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Commit | Line | Data |
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2bd0ea18 | 1 | /* |
da23017d NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
2bd0ea18 | 4 | * |
da23017d 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 | |
2bd0ea18 NS |
7 | * published by the Free Software Foundation. |
8 | * | |
da23017d 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. | |
2bd0ea18 | 13 | * |
da23017d 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 | |
2bd0ea18 NS |
17 | */ |
18 | ||
1d7e80ee | 19 | #include <xfs/libxfs.h> |
2bd0ea18 | 20 | #include <sys/stat.h> |
9440d84d | 21 | #include "init.h" |
29e62271 | 22 | |
2bd0ea18 NS |
23 | char *progname = "libxfs"; /* default, changed by each tool */ |
24 | ||
f1b058f9 | 25 | struct cache *libxfs_icache; /* global inode cache */ |
9f38f08d | 26 | int libxfs_ihash_size; /* #buckets in icache */ |
f1b058f9 NS |
27 | |
28 | struct cache *libxfs_bcache; /* global buffer cache */ | |
9f38f08d | 29 | int libxfs_bhash_size; /* #buckets in bcache */ |
f1b058f9 NS |
30 | |
31 | static void manage_zones(int); /* setup global zones */ | |
32 | ||
2bd0ea18 NS |
33 | /* |
34 | * dev_map - map open devices to fd. | |
35 | */ | |
36 | #define MAX_DEVS 10 /* arbitary maximum */ | |
37 | int nextfakedev = -1; /* device number to give to next fake device */ | |
38 | static struct dev_to_fd { | |
9440d84d NS |
39 | dev_t dev; |
40 | int fd; | |
2bd0ea18 NS |
41 | } dev_map[MAX_DEVS]={{0}}; |
42 | ||
2bd0ea18 NS |
43 | /* |
44 | * Checks whether a given device has a mounted, writable | |
45 | * filesystem, returns 1 if it does & fatal (just warns | |
46 | * if not fatal, but allows us to proceed). | |
5000d01d | 47 | * |
2bd0ea18 NS |
48 | * Useful to tools which will produce uncertain results |
49 | * if the filesystem is active - repair, check, logprint. | |
50 | */ | |
51 | static int | |
52 | check_isactive(char *name, char *block, int fatal) | |
53 | { | |
9440d84d | 54 | struct stat64 st; |
2bd0ea18 | 55 | |
fc8202ba | 56 | if (stat64(block, &st) < 0) |
9440d84d | 57 | return 0; |
fc8202ba | 58 | if ((st.st_mode & S_IFMT) != S_IFBLK) |
9440d84d | 59 | return 0; |
93d9f139 | 60 | if (platform_check_ismounted(name, block, &st, 0) == 0) |
9440d84d | 61 | return 0; |
93d9f139 | 62 | return platform_check_iswritable(name, block, &st, fatal); |
2bd0ea18 NS |
63 | } |
64 | ||
5000d01d | 65 | /* libxfs_device_to_fd: |
2bd0ea18 NS |
66 | * lookup a device number in the device map |
67 | * return the associated fd | |
68 | */ | |
69 | int | |
70 | libxfs_device_to_fd(dev_t device) | |
71 | { | |
9440d84d | 72 | int d; |
5000d01d | 73 | |
9440d84d | 74 | for (d = 0; d < MAX_DEVS; d++) |
5000d01d | 75 | if (dev_map[d].dev == device) |
2bd0ea18 | 76 | return dev_map[d].fd; |
5000d01d | 77 | |
9440d84d NS |
78 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
79 | progname, __FUNCTION__, (long long)device); | |
2bd0ea18 | 80 | exit(1); |
25d246df | 81 | /* NOTREACHED */ |
2bd0ea18 NS |
82 | } |
83 | ||
84 | /* libxfs_device_open: | |
85 | * open a device and return its device number | |
86 | */ | |
87 | dev_t | |
7eb6693f | 88 | libxfs_device_open(char *path, int creat, int xflags, int setblksize) |
2bd0ea18 | 89 | { |
