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Commit | Line | Data |
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959ef981 | 1 | // SPDX-License-Identifier: GPL-2.0 |
2bd0ea18 | 2 | /* |
da23017d NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
2bd0ea18 NS |
5 | */ |
6 | ||
2bd0ea18 | 7 | #include <sys/stat.h> |
9440d84d | 8 | #include "init.h" |
29e62271 | 9 | |
9c799827 | 10 | #include "libxfs_priv.h" |
b626fb59 DC |
11 | #include "xfs_fs.h" |
12 | #include "xfs_shared.h" | |
13 | #include "xfs_format.h" | |
14 | #include "xfs_log_format.h" | |
15 | #include "xfs_trans_resv.h" | |
16 | #include "xfs_mount.h" | |
794a5604 | 17 | #include "xfs_defer.h" |
b626fb59 DC |
18 | #include "xfs_inode_buf.h" |
19 | #include "xfs_inode_fork.h" | |
20 | #include "xfs_inode.h" | |
21 | #include "xfs_trans.h" | |
b3a96b46 | 22 | #include "xfs_rmap_btree.h" |
e7be6330 | 23 | #include "xfs_refcount_btree.h" |
b626fb59 | 24 | |
6b803e5a | 25 | #include "libxfs.h" /* for now */ |
b626fb59 | 26 | |
2bd0ea18 NS |
27 | char *progname = "libxfs"; /* default, changed by each tool */ |
28 | ||
f1b058f9 | 29 | struct cache *libxfs_bcache; /* global buffer cache */ |
9f38f08d | 30 | int libxfs_bhash_size; /* #buckets in bcache */ |
f1b058f9 | 31 | |
d0572de5 BN |
32 | int use_xfs_buf_lock; /* global flag: use xfs_buf_t locks for MT */ |
33 | ||
2bd0ea18 NS |
34 | /* |
35 | * dev_map - map open devices to fd. | |
36 | */ | |
37 | #define MAX_DEVS 10 /* arbitary maximum */ | |
00ff2b10 | 38 | static int nextfakedev = -1; /* device number to give to next fake device */ |
2bd0ea18 | 39 | static struct dev_to_fd { |
9440d84d NS |
40 | dev_t dev; |
41 | int fd; | |
2bd0ea18 NS |
42 | } dev_map[MAX_DEVS]={{0}}; |
43 | ||
2bd0ea18 NS |
44 | /* |
45 | * Checks whether a given device has a mounted, writable | |
46 | * filesystem, returns 1 if it does & fatal (just warns | |
47 | * if not fatal, but allows us to proceed). | |
5000d01d | 48 | * |
2bd0ea18 NS |
49 | * Useful to tools which will produce uncertain results |
50 | * if the filesystem is active - repair, check, logprint. | |
51 | */ | |
52 | static int | |
53 | check_isactive(char *name, char *block, int fatal) | |
54 | { | |
f594a0d1 | 55 | struct stat st; |
2bd0ea18 | 56 | |
f594a0d1 | 57 | if (stat(block, &st) < 0) |
9440d84d | 58 | return 0; |
fc8202ba | 59 | if ((st.st_mode & S_IFMT) != S_IFBLK) |
9440d84d | 60 | return 0; |
93d9f139 | 61 | if (platform_check_ismounted(name, block, &st, 0) == 0) |
9440d84d | 62 | return 0; |
7f510afb ES |
63 | if (platform_check_iswritable(name, block, &st)) |
64 | return fatal ? 1 : 0; | |
65 | return 0; | |
2bd0ea18 NS |
66 | } |
67 | ||
5000d01d | 68 | /* libxfs_device_to_fd: |
2bd0ea18 NS |
69 | * lookup a device number in the device map |
70 | * return the associated fd | |
71 | */ | |
72 | int | |
73 | libxfs_device_to_fd(dev_t device) | |
74 | { | |
9440d84d | 75 | int d; |
5000d01d | 76 | |
9440d84d | 77 | for (d = 0; d < MAX_DEVS; d++) |
5000d01d | 78 | if (dev_map[d].dev == device) |
2bd0ea18 | 79 | return dev_map[d].fd; |
5000d01d | 80 | |
9440d84d NS |
81 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
82 | progname, __FUNCTION__, (long long)device); | |
2bd0ea18 | 83 | exit(1); |
25d246df | 84 | /* NOTREACHED */ |
2bd0ea18 NS |
85 | } |
86 | ||
87 | /* libxfs_device_open: | |
88 | * open a device and return its device number | |
89 | */ | |
90 | dev_t | |
