Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
70a9883c | 20 | #include "xfs_shared.h" |
239880ef | 21 | #include "xfs_format.h" |
a4fbe6ab | 22 | #include "xfs_log_format.h" |
239880ef | 23 | #include "xfs_trans_resv.h" |
1da177e4 | 24 | #include "xfs_sb.h" |
1da177e4 | 25 | #include "xfs_mount.h" |
8f66193c DC |
26 | #include "xfs_da_format.h" |
27 | #include "xfs_da_btree.h" | |
a844f451 | 28 | #include "xfs_inode.h" |
239880ef | 29 | #include "xfs_trans.h" |
a844f451 | 30 | #include "xfs_inode_item.h" |
1da177e4 | 31 | #include "xfs_error.h" |
a4fbe6ab DC |
32 | #include "xfs_btree.h" |
33 | #include "xfs_alloc_btree.h" | |
1da177e4 LT |
34 | #include "xfs_alloc.h" |
35 | #include "xfs_ialloc.h" | |
36 | #include "xfs_fsops.h" | |
37 | #include "xfs_itable.h" | |
1da177e4 LT |
38 | #include "xfs_trans_space.h" |
39 | #include "xfs_rtalloc.h" | |
0b1b213f | 40 | #include "xfs_trace.h" |
239880ef | 41 | #include "xfs_log.h" |
a4fbe6ab | 42 | #include "xfs_filestream.h" |
1da177e4 LT |
43 | |
44 | /* | |
45 | * File system operations | |
46 | */ | |
47 | ||
48 | int | |
49 | xfs_fs_geometry( | |
50 | xfs_mount_t *mp, | |
51 | xfs_fsop_geom_t *geo, | |
52 | int new_version) | |
53 | { | |
c4d0c3b0 DR |
54 | |
55 | memset(geo, 0, sizeof(*geo)); | |
56 | ||
1da177e4 LT |
57 | geo->blocksize = mp->m_sb.sb_blocksize; |
58 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
59 | geo->agblocks = mp->m_sb.sb_agblocks; | |
60 | geo->agcount = mp->m_sb.sb_agcount; | |
61 | geo->logblocks = mp->m_sb.sb_logblocks; | |
62 | geo->sectsize = mp->m_sb.sb_sectsize; | |
63 | geo->inodesize = mp->m_sb.sb_inodesize; | |
64 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
65 | geo->datablocks = mp->m_sb.sb_dblocks; | |
66 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
67 | geo->rtextents = mp->m_sb.sb_rextents; | |
68 | geo->logstart = mp->m_sb.sb_logstart; | |
69 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
70 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
71 | if (new_version >= 2) { | |
72 | geo->sunit = mp->m_sb.sb_unit; | |
73 | geo->swidth = mp->m_sb.sb_width; | |
74 | } | |
75 | if (new_version >= 3) { | |
76 | geo->version = XFS_FSOP_GEOM_VERSION; | |
263997a6 | 77 | geo->flags = XFS_FSOP_GEOM_FLAGS_NLINK | |
5d074a4f | 78 | XFS_FSOP_GEOM_FLAGS_DIRV2 | |
62118709 | 79 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
1da177e4 | 80 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
62118709 | 81 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
1da177e4 | 82 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
62118709 | 83 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
1da177e4 | 84 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
62118709 | 85 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
1da177e4 | 86 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
62118709 | 87 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
1da177e4 | 88 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
62118709 | 89 | (xfs_sb_version_hassector(&mp->m_sb) ? |
d8cc890d | 90 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
189f4bf2 BN |
91 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
92 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | | |
92821e2b DC |
93 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
94 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | | |
62118709 | 95 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
69a58a43 ES |
96 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) | |
97 | (xfs_sb_version_hasprojid32bit(&mp->m_sb) ? | |
74137fff DC |
98 | XFS_FSOP_GEOM_FLAGS_PROJID32 : 0) | |
99 | (xfs_sb_version_hascrc(&mp->m_sb) ? | |
2900a579 MT |
100 | XFS_FSOP_GEOM_FLAGS_V5SB : 0) | |
101 | (xfs_sb_version_hasftype(&mp->m_sb) ? | |
0c153c1e BF |
102 | XFS_FSOP_GEOM_FLAGS_FTYPE : 0) | |
103 | (xfs_sb_version_hasfinobt(&mp->m_sb) ? | |
502a4e72 BF |
104 | XFS_FSOP_GEOM_FLAGS_FINOBT : 0) | |
105 | (xfs_sb_version_hassparseinodes(&mp->m_sb) ? | |
