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" |
a844f451 | 25 | #include "xfs_ag.h" |
1da177e4 | 26 | #include "xfs_mount.h" |
8f66193c DC |
27 | #include "xfs_da_format.h" |
28 | #include "xfs_da_btree.h" | |
a844f451 | 29 | #include "xfs_inode.h" |
239880ef | 30 | #include "xfs_trans.h" |
a844f451 | 31 | #include "xfs_inode_item.h" |
1da177e4 | 32 | #include "xfs_error.h" |
a4fbe6ab DC |
33 | #include "xfs_btree.h" |
34 | #include "xfs_alloc_btree.h" | |
1da177e4 LT |
35 | #include "xfs_alloc.h" |
36 | #include "xfs_ialloc.h" | |
37 | #include "xfs_fsops.h" | |
38 | #include "xfs_itable.h" | |
1da177e4 LT |
39 | #include "xfs_trans_space.h" |
40 | #include "xfs_rtalloc.h" | |
0b1b213f | 41 | #include "xfs_trace.h" |
239880ef | 42 | #include "xfs_log.h" |
a4fbe6ab DC |
43 | #include "xfs_dinode.h" |
44 | #include "xfs_filestream.h" | |
1da177e4 LT |
45 | |
46 | /* | |
47 | * File system operations | |
48 | */ | |
49 | ||
50 | int | |
51 | xfs_fs_geometry( | |
52 | xfs_mount_t *mp, | |
53 | xfs_fsop_geom_t *geo, | |
54 | int new_version) | |
55 | { | |
c4d0c3b0 DR |
56 | |
57 | memset(geo, 0, sizeof(*geo)); | |
58 | ||
1da177e4 LT |
59 | geo->blocksize = mp->m_sb.sb_blocksize; |
60 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
61 | geo->agblocks = mp->m_sb.sb_agblocks; | |
62 | geo->agcount = mp->m_sb.sb_agcount; | |
63 | geo->logblocks = mp->m_sb.sb_logblocks; | |
64 | geo->sectsize = mp->m_sb.sb_sectsize; | |
65 | geo->inodesize = mp->m_sb.sb_inodesize; | |
66 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
67 | geo->datablocks = mp->m_sb.sb_dblocks; | |
68 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
69 | geo->rtextents = mp->m_sb.sb_rextents; | |
70 | geo->logstart = mp->m_sb.sb_logstart; | |
71 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
72 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
73 | if (new_version >= 2) { | |
74 | geo->sunit = mp->m_sb.sb_unit; | |
75 | geo->swidth = mp->m_sb.sb_width; | |
76 | } | |
77 | if (new_version >= 3) { | |
78 | geo->version = XFS_FSOP_GEOM_VERSION; | |
79 | geo->flags = | |
62118709 | 80 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
1da177e4 | 81 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
62118709 | 82 | (xfs_sb_version_hasnlink(&mp->m_sb) ? |
1da177e4 | 83 | XFS_FSOP_GEOM_FLAGS_NLINK : 0) | |
62118709 | 84 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
1da177e4 | 85 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
62118709 | 86 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
1da177e4 | 87 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
62118709 | 88 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
1da177e4 | 89 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
62118709 | 90 | (xfs_sb_version_hasshared(&mp->m_sb) ? |
1da177e4 | 91 | XFS_FSOP_GEOM_FLAGS_SHARED : 0) | |
62118709 | 92 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
1da177e4 | 93 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
62118709 | 94 | (xfs_sb_version_hasdirv2(&mp->m_sb) ? |
1da177e4 | 95 | XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) | |
62118709 | 96 | (xfs_sb_version_hassector(&mp->m_sb) ? |
d8cc890d | 97 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
189f4bf2 BN |
98 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
99 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | | |
92821e2b DC |
100 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
101 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | | |
62118709 | 102 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
69a58a43 ES |
103 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0) | |
104 | (xfs_sb_version_hasprojid32bit(&mp->m_sb) ? | |
74137fff DC |
105 | XFS_FSOP_GEOM_FLAGS_PROJID32 : 0) | |
106 | (xfs_sb_version_hascrc(&mp->m_sb) ? | |
2900a579 MT |
107 | XFS_FSOP_GEOM_FLAGS_V5SB : 0) | |
108 | (xfs_sb_version_hasftype(&mp->m_sb) ? | |
0c153c1e BF |
109 | XFS_FSOP_GEOM_FLAGS_FTYPE : 0) | |
110 | (xfs_sb_version_hasfinobt(&mp->m_sb) ? | |
111 | XFS_FSOP_GEOM_FLAGS_FINOBT : 0); | |
62118709 | 112 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
1da177e4 LT |
113 | mp->m_sb.sb_logsectsize : BBSIZE; |
