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Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2003,2005 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 | 22 | #include "xfs_log.h" |
a844f451 | 23 | #include "xfs_inum.h" |
1da177e4 LT |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" | |
26 | #include "xfs_ag.h" | |
1da177e4 LT |
27 | #include "xfs_dir2.h" |
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" |
1da177e4 | 33 | #include "xfs_dir2_sf.h" |
a844f451 | 34 | #include "xfs_attr_sf.h" |
1da177e4 | 35 | #include "xfs_dinode.h" |
1da177e4 | 36 | #include "xfs_inode.h" |
a844f451 | 37 | #include "xfs_inode_item.h" |
1da177e4 | 38 | #include "xfs_alloc.h" |
a844f451 NS |
39 | #include "xfs_btree.h" |
40 | #include "xfs_ialloc.h" | |
41 | #include "xfs_itable.h" | |
1da177e4 LT |
42 | #include "xfs_bmap.h" |
43 | #include "xfs_error.h" | |
44 | #include "xfs_quota.h" | |
45 | ||
46 | #if defined(XFS_BMBT_TRACE) | |
47 | ktrace_t *xfs_bmbt_trace_buf; | |
48 | #endif | |
49 | ||
50 | /* | |
51 | * Prototypes for internal btree functions. | |
52 | */ | |
53 | ||
54 | ||
55 | STATIC int xfs_bmbt_killroot(xfs_btree_cur_t *); | |
56 | STATIC void xfs_bmbt_log_keys(xfs_btree_cur_t *, xfs_buf_t *, int, int); | |
57 | STATIC void xfs_bmbt_log_ptrs(xfs_btree_cur_t *, xfs_buf_t *, int, int); | |
58 | STATIC int xfs_bmbt_lshift(xfs_btree_cur_t *, int, int *); | |
59 | STATIC int xfs_bmbt_rshift(xfs_btree_cur_t *, int, int *); | |
60 | STATIC int xfs_bmbt_split(xfs_btree_cur_t *, int, xfs_fsblock_t *, | |
8801bb99 | 61 | __uint64_t *, xfs_btree_cur_t **, int *); |
1da177e4 LT |
62 | STATIC int xfs_bmbt_updkey(xfs_btree_cur_t *, xfs_bmbt_key_t *, int); |
63 | ||
64 | ||
65 | #if defined(XFS_BMBT_TRACE) | |
66 | ||
67 | static char ARGS[] = "args"; | |
68 | static char ENTRY[] = "entry"; | |
69 | static char ERROR[] = "error"; | |
70 | #undef EXIT | |
71 | static char EXIT[] = "exit"; | |
72 | ||
73 | /* | |
74 | * Add a trace buffer entry for the arguments given to the routine, | |
75 | * generic form. | |
76 | */ | |
77 | STATIC void | |
78 | xfs_bmbt_trace_enter( | |
79 | char *func, | |
80 | xfs_btree_cur_t *cur, | |
81 | char *s, | |
82 | int type, | |
83 | int line, | |
84 | __psunsigned_t a0, | |
85 | __psunsigned_t a1, | |
86 | __psunsigned_t a2, | |
87 | __psunsigned_t a3, | |
88 | __psunsigned_t a4, | |
89 | __psunsigned_t a5, | |
90 | __psunsigned_t a6, | |
91 | __psunsigned_t a7, | |
92 | __psunsigned_t a8, | |
93 | __psunsigned_t a9, | |
94 | __psunsigned_t a10) | |
95 | { | |
96 | xfs_inode_t *ip; | |
97 | int whichfork; | |
98 | ||
99 | ip = cur->bc_private.b.ip; | |
100 | whichfork = cur->bc_private.b.whichfork; | |
101 | ktrace_enter(xfs_bmbt_trace_buf, | |
102 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), | |
103 | (void *)func, (void *)s, (void *)ip, (void *)cur, | |
104 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, | |
105 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, | |
106 | (void *)a8, (void *)a9, (void *)a10); | |
107 | ASSERT(ip->i_btrace); | |
108 | ktrace_enter(ip->i_btrace, | |
109 | (void *)((__psint_t)type | (whichfork << 8) | (line << 16)), | |
110 | (void *)func, (void *)s, (void *)ip, (void *)cur, | |
111 | (void *)a0, (void *)a1, (void *)a2, (void *)a3, | |
112 | (void *)a4, (void *)a5, (void *)a6, (void *)a7, | |
113 | (void *)a8, (void *)a9, (void *)a10); | |
114 | } | |
115 | /* | |
116 | * Add a trace buffer entry for arguments, for a buffer & 1 integer arg. | |
117 | */ | |
118 | STATIC void | |
119 | xfs_bmbt_trace_argbi( | |
120 | char *func, | |
121 | xfs_btree_cur_t *cur, | |
122 | xfs_buf_t *b, | |
123 | int i, | |
124 | int line) | |
125 | { | |
126 | xfs_bmbt_trace_enter(func, cur, ARGS, XFS_BMBT_KTRACE_ARGBI, line, | |
127 | (__psunsigned_t)b, i, 0, 0, | |
128 | 0, 0, 0, 0, | |
129 | 0, 0, 0); | |
130 | } | |
131 | ||
132 | /* | |
133 | * Add a trace buffer entry for arguments, for a buffer & 2 integer args. | |
134 | */ | |
135 | STATIC void | |
136 | xfs_bmbt_trace_argbii( | |
137 | char *func, | |
138 | xfs_btree_cur_t *cur, | |
139 | xfs_buf_t *b, | |
140 | int i0, | |
141 | int i1, | |
142 | int line) | |
143 | { | |
144 | xfs_bmbt_trace_enter(func, cur, ARGS, XFS_BMBT_KTRACE_ARGBII, line, | |
145 | (__psunsigned_t)b, i0, i1, 0, | |
146 | 0, 0, 0, 0, | |
147 | 0, 0, 0); | |
148 | } | |
149 | ||
150 | /* | |
151 | * Add a trace buffer entry for arguments, for 3 block-length args | |
152 | * and an integer arg. | |
153 | */ | |
154 | STATIC void | |
155 | xfs_bmbt_trace_argfffi( | |
156 | char *func, | |
157 | xfs_btree_cur_t *cur, | |
158 | xfs_dfiloff_t o, | |
159 | xfs_dfsbno_t b, | |
160 | xfs_dfilblks_t i, | |
161 | int j, | |
162 | int line) | |
163 | { | |
164 | xfs_bmbt_trace_enter(func, cur, ARGS, XFS_BMBT_KTRACE_ARGFFFI, line, | |
165 | o >> 32, (int)o, b >> 32, (int)b, | |
166 | i >> 32, (int)i, (int)j, 0, | |
167 | 0, 0, 0); | |
168 | } | |
169 | ||
170 | /* | |
171 | * Add a trace buffer entry for arguments, for one integer arg. | |
172 | */ | |
173 | STATIC void | |
174 | xfs_bmbt_trace_argi( | |
175 | char *func, | |
176 | xfs_btree_cur_t *cur, | |
177 | int i, | |
178 | int line) | |
179 | { | |
180 | xfs_bmbt_trace_enter(func, cur, ARGS, XFS_BMBT_KTRACE_ARGI, line, | |
181 | i, 0, 0, 0, | |
182 | 0, 0, 0, 0, | |
183 | 0, 0, 0); | |
184 | } | |
185 | ||
186 | /* | |
187 | * Add a trace buffer entry for arguments, for int, fsblock, key. | |
188 | */ | |
189 | STATIC void | |
190 | xfs_bmbt_trace_argifk( | |
191 | char *func, | |
192 | xfs_btree_cur_t *cur, | |
193 | int i, | |
194 | xfs_fsblock_t f, | |
8801bb99 | 195 | xfs_dfiloff_t o, |
1da177e4 LT |
196 | int line) |
197 | { | |
1da177e4 | 198 | xfs_bmbt_trace_enter(func, cur, ARGS, XFS_BMBT_KTRACE_ARGIFK, line, |
8801bb99 | 199 | i, (xfs_dfsbno_t)f >> 32, (int)f, o >> 32, |
1da177e4 LT |
200 | (int)o, 0, 0, 0, |
201 | 0, 0, 0); | |
202 | } | |
203 | ||
204 | /* | |
205 | * Add a trace buffer entry for arguments, for int, fsblock, rec. | |
206 | */ | |
207 | STATIC void | |
208 | xfs_bmbt_trace_argifr( | |
209 | char *func, | |
210 | xfs_btree_cur_t *cur, | |
211 | int i, | |
212 | xfs_fsblock_t f, | |
213 | xfs_bmbt_rec_t *r, | |
214 | int line) | |
215 | { | |
216 | xfs_dfsbno_t b; | |
217 | xfs_dfilblks_t c; | |
218 | xfs_dfsbno_t d; | |
219 | xfs_dfiloff_t o; | |
220 | xfs_bmbt_irec_t s; | |
221 | ||
222 | d = (xfs_dfsbno_t)f; | |
223 | xfs_bmbt_disk_get_all(r, &s); | |
224 | o = (xfs_dfiloff_t)s.br_startoff; | |
225 | b = (xfs_dfsbno_t)s.br_startblock; | |
226 | c = s.br_blockcount; | |
227 | xfs_bmbt_trace_enter(func, cur, ARGS, XFS_BMBT_KTRACE_ARGIFR, line, | |
228 | i, d >> 32, (int)d, o >> 32, | |
229 | (int)o, b >> 32, (int)b, c >> 32, | |
230 | (int)c, 0, 0); | |
231 | } | |
232 | ||
233 | /* | |
234 | * Add a trace buffer entry for arguments, for int, key. | |
235 | */ | |
236 | STATIC void | |
237 | xfs_bmbt_trace_argik( | |
238 | char *func, | |
239 | xfs_btree_cur_t *cur, | |
240 | int i, | |
241 | xfs_bmbt_key_t *k, | |
242 | int line) | |
243 | { | |
244 | xfs_dfiloff_t o; | |
245 | ||
8801bb99 | 246 | o = be64_to_cpu(k->br_startoff); |
1da177e4 LT |
247 | xfs_bmbt_trace_enter(func, cur, ARGS, XFS_BMBT_KTRACE_ARGIFK, line, |
248 | i, o >> 32, (int)o, 0, | |
249 | 0, 0, 0, 0, | |
250 | 0, 0, 0); | |
251 | } | |
252 | ||
253 | /* | |
254 | * Add a trace buffer entry for the cursor/operation. | |
255 | */ | |
256 | STATIC void | |
257 | xfs_bmbt_trace_cursor( | |
258 | char *func, | |
259 | xfs_btree_cur_t *cur, | |
260 | char *s, | |
261 | int line) | |
262 | { | |
263 | xfs_bmbt_rec_t r; | |
264 | ||
265 | xfs_bmbt_set_all(&r, &cur->bc_rec.b); | |
266 | xfs_bmbt_trace_enter(func, cur, s, XFS_BMBT_KTRACE_CUR, line, | |
267 | (cur->bc_nlevels << 24) | (cur->bc_private.b.flags << 16) | | |
268 | cur->bc_private.b.allocated, | |
269 | INT_GET(r.l0, ARCH_CONVERT) >> 32, (int)INT_GET(r.l0, ARCH_CONVERT), INT_GET(r.l1, ARCH_CONVERT) >> 32, (int)INT_GET(r.l1, ARCH_CONVERT), | |
270 | (unsigned long)cur->bc_bufs[0], (unsigned long)cur->bc_bufs[1], | |
271 | (unsigned long)cur->bc_bufs[2], (unsigned long)cur->bc_bufs[3], | |
272 | (cur->bc_ptrs[0] << 16) | cur->bc_ptrs[1], | |
273 | (cur->bc_ptrs[2] << 16) | cur->bc_ptrs[3]); | |
274 | } | |
275 | ||
276 | #define XFS_BMBT_TRACE_ARGBI(c,b,i) \ | |
277 | xfs_bmbt_trace_argbi(fname, c, b, i, __LINE__) | |
278 | #define XFS_BMBT_TRACE_ARGBII(c,b,i,j) \ | |
279 | xfs_bmbt_trace_argbii(fname, c, b, i, j, __LINE__) | |
280 | #define XFS_BMBT_TRACE_ARGFFFI(c,o,b,i,j) \ | |
281 | xfs_bmbt_trace_argfffi(fname, c, o, b, i, j, __LINE__) | |
282 | #define XFS_BMBT_TRACE_ARGI(c,i) \ | |
283 | xfs_bmbt_trace_argi(fname, c, i, __LINE__) | |
8801bb99 CH |
284 | #define XFS_BMBT_TRACE_ARGIFK(c,i,f,s) \ |
285 | xfs_bmbt_trace_argifk(fname, c, i, f, s, __LINE__) | |
1da177e4 LT |
286 | #define XFS_BMBT_TRACE_ARGIFR(c,i,f,r) \ |
287 | xfs_bmbt_trace_argifr(fname, c, i, f, r, __LINE__) | |
288 | #define XFS_BMBT_TRACE_ARGIK(c,i,k) \ | |
289 | xfs_bmbt_trace_argik(fname, c, i, k, __LINE__) | |
290 | #define XFS_BMBT_TRACE_CURSOR(c,s) \ | |
291 | xfs_bmbt_trace_cursor(fname, c, s, __LINE__) | |
292 | #else | |
293 | #define XFS_BMBT_TRACE_ARGBI(c,b,i) | |
294 | #define XFS_BMBT_TRACE_ARGBII(c,b,i,j) | |
295 | #define XFS_BMBT_TRACE_ARGFFFI(c,o,b,i,j) | |
296 | #define XFS_BMBT_TRACE_ARGI(c,i) | |
8801bb99 | 297 | #define XFS_BMBT_TRACE_ARGIFK(c,i,f,s) |
1da177e4 LT |
298 | #define XFS_BMBT_TRACE_ARGIFR(c,i,f,r) |
299 | #define XFS_BMBT_TRACE_ARGIK(c,i,k) | |
300 | #define XFS_BMBT_TRACE_CURSOR(c,s) | |
301 | #endif /* XFS_BMBT_TRACE */ | |
302 | ||
303 | ||
304 | /* | |
305 | * Internal functions. | |
306 | */ | |
307 | ||
308 | /* | |
309 | * Delete record pointed to by cur/level. | |
310 | */ | |
311 | STATIC int /* error */ | |
312 | xfs_bmbt_delrec( | |
313 | xfs_btree_cur_t *cur, | |
314 | int level, | |
315 | int *stat) /* success/failure */ | |
316 | { | |
317 | xfs_bmbt_block_t *block; /* bmap btree block */ | |
318 | xfs_fsblock_t bno; /* fs-relative block number */ | |
319 | xfs_buf_t *bp; /* buffer for block */ | |
320 | int error; /* error return value */ | |
321 | #ifdef XFS_BMBT_TRACE | |
322 | static char fname[] = "xfs_bmbt_delrec"; | |
323 | #endif | |
324 | int i; /* loop counter */ | |
325 | int j; /* temp state */ | |
326 | xfs_bmbt_key_t key; /* bmap btree key */ | |
327 | xfs_bmbt_key_t *kp=NULL; /* pointer to bmap btree key */ | |
328 | xfs_fsblock_t lbno; /* left sibling block number */ | |
329 | xfs_buf_t *lbp; /* left buffer pointer */ | |
330 | xfs_bmbt_block_t *left; /* left btree block */ | |
331 | xfs_bmbt_key_t *lkp; /* left btree key */ | |
332 | xfs_bmbt_ptr_t *lpp; /* left address pointer */ | |
333 | int lrecs=0; /* left record count */ | |
334 | xfs_bmbt_rec_t *lrp; /* left record pointer */ | |
335 | xfs_mount_t *mp; /* file system mount point */ | |
336 | xfs_bmbt_ptr_t *pp; /* pointer to bmap block addr */ | |
337 | int ptr; /* key/record index */ | |
338 | xfs_fsblock_t rbno; /* right sibling block number */ | |
339 | xfs_buf_t *rbp; /* right buffer pointer */ | |
340 | xfs_bmbt_block_t *right; /* right btree block */ | |
341 | xfs_bmbt_key_t *rkp; /* right btree key */ | |
342 | xfs_bmbt_rec_t *rp; /* pointer to bmap btree rec */ | |
343 | xfs_bmbt_ptr_t *rpp; /* right address pointer */ | |
344 | xfs_bmbt_block_t *rrblock; /* right-right btree block */ | |
345 | xfs_buf_t *rrbp; /* right-right buffer pointer */ | |
346 | int rrecs=0; /* right record count */ | |
347 | xfs_bmbt_rec_t *rrp; /* right record pointer */ | |
348 | xfs_btree_cur_t *tcur; /* temporary btree cursor */ | |
349 | int numrecs; /* temporary numrec count */ | |
350 | int numlrecs, numrrecs; | |
351 | ||
352 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
353 | XFS_BMBT_TRACE_ARGI(cur, level); | |
354 | ptr = cur->bc_ptrs[level]; | |
1121b219 | 355 | tcur = NULL; |
1da177e4 LT |
356 | if (ptr == 0) { |
357 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
358 | *stat = 0; | |
359 | return 0; | |
360 | } | |
361 | block = xfs_bmbt_get_block(cur, level, &bp); | |
16259e7d | 362 | numrecs = be16_to_cpu(block->bb_numrecs); |
1da177e4 LT |
363 | #ifdef DEBUG |
364 | if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { | |
365 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
366 | goto error0; | |
367 | } | |
368 | #endif | |
369 | if (ptr > numrecs) { | |
370 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
371 | *stat = 0; | |
372 | return 0; | |
373 | } | |
374 | XFS_STATS_INC(xs_bmbt_delrec); | |
375 | if (level > 0) { | |
376 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); | |
377 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); | |
378 | #ifdef DEBUG | |
379 | for (i = ptr; i < numrecs; i++) { | |
b113bcb8 | 380 | if ((error = xfs_btree_check_lptr_disk(cur, pp[i], level))) { |
1da177e4 LT |
381 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
382 | goto error0; | |
383 | } | |
384 | } | |
385 | #endif | |
386 | if (ptr < numrecs) { | |
387 | memmove(&kp[ptr - 1], &kp[ptr], | |
388 | (numrecs - ptr) * sizeof(*kp)); | |
389 | memmove(&pp[ptr - 1], &pp[ptr], /* INT_: direct copy */ | |