106 | XFS_FSOP_GEOM_FLAGS_SPINODES : 0); | |
62118709 | 107 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
1da177e4 LT |
108 | mp->m_sb.sb_logsectsize : BBSIZE; |
109 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
8f66193c | 110 | geo->dirblocksize = mp->m_dir_geo->blksize; |
1da177e4 LT |
111 | } |
112 | if (new_version >= 4) { | |
113 | geo->flags |= | |
62118709 | 114 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
1da177e4 LT |
115 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
116 | geo->logsunit = mp->m_sb.sb_logsunit; | |
117 | } | |
118 | return 0; | |
119 | } | |
120 | ||
fd23683c DC |
121 | static struct xfs_buf * |
122 | xfs_growfs_get_hdr_buf( | |
123 | struct xfs_mount *mp, | |
124 | xfs_daddr_t blkno, | |
125 | size_t numblks, | |
1813dd64 DC |
126 | int flags, |
127 | const struct xfs_buf_ops *ops) | |
fd23683c DC |
128 | { |
129 | struct xfs_buf *bp; | |
130 | ||
131 | bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); | |
132 | if (!bp) | |
133 | return NULL; | |
134 | ||
135 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
136 | bp->b_bn = blkno; | |
137 | bp->b_maps[0].bm_bn = blkno; | |
1813dd64 | 138 | bp->b_ops = ops; |
fd23683c DC |
139 | |
140 | return bp; | |
141 | } | |
142 | ||
1da177e4 LT |
143 | static int |
144 | xfs_growfs_data_private( | |
145 | xfs_mount_t *mp, /* mount point for filesystem */ | |
146 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
147 | { | |
148 | xfs_agf_t *agf; | |
de497688 | 149 | struct xfs_agfl *agfl; |
1da177e4 LT |
150 | xfs_agi_t *agi; |
151 | xfs_agnumber_t agno; | |
152 | xfs_extlen_t agsize; | |
153 | xfs_extlen_t tmpsize; | |
154 | xfs_alloc_rec_t *arec; | |
1da177e4 LT |
155 | xfs_buf_t *bp; |
156 | int bucket; | |
157 | int dpct; | |
59e5a0e8 | 158 | int error, saved_error = 0; |
1da177e4 LT |
159 | xfs_agnumber_t nagcount; |
160 | xfs_agnumber_t nagimax = 0; | |
161 | xfs_rfsblock_t nb, nb_mod; | |
162 | xfs_rfsblock_t new; | |
163 | xfs_rfsblock_t nfree; | |
164 | xfs_agnumber_t oagcount; | |
165 | int pct; | |
1da177e4 LT |
166 | xfs_trans_t *tp; |
167 | ||
168 | nb = in->newblocks; | |
169 | pct = in->imaxpct; | |
170 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
2451337d | 171 | return -EINVAL; |
4cc929ee NS |
172 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
173 | return error; | |
1da177e4 | 174 | dpct = pct - mp->m_sb.sb_imax_pct; |
ba372674 | 175 | error = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 176 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
ba372674 DC |
177 | XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); |
178 | if (error) | |
eab4e633 | 179 | return error; |
1da177e4 LT |
180 | xfs_buf_relse(bp); |
181 | ||
182 | new = nb; /* use new as a temporary here */ | |
183 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
184 | nagcount = new + (nb_mod != 0); | |
185 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
186 | nagcount--; | |
e6da7c9f | 187 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 | 188 | if (nb < mp->m_sb.sb_dblocks) |
2451337d | 189 | return -EINVAL; |
1da177e4 LT |
190 | } |
191 | new = nb - mp->m_sb.sb_dblocks; | |
192 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 193 | |
1c1c6ebc DC |
194 | /* allocate the new per-ag structures */ |
195 | if (nagcount > oagcount) { | |
196 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
197 | if (error) | |
198 | return error; | |
1da177e4 | 199 | } |
1c1c6ebc | 200 | |
1da177e4 | 201 | tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); |
84e1e99f | 202 | tp->t_flags |= XFS_TRANS_RESERVE; |
3d3c8b52 JL |
203 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growdata, |
204 | XFS_GROWFS_SPACE_RES(mp), 0); | |
205 | if (error) { | |
4906e215 | 206 | xfs_trans_cancel(tp); |
1da177e4 LT |
207 | return error; |
208 | } | |
209 | ||
1c1c6ebc DC |
210 | /* |
211 | * Write new AG headers to disk. Non-transactional, but written | |
212 | * synchronously so they are completed prior to the growfs transaction | |
213 | * being logged. | |