2bd0ea18 | 90 | dev_t dev; |
7eb6693f | 91 | int fd, d, flags; |
b74a1f6a | 92 | int readonly, dio, excl; |
7eb6693f NS |
93 | struct stat64 statb; |
94 | ||
95 | readonly = (xflags & LIBXFS_ISREADONLY); | |
96 | excl = (xflags & LIBXFS_EXCLUSIVELY) && !creat; | |
b74a1f6a | 97 | dio = (xflags & LIBXFS_DIRECT) && !creat && platform_direct_blockdev(); |
2bd0ea18 | 98 | |
b74a1f6a | 99 | retry: |
7eb6693f NS |
100 | flags = (readonly ? O_RDONLY : O_RDWR) | \ |
101 | (creat ? (O_CREAT|O_TRUNC) : 0) | \ | |
b74a1f6a | 102 | (dio ? O_DIRECT : 0) | \ |
7eb6693f | 103 | (excl ? O_EXCL : 0); |
b74a1f6a | 104 | |
7eb6693f | 105 | if ((fd = open(path, flags, 0666)) < 0) { |
b74a1f6a NS |
106 | if (errno == EINVAL && --dio == 0) |
107 | goto retry; | |
9440d84d | 108 | fprintf(stderr, _("%s: cannot open %s: %s\n"), |
2bd0ea18 NS |
109 | progname, path, strerror(errno)); |
110 | exit(1); | |
111 | } | |
112 | ||
7eb6693f | 113 | if (fstat64(fd, &statb) < 0) { |
9440d84d | 114 | fprintf(stderr, _("%s: cannot stat %s: %s\n"), |
2bd0ea18 NS |
115 | progname, path, strerror(errno)); |
116 | exit(1); | |
117 | } | |
a33a9e62 | 118 | |
76956054 NS |
119 | if (!readonly && setblksize && (statb.st_mode & S_IFMT) == S_IFBLK) |
120 | platform_set_blocksize(fd, path, statb.st_rdev, 512); | |
2bd0ea18 | 121 | |
a33a9e62 NS |
122 | /* |
123 | * Get the device number from the stat buf - unless | |
2bd0ea18 | 124 | * we're not opening a real device, in which case |
a33a9e62 | 125 | * choose a new fake device number. |
2bd0ea18 | 126 | */ |
32181a02 | 127 | dev = (statb.st_rdev) ? (statb.st_rdev) : (nextfakedev--); |
2bd0ea18 | 128 | |
32181a02 | 129 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 130 | if (dev_map[d].dev == dev) { |
9440d84d | 131 | fprintf(stderr, _("%s: device %lld is already open\n"), |
5b64e00a | 132 | progname, (long long)dev); |
2bd0ea18 NS |
133 | exit(1); |
134 | } | |
135 | ||
32181a02 | 136 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 137 | if (!dev_map[d].dev) { |
32181a02 NS |
138 | dev_map[d].dev = dev; |
139 | dev_map[d].fd = fd; | |
5000d01d | 140 | |
2bd0ea18 NS |
141 | return dev; |
142 | } | |
143 | ||
9440d84d NS |
144 | fprintf(stderr, _("%s: %s: too many open devices\n"), |
145 | progname, __FUNCTION__); | |
2bd0ea18 | 146 | exit(1); |
25d246df | 147 | /* NOTREACHED */ |
2bd0ea18 NS |
148 | } |
149 | ||
150 | void | |
151 | libxfs_device_close(dev_t dev) | |
152 | { | |
5000d01d | 153 | int d; |
2bd0ea18 | 154 | |
32181a02 | 155 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 156 | if (dev_map[d].dev == dev) { |
32181a02 | 157 | int fd; |
5000d01d | 158 | |
32181a02 NS |
159 | fd = dev_map[d].fd; |
160 | dev_map[d].dev = dev_map[d].fd = 0; | |
5000d01d | 161 | |
2bd0ea18 | 162 | fsync(fd); |
ac419944 | 163 | platform_flush_device(fd, dev); |
2bd0ea18 | 164 | close(fd); |
5000d01d | 165 | |
2bd0ea18 NS |
166 | return; |
167 | } | |
168 | ||
9440d84d NS |
169 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
170 | progname, __FUNCTION__, (long long)dev); | |
2bd0ea18 NS |
171 | exit(1); |
172 | } | |
173 | ||
74668075 NS |
174 | static int |
175 | check_open(char *path, int flags, char **rawfile, char **blockfile) | |
176 | { | |
c781939c RC |
177 | int readonly = (flags & LIBXFS_ISREADONLY); |