390 | (numrecs - ptr) * sizeof(*pp)); | |
391 | xfs_bmbt_log_ptrs(cur, bp, ptr, numrecs - 1); | |
392 | xfs_bmbt_log_keys(cur, bp, ptr, numrecs - 1); | |
393 | } | |
394 | } else { | |
395 | rp = XFS_BMAP_REC_IADDR(block, 1, cur); | |
396 | if (ptr < numrecs) { | |
397 | memmove(&rp[ptr - 1], &rp[ptr], | |
398 | (numrecs - ptr) * sizeof(*rp)); | |
399 | xfs_bmbt_log_recs(cur, bp, ptr, numrecs - 1); | |
400 | } | |
401 | if (ptr == 1) { | |
8801bb99 CH |
402 | key.br_startoff = |
403 | cpu_to_be64(xfs_bmbt_disk_get_startoff(rp)); | |
1da177e4 LT |
404 | kp = &key; |
405 | } | |
406 | } | |
407 | numrecs--; | |
16259e7d | 408 | block->bb_numrecs = cpu_to_be16(numrecs); |
1da177e4 LT |
409 | xfs_bmbt_log_block(cur, bp, XFS_BB_NUMRECS); |
410 | /* | |
411 | * We're at the root level. | |
412 | * First, shrink the root block in-memory. | |
413 | * Try to get rid of the next level down. | |
414 | * If we can't then there's nothing left to do. | |
415 | */ | |
416 | if (level == cur->bc_nlevels - 1) { | |
417 | xfs_iroot_realloc(cur->bc_private.b.ip, -1, | |
418 | cur->bc_private.b.whichfork); | |
419 | if ((error = xfs_bmbt_killroot(cur))) { | |
420 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
421 | goto error0; | |
422 | } | |
423 | if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &j))) { | |
424 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
425 | goto error0; | |
426 | } | |
427 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
428 | *stat = 1; | |
429 | return 0; | |
430 | } | |
431 | if (ptr == 1 && (error = xfs_bmbt_updkey(cur, kp, level + 1))) { | |
432 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
433 | goto error0; | |
434 | } | |
435 | if (numrecs >= XFS_BMAP_BLOCK_IMINRECS(level, cur)) { | |
436 | if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &j))) { | |
437 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
438 | goto error0; | |
439 | } | |
440 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
441 | *stat = 1; | |
442 | return 0; | |
443 | } | |
16259e7d CH |
444 | rbno = be64_to_cpu(block->bb_rightsib); |
445 | lbno = be64_to_cpu(block->bb_leftsib); | |
1da177e4 LT |
446 | /* |
447 | * One child of root, need to get a chance to copy its contents | |
448 | * into the root and delete it. Can't go up to next level, | |
449 | * there's nothing to delete there. | |
450 | */ | |
451 | if (lbno == NULLFSBLOCK && rbno == NULLFSBLOCK && | |
452 | level == cur->bc_nlevels - 2) { | |
453 | if ((error = xfs_bmbt_killroot(cur))) { | |
454 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
455 | goto error0; | |
456 | } | |
457 | if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &i))) { | |
458 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
459 | goto error0; | |
460 | } | |
461 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
462 | *stat = 1; | |
463 | return 0; | |
464 | } | |
465 | ASSERT(rbno != NULLFSBLOCK || lbno != NULLFSBLOCK); | |
466 | if ((error = xfs_btree_dup_cursor(cur, &tcur))) { | |
467 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
468 | goto error0; | |
469 | } | |
470 | bno = NULLFSBLOCK; | |
471 | if (rbno != NULLFSBLOCK) { | |
472 | i = xfs_btree_lastrec(tcur, level); | |
473 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
474 | if ((error = xfs_bmbt_increment(tcur, level, &i))) { | |
475 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
476 | goto error0; | |
477 | } | |
478 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
479 | i = xfs_btree_lastrec(tcur, level); | |
480 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
481 | rbp = tcur->bc_bufs[level]; | |
482 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); | |
483 | #ifdef DEBUG | |
484 | if ((error = xfs_btree_check_lblock(cur, right, level, rbp))) { | |
485 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
486 | goto error0; | |
487 | } | |
488 | #endif | |
16259e7d CH |
489 | bno = be64_to_cpu(right->bb_leftsib); |
490 | if (be16_to_cpu(right->bb_numrecs) - 1 >= | |
1da177e4 LT |
491 | XFS_BMAP_BLOCK_IMINRECS(level, cur)) { |
492 | if ((error = xfs_bmbt_lshift(tcur, level, &i))) { | |
493 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
494 | goto error0; | |
495 | } | |
496 | if (i) { | |
16259e7d | 497 | ASSERT(be16_to_cpu(block->bb_numrecs) >= |
1da177e4 LT |
498 | XFS_BMAP_BLOCK_IMINRECS(level, tcur)); |
499 | xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); | |
500 | tcur = NULL; | |
501 | if (level > 0) { | |
502 | if ((error = xfs_bmbt_decrement(cur, | |
503 | level, &i))) { | |
504 | XFS_BMBT_TRACE_CURSOR(cur, | |
505 | ERROR); | |
506 | goto error0; | |
507 | } | |
508 | } | |
509 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
510 | *stat = 1; | |
511 | return 0; | |
512 | } | |
513 | } | |
16259e7d | 514 | rrecs = be16_to_cpu(right->bb_numrecs); |
1da177e4 LT |
515 | if (lbno != NULLFSBLOCK) { |
516 | i = xfs_btree_firstrec(tcur, level); | |
517 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
518 | if ((error = xfs_bmbt_decrement(tcur, level, &i))) { | |
519 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
520 | goto error0; | |
521 | } | |
522 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
523 | } | |
524 | } | |
525 | if (lbno != NULLFSBLOCK) { | |
526 | i = xfs_btree_firstrec(tcur, level); | |
527 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
528 | /* | |
529 | * decrement to last in block | |
530 | */ | |
531 | if ((error = xfs_bmbt_decrement(tcur, level, &i))) { | |
532 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
533 | goto error0; | |
534 | } | |
535 | i = xfs_btree_firstrec(tcur, level); | |
536 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
537 | lbp = tcur->bc_bufs[level]; | |
538 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); | |
539 | #ifdef DEBUG | |
540 | if ((error = xfs_btree_check_lblock(cur, left, level, lbp))) { | |
541 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
542 | goto error0; | |
543 | } | |
544 | #endif | |
16259e7d CH |
545 | bno = be64_to_cpu(left->bb_rightsib); |
546 | if (be16_to_cpu(left->bb_numrecs) - 1 >= | |
1da177e4 LT |
547 | XFS_BMAP_BLOCK_IMINRECS(level, cur)) { |
548 | if ((error = xfs_bmbt_rshift(tcur, level, &i))) { | |
549 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
550 | goto error0; | |
551 | } | |
552 | if (i) { | |
16259e7d | 553 | ASSERT(be16_to_cpu(block->bb_numrecs) >= |
1da177e4 LT |
554 | XFS_BMAP_BLOCK_IMINRECS(level, tcur)); |
555 | xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); | |
556 | tcur = NULL; | |
557 | if (level == 0) | |
558 | cur->bc_ptrs[0]++; | |
559 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
560 | *stat = 1; | |
561 | return 0; | |
562 | } | |
563 | } | |
16259e7d | 564 | lrecs = be16_to_cpu(left->bb_numrecs); |
1da177e4 LT |
565 | } |
566 | xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); | |
567 | tcur = NULL; | |
568 | mp = cur->bc_mp; | |
569 | ASSERT(bno != NULLFSBLOCK); | |
570 | if (lbno != NULLFSBLOCK && | |
16259e7d | 571 | lrecs + be16_to_cpu(block->bb_numrecs) <= XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
1da177e4 LT |
572 | rbno = bno; |
573 | right = block; | |
574 | rbp = bp; | |
575 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, lbno, 0, &lbp, | |
576 | XFS_BMAP_BTREE_REF))) { | |
577 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
578 | goto error0; | |
579 | } | |
580 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); | |
581 | if ((error = xfs_btree_check_lblock(cur, left, level, lbp))) { | |
582 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
583 | goto error0; | |
584 | } | |
585 | } else if (rbno != NULLFSBLOCK && | |
16259e7d | 586 | rrecs + be16_to_cpu(block->bb_numrecs) <= |
1da177e4 LT |
587 | XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
588 | lbno = bno; | |
589 | left = block; | |
590 | lbp = bp; | |
591 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, rbno, 0, &rbp, | |
592 | XFS_BMAP_BTREE_REF))) { | |
593 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
594 | goto error0; | |
595 | } | |
596 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); | |
597 | if ((error = xfs_btree_check_lblock(cur, right, level, rbp))) { | |
598 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
599 | goto error0; | |
600 | } | |
16259e7d | 601 | lrecs = be16_to_cpu(left->bb_numrecs); |
1da177e4 LT |
602 | } else { |
603 | if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &i))) { | |
604 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
605 | goto error0; | |
606 | } | |
607 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
608 | *stat = 1; | |
609 | return 0; | |
610 | } | |
16259e7d CH |
611 | numlrecs = be16_to_cpu(left->bb_numrecs); |
612 | numrrecs = be16_to_cpu(right->bb_numrecs); | |
1da177e4 LT |
613 | if (level > 0) { |
614 | lkp = XFS_BMAP_KEY_IADDR(left, numlrecs + 1, cur); | |
615 | lpp = XFS_BMAP_PTR_IADDR(left, numlrecs + 1, cur); | |
616 | rkp = XFS_BMAP_KEY_IADDR(right, 1, cur); | |
617 | rpp = XFS_BMAP_PTR_IADDR(right, 1, cur); | |
618 | #ifdef DEBUG | |
619 | for (i = 0; i < numrrecs; i++) { | |
b113bcb8 | 620 | if ((error = xfs_btree_check_lptr_disk(cur, rpp[i], level))) { |
1da177e4 LT |
621 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
622 | goto error0; | |
623 | } | |
624 | } | |
625 | #endif | |
626 | memcpy(lkp, rkp, numrrecs * sizeof(*lkp)); | |
627 | memcpy(lpp, rpp, numrrecs * sizeof(*lpp)); | |
628 | xfs_bmbt_log_keys(cur, lbp, numlrecs + 1, numlrecs + numrrecs); | |
629 | xfs_bmbt_log_ptrs(cur, lbp, numlrecs + 1, numlrecs + numrrecs); | |
630 | } else { | |
631 | lrp = XFS_BMAP_REC_IADDR(left, numlrecs + 1, cur); | |
632 | rrp = XFS_BMAP_REC_IADDR(right, 1, cur); | |
633 | memcpy(lrp, rrp, numrrecs * sizeof(*lrp)); | |
634 | xfs_bmbt_log_recs(cur, lbp, numlrecs + 1, numlrecs + numrrecs); | |
635 | } | |
16259e7d CH |
636 | be16_add(&left->bb_numrecs, numrrecs); |
637 | left->bb_rightsib = right->bb_rightsib; | |
1da177e4 | 638 | xfs_bmbt_log_block(cur, lbp, XFS_BB_RIGHTSIB | XFS_BB_NUMRECS); |
16259e7d | 639 | if (be64_to_cpu(left->bb_rightsib) != NULLDFSBNO) { |
1da177e4 | 640 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, |
16259e7d | 641 | be64_to_cpu(left->bb_rightsib), |
1da177e4 LT |
642 | 0, &rrbp, XFS_BMAP_BTREE_REF))) { |
643 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
644 | goto error0; | |
645 | } | |
646 | rrblock = XFS_BUF_TO_BMBT_BLOCK(rrbp); | |
647 | if ((error = xfs_btree_check_lblock(cur, rrblock, level, rrbp))) { | |
648 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
649 | goto error0; | |
650 | } | |
16259e7d | 651 | rrblock->bb_leftsib = cpu_to_be64(lbno); |
1da177e4 LT |
652 | xfs_bmbt_log_block(cur, rrbp, XFS_BB_LEFTSIB); |
653 | } | |
654 | xfs_bmap_add_free(XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(rbp)), 1, | |
655 | cur->bc_private.b.flist, mp); | |
656 | cur->bc_private.b.ip->i_d.di_nblocks--; | |
657 | xfs_trans_log_inode(cur->bc_tp, cur->bc_private.b.ip, XFS_ILOG_CORE); | |
658 | XFS_TRANS_MOD_DQUOT_BYINO(mp, cur->bc_tp, cur->bc_private.b.ip, | |
659 | XFS_TRANS_DQ_BCOUNT, -1L); | |
660 | xfs_trans_binval(cur->bc_tp, rbp); | |
661 | if (bp != lbp) { | |
662 | cur->bc_bufs[level] = lbp; | |
663 | cur->bc_ptrs[level] += lrecs; | |
664 | cur->bc_ra[level] = 0; | |
665 | } else if ((error = xfs_bmbt_increment(cur, level + 1, &i))) { | |
666 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
667 | goto error0; | |
668 | } | |
669 | if (level > 0) | |
670 | cur->bc_ptrs[level]--; | |
671 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
672 | *stat = 2; | |
673 | return 0; | |
674 | ||
675 | error0: | |
676 | if (tcur) | |
677 | xfs_btree_del_cursor(tcur, XFS_BTREE_ERROR); | |
678 | return error; | |
679 | } | |
680 | ||
681 | #ifdef DEBUG | |
682 | /* | |
683 | * Get the data from the pointed-to record. | |
684 | */ | |
685 | int | |
686 | xfs_bmbt_get_rec( | |
687 | xfs_btree_cur_t *cur, | |
688 | xfs_fileoff_t *off, | |
689 | xfs_fsblock_t *bno, | |
690 | xfs_filblks_t *len, | |
691 | xfs_exntst_t *state, | |
692 | int *stat) | |
693 | { | |
694 | xfs_bmbt_block_t *block; | |
695 | xfs_buf_t *bp; | |
696 | #ifdef DEBUG | |
697 | int error; | |
698 | #endif | |
699 | int ptr; | |
700 | xfs_bmbt_rec_t *rp; | |
701 | ||
702 | block = xfs_bmbt_get_block(cur, 0, &bp); | |
703 | ptr = cur->bc_ptrs[0]; | |
704 | #ifdef DEBUG | |
705 | if ((error = xfs_btree_check_lblock(cur, block, 0, bp))) | |
706 | return error; | |
707 | #endif | |
16259e7d | 708 | if (ptr > be16_to_cpu(block->bb_numrecs) || ptr <= 0) { |
1da177e4 LT |
709 | *stat = 0; |
710 | return 0; | |
711 | } | |
712 | rp = XFS_BMAP_REC_IADDR(block, ptr, cur); | |
713 | *off = xfs_bmbt_disk_get_startoff(rp); | |
714 | *bno = xfs_bmbt_disk_get_startblock(rp); | |
715 | *len = xfs_bmbt_disk_get_blockcount(rp); | |
716 | *state = xfs_bmbt_disk_get_state(rp); | |
717 | *stat = 1; | |
718 | return 0; | |
719 | } | |
720 | #endif | |
721 | ||
722 | /* | |
723 | * Insert one record/level. Return information to the caller | |
724 | * allowing the next level up to proceed if necessary. | |
725 | */ | |
726 | STATIC int /* error */ | |
