Commit | Line | Data |
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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" |
1da177e4 LT |
47 | |
48 | /* | |
49 | * File system operations | |
50 | */ | |
51 | ||
52 | int | |
53 | xfs_fs_geometry( | |
54 | xfs_mount_t *mp, | |
55 | xfs_fsop_geom_t *geo, | |
56 | int new_version) | |
57 | { | |
58 | geo->blocksize = mp->m_sb.sb_blocksize; | |
59 | geo->rtextsize = mp->m_sb.sb_rextsize; | |
60 | geo->agblocks = mp->m_sb.sb_agblocks; | |
61 | geo->agcount = mp->m_sb.sb_agcount; | |
62 | geo->logblocks = mp->m_sb.sb_logblocks; | |
63 | geo->sectsize = mp->m_sb.sb_sectsize; | |
64 | geo->inodesize = mp->m_sb.sb_inodesize; | |
65 | geo->imaxpct = mp->m_sb.sb_imax_pct; | |
66 | geo->datablocks = mp->m_sb.sb_dblocks; | |
67 | geo->rtblocks = mp->m_sb.sb_rblocks; | |
68 | geo->rtextents = mp->m_sb.sb_rextents; | |
69 | geo->logstart = mp->m_sb.sb_logstart; | |
70 | ASSERT(sizeof(geo->uuid)==sizeof(mp->m_sb.sb_uuid)); | |
71 | memcpy(geo->uuid, &mp->m_sb.sb_uuid, sizeof(mp->m_sb.sb_uuid)); | |
72 | if (new_version >= 2) { | |
73 | geo->sunit = mp->m_sb.sb_unit; | |
74 | geo->swidth = mp->m_sb.sb_width; | |
75 | } | |
76 | if (new_version >= 3) { | |
77 | geo->version = XFS_FSOP_GEOM_VERSION; | |
78 | geo->flags = | |
79 | (XFS_SB_VERSION_HASATTR(&mp->m_sb) ? | |
80 | XFS_FSOP_GEOM_FLAGS_ATTR : 0) | | |
81 | (XFS_SB_VERSION_HASNLINK(&mp->m_sb) ? | |
82 | XFS_FSOP_GEOM_FLAGS_NLINK : 0) | | |
83 | (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) ? | |
84 | XFS_FSOP_GEOM_FLAGS_QUOTA : 0) | | |
85 | (XFS_SB_VERSION_HASALIGN(&mp->m_sb) ? | |
86 | XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | | |
87 | (XFS_SB_VERSION_HASDALIGN(&mp->m_sb) ? | |
88 | XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | | |
89 | (XFS_SB_VERSION_HASSHARED(&mp->m_sb) ? | |
90 | XFS_FSOP_GEOM_FLAGS_SHARED : 0) | | |
91 | (XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) ? | |
92 | XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | | |
93 | (XFS_SB_VERSION_HASDIRV2(&mp->m_sb) ? | |
94 | XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) | | |
95 | (XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ? | |
d8cc890d NS |
96 | XFS_FSOP_GEOM_FLAGS_SECTOR : 0) | |
97 | (XFS_SB_VERSION_HASATTR2(&mp->m_sb) ? | |
98 | XFS_FSOP_GEOM_FLAGS_ATTR2 : 0); | |
1da177e4 LT |
99 | geo->logsectsize = XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ? |
100 | mp->m_sb.sb_logsectsize : BBSIZE; | |
101 | geo->rtsectsize = mp->m_sb.sb_blocksize; | |
102 | geo->dirblocksize = mp->m_dirblksize; | |
103 | } | |
104 | if (new_version >= 4) { | |
105 | geo->flags |= | |
106 | (XFS_SB_VERSION_HASLOGV2(&mp->m_sb) ? | |
107 | XFS_FSOP_GEOM_FLAGS_LOGV2 : 0); | |
108 | geo->logsunit = mp->m_sb.sb_logsunit; | |
109 | } | |
110 | return 0; | |
111 | } | |
112 | ||
113 | static int | |
114 | xfs_growfs_data_private( | |
115 | xfs_mount_t *mp, /* mount point for filesystem */ | |