214 | */ | |
1da177e4 LT |
215 | nfree = 0; |
216 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
f94c4457 DC |
217 | __be32 *agfl_bno; |
218 | ||
1da177e4 | 219 | /* |
de497688 | 220 | * AG freespace header block |
1da177e4 | 221 | */ |
fd23683c DC |
222 | bp = xfs_growfs_get_hdr_buf(mp, |
223 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
1813dd64 DC |
224 | XFS_FSS_TO_BB(mp, 1), 0, |
225 | &xfs_agf_buf_ops); | |
b522950f | 226 | if (!bp) { |
2451337d | 227 | error = -ENOMEM; |
b522950f CS |
228 | goto error0; |
229 | } | |
fd23683c | 230 | |
1da177e4 | 231 | agf = XFS_BUF_TO_AGF(bp); |
16259e7d CH |
232 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
233 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
234 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
235 | if (agno == nagcount - 1) |
236 | agsize = | |
237 | nb - | |
238 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
239 | else | |
240 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
241 | agf->agf_length = cpu_to_be32(agsize); |
242 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
243 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
244 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
245 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
1da177e4 | 246 | agf->agf_flfirst = 0; |
16259e7d | 247 | agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1); |
1da177e4 LT |
248 | agf->agf_flcount = 0; |
249 | tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp); | |
16259e7d CH |
250 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
251 | agf->agf_longest = cpu_to_be32(tmpsize); | |
4e0e6040 | 252 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 253 | uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid); |
4e0e6040 | 254 | |
c2b006c1 CH |
255 | error = xfs_bwrite(bp); |
256 | xfs_buf_relse(bp); | |
257 | if (error) | |
1da177e4 | 258 | goto error0; |
c2b006c1 | 259 | |
de497688 DC |
260 | /* |
261 | * AG freelist header block | |
262 | */ | |
263 | bp = xfs_growfs_get_hdr_buf(mp, | |
264 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
1813dd64 DC |
265 | XFS_FSS_TO_BB(mp, 1), 0, |
266 | &xfs_agfl_buf_ops); | |
de497688 | 267 | if (!bp) { |
2451337d | 268 | error = -ENOMEM; |
de497688 DC |
269 | goto error0; |
270 | } | |
271 | ||
272 | agfl = XFS_BUF_TO_AGFL(bp); | |
77c95bba CH |
273 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
274 | agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); | |
275 | agfl->agfl_seqno = cpu_to_be32(agno); | |
ac383de2 | 276 | uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_meta_uuid); |
77c95bba | 277 | } |
f94c4457 DC |
278 | |
279 | agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); | |
de497688 | 280 | for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++) |
f94c4457 | 281 | agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); |
de497688 DC |
282 | |
283 | error = xfs_bwrite(bp); | |
284 | xfs_buf_relse(bp); | |
285 | if (error) | |
286 | goto error0; | |
287 | ||
1da177e4 LT |
288 | /* |
289 | * AG inode header block | |
290 | */ | |
fd23683c DC |
291 | bp = xfs_growfs_get_hdr_buf(mp, |
292 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
1813dd64 DC |
293 | XFS_FSS_TO_BB(mp, 1), 0, |
294 | &xfs_agi_buf_ops); | |
b522950f | 295 | if (!bp) { |
2451337d | 296 | error = -ENOMEM; |
b522950f CS |
297 | goto error0; |
298 | } | |
fd23683c | 299 | |
1da177e4 | 300 | agi = XFS_BUF_TO_AGI(bp); |
16259e7d CH |
301 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
302 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
303 | agi->agi_seqno = cpu_to_be32(agno); | |
304 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 305 | agi->agi_count = 0; |
16259e7d CH |
306 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
307 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 308 | agi->agi_freecount = 0; |
16259e7d CH |
309 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
310 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
