David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 15 | #include <linux/gfs2_ondisk.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 16 | #include <asm/uaccess.h> |
| 17 | |
| 18 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 19 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 20 | #include "acl.h" |
Steven Whitehouse | 307cf6e | 2009-08-26 18:51:04 +0100 | [diff] [blame] | 21 | #include "xattr.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 28 | #include "util.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 40 | static int ea_calc_size(struct gfs2_sbd *sdp, unsigned int nsize, size_t dsize, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 41 | unsigned int *size) |
| 42 | { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 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) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 49 | return 1; |
| 50 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 51 | /* Unstuffed */ |
| 52 | *size = ALIGN(sizeof(struct gfs2_ea_header) + nsize + |
| 53 | (sizeof(__be64) * DIV_ROUND_UP(dsize, jbsize)), 8); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 54 | |
| 55 | return 0; |
| 56 | } |
| 57 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 58 | static int ea_check_size(struct gfs2_sbd *sdp, unsigned int nsize, size_t dsize) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 59 | { |
| 60 | unsigned int size; |
| 61 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 62 | if (dsize > GFS2_EA_MAX_DATA_LEN) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 63 | return -ERANGE; |
| 64 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 65 | ea_calc_size(sdp, nsize, dsize, &size); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 74 | typedef int (*ea_call_t) (struct gfs2_inode *ip, struct buffer_head *bh, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 75 | struct gfs2_ea_header *ea, |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 76 | struct gfs2_ea_header *prev, void *private); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 84 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_EA)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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; |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 90 | if (!(bh->b_data <= (char *)ea && (char *)GFS2_EA2NEXT(ea) <= |
| 91 | bh->b_data + bh->b_size)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 110 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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; |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 118 | __be64 *eablk, *end; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 119 | int error; |
| 120 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 121 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 122 | if (error) |
| 123 | return error; |
| 124 | |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 125 | if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 126 | error = ea_foreach_i(ip, bh, ea_call, data); |
| 127 | goto out; |
| 128 | } |
| 129 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 130 | if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_IN)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 131 | error = -EIO; |
| 132 | goto out; |
| 133 | } |
| 134 | |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 135 | eablk = (__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header)); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 136 | end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 137 | |
| 138 | for (; eablk < end; eablk++) { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 139 | u64 bn; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 140 | |
| 141 | if (!*eablk) |
| 142 | break; |
| 143 | bn = be64_to_cpu(*eablk); |
| 144 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 145 | error = gfs2_meta_read(ip->i_gl, bn, DIO_WAIT, &eabh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 146 | if (error) |
| 147 | break; |
| 148 | error = ea_foreach_i(ip, eabh, ea_call, data); |
| 149 | brelse(eabh); |
| 150 | if (error) |
| 151 | break; |
| 152 | } |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 153 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 154 | brelse(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 155 | return error; |
| 156 | } |
| 157 | |
| 158 | struct ea_find { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 159 | int type; |
| 160 | const char *name; |
| 161 | size_t namel; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 170 | |
| 171 | if (ea->ea_type == GFS2_EATYPE_UNUSED) |
| 172 | return 0; |
| 173 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 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)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 186 | return 0; |
| 187 | } |
| 188 | |
Steven Whitehouse | 479c427 | 2009-10-02 12:00:00 +0100 | [diff] [blame] | 189 | static int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name, |
| 190 | struct gfs2_ea_location *el) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 191 | { |
| 192 | struct ea_find ef; |
| 193 | int error; |
| 194 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 195 | ef.type = type; |
| 196 | ef.name = name; |
| 197 | ef.namel = strlen(name); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 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; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 229 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 230 | struct gfs2_rgrpd *rgd; |
| 231 | struct gfs2_holder rg_gh; |
| 232 | struct buffer_head *dibh; |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 233 | __be64 *dataptrs; |
| 234 | u64 bn = 0; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 235 | u64 bstart = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 236 | unsigned int blen = 0; |
| 237 | unsigned int blks = 0; |
| 238 | unsigned int x; |
| 239 | int error; |
| 240 | |
| 241 | if (GFS2_EA_IS_STUFFED(ea)) |
| 242 | return 0; |
| 243 | |
| 244 | dataptrs = GFS2_EA2DATAPTRS(ea); |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 245 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 246 | if (*dataptrs) { |
| 247 | blks++; |
| 248 | bn = be64_to_cpu(*dataptrs); |
| 249 | } |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 250 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 251 | if (!blks) |
| 252 | return 0; |
| 253 | |
| 254 | rgd = gfs2_blk2rgrpd(sdp, bn); |
| 255 | if (!rgd) { |
| 256 | gfs2_consist_inode(ip); |
| 257 | return -EIO; |
| 258 | } |
| 259 | |
| 260 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &rg_gh); |
| 261 | if (error) |
| 262 | return error; |
| 263 | |
Steven Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 264 | error = gfs2_trans_begin(sdp, rgd->rd_length + RES_DINODE + |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 265 | RES_EATTR + RES_STATFS + RES_QUOTA, blks); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 266 | if (error) |
| 267 | goto out_gunlock; |
| 268 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 269 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 270 | |
| 271 | dataptrs = GFS2_EA2DATAPTRS(ea); |
| 272 | for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) { |
| 273 | if (!*dataptrs) |
| 274 | break; |
| 275 | bn = be64_to_cpu(*dataptrs); |
| 276 | |
| 277 | if (bstart + blen == bn) |
| 278 | blen++; |
| 279 | else { |
| 280 | if (bstart) |
| 281 | gfs2_free_meta(ip, bstart, blen); |
| 282 | bstart = bn; |
| 283 | blen = 1; |
| 284 | } |
| 285 | |
| 286 | *dataptrs = 0; |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 287 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 288 | } |
| 289 | if (bstart) |
| 290 | gfs2_free_meta(ip, bstart, blen); |
| 291 | |
| 292 | if (prev && !leave) { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 293 | u32 len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 294 | |
| 295 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); |
| 296 | prev->ea_rec_len = cpu_to_be32(len); |
| 297 | |
| 298 | if (GFS2_EA_IS_LAST(ea)) |
| 299 | prev->ea_flags |= GFS2_EAFLAG_LAST; |
| 300 | } else { |
| 301 | ea->ea_type = GFS2_EATYPE_UNUSED; |
| 302 | ea->ea_num_ptrs = 0; |
| 303 | } |
| 304 | |
| 305 | error = gfs2_meta_inode_buffer(ip, &dibh); |
| 306 | if (!error) { |
