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" |
1da177e4 | 20 | #include "xfs_types.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 LT |
22 | #include "xfs_inum.h" |
23 | #include "xfs_log.h" | |
24 | #include "xfs_trans.h" | |
25 | #include "xfs_sb.h" | |
a844f451 | 26 | #include "xfs_ag.h" |
a844f451 | 27 | #include "xfs_dir2.h" |
1da177e4 LT |
28 | #include "xfs_dmapi.h" |
29 | #include "xfs_mount.h" | |
1da177e4 | 30 | #include "xfs_bmap_btree.h" |
a844f451 | 31 | #include "xfs_alloc_btree.h" |
1da177e4 | 32 | #include "xfs_ialloc_btree.h" |
a844f451 NS |
33 | #include "xfs_dir2_sf.h" |
34 | #include "xfs_attr_sf.h" | |
35 | #include "xfs_dinode.h" | |
36 | #include "xfs_inode.h" | |
37 | #include "xfs_inode_item.h" | |
1da177e4 LT |
38 | #include "xfs_btree.h" |
39 | #include "xfs_error.h" | |
40 | #include "xfs_alloc.h" | |
41 | #include "xfs_ialloc.h" | |
42 | #include "xfs_fsops.h" | |
43 | #include "xfs_itable.h" | |
1da177e4 LT |
44 | #include "xfs_trans_space.h" |
45 | #include "xfs_rtalloc.h" | |
a844f451 | 46 | #include "xfs_rw.h" |
2a82b8be | 47 | #include "xfs_filestream.h" |
0b1b213f | 48 | #include "xfs_trace.h" |
1da177e4 LT |
49 | |
50 | /* | |
51 | * File system operations | |
52 | */ | |
53 | ||
54 | int | |
55 | xfs_fs_geometry( | |
56 | xfs_mount_t *mp, | |
57 | xfs_fsop_geom_t *geo, | |
58 | int new_version) | |
59 | { | |
60 | geo->blocksize = mp->m_sb.sb_blocksize; | |
61 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
62 | geo->agblocks = mp->m_sb.sb_agblocks; | |
63 | geo->agcount = mp->m_sb.sb_agcount; | |
64 | geo->logblocks = mp->m_sb.sb_logblocks; | |
65 | geo->sectsize = mp->m_sb.sb_sectsize; | |
66 | geo->inodesize = mp->m_sb.sb_inodesize; | |
67 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
68 | geo->datablocks = mp->m_sb.sb_dblocks; | |
69 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
70 | geo->rtextents = mp->m_sb.sb_rextents; | |
71 | geo->logstart = mp->m_sb.sb_logstart; | |
72 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
73 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
74 | if (new_version >= 2) { | |
75 | geo->sunit = mp->m_sb.sb_unit; | |
76 | geo->swidth = mp->m_sb.sb_width; | |
77 | } | |
78 | if (new_version >= 3) { | |
79 | geo->version = XFS_FSOP_GEOM_VERSION; | |
80 | geo->flags = | |
62118709 | 81 | (xfs_sb_version_hasattr(&mp->m_sb) ? |
1da177e4 | 82 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | |
62118709 | 83 | (xfs_sb_version_hasnlink(&mp->m_sb) ? |
1da177e4 | 84 | XFS_FSOP_GEOM_FLAGS_NLINK : 0) | |
62118709 | 85 | (xfs_sb_version_hasquota(&mp->m_sb) ? |
1da177e4 | 86 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | |
62118709 | 87 | (xfs_sb_version_hasalign(&mp->m_sb) ? |
1da177e4 | 88 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | |
62118709 | 89 | (xfs_sb_version_hasdalign(&mp->m_sb) ? |
1da177e4 | 90 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | |
62118709 | 91 | (xfs_sb_version_hasshared(&mp->m_sb) ? |
1da177e4 | 92 | XFS_FSOP_GEOM_FLAGS_SHARED : 0) | |
62118709 | 93 | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? |
1da177e4 | 94 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | |
62118709 | 95 | (xfs_sb_version_hasdirv2(&mp->m_sb) ? |
1da177e4 | 96 | XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) | |
62118709 | 97 | (xfs_sb_version_hassector(&mp->m_sb) ? |
d8cc890d | 98 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
189f4bf2 BN |
99 | (xfs_sb_version_hasasciici(&mp->m_sb) ? |
100 | XFS_FSOP_GEOM_FLAGS_DIRV2CI : 0) | | |
92821e2b DC |
101 | (xfs_sb_version_haslazysbcount(&mp->m_sb) ? |
102 | XFS_FSOP_GEOM_FLAGS_LAZYSB : 0) | | |
