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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 | ||
2bd0ea18 | 19 | #include <sys/stat.h> |
9440d84d | 20 | #include "init.h" |
29e62271 | 21 | |
9c799827 | 22 | #include "libxfs_priv.h" |
b626fb59 DC |
23 | #include "xfs_fs.h" |
24 | #include "xfs_shared.h" | |
25 | #include "xfs_format.h" | |
26 | #include "xfs_log_format.h" | |
27 | #include "xfs_trans_resv.h" | |
28 | #include "xfs_mount.h" | |
794a5604 | 29 | #include "xfs_defer.h" |
b626fb59 DC |
30 | #include "xfs_inode_buf.h" |
31 | #include "xfs_inode_fork.h" | |
32 | #include "xfs_inode.h" | |
33 | #include "xfs_trans.h" | |
b3a96b46 | 34 | #include "xfs_rmap_btree.h" |
e7be6330 | 35 | #include "xfs_refcount_btree.h" |
b626fb59 | 36 | |
6b803e5a | 37 | #include "libxfs.h" /* for now */ |
b626fb59 | 38 | |
2bd0ea18 NS |
39 | char *progname = "libxfs"; /* default, changed by each tool */ |
40 | ||
f1b058f9 | 41 | struct cache *libxfs_bcache; /* global buffer cache */ |
9f38f08d | 42 | int libxfs_bhash_size; /* #buckets in bcache */ |
f1b058f9 | 43 | |
d0572de5 BN |
44 | int use_xfs_buf_lock; /* global flag: use xfs_buf_t locks for MT */ |
45 | ||
f1b058f9 NS |
46 | static void manage_zones(int); /* setup global zones */ |
47 | ||
1d519883 DC |
48 | kmem_zone_t *xfs_inode_zone; |
49 | ||
2bd0ea18 NS |
50 | /* |
51 | * dev_map - map open devices to fd. | |
52 | */ | |
53 | #define MAX_DEVS 10 /* arbitary maximum */ | |
54 | int nextfakedev = -1; /* device number to give to next fake device */ | |
55 | static struct dev_to_fd { | |
9440d84d NS |
56 | dev_t dev; |
57 | int fd; | |
2bd0ea18 NS |
58 | } dev_map[MAX_DEVS]={{0}}; |
59 | ||
2bd0ea18 NS |
60 | /* |
61 | * Checks whether a given device has a mounted, writable | |
62 | * filesystem, returns 1 if it does & fatal (just warns | |
63 | * if not fatal, but allows us to proceed). | |
5000d01d | 64 | * |
2bd0ea18 NS |
65 | * Useful to tools which will produce uncertain results |
66 | * if the filesystem is active - repair, check, logprint. | |
67 | */ | |
68 | static int | |
69 | check_isactive(char *name, char *block, int fatal) | |
70 | { | |
f594a0d1 | 71 | struct stat st; |
2bd0ea18 | 72 | |
f594a0d1 | 73 | if (stat(block, &st) < 0) |
9440d84d | 74 | return 0; |
fc8202ba | 75 | if ((st.st_mode & S_IFMT) != S_IFBLK) |
9440d84d | 76 | return 0; |
93d9f139 | 77 | if (platform_check_ismounted(name, block, &st, 0) == 0) |
9440d84d | 78 | return 0; |
7f510afb ES |
79 | if (platform_check_iswritable(name, block, &st)) |
80 | return fatal ? 1 : 0; | |
81 | return 0; | |
2bd0ea18 NS |
82 | } |
83 | ||
5000d01d | 84 | /* libxfs_device_to_fd: |
2bd0ea18 NS |
85 | * lookup a device number in the device map |
86 | * return the associated fd | |
87 | */ | |
88 | int | |
89 | libxfs_device_to_fd(dev_t device) | |
90 | { | |
9440d84d | 91 | int d; |
5000d01d | 92 | |
9440d84d | 93 | for (d = 0; d < MAX_DEVS; d++) |
5000d01d | 94 | if (dev_map[d].dev == device) |
2bd0ea18 | 95 | return dev_map[d].fd; |
5000d01d | 96 | |
9440d84d NS |
97 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
98 | progname, __FUNCTION__, (long long)device); | |
2bd0ea18 | 99 | exit(1); |
25d246df | 100 | /* NOTREACHED */ |
2bd0ea18 NS |
101 | } |
102 | ||
103 | /* libxfs_device_open: | |
104 | * open a device and return its device number | |
105 | */ | |
106 | dev_t | |
7eb6693f | 107 | libxfs_device_open(char *path, int creat, int xflags, int setblksize) |
2bd0ea18 | 108 | { |
2bd0ea18 | 109 | dev_t dev; |
7eb6693f | 110 | int fd, d, flags; |
b74a1f6a | 111 | int readonly, dio, excl; |
f594a0d1 | 112 | struct stat statb; |
7eb6693f NS |
113 | |
114 | readonly = (xflags & LIBXFS_ISREADONLY); | |
115 | excl = (xflags & LIBXFS_EXCLUSIVELY) && !creat; | |
b74a1f6a | 116 | dio = (xflags & LIBXFS_DIRECT) && !creat && platform_direct_blockdev(); |
2bd0ea18 | 117 | |
b74a1f6a | 118 | retry: |
7eb6693f NS |
119 | flags = (readonly ? O_RDONLY : O_RDWR) | \ |
120 | (creat ? (O_CREAT|O_TRUNC) : 0) | \ | |
b74a1f6a | 121 | (dio ? O_DIRECT : 0) | \ |
7eb6693f | 122 | (excl ? O_EXCL : 0); |
b74a1f6a | 123 | |
7eb6693f | 124 | if ((fd = open(path, flags, 0666)) < 0) { |