983d09ff | 311 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
ac383de2 | 312 | uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid); |
a3fa516d BF |
313 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { |
314 | agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); | |
315 | agi->agi_free_level = cpu_to_be32(1); | |
316 | } | |
1da177e4 | 317 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 318 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
983d09ff | 319 | |
c2b006c1 CH |
320 | error = xfs_bwrite(bp); |
321 | xfs_buf_relse(bp); | |
322 | if (error) | |
1da177e4 | 323 | goto error0; |
c2b006c1 | 324 | |
1da177e4 LT |
325 | /* |
326 | * BNO btree root block | |
327 | */ | |
fd23683c DC |
328 | bp = xfs_growfs_get_hdr_buf(mp, |
329 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
1813dd64 DC |
330 | BTOBB(mp->m_sb.sb_blocksize), 0, |
331 | &xfs_allocbt_buf_ops); | |
fd23683c | 332 | |
b522950f | 333 | if (!bp) { |
2451337d | 334 | error = -ENOMEM; |
b522950f CS |
335 | goto error0; |
336 | } | |
b64f3a39 | 337 | |
ee1a47ab CH |
338 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
339 | xfs_btree_init_block(mp, bp, XFS_ABTB_CRC_MAGIC, 0, 1, | |
340 | agno, XFS_BTREE_CRC_BLOCKS); | |
341 | else | |
342 | xfs_btree_init_block(mp, bp, XFS_ABTB_MAGIC, 0, 1, | |
343 | agno, 0); | |
344 | ||
b64f3a39 | 345 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
346 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
347 | arec->ar_blockcount = cpu_to_be32( | |
348 | agsize - be32_to_cpu(arec->ar_startblock)); | |
b64f3a39 | 349 | |
c2b006c1 CH |
350 | error = xfs_bwrite(bp); |
351 | xfs_buf_relse(bp); | |
352 | if (error) | |
1da177e4 | 353 | goto error0; |
c2b006c1 | 354 | |
1da177e4 LT |
355 | /* |
356 | * CNT btree root block | |
357 | */ | |
fd23683c DC |
358 | bp = xfs_growfs_get_hdr_buf(mp, |
359 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
1813dd64 DC |
360 | BTOBB(mp->m_sb.sb_blocksize), 0, |
361 | &xfs_allocbt_buf_ops); | |
b522950f | 362 | if (!bp) { |
2451337d | 363 | error = -ENOMEM; |
b522950f CS |
364 | goto error0; |
365 | } | |
b64f3a39 | 366 | |
ee1a47ab CH |
367 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
368 | xfs_btree_init_block(mp, bp, XFS_ABTC_CRC_MAGIC, 0, 1, | |
369 | agno, XFS_BTREE_CRC_BLOCKS); | |
370 | else | |
371 | xfs_btree_init_block(mp, bp, XFS_ABTC_MAGIC, 0, 1, | |
372 | agno, 0); | |
373 | ||
b64f3a39 | 374 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
375 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
376 | arec->ar_blockcount = cpu_to_be32( | |
377 | agsize - be32_to_cpu(arec->ar_startblock)); | |
378 | nfree += be32_to_cpu(arec->ar_blockcount); | |
b64f3a39 | 379 | |
c2b006c1 CH |
380 | error = xfs_bwrite(bp); |
381 | xfs_buf_relse(bp); | |
382 | if (error) | |
1da177e4 | 383 | goto error0; |
c2b006c1 | 384 | |
1da177e4 LT |
385 | /* |
386 | * INO btree root block | |
387 | */ | |
fd23683c DC |
388 | bp = xfs_growfs_get_hdr_buf(mp, |
389 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
1813dd64 DC |
390 | BTOBB(mp->m_sb.sb_blocksize), 0, |
391 | &xfs_inobt_buf_ops); | |
b522950f | 392 | if (!bp) { |
2451337d | 393 | error = -ENOMEM; |
b522950f CS |
394 | goto error0; |
395 | } | |
fd23683c | 396 | |
ee1a47ab CH |
397 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
398 | xfs_btree_init_block(mp, bp, XFS_IBT_CRC_MAGIC, 0, 0, | |
399 | agno, XFS_BTREE_CRC_BLOCKS); | |
400 | else | |
401 | xfs_btree_init_block(mp, bp, XFS_IBT_MAGIC, 0, 0, | |
402 | agno, 0); | |
b64f3a39 | 403 | |
c2b006c1 CH |
404 | error = xfs_bwrite(bp); |
405 | xfs_buf_relse(bp); | |
406 | if (error) | |
1da177e4 | 407 | goto error0; |
a3fa516d BF |
408 | |
409 | /* | |
410 | * FINO btree root block | |
411 | */ | |
412 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { | |
413 | bp = xfs_growfs_get_hdr_buf(mp, | |
414 | XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)), | |
415 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
416 | &xfs_inobt_buf_ops); | |