727 | xfs_bmbt_insrec( | |
728 | xfs_btree_cur_t *cur, | |
729 | int level, | |
730 | xfs_fsblock_t *bnop, | |
731 | xfs_bmbt_rec_t *recp, | |
732 | xfs_btree_cur_t **curp, | |
733 | int *stat) /* no-go/done/continue */ | |
734 | { | |
735 | xfs_bmbt_block_t *block; /* bmap btree block */ | |
736 | xfs_buf_t *bp; /* buffer for block */ | |
737 | int error; /* error return value */ | |
738 | #ifdef XFS_BMBT_TRACE | |
739 | static char fname[] = "xfs_bmbt_insrec"; | |
740 | #endif | |
741 | int i; /* loop index */ | |
742 | xfs_bmbt_key_t key; /* bmap btree key */ | |
743 | xfs_bmbt_key_t *kp=NULL; /* pointer to bmap btree key */ | |
744 | int logflags; /* inode logging flags */ | |
745 | xfs_fsblock_t nbno; /* new block number */ | |
746 | struct xfs_btree_cur *ncur; /* new btree cursor */ | |
8801bb99 | 747 | __uint64_t startoff; /* new btree key value */ |
1da177e4 LT |
748 | xfs_bmbt_rec_t nrec; /* new record count */ |
749 | int optr; /* old key/record index */ | |
750 | xfs_bmbt_ptr_t *pp; /* pointer to bmap block addr */ | |
751 | int ptr; /* key/record index */ | |
752 | xfs_bmbt_rec_t *rp=NULL; /* pointer to bmap btree rec */ | |
753 | int numrecs; | |
754 | ||
755 | ASSERT(level < cur->bc_nlevels); | |
756 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
757 | XFS_BMBT_TRACE_ARGIFR(cur, level, *bnop, recp); | |
1121b219 | 758 | ncur = NULL; |
8801bb99 | 759 | key.br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(recp)); |
1da177e4 LT |
760 | optr = ptr = cur->bc_ptrs[level]; |
761 | if (ptr == 0) { | |
762 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
763 | *stat = 0; | |
764 | return 0; | |
765 | } | |
766 | XFS_STATS_INC(xs_bmbt_insrec); | |
767 | block = xfs_bmbt_get_block(cur, level, &bp); | |
16259e7d | 768 | numrecs = be16_to_cpu(block->bb_numrecs); |
1da177e4 LT |
769 | #ifdef DEBUG |
770 | if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { | |
771 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
772 | return error; | |
773 | } | |
774 | if (ptr <= numrecs) { | |
775 | if (level == 0) { | |
776 | rp = XFS_BMAP_REC_IADDR(block, ptr, cur); | |
777 | xfs_btree_check_rec(XFS_BTNUM_BMAP, recp, rp); | |
778 | } else { | |
779 | kp = XFS_BMAP_KEY_IADDR(block, ptr, cur); | |
780 | xfs_btree_check_key(XFS_BTNUM_BMAP, &key, kp); | |
781 | } | |
782 | } | |
783 | #endif | |
784 | nbno = NULLFSBLOCK; | |
785 | if (numrecs == XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { | |
786 | if (numrecs < XFS_BMAP_BLOCK_DMAXRECS(level, cur)) { | |
787 | /* | |
788 | * A root block, that can be made bigger. | |
789 | */ | |
790 | xfs_iroot_realloc(cur->bc_private.b.ip, 1, | |
791 | cur->bc_private.b.whichfork); | |
792 | block = xfs_bmbt_get_block(cur, level, &bp); | |
793 | } else if (level == cur->bc_nlevels - 1) { | |
794 | if ((error = xfs_bmbt_newroot(cur, &logflags, stat)) || | |
795 | *stat == 0) { | |
796 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
797 | return error; | |
798 | } | |
799 | xfs_trans_log_inode(cur->bc_tp, cur->bc_private.b.ip, | |
800 | logflags); | |
801 | block = xfs_bmbt_get_block(cur, level, &bp); | |
802 | } else { | |
803 | if ((error = xfs_bmbt_rshift(cur, level, &i))) { | |
804 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
805 | return error; | |
806 | } | |
807 | if (i) { | |
808 | /* nothing */ | |
809 | } else { | |
810 | if ((error = xfs_bmbt_lshift(cur, level, &i))) { | |
811 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
812 | return error; | |
813 | } | |
814 | if (i) { | |
815 | optr = ptr = cur->bc_ptrs[level]; | |
816 | } else { | |
817 | if ((error = xfs_bmbt_split(cur, level, | |
8801bb99 | 818 | &nbno, &startoff, &ncur, |
1da177e4 LT |
819 | &i))) { |
820 | XFS_BMBT_TRACE_CURSOR(cur, | |
821 | ERROR); | |
822 | return error; | |
823 | } | |
824 | if (i) { | |
825 | block = xfs_bmbt_get_block( | |
826 | cur, level, &bp); | |
827 | #ifdef DEBUG | |
828 | if ((error = | |
829 | xfs_btree_check_lblock(cur, | |
830 | block, level, bp))) { | |
831 | XFS_BMBT_TRACE_CURSOR( | |
832 | cur, ERROR); | |
833 | return error; | |
834 | } | |
835 | #endif | |
836 | ptr = cur->bc_ptrs[level]; | |
837 | xfs_bmbt_disk_set_allf(&nrec, | |
8801bb99 | 838 | startoff, 0, 0, |
1da177e4 LT |
839 | XFS_EXT_NORM); |
840 | } else { | |
841 | XFS_BMBT_TRACE_CURSOR(cur, | |
842 | EXIT); | |
843 | *stat = 0; | |
844 | return 0; | |
845 | } | |
846 | } | |
847 | } | |
848 | } | |
849 | } | |
16259e7d | 850 | numrecs = be16_to_cpu(block->bb_numrecs); |
1da177e4 LT |
851 | if (level > 0) { |
852 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); | |
853 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); | |
854 | #ifdef DEBUG | |
855 | for (i = numrecs; i >= ptr; i--) { | |
b113bcb8 | 856 | if ((error = xfs_btree_check_lptr_disk(cur, pp[i - 1], |
1da177e4 LT |
857 | level))) { |
858 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
859 | return error; | |
860 | } | |
861 | } | |
862 | #endif | |
863 | memmove(&kp[ptr], &kp[ptr - 1], | |
864 | (numrecs - ptr + 1) * sizeof(*kp)); | |
865 | memmove(&pp[ptr], &pp[ptr - 1], /* INT_: direct copy */ | |
866 | (numrecs - ptr + 1) * sizeof(*pp)); | |
867 | #ifdef DEBUG | |
576039cf | 868 | if ((error = xfs_btree_check_lptr(cur, *bnop, level))) { |
1da177e4 LT |
869 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
870 | return error; | |
871 | } | |
872 | #endif | |
873 | kp[ptr - 1] = key; | |
576039cf | 874 | pp[ptr - 1] = cpu_to_be64(*bnop); |
1da177e4 | 875 | numrecs++; |
16259e7d | 876 | block->bb_numrecs = cpu_to_be16(numrecs); |
1da177e4 LT |
877 | xfs_bmbt_log_keys(cur, bp, ptr, numrecs); |
878 | xfs_bmbt_log_ptrs(cur, bp, ptr, numrecs); | |
879 | } else { | |
880 | rp = XFS_BMAP_REC_IADDR(block, 1, cur); | |
881 | memmove(&rp[ptr], &rp[ptr - 1], | |
882 | (numrecs - ptr + 1) * sizeof(*rp)); | |
883 | rp[ptr - 1] = *recp; | |
884 | numrecs++; | |
16259e7d | 885 | block->bb_numrecs = cpu_to_be16(numrecs); |
1da177e4 LT |
886 | xfs_bmbt_log_recs(cur, bp, ptr, numrecs); |
887 | } | |
888 | xfs_bmbt_log_block(cur, bp, XFS_BB_NUMRECS); | |
889 | #ifdef DEBUG | |
890 | if (ptr < numrecs) { | |
891 | if (level == 0) | |
892 | xfs_btree_check_rec(XFS_BTNUM_BMAP, rp + ptr - 1, | |
893 | rp + ptr); | |
894 | else | |
895 | xfs_btree_check_key(XFS_BTNUM_BMAP, kp + ptr - 1, | |
896 | kp + ptr); | |
897 | } | |
898 | #endif | |
899 | if (optr == 1 && (error = xfs_bmbt_updkey(cur, &key, level + 1))) { | |
900 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
901 | return error; | |
902 | } | |
903 | *bnop = nbno; | |
904 | if (nbno != NULLFSBLOCK) { | |
905 | *recp = nrec; | |
906 | *curp = ncur; | |
907 | } | |
908 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
909 | *stat = 1; | |
910 | return 0; | |
911 | } | |
912 | ||
913 | STATIC int | |
914 | xfs_bmbt_killroot( | |
915 | xfs_btree_cur_t *cur) | |
916 | { | |
917 | xfs_bmbt_block_t *block; | |
918 | xfs_bmbt_block_t *cblock; | |
919 | xfs_buf_t *cbp; | |
920 | xfs_bmbt_key_t *ckp; | |
921 | xfs_bmbt_ptr_t *cpp; | |
922 | #ifdef DEBUG | |
923 | int error; | |
924 | #endif | |
925 | #ifdef XFS_BMBT_TRACE | |
926 | static char fname[] = "xfs_bmbt_killroot"; | |
927 | #endif | |
928 | int i; | |
929 | xfs_bmbt_key_t *kp; | |
930 | xfs_inode_t *ip; | |
931 | xfs_ifork_t *ifp; | |
932 | int level; | |
933 | xfs_bmbt_ptr_t *pp; | |
934 | ||
935 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
936 | level = cur->bc_nlevels - 1; | |
937 | ASSERT(level >= 1); | |
938 | /* | |
939 | * Don't deal with the root block needs to be a leaf case. | |
940 | * We're just going to turn the thing back into extents anyway. | |
941 | */ | |
942 | if (level == 1) { | |
943 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
944 | return 0; | |
945 | } | |
946 | block = xfs_bmbt_get_block(cur, level, &cbp); | |
947 | /* | |
948 | * Give up if the root has multiple children. | |
949 | */ | |
16259e7d | 950 | if (be16_to_cpu(block->bb_numrecs) != 1) { |
1da177e4 LT |
951 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
952 | return 0; | |
953 | } | |
954 | /* | |
955 | * Only do this if the next level will fit. | |
956 | * Then the data must be copied up to the inode, | |
957 | * instead of freeing the root you free the next level. | |
958 | */ | |
959 | cbp = cur->bc_bufs[level - 1]; | |
960 | cblock = XFS_BUF_TO_BMBT_BLOCK(cbp); | |
16259e7d | 961 | if (be16_to_cpu(cblock->bb_numrecs) > XFS_BMAP_BLOCK_DMAXRECS(level, cur)) { |
1da177e4 LT |
962 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
963 | return 0; | |
964 | } | |
16259e7d CH |
965 | ASSERT(be64_to_cpu(cblock->bb_leftsib) == NULLDFSBNO); |
966 | ASSERT(be64_to_cpu(cblock->bb_rightsib) == NULLDFSBNO); | |
1da177e4 LT |
967 | ip = cur->bc_private.b.ip; |
968 | ifp = XFS_IFORK_PTR(ip, cur->bc_private.b.whichfork); | |
969 | ASSERT(XFS_BMAP_BLOCK_IMAXRECS(level, cur) == | |
970 | XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes)); | |
16259e7d | 971 | i = (int)(be16_to_cpu(cblock->bb_numrecs) - XFS_BMAP_BLOCK_IMAXRECS(level, cur)); |
1da177e4 LT |
972 | if (i) { |
973 | xfs_iroot_realloc(ip, i, cur->bc_private.b.whichfork); | |
974 | block = ifp->if_broot; | |
975 | } | |
16259e7d CH |
976 | be16_add(&block->bb_numrecs, i); |
977 | ASSERT(block->bb_numrecs == cblock->bb_numrecs); | |
1da177e4 LT |
978 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); |
979 | ckp = XFS_BMAP_KEY_IADDR(cblock, 1, cur); | |
16259e7d | 980 | memcpy(kp, ckp, be16_to_cpu(block->bb_numrecs) * sizeof(*kp)); |
1da177e4 LT |
981 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); |
982 | cpp = XFS_BMAP_PTR_IADDR(cblock, 1, cur); | |
983 | #ifdef DEBUG | |
16259e7d | 984 | for (i = 0; i < be16_to_cpu(cblock->bb_numrecs); i++) { |
b113bcb8 | 985 | if ((error = xfs_btree_check_lptr_disk(cur, cpp[i], level - 1))) { |
1da177e4 LT |
986 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
987 | return error; | |
988 | } | |
989 | } | |
990 | #endif | |
16259e7d | 991 | memcpy(pp, cpp, be16_to_cpu(block->bb_numrecs) * sizeof(*pp)); |
1da177e4 LT |
992 | xfs_bmap_add_free(XFS_DADDR_TO_FSB(cur->bc_mp, XFS_BUF_ADDR(cbp)), 1, |
993 | cur->bc_private.b.flist, cur->bc_mp); | |
994 | ip->i_d.di_nblocks--; | |
995 | XFS_TRANS_MOD_DQUOT_BYINO(cur->bc_mp, cur->bc_tp, ip, | |
996 | XFS_TRANS_DQ_BCOUNT, -1L); | |
997 | xfs_trans_binval(cur->bc_tp, cbp); | |
998 | cur->bc_bufs[level - 1] = NULL; | |
16259e7d | 999 | be16_add(&block->bb_level, -1); |
1da177e4 LT |
1000 | xfs_trans_log_inode(cur->bc_tp, ip, |
1001 | XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); | |
1002 | cur->bc_nlevels--; | |
1003 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | /* | |
1008 | * Log key values from the btree block. | |
1009 | */ | |
1010 | STATIC void | |
1011 | xfs_bmbt_log_keys( | |
1012 | xfs_btree_cur_t *cur, | |
1013 | xfs_buf_t *bp, | |
1014 | int kfirst, | |
1015 | int klast) | |
1016 | { | |
1017 | #ifdef XFS_BMBT_TRACE | |
1018 | static char fname[] = "xfs_bmbt_log_keys"; | |
1019 | #endif | |
1020 | xfs_trans_t *tp; | |
1021 | ||
1022 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1023 | XFS_BMBT_TRACE_ARGBII(cur, bp, kfirst, klast); | |
1024 | tp = cur->bc_tp; | |
1025 | if (bp) { | |
1026 | xfs_bmbt_block_t *block; | |
1027 | int first; | |
1028 | xfs_bmbt_key_t *kp; | |
1029 | int last; | |
1030 | ||
1031 | block = XFS_BUF_TO_BMBT_BLOCK(bp); | |
1032 | kp = XFS_BMAP_KEY_DADDR(block, 1, cur); | |
1033 | first = (int)((xfs_caddr_t)&kp[kfirst - 1] - (xfs_caddr_t)block); | |
1034 | last = (int)(((xfs_caddr_t)&kp[klast] - 1) - (xfs_caddr_t)block); | |
1035 | xfs_trans_log_buf(tp, bp, first, last); | |
1036 | } else { | |
1037 | xfs_inode_t *ip; | |
1038 | ||
1039 | ip = cur->bc_private.b.ip; | |
1040 | xfs_trans_log_inode(tp, ip, | |
1041 | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); | |
1042 | } | |
1043 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1044 | } | |
1045 | ||
1046 | /* | |
1047 | * Log pointer values from the btree block. | |
1048 | */ | |
1049 | STATIC void | |
1050 | xfs_bmbt_log_ptrs( | |
1051 | xfs_btree_cur_t *cur, | |
1052 | xfs_buf_t *bp, | |
1053 | int pfirst, | |
1054 | int plast) | |
1055 | { | |
1056 | #ifdef XFS_BMBT_TRACE | |
1057 | static char fname[] = "xfs_bmbt_log_ptrs"; | |
1058 | #endif | |
1059 | xfs_trans_t *tp; | |
1060 | ||
1061 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1062 | XFS_BMBT_TRACE_ARGBII(cur, bp, pfirst, plast); | |
1063 | tp = cur->bc_tp; | |
1064 | if (bp) { | |
1065 | xfs_bmbt_block_t *block; | |
1066 | int first; | |
1067 | int last; | |
1068 | xfs_bmbt_ptr_t *pp; | |
1069 | ||
1070 | block = XFS_BUF_TO_BMBT_BLOCK(bp); | |
1071 | pp = XFS_BMAP_PTR_DADDR(block, 1, cur); | |
1072 | first = (int)((xfs_caddr_t)&pp[pfirst - 1] - (xfs_caddr_t)block); | |
1073 | last = (int)(((xfs_caddr_t)&pp[plast] - 1) - (xfs_caddr_t)block); | |
1074 | xfs_trans_log_buf(tp, bp, first, last); | |
1075 | } else { | |
1076 | xfs_inode_t *ip; | |
1077 | ||
1078 | ip = cur->bc_private.b.ip; | |
1079 | xfs_trans_log_inode(tp, ip, | |
1080 | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); | |
1081 | } | |