114 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
8f66193c | 115 | geo->dirblocksize = mp->m_dir_geo->blksize; |
1da177e4 LT |
116 | } |
117 | if (new_version >= 4) { | |
118 | geo->flags |= | |
62118709 | 119 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
1da177e4 LT |
120 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
121 | geo->logsunit = mp->m_sb.sb_logsunit; | |
122 | } | |
123 | return 0; | |
124 | } | |
125 | ||
fd23683c DC |
126 | static struct xfs_buf * |
127 | xfs_growfs_get_hdr_buf( | |
128 | struct xfs_mount *mp, | |
129 | xfs_daddr_t blkno, | |
130 | size_t numblks, | |
1813dd64 DC |
131 | int flags, |
132 | const struct xfs_buf_ops *ops) | |
fd23683c DC |
133 | { |
134 | struct xfs_buf *bp; | |
135 | ||
136 | bp = xfs_buf_get_uncached(mp->m_ddev_targp, numblks, flags); | |
137 | if (!bp) | |
138 | return NULL; | |
139 | ||
140 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); | |
141 | bp->b_bn = blkno; | |
142 | bp->b_maps[0].bm_bn = blkno; | |
1813dd64 | 143 | bp->b_ops = ops; |
fd23683c DC |
144 | |
145 | return bp; | |
146 | } | |
147 | ||
1da177e4 LT |
148 | static int |
149 | xfs_growfs_data_private( | |
150 | xfs_mount_t *mp, /* mount point for filesystem */ | |
151 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
152 | { | |
153 | xfs_agf_t *agf; | |
de497688 | 154 | struct xfs_agfl *agfl; |
1da177e4 LT |
155 | xfs_agi_t *agi; |
156 | xfs_agnumber_t agno; | |
157 | xfs_extlen_t agsize; | |
158 | xfs_extlen_t tmpsize; | |
159 | xfs_alloc_rec_t *arec; | |
1da177e4 LT |
160 | xfs_buf_t *bp; |
161 | int bucket; | |
162 | int dpct; | |
59e5a0e8 | 163 | int error, saved_error = 0; |
1da177e4 LT |
164 | xfs_agnumber_t nagcount; |
165 | xfs_agnumber_t nagimax = 0; | |
166 | xfs_rfsblock_t nb, nb_mod; | |
167 | xfs_rfsblock_t new; | |
168 | xfs_rfsblock_t nfree; | |
169 | xfs_agnumber_t oagcount; | |
170 | int pct; | |
1da177e4 LT |
171 | xfs_trans_t *tp; |
172 | ||
173 | nb = in->newblocks; | |
174 | pct = in->imaxpct; | |
175 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
176 | return XFS_ERROR(EINVAL); | |
4cc929ee NS |
177 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
178 | return error; | |
1da177e4 | 179 | dpct = pct - mp->m_sb.sb_imax_pct; |
e70b73f8 | 180 | bp = xfs_buf_read_uncached(mp->m_ddev_targp, |
1922c949 | 181 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), |
c3f8fc73 | 182 | XFS_FSS_TO_BB(mp, 1), 0, NULL); |
1922c949 DC |
183 | if (!bp) |
184 | return EIO; | |
eab4e633 | 185 | if (bp->b_error) { |
897366f0 | 186 | error = bp->b_error; |
eab4e633 DC |
187 | xfs_buf_relse(bp); |
188 | return error; | |
189 | } | |
1da177e4 LT |
190 | xfs_buf_relse(bp); |
191 | ||
192 | new = nb; /* use new as a temporary here */ | |
193 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
194 | nagcount = new + (nb_mod != 0); | |
195 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
196 | nagcount--; | |
e6da7c9f | 197 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 LT |
198 | if (nb < mp->m_sb.sb_dblocks) |
199 | return XFS_ERROR(EINVAL); | |
200 | } | |
201 | new = nb - mp->m_sb.sb_dblocks; | |
202 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 203 | |
1c1c6ebc DC |
204 | /* allocate the new per-ag structures */ |
205 | if (nagcount > oagcount) { | |
206 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
207 | if (error) | |
208 | return error; | |
1da177e4 | 209 | } |
1c1c6ebc | 210 | |
1da177e4 | 211 | tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); |
84e1e99f | 212 | tp->t_flags |= XFS_TRANS_RESERVE; |
3d3c8b52 JL |
213 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_growdata, |
214 | XFS_GROWFS_SPACE_RES(mp), 0); | |
215 | if (error) { | |
1da177e4 LT |
216 | xfs_trans_cancel(tp, 0); |
217 | return error; | |
218 | } | |
219 | ||
1c1c6ebc DC |
220 | /* |
221 | * Write new AG headers to disk. Non-transactional, but written | |
222 | * synchronously so they are completed prior to the growfs transaction | |
223 | * being logged. | |
224 | */ | |
1da177e4 LT |
225 | nfree = 0; |
226 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
f94c4457 DC |
227 | __be32 *agfl_bno; |
228 | ||