178 | int inactive = (flags & LIBXFS_ISINACTIVE); | |
179 | int dangerously = (flags & LIBXFS_DANGEROUSLY); | |
180 | struct stat64 stbuf; | |
181 | ||
182 | if (stat64(path, &stbuf) < 0) { | |
183 | perror(path); | |
184 | return 0; | |
185 | } | |
b74a1f6a | 186 | if (!(*rawfile = platform_findrawpath(path))) { |
c781939c RC |
187 | fprintf(stderr, _("%s: " |
188 | "can't find a character device matching %s\n"), | |
189 | progname, path); | |
190 | return 0; | |
191 | } | |
b74a1f6a | 192 | if (!(*blockfile = platform_findblockpath(path))) { |
c781939c RC |
193 | fprintf(stderr, _("%s: " |
194 | "can't find a block device matching %s\n"), | |
195 | progname, path); | |
196 | return 0; | |
197 | } | |
198 | if (!readonly && !inactive && platform_check_ismounted(path, *blockfile, NULL, 1)) | |
199 | return 0; | |
200 | ||
201 | if (inactive && check_isactive(path, *blockfile, ((readonly|dangerously)?1:0))) | |
202 | return 0; | |
203 | ||
204 | return 1; | |
205 | } | |
206 | ||
2bd0ea18 NS |
207 | /* |
208 | * libxfs initialization. | |
209 | * Caller gets a 0 on failure (and we print a message), 1 on success. | |
210 | */ | |
211 | int | |
212 | libxfs_init(libxfs_init_t *a) | |
213 | { | |
214 | char *blockfile; | |
215 | char curdir[MAXPATHLEN]; | |
216 | char *dname; | |
217 | char dpath[25]; | |
218 | int fd; | |
219 | char *logname; | |
220 | char logpath[25]; | |
221 | int needcd; | |
222 | char *rawfile; | |
223 | char *rtname; | |
224 | char rtpath[25]; | |
225 | int rval = 0; | |
c781939c | 226 | int flags; |
2bd0ea18 NS |
227 | |
228 | dpath[0] = logpath[0] = rtpath[0] = '\0'; | |
229 | dname = a->dname; | |
230 | logname = a->logname; | |
231 | rtname = a->rtname; | |
2bd0ea18 | 232 | a->dfd = a->logfd = a->rtfd = -1; |
74668075 NS |
233 | a->ddev = a->logdev = a->rtdev = 0; |
234 | a->dbsize = a->lbsize = a->rtbsize = 0; | |
2bd0ea18 NS |
235 | a->dsize = a->logBBsize = a->logBBstart = a->rtsize = 0; |
236 | ||
237 | (void)getcwd(curdir,MAXPATHLEN); | |
238 | needcd = 0; | |
239 | fd = -1; | |
b74a1f6a | 240 | flags = (a->isreadonly | a->isdirect); |
c781939c | 241 | |
2bd0ea18 | 242 | if (a->volname) { |
c781939c | 243 | if(!check_open(a->volname,flags,&rawfile,&blockfile)) |
2bd0ea18 NS |
244 | goto done; |
245 | needcd = 1; | |
246 | fd = open(rawfile, O_RDONLY); | |
eb37fca5 NS |
247 | dname = a->dname = a->volname; |
248 | a->volname = NULL; | |
2bd0ea18 | 249 | } |
2bd0ea18 NS |
250 | if (dname) { |
251 | if (dname[0] != '/' && needcd) | |
252 | chdir(curdir); | |
253 | if (a->disfile) { | |
7eb6693f | 254 | a->ddev= libxfs_device_open(dname, a->dcreat, flags, |
c5907b96 | 255 | a->setblksize); |
2bd0ea18 NS |
256 | a->dfd = libxfs_device_to_fd(a->ddev); |
257 | } else { | |
f02037ce | 258 | if (!check_open(dname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
259 | goto done; |
260 | a->ddev = libxfs_device_open(rawfile, | |
7eb6693f | 261 | a->dcreat, flags, a->setblksize); |
2bd0ea18 | 262 | a->dfd = libxfs_device_to_fd(a->ddev); |
f02037ce NS |
263 | platform_findsizes(rawfile, a->dfd, |
264 | &a->dsize, &a->dbsize); | |
2bd0ea18 NS |
265 | } |
266 | needcd = 1; | |
267 | } else | |
268 | a->dsize = 0; | |
269 | if (logname) { | |
270 | if (logname[0] != '/' && needcd) | |
271 | chdir(curdir); | |
