 | break; | |
375 | case GFS2_EATYPE_SYS: | |
376 | prefix = "system."; | |
377 | l = 7; | |
378 | break; | |
379 | case GFS2_EATYPE_SECURITY: | |
380 | prefix = "security."; | |
381 | l = 9; | |
382 | break; | |
866eef48 AG |
383 | case GFS2_EATYPE_TRUSTED: |
384 | prefix = "trusted."; | |
385 | l = 8; | |
386 | break; | |
21e2156f | 387 | default: |
866eef48 | 388 | return 0; |
21e2156f | 389 | } |
b3b94faa | 390 | |
21e2156f AG |
391 | ea_size = l + ea->ea_name_len + 1; |
392 | if (er->er_data_len) { | |
b3b94faa DT |
393 | if (ei->ei_size + ea_size > er->er_data_len) |
394 | return -ERANGE; | |
395 | ||
90cdd208 SW |
396 | memcpy(er->er_data + ei->ei_size, prefix, l); |
397 | memcpy(er->er_data + ei->ei_size + l, GFS2_EA2NAME(ea), | |
b3b94faa | 398 | ea->ea_name_len); |
21e2156f | 399 | er->er_data[ei->ei_size + ea_size - 1] = 0; |
b3b94faa DT |
400 | } |
401 | ||
402 | ei->ei_size += ea_size; | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
407 | /** | |
40b78a32 SW |
408 | * gfs2_listxattr - List gfs2 extended attributes |
409 | * @dentry: The dentry whose inode we are interested in | |
410 | * @buffer: The buffer to write the results | |
411 | * @size: The size of the buffer | |
b3b94faa DT |
412 | * |
413 | * Returns: actual size of data on success, -errno on error | |
414 | */ | |
415 | ||
40b78a32 | 416 | ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) |
b3b94faa | 417 | { |
2b0143b5 | 418 | struct gfs2_inode *ip = GFS2_I(d_inode(dentry)); |
40b78a32 | 419 | struct gfs2_ea_request er; |
b3b94faa DT |
420 | struct gfs2_holder i_gh; |
421 | int error; | |
422 | ||
40b78a32 SW |
423 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
424 | if (size) { | |
425 | er.er_data = buffer; | |
426 | er.er_data_len = size; | |
b3b94faa DT |
427 | } |
428 | ||
cca195c5 | 429 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); |
b3b94faa DT |
430 | if (error) |
431 | return error; | |
432 | ||
3767ac21 | 433 | if (ip->i_eattr) { |
40b78a32 | 434 | struct ea_list ei = { .ei_er = &er, .ei_size = 0 }; |
b3b94faa DT |
435 | |
436 | error = ea_foreach(ip, ea_list_i, &ei); | |
437 | if (!error) | |
438 | error = ei.ei_size; | |
439 | } | |
440 | ||
441 | gfs2_glock_dq_uninit(&i_gh); | |
442 | ||
443 | return error; | |
444 | } | |
445 | ||
446 | /** | |
c551f66c LJ |
447 | * gfs2_iter_unstuffed - copies the unstuffed xattr data to/from the |
448 | * request buffer | |
cca195c5 SW |
449 | * @ip: The GFS2 inode |
450 | * @ea: The extended attribute header structure | |
1f981697 SW |
451 | * @din: The data to be copied in |
452 | * @dout: The data to be copied out (one of din,dout will be NULL) | |
b3b94faa DT |
453 | * |
454 | * Returns: errno | |
455 | */ | |
456 | ||
1f981697 SW |
457 | static int gfs2_iter_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea, |
458 | const char *din, char *dout) | |
b3b94faa | 459 | { |
feaa7bba | 460 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
461 | struct buffer_head **bh; |
462 | unsigned int amount = GFS2_EA_DATA_LEN(ea); | |
5c676f6d | 463 | unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); |
b44b84d7 | 464 | __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
465 | unsigned int x; |
466 | int error = 0; | |
1f981697 SW |
467 | unsigned char *pos; |
468 | unsigned cp_size; | |
b3b94faa | 469 | |
16c5f06f | 470 | bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); |
b3b94faa DT |
471 | if (!bh) |
472 | return -ENOMEM; | |
473 | ||
474 | for (x = 0; x < nptrs; x++) { | |
c8d57703 | 475 | error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, 0, |
7276b3b0 | 476 | bh + x); |
b3b94faa DT |
477 | if (error) { |
478 | while (x--) | |
479 | brelse(bh[x]); | |
480 | goto out; | |
481 | } | |
482 | dataptrs++; | |
483 | } | |
484 | ||
485 | for (x = 0; x < nptrs; x++) { | |
7276b3b0 | 486 | error = gfs2_meta_wait(sdp, bh[x]); |
b3b94faa DT |
487 | if (error) { |
488 | for (; x < nptrs; x++) | |
489 | brelse(bh[x]); | |
490 | goto out; | |
491 | } | |
492 | if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) { | |
493 | for (; x < nptrs; x++) | |
494 | brelse(bh[x]); | |
495 | error = -EIO; | |
496 | goto out; | |
497 | } | |
498 | ||
1f981697 SW |
499 | pos = bh[x]->b_data + sizeof(struct gfs2_meta_header); |
500 | cp_size = (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize; | |
b3b94faa | 501 | |
1f981697 SW |
502 | if (dout) { |
503 | memcpy(dout, pos, cp_size); | |
504 | dout += sdp->sd_jbsize; | |
505 | } | |
506 | ||
507 | if (din) { | |
350a9b0a | 508 | gfs2_trans_add_meta(ip->i_gl, bh[x]); |
1f981697 SW |
509 | memcpy(pos, din, cp_size); |
510 | din += sdp->sd_jbsize; | |
511 | } | |
b3b94faa | 512 | |
1f981697 | 513 | amount -= sdp->sd_jbsize; |
b3b94faa DT |
514 | brelse(bh[x]); |
515 | } | |
516 | ||
a91ea69f | 517 | out: |
b3b94faa | 518 | kfree(bh); |
b3b94faa DT |
519 | return error; |
520 | } | |
521 | ||
479c427d SW |
522 | static int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el, |
523 | char *data, size_t size) | |