b74a1f6a NS |
125 | if (errno == EINVAL && --dio == 0) |
126 | goto retry; | |
9440d84d | 127 | fprintf(stderr, _("%s: cannot open %s: %s\n"), |
2bd0ea18 NS |
128 | progname, path, strerror(errno)); |
129 | exit(1); | |
130 | } | |
131 | ||
f594a0d1 | 132 | if (fstat(fd, &statb) < 0) { |
9440d84d | 133 | fprintf(stderr, _("%s: cannot stat %s: %s\n"), |
2bd0ea18 NS |
134 | progname, path, strerror(errno)); |
135 | exit(1); | |
136 | } | |
a33a9e62 | 137 | |
edd45774 TS |
138 | if (!readonly && setblksize && (statb.st_mode & S_IFMT) == S_IFBLK) { |
139 | if (setblksize == 1) | |
140 | /* use the default blocksize */ | |
141 | (void)platform_set_blocksize(fd, path, statb.st_rdev, XFS_MIN_SECTORSIZE, 0); | |
142 | else { | |
143 | /* given an explicit blocksize to use */ | |
144 | if (platform_set_blocksize(fd, path, statb.st_rdev, setblksize, 1)) | |
145 | exit(1); | |
146 | } | |
147 | } | |
2bd0ea18 | 148 | |
a33a9e62 NS |
149 | /* |
150 | * Get the device number from the stat buf - unless | |
2bd0ea18 | 151 | * we're not opening a real device, in which case |
a33a9e62 | 152 | * choose a new fake device number. |
2bd0ea18 | 153 | */ |
32181a02 | 154 | dev = (statb.st_rdev) ? (statb.st_rdev) : (nextfakedev--); |
2bd0ea18 | 155 | |
32181a02 | 156 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 157 | if (dev_map[d].dev == dev) { |
9440d84d | 158 | fprintf(stderr, _("%s: device %lld is already open\n"), |
5b64e00a | 159 | progname, (long long)dev); |
2bd0ea18 NS |
160 | exit(1); |
161 | } | |
162 | ||
32181a02 | 163 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 164 | if (!dev_map[d].dev) { |
32181a02 NS |
165 | dev_map[d].dev = dev; |
166 | dev_map[d].fd = fd; | |
5000d01d | 167 | |
2bd0ea18 NS |
168 | return dev; |
169 | } | |
170 | ||
9440d84d NS |
171 | fprintf(stderr, _("%s: %s: too many open devices\n"), |
172 | progname, __FUNCTION__); | |
2bd0ea18 | 173 | exit(1); |
25d246df | 174 | /* NOTREACHED */ |
2bd0ea18 NS |
175 | } |
176 | ||
177 | void | |
178 | libxfs_device_close(dev_t dev) | |
179 | { | |
5000d01d | 180 | int d; |
2bd0ea18 | 181 | |
32181a02 | 182 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 183 | if (dev_map[d].dev == dev) { |
32181a02 | 184 | int fd; |
5000d01d | 185 | |
32181a02 NS |
186 | fd = dev_map[d].fd; |
187 | dev_map[d].dev = dev_map[d].fd = 0; | |
5000d01d | 188 | |
2bd0ea18 | 189 | fsync(fd); |
ac419944 | 190 | platform_flush_device(fd, dev); |
2bd0ea18 | 191 | close(fd); |
5000d01d | 192 | |
2bd0ea18 NS |
193 | return; |
194 | } | |
195 | ||
9440d84d NS |
196 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
197 | progname, __FUNCTION__, (long long)dev); | |
2bd0ea18 NS |
198 | exit(1); |
199 | } | |
200 | ||
74668075 NS |
201 | static int |
202 | check_open(char *path, int flags, char **rawfile, char **blockfile) | |
203 | { | |
c781939c RC |
204 | int readonly = (flags & LIBXFS_ISREADONLY); |
205 | int inactive = (flags & LIBXFS_ISINACTIVE); | |
206 | int dangerously = (flags & LIBXFS_DANGEROUSLY); | |
f594a0d1 | 207 | struct stat stbuf; |
c781939c | 208 | |
f594a0d1 | 209 | if (stat(path, &stbuf) < 0) { |
c781939c RC |
210 | perror(path); |
211 | return 0; | |
212 | } | |
b74a1f6a | 213 | if (!(*rawfile = platform_findrawpath(path))) { |
c781939c RC |
214 | fprintf(stderr, _("%s: " |
215 | "can't find a character device matching %s\n"), | |
216 | progname, path); | |
217 | return 0; | |
218 | } | |
b74a1f6a | 219 | if (!(*blockfile = platform_findblockpath(path))) { |
c781939c RC |
220 | fprintf(stderr, _("%s: " |
221 | "can't find a block device matching %s\n"), | |
222 | progname, path); | |
223 | return 0; | |
224 | } | |
225 | if (!readonly && !inactive && platform_check_ismounted(path, *blockfile, NULL, 1)) | |
226 | return 0; | |
e08f5594 | 227 | |
c781939c RC |
228 | if (inactive && check_isactive(path, *blockfile, ((readonly|dangerously)?1:0))) |
229 | return 0; | |
230 | ||
231 | return 1; | |
232 | } | |
233 | ||
2bd0ea18 NS |
234 | /* |
235 | * libxfs initialization. | |
236 | * Caller gets a 0 on failure (and we print a message), 1 on success. | |
237 | */ | |
238 | int | |
239 | libxfs_init(libxfs_init_t *a) | |
240 | { | |