Steven Whitehouse | 4bd91ba | 2007-06-05 09:39:18 +0100 | [diff] [blame] | 307 | ip->i_inode.i_ctime = CURRENT_TIME; |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 308 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
Steven Whitehouse | 539e5d6 | 2006-10-31 15:07:05 -0500 | [diff] [blame] | 309 | gfs2_dinode_out(ip, dibh->b_data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 310 | brelse(dibh); |
| 311 | } |
| 312 | |
| 313 | gfs2_trans_end(sdp); |
| 314 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 315 | out_gunlock: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 316 | gfs2_glock_dq_uninit(&rg_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 317 | return error; |
| 318 | } |
| 319 | |
| 320 | static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh, |
| 321 | struct gfs2_ea_header *ea, |
| 322 | struct gfs2_ea_header *prev, int leave) |
| 323 | { |
| 324 | struct gfs2_alloc *al; |
| 325 | int error; |
| 326 | |
| 327 | al = gfs2_alloc_get(ip); |
Cyrill Gorcunov | 182fe5a | 2008-03-03 21:54:21 +0300 | [diff] [blame] | 328 | if (!al) |
| 329 | return -ENOMEM; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 330 | |
| 331 | error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); |
| 332 | if (error) |
| 333 | goto out_alloc; |
| 334 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 335 | error = gfs2_rindex_hold(GFS2_SB(&ip->i_inode), &al->al_ri_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 336 | if (error) |
| 337 | goto out_quota; |
| 338 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 339 | error = ea_dealloc_unstuffed(ip, bh, ea, prev, (leave) ? &error : NULL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 340 | |
| 341 | gfs2_glock_dq_uninit(&al->al_ri_gh); |
| 342 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 343 | out_quota: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 344 | gfs2_quota_unhold(ip); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 345 | out_alloc: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 346 | gfs2_alloc_put(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 347 | return error; |
| 348 | } |
| 349 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 350 | struct ea_list { |
| 351 | struct gfs2_ea_request *ei_er; |
| 352 | unsigned int ei_size; |
| 353 | }; |
| 354 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 355 | static inline unsigned int gfs2_ea_strlen(struct gfs2_ea_header *ea) |
| 356 | { |
| 357 | switch (ea->ea_type) { |
| 358 | case GFS2_EATYPE_USR: |
| 359 | return 5 + ea->ea_name_len + 1; |
| 360 | case GFS2_EATYPE_SYS: |
| 361 | return 7 + ea->ea_name_len + 1; |
| 362 | case GFS2_EATYPE_SECURITY: |
| 363 | return 9 + ea->ea_name_len + 1; |
| 364 | default: |
| 365 | return 0; |
| 366 | } |
| 367 | } |
| 368 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 369 | static int ea_list_i(struct gfs2_inode *ip, struct buffer_head *bh, |
| 370 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, |
| 371 | void *private) |
| 372 | { |
| 373 | struct ea_list *ei = private; |
| 374 | struct gfs2_ea_request *er = ei->ei_er; |
Ryan O'Hara | 639b6d7 | 2006-05-22 10:08:35 -0400 | [diff] [blame] | 375 | unsigned int ea_size = gfs2_ea_strlen(ea); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 376 | |
| 377 | if (ea->ea_type == GFS2_EATYPE_UNUSED) |
| 378 | return 0; |
| 379 | |
| 380 | if (er->er_data_len) { |
Steven Whitehouse | 01eb7c0 | 2006-06-06 17:31:30 -0400 | [diff] [blame] | 381 | char *prefix = NULL; |
| 382 | unsigned int l = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 383 | char c = 0; |
| 384 | |
| 385 | if (ei->ei_size + ea_size > er->er_data_len) |
| 386 | return -ERANGE; |
| 387 | |
Ryan O'Hara | 639b6d7 | 2006-05-22 10:08:35 -0400 | [diff] [blame] | 388 | switch (ea->ea_type) { |
| 389 | case GFS2_EATYPE_USR: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 390 | prefix = "user."; |
| 391 | l = 5; |
Ryan O'Hara | 639b6d7 | 2006-05-22 10:08:35 -0400 | [diff] [blame] | 392 | break; |
| 393 | case GFS2_EATYPE_SYS: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 394 | prefix = "system."; |
| 395 | l = 7; |
Ryan O'Hara | 639b6d7 | 2006-05-22 10:08:35 -0400 | [diff] [blame] | 396 | break; |
| 397 | case GFS2_EATYPE_SECURITY: |
| 398 | prefix = "security."; |
| 399 | l = 9; |
| 400 | break; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 401 | } |
| 402 | |
Steven Whitehouse | 01eb7c0 | 2006-06-06 17:31:30 -0400 | [diff] [blame] | 403 | BUG_ON(l == 0); |
| 404 | |
Steven Whitehouse | 90cdd20 | 2006-05-22 10:36:25 -0400 | [diff] [blame] | 405 | memcpy(er->er_data + ei->ei_size, prefix, l); |
| 406 | memcpy(er->er_data + ei->ei_size + l, GFS2_EA2NAME(ea), |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 407 | ea->ea_name_len); |
Steven Whitehouse | 90cdd20 | 2006-05-22 10:36:25 -0400 | [diff] [blame] | 408 | memcpy(er->er_data + ei->ei_size + ea_size - 1, &c, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 409 | } |
| 410 | |
| 411 | ei->ei_size += ea_size; |
| 412 | |
| 413 | return 0; |
| 414 | } |
| 415 | |
| 416 | /** |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 417 | * gfs2_listxattr - List gfs2 extended attributes |
| 418 | * @dentry: The dentry whose inode we are interested in |
| 419 | * @buffer: The buffer to write the results |
| 420 | * @size: The size of the buffer |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 421 | * |
| 422 | * Returns: actual size of data on success, -errno on error |
| 423 | */ |
| 424 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 425 | ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 426 | { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 427 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
| 428 | struct gfs2_ea_request er; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 429 | struct gfs2_holder i_gh; |
| 430 | int error; |
| 431 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 432 | memset(&er, 0, sizeof(struct gfs2_ea_request)); |
| 433 | if (size) { |
| 434 | er.er_data = buffer; |
| 435 | er.er_data_len = size; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 436 | } |
| 437 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 438 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 439 | if (error) |
| 440 | return error; |
| 441 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 442 | if (ip->i_eattr) { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 443 | struct ea_list ei = { .ei_er = &er, .ei_size = 0 }; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 444 | |
| 445 | error = ea_foreach(ip, ea_list_i, &ei); |
| 446 | if (!error) |
| 447 | error = ei.ei_size; |
| 448 | } |
| 449 | |
| 450 | gfs2_glock_dq_uninit(&i_gh); |
| 451 | |
| 452 | return error; |
| 453 | } |
| 454 | |
| 455 | /** |
| 456 | * ea_get_unstuffed - actually copies the unstuffed data into the |
| 457 | * request buffer |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 458 | * @ip: The GFS2 inode |
| 459 | * @ea: The extended attribute header structure |
| 460 | * @data: The data to be copied |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 461 | * |
| 462 | * Returns: errno |
| 463 | */ |
| 464 | |
| 465 | static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea, |
| 466 | char *data) |
| 467 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 468 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 469 | struct buffer_head **bh; |
| 470 | unsigned int amount = GFS2_EA_DATA_LEN(ea); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 471 | unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 472 | __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 473 | unsigned int x; |
| 474 | int error = 0; |
| 475 | |
Josef Bacik | 16c5f06 | 2008-04-09 09:33:41 -0400 | [diff] [blame] | 476 | bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 477 | if (!bh) |
| 478 | return -ENOMEM; |
| 479 | |
| 480 | for (x = 0; x < nptrs; x++) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 481 | error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, |
| 482 | bh + x); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 483 | if (error) { |
| 484 | while (x--) |
| 485 | brelse(bh[x]); |
| 486 | goto out; |
| 487 | } |
| 488 | dataptrs++; |
| 489 | } |
| 490 | |