1da177e4 | 229 | /* |
de497688 | 230 | * AG freespace header block |
1da177e4 | 231 | */ |
fd23683c DC |
232 | bp = xfs_growfs_get_hdr_buf(mp, |
233 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
1813dd64 DC |
234 | XFS_FSS_TO_BB(mp, 1), 0, |
235 | &xfs_agf_buf_ops); | |
b522950f CS |
236 | if (!bp) { |
237 | error = ENOMEM; | |
238 | goto error0; | |
239 | } | |
fd23683c | 240 | |
1da177e4 | 241 | agf = XFS_BUF_TO_AGF(bp); |
16259e7d CH |
242 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
243 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
244 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
245 | if (agno == nagcount - 1) |
246 | agsize = | |
247 | nb - | |
248 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
249 | else | |
250 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
251 | agf->agf_length = cpu_to_be32(agsize); |
252 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
253 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
254 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
255 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
1da177e4 | 256 | agf->agf_flfirst = 0; |
16259e7d | 257 | agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1); |
1da177e4 LT |
258 | agf->agf_flcount = 0; |
259 | tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp); | |
16259e7d CH |
260 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
261 | agf->agf_longest = cpu_to_be32(tmpsize); | |
4e0e6040 DC |
262 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
263 | uuid_copy(&agf->agf_uuid, &mp->m_sb.sb_uuid); | |
264 | ||
c2b006c1 CH |
265 | error = xfs_bwrite(bp); |
266 | xfs_buf_relse(bp); | |
267 | if (error) | |
1da177e4 | 268 | goto error0; |
c2b006c1 | 269 | |
de497688 DC |
270 | /* |
271 | * AG freelist header block | |
272 | */ | |
273 | bp = xfs_growfs_get_hdr_buf(mp, | |
274 | XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)), | |
1813dd64 DC |
275 | XFS_FSS_TO_BB(mp, 1), 0, |
276 | &xfs_agfl_buf_ops); | |
de497688 DC |
277 | if (!bp) { |
278 | error = ENOMEM; | |
279 | goto error0; | |
280 | } | |
281 | ||
282 | agfl = XFS_BUF_TO_AGFL(bp); | |
77c95bba CH |
283 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
284 | agfl->agfl_magicnum = cpu_to_be32(XFS_AGFL_MAGIC); | |
285 | agfl->agfl_seqno = cpu_to_be32(agno); | |
286 | uuid_copy(&agfl->agfl_uuid, &mp->m_sb.sb_uuid); | |
287 | } | |
f94c4457 DC |
288 | |
289 | agfl_bno = XFS_BUF_TO_AGFL_BNO(mp, bp); | |
de497688 | 290 | for (bucket = 0; bucket < XFS_AGFL_SIZE(mp); bucket++) |
f94c4457 | 291 | agfl_bno[bucket] = cpu_to_be32(NULLAGBLOCK); |
de497688 DC |
292 | |
293 | error = xfs_bwrite(bp); | |
294 | xfs_buf_relse(bp); | |
295 | if (error) | |
296 | goto error0; | |
297 | ||
1da177e4 LT |
298 | /* |
299 | * AG inode header block | |
300 | */ | |
fd23683c DC |
301 | bp = xfs_growfs_get_hdr_buf(mp, |
302 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
1813dd64 DC |
303 | XFS_FSS_TO_BB(mp, 1), 0, |
304 | &xfs_agi_buf_ops); | |
b522950f CS |
305 | if (!bp) { |
306 | error = ENOMEM; | |
307 | goto error0; | |
308 | } | |
fd23683c | 309 | |
1da177e4 | 310 | agi = XFS_BUF_TO_AGI(bp); |
16259e7d CH |
311 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
312 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
313 | agi->agi_seqno = cpu_to_be32(agno); | |
314 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 315 | agi->agi_count = 0; |
16259e7d CH |
316 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
317 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 318 | agi->agi_freecount = 0; |
16259e7d CH |
319 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
320 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
983d09ff DC |
321 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
322 | uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_uuid); | |
a3fa516d BF |
323 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { |
324 | agi->agi_free_root = cpu_to_be32(XFS_FIBT_BLOCK(mp)); | |
325 | agi->agi_free_level = cpu_to_be32(1); | |
326 | } | |
1da177e4 | 327 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 328 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