62118709 | 103 | (xfs_sb_version_hasattr2(&mp->m_sb) ? |
d8cc890d | 104 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0); |
62118709 | 105 | geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ? |
1da177e4 LT |
106 | mp->m_sb.sb_logsectsize : BBSIZE; |
107 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
108 | geo->dirblocksize = mp->m_dirblksize; | |
109 | } | |
110 | if (new_version >= 4) { | |
111 | geo->flags |= | |
62118709 | 112 | (xfs_sb_version_haslogv2(&mp->m_sb) ? |
1da177e4 LT |
113 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); |
114 | geo->logsunit = mp->m_sb.sb_logsunit; | |
115 | } | |
116 | return 0; | |
117 | } | |
118 | ||
119 | static int | |
120 | xfs_growfs_data_private( | |
121 | xfs_mount_t *mp, /* mount point for filesystem */ | |
122 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
123 | { | |
124 | xfs_agf_t *agf; | |
125 | xfs_agi_t *agi; | |
126 | xfs_agnumber_t agno; | |
127 | xfs_extlen_t agsize; | |
128 | xfs_extlen_t tmpsize; | |
129 | xfs_alloc_rec_t *arec; | |
7cc95a82 | 130 | struct xfs_btree_block *block; |
1da177e4 LT |
131 | xfs_buf_t *bp; |
132 | int bucket; | |
133 | int dpct; | |
134 | int error; | |
135 | xfs_agnumber_t nagcount; | |
136 | xfs_agnumber_t nagimax = 0; | |
137 | xfs_rfsblock_t nb, nb_mod; | |
138 | xfs_rfsblock_t new; | |
139 | xfs_rfsblock_t nfree; | |
140 | xfs_agnumber_t oagcount; | |
141 | int pct; | |
1da177e4 LT |
142 | xfs_trans_t *tp; |
143 | ||
144 | nb = in->newblocks; | |
145 | pct = in->imaxpct; | |
146 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
147 | return XFS_ERROR(EINVAL); | |
4cc929ee NS |
148 | if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) |
149 | return error; | |
1da177e4 LT |
150 | dpct = pct - mp->m_sb.sb_imax_pct; |
151 | error = xfs_read_buf(mp, mp->m_ddev_targp, | |
152 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), | |
153 | XFS_FSS_TO_BB(mp, 1), 0, &bp); | |
154 | if (error) | |
155 | return error; | |
156 | ASSERT(bp); | |
157 | xfs_buf_relse(bp); | |
158 | ||
159 | new = nb; /* use new as a temporary here */ | |
160 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
161 | nagcount = new + (nb_mod != 0); | |
162 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
163 | nagcount--; | |
e6da7c9f | 164 | nb = (xfs_rfsblock_t)nagcount * mp->m_sb.sb_agblocks; |
1da177e4 LT |
165 | if (nb < mp->m_sb.sb_dblocks) |
166 | return XFS_ERROR(EINVAL); | |
167 | } | |
168 | new = nb - mp->m_sb.sb_dblocks; | |
169 | oagcount = mp->m_sb.sb_agcount; | |
0cc6eee1 | 170 | |
1c1c6ebc DC |
171 | /* allocate the new per-ag structures */ |
172 | if (nagcount > oagcount) { | |
173 | error = xfs_initialize_perag(mp, nagcount, &nagimax); | |
174 | if (error) | |
175 | return error; | |
1da177e4 | 176 | } |
1c1c6ebc | 177 | |
1da177e4 | 178 | tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); |
84e1e99f | 179 | tp->t_flags |= XFS_TRANS_RESERVE; |
1da177e4 LT |
180 | if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp), |
181 | XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) { | |
182 | xfs_trans_cancel(tp, 0); | |
183 | return error; | |
184 | } | |
185 | ||
1c1c6ebc DC |
186 | /* |
187 | * Write new AG headers to disk. Non-transactional, but written | |
188 | * synchronously so they are completed prior to the growfs transaction | |
189 | * being logged. | |
190 | */ | |
1da177e4 LT |
191 | nfree = 0; |
192 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
193 | /* | |
194 | * AG freelist header block | |
195 | */ | |
196 | bp = xfs_buf_get(mp->m_ddev_targp, | |
6ad112bf CH |
197 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), |