| 491 | for (x = 0; x < nptrs; x++) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 492 | error = gfs2_meta_wait(sdp, bh[x]); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 493 | if (error) { |
| 494 | for (; x < nptrs; x++) |
| 495 | brelse(bh[x]); |
| 496 | goto out; |
| 497 | } |
| 498 | if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) { |
| 499 | for (; x < nptrs; x++) |
| 500 | brelse(bh[x]); |
| 501 | error = -EIO; |
| 502 | goto out; |
| 503 | } |
| 504 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 505 | memcpy(data, bh[x]->b_data + sizeof(struct gfs2_meta_header), |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 506 | (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize); |
| 507 | |
| 508 | amount -= sdp->sd_jbsize; |
| 509 | data += sdp->sd_jbsize; |
| 510 | |
| 511 | brelse(bh[x]); |
| 512 | } |
| 513 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 514 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 515 | kfree(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 516 | return error; |
| 517 | } |
| 518 | |
Steven Whitehouse | 479c427 | 2009-10-02 12:00:00 +0100 | [diff] [blame] | 519 | static int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el, |
| 520 | char *data, size_t size) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 521 | { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 522 | int ret; |
| 523 | size_t len = GFS2_EA_DATA_LEN(el->el_ea); |
| 524 | if (len > size) |
| 525 | return -ERANGE; |
| 526 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 527 | if (GFS2_EA_IS_STUFFED(el->el_ea)) { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 528 | memcpy(data, GFS2_EA2DATA(el->el_ea), len); |
| 529 | return len; |
| 530 | } |
| 531 | ret = ea_get_unstuffed(ip, el->el_ea, data); |
| 532 | if (ret < 0) |
| 533 | return ret; |
| 534 | return len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 535 | } |
| 536 | |
Steven Whitehouse | 479c427 | 2009-10-02 12:00:00 +0100 | [diff] [blame] | 537 | int gfs2_xattr_acl_get(struct gfs2_inode *ip, const char *name, char **ppdata) |
| 538 | { |
| 539 | struct gfs2_ea_location el; |
| 540 | int error; |
| 541 | int len; |
| 542 | char *data; |
| 543 | |
| 544 | error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, name, &el); |
| 545 | if (error) |
| 546 | return error; |
| 547 | if (!el.el_ea) |
| 548 | goto out; |
| 549 | if (!GFS2_EA_DATA_LEN(el.el_ea)) |
| 550 | goto out; |
| 551 | |
| 552 | len = GFS2_EA_DATA_LEN(el.el_ea); |
| 553 | data = kmalloc(len, GFP_NOFS); |
| 554 | error = -ENOMEM; |
| 555 | if (data == NULL) |
| 556 | goto out; |
| 557 | |
| 558 | error = gfs2_ea_get_copy(ip, &el, data, len); |
| 559 | if (error == 0) |
| 560 | error = len; |
| 561 | *ppdata = data; |
| 562 | out: |
| 563 | brelse(el.el_bh); |
| 564 | return error; |
| 565 | } |
| 566 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 567 | /** |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 568 | * gfs2_xattr_get - Get a GFS2 extended attribute |
| 569 | * @inode: The inode |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 570 | * @name: The name of the extended attribute |
| 571 | * @buffer: The buffer to write the result into |
| 572 | * @size: The size of the buffer |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 573 | * @type: The type of extended attribute |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 574 | * |
| 575 | * Returns: actual size of data on success, -errno on error |
| 576 | */ |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 577 | static int gfs2_xattr_get(struct dentry *dentry, const char *name, |
| 578 | void *buffer, size_t size, int type) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 579 | { |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 580 | struct gfs2_inode *ip = GFS2_I(dentry->d_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 581 | struct gfs2_ea_location el; |
| 582 | int error; |
| 583 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 584 | if (!ip->i_eattr) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 585 | return -ENODATA; |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 586 | if (strlen(name) > GFS2_EA_MAX_NAME_LEN) |
| 587 | return -EINVAL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 588 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 589 | error = gfs2_ea_find(ip, type, name, &el); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 590 | if (error) |
| 591 | return error; |
| 592 | if (!el.el_ea) |
| 593 | return -ENODATA; |
Steven Whitehouse | 86d0063 | 2009-09-14 09:50:57 +0100 | [diff] [blame] | 594 | if (size) |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 595 | error = gfs2_ea_get_copy(ip, &el, buffer, size); |
| 596 | else |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 597 | error = GFS2_EA_DATA_LEN(el.el_ea); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 598 | brelse(el.el_bh); |
| 599 | |
| 600 | return error; |
| 601 | } |
| 602 | |
| 603 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 604 | * ea_alloc_blk - allocates a new block for extended attributes. |
| 605 | * @ip: A pointer to the inode that's getting extended attributes |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 606 | * @bhp: Pointer to pointer to a struct buffer_head |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 607 | * |
| 608 | * Returns: errno |
| 609 | */ |
| 610 | |
| 611 | static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp) |
| 612 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 613 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 614 | struct gfs2_ea_header *ea; |
Steven Whitehouse | b45e41d | 2008-02-06 10:11:15 +0000 | [diff] [blame] | 615 | unsigned int n = 1; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 616 | u64 block; |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 617 | int error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 618 | |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 619 | error = gfs2_alloc_block(ip, &block, &n); |
| 620 | if (error) |
| 621 | return error; |
Steven Whitehouse | 5731be5 | 2008-02-01 13:16:55 +0000 | [diff] [blame] | 622 | gfs2_trans_add_unrevoke(sdp, block, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 623 | *bhp = gfs2_meta_new(ip->i_gl, block); |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 624 | gfs2_trans_add_bh(ip->i_gl, *bhp, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 625 | gfs2_metatype_set(*bhp, GFS2_METATYPE_EA, GFS2_FORMAT_EA); |
| 626 | gfs2_buffer_clear_tail(*bhp, sizeof(struct gfs2_meta_header)); |
| 627 | |
| 628 | ea = GFS2_EA_BH2FIRST(*bhp); |
| 629 | ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize); |
| 630 | ea->ea_type = GFS2_EATYPE_UNUSED; |
| 631 | ea->ea_flags = GFS2_EAFLAG_LAST; |
| 632 | ea->ea_num_ptrs = 0; |
| 633 | |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 634 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 635 | |
| 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | /** |
| 640 | * ea_write - writes the request info to an ea, creating new blocks if |
| 641 | * necessary |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 642 | * @ip: inode that is being modified |
| 643 | * @ea: the location of the new ea in a block |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 644 | * @er: the write request |
| 645 | * |
| 646 | * Note: does not update ea_rec_len or the GFS2_EAFLAG_LAST bin of ea_flags |
| 647 | * |
| 648 | * returns : errno |
| 649 | */ |
| 650 | |
| 651 | static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea, |
| 652 | struct gfs2_ea_request *er) |
| 653 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 654 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 655 | int error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 656 | |
| 657 | ea->ea_data_len = cpu_to_be32(er->er_data_len); |
| 658 | ea->ea_name_len = er->er_name_len; |
| 659 | ea->ea_type = er->er_type; |
| 660 | ea->__pad = 0; |
| 661 | |
| 662 | memcpy(GFS2_EA2NAME(ea), er->er_name, er->er_name_len); |
| 663 | |
| 664 | if (GFS2_EAREQ_SIZE_STUFFED(er) <= sdp->sd_jbsize) { |
| 665 | ea->ea_num_ptrs = 0; |
| 666 | memcpy(GFS2_EA2DATA(ea), er->er_data, er->er_data_len); |
| 667 | } else { |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 668 | __be64 *dataptr = GFS2_EA2DATAPTRS(ea); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 669 | const char *data = er->er_data; |