116 | xfs_growfs_data_t *in) /* growfs data input struct */ | |
117 | { | |
118 | xfs_agf_t *agf; | |
119 | xfs_agi_t *agi; | |
120 | xfs_agnumber_t agno; | |
121 | xfs_extlen_t agsize; | |
122 | xfs_extlen_t tmpsize; | |
123 | xfs_alloc_rec_t *arec; | |
124 | xfs_btree_sblock_t *block; | |
125 | xfs_buf_t *bp; | |
126 | int bucket; | |
127 | int dpct; | |
128 | int error; | |
129 | xfs_agnumber_t nagcount; | |
130 | xfs_agnumber_t nagimax = 0; | |
131 | xfs_rfsblock_t nb, nb_mod; | |
132 | xfs_rfsblock_t new; | |
133 | xfs_rfsblock_t nfree; | |
134 | xfs_agnumber_t oagcount; | |
135 | int pct; | |
136 | xfs_sb_t *sbp; | |
137 | xfs_trans_t *tp; | |
138 | ||
139 | nb = in->newblocks; | |
140 | pct = in->imaxpct; | |
141 | if (nb < mp->m_sb.sb_dblocks || pct < 0 || pct > 100) | |
142 | return XFS_ERROR(EINVAL); | |
143 | dpct = pct - mp->m_sb.sb_imax_pct; | |
144 | error = xfs_read_buf(mp, mp->m_ddev_targp, | |
145 | XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), | |
146 | XFS_FSS_TO_BB(mp, 1), 0, &bp); | |
147 | if (error) | |
148 | return error; | |
149 | ASSERT(bp); | |
150 | xfs_buf_relse(bp); | |
151 | ||
152 | new = nb; /* use new as a temporary here */ | |
153 | nb_mod = do_div(new, mp->m_sb.sb_agblocks); | |
154 | nagcount = new + (nb_mod != 0); | |
155 | if (nb_mod && nb_mod < XFS_MIN_AG_BLOCKS) { | |
156 | nagcount--; | |
157 | nb = nagcount * mp->m_sb.sb_agblocks; | |
158 | if (nb < mp->m_sb.sb_dblocks) | |
159 | return XFS_ERROR(EINVAL); | |
160 | } | |
161 | new = nb - mp->m_sb.sb_dblocks; | |
162 | oagcount = mp->m_sb.sb_agcount; | |
163 | if (nagcount > oagcount) { | |
164 | down_write(&mp->m_peraglock); | |
165 | mp->m_perag = kmem_realloc(mp->m_perag, | |
166 | sizeof(xfs_perag_t) * nagcount, | |
167 | sizeof(xfs_perag_t) * oagcount, | |
168 | KM_SLEEP); | |
169 | memset(&mp->m_perag[oagcount], 0, | |
170 | (nagcount - oagcount) * sizeof(xfs_perag_t)); | |
171 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
c11e2c36 | 172 | nagimax = xfs_initialize_perag(XFS_MTOVFS(mp), mp, nagcount); |
1da177e4 LT |
173 | up_write(&mp->m_peraglock); |
174 | } | |
175 | tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); | |
176 | if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp), | |
177 | XFS_GROWDATA_LOG_RES(mp), 0, 0, 0))) { | |
178 | xfs_trans_cancel(tp, 0); | |
179 | return error; | |
180 | } | |
181 | ||
182 | nfree = 0; | |
183 | for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { | |
184 | /* | |
185 | * AG freelist header block | |
186 | */ | |
187 | bp = xfs_buf_get(mp->m_ddev_targp, | |
188 | XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)), | |
189 | XFS_FSS_TO_BB(mp, 1), 0); | |
190 | agf = XFS_BUF_TO_AGF(bp); | |
191 | memset(agf, 0, mp->m_sb.sb_sectsize); | |
16259e7d CH |
192 | agf->agf_magicnum = cpu_to_be32(XFS_AGF_MAGIC); |
193 | agf->agf_versionnum = cpu_to_be32(XFS_AGF_VERSION); | |
194 | agf->agf_seqno = cpu_to_be32(agno); | |
1da177e4 LT |
195 | if (agno == nagcount - 1) |
196 | agsize = | |