1082 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * Lookup the record. The cursor is made to point to it, based on dir. | |
1087 | */ | |
1088 | STATIC int /* error */ | |
1089 | xfs_bmbt_lookup( | |
1090 | xfs_btree_cur_t *cur, | |
1091 | xfs_lookup_t dir, | |
1092 | int *stat) /* success/failure */ | |
1093 | { | |
1094 | xfs_bmbt_block_t *block=NULL; | |
1095 | xfs_buf_t *bp; | |
1096 | xfs_daddr_t d; | |
1097 | xfs_sfiloff_t diff; | |
1098 | int error; /* error return value */ | |
1099 | #ifdef XFS_BMBT_TRACE | |
1100 | static char fname[] = "xfs_bmbt_lookup"; | |
1101 | #endif | |
1102 | xfs_fsblock_t fsbno=0; | |
1103 | int high; | |
1104 | int i; | |
1105 | int keyno=0; | |
1106 | xfs_bmbt_key_t *kkbase=NULL; | |
1107 | xfs_bmbt_key_t *kkp; | |
1108 | xfs_bmbt_rec_t *krbase=NULL; | |
1109 | xfs_bmbt_rec_t *krp; | |
1110 | int level; | |
1111 | int low; | |
1112 | xfs_mount_t *mp; | |
1113 | xfs_bmbt_ptr_t *pp; | |
1114 | xfs_bmbt_irec_t *rp; | |
1115 | xfs_fileoff_t startoff; | |
1116 | xfs_trans_t *tp; | |
1117 | ||
1118 | XFS_STATS_INC(xs_bmbt_lookup); | |
1119 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1120 | XFS_BMBT_TRACE_ARGI(cur, (int)dir); | |
1121 | tp = cur->bc_tp; | |
1122 | mp = cur->bc_mp; | |
1123 | rp = &cur->bc_rec.b; | |
1124 | for (level = cur->bc_nlevels - 1, diff = 1; level >= 0; level--) { | |
1125 | if (level < cur->bc_nlevels - 1) { | |
1126 | d = XFS_FSB_TO_DADDR(mp, fsbno); | |
1127 | bp = cur->bc_bufs[level]; | |
1128 | if (bp && XFS_BUF_ADDR(bp) != d) | |
1121b219 | 1129 | bp = NULL; |
1da177e4 LT |
1130 | if (!bp) { |
1131 | if ((error = xfs_btree_read_bufl(mp, tp, fsbno, | |
1132 | 0, &bp, XFS_BMAP_BTREE_REF))) { | |
1133 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1134 | return error; | |
1135 | } | |
1136 | xfs_btree_setbuf(cur, level, bp); | |
1137 | block = XFS_BUF_TO_BMBT_BLOCK(bp); | |
1138 | if ((error = xfs_btree_check_lblock(cur, block, | |
1139 | level, bp))) { | |
1140 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1141 | return error; | |
1142 | } | |
1143 | } else | |
1144 | block = XFS_BUF_TO_BMBT_BLOCK(bp); | |
1145 | } else | |
1146 | block = xfs_bmbt_get_block(cur, level, &bp); | |
1147 | if (diff == 0) | |
1148 | keyno = 1; | |
1149 | else { | |
1150 | if (level > 0) | |
1151 | kkbase = XFS_BMAP_KEY_IADDR(block, 1, cur); | |
1152 | else | |
1153 | krbase = XFS_BMAP_REC_IADDR(block, 1, cur); | |
1154 | low = 1; | |
16259e7d | 1155 | if (!(high = be16_to_cpu(block->bb_numrecs))) { |
1da177e4 LT |
1156 | ASSERT(level == 0); |
1157 | cur->bc_ptrs[0] = dir != XFS_LOOKUP_LE; | |
1158 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1159 | *stat = 0; | |
1160 | return 0; | |
1161 | } | |
1162 | while (low <= high) { | |
1163 | XFS_STATS_INC(xs_bmbt_compare); | |
1164 | keyno = (low + high) >> 1; | |
1165 | if (level > 0) { | |
1166 | kkp = kkbase + keyno - 1; | |
8801bb99 | 1167 | startoff = be64_to_cpu(kkp->br_startoff); |
1da177e4 LT |
1168 | } else { |
1169 | krp = krbase + keyno - 1; | |
1170 | startoff = xfs_bmbt_disk_get_startoff(krp); | |
1171 | } | |
1172 | diff = (xfs_sfiloff_t) | |
1173 | (startoff - rp->br_startoff); | |
1174 | if (diff < 0) | |
1175 | low = keyno + 1; | |
1176 | else if (diff > 0) | |
1177 | high = keyno - 1; | |
1178 | else | |
1179 | break; | |
1180 | } | |
1181 | } | |
1182 | if (level > 0) { | |
1183 | if (diff > 0 && --keyno < 1) | |
1184 | keyno = 1; | |
1185 | pp = XFS_BMAP_PTR_IADDR(block, keyno, cur); | |
576039cf | 1186 | fsbno = be64_to_cpu(*pp); |
1da177e4 | 1187 | #ifdef DEBUG |
576039cf | 1188 | if ((error = xfs_btree_check_lptr(cur, fsbno, level))) { |
1da177e4 LT |
1189 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
1190 | return error; | |
1191 | } | |
1192 | #endif | |
1da177e4 LT |
1193 | cur->bc_ptrs[level] = keyno; |
1194 | } | |
1195 | } | |
1196 | if (dir != XFS_LOOKUP_LE && diff < 0) { | |
1197 | keyno++; | |
1198 | /* | |
1199 | * If ge search and we went off the end of the block, but it's | |
1200 | * not the last block, we're in the wrong block. | |
1201 | */ | |
16259e7d CH |
1202 | if (dir == XFS_LOOKUP_GE && keyno > be16_to_cpu(block->bb_numrecs) && |
1203 | be64_to_cpu(block->bb_rightsib) != NULLDFSBNO) { | |
1da177e4 LT |
1204 | cur->bc_ptrs[0] = keyno; |
1205 | if ((error = xfs_bmbt_increment(cur, 0, &i))) { | |
1206 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1207 | return error; | |
1208 | } | |
1209 | XFS_WANT_CORRUPTED_RETURN(i == 1); | |
1210 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1211 | *stat = 1; | |
1212 | return 0; | |
1213 | } | |
1214 | } | |
1215 | else if (dir == XFS_LOOKUP_LE && diff > 0) | |
1216 | keyno--; | |
1217 | cur->bc_ptrs[0] = keyno; | |
16259e7d | 1218 | if (keyno == 0 || keyno > be16_to_cpu(block->bb_numrecs)) { |
1da177e4 LT |
1219 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
1220 | *stat = 0; | |
1221 | } else { | |
1222 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1223 | *stat = ((dir != XFS_LOOKUP_EQ) || (diff == 0)); | |
1224 | } | |
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | /* | |
1229 | * Move 1 record left from cur/level if possible. | |
1230 | * Update cur to reflect the new path. | |
1231 | */ | |
1232 | STATIC int /* error */ | |
1233 | xfs_bmbt_lshift( | |
1234 | xfs_btree_cur_t *cur, | |
1235 | int level, | |
1236 | int *stat) /* success/failure */ | |
1237 | { | |
1238 | int error; /* error return value */ | |
1239 | #ifdef XFS_BMBT_TRACE | |
1240 | static char fname[] = "xfs_bmbt_lshift"; | |
1241 | #endif | |
1242 | #ifdef DEBUG | |
1243 | int i; /* loop counter */ | |
1244 | #endif | |
1245 | xfs_bmbt_key_t key; /* bmap btree key */ | |
1246 | xfs_buf_t *lbp; /* left buffer pointer */ | |
1247 | xfs_bmbt_block_t *left; /* left btree block */ | |
1248 | xfs_bmbt_key_t *lkp=NULL; /* left btree key */ | |
1249 | xfs_bmbt_ptr_t *lpp; /* left address pointer */ | |
1250 | int lrecs; /* left record count */ | |
1251 | xfs_bmbt_rec_t *lrp=NULL; /* left record pointer */ | |
1252 | xfs_mount_t *mp; /* file system mount point */ | |
1253 | xfs_buf_t *rbp; /* right buffer pointer */ | |
1254 | xfs_bmbt_block_t *right; /* right btree block */ | |
1255 | xfs_bmbt_key_t *rkp=NULL; /* right btree key */ | |
1256 | xfs_bmbt_ptr_t *rpp=NULL; /* right address pointer */ | |
1257 | xfs_bmbt_rec_t *rrp=NULL; /* right record pointer */ | |
1258 | int rrecs; /* right record count */ | |
1259 | ||
1260 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1261 | XFS_BMBT_TRACE_ARGI(cur, level); | |
1262 | if (level == cur->bc_nlevels - 1) { | |
1263 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1264 | *stat = 0; | |
1265 | return 0; | |
1266 | } | |
1267 | rbp = cur->bc_bufs[level]; | |
1268 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); | |
1269 | #ifdef DEBUG | |
1270 | if ((error = xfs_btree_check_lblock(cur, right, level, rbp))) { | |
1271 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1272 | return error; | |
1273 | } | |
1274 | #endif | |
16259e7d | 1275 | if (be64_to_cpu(right->bb_leftsib) == NULLDFSBNO) { |
1da177e4 LT |
1276 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
1277 | *stat = 0; | |
1278 | return 0; | |
1279 | } | |
1280 | if (cur->bc_ptrs[level] <= 1) { | |
1281 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1282 | *stat = 0; | |
1283 | return 0; | |
1284 | } | |
1285 | mp = cur->bc_mp; | |
16259e7d | 1286 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, be64_to_cpu(right->bb_leftsib), 0, |
1da177e4 LT |
1287 | &lbp, XFS_BMAP_BTREE_REF))) { |
1288 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1289 | return error; | |
1290 | } | |
1291 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); | |
1292 | if ((error = xfs_btree_check_lblock(cur, left, level, lbp))) { | |
1293 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1294 | return error; | |
1295 | } | |
16259e7d | 1296 | if (be16_to_cpu(left->bb_numrecs) == XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
1da177e4 LT |
1297 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
1298 | *stat = 0; | |
1299 | return 0; | |
1300 | } | |
16259e7d | 1301 | lrecs = be16_to_cpu(left->bb_numrecs) + 1; |
1da177e4 LT |
1302 | if (level > 0) { |
1303 | lkp = XFS_BMAP_KEY_IADDR(left, lrecs, cur); | |
1304 | rkp = XFS_BMAP_KEY_IADDR(right, 1, cur); | |
1305 | *lkp = *rkp; | |
1306 | xfs_bmbt_log_keys(cur, lbp, lrecs, lrecs); | |
1307 | lpp = XFS_BMAP_PTR_IADDR(left, lrecs, cur); | |
1308 | rpp = XFS_BMAP_PTR_IADDR(right, 1, cur); | |
1309 | #ifdef DEBUG | |
b113bcb8 | 1310 | if ((error = xfs_btree_check_lptr_disk(cur, *rpp, level))) { |
1da177e4 LT |
1311 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
1312 | return error; | |
1313 | } | |
1314 | #endif | |
1315 | *lpp = *rpp; /* INT_: direct copy */ | |
1316 | xfs_bmbt_log_ptrs(cur, lbp, lrecs, lrecs); | |
1317 | } else { | |
1318 | lrp = XFS_BMAP_REC_IADDR(left, lrecs, cur); | |
1319 | rrp = XFS_BMAP_REC_IADDR(right, 1, cur); | |
1320 | *lrp = *rrp; | |
1321 | xfs_bmbt_log_recs(cur, lbp, lrecs, lrecs); | |
1322 | } | |
16259e7d | 1323 | left->bb_numrecs = cpu_to_be16(lrecs); |
1da177e4 LT |
1324 | xfs_bmbt_log_block(cur, lbp, XFS_BB_NUMRECS); |
1325 | #ifdef DEBUG | |
1326 | if (level > 0) | |
1327 | xfs_btree_check_key(XFS_BTNUM_BMAP, lkp - 1, lkp); | |
1328 | else | |
1329 | xfs_btree_check_rec(XFS_BTNUM_BMAP, lrp - 1, lrp); | |
1330 | #endif | |
16259e7d CH |
1331 | rrecs = be16_to_cpu(right->bb_numrecs) - 1; |
1332 | right->bb_numrecs = cpu_to_be16(rrecs); | |
1da177e4 LT |
1333 | xfs_bmbt_log_block(cur, rbp, XFS_BB_NUMRECS); |
1334 | if (level > 0) { | |
1335 | #ifdef DEBUG | |
1336 | for (i = 0; i < rrecs; i++) { | |
b113bcb8 | 1337 | if ((error = xfs_btree_check_lptr_disk(cur, rpp[i + 1], |
1da177e4 LT |
1338 | level))) { |
1339 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1340 | return error; | |
1341 | } | |
1342 | } | |
1343 | #endif | |
1344 | memmove(rkp, rkp + 1, rrecs * sizeof(*rkp)); | |
1345 | memmove(rpp, rpp + 1, rrecs * sizeof(*rpp)); | |
1346 | xfs_bmbt_log_keys(cur, rbp, 1, rrecs); | |
1347 | xfs_bmbt_log_ptrs(cur, rbp, 1, rrecs); | |
1348 | } else { | |
1349 | memmove(rrp, rrp + 1, rrecs * sizeof(*rrp)); | |
1350 | xfs_bmbt_log_recs(cur, rbp, 1, rrecs); | |
8801bb99 | 1351 | key.br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(rrp)); |
1da177e4 LT |
1352 | rkp = &key; |
1353 | } | |
1354 | if ((error = xfs_bmbt_updkey(cur, rkp, level + 1))) { | |
1355 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1356 | return error; | |
1357 | } | |
1358 | cur->bc_ptrs[level]--; | |
1359 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1360 | *stat = 1; | |
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | /* | |
1365 | * Move 1 record right from cur/level if possible. | |
1366 | * Update cur to reflect the new path. | |
1367 | */ | |
1368 | STATIC int /* error */ | |
1369 | xfs_bmbt_rshift( | |
1370 | xfs_btree_cur_t *cur, | |
1371 | int level, | |
1372 | int *stat) /* success/failure */ | |
1373 | { | |
1374 | int error; /* error return value */ | |
1375 | #ifdef XFS_BMBT_TRACE | |
1376 | static char fname[] = "xfs_bmbt_rshift"; | |
1377 | #endif | |
1378 | int i; /* loop counter */ | |
1379 | xfs_bmbt_key_t key; /* bmap btree key */ | |
1380 | xfs_buf_t *lbp; /* left buffer pointer */ | |
1381 | xfs_bmbt_block_t *left; /* left btree block */ | |
1382 | xfs_bmbt_key_t *lkp; /* left btree key */ | |
1383 | xfs_bmbt_ptr_t *lpp; /* left address pointer */ | |
1384 | xfs_bmbt_rec_t *lrp; /* left record pointer */ | |
1385 | xfs_mount_t *mp; /* file system mount point */ | |
1386 | xfs_buf_t *rbp; /* right buffer pointer */ | |
1387 | xfs_bmbt_block_t *right; /* right btree block */ | |
1388 | xfs_bmbt_key_t *rkp; /* right btree key */ | |
1389 | xfs_bmbt_ptr_t *rpp; /* right address pointer */ | |
1390 | xfs_bmbt_rec_t *rrp=NULL; /* right record pointer */ | |
1391 | struct xfs_btree_cur *tcur; /* temporary btree cursor */ | |
1392 | ||
1393 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1394 | XFS_BMBT_TRACE_ARGI(cur, level); | |
1395 | if (level == cur->bc_nlevels - 1) { | |
1396 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1397 | *stat = 0; | |
1398 | return 0; | |
1399 | } | |
1400 | lbp = cur->bc_bufs[level]; | |
1401 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); | |
1402 | #ifdef DEBUG | |
1403 | if ((error = xfs_btree_check_lblock(cur, left, level, lbp))) { | |
1404 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1405 | return error; | |
1406 | } | |
1407 | #endif | |
16259e7d | 1408 | if (be64_to_cpu(left->bb_rightsib) == NULLDFSBNO) { |
1da177e4 LT |
1409 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
1410 | *stat = 0; | |
1411 | return 0; | |
1412 | } | |
16259e7d | 1413 | if (cur->bc_ptrs[level] >= be16_to_cpu(left->bb_numrecs)) { |
1da177e4 LT |
1414 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
1415 | *stat = 0; | |
1416 | return 0; | |
1417 | } | |
1418 | mp = cur->bc_mp; | |
16259e7d | 1419 | if ((error = xfs_btree_read_bufl(mp, cur->bc_tp, be64_to_cpu(left->bb_rightsib), 0, |
1da177e4 LT |
1420 | &rbp, XFS_BMAP_BTREE_REF))) { |
1421 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1422 | return error; | |