| 670 | unsigned int data_len = er->er_data_len; |
| 671 | unsigned int copy; |
| 672 | unsigned int x; |
| 673 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 674 | ea->ea_num_ptrs = DIV_ROUND_UP(er->er_data_len, sdp->sd_jbsize); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 675 | for (x = 0; x < ea->ea_num_ptrs; x++) { |
| 676 | struct buffer_head *bh; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 677 | u64 block; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 678 | int mh_size = sizeof(struct gfs2_meta_header); |
Steven Whitehouse | b45e41d | 2008-02-06 10:11:15 +0000 | [diff] [blame] | 679 | unsigned int n = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 680 | |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 681 | error = gfs2_alloc_block(ip, &block, &n); |
| 682 | if (error) |
| 683 | return error; |
Steven Whitehouse | 5731be5 | 2008-02-01 13:16:55 +0000 | [diff] [blame] | 684 | gfs2_trans_add_unrevoke(sdp, block, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 685 | bh = gfs2_meta_new(ip->i_gl, block); |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 686 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 687 | gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED); |
| 688 | |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 689 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 690 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 691 | copy = data_len > sdp->sd_jbsize ? sdp->sd_jbsize : |
| 692 | data_len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 693 | memcpy(bh->b_data + mh_size, data, copy); |
| 694 | if (copy < sdp->sd_jbsize) |
| 695 | memset(bh->b_data + mh_size + copy, 0, |
| 696 | sdp->sd_jbsize - copy); |
| 697 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 698 | *dataptr++ = cpu_to_be64(bh->b_blocknr); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 699 | data += copy; |
| 700 | data_len -= copy; |
| 701 | |
| 702 | brelse(bh); |
| 703 | } |
| 704 | |
| 705 | gfs2_assert_withdraw(sdp, !data_len); |
| 706 | } |
| 707 | |
| 708 | return 0; |
| 709 | } |
| 710 | |
| 711 | typedef int (*ea_skeleton_call_t) (struct gfs2_inode *ip, |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 712 | struct gfs2_ea_request *er, void *private); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 713 | |
| 714 | static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er, |
| 715 | unsigned int blks, |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 716 | ea_skeleton_call_t skeleton_call, void *private) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 717 | { |
| 718 | struct gfs2_alloc *al; |
| 719 | struct buffer_head *dibh; |
| 720 | int error; |
| 721 | |
| 722 | al = gfs2_alloc_get(ip); |
Cyrill Gorcunov | 182fe5a | 2008-03-03 21:54:21 +0300 | [diff] [blame] | 723 | if (!al) |
| 724 | return -ENOMEM; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 725 | |
Steven Whitehouse | d82661d | 2008-03-10 15:34:50 +0000 | [diff] [blame] | 726 | error = gfs2_quota_lock_check(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 727 | if (error) |
| 728 | goto out; |
| 729 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 730 | al->al_requested = blks; |
| 731 | |
| 732 | error = gfs2_inplace_reserve(ip); |
| 733 | if (error) |
| 734 | goto out_gunlock_q; |
| 735 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 736 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), |
Steven Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 737 | blks + al->al_rgd->rd_length + |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 738 | RES_DINODE + RES_STATFS + RES_QUOTA, 0); |
| 739 | if (error) |
| 740 | goto out_ipres; |
| 741 | |
| 742 | error = skeleton_call(ip, er, private); |
| 743 | if (error) |
| 744 | goto out_end_trans; |
| 745 | |
| 746 | error = gfs2_meta_inode_buffer(ip, &dibh); |
| 747 | if (!error) { |
Steven Whitehouse | 4bd91ba | 2007-06-05 09:39:18 +0100 | [diff] [blame] | 748 | ip->i_inode.i_ctime = CURRENT_TIME; |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 749 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
Steven Whitehouse | 539e5d6 | 2006-10-31 15:07:05 -0500 | [diff] [blame] | 750 | gfs2_dinode_out(ip, dibh->b_data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 751 | brelse(dibh); |
| 752 | } |
| 753 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 754 | out_end_trans: |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 755 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 756 | out_ipres: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 757 | gfs2_inplace_release(ip); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 758 | out_gunlock_q: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 759 | gfs2_quota_unlock(ip); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 760 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 761 | gfs2_alloc_put(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 762 | return error; |
| 763 | } |
| 764 | |
| 765 | static int ea_init_i(struct gfs2_inode *ip, struct gfs2_ea_request *er, |
| 766 | void *private) |
| 767 | { |
| 768 | struct buffer_head *bh; |
| 769 | int error; |
| 770 | |
| 771 | error = ea_alloc_blk(ip, &bh); |
| 772 | if (error) |
| 773 | return error; |
| 774 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 775 | ip->i_eattr = bh->b_blocknr; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 776 | error = ea_write(ip, GFS2_EA_BH2FIRST(bh), er); |
| 777 | |
| 778 | brelse(bh); |
| 779 | |
| 780 | return error; |
| 781 | } |
| 782 | |
| 783 | /** |
| 784 | * ea_init - initializes a new eattr block |
| 785 | * @ip: |
| 786 | * @er: |
| 787 | * |
| 788 | * Returns: errno |
| 789 | */ |
| 790 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 791 | static int ea_init(struct gfs2_inode *ip, int type, const char *name, |
| 792 | const void *data, size_t size) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 793 | { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 794 | struct gfs2_ea_request er; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 795 | unsigned int jbsize = GFS2_SB(&ip->i_inode)->sd_jbsize; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 796 | unsigned int blks = 1; |
| 797 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 798 | er.er_type = type; |
| 799 | er.er_name = name; |
| 800 | er.er_name_len = strlen(name); |
| 801 | er.er_data = (void *)data; |
| 802 | er.er_data_len = size; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 803 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 804 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > jbsize) |
| 805 | blks += DIV_ROUND_UP(er.er_data_len, jbsize); |
| 806 | |
| 807 | return ea_alloc_skeleton(ip, &er, blks, ea_init_i, NULL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 808 | } |
| 809 | |
| 810 | static struct gfs2_ea_header *ea_split_ea(struct gfs2_ea_header *ea) |
| 811 | { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 812 | u32 ea_size = GFS2_EA_SIZE(ea); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 813 | struct gfs2_ea_header *new = (struct gfs2_ea_header *)((char *)ea + |
| 814 | ea_size); |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 815 | u32 new_size = GFS2_EA_REC_LEN(ea) - ea_size; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 816 | int last = ea->ea_flags & GFS2_EAFLAG_LAST; |
| 817 | |
| 818 | ea->ea_rec_len = cpu_to_be32(ea_size); |
| 819 | ea->ea_flags ^= last; |
| 820 | |
| 821 | new->ea_rec_len = cpu_to_be32(new_size); |
| 822 | new->ea_flags = last; |
| 823 | |
| 824 | return new; |
| 825 | } |
| 826 | |
| 827 | static void ea_set_remove_stuffed(struct gfs2_inode *ip, |
| 828 | struct gfs2_ea_location *el) |
| 829 | { |
| 830 | struct gfs2_ea_header *ea = el->el_ea; |
| 831 | struct gfs2_ea_header *prev = el->el_prev; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 832 | u32 len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 833 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 834 | gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 835 | |
| 836 | if (!prev || !GFS2_EA_IS_STUFFED(ea)) { |
| 837 | ea->ea_type = GFS2_EATYPE_UNUSED; |
| 838 | return; |
| 839 | } else if (GFS2_EA2NEXT(prev) != ea) { |
| 840 | prev = GFS2_EA2NEXT(prev); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 841 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), GFS2_EA2NEXT(prev) == ea); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 842 | } |