198 | XFS_FSS_TO_BB(mp, 1), XBF_LOCK | XBF_MAPPED); | |
1da177e4 LT |
199 | agf = XFS_BUF_TO_AGF(bp); |
200 | memset(agf, 0, mp->m_sb.sb_sectsize); | |
16259e7d CH |
201 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
202 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
203 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
204 | if (agno == nagcount - 1) |
205 | agsize = | |
206 | nb - | |
207 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
208 | else | |
209 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
210 | agf->agf_length = cpu_to_be32(agsize); |
211 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
212 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
213 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
214 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
1da177e4 | 215 | agf->agf_flfirst = 0; |
16259e7d | 216 | agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1); |
1da177e4 LT |
217 | agf->agf_flcount = 0; |
218 | tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp); | |
16259e7d CH |
219 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
220 | agf->agf_longest = cpu_to_be32(tmpsize); | |
1da177e4 LT |
221 | error = xfs_bwrite(mp, bp); |
222 | if (error) { | |
223 | goto error0; | |
224 | } | |
225 | /* | |
226 | * AG inode header block | |
227 | */ | |
228 | bp = xfs_buf_get(mp->m_ddev_targp, | |
6ad112bf CH |
229 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), |
230 | XFS_FSS_TO_BB(mp, 1), XBF_LOCK | XBF_MAPPED); | |
1da177e4 LT |
231 | agi = XFS_BUF_TO_AGI(bp); |
232 | memset(agi, 0, mp->m_sb.sb_sectsize); | |
16259e7d CH |
233 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
234 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
235 | agi->agi_seqno = cpu_to_be32(agno); | |
236 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 237 | agi->agi_count = 0; |
16259e7d CH |
238 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
239 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 240 | agi->agi_freecount = 0; |
16259e7d CH |
241 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
242 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
1da177e4 | 243 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 244 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
1da177e4 LT |
245 | error = xfs_bwrite(mp, bp); |
246 | if (error) { | |
247 | goto error0; | |
248 | } | |
249 | /* | |
250 | * BNO btree root block | |
251 | */ | |
252 | bp = xfs_buf_get(mp->m_ddev_targp, | |
6ad112bf CH |
253 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), |
254 | BTOBB(mp->m_sb.sb_blocksize), | |
255 | XBF_LOCK | XBF_MAPPED); | |
7cc95a82 | 256 | block = XFS_BUF_TO_BLOCK(bp); |
1da177e4 | 257 | memset(block, 0, mp->m_sb.sb_blocksize); |
16259e7d | 258 | block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC); |
1da177e4 | 259 | block->bb_level = 0; |
16259e7d | 260 | block->bb_numrecs = cpu_to_be16(1); |
7cc95a82 CH |
261 | block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK); |
262 | block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK); | |
136341b4 | 263 | arec = XFS_ALLOC_REC_ADDR(mp, block, 1); |
16259e7d CH |
264 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
265 | arec->ar_blockcount = cpu_to_be32( | |
266 | agsize - be32_to_cpu(arec->ar_startblock)); | |
1da177e4 LT |
267 | error = xfs_bwrite(mp, bp); |
268 | if (error) { | |
269 | goto error0; | |
270 | } | |
271 | /* | |
272 | * CNT btree root block | |
273 | */ | |
274 | bp = xfs_buf_get(mp->m_ddev_targp, | |
6ad112bf CH |
275 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), |
276 | BTOBB(mp->m_sb.sb_blocksize), | |