241 | char *blockfile; | |
242 | char curdir[MAXPATHLEN]; | |
243 | char *dname; | |
244 | char dpath[25]; | |
245 | int fd; | |
246 | char *logname; | |
247 | char logpath[25]; | |
248 | int needcd; | |
249 | char *rawfile; | |
250 | char *rtname; | |
251 | char rtpath[25]; | |
252 | int rval = 0; | |
c781939c | 253 | int flags; |
2bd0ea18 NS |
254 | |
255 | dpath[0] = logpath[0] = rtpath[0] = '\0'; | |
256 | dname = a->dname; | |
257 | logname = a->logname; | |
258 | rtname = a->rtname; | |
2bd0ea18 | 259 | a->dfd = a->logfd = a->rtfd = -1; |
74668075 | 260 | a->ddev = a->logdev = a->rtdev = 0; |
06ac92fd DC |
261 | a->dsize = a->lbsize = a->rtbsize = 0; |
262 | a->dbsize = a->logBBsize = a->logBBstart = a->rtsize = 0; | |
2bd0ea18 NS |
263 | |
264 | (void)getcwd(curdir,MAXPATHLEN); | |
265 | needcd = 0; | |
266 | fd = -1; | |
b74a1f6a | 267 | flags = (a->isreadonly | a->isdirect); |
c781939c | 268 | |
dc3bce02 DW |
269 | xfs_extent_free_init_defer_op(); |
270 | xfs_rmap_update_init_defer_op(); | |
cdc9cf25 | 271 | xfs_refcount_update_init_defer_op(); |
f8f8c8a0 | 272 | xfs_bmap_update_init_defer_op(); |
dc3bce02 | 273 | |
bacd44a5 AE |
274 | radix_tree_init(); |
275 | ||
2bd0ea18 | 276 | if (a->volname) { |
c781939c | 277 | if(!check_open(a->volname,flags,&rawfile,&blockfile)) |
2bd0ea18 NS |
278 | goto done; |
279 | needcd = 1; | |
280 | fd = open(rawfile, O_RDONLY); | |
eb37fca5 NS |
281 | dname = a->dname = a->volname; |
282 | a->volname = NULL; | |
2bd0ea18 | 283 | } |
2bd0ea18 NS |
284 | if (dname) { |
285 | if (dname[0] != '/' && needcd) | |
286 | chdir(curdir); | |
287 | if (a->disfile) { | |
7eb6693f | 288 | a->ddev= libxfs_device_open(dname, a->dcreat, flags, |
c5907b96 | 289 | a->setblksize); |
2bd0ea18 | 290 | a->dfd = libxfs_device_to_fd(a->ddev); |
06ac92fd DC |
291 | platform_findsizes(dname, a->dfd, &a->dsize, |
292 | &a->dbsize); | |
2bd0ea18 | 293 | } else { |
f02037ce | 294 | if (!check_open(dname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
295 | goto done; |
296 | a->ddev = libxfs_device_open(rawfile, | |
7eb6693f | 297 | a->dcreat, flags, a->setblksize); |
2bd0ea18 | 298 | a->dfd = libxfs_device_to_fd(a->ddev); |
f02037ce | 299 | platform_findsizes(rawfile, a->dfd, |
06ac92fd | 300 | &a->dsize, &a->dbsize); |
2bd0ea18 NS |
301 | } |
302 | needcd = 1; | |
303 | } else | |
304 | a->dsize = 0; | |
305 | if (logname) { | |
306 | if (logname[0] != '/' && needcd) | |
307 | chdir(curdir); | |
308 | if (a->lisfile) { | |
309 | a->logdev = libxfs_device_open(logname, | |
7eb6693f | 310 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 311 | a->logfd = libxfs_device_to_fd(a->logdev); |
06ac92fd DC |
312 | platform_findsizes(dname, a->logfd, &a->logBBsize, |
313 | &a->lbsize); | |
2bd0ea18 | 314 | } else { |
f02037ce | 315 | if (!check_open(logname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
316 | goto done; |
317 | a->logdev = libxfs_device_open(rawfile, | |
7eb6693f | 318 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 319 | a->logfd = libxfs_device_to_fd(a->logdev); |
f02037ce | 320 | platform_findsizes(rawfile, a->logfd, |
06ac92fd | 321 | &a->logBBsize, &a->lbsize); |
2bd0ea18 NS |
322 | } |
323 | needcd = 1; | |
324 | } else | |
325 | a->logBBsize = 0; | |
326 | if (rtname) { | |
327 | if (rtname[0] != '/' && needcd) | |
328 | chdir(curdir); | |
329 | if (a->risfile) { | |
330 | a->rtdev = libxfs_device_open(rtname, | |
7eb6693f | 331 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 332 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
06ac92fd DC |
333 | platform_findsizes(dname, a->rtfd, &a->rtsize, |
334 | &a->rtbsize); | |
2bd0ea18 | 335 | } else { |
f02037ce | 336 | if (!check_open(rtname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
337 | goto done; |
338 | a->rtdev = libxfs_device_open(rawfile, | |
7eb6693f | 339 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 340 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
f02037ce | 341 | platform_findsizes(rawfile, a->rtfd, |
06ac92fd | 342 | &a->rtsize, &a->rtbsize); |
2bd0ea18 NS |
343 | } |
344 | needcd = 1; | |
345 | } else | |
346 | a->rtsize = 0; | |
347 | if (a->dsize < 0) { | |