| 843 | |
| 844 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); |
| 845 | prev->ea_rec_len = cpu_to_be32(len); |
| 846 | |
| 847 | if (GFS2_EA_IS_LAST(ea)) |
| 848 | prev->ea_flags |= GFS2_EAFLAG_LAST; |
| 849 | } |
| 850 | |
| 851 | struct ea_set { |
| 852 | int ea_split; |
| 853 | |
| 854 | struct gfs2_ea_request *es_er; |
| 855 | struct gfs2_ea_location *es_el; |
| 856 | |
| 857 | struct buffer_head *es_bh; |
| 858 | struct gfs2_ea_header *es_ea; |
| 859 | }; |
| 860 | |
| 861 | static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh, |
| 862 | struct gfs2_ea_header *ea, struct ea_set *es) |
| 863 | { |
| 864 | struct gfs2_ea_request *er = es->es_er; |
| 865 | struct buffer_head *dibh; |
| 866 | int error; |
| 867 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 868 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + 2 * RES_EATTR, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 869 | if (error) |
| 870 | return error; |
| 871 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 872 | gfs2_trans_add_bh(ip->i_gl, bh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 873 | |
| 874 | if (es->ea_split) |
| 875 | ea = ea_split_ea(ea); |
| 876 | |
| 877 | ea_write(ip, ea, er); |
| 878 | |
| 879 | if (es->es_el) |
| 880 | ea_set_remove_stuffed(ip, es->es_el); |
| 881 | |
| 882 | error = gfs2_meta_inode_buffer(ip, &dibh); |
| 883 | if (error) |
| 884 | goto out; |
Steven Whitehouse | 4bd91ba | 2007-06-05 09:39:18 +0100 | [diff] [blame] | 885 | ip->i_inode.i_ctime = CURRENT_TIME; |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 886 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
Steven Whitehouse | 539e5d6 | 2006-10-31 15:07:05 -0500 | [diff] [blame] | 887 | gfs2_dinode_out(ip, dibh->b_data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 888 | brelse(dibh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 889 | out: |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 890 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 891 | return error; |
| 892 | } |
| 893 | |
| 894 | static int ea_set_simple_alloc(struct gfs2_inode *ip, |
| 895 | struct gfs2_ea_request *er, void *private) |
| 896 | { |
| 897 | struct ea_set *es = private; |
| 898 | struct gfs2_ea_header *ea = es->es_ea; |
| 899 | int error; |
| 900 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 901 | gfs2_trans_add_bh(ip->i_gl, es->es_bh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 902 | |
| 903 | if (es->ea_split) |
| 904 | ea = ea_split_ea(ea); |
| 905 | |
| 906 | error = ea_write(ip, ea, er); |
| 907 | if (error) |
| 908 | return error; |
| 909 | |
| 910 | if (es->es_el) |
| 911 | ea_set_remove_stuffed(ip, es->es_el); |
| 912 | |
| 913 | return 0; |
| 914 | } |
| 915 | |
| 916 | static int ea_set_simple(struct gfs2_inode *ip, struct buffer_head *bh, |
| 917 | struct gfs2_ea_header *ea, struct gfs2_ea_header *prev, |
| 918 | void *private) |
| 919 | { |
| 920 | struct ea_set *es = private; |
| 921 | unsigned int size; |
| 922 | int stuffed; |
| 923 | int error; |
| 924 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 925 | stuffed = ea_calc_size(GFS2_SB(&ip->i_inode), es->es_er->er_name_len, |
| 926 | es->es_er->er_data_len, &size); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 927 | |
| 928 | if (ea->ea_type == GFS2_EATYPE_UNUSED) { |
| 929 | if (GFS2_EA_REC_LEN(ea) < size) |
| 930 | return 0; |
| 931 | if (!GFS2_EA_IS_STUFFED(ea)) { |
| 932 | error = ea_remove_unstuffed(ip, bh, ea, prev, 1); |
| 933 | if (error) |
| 934 | return error; |
| 935 | } |
| 936 | es->ea_split = 0; |
| 937 | } else if (GFS2_EA_REC_LEN(ea) - GFS2_EA_SIZE(ea) >= size) |
| 938 | es->ea_split = 1; |
| 939 | else |
| 940 | return 0; |
| 941 | |
| 942 | if (stuffed) { |
| 943 | error = ea_set_simple_noalloc(ip, bh, ea, es); |
| 944 | if (error) |
| 945 | return error; |
| 946 | } else { |
| 947 | unsigned int blks; |
| 948 | |
| 949 | es->es_bh = bh; |
| 950 | es->es_ea = ea; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 951 | blks = 2 + DIV_ROUND_UP(es->es_er->er_data_len, |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 952 | GFS2_SB(&ip->i_inode)->sd_jbsize); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 953 | |
| 954 | error = ea_alloc_skeleton(ip, es->es_er, blks, |
| 955 | ea_set_simple_alloc, es); |
| 956 | if (error) |
| 957 | return error; |
| 958 | } |
| 959 | |
| 960 | return 1; |
| 961 | } |
| 962 | |
| 963 | static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er, |
| 964 | void *private) |
| 965 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 966 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 967 | struct buffer_head *indbh, *newbh; |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 968 | __be64 *eablk; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 969 | int error; |
| 970 | int mh_size = sizeof(struct gfs2_meta_header); |
| 971 | |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 972 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 973 | __be64 *end; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 974 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 975 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 976 | &indbh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 977 | if (error) |
| 978 | return error; |
| 979 | |
| 980 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { |
| 981 | error = -EIO; |
| 982 | goto out; |
| 983 | } |
| 984 | |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 985 | eablk = (__be64 *)(indbh->b_data + mh_size); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 986 | end = eablk + sdp->sd_inptrs; |
| 987 | |
| 988 | for (; eablk < end; eablk++) |
| 989 | if (!*eablk) |
| 990 | break; |
| 991 | |
| 992 | if (eablk == end) { |
| 993 | error = -ENOSPC; |
| 994 | goto out; |
| 995 | } |
| 996 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 997 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 998 | } else { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 999 | u64 blk; |
Steven Whitehouse | b45e41d | 2008-02-06 10:11:15 +0000 | [diff] [blame] | 1000 | unsigned int n = 1; |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 1001 | error = gfs2_alloc_block(ip, &blk, &n); |
| 1002 | if (error) |
| 1003 | return error; |
Steven Whitehouse | 5731be5 | 2008-02-01 13:16:55 +0000 | [diff] [blame] | 1004 | gfs2_trans_add_unrevoke(sdp, blk, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1005 | indbh = gfs2_meta_new(ip->i_gl, blk); |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1006 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1007 | gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN); |
| 1008 | gfs2_buffer_clear_tail(indbh, mh_size); |
| 1009 | |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 1010 | eablk = (__be64 *)(indbh->b_data + mh_size); |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 1011 | *eablk = cpu_to_be64(ip->i_eattr); |
| 1012 | ip->i_eattr = blk; |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 1013 | ip->i_diskflags |= GFS2_DIF_EA_INDIRECT; |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 1014 | gfs2_add_inode_blocks(&ip->i_inode, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1015 | |
| 1016 | eablk++; |
| 1017 | } |
| 1018 | |
| 1019 | error = ea_alloc_blk(ip, &newbh); |
| 1020 | if (error) |
| 1021 | goto out; |
| 1022 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1023 | *eablk = cpu_to_be64((u64)newbh->b_blocknr); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1024 | error = ea_write(ip, GFS2_EA_BH2FIRST(newbh), er); |
| 1025 | brelse(newbh); |
| 1026 | if (error) |
| 1027 | goto out; |
| 1028 | |
| 1029 | if (private) |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 1030 | ea_set_remove_stuffed(ip, private); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1031 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1032 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1033 | brelse(indbh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1034 | return error; |
| 1035 | } |
| 1036 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1037 | static int ea_set_i(struct gfs2_inode *ip, int type, const char *name, |