272 | if (a->lisfile) { | |
273 | a->logdev = libxfs_device_open(logname, | |
7eb6693f | 274 | a->lcreat, flags, a->setblksize); |
2bd0ea18 NS |
275 | a->logfd = libxfs_device_to_fd(a->logdev); |
276 | } else { | |
f02037ce | 277 | if (!check_open(logname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
278 | goto done; |
279 | a->logdev = libxfs_device_open(rawfile, | |
7eb6693f | 280 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 281 | a->logfd = libxfs_device_to_fd(a->logdev); |
f02037ce NS |
282 | platform_findsizes(rawfile, a->logfd, |
283 | &a->logBBsize, &a->lbsize); | |
2bd0ea18 NS |
284 | } |
285 | needcd = 1; | |
286 | } else | |
287 | a->logBBsize = 0; | |
288 | if (rtname) { | |
289 | if (rtname[0] != '/' && needcd) | |
290 | chdir(curdir); | |
291 | if (a->risfile) { | |
292 | a->rtdev = libxfs_device_open(rtname, | |
7eb6693f | 293 | a->rcreat, flags, a->setblksize); |
2bd0ea18 NS |
294 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
295 | } else { | |
f02037ce | 296 | if (!check_open(rtname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
297 | goto done; |
298 | a->rtdev = libxfs_device_open(rawfile, | |
7eb6693f | 299 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 300 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
f02037ce NS |
301 | platform_findsizes(rawfile, a->rtfd, |
302 | &a->rtsize, &a->rtbsize); | |
2bd0ea18 NS |
303 | } |
304 | needcd = 1; | |
305 | } else | |
306 | a->rtsize = 0; | |
307 | if (a->dsize < 0) { | |
9440d84d | 308 | fprintf(stderr, _("%s: can't get size for data subvolume\n"), |
2bd0ea18 NS |
309 | progname); |
310 | goto done; | |
311 | } | |
312 | if (a->logBBsize < 0) { | |
9440d84d | 313 | fprintf(stderr, _("%s: can't get size for log subvolume\n"), |
2bd0ea18 NS |
314 | progname); |
315 | goto done; | |
316 | } | |
317 | if (a->rtsize < 0) { | |
9440d84d | 318 | fprintf(stderr, _("%s: can't get size for realtime subvolume\n"), |
2bd0ea18 NS |
319 | progname); |
320 | goto done; | |
321 | } | |
322 | if (needcd) | |
323 | chdir(curdir); | |
9f38f08d MV |
324 | if (!libxfs_ihash_size) |
325 | libxfs_ihash_size = LIBXFS_IHASHSIZE(sbp); | |
326 | libxfs_icache = cache_init(libxfs_ihash_size, &libxfs_icache_operations); | |
327 | if (!libxfs_bhash_size) | |
328 | libxfs_bhash_size = LIBXFS_BHASHSIZE(sbp); | |
329 | libxfs_bcache = cache_init(libxfs_bhash_size, &libxfs_bcache_operations); | |
f1b058f9 | 330 | manage_zones(0); |
2bd0ea18 NS |
331 | rval = 1; |
332 | done: | |
333 | if (dpath[0]) | |
334 | unlink(dpath); | |
335 | if (logpath[0]) | |
336 | unlink(logpath); | |
337 | if (rtpath[0]) | |
338 | unlink(rtpath); | |
339 | if (fd >= 0) | |
340 | close(fd); | |
341 | if (!rval && a->ddev) | |
342 | libxfs_device_close(a->ddev); | |
343 | if (!rval && a->logdev) | |
344 | libxfs_device_close(a->logdev); | |
345 | if (!rval && a->rtdev) | |
346 | libxfs_device_close(a->rtdev); | |
347 | return rval; | |
348 | } | |
349 | ||
350 | ||
351 | /* | |
352 | * Initialize/destroy all of the zone allocators we use. | |
353 | */ | |
354 | static void | |
355 | manage_zones(int release) | |
356 | { | |
f1b058f9 | 357 | extern xfs_zone_t *xfs_buf_zone; |
2bd0ea18 NS |
358 | extern xfs_zone_t *xfs_ili_zone; |
359 | extern xfs_zone_t *xfs_inode_zone; | |