9440d84d | 348 | fprintf(stderr, _("%s: can't get size for data subvolume\n"), |
2bd0ea18 NS |
349 | progname); |
350 | goto done; | |
351 | } | |
352 | if (a->logBBsize < 0) { | |
9440d84d | 353 | fprintf(stderr, _("%s: can't get size for log subvolume\n"), |
2bd0ea18 NS |
354 | progname); |
355 | goto done; | |
356 | } | |
357 | if (a->rtsize < 0) { | |
9440d84d | 358 | fprintf(stderr, _("%s: can't get size for realtime subvolume\n"), |
2bd0ea18 NS |
359 | progname); |
360 | goto done; | |
361 | } | |
362 | if (needcd) | |
363 | chdir(curdir); | |
9f38f08d MV |
364 | if (!libxfs_bhash_size) |
365 | libxfs_bhash_size = LIBXFS_BHASHSIZE(sbp); | |
ba9ecd40 DC |
366 | libxfs_bcache = cache_init(a->bcache_flags, libxfs_bhash_size, |
367 | &libxfs_bcache_operations); | |
d0572de5 | 368 | use_xfs_buf_lock = a->usebuflock; |
f1b058f9 | 369 | manage_zones(0); |
2bd0ea18 NS |
370 | rval = 1; |
371 | done: | |
372 | if (dpath[0]) | |
373 | unlink(dpath); | |
374 | if (logpath[0]) | |
375 | unlink(logpath); | |
376 | if (rtpath[0]) | |
377 | unlink(rtpath); | |
378 | if (fd >= 0) | |
379 | close(fd); | |
380 | if (!rval && a->ddev) | |
381 | libxfs_device_close(a->ddev); | |
382 | if (!rval && a->logdev) | |
383 | libxfs_device_close(a->logdev); | |
384 | if (!rval && a->rtdev) | |
385 | libxfs_device_close(a->rtdev); | |
386 | return rval; | |
387 | } | |
388 | ||
389 | ||
390 | /* | |
391 | * Initialize/destroy all of the zone allocators we use. | |
392 | */ | |
393 | static void | |
394 | manage_zones(int release) | |
395 | { | |
5e656dbb BN |
396 | extern kmem_zone_t *xfs_buf_zone; |
397 | extern kmem_zone_t *xfs_ili_zone; | |
5e656dbb | 398 | extern kmem_zone_t *xfs_ifork_zone; |
5e656dbb BN |
399 | extern kmem_zone_t *xfs_buf_item_zone; |
400 | extern kmem_zone_t *xfs_da_state_zone; | |
401 | extern kmem_zone_t *xfs_btree_cur_zone; | |
402 | extern kmem_zone_t *xfs_bmap_free_item_zone; | |
56b2de80 | 403 | extern kmem_zone_t *xfs_log_item_desc_zone; |
2bd0ea18 NS |
404 | extern void xfs_dir_startup(); |
405 | ||
406 | if (release) { /* free zone allocation */ | |
5e656dbb BN |
407 | kmem_free(xfs_buf_zone); |
408 | kmem_free(xfs_inode_zone); | |
409 | kmem_free(xfs_ifork_zone); | |
5e656dbb BN |
410 | kmem_free(xfs_buf_item_zone); |
411 | kmem_free(xfs_da_state_zone); | |
412 | kmem_free(xfs_btree_cur_zone); | |
413 | kmem_free(xfs_bmap_free_item_zone); | |
56b2de80 | 414 | kmem_free(xfs_log_item_desc_zone); |
2bd0ea18 NS |
415 | return; |
416 | } | |
417 | /* otherwise initialise zone allocation */ | |
5e656dbb | 418 | xfs_buf_zone = kmem_zone_init(sizeof(xfs_buf_t), "xfs_buffer"); |
b626fb59 | 419 | xfs_inode_zone = kmem_zone_init(sizeof(struct xfs_inode), "xfs_inode"); |
5e656dbb | 420 | xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); |
5e656dbb | 421 | xfs_ili_zone = kmem_zone_init( |
2bd0ea18 | 422 | sizeof(xfs_inode_log_item_t), "xfs_inode_log_item"); |
5e656dbb | 423 | xfs_buf_item_zone = kmem_zone_init( |
2bd0ea18 | 424 | sizeof(xfs_buf_log_item_t), "xfs_buf_log_item"); |
5e656dbb | 425 | xfs_da_state_zone = kmem_zone_init( |
2bd0ea18 | 426 | sizeof(xfs_da_state_t), "xfs_da_state"); |
5e656dbb | 427 | xfs_btree_cur_zone = kmem_zone_init( |
2bd0ea18 | 428 | sizeof(xfs_btree_cur_t), "xfs_btree_cur"); |
5e656dbb | 429 | xfs_bmap_free_item_zone = kmem_zone_init( |
6f530e9a DW |
430 | sizeof(struct xfs_extent_free_item), |
431 | "xfs_bmap_free_item"); | |
56b2de80 DC |
432 | xfs_log_item_desc_zone = kmem_zone_init( |
433 | sizeof(struct xfs_log_item_desc), "xfs_log_item_desc"); | |
2bd0ea18 NS |
434 | xfs_dir_startup(); |
435 | } | |
436 | ||
b391b7cd NS |
437 | /* |
438 | * Initialize realtime fields in the mount structure. | |
439 | */ | |
440 | static int | |
441 | rtmount_init( | |
39798eb5 NS |
442 | xfs_mount_t *mp, /* file system mount structure */ |
443 | int flags) | |
b391b7cd NS |
444 | { |
445 | xfs_buf_t *bp; /* buffer for last block of subvolume */ | |
446 | xfs_daddr_t d; /* address of last block of subvolume */ | |
447 | xfs_sb_t *sbp; /* filesystem superblock copy in mount */ | |
448 | ||
449 | sbp = &mp->m_sb; | |
450 | if (sbp->sb_rblocks == 0) | |
451 | return 0; | |