| 1038 | const void *value, size_t size, struct gfs2_ea_location *el) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1039 | { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1040 | struct gfs2_ea_request er; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1041 | struct ea_set es; |
| 1042 | unsigned int blks = 2; |
| 1043 | int error; |
| 1044 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1045 | er.er_type = type; |
| 1046 | er.er_name = name; |
| 1047 | er.er_data = (void *)value; |
| 1048 | er.er_name_len = strlen(name); |
| 1049 | er.er_data_len = size; |
| 1050 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1051 | memset(&es, 0, sizeof(struct ea_set)); |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1052 | es.es_er = &er; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1053 | es.es_el = el; |
| 1054 | |
| 1055 | error = ea_foreach(ip, ea_set_simple, &es); |
| 1056 | if (error > 0) |
| 1057 | return 0; |
| 1058 | if (error) |
| 1059 | return error; |
| 1060 | |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 1061 | if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1062 | blks++; |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1063 | if (GFS2_EAREQ_SIZE_STUFFED(&er) > GFS2_SB(&ip->i_inode)->sd_jbsize) |
| 1064 | blks += DIV_ROUND_UP(er.er_data_len, GFS2_SB(&ip->i_inode)->sd_jbsize); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1065 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1066 | return ea_alloc_skeleton(ip, &er, blks, ea_set_block, el); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1067 | } |
| 1068 | |
| 1069 | static int ea_set_remove_unstuffed(struct gfs2_inode *ip, |
| 1070 | struct gfs2_ea_location *el) |
| 1071 | { |
| 1072 | if (el->el_prev && GFS2_EA2NEXT(el->el_prev) != el->el_ea) { |
| 1073 | el->el_prev = GFS2_EA2NEXT(el->el_prev); |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1074 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1075 | GFS2_EA2NEXT(el->el_prev) == el->el_ea); |
| 1076 | } |
| 1077 | |
Steven Whitehouse | 86d0063 | 2009-09-14 09:50:57 +0100 | [diff] [blame] | 1078 | return ea_remove_unstuffed(ip, el->el_bh, el->el_ea, el->el_prev, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1079 | } |
| 1080 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1081 | static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el) |
| 1082 | { |
| 1083 | struct gfs2_ea_header *ea = el->el_ea; |
| 1084 | struct gfs2_ea_header *prev = el->el_prev; |
| 1085 | struct buffer_head *dibh; |
| 1086 | int error; |
| 1087 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1088 | error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1089 | if (error) |
| 1090 | return error; |
| 1091 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1092 | gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1093 | |
| 1094 | if (prev) { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1095 | u32 len; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1096 | |
| 1097 | len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea); |
| 1098 | prev->ea_rec_len = cpu_to_be32(len); |
| 1099 | |
| 1100 | if (GFS2_EA_IS_LAST(ea)) |
| 1101 | prev->ea_flags |= GFS2_EAFLAG_LAST; |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1102 | } else { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1103 | ea->ea_type = GFS2_EATYPE_UNUSED; |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1104 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1105 | |
| 1106 | error = gfs2_meta_inode_buffer(ip, &dibh); |
| 1107 | if (!error) { |
Steven Whitehouse | 4bd91ba | 2007-06-05 09:39:18 +0100 | [diff] [blame] | 1108 | ip->i_inode.i_ctime = CURRENT_TIME; |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1109 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
Steven Whitehouse | 539e5d6 | 2006-10-31 15:07:05 -0500 | [diff] [blame] | 1110 | gfs2_dinode_out(ip, dibh->b_data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1111 | brelse(dibh); |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 1112 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1113 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1114 | gfs2_trans_end(GFS2_SB(&ip->i_inode)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1115 | |
| 1116 | return error; |
| 1117 | } |
| 1118 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1119 | /** |
| 1120 | * gfs2_xattr_remove - Remove a GFS2 extended attribute |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1121 | * @ip: The inode |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1122 | * @type: The type of the extended attribute |
| 1123 | * @name: The name of the extended attribute |
| 1124 | * |
| 1125 | * This is not called directly by the VFS since we use the (common) |
| 1126 | * scheme of making a "set with NULL data" mean a remove request. Note |
| 1127 | * that this is different from a set with zero length data. |
| 1128 | * |
| 1129 | * Returns: 0, or errno on failure |
| 1130 | */ |
| 1131 | |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1132 | static int gfs2_xattr_remove(struct gfs2_inode *ip, int type, const char *name) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1133 | { |
| 1134 | struct gfs2_ea_location el; |
| 1135 | int error; |
| 1136 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 1137 | if (!ip->i_eattr) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1138 | return -ENODATA; |
| 1139 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1140 | error = gfs2_ea_find(ip, type, name, &el); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1141 | if (error) |
| 1142 | return error; |
| 1143 | if (!el.el_ea) |
| 1144 | return -ENODATA; |
| 1145 | |
| 1146 | if (GFS2_EA_IS_STUFFED(el.el_ea)) |
| 1147 | error = ea_remove_stuffed(ip, &el); |
| 1148 | else |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1149 | error = ea_remove_unstuffed(ip, el.el_bh, el.el_ea, el.el_prev, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1150 | |
| 1151 | brelse(el.el_bh); |
| 1152 | |
| 1153 | return error; |
| 1154 | } |
| 1155 | |
| 1156 | /** |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1157 | * __gfs2_xattr_set - Set (or remove) a GFS2 extended attribute |
| 1158 | * @ip: The inode |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1159 | * @name: The name of the extended attribute |
| 1160 | * @value: The value of the extended attribute (NULL for remove) |
| 1161 | * @size: The size of the @value argument |
| 1162 | * @flags: Create or Replace |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1163 | * @type: The type of the extended attribute |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1164 | * |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1165 | * See gfs2_xattr_remove() for details of the removal of xattrs. |
| 1166 | * |
| 1167 | * Returns: 0 or errno on failure |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1168 | */ |
| 1169 | |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1170 | int __gfs2_xattr_set(struct inode *inode, const char *name, |
| 1171 | const void *value, size_t size, int flags, int type) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1172 | { |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1173 | struct gfs2_inode *ip = GFS2_I(inode); |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1174 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1175 | struct gfs2_ea_location el; |
| 1176 | unsigned int namel = strlen(name); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1177 | int error; |
| 1178 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1179 | if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) |
| 1180 | return -EPERM; |
| 1181 | if (namel > GFS2_EA_MAX_NAME_LEN) |
| 1182 | return -ERANGE; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1183 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1184 | if (value == NULL) |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1185 | return gfs2_xattr_remove(ip, type, name); |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1186 | |
| 1187 | if (ea_check_size(sdp, namel, size)) |
| 1188 | return -ERANGE; |
| 1189 | |
| 1190 | if (!ip->i_eattr) { |
| 1191 | if (flags & XATTR_REPLACE) |
| 1192 | return -ENODATA; |
| 1193 | return ea_init(ip, type, name, value, size); |
| 1194 | } |
| 1195 | |
| 1196 | error = gfs2_ea_find(ip, type, name, &el); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1197 | if (error) |