983d09ff | 329 | |
c2b006c1 CH |
330 | error = xfs_bwrite(bp); |
331 | xfs_buf_relse(bp); | |
332 | if (error) | |
1da177e4 | 333 | goto error0; |
c2b006c1 | 334 | |
1da177e4 LT |
335 | /* |
336 | * BNO btree root block | |
337 | */ | |
fd23683c DC |
338 | bp = xfs_growfs_get_hdr_buf(mp, |
339 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
1813dd64 DC |
340 | BTOBB(mp->m_sb.sb_blocksize), 0, |
341 | &xfs_allocbt_buf_ops); | |
fd23683c | 342 | |
b522950f CS |
343 | if (!bp) { |
344 | error = ENOMEM; | |
345 | goto error0; | |
346 | } | |
b64f3a39 | 347 | |
ee1a47ab CH |
348 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
349 | xfs_btree_init_block(mp, bp, XFS_ABTB_CRC_MAGIC, 0, 1, | |
350 | agno, XFS_BTREE_CRC_BLOCKS); | |
351 | else | |
352 | xfs_btree_init_block(mp, bp, XFS_ABTB_MAGIC, 0, 1, | |
353 | agno, 0); | |
354 | ||
b64f3a39 | 355 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
356 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
357 | arec->ar_blockcount = cpu_to_be32( | |
358 | agsize - be32_to_cpu(arec->ar_startblock)); | |
b64f3a39 | 359 | |
c2b006c1 CH |
360 | error = xfs_bwrite(bp); |
361 | xfs_buf_relse(bp); | |
362 | if (error) | |
1da177e4 | 363 | goto error0; |
c2b006c1 | 364 | |
1da177e4 LT |
365 | /* |
366 | * CNT btree root block | |
367 | */ | |
fd23683c DC |
368 | bp = xfs_growfs_get_hdr_buf(mp, |
369 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
1813dd64 DC |
370 | BTOBB(mp->m_sb.sb_blocksize), 0, |
371 | &xfs_allocbt_buf_ops); | |
b522950f CS |
372 | if (!bp) { |
373 | error = ENOMEM; | |
374 | goto error0; | |
375 | } | |
b64f3a39 | 376 | |
ee1a47ab CH |
377 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
378 | xfs_btree_init_block(mp, bp, XFS_ABTC_CRC_MAGIC, 0, 1, | |
379 | agno, XFS_BTREE_CRC_BLOCKS); | |
380 | else | |
381 | xfs_btree_init_block(mp, bp, XFS_ABTC_MAGIC, 0, 1, | |
382 | agno, 0); | |
383 | ||
b64f3a39 | 384 | arec = XFS_ALLOC_REC_ADDR(mp, XFS_BUF_TO_BLOCK(bp), 1); |
16259e7d CH |
385 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
386 | arec->ar_blockcount = cpu_to_be32( | |
387 | agsize - be32_to_cpu(arec->ar_startblock)); | |
388 | nfree += be32_to_cpu(arec->ar_blockcount); | |
b64f3a39 | 389 | |
c2b006c1 CH |
390 | error = xfs_bwrite(bp); |
391 | xfs_buf_relse(bp); | |
392 | if (error) | |
1da177e4 | 393 | goto error0; |
c2b006c1 | 394 | |
1da177e4 LT |
395 | /* |
396 | * INO btree root block | |
397 | */ | |
fd23683c DC |
398 | bp = xfs_growfs_get_hdr_buf(mp, |
399 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
1813dd64 DC |
400 | BTOBB(mp->m_sb.sb_blocksize), 0, |
401 | &xfs_inobt_buf_ops); | |
b522950f CS |
402 | if (!bp) { |
403 | error = ENOMEM; | |
404 | goto error0; | |
405 | } | |
fd23683c | 406 | |
ee1a47ab CH |
407 | if (xfs_sb_version_hascrc(&mp->m_sb)) |
408 | xfs_btree_init_block(mp, bp, XFS_IBT_CRC_MAGIC, 0, 0, | |
409 | agno, XFS_BTREE_CRC_BLOCKS); | |
410 | else | |
411 | xfs_btree_init_block(mp, bp, XFS_IBT_MAGIC, 0, 0, | |
412 | agno, 0); | |
b64f3a39 | 413 | |
c2b006c1 CH |
414 | error = xfs_bwrite(bp); |
415 | xfs_buf_relse(bp); | |
416 | if (error) | |
1da177e4 | 417 | goto error0; |
a3fa516d BF |
418 | |
419 | /* | |
420 | * FINO btree root block | |
421 | */ | |
422 | if (xfs_sb_version_hasfinobt(&mp->m_sb)) { | |
423 | bp = xfs_growfs_get_hdr_buf(mp, | |
424 | XFS_AGB_TO_DADDR(mp, agno, XFS_FIBT_BLOCK(mp)), | |
425 | BTOBB(mp->m_sb.sb_blocksize), 0, | |
426 | &xfs_inobt_buf_ops); | |
427 | if (!bp) { | |
428 | error = ENOMEM; | |
429 | goto error0; | |
430 | } | |
431 | ||
432 | if (xfs_sb_version_hascrc(&mp->m_sb)) | |
433 | xfs_btree_init_block(mp, bp, XFS_FIBT_CRC_MAGIC, | |
434 | 0, 0, agno, | |
435 | XFS_BTREE_CRC_BLOCKS); | |
436 | else | |
437 | xfs_btree_init_block(mp, bp, XFS_FIBT_MAGIC, 0, | |
438 | 0, agno, 0); | |
439 | ||
440 | error = xfs_bwrite(bp); | |
441 | xfs_buf_relse(bp); | |
442 | if (error) | |
443 | goto error0; | |
444 | } | |
445 | ||
1da177e4 LT |
446 | } |
447 | xfs_trans_agblocks_delta(tp, nfree); | |
448 | /* | |
449 | * There are new blocks in the old last a.g. | |
450 | */ | |
451 | if (new) { | |
452 | /* | |
453 | * Change the agi length. | |