197 | nb - | |
198 | (agno * (xfs_rfsblock_t)mp->m_sb.sb_agblocks); | |
199 | else | |
200 | agsize = mp->m_sb.sb_agblocks; | |
16259e7d CH |
201 | agf->agf_length = cpu_to_be32(agsize); |
202 | agf->agf_roots[XFS_BTNUM_BNOi] = cpu_to_be32(XFS_BNO_BLOCK(mp)); | |
203 | agf->agf_roots[XFS_BTNUM_CNTi] = cpu_to_be32(XFS_CNT_BLOCK(mp)); | |
204 | agf->agf_levels[XFS_BTNUM_BNOi] = cpu_to_be32(1); | |
205 | agf->agf_levels[XFS_BTNUM_CNTi] = cpu_to_be32(1); | |
1da177e4 | 206 | agf->agf_flfirst = 0; |
16259e7d | 207 | agf->agf_fllast = cpu_to_be32(XFS_AGFL_SIZE(mp) - 1); |
1da177e4 LT |
208 | agf->agf_flcount = 0; |
209 | tmpsize = agsize - XFS_PREALLOC_BLOCKS(mp); | |
16259e7d CH |
210 | agf->agf_freeblks = cpu_to_be32(tmpsize); |
211 | agf->agf_longest = cpu_to_be32(tmpsize); | |
1da177e4 LT |
212 | error = xfs_bwrite(mp, bp); |
213 | if (error) { | |
214 | goto error0; | |
215 | } | |
216 | /* | |
217 | * AG inode header block | |
218 | */ | |
219 | bp = xfs_buf_get(mp->m_ddev_targp, | |
220 | XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)), | |
221 | XFS_FSS_TO_BB(mp, 1), 0); | |
222 | agi = XFS_BUF_TO_AGI(bp); | |
223 | memset(agi, 0, mp->m_sb.sb_sectsize); | |
16259e7d CH |
224 | agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC); |
225 | agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION); | |
226 | agi->agi_seqno = cpu_to_be32(agno); | |
227 | agi->agi_length = cpu_to_be32(agsize); | |
1da177e4 | 228 | agi->agi_count = 0; |
16259e7d CH |
229 | agi->agi_root = cpu_to_be32(XFS_IBT_BLOCK(mp)); |
230 | agi->agi_level = cpu_to_be32(1); | |
1da177e4 | 231 | agi->agi_freecount = 0; |
16259e7d CH |
232 | agi->agi_newino = cpu_to_be32(NULLAGINO); |
233 | agi->agi_dirino = cpu_to_be32(NULLAGINO); | |
1da177e4 | 234 | for (bucket = 0; bucket < XFS_AGI_UNLINKED_BUCKETS; bucket++) |
16259e7d | 235 | agi->agi_unlinked[bucket] = cpu_to_be32(NULLAGINO); |
1da177e4 LT |
236 | error = xfs_bwrite(mp, bp); |
237 | if (error) { | |
238 | goto error0; | |
239 | } | |
240 | /* | |
241 | * BNO btree root block | |
242 | */ | |
243 | bp = xfs_buf_get(mp->m_ddev_targp, | |
244 | XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)), | |
245 | BTOBB(mp->m_sb.sb_blocksize), 0); | |
246 | block = XFS_BUF_TO_SBLOCK(bp); | |
247 | memset(block, 0, mp->m_sb.sb_blocksize); | |
16259e7d | 248 | block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC); |
1da177e4 | 249 | block->bb_level = 0; |
16259e7d CH |
250 | block->bb_numrecs = cpu_to_be16(1); |
251 | block->bb_leftsib = cpu_to_be32(NULLAGBLOCK); | |
252 | block->bb_rightsib = cpu_to_be32(NULLAGBLOCK); | |
1da177e4 LT |
253 | arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc, |
254 | block, 1, mp->m_alloc_mxr[0]); | |
16259e7d CH |
255 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
256 | arec->ar_blockcount = cpu_to_be32( | |
257 | agsize - be32_to_cpu(arec->ar_startblock)); | |
1da177e4 LT |
258 | error = xfs_bwrite(mp, bp); |
259 | if (error) { | |
260 | goto error0; | |