417 | if (!bp) { | |
2451337d | 418 | error = -ENOMEM; |
a3fa516d BF |
419 | goto error0; |
420 | } | |
421 | ||
422 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
423 | xfs_btree_init_block(mp, bp, XFS_FIBT_CRC_MAGIC, | |
424 | 0, 0, agno, | |
425 | XFS_BTREE_CRC_BLOCKS); | |
426 | else | |
427 | xfs_btree_init_block(mp, bp, XFS_FIBT_MAGIC, 0, | |
428 | 0, agno, 0); | |
429 | ||
430 | error = xfs_bwrite(bp); | |
431 | xfs_buf_relse(bp); | |
432 | if (error) | |
433 | goto error0; | |
434 | } | |
435 | ||
1da177e4 LT |
436 | } |
437 | xfs_trans_agblocks_delta(tp, nfree); | |
438 | /* | |
439 | * There are new blocks in the old last a.g. | |
440 | */ | |
441 | if (new) { | |
442 | /* | |
443 | * Change the agi length. | |
444 | */ | |
445 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
446 | if (error) { | |
447 | goto error0; | |
448 | } | |
449 | ASSERT(bp); | |
450 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 451 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 452 | ASSERT(nagcount == oagcount || |
16259e7d | 453 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
454 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
455 | /* | |
456 | * Change agf length. | |
457 | */ | |
458 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
459 | if (error) { | |
460 | goto error0; | |
461 | } | |
462 | ASSERT(bp); | |
463 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 464 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
465 | ASSERT(be32_to_cpu(agf->agf_length) == |
466 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 467 | |
0164af51 | 468 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
1da177e4 LT |
469 | /* |
470 | * Free the new space. | |
471 | */ | |
472 | error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno, | |
16259e7d | 473 | be32_to_cpu(agf->agf_length) - new), new); |
1da177e4 LT |
474 | if (error) { |
475 | goto error0; | |
476 | } | |
477 | } | |
1c1c6ebc DC |
478 | |
479 | /* | |
480 | * Update changed superblock fields transactionally. These are not | |
481 | * seen by the rest of the world until the transaction commit applies | |
482 | * them atomically to the superblock. | |
483 | */ | |
1da177e4 LT |
484 | if (nagcount > oagcount) |
485 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
486 | if (nb > mp->m_sb.sb_dblocks) | |
487 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
488 | nb - mp->m_sb.sb_dblocks); | |
489 | if (nfree) | |
490 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
491 | if (dpct) | |
492 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
f8079b85 | 493 | xfs_trans_set_sync(tp); |
70393313 | 494 | error = xfs_trans_commit(tp); |
1c1c6ebc | 495 | if (error) |
1da177e4 | 496 | return error; |
1c1c6ebc | 497 | |
1da177e4 LT |
498 | /* New allocation groups fully initialized, so update mount struct */ |
499 | if (nagimax) | |
500 | mp->m_maxagi = nagimax; | |
501 | if (mp->m_sb.sb_imax_pct) { | |
502 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
503 | do_div(icount, 100); | |
504 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
505 | } else | |
506 | mp->m_maxicount = 0; | |
055388a3 | 507 | xfs_set_low_space_thresholds(mp); |
1c1c6ebc DC |
508 | |
509 | /* update secondary superblocks. */ | |
1da177e4 | 510 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
511 | error = 0; |
512 | /* | |
513 | * new secondary superblocks need to be zeroed, not read from | |
514 | * disk as the contents of the new area we are growing into is | |
515 | * completely unknown. | |
516 | */ | |
517 | if (agno < oagcount) { | |
518 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 519 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 | 520 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
1813dd64 | 521 | &xfs_sb_buf_ops); |
1375cb65 DC |
522 | } else { |
523 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
524 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
525 | XFS_FSS_TO_BB(mp, 1), 0); | |
b0f539de | 526 | if (bp) { |