75c8b434 | 452 | if (mp->m_rtdev_targp->dev == 0 && !(flags & LIBXFS_MOUNT_DEBUGGER)) { |
9440d84d | 453 | fprintf(stderr, _("%s: filesystem has a realtime subvolume\n"), |
b391b7cd NS |
454 | progname); |
455 | return -1; | |
456 | } | |
457 | mp->m_rsumlevels = sbp->sb_rextslog + 1; | |
458 | mp->m_rsumsize = | |
459 | (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels * | |
460 | sbp->sb_rbmblocks; | |
461 | mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize); | |
462 | mp->m_rbmip = mp->m_rsumip = NULL; | |
39798eb5 NS |
463 | |
464 | /* | |
465 | * Allow debugger to be run without the realtime device present. | |
466 | */ | |
467 | if (flags & LIBXFS_MOUNT_DEBUGGER) | |
468 | return 0; | |
469 | ||
b391b7cd NS |
470 | /* |
471 | * Check that the realtime section is an ok size. | |
472 | */ | |
473 | d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); | |
474 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { | |
9440d84d NS |
475 | fprintf(stderr, _("%s: realtime init - %llu != %llu\n"), |
476 | progname, (unsigned long long) XFS_BB_TO_FSB(mp, d), | |
b391b7cd NS |
477 | (unsigned long long) mp->m_sb.sb_rblocks); |
478 | return -1; | |
479 | } | |
9440d84d | 480 | bp = libxfs_readbuf(mp->m_rtdev, |
75c8b434 | 481 | d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), 0, NULL); |
b391b7cd | 482 | if (bp == NULL) { |
9440d84d NS |
483 | fprintf(stderr, _("%s: realtime size check failed\n"), |
484 | progname); | |
b391b7cd NS |
485 | return -1; |
486 | } | |
487 | libxfs_putbuf(bp); | |
488 | return 0; | |
489 | } | |
490 | ||
56b2de80 DC |
491 | static int |
492 | libxfs_initialize_perag( | |
493 | xfs_mount_t *mp, | |
494 | xfs_agnumber_t agcount, | |
495 | xfs_agnumber_t *maxagi) | |
496 | { | |
497 | xfs_agnumber_t index, max_metadata; | |
498 | xfs_agnumber_t first_initialised = 0; | |
499 | xfs_perag_t *pag; | |
500 | xfs_agino_t agino; | |
501 | xfs_ino_t ino; | |
502 | xfs_sb_t *sbp = &mp->m_sb; | |
503 | int error = -ENOMEM; | |
504 | ||
505 | /* | |
506 | * Walk the current per-ag tree so we don't try to initialise AGs | |
507 | * that already exist (growfs case). Allocate and insert all the | |
508 | * AGs we don't find ready for initialisation. | |
509 | */ | |
510 | for (index = 0; index < agcount; index++) { | |
511 | pag = xfs_perag_get(mp, index); | |
512 | if (pag) { | |
513 | xfs_perag_put(pag); | |
514 | continue; | |
515 | } | |
516 | if (!first_initialised) | |
517 | first_initialised = index; | |
518 | ||
519 | pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL); | |
520 | if (!pag) | |
521 | goto out_unwind; | |
522 | pag->pag_agno = index; | |
523 | pag->pag_mount = mp; | |
524 | ||
525 | if (radix_tree_insert(&mp->m_perag_tree, index, pag)) { | |
526 | error = -EEXIST; | |
527 | goto out_unwind; | |
528 | } | |
529 | } | |
530 | ||
531 | /* | |
532 | * If we mount with the inode64 option, or no inode overflows | |
533 | * the legacy 32-bit address space clear the inode32 option. | |
534 | */ | |
535 | agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0); | |
536 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); | |
537 | ||
538 | if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) | |
539 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
540 | else | |
541 | mp->m_flags &= ~XFS_MOUNT_32BITINODES; | |
542 | ||
543 | if (mp->m_flags & XFS_MOUNT_32BITINODES) { | |
544 | /* | |
545 | * Calculate how much should be reserved for inodes to meet | |
546 | * the max inode percentage. | |
547 | */ | |
548 | if (mp->m_maxicount) { | |
549 | __uint64_t icount; | |
550 | ||
551 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
552 | do_div(icount, 100); | |
553 | icount += sbp->sb_agblocks - 1; | |
554 | do_div(icount, sbp->sb_agblocks); | |
555 | max_metadata = icount; | |
556 | } else { | |
557 | max_metadata = agcount; | |
558 | } | |
559 | ||
560 | for (index = 0; index < agcount; index++) { | |
561 | ino = XFS_AGINO_TO_INO(mp, index, agino); | |
562 | if (ino > XFS_MAXINUMBER_32) { | |
563 | index++; | |
564 | break; | |
565 | } | |
566 | ||
567 | pag = xfs_perag_get(mp, index); | |
568 | pag->pagi_inodeok = 1; | |