b3b94faa | 524 | { |
40b78a32 SW |
525 | int ret; |
526 | size_t len = GFS2_EA_DATA_LEN(el->el_ea); | |
527 | if (len > size) | |
528 | return -ERANGE; | |
529 | ||
b3b94faa | 530 | if (GFS2_EA_IS_STUFFED(el->el_ea)) { |
40b78a32 SW |
531 | memcpy(data, GFS2_EA2DATA(el->el_ea), len); |
532 | return len; | |
533 | } | |
1f981697 | 534 | ret = gfs2_iter_unstuffed(ip, el->el_ea, NULL, data); |
40b78a32 SW |
535 | if (ret < 0) |
536 | return ret; | |
537 | return len; | |
b3b94faa DT |
538 | } |
539 | ||
479c427d SW |
540 | int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **ppdata) |
541 | { | |
542 | struct gfs2_ea_location el; | |
543 | int error; | |
544 | int len; | |
545 | char *data; | |
546 | ||
547 | error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, name, &el); | |
548 | if (error) | |
549 | return error; | |
550 | if (!el.el_ea) | |
551 | goto out; | |
552 | if (!GFS2_EA_DATA_LEN(el.el_ea)) | |
553 | goto out; | |
554 | ||
555 | len = GFS2_EA_DATA_LEN(el.el_ea); | |
556 | data = kmalloc(len, GFP_NOFS); | |
557 | error = -ENOMEM; | |
558 | if (data == NULL) | |
559 | goto out; | |
560 | ||
561 | error = gfs2_ea_get_copy(ip, &el, data, len); | |
114b80ce SW |
562 | if (error < 0) |
563 | kfree(data); | |
564 | else | |
565 | *ppdata = data; | |
479c427d SW |
566 | out: |
567 | brelse(el.el_bh); | |
568 | return error; | |
569 | } | |
570 | ||
b3b94faa | 571 | /** |
c551f66c | 572 | * __gfs2_xattr_get - Get a GFS2 extended attribute |
40b78a32 | 573 | * @inode: The inode |
40b78a32 SW |
574 | * @name: The name of the extended attribute |
575 | * @buffer: The buffer to write the result into | |
576 | * @size: The size of the buffer | |
431547b3 | 577 | * @type: The type of extended attribute |
b3b94faa DT |
578 | * |
579 | * Returns: actual size of data on success, -errno on error | |
580 | */ | |
1a39ba99 AV |
581 | static int __gfs2_xattr_get(struct inode *inode, const char *name, |
582 | void *buffer, size_t size, int type) | |
b3b94faa | 583 | { |
b296821a | 584 | struct gfs2_inode *ip = GFS2_I(inode); |
b3b94faa DT |
585 | struct gfs2_ea_location el; |
586 | int error; | |
587 | ||
3767ac21 | 588 | if (!ip->i_eattr) |
b3b94faa | 589 | return -ENODATA; |
40b78a32 SW |
590 | if (strlen(name) > GFS2_EA_MAX_NAME_LEN) |
591 | return -EINVAL; | |
b3b94faa | 592 | |
40b78a32 | 593 | error = gfs2_ea_find(ip, type, name, &el); |
b3b94faa DT |
594 | if (error) |
595 | return error; | |
596 | if (!el.el_ea) | |
597 | return -ENODATA; | |
86d00636 | 598 | if (size) |
40b78a32 SW |
599 | error = gfs2_ea_get_copy(ip, &el, buffer, size); |
600 | else | |
b3b94faa | 601 | error = GFS2_EA_DATA_LEN(el.el_ea); |
b3b94faa DT |
602 | brelse(el.el_bh); |
603 | ||
604 | return error; | |
605 | } | |
606 | ||
1a39ba99 AV |
607 | static int gfs2_xattr_get(const struct xattr_handler *handler, |
608 | struct dentry *unused, struct inode *inode, | |
609 | const char *name, void *buffer, size_t size) | |
610 | { | |
611 | struct gfs2_inode *ip = GFS2_I(inode); | |
612 | struct gfs2_holder gh; | |
1a39ba99 AV |
613 | int ret; |
614 | ||
615 | /* During lookup, SELinux calls this function with the glock locked. */ | |
616 | ||
617 | if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { | |
618 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); | |
619 | if (ret) | |
620 | return ret; | |
d0920a9c AG |
621 | } else { |
622 | gfs2_holder_mark_uninitialized(&gh); | |
1a39ba99 AV |
623 | } |
624 | ret = __gfs2_xattr_get(inode, name, buffer, size, handler->flags); | |
d0920a9c | 625 | if (gfs2_holder_initialized(&gh)) |
1a39ba99 AV |
626 | gfs2_glock_dq_uninit(&gh); |
627 | return ret; | |
628 | } | |
629 | ||
b3b94faa DT |
630 | /** |
631 | * ea_alloc_blk - allocates a new block for extended attributes. | |
632 | * @ip: A pointer to the inode that's getting extended attributes | |
cca195c5 | 633 | * @bhp: Pointer to pointer to a struct buffer_head |
b3b94faa DT |
634 | * |
635 | * Returns: errno | |
636 | */ | |
637 | ||
638 | static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp) | |
639 | { | |
feaa7bba | 640 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa | 641 | struct gfs2_ea_header *ea; |
b45e41d7 | 642 | unsigned int n = 1; |
cd915493 | 643 | u64 block; |
09010978 | 644 | int error; |
b3b94faa | 645 | |
4c7b3f7f | 646 | error = gfs2_alloc_blocks(ip, &block, &n, 0); |
09010978 SW |
647 | if (error) |
648 | return error; | |
fbb27873 | 649 | gfs2_trans_remove_revoke(sdp, block, 1); |
b3b94faa | 650 | *bhp = gfs2_meta_new(ip->i_gl, block); |
350a9b0a | 651 | gfs2_trans_add_meta(ip->i_gl, *bhp); |
b3b94faa DT |
652 | gfs2_metatype_set(*bhp, GFS2_METATYPE_EA, GFS2_FORMAT_EA); |
653 | gfs2_buffer_clear_tail(*bhp, sizeof(struct gfs2_meta_header)); | |
654 | ||
655 | ea = GFS2_EA_BH2FIRST(*bhp); | |
656 | ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); | |
657 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
658 | ea->ea_flags = GFS2_EAFLAG_LAST; | |
659 | ea->ea_num_ptrs = 0; | |
660 | ||