454 | */ | |
455 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
456 | if (error) { | |
457 | goto error0; | |
458 | } | |
459 | ASSERT(bp); | |
460 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 461 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 462 | ASSERT(nagcount == oagcount || |
16259e7d | 463 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
464 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
465 | /* | |
466 | * Change agf length. | |
467 | */ | |
468 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
469 | if (error) { | |
470 | goto error0; | |
471 | } | |
472 | ASSERT(bp); | |
473 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 474 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
475 | ASSERT(be32_to_cpu(agf->agf_length) == |
476 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 477 | |
0164af51 | 478 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
1da177e4 LT |
479 | /* |
480 | * Free the new space. | |
481 | */ | |
482 | error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno, | |
16259e7d | 483 | be32_to_cpu(agf->agf_length) - new), new); |
1da177e4 LT |
484 | if (error) { |
485 | goto error0; | |
486 | } | |
487 | } | |
1c1c6ebc DC |
488 | |
489 | /* | |
490 | * Update changed superblock fields transactionally. These are not | |
491 | * seen by the rest of the world until the transaction commit applies | |
492 | * them atomically to the superblock. | |
493 | */ | |
1da177e4 LT |
494 | if (nagcount > oagcount) |
495 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
496 | if (nb > mp->m_sb.sb_dblocks) | |
497 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
498 | nb - mp->m_sb.sb_dblocks); | |
499 | if (nfree) | |
500 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
501 | if (dpct) | |
502 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
1c72bf90 | 503 | error = xfs_trans_commit(tp, 0); |
1c1c6ebc | 504 | if (error) |
1da177e4 | 505 | return error; |
1c1c6ebc | 506 | |
1da177e4 LT |
507 | /* New allocation groups fully initialized, so update mount struct */ |
508 | if (nagimax) | |
509 | mp->m_maxagi = nagimax; | |
510 | if (mp->m_sb.sb_imax_pct) { | |
511 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
512 | do_div(icount, 100); | |
513 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
514 | } else | |
515 | mp->m_maxicount = 0; | |
055388a3 | 516 | xfs_set_low_space_thresholds(mp); |
1c1c6ebc DC |
517 | |
518 | /* update secondary superblocks. */ | |
1da177e4 | 519 | for (agno = 1; agno < nagcount; agno++) { |
1375cb65 DC |
520 | error = 0; |
521 | /* | |
522 | * new secondary superblocks need to be zeroed, not read from | |
523 | * disk as the contents of the new area we are growing into is | |
524 | * completely unknown. | |
525 | */ | |
526 | if (agno < oagcount) { | |
527 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, | |
1da177e4 | 528 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), |
98021821 | 529 | XFS_FSS_TO_BB(mp, 1), 0, &bp, |
1813dd64 | 530 | &xfs_sb_buf_ops); |
1375cb65 DC |
531 | } else { |
532 | bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp, | |
533 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
534 | XFS_FSS_TO_BB(mp, 1), 0); | |
b0f539de | 535 | if (bp) { |
1813dd64 | 536 | bp->b_ops = &xfs_sb_buf_ops; |
1375cb65 | 537 | xfs_buf_zero(bp, 0, BBTOB(bp->b_length)); |
b0f539de | 538 | } else |
1375cb65 DC |
539 | error = ENOMEM; |
540 | } | |
541 | ||
59e5a0e8 ES |
542 | /* |
543 | * If we get an error reading or writing alternate superblocks, | |
544 | * continue. xfs_repair chooses the "best" superblock based | |
545 | * on most matches; if we break early, we'll leave more | |
546 | * superblocks un-updated than updated, and xfs_repair may | |
547 | * pick them over the properly-updated primary. | |
548 | */ | |
1da177e4 | 549 | if (error) { |
53487786 DC |
550 | xfs_warn(mp, |
551 | "error %d reading secondary superblock for ag %d", | |
1da177e4 | 552 | error, agno); |
59e5a0e8 ES |
553 | saved_error = error; |
554 | continue; | |
1da177e4 | 555 | } |
2bdf7cd0 | 556 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS); |
98021821 | 557 | |
c2b006c1 CH |