569 | if (index < max_metadata) | |
570 | pag->pagf_metadata = 1; | |
571 | xfs_perag_put(pag); | |
572 | } | |
573 | } else { | |
574 | for (index = 0; index < agcount; index++) { | |
575 | pag = xfs_perag_get(mp, index); | |
576 | pag->pagi_inodeok = 1; | |
577 | xfs_perag_put(pag); | |
578 | } | |
579 | } | |
580 | ||
581 | if (maxagi) | |
582 | *maxagi = index; | |
ef5340cd DW |
583 | |
584 | mp->m_ag_prealloc_blocks = xfs_prealloc_blocks(mp); | |
56b2de80 DC |
585 | return 0; |
586 | ||
587 | out_unwind: | |
588 | kmem_free(pag); | |
589 | for (; index > first_initialised; index--) { | |
590 | pag = radix_tree_delete(&mp->m_perag_tree, index); | |
591 | kmem_free(pag); | |
592 | } | |
593 | return error; | |
594 | } | |
595 | ||
75c8b434 DC |
596 | static struct xfs_buftarg * |
597 | libxfs_buftarg_alloc( | |
598 | struct xfs_mount *mp, | |
599 | dev_t dev) | |
600 | { | |
601 | struct xfs_buftarg *btp; | |
602 | ||
603 | btp = malloc(sizeof(*btp)); | |
604 | if (!btp) { | |
605 | fprintf(stderr, _("%s: buftarg init failed\n"), | |
606 | progname); | |
607 | exit(1); | |
608 | } | |
609 | btp->bt_mount = mp; | |
610 | btp->dev = dev; | |
611 | return btp; | |
612 | } | |
613 | ||
614 | void | |
615 | libxfs_buftarg_init( | |
616 | struct xfs_mount *mp, | |
617 | dev_t dev, | |
618 | dev_t logdev, | |
619 | dev_t rtdev) | |
620 | { | |
621 | if (mp->m_ddev_targp) { | |
622 | /* should already have all buftargs initialised */ | |
623 | if (mp->m_ddev_targp->dev != dev || | |
624 | mp->m_ddev_targp->bt_mount != mp) { | |
625 | fprintf(stderr, | |
626 | _("%s: bad buftarg reinit, ddev\n"), | |
627 | progname); | |
628 | exit(1); | |
629 | } | |
630 | if (!logdev || logdev == dev) { | |
631 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
632 | fprintf(stderr, | |
633 | _("%s: bad buftarg reinit, ldev mismatch\n"), | |
634 | progname); | |
635 | exit(1); | |
636 | } | |
637 | } else if (mp->m_logdev_targp->dev != logdev || | |
638 | mp->m_logdev_targp->bt_mount != mp) { | |
639 | fprintf(stderr, | |
640 | _("%s: bad buftarg reinit, logdev\n"), | |
641 | progname); | |
642 | exit(1); | |
643 | } | |
644 | if (rtdev && (mp->m_rtdev_targp->dev != rtdev || | |
645 | mp->m_rtdev_targp->bt_mount != mp)) { | |
646 | fprintf(stderr, | |
647 | _("%s: bad buftarg reinit, rtdev\n"), | |
648 | progname); | |
649 | exit(1); | |
650 | } | |
651 | return; | |
652 | } | |
653 | ||
654 | mp->m_ddev_targp = libxfs_buftarg_alloc(mp, dev); | |
655 | if (!logdev || logdev == dev) | |
656 | mp->m_logdev_targp = mp->m_ddev_targp; | |
657 | else | |
658 | mp->m_logdev_targp = libxfs_buftarg_alloc(mp, logdev); | |
659 | mp->m_rtdev_targp = libxfs_buftarg_alloc(mp, rtdev); | |
660 | } | |
661 | ||
2bd0ea18 NS |
662 | /* |
663 | * Mount structure initialization, provides a filled-in xfs_mount_t | |
664 | * such that the numerous XFS_* macros can be used. If dev is zero, | |
665 | * no IO will be performed (no size checks, read root inodes). | |
666 | */ | |
667 | xfs_mount_t * | |
668 | libxfs_mount( | |
669 | xfs_mount_t *mp, | |
670 | xfs_sb_t *sb, | |
671 | dev_t dev, | |
672 | dev_t logdev, | |
673 | dev_t rtdev, | |
4ca431fc | 674 | int flags) |
2bd0ea18 NS |
675 | { |
676 | xfs_daddr_t d; | |
677 | xfs_buf_t *bp; | |
678 | xfs_sb_t *sbp; | |
2bd0ea18 NS |
679 | int error; |
680 | ||
75c8b434 DC |
681 | libxfs_buftarg_init(mp, dev, logdev, rtdev); |
682 | ||
6239071d | 683 | mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); |
2bd0ea18 | 684 | mp->m_sb = *sb; |
56b2de80 | 685 | INIT_RADIX_TREE(&mp->m_perag_tree, GFP_KERNEL); |
2bd0ea18 | 686 | sbp = &(mp->m_sb); |
2bd0ea18 | 687 | |
4896e6c8 | 688 | xfs_sb_mount_common(mp, sb); |
2bd0ea18 | 689 | |
5e656dbb BN |
690 | xfs_alloc_compute_maxlevels(mp); |
691 | xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); | |
692 | xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); | |
693 | xfs_ialloc_compute_maxlevels(mp); | |
b3a96b46 | 694 | xfs_rmapbt_compute_maxlevels(mp); |
e7be6330 | 695 | xfs_refcountbt_compute_maxlevels(mp); |
2bd0ea18 NS |
696 | |
697 | if (sbp->sb_imax_pct) { | |
698 | /* Make sure the maximum inode count is a multiple of the | |