360 | extern xfs_zone_t *xfs_ifork_zone; | |
361 | extern xfs_zone_t *xfs_dabuf_zone; | |
362 | extern xfs_zone_t *xfs_buf_item_zone; | |
363 | extern xfs_zone_t *xfs_da_state_zone; | |
364 | extern xfs_zone_t *xfs_btree_cur_zone; | |
365 | extern xfs_zone_t *xfs_bmap_free_item_zone; | |
366 | extern void xfs_dir_startup(); | |
367 | ||
368 | if (release) { /* free zone allocation */ | |
f1b058f9 | 369 | libxfs_free(xfs_buf_zone); |
2bd0ea18 NS |
370 | libxfs_free(xfs_inode_zone); |
371 | libxfs_free(xfs_ifork_zone); | |
372 | libxfs_free(xfs_dabuf_zone); | |
373 | libxfs_free(xfs_buf_item_zone); | |
374 | libxfs_free(xfs_da_state_zone); | |
375 | libxfs_free(xfs_btree_cur_zone); | |
376 | libxfs_free(xfs_bmap_free_item_zone); | |
377 | return; | |
378 | } | |
379 | /* otherwise initialise zone allocation */ | |
f1b058f9 | 380 | xfs_buf_zone = libxfs_zone_init(sizeof(xfs_buf_t), "xfs_buffer"); |
2bd0ea18 NS |
381 | xfs_inode_zone = libxfs_zone_init(sizeof(xfs_inode_t), "xfs_inode"); |
382 | xfs_ifork_zone = libxfs_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
383 | xfs_dabuf_zone = libxfs_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
384 | xfs_ili_zone = libxfs_zone_init( | |
385 | sizeof(xfs_inode_log_item_t), "xfs_inode_log_item"); | |
386 | xfs_buf_item_zone = libxfs_zone_init( | |
387 | sizeof(xfs_buf_log_item_t), "xfs_buf_log_item"); | |
388 | xfs_da_state_zone = libxfs_zone_init( | |
389 | sizeof(xfs_da_state_t), "xfs_da_state"); | |
390 | xfs_btree_cur_zone = libxfs_zone_init( | |
391 | sizeof(xfs_btree_cur_t), "xfs_btree_cur"); | |
392 | xfs_bmap_free_item_zone = libxfs_zone_init( | |
393 | sizeof(xfs_bmap_free_item_t), "xfs_bmap_free_item"); | |
394 | xfs_dir_startup(); | |
395 | } | |
396 | ||
397 | /* | |
398 | * Get the bitmap and summary inodes into the mount structure | |
399 | * at mount time. | |
400 | */ | |
401 | static int | |
402 | rtmount_inodes(xfs_mount_t *mp) | |
403 | { | |
404 | int error; | |
405 | xfs_sb_t *sbp; | |
406 | ||
407 | sbp = &mp->m_sb; | |
408 | if (sbp->sb_rbmino == NULLFSINO) | |
409 | return 0; | |
f1b058f9 | 410 | error = libxfs_iget(mp, NULL, sbp->sb_rbmino, 0, &mp->m_rbmip, 0); |
2bd0ea18 | 411 | if (error) { |
9440d84d NS |
412 | fprintf(stderr, |
413 | _("%s: cannot read realtime bitmap inode (%d)\n"), | |
2bd0ea18 NS |
414 | progname, error); |
415 | return error; | |
416 | } | |
417 | ASSERT(mp->m_rbmip != NULL); | |
418 | ASSERT(sbp->sb_rsumino != NULLFSINO); | |
f1b058f9 | 419 | error = libxfs_iget(mp, NULL, sbp->sb_rsumino, 0, &mp->m_rsumip, 0); |
2bd0ea18 | 420 | if (error) { |
f1b058f9 | 421 | libxfs_iput(mp->m_rbmip, 0); |
9440d84d NS |
422 | fprintf(stderr, |
423 | _("%s: cannot read realtime summary inode (%d)\n"), | |
2bd0ea18 NS |
424 | progname, error); |
425 | return error; | |
426 | } | |
427 | ASSERT(mp->m_rsumip != NULL); | |
428 | return 0; | |
429 | } | |
430 | ||
b391b7cd NS |
431 | /* |
432 | * Initialize realtime fields in the mount structure. | |
433 | */ | |
434 | static int | |
435 | rtmount_init( | |
39798eb5 NS |
436 | xfs_mount_t *mp, /* file system mount structure */ |
437 | int flags) | |
b391b7cd NS |
438 | { |
439 | xfs_buf_t *bp; /* buffer for last block of subvolume */ | |
440 | xfs_daddr_t d; /* address of last block of subvolume */ | |