| 1198 | return error; |
| 1199 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1200 | if (el.el_ea) { |
| 1201 | if (ip->i_diskflags & GFS2_DIF_APPENDONLY) { |
| 1202 | brelse(el.el_bh); |
| 1203 | return -EPERM; |
| 1204 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1205 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1206 | error = -EEXIST; |
| 1207 | if (!(flags & XATTR_CREATE)) { |
| 1208 | int unstuffed = !GFS2_EA_IS_STUFFED(el.el_ea); |
| 1209 | error = ea_set_i(ip, type, name, value, size, &el); |
| 1210 | if (!error && unstuffed) |
| 1211 | ea_set_remove_unstuffed(ip, &el); |
| 1212 | } |
| 1213 | |
| 1214 | brelse(el.el_bh); |
| 1215 | return error; |
| 1216 | } |
| 1217 | |
| 1218 | error = -ENODATA; |
| 1219 | if (!(flags & XATTR_REPLACE)) |
| 1220 | error = ea_set_i(ip, type, name, value, size, NULL); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1221 | |
| 1222 | return error; |
| 1223 | } |
| 1224 | |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1225 | static int gfs2_xattr_set(struct dentry *dentry, const char *name, |
| 1226 | const void *value, size_t size, int flags, int type) |
| 1227 | { |
| 1228 | return __gfs2_xattr_set(dentry->d_inode, name, value, |
| 1229 | size, flags, type); |
| 1230 | } |
| 1231 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1232 | static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip, |
| 1233 | struct gfs2_ea_header *ea, char *data) |
| 1234 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1235 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1236 | struct buffer_head **bh; |
| 1237 | unsigned int amount = GFS2_EA_DATA_LEN(ea); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 1238 | unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize); |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 1239 | __be64 *dataptrs = GFS2_EA2DATAPTRS(ea); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1240 | unsigned int x; |
| 1241 | int error; |
| 1242 | |
Josef Bacik | 16c5f06 | 2008-04-09 09:33:41 -0400 | [diff] [blame] | 1243 | bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1244 | if (!bh) |
| 1245 | return -ENOMEM; |
| 1246 | |
| 1247 | error = gfs2_trans_begin(sdp, nptrs + RES_DINODE, 0); |
| 1248 | if (error) |
| 1249 | goto out; |
| 1250 | |
| 1251 | for (x = 0; x < nptrs; x++) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 1252 | error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0, |
| 1253 | bh + x); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1254 | if (error) { |
| 1255 | while (x--) |
| 1256 | brelse(bh[x]); |
| 1257 | goto fail; |
| 1258 | } |
| 1259 | dataptrs++; |
| 1260 | } |
| 1261 | |
| 1262 | for (x = 0; x < nptrs; x++) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 1263 | error = gfs2_meta_wait(sdp, bh[x]); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1264 | if (error) { |
| 1265 | for (; x < nptrs; x++) |
| 1266 | brelse(bh[x]); |
| 1267 | goto fail; |
| 1268 | } |
| 1269 | if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) { |
| 1270 | for (; x < nptrs; x++) |
| 1271 | brelse(bh[x]); |
| 1272 | error = -EIO; |
| 1273 | goto fail; |
| 1274 | } |
| 1275 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1276 | gfs2_trans_add_bh(ip->i_gl, bh[x], 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1277 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 1278 | memcpy(bh[x]->b_data + sizeof(struct gfs2_meta_header), data, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1279 | (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize); |
| 1280 | |
| 1281 | amount -= sdp->sd_jbsize; |
| 1282 | data += sdp->sd_jbsize; |
| 1283 | |
| 1284 | brelse(bh[x]); |
| 1285 | } |
| 1286 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1287 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1288 | kfree(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1289 | return error; |
| 1290 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1291 | fail: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1292 | gfs2_trans_end(sdp); |
| 1293 | kfree(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1294 | return error; |
| 1295 | } |
| 1296 | |
Steven Whitehouse | 479c427 | 2009-10-02 12:00:00 +0100 | [diff] [blame] | 1297 | int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1298 | { |
Steven Whitehouse | e412bdb | 2009-12-21 13:55:28 +0000 | [diff] [blame] | 1299 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Steven Whitehouse | 479c427 | 2009-10-02 12:00:00 +0100 | [diff] [blame] | 1300 | struct gfs2_ea_location el; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1301 | struct buffer_head *dibh; |
| 1302 | int error; |
| 1303 | |
Steven Whitehouse | 479c427 | 2009-10-02 12:00:00 +0100 | [diff] [blame] | 1304 | error = gfs2_ea_find(ip, GFS2_EATYPE_SYS, GFS2_POSIX_ACL_ACCESS, &el); |
| 1305 | if (error) |
| 1306 | return error; |
| 1307 | |
| 1308 | if (GFS2_EA_IS_STUFFED(el.el_ea)) { |
Steven Whitehouse | e412bdb | 2009-12-21 13:55:28 +0000 | [diff] [blame] | 1309 | error = gfs2_trans_begin(sdp, RES_DINODE + RES_EATTR, 0); |
| 1310 | if (error == 0) { |
| 1311 | gfs2_trans_add_bh(ip->i_gl, el.el_bh, 1); |
| 1312 | memcpy(GFS2_EA2DATA(el.el_ea), data, |
| 1313 | GFS2_EA_DATA_LEN(el.el_ea)); |
| 1314 | } |
| 1315 | } else { |
Steven Whitehouse | 479c427 | 2009-10-02 12:00:00 +0100 | [diff] [blame] | 1316 | error = ea_acl_chmod_unstuffed(ip, el.el_ea, data); |
Steven Whitehouse | e412bdb | 2009-12-21 13:55:28 +0000 | [diff] [blame] | 1317 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1318 | |
Steven Whitehouse | e412bdb | 2009-12-21 13:55:28 +0000 | [diff] [blame] | 1319 | brelse(el.el_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1320 | if (error) |
| 1321 | return error; |
| 1322 | |
| 1323 | error = gfs2_meta_inode_buffer(ip, &dibh); |
| 1324 | if (!error) { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1325 | error = inode_setattr(&ip->i_inode, attr); |
| 1326 | gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error); |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1327 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
Steven Whitehouse | 539e5d6 | 2006-10-31 15:07:05 -0500 | [diff] [blame] | 1328 | gfs2_dinode_out(ip, dibh->b_data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1329 | brelse(dibh); |
| 1330 | } |
| 1331 | |
Steven Whitehouse | e412bdb | 2009-12-21 13:55:28 +0000 | [diff] [blame] | 1332 | gfs2_trans_end(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1333 | return error; |
| 1334 | } |
| 1335 | |
| 1336 | static int ea_dealloc_indirect(struct gfs2_inode *ip) |
| 1337 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1338 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1339 | struct gfs2_rgrp_list rlist; |
| 1340 | struct buffer_head *indbh, *dibh; |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 1341 | __be64 *eablk, *end; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1342 | unsigned int rg_blocks = 0; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1343 | u64 bstart = 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1344 | unsigned int blen = 0; |
| 1345 | unsigned int blks = 0; |
| 1346 | unsigned int x; |
| 1347 | int error; |
| 1348 | |
| 1349 | memset(&rlist, 0, sizeof(struct gfs2_rgrp_list)); |
| 1350 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 1351 | error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &indbh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1352 | if (error) |
| 1353 | return error; |
| 1354 | |
| 1355 | if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) { |
| 1356 | error = -EIO; |
| 1357 | goto out; |
| 1358 | } |
| 1359 | |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 1360 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1361 | end = eablk + sdp->sd_inptrs; |
| 1362 | |
| 1363 | for (; eablk < end; eablk++) { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1364 | u64 bn; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1365 | |
| 1366 | if (!*eablk) |
| 1367 | break; |
| 1368 | bn = be64_to_cpu(*eablk); |
| 1369 | |
| 1370 | if (bstart + blen == bn) |
| 1371 | blen++; |
| 1372 | else { |
| 1373 | if (bstart) |
| 1374 | gfs2_rlist_add(sdp, &rlist, bstart); |
| 1375 | bstart = bn; |
| 1376 | blen = 1; |
| 1377 | } |
| 1378 | blks++; |
| 1379 | } |
| 1380 | if (bstart) |