7eb6693f | 91 | libxfs_device_open(char *path, int creat, int xflags, int setblksize) |
2bd0ea18 | 92 | { |
2bd0ea18 | 93 | dev_t dev; |
7eb6693f | 94 | int fd, d, flags; |
b74a1f6a | 95 | int readonly, dio, excl; |
f594a0d1 | 96 | struct stat statb; |
7eb6693f NS |
97 | |
98 | readonly = (xflags & LIBXFS_ISREADONLY); | |
99 | excl = (xflags & LIBXFS_EXCLUSIVELY) && !creat; | |
b74a1f6a | 100 | dio = (xflags & LIBXFS_DIRECT) && !creat && platform_direct_blockdev(); |
2bd0ea18 | 101 | |
b74a1f6a | 102 | retry: |
7eb6693f NS |
103 | flags = (readonly ? O_RDONLY : O_RDWR) | \ |
104 | (creat ? (O_CREAT|O_TRUNC) : 0) | \ | |
b74a1f6a | 105 | (dio ? O_DIRECT : 0) | \ |
7eb6693f | 106 | (excl ? O_EXCL : 0); |
b74a1f6a | 107 | |
7eb6693f | 108 | if ((fd = open(path, flags, 0666)) < 0) { |
b74a1f6a NS |
109 | if (errno == EINVAL && --dio == 0) |
110 | goto retry; | |
9440d84d | 111 | fprintf(stderr, _("%s: cannot open %s: %s\n"), |
2bd0ea18 NS |
112 | progname, path, strerror(errno)); |
113 | exit(1); | |
114 | } | |
115 | ||
f594a0d1 | 116 | if (fstat(fd, &statb) < 0) { |
9440d84d | 117 | fprintf(stderr, _("%s: cannot stat %s: %s\n"), |
2bd0ea18 NS |
118 | progname, path, strerror(errno)); |
119 | exit(1); | |
120 | } | |
a33a9e62 | 121 | |
edd45774 TS |
122 | if (!readonly && setblksize && (statb.st_mode & S_IFMT) == S_IFBLK) { |
123 | if (setblksize == 1) | |
124 | /* use the default blocksize */ | |
125 | (void)platform_set_blocksize(fd, path, statb.st_rdev, XFS_MIN_SECTORSIZE, 0); | |
126 | else { | |
127 | /* given an explicit blocksize to use */ | |
128 | if (platform_set_blocksize(fd, path, statb.st_rdev, setblksize, 1)) | |
129 | exit(1); | |
130 | } | |
131 | } | |
2bd0ea18 | 132 | |
a33a9e62 NS |
133 | /* |
134 | * Get the device number from the stat buf - unless | |
2bd0ea18 | 135 | * we're not opening a real device, in which case |
a33a9e62 | 136 | * choose a new fake device number. |
2bd0ea18 | 137 | */ |
32181a02 | 138 | dev = (statb.st_rdev) ? (statb.st_rdev) : (nextfakedev--); |
2bd0ea18 | 139 | |
32181a02 | 140 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 141 | if (dev_map[d].dev == dev) { |
9440d84d | 142 | fprintf(stderr, _("%s: device %lld is already open\n"), |
5b64e00a | 143 | progname, (long long)dev); |
2bd0ea18 NS |
144 | exit(1); |
145 | } | |
146 | ||
32181a02 | 147 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 148 | if (!dev_map[d].dev) { |
32181a02 NS |
149 | dev_map[d].dev = dev; |
150 | dev_map[d].fd = fd; | |
5000d01d | 151 | |
2bd0ea18 NS |
152 | return dev; |
153 | } | |
154 | ||
9440d84d NS |
155 | fprintf(stderr, _("%s: %s: too many open devices\n"), |
156 | progname, __FUNCTION__); | |
2bd0ea18 | 157 | exit(1); |
25d246df | 158 | /* NOTREACHED */ |
2bd0ea18 NS |
159 | } |
160 | ||
161 | void | |
162 | libxfs_device_close(dev_t dev) | |
163 | { | |
5000d01d | 164 | int d; |
2bd0ea18 | 165 | |
32181a02 | 166 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 167 | if (dev_map[d].dev == dev) { |
32181a02 | 168 | int fd; |
5000d01d | 169 | |
32181a02 NS |
170 | fd = dev_map[d].fd; |
171 | dev_map[d].dev = dev_map[d].fd = 0; | |
5000d01d | 172 | |
2bd0ea18 | 173 | fsync(fd); |
ac419944 | 174 | platform_flush_device(fd, dev); |
2bd0ea18 | 175 | close(fd); |
5000d01d | 176 | |
2bd0ea18 NS |
177 | return; |
178 | } | |
179 | ||
9440d84d NS |
180 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
181 | progname, __FUNCTION__, (long long)dev); | |
2bd0ea18 NS |