441 | xfs_sb_t *sbp; /* filesystem superblock copy in mount */ | |
442 | ||
443 | sbp = &mp->m_sb; | |
444 | if (sbp->sb_rblocks == 0) | |
445 | return 0; | |
39798eb5 | 446 | if (mp->m_rtdev == 0 && !(flags & LIBXFS_MOUNT_DEBUGGER)) { |
9440d84d | 447 | fprintf(stderr, _("%s: filesystem has a realtime subvolume\n"), |
b391b7cd NS |
448 | progname); |
449 | return -1; | |
450 | } | |
451 | mp->m_rsumlevels = sbp->sb_rextslog + 1; | |
452 | mp->m_rsumsize = | |
453 | (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels * | |
454 | sbp->sb_rbmblocks; | |
455 | mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize); | |
456 | mp->m_rbmip = mp->m_rsumip = NULL; | |
39798eb5 NS |
457 | |
458 | /* | |
459 | * Allow debugger to be run without the realtime device present. | |
460 | */ | |
461 | if (flags & LIBXFS_MOUNT_DEBUGGER) | |
462 | return 0; | |
463 | ||
b391b7cd NS |
464 | /* |
465 | * Check that the realtime section is an ok size. | |
466 | */ | |
467 | d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); | |
468 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { | |
9440d84d NS |
469 | fprintf(stderr, _("%s: realtime init - %llu != %llu\n"), |
470 | progname, (unsigned long long) XFS_BB_TO_FSB(mp, d), | |
b391b7cd NS |
471 | (unsigned long long) mp->m_sb.sb_rblocks); |
472 | return -1; | |
473 | } | |
9440d84d NS |
474 | bp = libxfs_readbuf(mp->m_rtdev, |
475 | d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), 0); | |
b391b7cd | 476 | if (bp == NULL) { |
9440d84d NS |
477 | fprintf(stderr, _("%s: realtime size check failed\n"), |
478 | progname); | |
b391b7cd NS |
479 | return -1; |
480 | } | |
481 | libxfs_putbuf(bp); | |
482 | return 0; | |
483 | } | |
484 | ||
2bd0ea18 NS |
485 | /* |
486 | * Mount structure initialization, provides a filled-in xfs_mount_t | |
487 | * such that the numerous XFS_* macros can be used. If dev is zero, | |
488 | * no IO will be performed (no size checks, read root inodes). | |
489 | */ | |
490 | xfs_mount_t * | |
491 | libxfs_mount( | |
492 | xfs_mount_t *mp, | |
493 | xfs_sb_t *sb, | |
494 | dev_t dev, | |
495 | dev_t logdev, | |
496 | dev_t rtdev, | |
4ca431fc | 497 | int flags) |
2bd0ea18 NS |
498 | { |
499 | xfs_daddr_t d; | |
500 | xfs_buf_t *bp; | |
501 | xfs_sb_t *sbp; | |
502 | size_t size; | |
503 | int error; | |
504 | ||
505 | mp->m_dev = dev; | |
506 | mp->m_rtdev = rtdev; | |
507 | mp->m_logdev = logdev; | |
6239071d | 508 | mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); |
2bd0ea18 NS |
509 | mp->m_sb = *sb; |
510 | sbp = &(mp->m_sb); | |
2bd0ea18 NS |
511 | |
512 | libxfs_mount_common(mp, sb); | |
513 | ||
514 | libxfs_alloc_compute_maxlevels(mp); | |
515 | libxfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); | |
516 | libxfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); | |
517 | libxfs_ialloc_compute_maxlevels(mp); | |
518 | ||
519 | if (sbp->sb_imax_pct) { | |
520 | /* Make sure the maximum inode count is a multiple of the | |
521 | * units we allocate inodes in. | |
522 | */ | |
523 | mp->m_maxicount = (sbp->sb_dblocks * sbp->sb_imax_pct) / 100; | |
524 | mp->m_maxicount = ((mp->m_maxicount / mp->m_ialloc_blks) * | |
525 | mp->m_ialloc_blks) << sbp->sb_inopblog; | |
526 | } else | |
527 | mp->m_maxicount = 0; | |
528 | ||