1813dd64 | 527 | bp->b_ops = &xfs_sb_buf_ops; |
1375cb65 | 528 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); |
b0f539de | 529 | } else |
2451337d | 530 | error = -ENOMEM; |
1375cb65 DC |
531 | } |
532 | ||
59e5a0e8 ES |
533 | /* |
534 | * If we get an error reading or writing alternate superblocks, | |
535 | * continue. xfs_repair chooses the "best" superblock based | |
536 | * on most matches; if we break early, we'll leave more | |
537 | * superblocks un-updated than updated, and xfs_repair may | |
538 | * pick them over the properly-updated primary. | |
539 | */ | |
1da177e4 | 540 | if (error) { |
53487786 DC |
541 | xfs_warn(mp, |
542 | "error %d reading secondary superblock for ag %d", | |
1da177e4 | 543 | error, agno); |
59e5a0e8 ES |
544 | saved_error = error; |
545 | continue; | |
1da177e4 | 546 | } |
4d11a402 | 547 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb); |
98021821 | 548 | |
c2b006c1 CH |
549 | error = xfs_bwrite(bp); |
550 | xfs_buf_relse(bp); | |
551 | if (error) { | |
53487786 | 552 | xfs_warn(mp, |
1da177e4 LT |
553 | "write error %d updating secondary superblock for ag %d", |
554 | error, agno); | |
59e5a0e8 ES |
555 | saved_error = error; |
556 | continue; | |
1da177e4 LT |
557 | } |
558 | } | |
59e5a0e8 | 559 | return saved_error ? saved_error : error; |
1da177e4 LT |
560 | |
561 | error0: | |
4906e215 | 562 | xfs_trans_cancel(tp); |
1da177e4 LT |
563 | return error; |
564 | } | |
565 | ||
566 | static int | |
567 | xfs_growfs_log_private( | |
568 | xfs_mount_t *mp, /* mount point for filesystem */ | |
569 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
570 | { | |
571 | xfs_extlen_t nb; | |
572 | ||
573 | nb = in->newblocks; | |
574 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
2451337d | 575 | return -EINVAL; |
1da177e4 LT |
576 | if (nb == mp->m_sb.sb_logblocks && |
577 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
2451337d | 578 | return -EINVAL; |
1da177e4 LT |
579 | /* |
580 | * Moving the log is hard, need new interfaces to sync | |
581 | * the log first, hold off all activity while moving it. | |
582 | * Can have shorter or longer log in the same space, | |
583 | * or transform internal to external log or vice versa. | |
584 | */ | |
2451337d | 585 | return -ENOSYS; |
1da177e4 LT |
586 | } |
587 | ||
588 | /* | |
589 | * protected versions of growfs function acquire and release locks on the mount | |
590 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
591 | * XFS_IOC_FSGROWFSRT | |
592 | */ | |
593 | ||
594 | ||
595 | int | |
596 | xfs_growfs_data( | |
597 | xfs_mount_t *mp, | |
598 | xfs_growfs_data_t *in) | |
599 | { | |
600 | int error; | |
743bb465 | 601 | |
602 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 603 | return -EPERM; |
cc92e7ac | 604 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 605 | return -EWOULDBLOCK; |
1da177e4 | 606 | error = xfs_growfs_data_private(mp, in); |
52785112 CH |
607 | /* |
608 | * Increment the generation unconditionally, the error could be from | |
609 | * updating the secondary superblocks, in which case the new size | |
610 | * is live already. | |
611 | */ | |
612 | mp->m_generation++; | |
cc92e7ac | 613 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
614 | return error; |
615 | } | |
616 | ||
617 | int | |
618 | xfs_growfs_log( | |
619 | xfs_mount_t *mp, | |
620 | xfs_growfs_log_t *in) | |
621 | { | |
622 | int error; | |
743bb465 | 623 | |
624 | if (!capable(CAP_SYS_ADMIN)) | |
2451337d | 625 | return -EPERM; |
cc92e7ac | 626 | if (!mutex_trylock(&mp->m_growlock)) |
2451337d | 627 | return -EWOULDBLOCK; |
1da177e4 | 628 | error = xfs_growfs_log_private(mp, in); |
cc92e7ac | 629 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
630 | return error; |
631 | } | |
632 | ||
633 | /* | |
634 | * exported through ioctl XFS_IOC_FSCOUNTS | |
635 | */ | |
636 | ||
637 | int | |
638 | xfs_fs_counts( | |
639 | xfs_mount_t *mp, | |
640 | xfs_fsop_counts_t *cnt) | |
641 | { | |
501ab323 | 642 | cnt->allocino = percpu_counter_read_positive(&mp->m_icount); |