277 | XBF_LOCK | XBF_MAPPED); | |
7cc95a82 | 278 | block = XFS_BUF_TO_BLOCK(bp); |
1da177e4 | 279 | memset(block, 0, mp->m_sb.sb_blocksize); |
16259e7d | 280 | block->bb_magic = cpu_to_be32(XFS_ABTC_MAGIC); |
1da177e4 | 281 | block->bb_level = 0; |
16259e7d | 282 | block->bb_numrecs = cpu_to_be16(1); |
7cc95a82 CH |
283 | block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK); |
284 | block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK); | |
136341b4 | 285 | arec = XFS_ALLOC_REC_ADDR(mp, block, 1); |
16259e7d CH |
286 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
287 | arec->ar_blockcount = cpu_to_be32( | |
288 | agsize - be32_to_cpu(arec->ar_startblock)); | |
289 | nfree += be32_to_cpu(arec->ar_blockcount); | |
1da177e4 LT |
290 | error = xfs_bwrite(mp, bp); |
291 | if (error) { | |
292 | goto error0; | |
293 | } | |
294 | /* | |
295 | * INO btree root block | |
296 | */ | |
297 | bp = xfs_buf_get(mp->m_ddev_targp, | |
6ad112bf CH |
298 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), |
299 | BTOBB(mp->m_sb.sb_blocksize), | |
300 | XBF_LOCK | XBF_MAPPED); | |
7cc95a82 | 301 | block = XFS_BUF_TO_BLOCK(bp); |
1da177e4 | 302 | memset(block, 0, mp->m_sb.sb_blocksize); |
16259e7d | 303 | block->bb_magic = cpu_to_be32(XFS_IBT_MAGIC); |
1da177e4 LT |
304 | block->bb_level = 0; |
305 | block->bb_numrecs = 0; | |
7cc95a82 CH |
306 | block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK); |
307 | block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK); | |
1da177e4 LT |
308 | error = xfs_bwrite(mp, bp); |
309 | if (error) { | |
310 | goto error0; | |
311 | } | |
312 | } | |
313 | xfs_trans_agblocks_delta(tp, nfree); | |
314 | /* | |
315 | * There are new blocks in the old last a.g. | |
316 | */ | |
317 | if (new) { | |
318 | /* | |
319 | * Change the agi length. | |
320 | */ | |
321 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
322 | if (error) { | |
323 | goto error0; | |
324 | } | |
325 | ASSERT(bp); | |
326 | agi = XFS_BUF_TO_AGI(bp); | |
413d57c9 | 327 | be32_add_cpu(&agi->agi_length, new); |
1da177e4 | 328 | ASSERT(nagcount == oagcount || |
16259e7d | 329 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
330 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
331 | /* | |
332 | * Change agf length. | |
333 | */ | |
334 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
335 | if (error) { | |
336 | goto error0; | |
337 | } | |
338 | ASSERT(bp); | |
339 | agf = XFS_BUF_TO_AGF(bp); | |
413d57c9 | 340 | be32_add_cpu(&agf->agf_length, new); |
16259e7d CH |
341 | ASSERT(be32_to_cpu(agf->agf_length) == |
342 | be32_to_cpu(agi->agi_length)); | |
0b1b213f | 343 | |
0164af51 | 344 | xfs_alloc_log_agf(tp, bp, XFS_AGF_LENGTH); |
1da177e4 LT |
345 | /* |
346 | * Free the new space. | |
347 | */ | |
348 | error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno, | |
16259e7d | 349 | be32_to_cpu(agf->agf_length) - new), new); |
1da177e4 LT |
350 | if (error) { |
351 | goto error0; | |
352 | } | |
353 | } | |
1c1c6ebc DC |
354 | |
355 | /* | |
356 | * Update changed superblock fields transactionally. These are not | |
357 | * seen by the rest of the world until the transaction commit applies | |
358 | * them atomically to the superblock. | |
359 | */ | |
1da177e4 LT |
360 | if (nagcount > oagcount) |
361 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
362 | if (nb > mp->m_sb.sb_dblocks) | |
363 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
364 | nb - mp->m_sb.sb_dblocks); | |
365 | if (nfree) | |
366 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
367 | if (dpct) | |
368 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