529 | mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE; | |
530 | ||
949c0f10 NS |
531 | /* |
532 | * Set whether we're using stripe alignment. | |
533 | */ | |
534 | if (XFS_SB_VERSION_HASDALIGN(&mp->m_sb)) { | |
535 | mp->m_dalign = sbp->sb_unit; | |
536 | mp->m_swidth = sbp->sb_width; | |
537 | } | |
538 | ||
2bd0ea18 NS |
539 | /* |
540 | * Set whether we're using inode alignment. | |
541 | */ | |
542 | if (XFS_SB_VERSION_HASALIGN(&mp->m_sb) && | |
543 | mp->m_sb.sb_inoalignmt >= | |
544 | XFS_B_TO_FSBT(mp, mp->m_inode_cluster_size)) | |
545 | mp->m_inoalign_mask = mp->m_sb.sb_inoalignmt - 1; | |
546 | else | |
547 | mp->m_inoalign_mask = 0; | |
548 | /* | |
549 | * If we are using stripe alignment, check whether | |
550 | * the stripe unit is a multiple of the inode alignment | |
551 | */ | |
552 | if ( mp->m_dalign | |
553 | && mp->m_inoalign_mask && !(mp->m_dalign & mp->m_inoalign_mask)) | |
554 | mp->m_sinoalign = mp->m_dalign; | |
555 | else | |
556 | mp->m_sinoalign = 0; | |
557 | ||
558 | /* | |
559 | * Check that the data (and log if separate) are an ok size. | |
560 | */ | |
9440d84d | 561 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); |
2bd0ea18 | 562 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { |
9440d84d | 563 | fprintf(stderr, _("%s: size check failed\n"), progname); |
4ca431fc NS |
564 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
565 | return NULL; | |
2bd0ea18 NS |
566 | } |
567 | ||
568 | /* Initialize the appropriate directory manager */ | |
569 | if (XFS_SB_VERSION_HASDIRV2(sbp)) | |
570 | libxfs_dir2_mount(mp); | |
571 | else | |
572 | libxfs_dir_mount(mp); | |
573 | ||
57c9fccb NS |
574 | /* Initialize cached values for the attribute manager */ |
575 | mp->m_attr_magicpct = (mp->m_sb.sb_blocksize * 37) / 100; | |
576 | ||
2bd0ea18 NS |
577 | /* Initialize the precomputed transaction reservations values */ |
578 | libxfs_trans_init(mp); | |
579 | ||
580 | if (dev == 0) /* maxtrres, we have no device so leave now */ | |
581 | return mp; | |
582 | ||
9440d84d | 583 | bp = libxfs_readbuf(mp->m_dev, |
4ca431fc NS |
584 | d - XFS_FSS_TO_BB(mp, 1), XFS_FSS_TO_BB(mp, 1), |
585 | !(flags & LIBXFS_MOUNT_DEBUGGER)); | |
9440d84d NS |
586 | if (!bp) { |
587 | fprintf(stderr, _("%s: data size check failed\n"), progname); | |
4ca431fc NS |
588 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
589 | return NULL; | |
2bd0ea18 NS |
590 | } |
591 | libxfs_putbuf(bp); | |
592 | ||
593 | if (mp->m_logdev && mp->m_logdev != mp->m_dev) { | |
9440d84d | 594 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); |
2bd0ea18 | 595 | if ( (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) || |
9440d84d NS |
596 | (!(bp = libxfs_readbuf(mp->m_logdev, |
597 | d - XFS_FSB_TO_BB(mp, 1), | |
4ca431fc NS |
598 | XFS_FSB_TO_BB(mp, 1), |
599 | !(flags & LIBXFS_MOUNT_DEBUGGER)))) ) { | |
9440d84d | 600 | fprintf(stderr, _("%s: log size checks failed\n"), |
2bd0ea18 | 601 | progname); |
4ca431fc NS |
602 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
603 | return NULL; | |
2bd0ea18 NS |
604 | } |
605 | libxfs_putbuf(bp); | |
606 | } | |
607 | ||
608 | /* Initialize realtime fields in the mount structure */ | |
39798eb5 | 609 | if (rtmount_init(mp, flags)) { |
9440d84d NS |