261 | } | |
262 | /* | |
263 | * CNT btree root block | |
264 | */ | |
265 | bp = xfs_buf_get(mp->m_ddev_targp, | |
266 | XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)), | |
267 | BTOBB(mp->m_sb.sb_blocksize), 0); | |
268 | block = XFS_BUF_TO_SBLOCK(bp); | |
269 | memset(block, 0, mp->m_sb.sb_blocksize); | |
16259e7d | 270 | block->bb_magic = cpu_to_be32(XFS_ABTC_MAGIC); |
1da177e4 | 271 | block->bb_level = 0; |
16259e7d CH |
272 | block->bb_numrecs = cpu_to_be16(1); |
273 | block->bb_leftsib = cpu_to_be32(NULLAGBLOCK); | |
274 | block->bb_rightsib = cpu_to_be32(NULLAGBLOCK); | |
1da177e4 LT |
275 | arec = XFS_BTREE_REC_ADDR(mp->m_sb.sb_blocksize, xfs_alloc, |
276 | block, 1, mp->m_alloc_mxr[0]); | |
16259e7d CH |
277 | arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp)); |
278 | arec->ar_blockcount = cpu_to_be32( | |
279 | agsize - be32_to_cpu(arec->ar_startblock)); | |
280 | nfree += be32_to_cpu(arec->ar_blockcount); | |
1da177e4 LT |
281 | error = xfs_bwrite(mp, bp); |
282 | if (error) { | |
283 | goto error0; | |
284 | } | |
285 | /* | |
286 | * INO btree root block | |
287 | */ | |
288 | bp = xfs_buf_get(mp->m_ddev_targp, | |
289 | XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)), | |
290 | BTOBB(mp->m_sb.sb_blocksize), 0); | |
291 | block = XFS_BUF_TO_SBLOCK(bp); | |
292 | memset(block, 0, mp->m_sb.sb_blocksize); | |
16259e7d | 293 | block->bb_magic = cpu_to_be32(XFS_IBT_MAGIC); |
1da177e4 LT |
294 | block->bb_level = 0; |
295 | block->bb_numrecs = 0; | |
16259e7d CH |
296 | block->bb_leftsib = cpu_to_be32(NULLAGBLOCK); |
297 | block->bb_rightsib = cpu_to_be32(NULLAGBLOCK); | |
1da177e4 LT |
298 | error = xfs_bwrite(mp, bp); |
299 | if (error) { | |
300 | goto error0; | |
301 | } | |
302 | } | |
303 | xfs_trans_agblocks_delta(tp, nfree); | |
304 | /* | |
305 | * There are new blocks in the old last a.g. | |
306 | */ | |
307 | if (new) { | |
308 | /* | |
309 | * Change the agi length. | |
310 | */ | |
311 | error = xfs_ialloc_read_agi(mp, tp, agno, &bp); | |
312 | if (error) { | |
313 | goto error0; | |
314 | } | |
315 | ASSERT(bp); | |
316 | agi = XFS_BUF_TO_AGI(bp); | |
16259e7d | 317 | be32_add(&agi->agi_length, new); |
1da177e4 | 318 | ASSERT(nagcount == oagcount || |
16259e7d | 319 | be32_to_cpu(agi->agi_length) == mp->m_sb.sb_agblocks); |
1da177e4 LT |
320 | xfs_ialloc_log_agi(tp, bp, XFS_AGI_LENGTH); |
321 | /* | |
322 | * Change agf length. | |
323 | */ | |
324 | error = xfs_alloc_read_agf(mp, tp, agno, 0, &bp); | |
325 | if (error) { | |
326 | goto error0; | |
327 | } | |
328 | ASSERT(bp); | |
329 | agf = XFS_BUF_TO_AGF(bp); | |
16259e7d CH |
330 | be32_add(&agf->agf_length, new); |
331 | ASSERT(be32_to_cpu(agf->agf_length) == | |
332 | be32_to_cpu(agi->agi_length)); | |
1da177e4 LT |
333 | /* |
334 | * Free the new space. | |
335 | */ | |
336 | error = xfs_free_extent(tp, XFS_AGB_TO_FSB(mp, agno, | |
16259e7d | 337 | be32_to_cpu(agf->agf_length) - new), new); |
1da177e4 LT |
338 | if (error) { |