1423 | } | |
1424 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); | |
1425 | if ((error = xfs_btree_check_lblock(cur, right, level, rbp))) { | |
1426 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1427 | return error; | |
1428 | } | |
16259e7d | 1429 | if (be16_to_cpu(right->bb_numrecs) == XFS_BMAP_BLOCK_IMAXRECS(level, cur)) { |
1da177e4 LT |
1430 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
1431 | *stat = 0; | |
1432 | return 0; | |
1433 | } | |
1434 | if (level > 0) { | |
16259e7d CH |
1435 | lkp = XFS_BMAP_KEY_IADDR(left, be16_to_cpu(left->bb_numrecs), cur); |
1436 | lpp = XFS_BMAP_PTR_IADDR(left, be16_to_cpu(left->bb_numrecs), cur); | |
1da177e4 LT |
1437 | rkp = XFS_BMAP_KEY_IADDR(right, 1, cur); |
1438 | rpp = XFS_BMAP_PTR_IADDR(right, 1, cur); | |
1439 | #ifdef DEBUG | |
16259e7d | 1440 | for (i = be16_to_cpu(right->bb_numrecs) - 1; i >= 0; i--) { |
576039cf | 1441 | if ((error = xfs_btree_check_lptr_disk(cur, rpp[i], level))) { |
1da177e4 LT |
1442 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
1443 | return error; | |
1444 | } | |
1445 | } | |
1446 | #endif | |
16259e7d CH |
1447 | memmove(rkp + 1, rkp, be16_to_cpu(right->bb_numrecs) * sizeof(*rkp)); |
1448 | memmove(rpp + 1, rpp, be16_to_cpu(right->bb_numrecs) * sizeof(*rpp)); | |
1da177e4 | 1449 | #ifdef DEBUG |
b113bcb8 | 1450 | if ((error = xfs_btree_check_lptr_disk(cur, *lpp, level))) { |
1da177e4 LT |
1451 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
1452 | return error; | |
1453 | } | |
1454 | #endif | |
1455 | *rkp = *lkp; | |
1456 | *rpp = *lpp; /* INT_: direct copy */ | |
16259e7d CH |
1457 | xfs_bmbt_log_keys(cur, rbp, 1, be16_to_cpu(right->bb_numrecs) + 1); |
1458 | xfs_bmbt_log_ptrs(cur, rbp, 1, be16_to_cpu(right->bb_numrecs) + 1); | |
1da177e4 | 1459 | } else { |
16259e7d | 1460 | lrp = XFS_BMAP_REC_IADDR(left, be16_to_cpu(left->bb_numrecs), cur); |
1da177e4 | 1461 | rrp = XFS_BMAP_REC_IADDR(right, 1, cur); |
16259e7d | 1462 | memmove(rrp + 1, rrp, be16_to_cpu(right->bb_numrecs) * sizeof(*rrp)); |
1da177e4 | 1463 | *rrp = *lrp; |
16259e7d | 1464 | xfs_bmbt_log_recs(cur, rbp, 1, be16_to_cpu(right->bb_numrecs) + 1); |
8801bb99 | 1465 | key.br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(rrp)); |
1da177e4 LT |
1466 | rkp = &key; |
1467 | } | |
16259e7d | 1468 | be16_add(&left->bb_numrecs, -1); |
1da177e4 | 1469 | xfs_bmbt_log_block(cur, lbp, XFS_BB_NUMRECS); |
16259e7d | 1470 | be16_add(&right->bb_numrecs, 1); |
1da177e4 LT |
1471 | #ifdef DEBUG |
1472 | if (level > 0) | |
1473 | xfs_btree_check_key(XFS_BTNUM_BMAP, rkp, rkp + 1); | |
1474 | else | |
1475 | xfs_btree_check_rec(XFS_BTNUM_BMAP, rrp, rrp + 1); | |
1476 | #endif | |
1477 | xfs_bmbt_log_block(cur, rbp, XFS_BB_NUMRECS); | |
1478 | if ((error = xfs_btree_dup_cursor(cur, &tcur))) { | |
1479 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1480 | return error; | |
1481 | } | |
1482 | i = xfs_btree_lastrec(tcur, level); | |
1483 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
1484 | if ((error = xfs_bmbt_increment(tcur, level, &i))) { | |
1485 | XFS_BMBT_TRACE_CURSOR(tcur, ERROR); | |
1486 | goto error1; | |
1487 | } | |
1488 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
1489 | if ((error = xfs_bmbt_updkey(tcur, rkp, level + 1))) { | |
1490 | XFS_BMBT_TRACE_CURSOR(tcur, ERROR); | |
1491 | goto error1; | |
1492 | } | |
1493 | xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); | |
1494 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1495 | *stat = 1; | |
1496 | return 0; | |
1497 | error0: | |
1498 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1499 | error1: | |
1500 | xfs_btree_del_cursor(tcur, XFS_BTREE_ERROR); | |
1501 | return error; | |
1502 | } | |
1503 | ||
1504 | /* | |
1505 | * Determine the extent state. | |
1506 | */ | |
1507 | /* ARGSUSED */ | |
1508 | STATIC xfs_exntst_t | |
1509 | xfs_extent_state( | |
1510 | xfs_filblks_t blks, | |
1511 | int extent_flag) | |
1512 | { | |
1513 | if (extent_flag) { | |
1514 | ASSERT(blks != 0); /* saved for DMIG */ | |
1515 | return XFS_EXT_UNWRITTEN; | |
1516 | } | |
1517 | return XFS_EXT_NORM; | |
1518 | } | |
1519 | ||
1520 | ||
1521 | /* | |
1522 | * Split cur/level block in half. | |
1523 | * Return new block number and its first record (to be inserted into parent). | |
1524 | */ | |
1525 | STATIC int /* error */ | |
1526 | xfs_bmbt_split( | |
1527 | xfs_btree_cur_t *cur, | |
1528 | int level, | |
1529 | xfs_fsblock_t *bnop, | |
8801bb99 | 1530 | __uint64_t *startoff, |
1da177e4 LT |
1531 | xfs_btree_cur_t **curp, |
1532 | int *stat) /* success/failure */ | |
1533 | { | |
1534 | xfs_alloc_arg_t args; /* block allocation args */ | |
1535 | int error; /* error return value */ | |
1536 | #ifdef XFS_BMBT_TRACE | |
1537 | static char fname[] = "xfs_bmbt_split"; | |
1538 | #endif | |
1539 | int i; /* loop counter */ | |
1540 | xfs_fsblock_t lbno; /* left sibling block number */ | |
1541 | xfs_buf_t *lbp; /* left buffer pointer */ | |
1542 | xfs_bmbt_block_t *left; /* left btree block */ | |
1543 | xfs_bmbt_key_t *lkp; /* left btree key */ | |
1544 | xfs_bmbt_ptr_t *lpp; /* left address pointer */ | |
1545 | xfs_bmbt_rec_t *lrp; /* left record pointer */ | |
1546 | xfs_buf_t *rbp; /* right buffer pointer */ | |
1547 | xfs_bmbt_block_t *right; /* right btree block */ | |
1548 | xfs_bmbt_key_t *rkp; /* right btree key */ | |
1549 | xfs_bmbt_ptr_t *rpp; /* right address pointer */ | |
1550 | xfs_bmbt_block_t *rrblock; /* right-right btree block */ | |
1551 | xfs_buf_t *rrbp; /* right-right buffer pointer */ | |
1552 | xfs_bmbt_rec_t *rrp; /* right record pointer */ | |
1553 | ||
1554 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
8801bb99 | 1555 | XFS_BMBT_TRACE_ARGIFK(cur, level, *bnop, *startoff); |
1da177e4 LT |
1556 | args.tp = cur->bc_tp; |
1557 | args.mp = cur->bc_mp; | |
1558 | lbp = cur->bc_bufs[level]; | |
1559 | lbno = XFS_DADDR_TO_FSB(args.mp, XFS_BUF_ADDR(lbp)); | |
1560 | left = XFS_BUF_TO_BMBT_BLOCK(lbp); | |
1561 | args.fsbno = cur->bc_private.b.firstblock; | |
d210a28c | 1562 | args.firstblock = args.fsbno; |
1da177e4 LT |
1563 | if (args.fsbno == NULLFSBLOCK) { |
1564 | args.fsbno = lbno; | |
1565 | args.type = XFS_ALLOCTYPE_START_BNO; | |
d210a28c | 1566 | } else |
1da177e4 LT |
1567 | args.type = XFS_ALLOCTYPE_NEAR_BNO; |
1568 | args.mod = args.minleft = args.alignment = args.total = args.isfl = | |
1569 | args.userdata = args.minalignslop = 0; | |
1570 | args.minlen = args.maxlen = args.prod = 1; | |
1571 | args.wasdel = cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL; | |
1572 | if (!args.wasdel && xfs_trans_get_block_res(args.tp) == 0) { | |
1573 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1574 | return XFS_ERROR(ENOSPC); | |
1575 | } | |
1576 | if ((error = xfs_alloc_vextent(&args))) { | |
1577 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1578 | return error; | |
1579 | } | |
1580 | if (args.fsbno == NULLFSBLOCK) { | |
1581 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1582 | *stat = 0; | |
1583 | return 0; | |
1584 | } | |
1585 | ASSERT(args.len == 1); | |
1586 | cur->bc_private.b.firstblock = args.fsbno; | |
1587 | cur->bc_private.b.allocated++; | |
1588 | cur->bc_private.b.ip->i_d.di_nblocks++; | |
1589 | xfs_trans_log_inode(args.tp, cur->bc_private.b.ip, XFS_ILOG_CORE); | |
1590 | XFS_TRANS_MOD_DQUOT_BYINO(args.mp, args.tp, cur->bc_private.b.ip, | |
1591 | XFS_TRANS_DQ_BCOUNT, 1L); | |
1592 | rbp = xfs_btree_get_bufl(args.mp, args.tp, args.fsbno, 0); | |
1593 | right = XFS_BUF_TO_BMBT_BLOCK(rbp); | |
1594 | #ifdef DEBUG | |
1595 | if ((error = xfs_btree_check_lblock(cur, left, level, rbp))) { | |
1596 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1597 | return error; | |
1598 | } | |
1599 | #endif | |
16259e7d CH |
1600 | right->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); |
1601 | right->bb_level = left->bb_level; | |
1602 | right->bb_numrecs = cpu_to_be16(be16_to_cpu(left->bb_numrecs) / 2); | |
1603 | if ((be16_to_cpu(left->bb_numrecs) & 1) && | |
1604 | cur->bc_ptrs[level] <= be16_to_cpu(right->bb_numrecs) + 1) | |
1605 | be16_add(&right->bb_numrecs, 1); | |
1606 | i = be16_to_cpu(left->bb_numrecs) - be16_to_cpu(right->bb_numrecs) + 1; | |
1da177e4 LT |
1607 | if (level > 0) { |
1608 | lkp = XFS_BMAP_KEY_IADDR(left, i, cur); | |
1609 | lpp = XFS_BMAP_PTR_IADDR(left, i, cur); | |
1610 | rkp = XFS_BMAP_KEY_IADDR(right, 1, cur); | |
1611 | rpp = XFS_BMAP_PTR_IADDR(right, 1, cur); | |
1612 | #ifdef DEBUG | |
16259e7d | 1613 | for (i = 0; i < be16_to_cpu(right->bb_numrecs); i++) { |
b113bcb8 | 1614 | if ((error = xfs_btree_check_lptr_disk(cur, lpp[i], level))) { |
1da177e4 LT |
1615 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
1616 | return error; | |
1617 | } | |
1618 | } | |
1619 | #endif | |
16259e7d CH |
1620 | memcpy(rkp, lkp, be16_to_cpu(right->bb_numrecs) * sizeof(*rkp)); |
1621 | memcpy(rpp, lpp, be16_to_cpu(right->bb_numrecs) * sizeof(*rpp)); | |
1622 | xfs_bmbt_log_keys(cur, rbp, 1, be16_to_cpu(right->bb_numrecs)); | |
1623 | xfs_bmbt_log_ptrs(cur, rbp, 1, be16_to_cpu(right->bb_numrecs)); | |
8801bb99 | 1624 | *startoff = be64_to_cpu(rkp->br_startoff); |
1da177e4 LT |
1625 | } else { |
1626 | lrp = XFS_BMAP_REC_IADDR(left, i, cur); | |
1627 | rrp = XFS_BMAP_REC_IADDR(right, 1, cur); | |
16259e7d CH |
1628 | memcpy(rrp, lrp, be16_to_cpu(right->bb_numrecs) * sizeof(*rrp)); |
1629 | xfs_bmbt_log_recs(cur, rbp, 1, be16_to_cpu(right->bb_numrecs)); | |
8801bb99 | 1630 | *startoff = xfs_bmbt_disk_get_startoff(rrp); |
1da177e4 | 1631 | } |
16259e7d CH |
1632 | be16_add(&left->bb_numrecs, -(be16_to_cpu(right->bb_numrecs))); |
1633 | right->bb_rightsib = left->bb_rightsib; | |
1634 | left->bb_rightsib = cpu_to_be64(args.fsbno); | |
1635 | right->bb_leftsib = cpu_to_be64(lbno); | |
1da177e4 LT |
1636 | xfs_bmbt_log_block(cur, rbp, XFS_BB_ALL_BITS); |
1637 | xfs_bmbt_log_block(cur, lbp, XFS_BB_NUMRECS | XFS_BB_RIGHTSIB); | |
16259e7d | 1638 | if (be64_to_cpu(right->bb_rightsib) != NULLDFSBNO) { |
1da177e4 | 1639 | if ((error = xfs_btree_read_bufl(args.mp, args.tp, |
16259e7d | 1640 | be64_to_cpu(right->bb_rightsib), 0, &rrbp, |
1da177e4 LT |
1641 | XFS_BMAP_BTREE_REF))) { |
1642 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1643 | return error; | |
1644 | } | |
1645 | rrblock = XFS_BUF_TO_BMBT_BLOCK(rrbp); | |
1646 | if ((error = xfs_btree_check_lblock(cur, rrblock, level, rrbp))) { | |
1647 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1648 | return error; | |
1649 | } | |
16259e7d | 1650 | rrblock->bb_leftsib = cpu_to_be64(args.fsbno); |
1da177e4 LT |
1651 | xfs_bmbt_log_block(cur, rrbp, XFS_BB_LEFTSIB); |
1652 | } | |
16259e7d | 1653 | if (cur->bc_ptrs[level] > be16_to_cpu(left->bb_numrecs) + 1) { |
1da177e4 | 1654 | xfs_btree_setbuf(cur, level, rbp); |
16259e7d | 1655 | cur->bc_ptrs[level] -= be16_to_cpu(left->bb_numrecs); |
1da177e4 LT |
1656 | } |
1657 | if (level + 1 < cur->bc_nlevels) { | |
1658 | if ((error = xfs_btree_dup_cursor(cur, curp))) { | |
1659 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1660 | return error; | |
1661 | } | |
1662 | (*curp)->bc_ptrs[level + 1]++; | |
1663 | } | |
1664 | *bnop = args.fsbno; | |
1665 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1666 | *stat = 1; | |
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | ||
1671 | /* | |
1672 | * Update keys for the record. | |
1673 | */ | |
1674 | STATIC int | |
1675 | xfs_bmbt_updkey( | |
1676 | xfs_btree_cur_t *cur, | |
1677 | xfs_bmbt_key_t *keyp, /* on-disk format */ | |
1678 | int level) | |
1679 | { | |
1680 | xfs_bmbt_block_t *block; | |
1681 | xfs_buf_t *bp; | |
1682 | #ifdef DEBUG | |
1683 | int error; | |
1684 | #endif | |
1685 | #ifdef XFS_BMBT_TRACE | |
1686 | static char fname[] = "xfs_bmbt_updkey"; | |
1687 | #endif | |
1688 | xfs_bmbt_key_t *kp; | |
1689 | int ptr; | |
1690 | ||
1691 | ASSERT(level >= 1); | |
1692 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1693 | XFS_BMBT_TRACE_ARGIK(cur, level, keyp); | |
1694 | for (ptr = 1; ptr == 1 && level < cur->bc_nlevels; level++) { | |
1695 | block = xfs_bmbt_get_block(cur, level, &bp); | |
1696 | #ifdef DEBUG | |
1697 | if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { | |
1698 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1699 | return error; | |
1700 | } | |
1701 | #endif | |
1702 | ptr = cur->bc_ptrs[level]; | |
1703 | kp = XFS_BMAP_KEY_IADDR(block, ptr, cur); | |
1704 | *kp = *keyp; | |
1705 | xfs_bmbt_log_keys(cur, bp, ptr, ptr); | |
1706 | } | |
1707 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1708 | return 0; | |
1709 | } | |
1710 | ||
1711 | /* | |
1712 | * Convert on-disk form of btree root to in-memory form. | |
1713 | */ | |
1714 | void | |
1715 | xfs_bmdr_to_bmbt( | |
1716 | xfs_bmdr_block_t *dblock, | |
1717 | int dblocklen, | |
1718 | xfs_bmbt_block_t *rblock, | |
1719 | int rblocklen) | |
1720 | { | |
1721 | int dmxr; | |
1722 | xfs_bmbt_key_t *fkp; | |
576039cf | 1723 | __be64 *fpp; |
1da177e4 | 1724 | xfs_bmbt_key_t *tkp; |
576039cf | 1725 | __be64 *tpp; |
1da177e4 | 1726 | |
16259e7d CH |
1727 | rblock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC); |