699 | * units we allocate inodes in. | |
700 | */ | |
701 | mp->m_maxicount = (sbp->sb_dblocks * sbp->sb_imax_pct) / 100; | |
702 | mp->m_maxicount = ((mp->m_maxicount / mp->m_ialloc_blks) * | |
703 | mp->m_ialloc_blks) << sbp->sb_inopblog; | |
704 | } else | |
705 | mp->m_maxicount = 0; | |
706 | ||
707 | mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE; | |
708 | ||
949c0f10 NS |
709 | /* |
710 | * Set whether we're using stripe alignment. | |
711 | */ | |
5e656dbb | 712 | if (xfs_sb_version_hasdalign(&mp->m_sb)) { |
949c0f10 NS |
713 | mp->m_dalign = sbp->sb_unit; |
714 | mp->m_swidth = sbp->sb_width; | |
715 | } | |
716 | ||
2bd0ea18 NS |
717 | /* |
718 | * Set whether we're using inode alignment. | |
719 | */ | |
5e656dbb | 720 | if (xfs_sb_version_hasalign(&mp->m_sb) && |
2bd0ea18 NS |
721 | mp->m_sb.sb_inoalignmt >= |
722 | XFS_B_TO_FSBT(mp, mp->m_inode_cluster_size)) | |
723 | mp->m_inoalign_mask = mp->m_sb.sb_inoalignmt - 1; | |
724 | else | |
725 | mp->m_inoalign_mask = 0; | |
726 | /* | |
727 | * If we are using stripe alignment, check whether | |
728 | * the stripe unit is a multiple of the inode alignment | |
729 | */ | |
b3563c19 | 730 | if (mp->m_dalign && mp->m_inoalign_mask && |
5e656dbb | 731 | !(mp->m_dalign & mp->m_inoalign_mask)) |
2bd0ea18 NS |
732 | mp->m_sinoalign = mp->m_dalign; |
733 | else | |
734 | mp->m_sinoalign = 0; | |
735 | ||
736 | /* | |
737 | * Check that the data (and log if separate) are an ok size. | |
738 | */ | |
9440d84d | 739 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); |
2bd0ea18 | 740 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { |
9440d84d | 741 | fprintf(stderr, _("%s: size check failed\n"), progname); |
4ca431fc NS |
742 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
743 | return NULL; | |
2bd0ea18 NS |
744 | } |
745 | ||
ff105f75 DC |
746 | /* |
747 | * We automatically convert v1 inodes to v2 inodes now, so if | |
748 | * the NLINK bit is not set we can't operate on the filesystem. | |
749 | */ | |
750 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { | |
751 | ||
752 | fprintf(stderr, _( | |
753 | "%s: V1 inodes unsupported. Please try an older xfsprogs.\n"), | |
754 | progname); | |
755 | exit(1); | |
756 | } | |
757 | ||
758 | /* Check for supported directory formats */ | |
759 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT)) { | |
9a048535 DC |
760 | |
761 | fprintf(stderr, _( | |
762 | "%s: V1 directories unsupported. Please try an older xfsprogs.\n"), | |
763 | progname); | |
764 | exit(1); | |
5e656dbb | 765 | } |
2bd0ea18 | 766 | |
ff105f75 DC |
767 | /* check for unsupported other features */ |
768 | if (!xfs_sb_good_version(sbp)) { | |
769 | fprintf(stderr, _( | |
770 | "%s: Unsupported features detected. Please try a newer xfsprogs.\n"), | |
771 | progname); | |
772 | exit(1); | |
773 | } | |
774 | ||
775 | xfs_da_mount(mp); | |
776 | ||
5e656dbb BN |
777 | if (xfs_sb_version_hasattr2(&mp->m_sb)) |
778 | mp->m_flags |= LIBXFS_MOUNT_ATTR2; | |
57c9fccb | 779 | |
2bd0ea18 | 780 | /* Initialize the precomputed transaction reservations values */ |
5e656dbb | 781 | xfs_trans_init(mp); |
2bd0ea18 NS |
782 | |
783 | if (dev == 0) /* maxtrres, we have no device so leave now */ | |
784 | return mp; | |
785 | ||
9440d84d | 786 | bp = libxfs_readbuf(mp->m_dev, |
4ca431fc | 787 | d - XFS_FSS_TO_BB(mp, 1), XFS_FSS_TO_BB(mp, 1), |
75c8b434 | 788 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL); |
9440d84d NS |
789 | if (!bp) { |
790 | fprintf(stderr, _("%s: data size check failed\n"), progname); | |
4ca431fc NS |
791 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
792 | return NULL; | |
32244196 BN |
793 | } else |
794 | libxfs_putbuf(bp); | |
2bd0ea18 | 795 | |
75c8b434 DC |
796 | if (mp->m_logdev_targp->dev && |
797 | mp->m_logdev_targp->dev != mp->m_ddev_targp->dev) { | |
9440d84d | 798 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); |
2bd0ea18 | 799 | if ( (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) || |
75c8b434 | 800 | (!(bp = libxfs_readbuf(mp->m_logdev_targp, |
9440d84d | 801 | d - XFS_FSB_TO_BB(mp, 1), |
4ca431fc | 802 | XFS_FSB_TO_BB(mp, 1), |