558 | error = xfs_bwrite(bp); |
559 | xfs_buf_relse(bp); | |
560 | if (error) { | |
53487786 | 561 | xfs_warn(mp, |
1da177e4 LT |
562 | "write error %d updating secondary superblock for ag %d", |
563 | error, agno); | |
59e5a0e8 ES |
564 | saved_error = error; |
565 | continue; | |
1da177e4 LT |
566 | } |
567 | } | |
59e5a0e8 | 568 | return saved_error ? saved_error : error; |
1da177e4 LT |
569 | |
570 | error0: | |
571 | xfs_trans_cancel(tp, XFS_TRANS_ABORT); | |
572 | return error; | |
573 | } | |
574 | ||
575 | static int | |
576 | xfs_growfs_log_private( | |
577 | xfs_mount_t *mp, /* mount point for filesystem */ | |
578 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
579 | { | |
580 | xfs_extlen_t nb; | |
581 | ||
582 | nb = in->newblocks; | |
583 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
584 | return XFS_ERROR(EINVAL); | |
585 | if (nb == mp->m_sb.sb_logblocks && | |
586 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
587 | return XFS_ERROR(EINVAL); | |
588 | /* | |
589 | * Moving the log is hard, need new interfaces to sync | |
590 | * the log first, hold off all activity while moving it. | |
591 | * Can have shorter or longer log in the same space, | |
592 | * or transform internal to external log or vice versa. | |
593 | */ | |
594 | return XFS_ERROR(ENOSYS); | |
595 | } | |
596 | ||
597 | /* | |
598 | * protected versions of growfs function acquire and release locks on the mount | |
599 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
600 | * XFS_IOC_FSGROWFSRT | |
601 | */ | |
602 | ||
603 | ||
604 | int | |
605 | xfs_growfs_data( | |
606 | xfs_mount_t *mp, | |
607 | xfs_growfs_data_t *in) | |
608 | { | |
609 | int error; | |
743bb465 | 610 | |
611 | if (!capable(CAP_SYS_ADMIN)) | |
612 | return XFS_ERROR(EPERM); | |
cc92e7ac | 613 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
614 | return XFS_ERROR(EWOULDBLOCK); |
615 | error = xfs_growfs_data_private(mp, in); | |
cc92e7ac | 616 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
617 | return error; |
618 | } | |
619 | ||
620 | int | |
621 | xfs_growfs_log( | |
622 | xfs_mount_t *mp, | |
623 | xfs_growfs_log_t *in) | |
624 | { | |
625 | int error; | |
743bb465 | 626 | |
627 | if (!capable(CAP_SYS_ADMIN)) | |
628 | return XFS_ERROR(EPERM); | |
cc92e7ac | 629 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
630 | return XFS_ERROR(EWOULDBLOCK); |
631 | error = xfs_growfs_log_private(mp, in); | |
cc92e7ac | 632 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
633 | return error; |
634 | } | |
635 | ||
636 | /* | |
637 | * exported through ioctl XFS_IOC_FSCOUNTS | |
638 | */ | |
639 | ||
640 | int | |
641 | xfs_fs_counts( | |
642 | xfs_mount_t *mp, | |
643 | xfs_fsop_counts_t *cnt) | |
644 | { | |
d4d90b57 | 645 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
3685c2a1 | 646 | spin_lock(&mp->m_sb_lock); |
4be536de | 647 | cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
1da177e4 LT |
648 | cnt->freertx = mp->m_sb.sb_frextents; |
649 | cnt->freeino = mp->m_sb.sb_ifree; | |
650 | cnt->allocino = mp->m_sb.sb_icount; | |
3685c2a1 | 651 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
652 | return 0; |
653 | } | |
654 | ||
655 | /* | |
656 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
657 | * | |
658 | * xfs_reserve_blocks is called to set m_resblks | |
659 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 660 | * is kept in m_resblks_avail. |
1da177e4 LT |
661 | * |
662 | * Reserve the requested number of blocks if available. Otherwise return | |
663 | * as many as possible to satisfy the request. The actual number | |
664 | * reserved are returned in outval | |
665 | * | |
666 | * A null inval pointer indicates that only the current reserved blocks | |
667 | * available should be returned no settings are changed. | |
668 | */ | |
669 | ||
670 | int | |
671 | xfs_reserve_blocks( | |
672 | xfs_mount_t *mp, | |
673 | __uint64_t *inval, | |
674 | xfs_fsop_resblks_t *outval) | |
675 | { | |
dbcabad1 | 676 | __int64_t lcounter, delta, fdblks_delta; |
1da177e4 | 677 | __uint64_t request; |
1da177e4 LT |
678 | |
679 | /* If inval is null, report current values and return */ | |