610 | fprintf(stderr, _("%s: realtime device init failed\n"), |
611 | progname); | |
4ca431fc | 612 | return NULL; |
2bd0ea18 NS |
613 | } |
614 | ||
615 | /* Allocate and initialize the per-ag data */ | |
616 | size = sbp->sb_agcount * sizeof(xfs_perag_t); | |
8ebd0722 | 617 | if (size && (mp->m_perag = calloc(size, 1)) == NULL) { |
9440d84d | 618 | fprintf(stderr, _("%s: failed to alloc %ld bytes: %s\n"), |
5b64e00a | 619 | progname, (long)size, strerror(errno)); |
2bd0ea18 NS |
620 | exit(1); |
621 | } | |
622 | ||
062998e3 | 623 | mp->m_maxagi = libxfs_initialize_perag(mp, sbp->sb_agcount); |
a33a9e62 | 624 | |
2bd0ea18 NS |
625 | /* |
626 | * mkfs calls mount before the root inode is allocated. | |
627 | */ | |
4ca431fc | 628 | if ((flags & LIBXFS_MOUNT_ROOTINOS) && sbp->sb_rootino != NULLFSINO) { |
f1b058f9 | 629 | error = libxfs_iget(mp, NULL, sbp->sb_rootino, 0, |
2bd0ea18 NS |
630 | &mp->m_rootip, 0); |
631 | if (error) { | |
9440d84d | 632 | fprintf(stderr, _("%s: cannot read root inode (%d)\n"), |
2bd0ea18 | 633 | progname, error); |
4ca431fc NS |
634 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
635 | return NULL; | |
2bd0ea18 NS |
636 | } |
637 | ASSERT(mp->m_rootip != NULL); | |
638 | } | |
f1b058f9 NS |
639 | if ((flags & LIBXFS_MOUNT_ROOTINOS) && rtmount_inodes(mp)) { |
640 | libxfs_iput(mp->m_rootip, 0); | |
74668075 | 641 | return NULL; |
f1b058f9 | 642 | } |
2bd0ea18 NS |
643 | return mp; |
644 | } | |
645 | ||
f1b058f9 NS |
646 | void |
647 | libxfs_rtmount_destroy(xfs_mount_t *mp) | |
648 | { | |
649 | if (mp->m_rsumip) | |
650 | libxfs_iput(mp->m_rsumip, 0); | |
651 | if (mp->m_rbmip) | |
652 | libxfs_iput(mp->m_rbmip, 0); | |
653 | mp->m_rsumip = mp->m_rbmip = NULL; | |
654 | } | |
655 | ||
2bd0ea18 | 656 | /* |
9440d84d | 657 | * Release any resource obtained during a mount. |
2bd0ea18 NS |
658 | */ |
659 | void | |
660 | libxfs_umount(xfs_mount_t *mp) | |
661 | { | |
f1b058f9 NS |
662 | libxfs_rtmount_destroy(mp); |
663 | libxfs_icache_purge(); | |
664 | libxfs_bcache_purge(); | |
665 | ||
fceb0d99 ES |
666 | if (mp->m_perag) { |
667 | int agno; | |
668 | for (agno = 0; agno < mp->m_maxagi; agno++) { | |
669 | if (mp->m_perag[agno].pagb_list) | |
670 | free(mp->m_perag[agno].pagb_list); | |
671 | } | |
672 | free(mp->m_perag); | |
673 | } | |
2bd0ea18 | 674 | } |
f1b058f9 NS |
675 | |
676 | /* | |
677 | * Release any global resources used by libxfs. | |
678 | */ | |
679 | void | |
680 | libxfs_destroy(void) | |
681 | { | |
682 | manage_zones(1); | |
683 | cache_destroy(libxfs_icache); | |
684 | cache_destroy(libxfs_bcache); | |
685 | } | |
9f38f08d | 686 | |
b74a1f6a NS |
687 | int |
688 | libxfs_device_alignment(void) | |
689 | { | |
690 | return platform_align_blockdev(); | |
691 | } | |
692 | ||
9f38f08d | 693 | void |
b6281496 | 694 | libxfs_report(FILE *fp) |
9f38f08d | 695 | { |
cb5b3ef4 MV |
696 | time_t t; |
697 | char *c; | |
698 | ||
b6281496 MV |
699 | cache_report(fp, "libxfs_icache", libxfs_icache); |
700 | cache_report(fp, "libxfs_bcache", libxfs_bcache); | |
cb5b3ef4 MV |
701 | |
702 | t = time(NULL); | |
703 | c = asctime(localtime(&t)); | |
704 | fprintf(fp, "%s", c); | |
705 | } | |
3b6ac903 MV |
706 | |
707 | int | |
708 | libxfs_nproc(void) | |
709 | { | |
710 | return platform_nproc(); | |
711 | } |