75c8b434 | 803 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL))) ) { |
9440d84d | 804 | fprintf(stderr, _("%s: log size checks failed\n"), |
2bd0ea18 | 805 | progname); |
4ca431fc NS |
806 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
807 | return NULL; | |
2bd0ea18 | 808 | } |
32244196 BN |
809 | if (bp) |
810 | libxfs_putbuf(bp); | |
2bd0ea18 NS |
811 | } |
812 | ||
813 | /* Initialize realtime fields in the mount structure */ | |
39798eb5 | 814 | if (rtmount_init(mp, flags)) { |
9440d84d NS |
815 | fprintf(stderr, _("%s: realtime device init failed\n"), |
816 | progname); | |
4ca431fc | 817 | return NULL; |
2bd0ea18 NS |
818 | } |
819 | ||
a547152d ES |
820 | /* |
821 | * libxfs_initialize_perag will allocate a perag structure for each ag. | |
822 | * If agcount is corrupted and insanely high, this will OOM the box. | |
823 | * If the agount seems (arbitrarily) high, try to read what would be | |
824 | * the last AG, and if that fails for a relatively high agcount, just | |
825 | * read the first one and let the user know to check the geometry. | |
826 | */ | |
827 | if (sbp->sb_agcount > 1000000) { | |
828 | bp = libxfs_readbuf(mp->m_dev, | |
829 | XFS_AG_DADDR(mp, sbp->sb_agcount - 1, 0), 1, | |
830 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL); | |
831 | if (bp->b_error) { | |
832 | fprintf(stderr, _("%s: read of AG %u failed\n"), | |
833 | progname, sbp->sb_agcount); | |
834 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) | |
835 | return NULL; | |
836 | fprintf(stderr, _("%s: limiting reads to AG 0\n"), | |
837 | progname); | |
838 | sbp->sb_agcount = 1; | |
839 | } | |
840 | libxfs_putbuf(bp); | |
841 | } | |
842 | ||
56b2de80 DC |
843 | error = libxfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi); |
844 | if (error) { | |
845 | fprintf(stderr, _("%s: perag init failed\n"), | |
846 | progname); | |
2bd0ea18 NS |
847 | exit(1); |
848 | } | |
849 | ||
2bd0ea18 NS |
850 | return mp; |
851 | } | |
852 | ||
f1b058f9 NS |
853 | void |
854 | libxfs_rtmount_destroy(xfs_mount_t *mp) | |
855 | { | |
856 | if (mp->m_rsumip) | |
dd2c21d2 | 857 | IRELE(mp->m_rsumip); |
f1b058f9 | 858 | if (mp->m_rbmip) |
dd2c21d2 | 859 | IRELE(mp->m_rbmip); |
f1b058f9 NS |
860 | mp->m_rsumip = mp->m_rbmip = NULL; |
861 | } | |
862 | ||
2bd0ea18 | 863 | /* |
9440d84d | 864 | * Release any resource obtained during a mount. |
2bd0ea18 NS |
865 | */ |
866 | void | |
867 | libxfs_umount(xfs_mount_t *mp) | |
868 | { | |
56b2de80 DC |
869 | struct xfs_perag *pag; |
870 | int agno; | |
871 | ||
f1b058f9 | 872 | libxfs_rtmount_destroy(mp); |
f1b058f9 NS |
873 | libxfs_bcache_purge(); |
874 | ||
56b2de80 DC |
875 | for (agno = 0; agno < mp->m_maxagi; agno++) { |
876 | pag = radix_tree_delete(&mp->m_perag_tree, agno); | |
877 | kmem_free(pag); | |
fceb0d99 | 878 | } |
4334e2e8 ES |
879 | |
880 | kmem_free(mp->m_attr_geo); | |
881 | kmem_free(mp->m_dir_geo); | |
882 | ||
883 | kmem_free(mp->m_rtdev_targp); | |
884 | if (mp->m_logdev_targp != mp->m_ddev_targp) | |
885 | kmem_free(mp->m_logdev_targp); | |
886 | kmem_free(mp->m_ddev_targp); | |
f8149110 | 887 | |
2bd0ea18 | 888 | } |
f1b058f9 NS |
889 | |
890 | /* | |
891 | * Release any global resources used by libxfs. | |
892 | */ | |
893 | void | |
894 | libxfs_destroy(void) | |
895 | { | |
896 | manage_zones(1); | |
f1b058f9 NS |
897 | cache_destroy(libxfs_bcache); |
898 | } | |
9f38f08d | 899 | |
b74a1f6a NS |
900 | int |
901 | libxfs_device_alignment(void) | |
902 | { | |
903 | return platform_align_blockdev(); | |
904 | } | |
905 | ||
9f38f08d | 906 | void |
b6281496 | 907 | libxfs_report(FILE *fp) |
9f38f08d | 908 | { |
cb5b3ef4 MV |
909 | time_t t; |
910 | char *c; | |
911 | ||
b6281496 | 912 | cache_report(fp, "libxfs_bcache", libxfs_bcache); |
cb5b3ef4 MV |
913 | |
914 | t = time(NULL); | |
915 | c = asctime(localtime(&t)); | |
916 | fprintf(fp, "%s", c); | |
917 | } | |
3b6ac903 MV |
918 | |
919 | int | |
920 | libxfs_nproc(void) | |
921 | { | |
922 | return platform_nproc(); | |
923 | } | |
2556c98b BN |
924 | |
925 | unsigned long | |
926 | libxfs_physmem(void) | |
927 | { | |
928 | return platform_physmem(); | |
e08f5594 | 929 | } |