77658aad | 661 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa DT |
662 | |
663 | return 0; | |
664 | } | |
665 | ||
666 | /** | |
667 | * ea_write - writes the request info to an ea, creating new blocks if | |
668 | * necessary | |
cca195c5 SW |
669 | * @ip: inode that is being modified |
670 | * @ea: the location of the new ea in a block | |
b3b94faa DT |
671 | * @er: the write request |
672 | * | |
673 | * Note: does not update ea_rec_len or the GFS2_EAFLAG_LAST bin of ea_flags | |
674 | * | |
675 | * returns : errno | |
676 | */ | |
677 | ||
678 | static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea, | |
679 | struct gfs2_ea_request *er) | |
680 | { | |
feaa7bba | 681 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
09010978 | 682 | int error; |
b3b94faa DT |
683 | |
684 | ea->ea_data_len = cpu_to_be32(er->er_data_len); | |
685 | ea->ea_name_len = er->er_name_len; | |
686 | ea->ea_type = er->er_type; | |
687 | ea->__pad = 0; | |
688 | ||
689 | memcpy(GFS2_EA2NAME(ea), er->er_name, er->er_name_len); | |
690 | ||
691 | if (GFS2_EAREQ_SIZE_STUFFED(er) <= sdp->sd_jbsize) { | |
692 | ea->ea_num_ptrs = 0; | |
693 | memcpy(GFS2_EA2DATA(ea), er->er_data, er->er_data_len); | |
694 | } else { | |
b44b84d7 | 695 | __be64 *dataptr = GFS2_EA2DATAPTRS(ea); |
b3b94faa DT |
696 | const char *data = er->er_data; |
697 | unsigned int data_len = er->er_data_len; | |
698 | unsigned int copy; | |
699 | unsigned int x; | |
700 | ||
5c676f6d | 701 | ea->ea_num_ptrs = DIV_ROUND_UP(er->er_data_len, sdp->sd_jbsize); |
b3b94faa DT |
702 | for (x = 0; x < ea->ea_num_ptrs; x++) { |
703 | struct buffer_head *bh; | |
cd915493 | 704 | u64 block; |
b3b94faa | 705 | int mh_size = sizeof(struct gfs2_meta_header); |
b45e41d7 | 706 | unsigned int n = 1; |
b3b94faa | 707 | |
4c7b3f7f | 708 | error = gfs2_alloc_blocks(ip, &block, &n, 0); |
09010978 SW |
709 | if (error) |
710 | return error; | |
fbb27873 | 711 | gfs2_trans_remove_revoke(sdp, block, 1); |
b3b94faa | 712 | bh = gfs2_meta_new(ip->i_gl, block); |
350a9b0a | 713 | gfs2_trans_add_meta(ip->i_gl, bh); |
b3b94faa DT |
714 | gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED); |
715 | ||
77658aad | 716 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa | 717 | |
cca195c5 SW |
718 | copy = data_len > sdp->sd_jbsize ? sdp->sd_jbsize : |
719 | data_len; | |
b3b94faa DT |
720 | memcpy(bh->b_data + mh_size, data, copy); |
721 | if (copy < sdp->sd_jbsize) | |
722 | memset(bh->b_data + mh_size + copy, 0, | |
723 | sdp->sd_jbsize - copy); | |
724 | ||
cca195c5 | 725 | *dataptr++ = cpu_to_be64(bh->b_blocknr); |
b3b94faa DT |
726 | data += copy; |
727 | data_len -= copy; | |
728 | ||
729 | brelse(bh); | |
730 | } | |
731 | ||
732 | gfs2_assert_withdraw(sdp, !data_len); | |
733 | } | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | typedef int (*ea_skeleton_call_t) (struct gfs2_inode *ip, | |
cca195c5 | 739 | struct gfs2_ea_request *er, void *private); |
b3b94faa DT |
740 | |
741 | static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
742 | unsigned int blks, | |
cca195c5 | 743 | ea_skeleton_call_t skeleton_call, void *private) |
b3b94faa | 744 | { |
7b9cff46 | 745 | struct gfs2_alloc_parms ap = { .target = blks }; |
b3b94faa DT |
746 | int error; |
747 | ||
8e2e0047 BP |
748 | error = gfs2_rindex_update(GFS2_SB(&ip->i_inode)); |
749 | if (error) | |
750 | return error; | |
751 | ||
b8fbf471 | 752 | error = gfs2_quota_lock_check(ip, &ap); |
b3b94faa | 753 | if (error) |
5407e242 | 754 | return error; |
b3b94faa | 755 | |
7b9cff46 | 756 | error = gfs2_inplace_reserve(ip, &ap); |
b3b94faa DT |
757 | if (error) |
758 | goto out_gunlock_q; | |
759 | ||
feaa7bba | 760 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), |
71f890f7 | 761 | blks + gfs2_rg_blocks(ip, blks) + |
b3b94faa DT |
762 | RES_DINODE + RES_STATFS + RES_QUOTA, 0); |
763 | if (error) | |
764 | goto out_ipres; | |
765 | ||
766 | error = skeleton_call(ip, er, private); | |
767 | if (error) | |
768 | goto out_end_trans; | |
769 | ||
8a8b8d91 | 770 | inode_set_ctime_current(&ip->i_inode); |
937d3305 | 771 | __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); |
b3b94faa | 772 | |
a91ea69f | 773 | out_end_trans: |
feaa7bba | 774 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
a91ea69f | 775 | out_ipres: |
b3b94faa | 776 | gfs2_inplace_release(ip); |
a91ea69f | 777 | out_gunlock_q: |
b3b94faa | 778 | gfs2_quota_unlock(ip); |
b3b94faa DT |
779 | return error; |
780 | } | |
781 | ||
782 | static int ea_init_i(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
783 | void *private) | |
784 | { | |
785 | struct buffer_head *bh; | |
786 | int error; | |
787 | ||
788 | error = ea_alloc_blk(ip, &bh); | |
789 | if (error) | |
790 | return error; | |
791 | ||
3767ac21 | 792 | ip->i_eattr = bh->b_blocknr; |
b3b94faa DT |
793 | error = ea_write(ip, GFS2_EA_BH2FIRST(bh), er); |
794 | ||
795 | brelse(bh); | |
796 | ||
797 | return error; | |
798 | } | |
799 | ||
c551f66c | 800 | /* |
b3b94faa | 801 | * ea_init - initializes a new eattr block |