e88b64ea | 643 | cnt->freeino = percpu_counter_read_positive(&mp->m_ifree); |
0d485ada DC |
644 | cnt->freedata = percpu_counter_read_positive(&mp->m_fdblocks) - |
645 | XFS_ALLOC_SET_ASIDE(mp); | |
501ab323 | 646 | |
3685c2a1 | 647 | spin_lock(&mp->m_sb_lock); |
1da177e4 | 648 | cnt->freertx = mp->m_sb.sb_frextents; |
3685c2a1 | 649 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
650 | return 0; |
651 | } | |
652 | ||
653 | /* | |
654 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
655 | * | |
656 | * xfs_reserve_blocks is called to set m_resblks | |
657 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 658 | * is kept in m_resblks_avail. |
1da177e4 LT |
659 | * |
660 | * Reserve the requested number of blocks if available. Otherwise return | |
661 | * as many as possible to satisfy the request. The actual number | |
662 | * reserved are returned in outval | |
663 | * | |
664 | * A null inval pointer indicates that only the current reserved blocks | |
665 | * available should be returned no settings are changed. | |
666 | */ | |
667 | ||
668 | int | |
669 | xfs_reserve_blocks( | |
670 | xfs_mount_t *mp, | |
671 | __uint64_t *inval, | |
672 | xfs_fsop_resblks_t *outval) | |
673 | { | |
dbcabad1 | 674 | __int64_t lcounter, delta, fdblks_delta; |
1da177e4 | 675 | __uint64_t request; |
1da177e4 LT |
676 | |
677 | /* If inval is null, report current values and return */ | |
1da177e4 | 678 | if (inval == (__uint64_t *)NULL) { |
84e1e99f | 679 | if (!outval) |
2451337d | 680 | return -EINVAL; |
1da177e4 LT |
681 | outval->resblks = mp->m_resblks; |
682 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 683 | return 0; |
1da177e4 LT |
684 | } |
685 | ||
686 | request = *inval; | |
dbcabad1 DC |
687 | |
688 | /* | |
689 | * With per-cpu counters, this becomes an interesting | |
690 | * problem. we needto work out if we are freeing or allocation | |
691 | * blocks first, then we can do the modification as necessary. | |
692 | * | |
3685c2a1 | 693 | * We do this under the m_sb_lock so that if we are near |
dbcabad1 DC |
694 | * ENOSPC, we will hold out any changes while we work out |
695 | * what to do. This means that the amount of free space can | |
696 | * change while we do this, so we need to retry if we end up | |
697 | * trying to reserve more space than is available. | |
dbcabad1 DC |
698 | */ |
699 | retry: | |
3685c2a1 | 700 | spin_lock(&mp->m_sb_lock); |
1da177e4 LT |
701 | |
702 | /* | |
703 | * If our previous reservation was larger than the current value, | |
704 | * then move any unused blocks back to the free pool. | |
705 | */ | |
dbcabad1 | 706 | fdblks_delta = 0; |
1da177e4 LT |
707 | if (mp->m_resblks > request) { |
708 | lcounter = mp->m_resblks_avail - request; | |
709 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 710 | fdblks_delta = lcounter; |
1da177e4 LT |
711 | mp->m_resblks_avail -= lcounter; |
712 | } | |
713 | mp->m_resblks = request; | |
714 | } else { | |
4be536de DC |
715 | __int64_t free; |
716 | ||
0d485ada DC |
717 | free = percpu_counter_sum(&mp->m_fdblocks) - |
718 | XFS_ALLOC_SET_ASIDE(mp); | |
dbcabad1 DC |
719 | if (!free) |
720 | goto out; /* ENOSPC and fdblks_delta = 0 */ | |
721 | ||
1da177e4 | 722 | delta = request - mp->m_resblks; |
4be536de | 723 | lcounter = free - delta; |
1da177e4 LT |
724 | if (lcounter < 0) { |
725 | /* We can't satisfy the request, just get what we can */ | |
4be536de DC |
726 | mp->m_resblks += free; |
727 | mp->m_resblks_avail += free; | |
dbcabad1 | 728 | fdblks_delta = -free; |
1da177e4 | 729 | } else { |
dbcabad1 | 730 | fdblks_delta = -delta; |
1da177e4 LT |
731 | mp->m_resblks = request; |
732 | mp->m_resblks_avail += delta; | |
733 | } | |
734 | } | |
dbcabad1 | 735 | out: |
84e1e99f DC |
736 | if (outval) { |
737 | outval->resblks = mp->m_resblks; | |
738 | outval->resblks_avail = mp->m_resblks_avail; | |
739 | } | |
3685c2a1 | 740 | spin_unlock(&mp->m_sb_lock); |
dbcabad1 DC |
741 | |
742 | if (fdblks_delta) { | |
743 | /* | |