1728 | rblock->bb_level = dblock->bb_level; | |
1729 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); | |
1730 | rblock->bb_numrecs = dblock->bb_numrecs; | |
1731 | rblock->bb_leftsib = cpu_to_be64(NULLDFSBNO); | |
1732 | rblock->bb_rightsib = cpu_to_be64(NULLDFSBNO); | |
1da177e4 LT |
1733 | dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0); |
1734 | fkp = XFS_BTREE_KEY_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr); | |
1735 | tkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen); | |
1736 | fpp = XFS_BTREE_PTR_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr); | |
1737 | tpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen); | |
16259e7d | 1738 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
1da177e4 | 1739 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
576039cf | 1740 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
1da177e4 LT |
1741 | } |
1742 | ||
1743 | /* | |
1744 | * Decrement cursor by one record at the level. | |
1745 | * For nonzero levels the leaf-ward information is untouched. | |
1746 | */ | |
1747 | int /* error */ | |
1748 | xfs_bmbt_decrement( | |
1749 | xfs_btree_cur_t *cur, | |
1750 | int level, | |
1751 | int *stat) /* success/failure */ | |
1752 | { | |
1753 | xfs_bmbt_block_t *block; | |
1754 | xfs_buf_t *bp; | |
1755 | int error; /* error return value */ | |
1756 | #ifdef XFS_BMBT_TRACE | |
1757 | static char fname[] = "xfs_bmbt_decrement"; | |
1758 | #endif | |
1759 | xfs_fsblock_t fsbno; | |
1760 | int lev; | |
1761 | xfs_mount_t *mp; | |
1762 | xfs_trans_t *tp; | |
1763 | ||
1764 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1765 | XFS_BMBT_TRACE_ARGI(cur, level); | |
1766 | ASSERT(level < cur->bc_nlevels); | |
1767 | if (level < cur->bc_nlevels - 1) | |
1768 | xfs_btree_readahead(cur, level, XFS_BTCUR_LEFTRA); | |
1769 | if (--cur->bc_ptrs[level] > 0) { | |
1770 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1771 | *stat = 1; | |
1772 | return 0; | |
1773 | } | |
1774 | block = xfs_bmbt_get_block(cur, level, &bp); | |
1775 | #ifdef DEBUG | |
1776 | if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { | |
1777 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1778 | return error; | |
1779 | } | |
1780 | #endif | |
16259e7d | 1781 | if (be64_to_cpu(block->bb_leftsib) == NULLDFSBNO) { |
1da177e4 LT |
1782 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
1783 | *stat = 0; | |
1784 | return 0; | |
1785 | } | |
1786 | for (lev = level + 1; lev < cur->bc_nlevels; lev++) { | |
1787 | if (--cur->bc_ptrs[lev] > 0) | |
1788 | break; | |
1789 | if (lev < cur->bc_nlevels - 1) | |
1790 | xfs_btree_readahead(cur, lev, XFS_BTCUR_LEFTRA); | |
1791 | } | |
1792 | if (lev == cur->bc_nlevels) { | |
1793 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1794 | *stat = 0; | |
1795 | return 0; | |
1796 | } | |
1797 | tp = cur->bc_tp; | |
1798 | mp = cur->bc_mp; | |
1799 | for (block = xfs_bmbt_get_block(cur, lev, &bp); lev > level; ) { | |
576039cf | 1800 | fsbno = be64_to_cpu(*XFS_BMAP_PTR_IADDR(block, cur->bc_ptrs[lev], cur)); |
1da177e4 LT |
1801 | if ((error = xfs_btree_read_bufl(mp, tp, fsbno, 0, &bp, |
1802 | XFS_BMAP_BTREE_REF))) { | |
1803 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1804 | return error; | |
1805 | } | |
1806 | lev--; | |
1807 | xfs_btree_setbuf(cur, lev, bp); | |
1808 | block = XFS_BUF_TO_BMBT_BLOCK(bp); | |
1809 | if ((error = xfs_btree_check_lblock(cur, block, lev, bp))) { | |
1810 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1811 | return error; | |
1812 | } | |
16259e7d | 1813 | cur->bc_ptrs[lev] = be16_to_cpu(block->bb_numrecs); |
1da177e4 LT |
1814 | } |
1815 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1816 | *stat = 1; | |
1817 | return 0; | |
1818 | } | |
1819 | ||
1820 | /* | |
1821 | * Delete the record pointed to by cur. | |
1822 | */ | |
1823 | int /* error */ | |
1824 | xfs_bmbt_delete( | |
1825 | xfs_btree_cur_t *cur, | |
1826 | int *stat) /* success/failure */ | |
1827 | { | |
1828 | int error; /* error return value */ | |
1829 | #ifdef XFS_BMBT_TRACE | |
1830 | static char fname[] = "xfs_bmbt_delete"; | |
1831 | #endif | |
1832 | int i; | |
1833 | int level; | |
1834 | ||
1835 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
1836 | for (level = 0, i = 2; i == 2; level++) { | |
1837 | if ((error = xfs_bmbt_delrec(cur, level, &i))) { | |
1838 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1839 | return error; | |
1840 | } | |
1841 | } | |
1842 | if (i == 0) { | |
1843 | for (level = 1; level < cur->bc_nlevels; level++) { | |
1844 | if (cur->bc_ptrs[level] == 0) { | |
1845 | if ((error = xfs_bmbt_decrement(cur, level, | |
1846 | &i))) { | |
1847 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
1848 | return error; | |
1849 | } | |
1850 | break; | |
1851 | } | |
1852 | } | |
1853 | } | |
1854 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
1855 | *stat = i; | |
1856 | return 0; | |
1857 | } | |
1858 | ||
1859 | /* | |
1860 | * Convert a compressed bmap extent record to an uncompressed form. | |
1861 | * This code must be in sync with the routines xfs_bmbt_get_startoff, | |
1862 | * xfs_bmbt_get_startblock, xfs_bmbt_get_blockcount and xfs_bmbt_get_state. | |
1863 | */ | |
1864 | ||
1865 | STATIC __inline__ void | |
1866 | __xfs_bmbt_get_all( | |
1867 | __uint64_t l0, | |
1868 | __uint64_t l1, | |
1869 | xfs_bmbt_irec_t *s) | |
1870 | { | |
1871 | int ext_flag; | |
1872 | xfs_exntst_t st; | |
1873 | ||
1874 | ext_flag = (int)(l0 >> (64 - BMBT_EXNTFLAG_BITLEN)); | |
1875 | s->br_startoff = ((xfs_fileoff_t)l0 & | |
1876 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; | |
1877 | #if XFS_BIG_BLKNOS | |
1878 | s->br_startblock = (((xfs_fsblock_t)l0 & XFS_MASK64LO(9)) << 43) | | |
1879 | (((xfs_fsblock_t)l1) >> 21); | |
1880 | #else | |
1881 | #ifdef DEBUG | |
1882 | { | |
1883 | xfs_dfsbno_t b; | |
1884 | ||
1885 | b = (((xfs_dfsbno_t)l0 & XFS_MASK64LO(9)) << 43) | | |
1886 | (((xfs_dfsbno_t)l1) >> 21); | |
1887 | ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b)); | |
1888 | s->br_startblock = (xfs_fsblock_t)b; | |
1889 | } | |
1890 | #else /* !DEBUG */ | |
1891 | s->br_startblock = (xfs_fsblock_t)(((xfs_dfsbno_t)l1) >> 21); | |
1892 | #endif /* DEBUG */ | |
1893 | #endif /* XFS_BIG_BLKNOS */ | |
1894 | s->br_blockcount = (xfs_filblks_t)(l1 & XFS_MASK64LO(21)); | |
1895 | /* This is xfs_extent_state() in-line */ | |
1896 | if (ext_flag) { | |
1897 | ASSERT(s->br_blockcount != 0); /* saved for DMIG */ | |
1898 | st = XFS_EXT_UNWRITTEN; | |
1899 | } else | |
1900 | st = XFS_EXT_NORM; | |
1901 | s->br_state = st; | |
1902 | } | |
1903 | ||
1904 | void | |
1905 | xfs_bmbt_get_all( | |
1906 | xfs_bmbt_rec_t *r, | |
1907 | xfs_bmbt_irec_t *s) | |
1908 | { | |
1909 | __xfs_bmbt_get_all(r->l0, r->l1, s); | |
1910 | } | |
1911 | ||
1912 | /* | |
1913 | * Get the block pointer for the given level of the cursor. | |
1914 | * Fill in the buffer pointer, if applicable. | |
1915 | */ | |
1916 | xfs_bmbt_block_t * | |
1917 | xfs_bmbt_get_block( | |
1918 | xfs_btree_cur_t *cur, | |
1919 | int level, | |
1920 | xfs_buf_t **bpp) | |
1921 | { | |
1922 | xfs_ifork_t *ifp; | |
1923 | xfs_bmbt_block_t *rval; | |
1924 | ||
1925 | if (level < cur->bc_nlevels - 1) { | |
1926 | *bpp = cur->bc_bufs[level]; | |
1927 | rval = XFS_BUF_TO_BMBT_BLOCK(*bpp); | |
1928 | } else { | |
1929 | *bpp = NULL; | |
1930 | ifp = XFS_IFORK_PTR(cur->bc_private.b.ip, | |
1931 | cur->bc_private.b.whichfork); | |
1932 | rval = ifp->if_broot; | |
1933 | } | |
1934 | return rval; | |
1935 | } | |
1936 | ||
1937 | /* | |
1938 | * Extract the blockcount field from an in memory bmap extent record. | |
1939 | */ | |
1940 | xfs_filblks_t | |
1941 | xfs_bmbt_get_blockcount( | |
1942 | xfs_bmbt_rec_t *r) | |
1943 | { | |
1944 | return (xfs_filblks_t)(r->l1 & XFS_MASK64LO(21)); | |
1945 | } | |
1946 | ||
1947 | /* | |
1948 | * Extract the startblock field from an in memory bmap extent record. | |
1949 | */ | |
1950 | xfs_fsblock_t | |
1951 | xfs_bmbt_get_startblock( | |
1952 | xfs_bmbt_rec_t *r) | |
1953 | { | |
1954 | #if XFS_BIG_BLKNOS | |
1955 | return (((xfs_fsblock_t)r->l0 & XFS_MASK64LO(9)) << 43) | | |
1956 | (((xfs_fsblock_t)r->l1) >> 21); | |
1957 | #else | |
1958 | #ifdef DEBUG | |
1959 | xfs_dfsbno_t b; | |
1960 | ||
1961 | b = (((xfs_dfsbno_t)r->l0 & XFS_MASK64LO(9)) << 43) | | |
1962 | (((xfs_dfsbno_t)r->l1) >> 21); | |
1963 | ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b)); | |
1964 | return (xfs_fsblock_t)b; | |
1965 | #else /* !DEBUG */ | |
1966 | return (xfs_fsblock_t)(((xfs_dfsbno_t)r->l1) >> 21); | |
1967 | #endif /* DEBUG */ | |
1968 | #endif /* XFS_BIG_BLKNOS */ | |
1969 | } | |
1970 | ||
1971 | /* | |
1972 | * Extract the startoff field from an in memory bmap extent record. | |
1973 | */ | |
1974 | xfs_fileoff_t | |
1975 | xfs_bmbt_get_startoff( | |
1976 | xfs_bmbt_rec_t *r) | |
1977 | { | |
1978 | return ((xfs_fileoff_t)r->l0 & | |
1979 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; | |
1980 | } | |
1981 | ||
1982 | xfs_exntst_t | |
1983 | xfs_bmbt_get_state( | |
1984 | xfs_bmbt_rec_t *r) | |
1985 | { | |
1986 | int ext_flag; | |
1987 | ||
1988 | ext_flag = (int)((r->l0) >> (64 - BMBT_EXNTFLAG_BITLEN)); | |
1989 | return xfs_extent_state(xfs_bmbt_get_blockcount(r), | |
1990 | ext_flag); | |
1991 | } | |
1992 | ||
f016bad6 | 1993 | #ifndef XFS_NATIVE_HOST |
1da177e4 LT |
1994 | /* Endian flipping versions of the bmbt extraction functions */ |
1995 | void | |
1996 | xfs_bmbt_disk_get_all( | |
1997 | xfs_bmbt_rec_t *r, | |
1998 | xfs_bmbt_irec_t *s) | |
1999 | { | |
2000 | __uint64_t l0, l1; | |
2001 | ||
2002 | l0 = INT_GET(r->l0, ARCH_CONVERT); | |
2003 | l1 = INT_GET(r->l1, ARCH_CONVERT); | |
2004 | ||
2005 | __xfs_bmbt_get_all(l0, l1, s); | |
2006 | } | |
2007 | ||
2008 | /* | |
2009 | * Extract the blockcount field from an on disk bmap extent record. | |
2010 | */ | |
2011 | xfs_filblks_t | |
2012 | xfs_bmbt_disk_get_blockcount( | |
2013 | xfs_bmbt_rec_t *r) | |
2014 | { | |
2015 | return (xfs_filblks_t)(INT_GET(r->l1, ARCH_CONVERT) & XFS_MASK64LO(21)); | |
2016 | } | |
2017 | ||
2018 | /* | |
2019 | * Extract the startblock field from an on disk bmap extent record. | |
2020 | */ | |
2021 | xfs_fsblock_t | |
2022 | xfs_bmbt_disk_get_startblock( | |
2023 | xfs_bmbt_rec_t *r) | |
2024 | { | |
2025 | #if XFS_BIG_BLKNOS | |
2026 | return (((xfs_fsblock_t)INT_GET(r->l0, ARCH_CONVERT) & XFS_MASK64LO(9)) << 43) | | |
2027 | (((xfs_fsblock_t)INT_GET(r->l1, ARCH_CONVERT)) >> 21); | |
2028 | #else | |
2029 | #ifdef DEBUG | |
2030 | xfs_dfsbno_t b; | |
2031 | ||
2032 | b = (((xfs_dfsbno_t)INT_GET(r->l0, ARCH_CONVERT) & XFS_MASK64LO(9)) << 43) | | |
2033 | (((xfs_dfsbno_t)INT_GET(r->l1, ARCH_CONVERT)) >> 21); | |
2034 | ASSERT((b >> 32) == 0 || ISNULLDSTARTBLOCK(b)); | |
2035 | return (xfs_fsblock_t)b; | |
2036 | #else /* !DEBUG */ | |
2037 | return (xfs_fsblock_t)(((xfs_dfsbno_t)INT_GET(r->l1, ARCH_CONVERT)) >> 21); | |
2038 | #endif /* DEBUG */ | |
2039 | #endif /* XFS_BIG_BLKNOS */ | |
2040 | } | |
2041 | ||
2042 | /* | |
2043 | * Extract the startoff field from a disk format bmap extent record. | |
2044 | */ | |
2045 | xfs_fileoff_t | |
2046 | xfs_bmbt_disk_get_startoff( | |
2047 | xfs_bmbt_rec_t *r) | |
2048 | { | |
2049 | return ((xfs_fileoff_t)INT_GET(r->l0, ARCH_CONVERT) & | |
2050 | XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN)) >> 9; | |
2051 | } | |
2052 | ||
2053 | xfs_exntst_t | |
2054 | xfs_bmbt_disk_get_state( | |
2055 | xfs_bmbt_rec_t *r) | |
2056 | { | |
2057 | int ext_flag; | |
2058 | ||
2059 | ext_flag = (int)((INT_GET(r->l0, ARCH_CONVERT)) >> (64 - BMBT_EXNTFLAG_BITLEN)); | |
2060 | return xfs_extent_state(xfs_bmbt_disk_get_blockcount(r), | |
2061 | ext_flag); | |
2062 | } | |
f016bad6 | 2063 | #endif /* XFS_NATIVE_HOST */ |
1da177e4 LT |
2064 | |
2065 | ||
2066 | /* | |
2067 | * Increment cursor by one record at the level. | |
2068 | * For nonzero levels the leaf-ward information is untouched. | |
2069 | */ | |
2070 | int /* error */ | |
2071 | xfs_bmbt_increment( | |
2072 | xfs_btree_cur_t *cur, | |
2073 | int level, | |
2074 | int *stat) /* success/failure */ | |
2075 | { | |
2076 | xfs_bmbt_block_t *block; | |
2077 | xfs_buf_t *bp; | |
2078 | int error; /* error return value */ | |
2079 | #ifdef XFS_BMBT_TRACE | |
2080 | static char fname[] = "xfs_bmbt_increment"; | |
2081 | #endif | |
2082 | xfs_fsblock_t fsbno; | |
2083 | int lev; | |
2084 | xfs_mount_t *mp; | |
2085 | xfs_trans_t *tp; | |
2086 | ||
2087 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
2088 | XFS_BMBT_TRACE_ARGI(cur, level); | |
2089 | ASSERT(level < cur->bc_nlevels); | |
2090 | if (level < cur->bc_nlevels - 1) | |
2091 | xfs_btree_readahead(cur, level, XFS_BTCUR_RIGHTRA); | |
2092 | block = xfs_bmbt_get_block(cur, level, &bp); | |
2093 | #ifdef DEBUG | |
2094 | if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { | |
2095 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2096 | return error; | |
2097 | } | |
2098 | #endif | |
16259e7d | 2099 | if (++cur->bc_ptrs[level] <= be16_to_cpu(block->bb_numrecs)) { |
1da177e4 LT |
2100 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