1da177e4 | 680 | if (inval == (__uint64_t *)NULL) { |
84e1e99f DC |
681 | if (!outval) |
682 | return EINVAL; | |
1da177e4 LT |
683 | outval->resblks = mp->m_resblks; |
684 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 685 | return 0; |
1da177e4 LT |
686 | } |
687 | ||
688 | request = *inval; | |
dbcabad1 DC |
689 | |
690 | /* | |
691 | * With per-cpu counters, this becomes an interesting | |
692 | * problem. we needto work out if we are freeing or allocation | |
693 | * blocks first, then we can do the modification as necessary. | |
694 | * | |
3685c2a1 | 695 | * We do this under the m_sb_lock so that if we are near |
dbcabad1 DC |
696 | * ENOSPC, we will hold out any changes while we work out |
697 | * what to do. This means that the amount of free space can | |
698 | * change while we do this, so we need to retry if we end up | |
699 | * trying to reserve more space than is available. | |
700 | * | |
701 | * We also use the xfs_mod_incore_sb() interface so that we | |
702 | * don't have to care about whether per cpu counter are | |
703 | * enabled, disabled or even compiled in.... | |
704 | */ | |
705 | retry: | |
3685c2a1 | 706 | spin_lock(&mp->m_sb_lock); |
d4d90b57 | 707 | xfs_icsb_sync_counters_locked(mp, 0); |
1da177e4 LT |
708 | |
709 | /* | |
710 | * If our previous reservation was larger than the current value, | |
711 | * then move any unused blocks back to the free pool. | |
712 | */ | |
dbcabad1 | 713 | fdblks_delta = 0; |
1da177e4 LT |
714 | if (mp->m_resblks > request) { |
715 | lcounter = mp->m_resblks_avail - request; | |
716 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 717 | fdblks_delta = lcounter; |
1da177e4 LT |
718 | mp->m_resblks_avail -= lcounter; |
719 | } | |
720 | mp->m_resblks = request; | |
721 | } else { | |
4be536de DC |
722 | __int64_t free; |
723 | ||
724 | free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
dbcabad1 DC |
725 | if (!free) |
726 | goto out; /* ENOSPC and fdblks_delta = 0 */ | |
727 | ||
1da177e4 | 728 | delta = request - mp->m_resblks; |
4be536de | 729 | lcounter = free - delta; |
1da177e4 LT |
730 | if (lcounter < 0) { |
731 | /* We can't satisfy the request, just get what we can */ | |
4be536de DC |
732 | mp->m_resblks += free; |
733 | mp->m_resblks_avail += free; | |
dbcabad1 | 734 | fdblks_delta = -free; |
1da177e4 | 735 | } else { |
dbcabad1 | 736 | fdblks_delta = -delta; |
1da177e4 LT |
737 | mp->m_resblks = request; |
738 | mp->m_resblks_avail += delta; | |
739 | } | |
740 | } | |
dbcabad1 | 741 | out: |
84e1e99f DC |
742 | if (outval) { |
743 | outval->resblks = mp->m_resblks; | |
744 | outval->resblks_avail = mp->m_resblks_avail; | |
745 | } | |
3685c2a1 | 746 | spin_unlock(&mp->m_sb_lock); |
dbcabad1 DC |
747 | |
748 | if (fdblks_delta) { | |
749 | /* | |
750 | * If we are putting blocks back here, m_resblks_avail is | |
9da096fd | 751 | * already at its max so this will put it in the free pool. |
dbcabad1 DC |
752 | * |
753 | * If we need space, we'll either succeed in getting it | |
754 | * from the free block count or we'll get an enospc. If | |
755 | * we get a ENOSPC, it means things changed while we were | |
756 | * calculating fdblks_delta and so we should try again to | |
757 | * see if there is anything left to reserve. | |
758 | * | |
759 | * Don't set the reserved flag here - we don't want to reserve | |
760 | * the extra reserve blocks from the reserve..... | |
761 | */ | |
762 | int error; | |
96540c78 CH |
763 | error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, |
764 | fdblks_delta, 0); | |
dbcabad1 DC |
765 | if (error == ENOSPC) |
766 | goto retry; | |
767 | } | |
014c2544 | 768 | return 0; |
1da177e4 LT |
769 | } |
770 | ||
1a387d3b DC |
771 | /* |
772 | * Dump a transaction into the log that contains no real change. This is needed | |
773 | * to be able to make the log dirty or stamp the current tail LSN into the log | |
774 | * during the covering operation. | |
775 | * | |
776 | * We cannot use an inode here for this - that will push dirty state back up | |
777 | * into the VFS and then periodic inode flushing will prevent log covering from | |
c58efdb4 DC |