339 | goto error0; | |
340 | } | |
341 | } | |
342 | if (nagcount > oagcount) | |
343 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); | |
344 | if (nb > mp->m_sb.sb_dblocks) | |
345 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_DBLOCKS, | |
346 | nb - mp->m_sb.sb_dblocks); | |
347 | if (nfree) | |
348 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, nfree); | |
349 | if (dpct) | |
350 | xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); | |
351 | error = xfs_trans_commit(tp, 0, NULL); | |
352 | if (error) { | |
353 | return error; | |
354 | } | |
355 | /* New allocation groups fully initialized, so update mount struct */ | |
356 | if (nagimax) | |
357 | mp->m_maxagi = nagimax; | |
358 | if (mp->m_sb.sb_imax_pct) { | |
359 | __uint64_t icount = mp->m_sb.sb_dblocks * mp->m_sb.sb_imax_pct; | |
360 | do_div(icount, 100); | |
361 | mp->m_maxicount = icount << mp->m_sb.sb_inopblog; | |
362 | } else | |
363 | mp->m_maxicount = 0; | |
364 | for (agno = 1; agno < nagcount; agno++) { | |
365 | error = xfs_read_buf(mp, mp->m_ddev_targp, | |
366 | XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), | |
367 | XFS_FSS_TO_BB(mp, 1), 0, &bp); | |
368 | if (error) { | |
369 | xfs_fs_cmn_err(CE_WARN, mp, | |
370 | "error %d reading secondary superblock for ag %d", | |
371 | error, agno); | |
372 | break; | |
373 | } | |
374 | sbp = XFS_BUF_TO_SBP(bp); | |
375 | xfs_xlatesb(sbp, &mp->m_sb, -1, XFS_SB_ALL_BITS); | |
376 | /* | |
377 | * If we get an error writing out the alternate superblocks, | |
378 | * just issue a warning and continue. The real work is | |
379 | * already done and committed. | |
380 | */ | |
381 | if (!(error = xfs_bwrite(mp, bp))) { | |
382 | continue; | |
383 | } else { | |
384 | xfs_fs_cmn_err(CE_WARN, mp, | |
385 | "write error %d updating secondary superblock for ag %d", | |
386 | error, agno); | |
387 | break; /* no point in continuing */ | |
388 | } | |
389 | } | |
390 | return 0; | |
391 | ||
392 | error0: | |
393 | xfs_trans_cancel(tp, XFS_TRANS_ABORT); | |
394 | return error; | |
395 | } | |
396 | ||
397 | static int | |
398 | xfs_growfs_log_private( | |
399 | xfs_mount_t *mp, /* mount point for filesystem */ | |
400 | xfs_growfs_log_t *in) /* growfs log input struct */ | |
401 | { | |
402 | xfs_extlen_t nb; | |
403 | ||
404 | nb = in->newblocks; | |
405 | if (nb < XFS_MIN_LOG_BLOCKS || nb < XFS_B_TO_FSB(mp, XFS_MIN_LOG_BYTES)) | |
406 | return XFS_ERROR(EINVAL); | |
407 | if (nb == mp->m_sb.sb_logblocks && | |
408 | in->isint == (mp->m_sb.sb_logstart != 0)) | |
409 | return XFS_ERROR(EINVAL); | |
410 | /* | |
411 | * Moving the log is hard, need new interfaces to sync | |
412 | * the log first, hold off all activity while moving it. | |
413 | * Can have shorter or longer log in the same space, | |
414 | * or transform internal to external log or vice versa. | |
415 | */ | |
416 | return XFS_ERROR(ENOSYS); | |
417 | } | |
418 | ||
419 | /* | |
420 | * protected versions of growfs function acquire and release locks on the mount | |