1c72bf90 | 369 | error = xfs_trans_commit(tp, 0); |
1c1c6ebc | 370 | if (error) |
1da177e4 | 371 | return error; |
1c1c6ebc | 372 | |
1da177e4 LT |
373 | /* New allocation groups fully initialized, so update mount struct */ |
374 | if (nagimax) | |
375 | mp->m_maxagi = nagimax; | |
376 | if (mp->m_sb.sb_imax_pct) { | |
377 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
378 | do_div(icount, 100); | |
379 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
380 | } else | |
381 | mp->m_maxicount = 0; | |
1c1c6ebc DC |
382 | |
383 | /* update secondary superblocks. */ | |
1da177e4 LT |
384 | for (agno = 1; agno < nagcount; agno++) { |
385 | error = xfs_read_buf(mp, mp->m_ddev_targp, | |
386 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
387 | XFS_FSS_TO_BB(mp, 1), 0, &bp); | |
388 | if (error) { | |
389 | xfs_fs_cmn_err(CE_WARN, mp, | |
390 | "error %d reading secondary superblock for ag %d", | |
391 | error, agno); | |
392 | break; | |
393 | } | |
2bdf7cd0 | 394 | xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS); |
1da177e4 LT |
395 | /* |
396 | * If we get an error writing out the alternate superblocks, | |
397 | * just issue a warning and continue. The real work is | |
398 | * already done and committed. | |
399 | */ | |
400 | if (!(error = xfs_bwrite(mp, bp))) { | |
401 | continue; | |
402 | } else { | |
403 | xfs_fs_cmn_err(CE_WARN, mp, | |
404 | "write error %d updating secondary superblock for ag %d", | |
405 | error, agno); | |
406 | break; /* no point in continuing */ | |
407 | } | |
408 | } | |
409 | return 0; | |
410 | ||
411 | error0: | |
412 | xfs_trans_cancel(tp, XFS_TRANS_ABORT); | |
413 | return error; | |
414 | } | |
415 | ||
416 | static int | |
417 | xfs_growfs_log_private( | |
418 | xfs_mount_t *mp, /* mount point for filesystem */ | |
419 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
420 | { | |
421 | xfs_extlen_t nb; | |
422 | ||
423 | nb = in->newblocks; | |
424 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
425 | return XFS_ERROR(EINVAL); | |
426 | if (nb == mp->m_sb.sb_logblocks && | |
427 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
428 | return XFS_ERROR(EINVAL); | |
429 | /* | |
430 | * Moving the log is hard, need new interfaces to sync | |
431 | * the log first, hold off all activity while moving it. | |
432 | * Can have shorter or longer log in the same space, | |
433 | * or transform internal to external log or vice versa. | |
434 | */ | |
435 | return XFS_ERROR(ENOSYS); | |
436 | } | |
437 | ||
438 | /* | |
439 | * protected versions of growfs function acquire and release locks on the mount | |
440 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
441 | * XFS_IOC_FSGROWFSRT | |
442 | */ | |
443 | ||
444 | ||
445 | int | |
446 | xfs_growfs_data( | |
447 | xfs_mount_t *mp, | |
448 | xfs_growfs_data_t *in) | |
449 | { | |
450 | int error; | |
743bb465 | 451 | |
452 | if (!capable(CAP_SYS_ADMIN)) | |
453 | return XFS_ERROR(EPERM); | |
cc92e7ac | 454 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
455 | return XFS_ERROR(EWOULDBLOCK); |
456 | error = xfs_growfs_data_private(mp, in); | |
cc92e7ac | 457 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
458 | return error; |
459 | } | |
460 | ||
461 | int | |
462 | xfs_growfs_log( | |
463 | xfs_mount_t *mp, | |
464 | xfs_growfs_log_t *in) | |
465 | { | |
466 | int error; | |
743bb465 | 467 | |
468 | if (!capable(CAP_SYS_ADMIN)) | |
469 | return XFS_ERROR(EPERM); | |
cc92e7ac | 470 | if (!mutex_trylock(&mp->m_growlock)) |
1da177e4 LT |
471 | return XFS_ERROR(EWOULDBLOCK); |
472 | error = xfs_growfs_log_private(mp, in); | |
cc92e7ac | 473 | mutex_unlock(&mp->m_growlock); |