b3b94faa DT |
802 | * |
803 | * Returns: errno | |
804 | */ | |
40b78a32 SW |
805 | static int ea_init(struct gfs2_inode *ip, int type, const char *name, |
806 | const void *data, size_t size) | |
b3b94faa | 807 | { |
40b78a32 | 808 | struct gfs2_ea_request er; |
feaa7bba | 809 | unsigned int jbsize = GFS2_SB(&ip->i_inode)->sd_jbsize; |
b3b94faa DT |
810 | unsigned int blks = 1; |
811 | ||
40b78a32 SW |
812 | er.er_type = type; |
813 | er.er_name = name; | |
814 | er.er_name_len = strlen(name); | |
815 | er.er_data = (void *)data; | |
816 | er.er_data_len = size; | |
817 | ||
818 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > jbsize) | |
819 | blks += DIV_ROUND_UP(er.er_data_len, jbsize); | |
b3b94faa | 820 | |
40b78a32 | 821 | return ea_alloc_skeleton(ip, &er, blks, ea_init_i, NULL); |
b3b94faa DT |
822 | } |
823 | ||
824 | static struct gfs2_ea_header *ea_split_ea(struct gfs2_ea_header *ea) | |
825 | { | |
cd915493 | 826 | u32 ea_size = GFS2_EA_SIZE(ea); |
568f4c96 SW |
827 | struct gfs2_ea_header *new = (struct gfs2_ea_header *)((char *)ea + |
828 | ea_size); | |
cd915493 | 829 | u32 new_size = GFS2_EA_REC_LEN(ea) - ea_size; |
b3b94faa DT |
830 | int last = ea->ea_flags & GFS2_EAFLAG_LAST; |
831 | ||
832 | ea->ea_rec_len = cpu_to_be32(ea_size); | |
833 | ea->ea_flags ^= last; | |
834 | ||
835 | new->ea_rec_len = cpu_to_be32(new_size); | |
836 | new->ea_flags = last; | |
837 | ||
838 | return new; | |
839 | } | |
840 | ||
841 | static void ea_set_remove_stuffed(struct gfs2_inode *ip, | |
842 | struct gfs2_ea_location *el) | |
843 | { | |
844 | struct gfs2_ea_header *ea = el->el_ea; | |
845 | struct gfs2_ea_header *prev = el->el_prev; | |
cd915493 | 846 | u32 len; |
b3b94faa | 847 | |
350a9b0a | 848 | gfs2_trans_add_meta(ip->i_gl, el->el_bh); |
b3b94faa DT |
849 | |
850 | if (!prev || !GFS2_EA_IS_STUFFED(ea)) { | |
851 | ea->ea_type = GFS2_EATYPE_UNUSED; | |
852 | return; | |
853 | } else if (GFS2_EA2NEXT(prev) != ea) { | |
854 | prev = GFS2_EA2NEXT(prev); | |
feaa7bba | 855 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), GFS2_EA2NEXT(prev) == ea); |
b3b94faa DT |
856 | } |
857 | ||
858 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
859 | prev->ea_rec_len = cpu_to_be32(len); | |
860 | ||
861 | if (GFS2_EA_IS_LAST(ea)) | |
862 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
863 | } | |
864 | ||
865 | struct ea_set { | |
866 | int ea_split; | |
867 | ||
868 | struct gfs2_ea_request *es_er; | |
869 | struct gfs2_ea_location *es_el; | |
870 | ||
871 | struct buffer_head *es_bh; | |
872 | struct gfs2_ea_header *es_ea; | |
873 | }; | |
874 | ||
875 | static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, | |
876 | struct gfs2_ea_header *ea, struct ea_set *es) | |
877 | { | |
878 | struct gfs2_ea_request *er = es->es_er; | |
b3b94faa DT |
879 | int error; |
880 | ||
feaa7bba | 881 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + 2 * RES_EATTR, 0); |
b3b94faa DT |
882 | if (error) |
883 | return error; | |
884 | ||
350a9b0a | 885 | gfs2_trans_add_meta(ip->i_gl, bh); |
b3b94faa DT |
886 | |
887 | if (es->ea_split) | |
888 | ea = ea_split_ea(ea); | |
889 | ||
890 | ea_write(ip, ea, er); | |
891 | ||
892 | if (es->es_el) | |
893 | ea_set_remove_stuffed(ip, es->es_el); | |
894 | ||
8a8b8d91 | 895 | inode_set_ctime_current(&ip->i_inode); |
937d3305 | 896 | __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); |
6862c44e | 897 | |
feaa7bba | 898 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
899 | return error; |
900 | } | |
901 | ||
902 | static int ea_set_simple_alloc(struct gfs2_inode *ip, | |
903 | struct gfs2_ea_request *er, void *private) | |
904 | { | |
905 | struct ea_set *es = private; | |
906 | struct gfs2_ea_header *ea = es->es_ea; | |
907 | int error; | |
908 | ||
350a9b0a | 909 | gfs2_trans_add_meta(ip->i_gl, es->es_bh); |
b3b94faa DT |
910 | |
911 | if (es->ea_split) | |
912 | ea = ea_split_ea(ea); | |
913 | ||
914 | error = ea_write(ip, ea, er); | |
915 | if (error) | |
916 | return error; | |
917 | ||
918 | if (es->es_el) | |
919 | ea_set_remove_stuffed(ip, es->es_el); | |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
924 | static int ea_set_simple(struct gfs2_inode *ip, struct buffer_head *bh, | |
925 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, | |
926 | void *private) | |
927 | { | |
928 | struct ea_set *es = private; | |
929 | unsigned int size; | |
930 | int stuffed; | |
931 | int error; | |
932 | ||
40b78a32 SW |
933 | stuffed = ea_calc_size(GFS2_SB(&ip->i_inode), es->es_er->er_name_len, |
934 | es->es_er->er_data_len, &size); | |
b3b94faa DT |
935 | |
936 | if (ea->ea_type == GFS2_EATYPE_UNUSED) { | |
937 | if (GFS2_EA_REC_LEN(ea) < size) | |
938 | return 0; | |
939 | if (!GFS2_EA_IS_STUFFED(ea)) { | |
940 | error = ea_remove_unstuffed(ip, bh, ea, prev, 1); | |
941 | if (error) | |
942 | return error; | |
943 | } | |
944 | es->ea_split = 0; | |
945 | } else if (GFS2_EA_REC_LEN(ea) - GFS2_EA_SIZE(ea) >= size) | |