421 | * point - exported through ioctls: XFS_IOC_FSGROWFSDATA, XFS_IOC_FSGROWFSLOG, | |
422 | * XFS_IOC_FSGROWFSRT | |
423 | */ | |
424 | ||
425 | ||
426 | int | |
427 | xfs_growfs_data( | |
428 | xfs_mount_t *mp, | |
429 | xfs_growfs_data_t *in) | |
430 | { | |
431 | int error; | |
432 | if (!cpsema(&mp->m_growlock)) | |
433 | return XFS_ERROR(EWOULDBLOCK); | |
434 | error = xfs_growfs_data_private(mp, in); | |
435 | vsema(&mp->m_growlock); | |
436 | return error; | |
437 | } | |
438 | ||
439 | int | |
440 | xfs_growfs_log( | |
441 | xfs_mount_t *mp, | |
442 | xfs_growfs_log_t *in) | |
443 | { | |
444 | int error; | |
445 | if (!cpsema(&mp->m_growlock)) | |
446 | return XFS_ERROR(EWOULDBLOCK); | |
447 | error = xfs_growfs_log_private(mp, in); | |
448 | vsema(&mp->m_growlock); | |
449 | return error; | |
450 | } | |
451 | ||
452 | /* | |
453 | * exported through ioctl XFS_IOC_FSCOUNTS | |
454 | */ | |
455 | ||
456 | int | |
457 | xfs_fs_counts( | |
458 | xfs_mount_t *mp, | |
459 | xfs_fsop_counts_t *cnt) | |
460 | { | |
461 | unsigned long s; | |
462 | ||
8d280b98 | 463 | xfs_icsb_sync_counters_lazy(mp); |
1da177e4 | 464 | s = XFS_SB_LOCK(mp); |
4be536de | 465 | cnt->freedata = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); |
1da177e4 LT |
466 | cnt->freertx = mp->m_sb.sb_frextents; |
467 | cnt->freeino = mp->m_sb.sb_ifree; | |
468 | cnt->allocino = mp->m_sb.sb_icount; | |
469 | XFS_SB_UNLOCK(mp, s); | |
470 | return 0; | |
471 | } | |
472 | ||
473 | /* | |
474 | * exported through ioctl XFS_IOC_SET_RESBLKS & XFS_IOC_GET_RESBLKS | |
475 | * | |
476 | * xfs_reserve_blocks is called to set m_resblks | |
477 | * in the in-core mount table. The number of unused reserved blocks | |
c41564b5 | 478 | * is kept in m_resblks_avail. |
1da177e4 LT |
479 | * |
480 | * Reserve the requested number of blocks if available. Otherwise return | |
481 | * as many as possible to satisfy the request. The actual number | |
482 | * reserved are returned in outval | |
483 | * | |
484 | * A null inval pointer indicates that only the current reserved blocks | |
485 | * available should be returned no settings are changed. | |
486 | */ | |
487 | ||
488 | int | |
489 | xfs_reserve_blocks( | |
490 | xfs_mount_t *mp, | |
491 | __uint64_t *inval, | |
492 | xfs_fsop_resblks_t *outval) | |
493 | { | |
494 | __int64_t lcounter, delta; | |
495 | __uint64_t request; | |
496 | unsigned long s; | |
497 | ||
498 | /* If inval is null, report current values and return */ | |
499 | ||
500 | if (inval == (__uint64_t *)NULL) { | |
501 | outval->resblks = mp->m_resblks; | |
502 | outval->resblks_avail = mp->m_resblks_avail; | |
014c2544 | 503 | return 0; |
1da177e4 LT |
504 | } |
505 | ||
506 | request = *inval; | |
507 | s = XFS_SB_LOCK(mp); | |
508 | ||
509 | /* | |
510 | * If our previous reservation was larger than the current value, | |
511 | * then move any unused blocks back to the free pool. | |
512 | */ | |
513 | ||