182 | exit(1); |
183 | } | |
184 | ||
74668075 NS |
185 | static int |
186 | check_open(char *path, int flags, char **rawfile, char **blockfile) | |
187 | { | |
c781939c RC |
188 | int readonly = (flags & LIBXFS_ISREADONLY); |
189 | int inactive = (flags & LIBXFS_ISINACTIVE); | |
190 | int dangerously = (flags & LIBXFS_DANGEROUSLY); | |
f594a0d1 | 191 | struct stat stbuf; |
c781939c | 192 | |
f594a0d1 | 193 | if (stat(path, &stbuf) < 0) { |
c781939c RC |
194 | perror(path); |
195 | return 0; | |
196 | } | |
b74a1f6a | 197 | if (!(*rawfile = platform_findrawpath(path))) { |
c781939c RC |
198 | fprintf(stderr, _("%s: " |
199 | "can't find a character device matching %s\n"), | |
200 | progname, path); | |
201 | return 0; | |
202 | } | |
b74a1f6a | 203 | if (!(*blockfile = platform_findblockpath(path))) { |
c781939c RC |
204 | fprintf(stderr, _("%s: " |
205 | "can't find a block device matching %s\n"), | |
206 | progname, path); | |
207 | return 0; | |
208 | } | |
209 | if (!readonly && !inactive && platform_check_ismounted(path, *blockfile, NULL, 1)) | |
210 | return 0; | |
e08f5594 | 211 | |
c781939c RC |
212 | if (inactive && check_isactive(path, *blockfile, ((readonly|dangerously)?1:0))) |
213 | return 0; | |
214 | ||
215 | return 1; | |
216 | } | |
217 | ||
7a326ce0 ES |
218 | /* |
219 | * Initialize/destroy all of the zone allocators we use. | |
220 | */ | |
221 | static void | |
222 | init_zones(void) | |
223 | { | |
224 | /* initialise zone allocation */ | |
225 | xfs_buf_zone = kmem_zone_init(sizeof(struct xfs_buf), "xfs_buffer"); | |
226 | xfs_inode_zone = kmem_zone_init(sizeof(struct xfs_inode), "xfs_inode"); | |
227 | xfs_ifork_zone = kmem_zone_init(sizeof(struct xfs_ifork), "xfs_ifork"); | |
228 | xfs_ili_zone = kmem_zone_init( | |
229 | sizeof(struct xfs_inode_log_item),"xfs_inode_log_item"); | |
230 | xfs_buf_item_zone = kmem_zone_init( | |
231 | sizeof(struct xfs_buf_log_item), "xfs_buf_log_item"); | |
232 | xfs_da_state_zone = kmem_zone_init( | |
233 | sizeof(struct xfs_da_state), "xfs_da_state"); | |
234 | xfs_btree_cur_zone = kmem_zone_init( | |
235 | sizeof(struct xfs_btree_cur), "xfs_btree_cur"); | |
236 | xfs_bmap_free_item_zone = kmem_zone_init( | |
237 | sizeof(struct xfs_extent_free_item), | |
238 | "xfs_bmap_free_item"); | |
239 | xfs_trans_zone = kmem_zone_init( | |
240 | sizeof(struct xfs_trans), "xfs_trans"); | |
241 | } | |
242 | ||
243 | static int | |
244 | destroy_zones(void) | |
245 | { | |
246 | int leaked = 0; | |
247 | ||
248 | leaked += kmem_zone_destroy(xfs_buf_zone); | |
249 | leaked += kmem_zone_destroy(xfs_ili_zone); | |
250 | leaked += kmem_zone_destroy(xfs_inode_zone); | |
251 | leaked += kmem_zone_destroy(xfs_ifork_zone); | |
252 | leaked += kmem_zone_destroy(xfs_buf_item_zone); | |
253 | leaked += kmem_zone_destroy(xfs_da_state_zone); | |
254 | leaked += kmem_zone_destroy(xfs_btree_cur_zone); | |
255 | leaked += kmem_zone_destroy(xfs_bmap_free_item_zone); | |
256 | leaked += kmem_zone_destroy(xfs_trans_zone); | |
257 | ||
258 | return leaked; | |
259 | } | |
260 | ||
2bd0ea18 NS |
261 | /* |
262 | * libxfs initialization. | |
263 | * Caller gets a 0 on failure (and we print a message), 1 on success. | |
264 | */ | |
265 | int | |
266 | libxfs_init(libxfs_init_t *a) | |
267 | { | |
268 | char *blockfile; | |
2bd0ea18 NS |
269 | char *dname; |
270 | char dpath[25]; | |
271 | int fd; | |
272 | char *logname; | |
273 | char logpath[25]; | |