946 | es->ea_split = 1; | |
947 | else | |
948 | return 0; | |
949 | ||
950 | if (stuffed) { | |
951 | error = ea_set_simple_noalloc(ip, bh, ea, es); | |
952 | if (error) | |
953 | return error; | |
954 | } else { | |
955 | unsigned int blks; | |
956 | ||
957 | es->es_bh = bh; | |
958 | es->es_ea = ea; | |
5c676f6d | 959 | blks = 2 + DIV_ROUND_UP(es->es_er->er_data_len, |
feaa7bba | 960 | GFS2_SB(&ip->i_inode)->sd_jbsize); |
b3b94faa DT |
961 | |
962 | error = ea_alloc_skeleton(ip, es->es_er, blks, | |
963 | ea_set_simple_alloc, es); | |
964 | if (error) | |
965 | return error; | |
966 | } | |
967 | ||
968 | return 1; | |
969 | } | |
970 | ||
971 | static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, | |
972 | void *private) | |
973 | { | |
feaa7bba | 974 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa | 975 | struct buffer_head *indbh, *newbh; |
b44b84d7 | 976 | __be64 *eablk; |
b3b94faa DT |
977 | int error; |
978 | int mh_size = sizeof(struct gfs2_meta_header); | |
979 | ||
383f01fb | 980 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { |
b44b84d7 | 981 | __be64 *end; |
b3b94faa | 982 | |
c8d57703 | 983 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, 0, |
7276b3b0 | 984 | &indbh); |
b3b94faa DT |
985 | if (error) |
986 | return error; | |
987 | ||
988 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { | |
989 | error = -EIO; | |
990 | goto out; | |
991 | } | |
992 | ||
b44b84d7 | 993 | eablk = (__be64 *)(indbh->b_data + mh_size); |
b3b94faa DT |
994 | end = eablk + sdp->sd_inptrs; |
995 | ||
996 | for (; eablk < end; eablk++) | |
997 | if (!*eablk) | |
998 | break; | |
999 | ||
1000 | if (eablk == end) { | |
1001 | error = -ENOSPC; | |
1002 | goto out; | |
1003 | } | |
1004 | ||
350a9b0a | 1005 | gfs2_trans_add_meta(ip->i_gl, indbh); |
b3b94faa | 1006 | } else { |
cd915493 | 1007 | u64 blk; |
b45e41d7 | 1008 | unsigned int n = 1; |
4c7b3f7f | 1009 | error = gfs2_alloc_blocks(ip, &blk, &n, 0); |
09010978 SW |
1010 | if (error) |
1011 | return error; | |
fbb27873 | 1012 | gfs2_trans_remove_revoke(sdp, blk, 1); |
b3b94faa | 1013 | indbh = gfs2_meta_new(ip->i_gl, blk); |
350a9b0a | 1014 | gfs2_trans_add_meta(ip->i_gl, indbh); |
b3b94faa DT |
1015 | gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN); |
1016 | gfs2_buffer_clear_tail(indbh, mh_size); | |
1017 | ||
b44b84d7 | 1018 | eablk = (__be64 *)(indbh->b_data + mh_size); |
3767ac21 SW |
1019 | *eablk = cpu_to_be64(ip->i_eattr); |
1020 | ip->i_eattr = blk; | |
383f01fb | 1021 | ip->i_diskflags |= GFS2_DIF_EA_INDIRECT; |
77658aad | 1022 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
b3b94faa DT |
1023 | |
1024 | eablk++; | |
1025 | } | |
1026 | ||
1027 | error = ea_alloc_blk(ip, &newbh); | |
1028 | if (error) | |
1029 | goto out; | |
1030 | ||
cd915493 | 1031 | *eablk = cpu_to_be64((u64)newbh->b_blocknr); |
b3b94faa DT |
1032 | error = ea_write(ip, GFS2_EA_BH2FIRST(newbh), er); |
1033 | brelse(newbh); | |
1034 | if (error) | |
1035 | goto out; | |
1036 | ||
1037 | if (private) | |
cca195c5 | 1038 | ea_set_remove_stuffed(ip, private); |
b3b94faa | 1039 | |
a91ea69f | 1040 | out: |
b3b94faa | 1041 | brelse(indbh); |
b3b94faa DT |
1042 | return error; |
1043 | } | |
1044 | ||
40b78a32 SW |
1045 | static int ea_set_i(struct gfs2_inode *ip, int type, const char *name, |
1046 | const void *value, size_t size, struct gfs2_ea_location *el) | |
b3b94faa | 1047 | { |
40b78a32 | 1048 | struct gfs2_ea_request er; |
b3b94faa DT |
1049 | struct ea_set es; |
1050 | unsigned int blks = 2; | |
1051 | int error; | |
1052 | ||
40b78a32 SW |
1053 | er.er_type = type; |
1054 | er.er_name = name; | |
1055 | er.er_data = (void *)value; | |
1056 | er.er_name_len = strlen(name); | |
1057 | er.er_data_len = size; | |
1058 | ||
b3b94faa | 1059 | memset(&es, 0, sizeof(struct ea_set)); |
40b78a32 | 1060 | es.es_er = &er; |
b3b94faa DT |
1061 | es.es_el = el; |
1062 | ||
1063 | error = ea_foreach(ip, ea_set_simple, &es); | |
1064 | if (error > 0) | |
1065 | return 0; | |
1066 | if (error) | |
1067 | return error; | |
1068 | ||
383f01fb | 1069 | if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) |
b3b94faa | 1070 | blks++; |
40b78a32 SW |
1071 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > GFS2_SB(&ip->i_inode)->sd_jbsize) |
1072 | blks += DIV_ROUND_UP(er.er_data_len, GFS2_SB(&ip->i_inode)->sd_jbsize); | |
b3b94faa | 1073 | |
40b78a32 | 1074 | return ea_alloc_skeleton(ip, &er, blks, ea_set_block, el); |
b3b94faa DT |
1075 | } |
1076 | ||
1077 | static int ea_set_remove_unstuffed(struct gfs2_inode *ip, | |
1078 | struct gfs2_ea_location *el) | |
1079 | { | |
1080 | if (el->el_prev && GFS2_EA2NEXT(el->el_prev) != el->el_ea) { | |
1081 | el->el_prev = GFS2_EA2NEXT(el->el_prev); | |
feaa7bba | 1082 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), |
b3b94faa DT |
1083 | GFS2_EA2NEXT(el->el_prev) == el->el_ea); |
1084 | } | |
1085 | ||
86d00636 | 1086 | return ea_remove_unstuffed(ip, el->el_bh, el->el_ea, el->el_prev, 0); |
b3b94faa DT |
1087 | } |
1088 | ||