514 | if (mp->m_resblks > request) { | |
515 | lcounter = mp->m_resblks_avail - request; | |
516 | if (lcounter > 0) { /* release unused blocks */ | |
517 | mp->m_sb.sb_fdblocks += lcounter; | |
518 | mp->m_resblks_avail -= lcounter; | |
519 | } | |
520 | mp->m_resblks = request; | |
521 | } else { | |
4be536de DC |
522 | __int64_t free; |
523 | ||
524 | free = mp->m_sb.sb_fdblocks - XFS_ALLOC_SET_ASIDE(mp); | |
1da177e4 | 525 | delta = request - mp->m_resblks; |
4be536de | 526 | lcounter = free - delta; |
1da177e4 LT |
527 | if (lcounter < 0) { |
528 | /* We can't satisfy the request, just get what we can */ | |
4be536de DC |
529 | mp->m_resblks += free; |
530 | mp->m_resblks_avail += free; | |
531 | mp->m_sb.sb_fdblocks = XFS_ALLOC_SET_ASIDE(mp); | |
1da177e4 | 532 | } else { |
4be536de DC |
533 | mp->m_sb.sb_fdblocks = |
534 | lcounter + XFS_ALLOC_SET_ASIDE(mp); | |
1da177e4 LT |
535 | mp->m_resblks = request; |
536 | mp->m_resblks_avail += delta; | |
537 | } | |
538 | } | |
539 | ||
540 | outval->resblks = mp->m_resblks; | |
541 | outval->resblks_avail = mp->m_resblks_avail; | |
542 | XFS_SB_UNLOCK(mp, s); | |
014c2544 | 543 | return 0; |
1da177e4 LT |
544 | } |
545 | ||
e13a73f0 | 546 | void |
421ad134 NS |
547 | xfs_fs_log_dummy( |
548 | xfs_mount_t *mp) | |
e13a73f0 | 549 | { |
421ad134 NS |
550 | xfs_trans_t *tp; |
551 | xfs_inode_t *ip; | |
e13a73f0 CH |
552 | |
553 | tp = _xfs_trans_alloc(mp, XFS_TRANS_DUMMY1); | |
e13a73f0 CH |
554 | if (xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0)) { |
555 | xfs_trans_cancel(tp, 0); | |
556 | return; | |
557 | } | |
558 | ||
559 | ip = mp->m_rootip; | |
560 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
561 | ||
562 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
563 | xfs_trans_ihold(tp, ip); | |
564 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
565 | xfs_trans_set_sync(tp); | |
566 | xfs_trans_commit(tp, 0, NULL); | |
567 | ||
568 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
569 | } | |
570 | ||
1da177e4 LT |
571 | int |
572 | xfs_fs_goingdown( | |
573 | xfs_mount_t *mp, | |
574 | __uint32_t inflags) | |
575 | { | |
576 | switch (inflags) { | |
577 | case XFS_FSOP_GOING_FLAGS_DEFAULT: { | |
b83bd138 | 578 | struct bhv_vfs *vfsp = XFS_MTOVFS(mp); |
1da177e4 LT |
579 | struct super_block *sb = freeze_bdev(vfsp->vfs_super->s_bdev); |
580 | ||
f33c6797 | 581 | if (sb && !IS_ERR(sb)) { |
7d04a335 | 582 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
583 | thaw_bdev(sb->s_bdev, sb); |
584 | } | |
585 | ||
586 | break; | |
587 | } | |
588 | case XFS_FSOP_GOING_FLAGS_LOGFLUSH: | |
7d04a335 | 589 | xfs_force_shutdown(mp, SHUTDOWN_FORCE_UMOUNT); |
1da177e4 LT |
590 | break; |
591 | case XFS_FSOP_GOING_FLAGS_NOLOGFLUSH: | |
7d04a335 NS |
592 | xfs_force_shutdown(mp, |
593 | SHUTDOWN_FORCE_UMOUNT | SHUTDOWN_LOG_IO_ERROR); | |
1da177e4 LT |
594 | break; |
595 | default: | |
596 | return XFS_ERROR(EINVAL); | |
597 | } | |
598 | ||
599 | return 0; | |
600 | } |