2101 | *stat = 1; | |
2102 | return 0; | |
2103 | } | |
16259e7d | 2104 | if (be64_to_cpu(block->bb_rightsib) == NULLDFSBNO) { |
1da177e4 LT |
2105 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
2106 | *stat = 0; | |
2107 | return 0; | |
2108 | } | |
2109 | for (lev = level + 1; lev < cur->bc_nlevels; lev++) { | |
2110 | block = xfs_bmbt_get_block(cur, lev, &bp); | |
2111 | #ifdef DEBUG | |
2112 | if ((error = xfs_btree_check_lblock(cur, block, lev, bp))) { | |
2113 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2114 | return error; | |
2115 | } | |
2116 | #endif | |
16259e7d | 2117 | if (++cur->bc_ptrs[lev] <= be16_to_cpu(block->bb_numrecs)) |
1da177e4 LT |
2118 | break; |
2119 | if (lev < cur->bc_nlevels - 1) | |
2120 | xfs_btree_readahead(cur, lev, XFS_BTCUR_RIGHTRA); | |
2121 | } | |
2122 | if (lev == cur->bc_nlevels) { | |
2123 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2124 | *stat = 0; | |
2125 | return 0; | |
2126 | } | |
2127 | tp = cur->bc_tp; | |
2128 | mp = cur->bc_mp; | |
2129 | for (block = xfs_bmbt_get_block(cur, lev, &bp); lev > level; ) { | |
576039cf | 2130 | fsbno = be64_to_cpu(*XFS_BMAP_PTR_IADDR(block, cur->bc_ptrs[lev], cur)); |
1da177e4 LT |
2131 | if ((error = xfs_btree_read_bufl(mp, tp, fsbno, 0, &bp, |
2132 | XFS_BMAP_BTREE_REF))) { | |
2133 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2134 | return error; | |
2135 | } | |
2136 | lev--; | |
2137 | xfs_btree_setbuf(cur, lev, bp); | |
2138 | block = XFS_BUF_TO_BMBT_BLOCK(bp); | |
2139 | if ((error = xfs_btree_check_lblock(cur, block, lev, bp))) { | |
2140 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2141 | return error; | |
2142 | } | |
2143 | cur->bc_ptrs[lev] = 1; | |
2144 | } | |
2145 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2146 | *stat = 1; | |
2147 | return 0; | |
2148 | } | |
2149 | ||
2150 | /* | |
2151 | * Insert the current record at the point referenced by cur. | |
2152 | */ | |
2153 | int /* error */ | |
2154 | xfs_bmbt_insert( | |
2155 | xfs_btree_cur_t *cur, | |
2156 | int *stat) /* success/failure */ | |
2157 | { | |
2158 | int error; /* error return value */ | |
2159 | #ifdef XFS_BMBT_TRACE | |
2160 | static char fname[] = "xfs_bmbt_insert"; | |
2161 | #endif | |
2162 | int i; | |
2163 | int level; | |
2164 | xfs_fsblock_t nbno; | |
2165 | xfs_btree_cur_t *ncur; | |
2166 | xfs_bmbt_rec_t nrec; | |
2167 | xfs_btree_cur_t *pcur; | |
2168 | ||
2169 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
2170 | level = 0; | |
2171 | nbno = NULLFSBLOCK; | |
2172 | xfs_bmbt_disk_set_all(&nrec, &cur->bc_rec.b); | |
1121b219 | 2173 | ncur = NULL; |
1da177e4 LT |
2174 | pcur = cur; |
2175 | do { | |
2176 | if ((error = xfs_bmbt_insrec(pcur, level++, &nbno, &nrec, &ncur, | |
2177 | &i))) { | |
2178 | if (pcur != cur) | |
2179 | xfs_btree_del_cursor(pcur, XFS_BTREE_ERROR); | |
2180 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2181 | return error; | |
2182 | } | |
2183 | XFS_WANT_CORRUPTED_GOTO(i == 1, error0); | |
2184 | if (pcur != cur && (ncur || nbno == NULLFSBLOCK)) { | |
2185 | cur->bc_nlevels = pcur->bc_nlevels; | |
2186 | cur->bc_private.b.allocated += | |
2187 | pcur->bc_private.b.allocated; | |
2188 | pcur->bc_private.b.allocated = 0; | |
2189 | ASSERT((cur->bc_private.b.firstblock != NULLFSBLOCK) || | |
2190 | (cur->bc_private.b.ip->i_d.di_flags & | |
2191 | XFS_DIFLAG_REALTIME)); | |
2192 | cur->bc_private.b.firstblock = | |
2193 | pcur->bc_private.b.firstblock; | |
2194 | ASSERT(cur->bc_private.b.flist == | |
2195 | pcur->bc_private.b.flist); | |
2196 | xfs_btree_del_cursor(pcur, XFS_BTREE_NOERROR); | |
2197 | } | |
2198 | if (ncur) { | |
2199 | pcur = ncur; | |
1121b219 | 2200 | ncur = NULL; |
1da177e4 LT |
2201 | } |
2202 | } while (nbno != NULLFSBLOCK); | |
2203 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2204 | *stat = i; | |
2205 | return 0; | |
2206 | error0: | |
2207 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2208 | return error; | |
2209 | } | |
2210 | ||
2211 | /* | |
2212 | * Log fields from the btree block header. | |
2213 | */ | |
2214 | void | |
2215 | xfs_bmbt_log_block( | |
2216 | xfs_btree_cur_t *cur, | |
2217 | xfs_buf_t *bp, | |
2218 | int fields) | |
2219 | { | |
2220 | int first; | |
2221 | #ifdef XFS_BMBT_TRACE | |
2222 | static char fname[] = "xfs_bmbt_log_block"; | |
2223 | #endif | |
2224 | int last; | |
2225 | xfs_trans_t *tp; | |
2226 | static const short offsets[] = { | |
2227 | offsetof(xfs_bmbt_block_t, bb_magic), | |
2228 | offsetof(xfs_bmbt_block_t, bb_level), | |
2229 | offsetof(xfs_bmbt_block_t, bb_numrecs), | |
2230 | offsetof(xfs_bmbt_block_t, bb_leftsib), | |
2231 | offsetof(xfs_bmbt_block_t, bb_rightsib), | |
2232 | sizeof(xfs_bmbt_block_t) | |
2233 | }; | |
2234 | ||
2235 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
2236 | XFS_BMBT_TRACE_ARGBI(cur, bp, fields); | |
2237 | tp = cur->bc_tp; | |
2238 | if (bp) { | |
2239 | xfs_btree_offsets(fields, offsets, XFS_BB_NUM_BITS, &first, | |
2240 | &last); | |
2241 | xfs_trans_log_buf(tp, bp, first, last); | |
2242 | } else | |
2243 | xfs_trans_log_inode(tp, cur->bc_private.b.ip, | |
2244 | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork)); | |
2245 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2246 | } | |
2247 | ||
2248 | /* | |
2249 | * Log record values from the btree block. | |
2250 | */ | |
2251 | void | |
2252 | xfs_bmbt_log_recs( | |
2253 | xfs_btree_cur_t *cur, | |
2254 | xfs_buf_t *bp, | |
2255 | int rfirst, | |
2256 | int rlast) | |
2257 | { | |
2258 | xfs_bmbt_block_t *block; | |
2259 | int first; | |
2260 | #ifdef XFS_BMBT_TRACE | |
2261 | static char fname[] = "xfs_bmbt_log_recs"; | |
2262 | #endif | |
2263 | int last; | |
2264 | xfs_bmbt_rec_t *rp; | |
2265 | xfs_trans_t *tp; | |
2266 | ||
2267 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
2268 | XFS_BMBT_TRACE_ARGBII(cur, bp, rfirst, rlast); | |
2269 | ASSERT(bp); | |
2270 | tp = cur->bc_tp; | |
2271 | block = XFS_BUF_TO_BMBT_BLOCK(bp); | |
2272 | rp = XFS_BMAP_REC_DADDR(block, 1, cur); | |
2273 | first = (int)((xfs_caddr_t)&rp[rfirst - 1] - (xfs_caddr_t)block); | |
2274 | last = (int)(((xfs_caddr_t)&rp[rlast] - 1) - (xfs_caddr_t)block); | |
2275 | xfs_trans_log_buf(tp, bp, first, last); | |
2276 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2277 | } | |
2278 | ||
2279 | int /* error */ | |
2280 | xfs_bmbt_lookup_eq( | |
2281 | xfs_btree_cur_t *cur, | |
2282 | xfs_fileoff_t off, | |
2283 | xfs_fsblock_t bno, | |
2284 | xfs_filblks_t len, | |
2285 | int *stat) /* success/failure */ | |
2286 | { | |
2287 | cur->bc_rec.b.br_startoff = off; | |
2288 | cur->bc_rec.b.br_startblock = bno; | |
2289 | cur->bc_rec.b.br_blockcount = len; | |
2290 | return xfs_bmbt_lookup(cur, XFS_LOOKUP_EQ, stat); | |
2291 | } | |
2292 | ||
2293 | int /* error */ | |
2294 | xfs_bmbt_lookup_ge( | |
2295 | xfs_btree_cur_t *cur, | |
2296 | xfs_fileoff_t off, | |
2297 | xfs_fsblock_t bno, | |
2298 | xfs_filblks_t len, | |
2299 | int *stat) /* success/failure */ | |
2300 | { | |
2301 | cur->bc_rec.b.br_startoff = off; | |
2302 | cur->bc_rec.b.br_startblock = bno; | |
2303 | cur->bc_rec.b.br_blockcount = len; | |
2304 | return xfs_bmbt_lookup(cur, XFS_LOOKUP_GE, stat); | |
2305 | } | |
2306 | ||
1da177e4 LT |
2307 | /* |
2308 | * Give the bmap btree a new root block. Copy the old broot contents | |
2309 | * down into a real block and make the broot point to it. | |
2310 | */ | |
2311 | int /* error */ | |
2312 | xfs_bmbt_newroot( | |
2313 | xfs_btree_cur_t *cur, /* btree cursor */ | |
2314 | int *logflags, /* logging flags for inode */ | |
2315 | int *stat) /* return status - 0 fail */ | |
2316 | { | |
2317 | xfs_alloc_arg_t args; /* allocation arguments */ | |
2318 | xfs_bmbt_block_t *block; /* bmap btree block */ | |
2319 | xfs_buf_t *bp; /* buffer for block */ | |
2320 | xfs_bmbt_block_t *cblock; /* child btree block */ | |
2321 | xfs_bmbt_key_t *ckp; /* child key pointer */ | |
2322 | xfs_bmbt_ptr_t *cpp; /* child ptr pointer */ | |
2323 | int error; /* error return code */ | |
2324 | #ifdef XFS_BMBT_TRACE | |
2325 | static char fname[] = "xfs_bmbt_newroot"; | |
2326 | #endif | |
2327 | #ifdef DEBUG | |
2328 | int i; /* loop counter */ | |
2329 | #endif | |
2330 | xfs_bmbt_key_t *kp; /* pointer to bmap btree key */ | |
2331 | int level; /* btree level */ | |
2332 | xfs_bmbt_ptr_t *pp; /* pointer to bmap block addr */ | |
2333 | ||
2334 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
2335 | level = cur->bc_nlevels - 1; | |
2336 | block = xfs_bmbt_get_block(cur, level, &bp); | |
2337 | /* | |
2338 | * Copy the root into a real block. | |
2339 | */ | |
2340 | args.mp = cur->bc_mp; | |
2341 | pp = XFS_BMAP_PTR_IADDR(block, 1, cur); | |
2342 | args.tp = cur->bc_tp; | |
2343 | args.fsbno = cur->bc_private.b.firstblock; | |
2344 | args.mod = args.minleft = args.alignment = args.total = args.isfl = | |
2345 | args.userdata = args.minalignslop = 0; | |
2346 | args.minlen = args.maxlen = args.prod = 1; | |
2347 | args.wasdel = cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL; | |
d210a28c | 2348 | args.firstblock = args.fsbno; |
1da177e4 LT |
2349 | if (args.fsbno == NULLFSBLOCK) { |
2350 | #ifdef DEBUG | |
b113bcb8 | 2351 | if ((error = xfs_btree_check_lptr_disk(cur, *pp, level))) { |
1da177e4 LT |
2352 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
2353 | return error; | |
2354 | } | |
2355 | #endif | |
576039cf | 2356 | args.fsbno = be64_to_cpu(*pp); |
1da177e4 | 2357 | args.type = XFS_ALLOCTYPE_START_BNO; |
d210a28c | 2358 | } else |
1da177e4 LT |
2359 | args.type = XFS_ALLOCTYPE_NEAR_BNO; |
2360 | if ((error = xfs_alloc_vextent(&args))) { | |
2361 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2362 | return error; | |
2363 | } | |
2364 | if (args.fsbno == NULLFSBLOCK) { | |
2365 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2366 | *stat = 0; | |
2367 | return 0; | |
2368 | } | |
2369 | ASSERT(args.len == 1); | |
2370 | cur->bc_private.b.firstblock = args.fsbno; | |
2371 | cur->bc_private.b.allocated++; | |
2372 | cur->bc_private.b.ip->i_d.di_nblocks++; | |
2373 | XFS_TRANS_MOD_DQUOT_BYINO(args.mp, args.tp, cur->bc_private.b.ip, | |
2374 | XFS_TRANS_DQ_BCOUNT, 1L); | |
2375 | bp = xfs_btree_get_bufl(args.mp, cur->bc_tp, args.fsbno, 0); | |
2376 | cblock = XFS_BUF_TO_BMBT_BLOCK(bp); | |
2377 | *cblock = *block; | |
16259e7d CH |
2378 | be16_add(&block->bb_level, 1); |
2379 | block->bb_numrecs = cpu_to_be16(1); | |
1da177e4 LT |
2380 | cur->bc_nlevels++; |
2381 | cur->bc_ptrs[level + 1] = 1; | |
2382 | kp = XFS_BMAP_KEY_IADDR(block, 1, cur); | |
2383 | ckp = XFS_BMAP_KEY_IADDR(cblock, 1, cur); | |
16259e7d | 2384 | memcpy(ckp, kp, be16_to_cpu(cblock->bb_numrecs) * sizeof(*kp)); |
1da177e4 LT |
2385 | cpp = XFS_BMAP_PTR_IADDR(cblock, 1, cur); |
2386 | #ifdef DEBUG | |
16259e7d | 2387 | for (i = 0; i < be16_to_cpu(cblock->bb_numrecs); i++) { |
b113bcb8 | 2388 | if ((error = xfs_btree_check_lptr_disk(cur, pp[i], level))) { |
1da177e4 LT |
2389 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
2390 | return error; | |
2391 | } | |
2392 | } | |
2393 | #endif | |
16259e7d | 2394 | memcpy(cpp, pp, be16_to_cpu(cblock->bb_numrecs) * sizeof(*pp)); |
1da177e4 | 2395 | #ifdef DEBUG |
576039cf | 2396 | if ((error = xfs_btree_check_lptr(cur, args.fsbno, level))) { |
1da177e4 LT |
2397 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); |
2398 | return error; | |
2399 | } | |
2400 | #endif | |
576039cf | 2401 | *pp = cpu_to_be64(args.fsbno); |
16259e7d | 2402 | xfs_iroot_realloc(cur->bc_private.b.ip, 1 - be16_to_cpu(cblock->bb_numrecs), |
1da177e4 LT |
2403 | cur->bc_private.b.whichfork); |
2404 | xfs_btree_setbuf(cur, level, bp); | |
2405 | /* | |
2406 | * Do all this logging at the end so that | |
2407 | * the root is at the right level. | |
2408 | */ | |
2409 | xfs_bmbt_log_block(cur, bp, XFS_BB_ALL_BITS); | |
16259e7d CH |
2410 | xfs_bmbt_log_keys(cur, bp, 1, be16_to_cpu(cblock->bb_numrecs)); |
2411 | xfs_bmbt_log_ptrs(cur, bp, 1, be16_to_cpu(cblock->bb_numrecs)); | |
1da177e4 LT |
2412 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); |
2413 | *logflags |= | |
2414 | XFS_ILOG_CORE | XFS_ILOG_FBROOT(cur->bc_private.b.whichfork); | |
2415 | *stat = 1; | |
2416 | return 0; | |
2417 | } | |
2418 | ||
2419 | /* | |
2420 | * Set all the fields in a bmap extent record from the uncompressed form. | |
2421 | */ | |
2422 | void | |
2423 | xfs_bmbt_set_all( | |
2424 | xfs_bmbt_rec_t *r, | |
2425 | xfs_bmbt_irec_t *s) | |
2426 | { | |
2427 | int extent_flag; | |
2428 | ||
2429 | ASSERT((s->br_state == XFS_EXT_NORM) || | |
2430 | (s->br_state == XFS_EXT_UNWRITTEN)); | |
2431 | extent_flag = (s->br_state == XFS_EXT_NORM) ? 0 : 1; | |
2432 | ASSERT((s->br_startoff & XFS_MASK64HI(9)) == 0); | |
2433 | ASSERT((s->br_blockcount & XFS_MASK64HI(43)) == 0); | |
2434 | #if XFS_BIG_BLKNOS | |
2435 | ASSERT((s->br_startblock & XFS_MASK64HI(12)) == 0); | |
2436 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2437 | ((xfs_bmbt_rec_base_t)s->br_startoff << 9) | | |
2438 | ((xfs_bmbt_rec_base_t)s->br_startblock >> 43); | |
2439 | r->l1 = ((xfs_bmbt_rec_base_t)s->br_startblock << 21) | | |