b3b94faa DT |
1089 | static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el) |
1090 | { | |
1091 | struct gfs2_ea_header *ea = el->el_ea; | |
1092 | struct gfs2_ea_header *prev = el->el_prev; | |
b3b94faa DT |
1093 | int error; |
1094 | ||
feaa7bba | 1095 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0); |
b3b94faa DT |
1096 | if (error) |
1097 | return error; | |
1098 | ||
350a9b0a | 1099 | gfs2_trans_add_meta(ip->i_gl, el->el_bh); |
b3b94faa DT |
1100 | |
1101 | if (prev) { | |
cd915493 | 1102 | u32 len; |
b3b94faa DT |
1103 | |
1104 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); | |
1105 | prev->ea_rec_len = cpu_to_be32(len); | |
1106 | ||
1107 | if (GFS2_EA_IS_LAST(ea)) | |
1108 | prev->ea_flags |= GFS2_EAFLAG_LAST; | |
40b78a32 | 1109 | } else { |
b3b94faa | 1110 | ea->ea_type = GFS2_EATYPE_UNUSED; |
40b78a32 | 1111 | } |
b3b94faa | 1112 | |
8a8b8d91 | 1113 | inode_set_ctime_current(&ip->i_inode); |
937d3305 | 1114 | __mark_inode_dirty(&ip->i_inode, I_DIRTY_DATASYNC); |
b3b94faa | 1115 | |
feaa7bba | 1116 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
b3b94faa DT |
1117 | |
1118 | return error; | |
1119 | } | |
1120 | ||
40b78a32 SW |
1121 | /** |
1122 | * gfs2_xattr_remove - Remove a GFS2 extended attribute | |
431547b3 | 1123 | * @ip: The inode |
40b78a32 SW |
1124 | * @type: The type of the extended attribute |
1125 | * @name: The name of the extended attribute | |
1126 | * | |
1127 | * This is not called directly by the VFS since we use the (common) | |
1128 | * scheme of making a "set with NULL data" mean a remove request. Note | |
1129 | * that this is different from a set with zero length data. | |
1130 | * | |
1131 | * Returns: 0, or errno on failure | |
1132 | */ | |
1133 | ||
431547b3 | 1134 | static int gfs2_xattr_remove(struct gfs2_inode *ip, int type, const char *name) |
b3b94faa DT |
1135 | { |
1136 | struct gfs2_ea_location el; | |
1137 | int error; | |
1138 | ||
3767ac21 | 1139 | if (!ip->i_eattr) |
b3b94faa DT |
1140 | return -ENODATA; |
1141 | ||
40b78a32 | 1142 | error = gfs2_ea_find(ip, type, name, &el); |
b3b94faa DT |
1143 | if (error) |
1144 | return error; | |
1145 | if (!el.el_ea) | |
1146 | return -ENODATA; | |
1147 | ||
1148 | if (GFS2_EA_IS_STUFFED(el.el_ea)) | |
1149 | error = ea_remove_stuffed(ip, &el); | |
1150 | else | |
40b78a32 | 1151 | error = ea_remove_unstuffed(ip, el.el_bh, el.el_ea, el.el_prev, 0); |
b3b94faa DT |
1152 | |
1153 | brelse(el.el_bh); | |
1154 | ||
1155 | return error; | |
1156 | } | |
1157 | ||
1158 | /** | |
431547b3 | 1159 | * __gfs2_xattr_set - Set (or remove) a GFS2 extended attribute |
c551f66c | 1160 | * @inode: The inode |
40b78a32 SW |
1161 | * @name: The name of the extended attribute |
1162 | * @value: The value of the extended attribute (NULL for remove) | |
1163 | * @size: The size of the @value argument | |
1164 | * @flags: Create or Replace | |
431547b3 | 1165 | * @type: The type of the extended attribute |
b3b94faa | 1166 | * |
40b78a32 SW |
1167 | * See gfs2_xattr_remove() for details of the removal of xattrs. |
1168 | * | |
1169 | * Returns: 0 or errno on failure | |
b3b94faa DT |
1170 | */ |
1171 | ||
431547b3 CH |
1172 | int __gfs2_xattr_set(struct inode *inode, const char *name, |
1173 | const void *value, size_t size, int flags, int type) | |
b3b94faa | 1174 | { |
40b78a32 | 1175 | struct gfs2_inode *ip = GFS2_I(inode); |
431547b3 | 1176 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
40b78a32 SW |
1177 | struct gfs2_ea_location el; |
1178 | unsigned int namel = strlen(name); | |
b3b94faa DT |
1179 | int error; |
1180 | ||
40b78a32 SW |
1181 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
1182 | return -EPERM; | |
1183 | if (namel > GFS2_EA_MAX_NAME_LEN) | |
1184 | return -ERANGE; | |
b3b94faa | 1185 | |
54aae14b EF |
1186 | if (value == NULL) { |
1187 | error = gfs2_xattr_remove(ip, type, name); | |
1188 | if (error == -ENODATA && !(flags & XATTR_REPLACE)) | |
1189 | error = 0; | |
1190 | return error; | |
1191 | } | |
40b78a32 SW |
1192 | |
1193 | if (ea_check_size(sdp, namel, size)) | |
1194 | return -ERANGE; | |
1195 | ||
1196 | if (!ip->i_eattr) { | |
1197 | if (flags & XATTR_REPLACE) | |
1198 | return -ENODATA; | |
1199 | return ea_init(ip, type, name, value, size); | |
1200 | } | |
1201 | ||
1202 | error = gfs2_ea_find(ip, type, name, &el); | |
b3b94faa DT |
1203 | if (error) |
1204 | return error; | |
1205 | ||
40b78a32 SW |
1206 | if (el.el_ea) { |
1207 | if (ip->i_diskflags & GFS2_DIF_APPENDONLY) { | |
1208 | brelse(el.el_bh); | |
1209 | return -EPERM; | |
1210 | } | |
b3b94faa | 1211 | |
40b78a32 SW |
1212 | error = -EEXIST; |
1213 | if (!(flags & XATTR_CREATE)) { | |
1214 | int unstuffed = !GFS2_EA_IS_STUFFED(el.el_ea); | |
1215 | error = ea_set_i(ip, type, name, value, size, &el); | |
1216 | if (!error && unstuffed) | |
1217 | ea_set_remove_unstuffed(ip, &el); | |
1218 | } | |
1219 | ||
1220 | brelse(el.el_bh); | |
1221 | return error; | |
1222 | } | |
1223 | ||
1224 | error = -ENODATA; | |