778 | * making progress. Hence we log a field in the superblock instead and use a |
779 | * synchronous transaction to ensure the superblock is immediately unpinned | |
780 | * and can be written back. | |
1a387d3b | 781 | */ |
c4be0c1d | 782 | int |
421ad134 | 783 | xfs_fs_log_dummy( |
c58efdb4 | 784 | xfs_mount_t *mp) |
e13a73f0 | 785 | { |
421ad134 | 786 | xfs_trans_t *tp; |
c4be0c1d | 787 | int error; |
e13a73f0 | 788 | |
80641dc6 | 789 | tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP); |
3d3c8b52 | 790 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_sb, 0, 0); |
c4be0c1d | 791 | if (error) { |
e13a73f0 | 792 | xfs_trans_cancel(tp, 0); |
c4be0c1d | 793 | return error; |
e13a73f0 CH |
794 | } |
795 | ||
1a387d3b DC |
796 | /* log the UUID because it is an unchanging field */ |
797 | xfs_mod_sb(tp, XFS_SB_UUID); | |
c58efdb4 | 798 | xfs_trans_set_sync(tp); |
1a387d3b | 799 | return xfs_trans_commit(tp, 0); |
e13a73f0 CH |
800 | } |
801 | ||
1da177e4 LT |
802 | int |
803 | xfs_fs_goingdown( | |
804 | xfs_mount_t *mp, | |
805 | __uint32_t inflags) | |
806 | { | |
807 | switch (inflags) { | |
808 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 809 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 810 | |
f33c6797 | 811 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 812 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
813 | thaw_bdev(sb->s_bdev, sb); |
814 | } | |
189f4bf2 | 815 | |
1da177e4 LT |
816 | break; |
817 | } | |
818 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 819 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
820 | break; |
821 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
822 | xfs_force_shutdown(mp, |
823 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
824 | break; |
825 | default: | |
826 | return XFS_ERROR(EINVAL); | |
827 | } | |
828 | ||
829 | return 0; | |
830 | } | |
2af51f3a DC |
831 | |
832 | /* | |
833 | * Force a shutdown of the filesystem instantly while keeping the filesystem | |
834 | * consistent. We don't do an unmount here; just shutdown the shop, make sure | |
835 | * that absolutely nothing persistent happens to this filesystem after this | |
836 | * point. | |
837 | */ | |
838 | void | |
839 | xfs_do_force_shutdown( | |
840 | xfs_mount_t *mp, | |
841 | int flags, | |
842 | char *fname, | |
843 | int lnnum) | |
844 | { | |
845 | int logerror; | |
846 | ||
847 | logerror = flags & SHUTDOWN_LOG_IO_ERROR; | |
848 | ||
849 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
850 | xfs_notice(mp, | |
851 | "%s(0x%x) called from line %d of file %s. Return address = 0x%p", | |
852 | __func__, flags, lnnum, fname, __return_address); | |
853 | } | |
854 | /* | |
855 | * No need to duplicate efforts. | |
856 | */ | |
857 | if (XFS_FORCED_SHUTDOWN(mp) && !logerror) | |
858 | return; | |
859 | ||
860 | /* | |
861 | * This flags XFS_MOUNT_FS_SHUTDOWN, makes sure that we don't | |
862 | * queue up anybody new on the log reservations, and wakes up | |
863 | * everybody who's sleeping on log reservations to tell them | |
864 | * the bad news. | |
865 | */ | |
866 | if (xfs_log_force_umount(mp, logerror)) | |
867 | return; | |
868 | ||
869 | if (flags & SHUTDOWN_CORRUPT_INCORE) { | |
870 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_CORRUPT, | |
871 | "Corruption of in-memory data detected. Shutting down filesystem"); | |
872 | if (XFS_ERRLEVEL_HIGH <= xfs_error_level) | |
873 | xfs_stack_trace(); | |
874 | } else if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
875 | if (logerror) { | |
876 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_LOGERROR, | |
877 | "Log I/O Error Detected. Shutting down filesystem"); | |
878 | } else if (flags & SHUTDOWN_DEVICE_REQ) { | |
879 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
880 | "All device paths lost. Shutting down filesystem"); | |
881 | } else if (!(flags & SHUTDOWN_REMOTE_REQ)) { | |
882 | xfs_alert_tag(mp, XFS_PTAG_SHUTDOWN_IOERROR, | |
883 | "I/O Error Detected. Shutting down filesystem"); | |
884 | } | |
885 | } | |
886 | if (!(flags & SHUTDOWN_FORCE_UMOUNT)) { | |
887 | xfs_alert(mp, | |
888 | "Please umount the filesystem and rectify the problem(s)"); | |
889 | } | |
890 | } |