1da177e4 LT |
474 | return error; |
475 | } | |
476 | ||
477 | /* | |
478 | * exported through ioctl XFS_IOC_FSCOUNTS | |
479 | */ | |
480 | ||
481 | int | |
482 | xfs_fs_counts( | |
483 | xfs_mount_t *mp, | |
484 | xfs_fsop_counts_t *cnt) | |
485 | { | |
d4d90b57 | 486 | xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); |
3685c2a1 | 487 | spin_lock(&mp->m_sb_lock); |
4be536de | 488 | cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
1da177e4 LT |
489 | cnt->freertx = mp->m_sb.sb_frextents; |
490 | cnt->freeino = mp->m_sb.sb_ifree; | |
491 | cnt->allocino = mp->m_sb.sb_icount; | |
3685c2a1 | 492 | spin_unlock(&mp->m_sb_lock); |
1da177e4 LT |
493 | return 0; |
494 | } | |
495 | ||
496 | /* | |
497 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
498 | * | |
499 | * xfs_reserve_blocks is called to set m_resblks | |
500 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 501 | * is kept in m_resblks_avail. |
1da177e4 LT |
502 | * |
503 | * Reserve the requested number of blocks if available. Otherwise return | |
504 | * as many as possible to satisfy the request. The actual number | |
505 | * reserved are returned in outval | |
506 | * | |
507 | * A null inval pointer indicates that only the current reserved blocks | |
508 | * available should be returned no settings are changed. | |
509 | */ | |
510 | ||
511 | int | |
512 | xfs_reserve_blocks( | |
513 | xfs_mount_t *mp, | |
514 | __uint64_t *inval, | |
515 | xfs_fsop_resblks_t *outval) | |
516 | { | |
dbcabad1 | 517 | __int64_t lcounter, delta, fdblks_delta; |
1da177e4 | 518 | __uint64_t request; |
1da177e4 LT |
519 | |
520 | /* If inval is null, report current values and return */ | |
1da177e4 | 521 | if (inval == (__uint64_t *)NULL) { |
84e1e99f DC |
522 | if (!outval) |
523 | return EINVAL; | |
1da177e4 LT |
524 | outval->resblks = mp->m_resblks; |
525 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 526 | return 0; |
1da177e4 LT |
527 | } |
528 | ||
529 | request = *inval; | |
dbcabad1 DC |
530 | |
531 | /* | |
532 | * With per-cpu counters, this becomes an interesting | |
533 | * problem. we needto work out if we are freeing or allocation | |
534 | * blocks first, then we can do the modification as necessary. | |
535 | * | |
3685c2a1 | 536 | * We do this under the m_sb_lock so that if we are near |
dbcabad1 DC |
537 | * ENOSPC, we will hold out any changes while we work out |
538 | * what to do. This means that the amount of free space can | |
539 | * change while we do this, so we need to retry if we end up | |
540 | * trying to reserve more space than is available. | |
541 | * | |
542 | * We also use the xfs_mod_incore_sb() interface so that we | |
543 | * don't have to care about whether per cpu counter are | |
544 | * enabled, disabled or even compiled in.... | |
545 | */ | |
546 | retry: | |
3685c2a1 | 547 | spin_lock(&mp->m_sb_lock); |
d4d90b57 | 548 | xfs_icsb_sync_counters_locked(mp, 0); |
1da177e4 LT |
549 | |
550 | /* | |
551 | * If our previous reservation was larger than the current value, | |
552 | * then move any unused blocks back to the free pool. | |
553 | */ | |
dbcabad1 | 554 | fdblks_delta = 0; |
1da177e4 LT |
555 | if (mp->m_resblks > request) { |
556 | lcounter = mp->m_resblks_avail - request; | |
557 | if (lcounter > 0) { /* release unused blocks */ | |
dbcabad1 | 558 | fdblks_delta = lcounter; |
1da177e4 LT |
559 | mp->m_resblks_avail -= lcounter; |
560 | } | |
561 | mp->m_resblks = request; | |
562 | } else { | |
4be536de DC |
563 | __int64_t free; |
564 | ||
565 | free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
dbcabad1 DC |
566 | if (!free) |