744 | * If we are putting blocks back here, m_resblks_avail is | |
9da096fd | 745 | * already at its max so this will put it in the free pool. |
dbcabad1 DC |
746 | * |
747 | * If we need space, we'll either succeed in getting it | |
748 | * from the free block count or we'll get an enospc. If | |
749 | * we get a ENOSPC, it means things changed while we were | |
750 | * calculating fdblks_delta and so we should try again to | |
751 | * see if there is anything left to reserve. | |
752 | * | |
753 | * Don't set the reserved flag here - we don't want to reserve | |
754 | * the extra reserve blocks from the reserve..... | |
755 | */ | |
756 | int error; | |
0d485ada | 757 | error = xfs_mod_fdblocks(mp, fdblks_delta, 0); |
2451337d | 758 | if (error == -ENOSPC) |
dbcabad1 DC |
759 | goto retry; |
760 | } | |
014c2544 | 761 | return 0; |
1da177e4 LT |
762 | } |
763 | ||
1da177e4 LT |
764 | int |
765 | xfs_fs_goingdown( | |
766 | xfs_mount_t *mp, | |
767 | __uint32_t inflags) | |
768 | { | |
769 | switch (inflags) { | |
770 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 771 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 772 | |
f33c6797 | 773 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 774 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
775 | thaw_bdev(sb->s_bdev, sb); |
776 | } | |
189f4bf2 | 777 | |
1da177e4 LT |
778 | break; |
779 | } | |
780 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 781 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
782 | break; |
783 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
784 | xfs_force_shutdown(mp, |
785 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
786 | break; |
787 | default: | |
2451337d | 788 | return -EINVAL; |
1da177e4 LT |
789 | } |
790 | ||
791 | return 0; | |
792 | } | |
2af51f3a DC |
793 | |
794 | /* | |
795 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
796 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
797 | * that absolutely nothing persistent happens to this filesystem after this | |
798 | * point. | |
799 | */ | |
800 | void | |
801 | xfs_do_force_shutdown( | |
802 | xfs_mount_t *mp, | |
803 | int flags, | |
804 | char *fname, | |
805 | int lnnum) | |
806 | { | |
807 | int logerror; | |
808 | ||
809 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
810 | ||
811 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
812 | xfs_notice(mp, | |
813 | "%s(0x%x) called from line %d of file %s. Return address = 0x%p", | |
814 | __func__, flags, lnnum, fname, __return_address); | |
815 | } | |
816 | /* | |
817 | * No need to duplicate efforts. | |
818 | */ | |
819 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
820 | return; | |
821 | ||
822 | /* | |
823 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
824 | * queue up anybody new on the log reservations, and wakes up | |
825 | * everybody who's sleeping on log reservations to tell them | |
826 | * the bad news. | |
827 | */ | |
828 | if (xfs_log_force_umount(mp, logerror)) | |
829 | return; | |
830 | ||
831 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
832 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
833 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
834 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
835 | xfs_stack_trace(); | |
836 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
837 | if (logerror) { | |
838 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
839 | "Log I/O Error Detected. Shutting down filesystem"); | |
840 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
841 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
842 | "All device paths lost. Shutting down filesystem"); | |
843 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
844 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
845 | "I/O Error Detected. Shutting down filesystem"); | |
846 | } | |
847 | } | |
848 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
849 | xfs_alert(mp, | |
850 | "Please umount the filesystem and rectify the problem(s)"); | |
851 | } | |
852 | } |