2bd0ea18 NS |
274 | char *rawfile; |
275 | char *rtname; | |
276 | char rtpath[25]; | |
277 | int rval = 0; | |
c781939c | 278 | int flags; |
2bd0ea18 NS |
279 | |
280 | dpath[0] = logpath[0] = rtpath[0] = '\0'; | |
281 | dname = a->dname; | |
282 | logname = a->logname; | |
283 | rtname = a->rtname; | |
2bd0ea18 | 284 | a->dfd = a->logfd = a->rtfd = -1; |
74668075 | 285 | a->ddev = a->logdev = a->rtdev = 0; |
06ac92fd DC |
286 | a->dsize = a->lbsize = a->rtbsize = 0; |
287 | a->dbsize = a->logBBsize = a->logBBstart = a->rtsize = 0; | |
2bd0ea18 | 288 | |
2bd0ea18 | 289 | fd = -1; |
b74a1f6a | 290 | flags = (a->isreadonly | a->isdirect); |
c781939c | 291 | |
bacd44a5 AE |
292 | radix_tree_init(); |
293 | ||
2bd0ea18 | 294 | if (a->volname) { |
c781939c | 295 | if(!check_open(a->volname,flags,&rawfile,&blockfile)) |
2bd0ea18 | 296 | goto done; |
2bd0ea18 | 297 | fd = open(rawfile, O_RDONLY); |
eb37fca5 NS |
298 | dname = a->dname = a->volname; |
299 | a->volname = NULL; | |
2bd0ea18 | 300 | } |
2bd0ea18 | 301 | if (dname) { |
2bd0ea18 | 302 | if (a->disfile) { |
7eb6693f | 303 | a->ddev= libxfs_device_open(dname, a->dcreat, flags, |
c5907b96 | 304 | a->setblksize); |
2bd0ea18 | 305 | a->dfd = libxfs_device_to_fd(a->ddev); |
06ac92fd DC |
306 | platform_findsizes(dname, a->dfd, &a->dsize, |
307 | &a->dbsize); | |
2bd0ea18 | 308 | } else { |
f02037ce | 309 | if (!check_open(dname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
310 | goto done; |
311 | a->ddev = libxfs_device_open(rawfile, | |
7eb6693f | 312 | a->dcreat, flags, a->setblksize); |
2bd0ea18 | 313 | a->dfd = libxfs_device_to_fd(a->ddev); |
f02037ce | 314 | platform_findsizes(rawfile, a->dfd, |
06ac92fd | 315 | &a->dsize, &a->dbsize); |
2bd0ea18 | 316 | } |
2bd0ea18 NS |
317 | } else |
318 | a->dsize = 0; | |
319 | if (logname) { | |
2bd0ea18 NS |
320 | if (a->lisfile) { |
321 | a->logdev = libxfs_device_open(logname, | |
7eb6693f | 322 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 323 | a->logfd = libxfs_device_to_fd(a->logdev); |
06ac92fd DC |
324 | platform_findsizes(dname, a->logfd, &a->logBBsize, |
325 | &a->lbsize); | |
2bd0ea18 | 326 | } else { |
f02037ce | 327 | if (!check_open(logname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
328 | goto done; |
329 | a->logdev = libxfs_device_open(rawfile, | |
7eb6693f | 330 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 331 | a->logfd = libxfs_device_to_fd(a->logdev); |
f02037ce | 332 | platform_findsizes(rawfile, a->logfd, |
06ac92fd | 333 | &a->logBBsize, &a->lbsize); |
2bd0ea18 | 334 | } |
2bd0ea18 NS |
335 | } else |
336 | a->logBBsize = 0; | |
337 | if (rtname) { | |
2bd0ea18 NS |
338 | if (a->risfile) { |
339 | a->rtdev = libxfs_device_open(rtname, | |
7eb6693f | 340 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 341 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
06ac92fd DC |
342 | platform_findsizes(dname, a->rtfd, &a->rtsize, |
343 | &a->rtbsize); | |
2bd0ea18 | 344 | } else { |
f02037ce | 345 | if (!check_open(rtname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
346 | goto done; |
347 | a->rtdev = libxfs_device_open(rawfile, | |
7eb6693f | 348 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 349 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
f02037ce | 350 | platform_findsizes(rawfile, a->rtfd, |
06ac92fd | 351 | &a->rtsize, &a->rtbsize); |
2bd0ea18 | 352 | } |
2bd0ea18 NS |
353 | } else |