1225 | if (!(flags & XATTR_REPLACE)) | |
1226 | error = ea_set_i(ip, type, name, value, size, NULL); | |
b3b94faa DT |
1227 | |
1228 | return error; | |
1229 | } | |
1230 | ||
d9a82a04 | 1231 | static int gfs2_xattr_set(const struct xattr_handler *handler, |
39f60c1c | 1232 | struct mnt_idmap *idmap, |
59301226 AV |
1233 | struct dentry *unused, struct inode *inode, |
1234 | const char *name, const void *value, | |
1235 | size_t size, int flags) | |
431547b3 | 1236 | { |
1a39ba99 AV |
1237 | struct gfs2_inode *ip = GFS2_I(inode); |
1238 | struct gfs2_holder gh; | |
1239 | int ret; | |
1240 | ||
2fba46a0 | 1241 | ret = gfs2_qa_get(ip); |
1a39ba99 AV |
1242 | if (ret) |
1243 | return ret; | |
1244 | ||
d0920a9c AG |
1245 | /* May be called from gfs_setattr with the glock locked. */ |
1246 | ||
1247 | if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { | |
1248 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); | |
1249 | if (ret) | |
2fba46a0 | 1250 | goto out; |
d0920a9c | 1251 | } else { |
2fba46a0 BP |
1252 | if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) { |
1253 | ret = -EIO; | |
1254 | goto out; | |
1255 | } | |
d0920a9c AG |
1256 | gfs2_holder_mark_uninitialized(&gh); |
1257 | } | |
1a39ba99 | 1258 | ret = __gfs2_xattr_set(inode, name, value, size, flags, handler->flags); |
d0920a9c AG |
1259 | if (gfs2_holder_initialized(&gh)) |
1260 | gfs2_glock_dq_uninit(&gh); | |
2fba46a0 BP |
1261 | out: |
1262 | gfs2_qa_put(ip); | |
1a39ba99 | 1263 | return ret; |
431547b3 CH |
1264 | } |
1265 | ||
b3b94faa DT |
1266 | static int ea_dealloc_indirect(struct gfs2_inode *ip) |
1267 | { | |
feaa7bba | 1268 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa | 1269 | struct gfs2_rgrp_list rlist; |
0ddeded4 | 1270 | struct gfs2_rgrpd *rgd; |
b3b94faa | 1271 | struct buffer_head *indbh, *dibh; |
b44b84d7 | 1272 | __be64 *eablk, *end; |
b3b94faa | 1273 | unsigned int rg_blocks = 0; |
cd915493 | 1274 | u64 bstart = 0; |
b3b94faa DT |
1275 | unsigned int blen = 0; |
1276 | unsigned int blks = 0; | |
1277 | unsigned int x; | |
1278 | int error; | |
1279 | ||
5e2f7d61 BP |
1280 | error = gfs2_rindex_update(sdp); |
1281 | if (error) | |
1282 | return error; | |
1283 | ||
b3b94faa DT |
1284 | memset(&rlist, 0, sizeof(struct gfs2_rgrp_list)); |
1285 | ||
c8d57703 | 1286 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, 0, &indbh); |
b3b94faa DT |
1287 | if (error) |
1288 | return error; | |
1289 | ||
1290 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { | |
1291 | error = -EIO; | |
1292 | goto out; | |
1293 | } | |
1294 | ||
b44b84d7 | 1295 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
b3b94faa DT |
1296 | end = eablk + sdp->sd_inptrs; |
1297 | ||
1298 | for (; eablk < end; eablk++) { | |
cd915493 | 1299 | u64 bn; |
b3b94faa DT |
1300 | |
1301 | if (!*eablk) | |
1302 | break; | |
1303 | bn = be64_to_cpu(*eablk); | |
1304 | ||
1305 | if (bstart + blen == bn) | |
1306 | blen++; | |
1307 | else { | |
1308 | if (bstart) | |
70b0c365 | 1309 | gfs2_rlist_add(ip, &rlist, bstart); |
b3b94faa DT |
1310 | bstart = bn; |
1311 | blen = 1; | |
1312 | } | |
1313 | blks++; | |
1314 | } | |
1315 | if (bstart) | |
70b0c365 | 1316 | gfs2_rlist_add(ip, &rlist, bstart); |
b3b94faa DT |
1317 | else |
1318 | goto out; | |
1319 | ||
44dab005 | 1320 | gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE, LM_FLAG_NODE_SCOPE); |
b3b94faa DT |
1321 | |
1322 | for (x = 0; x < rlist.rl_rgrps; x++) { | |
0ddeded4 | 1323 | rgd = gfs2_glock2rgrp(rlist.rl_ghs[x].gh_gl); |
bb8d8a6f | 1324 | rg_blocks += rgd->rd_length; |
b3b94faa DT |
1325 | } |
1326 | ||
1327 | error = gfs2_glock_nq_m(rlist.rl_rgrps, rlist.rl_ghs); | |
1328 | if (error) | |
1329 | goto out_rlist_free; | |
1330 | ||
cca195c5 SW |
1331 | error = gfs2_trans_begin(sdp, rg_blocks + RES_DINODE + RES_INDIRECT + |
1332 | RES_STATFS + RES_QUOTA, blks); | |
b3b94faa DT |
1333 | if (error) |
1334 | goto out_gunlock; | |
1335 | ||
350a9b0a | 1336 | gfs2_trans_add_meta(ip->i_gl, indbh); |
b3b94faa | 1337 | |
b44b84d7 | 1338 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
b3b94faa | 1339 | bstart = 0; |
0ddeded4 | 1340 | rgd = NULL; |
b3b94faa DT |
1341 | blen = 0; |
1342 | ||
1343 | for (; eablk < end; eablk++) { | |
cd915493 | 1344 | u64 bn; |
b3b94faa DT |
1345 | |
1346 | if (!*eablk) | |
1347 | break; | |
1348 | bn = be64_to_cpu(*eablk); | |
1349 | ||
1350 | if (bstart + blen == bn) | |
1351 | blen++; | |
1352 | else { | |
1353 | if (bstart) | |
0ddeded4 | 1354 | gfs2_free_meta(ip, rgd, bstart, blen); |
b3b94faa | 1355 | bstart = bn; |
0ddeded4 | 1356 | rgd = gfs2_blk2rgrpd(sdp, bstart, true); |
b3b94faa DT |
1357 | blen = 1; |
1358 | } | |
1359 | ||
1360 | *eablk = 0; | |
77658aad | 1361 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa DT |
1362 | } |
1363 | if (bstart) | |
0ddeded4 | 1364 | gfs2_free_meta(ip, rgd, bstart, blen); |
b3b94faa | 1365 | |
383f01fb | 1366 | ip->i_diskflags &= ~GFS2_DIF_EA_INDIRECT; |
b3b94faa DT |
1367 | |