2440 | ((xfs_bmbt_rec_base_t)s->br_blockcount & | |
2441 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2442 | #else /* !XFS_BIG_BLKNOS */ | |
2443 | if (ISNULLSTARTBLOCK(s->br_startblock)) { | |
2444 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2445 | ((xfs_bmbt_rec_base_t)s->br_startoff << 9) | | |
2446 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9); | |
2447 | r->l1 = XFS_MASK64HI(11) | | |
2448 | ((xfs_bmbt_rec_base_t)s->br_startblock << 21) | | |
2449 | ((xfs_bmbt_rec_base_t)s->br_blockcount & | |
2450 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2451 | } else { | |
2452 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2453 | ((xfs_bmbt_rec_base_t)s->br_startoff << 9); | |
2454 | r->l1 = ((xfs_bmbt_rec_base_t)s->br_startblock << 21) | | |
2455 | ((xfs_bmbt_rec_base_t)s->br_blockcount & | |
2456 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2457 | } | |
2458 | #endif /* XFS_BIG_BLKNOS */ | |
2459 | } | |
2460 | ||
2461 | /* | |
2462 | * Set all the fields in a bmap extent record from the arguments. | |
2463 | */ | |
2464 | void | |
2465 | xfs_bmbt_set_allf( | |
2466 | xfs_bmbt_rec_t *r, | |
2467 | xfs_fileoff_t o, | |
2468 | xfs_fsblock_t b, | |
2469 | xfs_filblks_t c, | |
2470 | xfs_exntst_t v) | |
2471 | { | |
2472 | int extent_flag; | |
2473 | ||
2474 | ASSERT((v == XFS_EXT_NORM) || (v == XFS_EXT_UNWRITTEN)); | |
2475 | extent_flag = (v == XFS_EXT_NORM) ? 0 : 1; | |
2476 | ASSERT((o & XFS_MASK64HI(64-BMBT_STARTOFF_BITLEN)) == 0); | |
2477 | ASSERT((c & XFS_MASK64HI(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); | |
2478 | #if XFS_BIG_BLKNOS | |
2479 | ASSERT((b & XFS_MASK64HI(64-BMBT_STARTBLOCK_BITLEN)) == 0); | |
2480 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2481 | ((xfs_bmbt_rec_base_t)o << 9) | | |
2482 | ((xfs_bmbt_rec_base_t)b >> 43); | |
2483 | r->l1 = ((xfs_bmbt_rec_base_t)b << 21) | | |
2484 | ((xfs_bmbt_rec_base_t)c & | |
2485 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2486 | #else /* !XFS_BIG_BLKNOS */ | |
2487 | if (ISNULLSTARTBLOCK(b)) { | |
2488 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2489 | ((xfs_bmbt_rec_base_t)o << 9) | | |
2490 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9); | |
2491 | r->l1 = XFS_MASK64HI(11) | | |
2492 | ((xfs_bmbt_rec_base_t)b << 21) | | |
2493 | ((xfs_bmbt_rec_base_t)c & | |
2494 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2495 | } else { | |
2496 | r->l0 = ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2497 | ((xfs_bmbt_rec_base_t)o << 9); | |
2498 | r->l1 = ((xfs_bmbt_rec_base_t)b << 21) | | |
2499 | ((xfs_bmbt_rec_base_t)c & | |
2500 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2501 | } | |
2502 | #endif /* XFS_BIG_BLKNOS */ | |
2503 | } | |
2504 | ||
f016bad6 | 2505 | #ifndef XFS_NATIVE_HOST |
1da177e4 LT |
2506 | /* |
2507 | * Set all the fields in a bmap extent record from the uncompressed form. | |
2508 | */ | |
2509 | void | |
2510 | xfs_bmbt_disk_set_all( | |
2511 | xfs_bmbt_rec_t *r, | |
2512 | xfs_bmbt_irec_t *s) | |
2513 | { | |
2514 | int extent_flag; | |
2515 | ||
2516 | ASSERT((s->br_state == XFS_EXT_NORM) || | |
2517 | (s->br_state == XFS_EXT_UNWRITTEN)); | |
2518 | extent_flag = (s->br_state == XFS_EXT_NORM) ? 0 : 1; | |
2519 | ASSERT((s->br_startoff & XFS_MASK64HI(9)) == 0); | |
2520 | ASSERT((s->br_blockcount & XFS_MASK64HI(43)) == 0); | |
2521 | #if XFS_BIG_BLKNOS | |
2522 | ASSERT((s->br_startblock & XFS_MASK64HI(12)) == 0); | |
2523 | INT_SET(r->l0, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2524 | ((xfs_bmbt_rec_base_t)s->br_startoff << 9) | | |
2525 | ((xfs_bmbt_rec_base_t)s->br_startblock >> 43)); | |
2526 | INT_SET(r->l1, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)s->br_startblock << 21) | | |
2527 | ((xfs_bmbt_rec_base_t)s->br_blockcount & | |
2528 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); | |
2529 | #else /* !XFS_BIG_BLKNOS */ | |
2530 | if (ISNULLSTARTBLOCK(s->br_startblock)) { | |
2531 | INT_SET(r->l0, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2532 | ((xfs_bmbt_rec_base_t)s->br_startoff << 9) | | |
2533 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9)); | |
2534 | INT_SET(r->l1, ARCH_CONVERT, XFS_MASK64HI(11) | | |
2535 | ((xfs_bmbt_rec_base_t)s->br_startblock << 21) | | |
2536 | ((xfs_bmbt_rec_base_t)s->br_blockcount & | |
2537 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); | |
2538 | } else { | |
2539 | INT_SET(r->l0, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2540 | ((xfs_bmbt_rec_base_t)s->br_startoff << 9)); | |
2541 | INT_SET(r->l1, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)s->br_startblock << 21) | | |
2542 | ((xfs_bmbt_rec_base_t)s->br_blockcount & | |
2543 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); | |
2544 | } | |
2545 | #endif /* XFS_BIG_BLKNOS */ | |
2546 | } | |
2547 | ||
2548 | /* | |
2549 | * Set all the fields in a disk format bmap extent record from the arguments. | |
2550 | */ | |
2551 | void | |
2552 | xfs_bmbt_disk_set_allf( | |
2553 | xfs_bmbt_rec_t *r, | |
2554 | xfs_fileoff_t o, | |
2555 | xfs_fsblock_t b, | |
2556 | xfs_filblks_t c, | |
2557 | xfs_exntst_t v) | |
2558 | { | |
2559 | int extent_flag; | |
2560 | ||
2561 | ASSERT((v == XFS_EXT_NORM) || (v == XFS_EXT_UNWRITTEN)); | |
2562 | extent_flag = (v == XFS_EXT_NORM) ? 0 : 1; | |
2563 | ASSERT((o & XFS_MASK64HI(64-BMBT_STARTOFF_BITLEN)) == 0); | |
2564 | ASSERT((c & XFS_MASK64HI(64-BMBT_BLOCKCOUNT_BITLEN)) == 0); | |
2565 | #if XFS_BIG_BLKNOS | |
2566 | ASSERT((b & XFS_MASK64HI(64-BMBT_STARTBLOCK_BITLEN)) == 0); | |
2567 | INT_SET(r->l0, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2568 | ((xfs_bmbt_rec_base_t)o << 9) | | |
2569 | ((xfs_bmbt_rec_base_t)b >> 43)); | |
2570 | INT_SET(r->l1, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)b << 21) | | |
2571 | ((xfs_bmbt_rec_base_t)c & | |
2572 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); | |
2573 | #else /* !XFS_BIG_BLKNOS */ | |
2574 | if (ISNULLSTARTBLOCK(b)) { | |
2575 | INT_SET(r->l0, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2576 | ((xfs_bmbt_rec_base_t)o << 9) | | |
2577 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(9)); | |
2578 | INT_SET(r->l1, ARCH_CONVERT, XFS_MASK64HI(11) | | |
2579 | ((xfs_bmbt_rec_base_t)b << 21) | | |
2580 | ((xfs_bmbt_rec_base_t)c & | |
2581 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); | |
2582 | } else { | |
2583 | INT_SET(r->l0, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)extent_flag << 63) | | |
2584 | ((xfs_bmbt_rec_base_t)o << 9)); | |
2585 | INT_SET(r->l1, ARCH_CONVERT, ((xfs_bmbt_rec_base_t)b << 21) | | |
2586 | ((xfs_bmbt_rec_base_t)c & | |
2587 | (xfs_bmbt_rec_base_t)XFS_MASK64LO(21))); | |
2588 | } | |
2589 | #endif /* XFS_BIG_BLKNOS */ | |
2590 | } | |
f016bad6 | 2591 | #endif /* XFS_NATIVE_HOST */ |
1da177e4 LT |
2592 | |
2593 | /* | |
2594 | * Set the blockcount field in a bmap extent record. | |
2595 | */ | |
2596 | void | |
2597 | xfs_bmbt_set_blockcount( | |
2598 | xfs_bmbt_rec_t *r, | |
2599 | xfs_filblks_t v) | |
2600 | { | |
2601 | ASSERT((v & XFS_MASK64HI(43)) == 0); | |
2602 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64HI(43)) | | |
2603 | (xfs_bmbt_rec_base_t)(v & XFS_MASK64LO(21)); | |
2604 | } | |
2605 | ||
2606 | /* | |
2607 | * Set the startblock field in a bmap extent record. | |
2608 | */ | |
2609 | void | |
2610 | xfs_bmbt_set_startblock( | |
2611 | xfs_bmbt_rec_t *r, | |
2612 | xfs_fsblock_t v) | |
2613 | { | |
2614 | #if XFS_BIG_BLKNOS | |
2615 | ASSERT((v & XFS_MASK64HI(12)) == 0); | |
2616 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t)XFS_MASK64HI(55)) | | |
2617 | (xfs_bmbt_rec_base_t)(v >> 43); | |
2618 | r->l1 = (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)) | | |
2619 | (xfs_bmbt_rec_base_t)(v << 21); | |
2620 | #else /* !XFS_BIG_BLKNOS */ | |
2621 | if (ISNULLSTARTBLOCK(v)) { | |
2622 | r->l0 |= (xfs_bmbt_rec_base_t)XFS_MASK64LO(9); | |
2623 | r->l1 = (xfs_bmbt_rec_base_t)XFS_MASK64HI(11) | | |
2624 | ((xfs_bmbt_rec_base_t)v << 21) | | |
2625 | (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2626 | } else { | |
2627 | r->l0 &= ~(xfs_bmbt_rec_base_t)XFS_MASK64LO(9); | |
2628 | r->l1 = ((xfs_bmbt_rec_base_t)v << 21) | | |
2629 | (r->l1 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(21)); | |
2630 | } | |
2631 | #endif /* XFS_BIG_BLKNOS */ | |
2632 | } | |
2633 | ||
2634 | /* | |
2635 | * Set the startoff field in a bmap extent record. | |
2636 | */ | |
2637 | void | |
2638 | xfs_bmbt_set_startoff( | |
2639 | xfs_bmbt_rec_t *r, | |
2640 | xfs_fileoff_t v) | |
2641 | { | |
2642 | ASSERT((v & XFS_MASK64HI(9)) == 0); | |
2643 | r->l0 = (r->l0 & (xfs_bmbt_rec_base_t) XFS_MASK64HI(1)) | | |
2644 | ((xfs_bmbt_rec_base_t)v << 9) | | |
2645 | (r->l0 & (xfs_bmbt_rec_base_t)XFS_MASK64LO(9)); | |
2646 | } | |
2647 | ||
2648 | /* | |
2649 | * Set the extent state field in a bmap extent record. | |
2650 | */ | |
2651 | void | |
2652 | xfs_bmbt_set_state( | |
2653 | xfs_bmbt_rec_t *r, | |
2654 | xfs_exntst_t v) | |
2655 | { | |
2656 | ASSERT(v == XFS_EXT_NORM || v == XFS_EXT_UNWRITTEN); | |
2657 | if (v == XFS_EXT_NORM) | |
2658 | r->l0 &= XFS_MASK64LO(64 - BMBT_EXNTFLAG_BITLEN); | |
2659 | else | |
2660 | r->l0 |= XFS_MASK64HI(BMBT_EXNTFLAG_BITLEN); | |
2661 | } | |
2662 | ||
2663 | /* | |
2664 | * Convert in-memory form of btree root to on-disk form. | |
2665 | */ | |
2666 | void | |
2667 | xfs_bmbt_to_bmdr( | |
2668 | xfs_bmbt_block_t *rblock, | |
2669 | int rblocklen, | |
2670 | xfs_bmdr_block_t *dblock, | |
2671 | int dblocklen) | |
2672 | { | |
2673 | int dmxr; | |
2674 | xfs_bmbt_key_t *fkp; | |
576039cf | 2675 | __be64 *fpp; |
1da177e4 | 2676 | xfs_bmbt_key_t *tkp; |
576039cf | 2677 | __be64 *tpp; |
1da177e4 | 2678 | |
16259e7d CH |
2679 | ASSERT(be32_to_cpu(rblock->bb_magic) == XFS_BMAP_MAGIC); |
2680 | ASSERT(be64_to_cpu(rblock->bb_leftsib) == NULLDFSBNO); | |
2681 | ASSERT(be64_to_cpu(rblock->bb_rightsib) == NULLDFSBNO); | |
2682 | ASSERT(be16_to_cpu(rblock->bb_level) > 0); | |
2683 | dblock->bb_level = rblock->bb_level; | |
2684 | dblock->bb_numrecs = rblock->bb_numrecs; | |
1da177e4 LT |
2685 | dmxr = (int)XFS_BTREE_BLOCK_MAXRECS(dblocklen, xfs_bmdr, 0); |
2686 | fkp = XFS_BMAP_BROOT_KEY_ADDR(rblock, 1, rblocklen); | |
2687 | tkp = XFS_BTREE_KEY_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr); | |
2688 | fpp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, rblocklen); | |
2689 | tpp = XFS_BTREE_PTR_ADDR(dblocklen, xfs_bmdr, dblock, 1, dmxr); | |
16259e7d | 2690 | dmxr = be16_to_cpu(dblock->bb_numrecs); |
1da177e4 | 2691 | memcpy(tkp, fkp, sizeof(*fkp) * dmxr); |
576039cf | 2692 | memcpy(tpp, fpp, sizeof(*fpp) * dmxr); |
1da177e4 LT |
2693 | } |
2694 | ||
2695 | /* | |
2696 | * Update the record to the passed values. | |
2697 | */ | |
2698 | int | |
2699 | xfs_bmbt_update( | |
2700 | xfs_btree_cur_t *cur, | |
2701 | xfs_fileoff_t off, | |
2702 | xfs_fsblock_t bno, | |
2703 | xfs_filblks_t len, | |
2704 | xfs_exntst_t state) | |
2705 | { | |
2706 | xfs_bmbt_block_t *block; | |
2707 | xfs_buf_t *bp; | |
2708 | int error; | |
2709 | #ifdef XFS_BMBT_TRACE | |
2710 | static char fname[] = "xfs_bmbt_update"; | |
2711 | #endif | |
2712 | xfs_bmbt_key_t key; | |
2713 | int ptr; | |
2714 | xfs_bmbt_rec_t *rp; | |
2715 | ||
2716 | XFS_BMBT_TRACE_CURSOR(cur, ENTRY); | |
2717 | XFS_BMBT_TRACE_ARGFFFI(cur, (xfs_dfiloff_t)off, (xfs_dfsbno_t)bno, | |
2718 | (xfs_dfilblks_t)len, (int)state); | |
2719 | block = xfs_bmbt_get_block(cur, 0, &bp); | |
2720 | #ifdef DEBUG | |
2721 | if ((error = xfs_btree_check_lblock(cur, block, 0, bp))) { | |
2722 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2723 | return error; | |
2724 | } | |
2725 | #endif | |
2726 | ptr = cur->bc_ptrs[0]; | |
2727 | rp = XFS_BMAP_REC_IADDR(block, ptr, cur); | |
2728 | xfs_bmbt_disk_set_allf(rp, off, bno, len, state); | |
2729 | xfs_bmbt_log_recs(cur, bp, ptr, ptr); | |
2730 | if (ptr > 1) { | |
2731 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2732 | return 0; | |
2733 | } | |
8801bb99 | 2734 | key.br_startoff = cpu_to_be64(off); |
1da177e4 LT |
2735 | if ((error = xfs_bmbt_updkey(cur, &key, 1))) { |
2736 | XFS_BMBT_TRACE_CURSOR(cur, ERROR); | |
2737 | return error; | |
2738 | } | |
2739 | XFS_BMBT_TRACE_CURSOR(cur, EXIT); | |
2740 | return 0; | |
2741 | } | |
2742 | ||
2743 | /* | |
4eea22f0 | 2744 | * Check extent records, which have just been read, for |
1da177e4 LT |
2745 | * any bit in the extent flag field. ASSERT on debug |
2746 | * kernels, as this condition should not occur. | |
2747 | * Return an error condition (1) if any flags found, | |
2748 | * otherwise return 0. | |
2749 | */ | |
2750 | ||
2751 | int | |
2752 | xfs_check_nostate_extents( | |
4eea22f0 MK |
2753 | xfs_ifork_t *ifp, |
2754 | xfs_extnum_t idx, | |
1da177e4 LT |
2755 | xfs_extnum_t num) |
2756 | { | |
4eea22f0 MK |
2757 | xfs_bmbt_rec_t *ep; |
2758 | ||
2759 | for (; num > 0; num--, idx++) { | |
2760 | ep = xfs_iext_get_ext(ifp, idx); | |
1da177e4 LT |
2761 | if ((ep->l0 >> |
2762 | (64 - BMBT_EXNTFLAG_BITLEN)) != 0) { | |
2763 | ASSERT(0); | |
2764 | return 1; | |
2765 | } | |
2766 | } | |
2767 | return 0; | |
2768 | } |