| 1381 | gfs2_rlist_add(sdp, &rlist, bstart); |
| 1382 | else |
| 1383 | goto out; |
| 1384 | |
Bob Peterson | fe6c991 | 2008-01-28 11:13:02 -0600 | [diff] [blame] | 1385 | gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1386 | |
| 1387 | for (x = 0; x < rlist.rl_rgrps; x++) { |
| 1388 | struct gfs2_rgrpd *rgd; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 1389 | rgd = rlist.rl_ghs[x].gh_gl->gl_object; |
Steven Whitehouse | bb8d8a6 | 2007-06-01 14:11:58 +0100 | [diff] [blame] | 1390 | rg_blocks += rgd->rd_length; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1391 | } |
| 1392 | |
| 1393 | error = gfs2_glock_nq_m(rlist.rl_rgrps, rlist.rl_ghs); |
| 1394 | if (error) |
| 1395 | goto out_rlist_free; |
| 1396 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 1397 | error = gfs2_trans_begin(sdp, rg_blocks + RES_DINODE + RES_INDIRECT + |
| 1398 | RES_STATFS + RES_QUOTA, blks); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1399 | if (error) |
| 1400 | goto out_gunlock; |
| 1401 | |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1402 | gfs2_trans_add_bh(ip->i_gl, indbh, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1403 | |
Al Viro | b44b84d | 2006-10-14 10:46:30 -0400 | [diff] [blame] | 1404 | eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1405 | bstart = 0; |
| 1406 | blen = 0; |
| 1407 | |
| 1408 | for (; eablk < end; eablk++) { |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 1409 | u64 bn; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1410 | |
| 1411 | if (!*eablk) |
| 1412 | break; |
| 1413 | bn = be64_to_cpu(*eablk); |
| 1414 | |
| 1415 | if (bstart + blen == bn) |
| 1416 | blen++; |
| 1417 | else { |
| 1418 | if (bstart) |
| 1419 | gfs2_free_meta(ip, bstart, blen); |
| 1420 | bstart = bn; |
| 1421 | blen = 1; |
| 1422 | } |
| 1423 | |
| 1424 | *eablk = 0; |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 1425 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1426 | } |
| 1427 | if (bstart) |
| 1428 | gfs2_free_meta(ip, bstart, blen); |
| 1429 | |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 1430 | ip->i_diskflags &= ~GFS2_DIF_EA_INDIRECT; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1431 | |
| 1432 | error = gfs2_meta_inode_buffer(ip, &dibh); |
| 1433 | if (!error) { |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1434 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
Steven Whitehouse | 539e5d6 | 2006-10-31 15:07:05 -0500 | [diff] [blame] | 1435 | gfs2_dinode_out(ip, dibh->b_data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1436 | brelse(dibh); |
| 1437 | } |
| 1438 | |
| 1439 | gfs2_trans_end(sdp); |
| 1440 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1441 | out_gunlock: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1442 | gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1443 | out_rlist_free: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1444 | gfs2_rlist_free(&rlist); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1445 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1446 | brelse(indbh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1447 | return error; |
| 1448 | } |
| 1449 | |
| 1450 | static int ea_dealloc_block(struct gfs2_inode *ip) |
| 1451 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1452 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
Steven Whitehouse | 6dbd822 | 2008-01-10 15:18:55 +0000 | [diff] [blame] | 1453 | struct gfs2_alloc *al = ip->i_alloc; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1454 | struct gfs2_rgrpd *rgd; |
| 1455 | struct buffer_head *dibh; |
| 1456 | int error; |
| 1457 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 1458 | rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1459 | if (!rgd) { |
| 1460 | gfs2_consist_inode(ip); |
| 1461 | return -EIO; |
| 1462 | } |
| 1463 | |
| 1464 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, |
| 1465 | &al->al_rgd_gh); |
| 1466 | if (error) |
| 1467 | return error; |
| 1468 | |
Steven Whitehouse | cca195c | 2006-09-05 13:15:18 -0400 | [diff] [blame] | 1469 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_DINODE + RES_STATFS + |
| 1470 | RES_QUOTA, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1471 | if (error) |
| 1472 | goto out_gunlock; |
| 1473 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 1474 | gfs2_free_meta(ip, ip->i_eattr, 1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1475 | |
Steven Whitehouse | 3767ac2 | 2008-11-03 14:28:42 +0000 | [diff] [blame] | 1476 | ip->i_eattr = 0; |
Steven Whitehouse | 77658aa | 2008-02-12 14:17:27 +0000 | [diff] [blame] | 1477 | gfs2_add_inode_blocks(&ip->i_inode, -1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1478 | |
| 1479 | error = gfs2_meta_inode_buffer(ip, &dibh); |
| 1480 | if (!error) { |
Steven Whitehouse | d4e9c4c | 2006-01-18 11:19:28 +0000 | [diff] [blame] | 1481 | gfs2_trans_add_bh(ip->i_gl, dibh, 1); |
Steven Whitehouse | 539e5d6 | 2006-10-31 15:07:05 -0500 | [diff] [blame] | 1482 | gfs2_dinode_out(ip, dibh->b_data); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1483 | brelse(dibh); |
| 1484 | } |
| 1485 | |
| 1486 | gfs2_trans_end(sdp); |
| 1487 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1488 | out_gunlock: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1489 | gfs2_glock_dq_uninit(&al->al_rgd_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1490 | return error; |
| 1491 | } |
| 1492 | |
| 1493 | /** |
| 1494 | * gfs2_ea_dealloc - deallocate the extended attribute fork |
| 1495 | * @ip: the inode |
| 1496 | * |
| 1497 | * Returns: errno |
| 1498 | */ |
| 1499 | |
| 1500 | int gfs2_ea_dealloc(struct gfs2_inode *ip) |
| 1501 | { |
| 1502 | struct gfs2_alloc *al; |
| 1503 | int error; |
| 1504 | |
| 1505 | al = gfs2_alloc_get(ip); |
Cyrill Gorcunov | 182fe5a | 2008-03-03 21:54:21 +0300 | [diff] [blame] | 1506 | if (!al) |
| 1507 | return -ENOMEM; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1508 | |
| 1509 | error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); |
| 1510 | if (error) |
| 1511 | goto out_alloc; |
| 1512 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 1513 | error = gfs2_rindex_hold(GFS2_SB(&ip->i_inode), &al->al_ri_gh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1514 | if (error) |
| 1515 | goto out_quota; |
| 1516 | |
| 1517 | error = ea_foreach(ip, ea_dealloc_unstuffed, NULL); |
| 1518 | if (error) |
| 1519 | goto out_rindex; |
| 1520 | |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 1521 | if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1522 | error = ea_dealloc_indirect(ip); |
| 1523 | if (error) |
| 1524 | goto out_rindex; |
| 1525 | } |
| 1526 | |
| 1527 | error = ea_dealloc_block(ip); |
| 1528 | |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1529 | out_rindex: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1530 | gfs2_glock_dq_uninit(&al->al_ri_gh); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1531 | out_quota: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1532 | gfs2_quota_unhold(ip); |
Steven Whitehouse | a91ea69 | 2006-09-04 12:04:26 -0400 | [diff] [blame] | 1533 | out_alloc: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1534 | gfs2_alloc_put(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1535 | return error; |
| 1536 | } |
| 1537 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1538 | static struct xattr_handler gfs2_xattr_user_handler = { |
| 1539 | .prefix = XATTR_USER_PREFIX, |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1540 | .flags = GFS2_EATYPE_USR, |
| 1541 | .get = gfs2_xattr_get, |
| 1542 | .set = gfs2_xattr_set, |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1543 | }; |
| 1544 | |
| 1545 | static struct xattr_handler gfs2_xattr_security_handler = { |
| 1546 | .prefix = XATTR_SECURITY_PREFIX, |
Christoph Hellwig | 431547b | 2009-11-13 09:52:56 +0000 | [diff] [blame] | 1547 | .flags = GFS2_EATYPE_SECURITY, |
| 1548 | .get = gfs2_xattr_get, |
| 1549 | .set = gfs2_xattr_set, |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1550 | }; |
| 1551 | |
Steven Whitehouse | 40b78a3 | 2009-08-26 18:41:32 +0100 | [diff] [blame] | 1552 | struct xattr_handler *gfs2_xattr_handlers[] = { |
| 1553 | &gfs2_xattr_user_handler, |
| 1554 | &gfs2_xattr_security_handler, |
| 1555 | &gfs2_xattr_system_handler, |
| 1556 | NULL, |
| 1557 | }; |
| 1558 | |