1368 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1369 | if (!error) { | |
350a9b0a | 1370 | gfs2_trans_add_meta(ip->i_gl, dibh); |
539e5d6b | 1371 | gfs2_dinode_out(ip, dibh->b_data); |
b3b94faa DT |
1372 | brelse(dibh); |
1373 | } | |
1374 | ||
1375 | gfs2_trans_end(sdp); | |
1376 | ||
a91ea69f | 1377 | out_gunlock: |
b3b94faa | 1378 | gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs); |
a91ea69f | 1379 | out_rlist_free: |
b3b94faa | 1380 | gfs2_rlist_free(&rlist); |
a91ea69f | 1381 | out: |
b3b94faa | 1382 | brelse(indbh); |
b3b94faa DT |
1383 | return error; |
1384 | } | |
1385 | ||
1386 | static int ea_dealloc_block(struct gfs2_inode *ip) | |
1387 | { | |
feaa7bba | 1388 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
1389 | struct gfs2_rgrpd *rgd; |
1390 | struct buffer_head *dibh; | |
564e12b1 | 1391 | struct gfs2_holder gh; |
b3b94faa DT |
1392 | int error; |
1393 | ||
5e2f7d61 BP |
1394 | error = gfs2_rindex_update(sdp); |
1395 | if (error) | |
1396 | return error; | |
1397 | ||
66fc061b | 1398 | rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr, 1); |
b3b94faa DT |
1399 | if (!rgd) { |
1400 | gfs2_consist_inode(ip); | |
1401 | return -EIO; | |
1402 | } | |
1403 | ||
4fc7ec31 BP |
1404 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, |
1405 | LM_FLAG_NODE_SCOPE, &gh); | |
b3b94faa DT |
1406 | if (error) |
1407 | return error; | |
1408 | ||
cca195c5 SW |
1409 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_DINODE + RES_STATFS + |
1410 | RES_QUOTA, 1); | |
b3b94faa DT |
1411 | if (error) |
1412 | goto out_gunlock; | |
1413 | ||
0ddeded4 | 1414 | gfs2_free_meta(ip, rgd, ip->i_eattr, 1); |
b3b94faa | 1415 | |
3767ac21 | 1416 | ip->i_eattr = 0; |
77658aad | 1417 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
b3b94faa | 1418 | |
38552ff6 AG |
1419 | if (likely(!test_bit(GIF_ALLOC_FAILED, &ip->i_flags))) { |
1420 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
1421 | if (!error) { | |
1422 | gfs2_trans_add_meta(ip->i_gl, dibh); | |
1423 | gfs2_dinode_out(ip, dibh->b_data); | |
1424 | brelse(dibh); | |
1425 | } | |
b3b94faa DT |
1426 | } |
1427 | ||
1428 | gfs2_trans_end(sdp); | |
1429 | ||
a91ea69f | 1430 | out_gunlock: |
564e12b1 | 1431 | gfs2_glock_dq_uninit(&gh); |
b3b94faa DT |
1432 | return error; |
1433 | } | |
1434 | ||
1435 | /** | |
1436 | * gfs2_ea_dealloc - deallocate the extended attribute fork | |
1437 | * @ip: the inode | |
1438 | * | |
1439 | * Returns: errno | |
1440 | */ | |
1441 | ||
1442 | int gfs2_ea_dealloc(struct gfs2_inode *ip) | |
1443 | { | |
b3b94faa DT |
1444 | int error; |
1445 | ||
8e2e0047 BP |
1446 | error = gfs2_rindex_update(GFS2_SB(&ip->i_inode)); |
1447 | if (error) | |
1448 | return error; | |
1449 | ||
f4108a60 | 1450 | error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); |
b3b94faa | 1451 | if (error) |
5407e242 | 1452 | return error; |
b3b94faa | 1453 | |
38552ff6 AG |
1454 | if (likely(!test_bit(GIF_ALLOC_FAILED, &ip->i_flags))) { |
1455 | error = ea_foreach(ip, ea_dealloc_unstuffed, NULL); | |
b3b94faa | 1456 | if (error) |
8339ee54 | 1457 | goto out_quota; |
38552ff6 AG |
1458 | |
1459 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { | |
1460 | error = ea_dealloc_indirect(ip); | |
1461 | if (error) | |
1462 | goto out_quota; | |
1463 | } | |
b3b94faa DT |
1464 | } |
1465 | ||
1466 | error = ea_dealloc_block(ip); | |
1467 | ||
a91ea69f | 1468 | out_quota: |
b3b94faa | 1469 | gfs2_quota_unhold(ip); |
b3b94faa DT |
1470 | return error; |
1471 | } | |
1472 | ||
b7bb0a12 | 1473 | static const struct xattr_handler gfs2_xattr_user_handler = { |
40b78a32 | 1474 | .prefix = XATTR_USER_PREFIX, |
431547b3 CH |
1475 | .flags = GFS2_EATYPE_USR, |
1476 | .get = gfs2_xattr_get, | |
1477 | .set = gfs2_xattr_set, | |
40b78a32 SW |
1478 | }; |
1479 | ||
b7bb0a12 | 1480 | static const struct xattr_handler gfs2_xattr_security_handler = { |
40b78a32 | 1481 | .prefix = XATTR_SECURITY_PREFIX, |
431547b3 CH |
1482 | .flags = GFS2_EATYPE_SECURITY, |
1483 | .get = gfs2_xattr_get, | |
1484 | .set = gfs2_xattr_set, | |
40b78a32 SW |
1485 | }; |
1486 | ||
866eef48 AG |
1487 | static bool |
1488 | gfs2_xattr_trusted_list(struct dentry *dentry) | |
1489 | { | |
1490 | return capable(CAP_SYS_ADMIN); | |
1491 | } | |
1492 | ||
1493 | static const struct xattr_handler gfs2_xattr_trusted_handler = { | |
1494 | .prefix = XATTR_TRUSTED_PREFIX, | |
1495 | .flags = GFS2_EATYPE_TRUSTED, | |
1496 | .list = gfs2_xattr_trusted_list, | |
1497 | .get = gfs2_xattr_get, | |
1498 | .set = gfs2_xattr_set, | |
1499 | }; | |
1500 | ||
89491faf | 1501 | const struct xattr_handler * const gfs2_xattr_handlers_max[] = { |
866eef48 AG |
1502 | /* GFS2_FS_FORMAT_MAX */ |
1503 | &gfs2_xattr_trusted_handler, | |
1504 | ||
1505 | /* GFS2_FS_FORMAT_MIN */ | |
40b78a32 SW |
1506 | &gfs2_xattr_user_handler, |
1507 | &gfs2_xattr_security_handler, | |
40b78a32 SW |
1508 | NULL, |
1509 | }; | |
1510 | ||
89491faf | 1511 | const struct xattr_handler * const *gfs2_xattr_handlers_min = gfs2_xattr_handlers_max + 1; |