567 | goto out; /* ENOSPC and fdblks_delta = 0 */ | |
568 | ||
1da177e4 | 569 | delta = request - mp->m_resblks; |
4be536de | 570 | lcounter = free - delta; |
1da177e4 LT |
571 | if (lcounter < 0) { |
572 | /* We can't satisfy the request, just get what we can */ | |
4be536de DC |
573 | mp->m_resblks += free; |
574 | mp->m_resblks_avail += free; | |
dbcabad1 | 575 | fdblks_delta = -free; |
1da177e4 | 576 | } else { |
dbcabad1 | 577 | fdblks_delta = -delta; |
1da177e4 LT |
578 | mp->m_resblks = request; |
579 | mp->m_resblks_avail += delta; | |
580 | } | |
581 | } | |
dbcabad1 | 582 | out: |
84e1e99f DC |
583 | if (outval) { |
584 | outval->resblks = mp->m_resblks; | |
585 | outval->resblks_avail = mp->m_resblks_avail; | |
586 | } | |
3685c2a1 | 587 | spin_unlock(&mp->m_sb_lock); |
dbcabad1 DC |
588 | |
589 | if (fdblks_delta) { | |
590 | /* | |
591 | * If we are putting blocks back here, m_resblks_avail is | |
9da096fd | 592 | * already at its max so this will put it in the free pool. |
dbcabad1 DC |
593 | * |
594 | * If we need space, we'll either succeed in getting it | |
595 | * from the free block count or we'll get an enospc. If | |
596 | * we get a ENOSPC, it means things changed while we were | |
597 | * calculating fdblks_delta and so we should try again to | |
598 | * see if there is anything left to reserve. | |
599 | * | |
600 | * Don't set the reserved flag here - we don't want to reserve | |
601 | * the extra reserve blocks from the reserve..... | |
602 | */ | |
603 | int error; | |
604 | error = xfs_mod_incore_sb(mp, XFS_SBS_FDBLOCKS, fdblks_delta, 0); | |
605 | if (error == ENOSPC) | |
606 | goto retry; | |
607 | } | |
014c2544 | 608 | return 0; |
1da177e4 LT |
609 | } |
610 | ||
c4be0c1d | 611 | int |
421ad134 NS |
612 | xfs_fs_log_dummy( |
613 | xfs_mount_t *mp) | |
e13a73f0 | 614 | { |
421ad134 NS |
615 | xfs_trans_t *tp; |
616 | xfs_inode_t *ip; | |
c4be0c1d | 617 | int error; |
e13a73f0 | 618 | |
80641dc6 | 619 | tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1, KM_SLEEP); |
c4be0c1d TS |
620 | error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0); |
621 | if (error) { | |
e13a73f0 | 622 | xfs_trans_cancel(tp, 0); |
c4be0c1d | 623 | return error; |
e13a73f0 CH |
624 | } |
625 | ||
626 | ip = mp->m_rootip; | |
627 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
628 | ||
629 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
630 | xfs_trans_ihold(tp, ip); | |
631 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
632 | xfs_trans_set_sync(tp); | |
c4be0c1d | 633 | error = xfs_trans_commit(tp, 0); |
e13a73f0 CH |
634 | |
635 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
c4be0c1d | 636 | return error; |
e13a73f0 CH |
637 | } |
638 | ||
1da177e4 LT |
639 | int |
640 | xfs_fs_goingdown( | |
641 | xfs_mount_t *mp, | |
642 | __uint32_t inflags) | |
643 | { | |
644 | switch (inflags) { | |
645 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b267ce99 | 646 | struct super_block *sb = freeze_bdev(mp->m_super->s_bdev); |
1da177e4 | 647 | |
f33c6797 | 648 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 649 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
650 | thaw_bdev(sb->s_bdev, sb); |
651 | } | |
189f4bf2 | 652 | |
1da177e4 LT |
653 | break; |
654 | } | |
655 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 656 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
657 | break; |
658 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
659 | xfs_force_shutdown(mp, |
660 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
661 | break; |
662 | default: | |
663 | return XFS_ERROR(EINVAL); | |
664 | } | |
665 | ||
666 | return 0; | |
667 | } |