354 | a->rtsize = 0; | |
355 | if (a->dsize < 0) { | |
9440d84d | 356 | fprintf(stderr, _("%s: can't get size for data subvolume\n"), |
2bd0ea18 NS |
357 | progname); |
358 | goto done; | |
359 | } | |
360 | if (a->logBBsize < 0) { | |
9440d84d | 361 | fprintf(stderr, _("%s: can't get size for log subvolume\n"), |
2bd0ea18 NS |
362 | progname); |
363 | goto done; | |
364 | } | |
365 | if (a->rtsize < 0) { | |
9440d84d | 366 | fprintf(stderr, _("%s: can't get size for realtime subvolume\n"), |
2bd0ea18 NS |
367 | progname); |
368 | goto done; | |
369 | } | |
9f38f08d MV |
370 | if (!libxfs_bhash_size) |
371 | libxfs_bhash_size = LIBXFS_BHASHSIZE(sbp); | |
ba9ecd40 DC |
372 | libxfs_bcache = cache_init(a->bcache_flags, libxfs_bhash_size, |
373 | &libxfs_bcache_operations); | |
d0572de5 | 374 | use_xfs_buf_lock = a->usebuflock; |
7a326ce0 ES |
375 | xfs_dir_startup(); |
376 | init_zones(); | |
2bd0ea18 NS |
377 | rval = 1; |
378 | done: | |
379 | if (dpath[0]) | |
380 | unlink(dpath); | |
381 | if (logpath[0]) | |
382 | unlink(logpath); | |
383 | if (rtpath[0]) | |
384 | unlink(rtpath); | |
385 | if (fd >= 0) | |
386 | close(fd); | |
387 | if (!rval && a->ddev) | |
388 | libxfs_device_close(a->ddev); | |
389 | if (!rval && a->logdev) | |
390 | libxfs_device_close(a->logdev); | |
391 | if (!rval && a->rtdev) | |
392 | libxfs_device_close(a->rtdev); | |
393 | return rval; | |
394 | } | |
395 | ||
396 | ||
b391b7cd NS |
397 | /* |
398 | * Initialize realtime fields in the mount structure. | |
399 | */ | |
400 | static int | |
401 | rtmount_init( | |
39798eb5 NS |
402 | xfs_mount_t *mp, /* file system mount structure */ |
403 | int flags) | |
b391b7cd NS |
404 | { |
405 | xfs_buf_t *bp; /* buffer for last block of subvolume */ | |
406 | xfs_daddr_t d; /* address of last block of subvolume */ | |
407 | xfs_sb_t *sbp; /* filesystem superblock copy in mount */ | |
408 | ||
409 | sbp = &mp->m_sb; | |
410 | if (sbp->sb_rblocks == 0) | |
411 | return 0; | |
75c8b434 | 412 | if (mp->m_rtdev_targp->dev == 0 && !(flags & LIBXFS_MOUNT_DEBUGGER)) { |
9440d84d | 413 | fprintf(stderr, _("%s: filesystem has a realtime subvolume\n"), |
b391b7cd NS |
414 | progname); |
415 | return -1; | |
416 | } | |
417 | mp->m_rsumlevels = sbp->sb_rextslog + 1; | |
418 | mp->m_rsumsize = | |
419 | (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels * | |
420 | sbp->sb_rbmblocks; | |
421 | mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize); | |
422 | mp->m_rbmip = mp->m_rsumip = NULL; | |
39798eb5 NS |
423 | |
424 | /* | |
425 | * Allow debugger to be run without the realtime device present. | |
426 | */ | |
427 | if (flags & LIBXFS_MOUNT_DEBUGGER) | |
428 | return 0; | |
429 | ||
b391b7cd NS |
430 | /* |
431 | * Check that the realtime section is an ok size. | |
432 | */ | |
433 | d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); | |
434 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { | |
9440d84d NS |
435 | fprintf(stderr, _("%s: realtime init - %llu != %llu\n"), |
436 | progname, (unsigned long long) XFS_BB_TO_FSB(mp, d), | |
b391b7cd NS |
437 | (unsigned long long) mp->m_sb.sb_rblocks); |
438 | return -1; | |
439 | } | |
9440d84d | 440 | bp = libxfs_readbuf(mp->m_rtdev, |
75c8b434 | 441 | d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), 0, NULL); |
b391b7cd | 442 | if (bp == NULL) { |
9440d84d NS |
443 | fprintf(stderr, _("%s: realtime size check failed\n"), |
444 | progname); | |
b391b7cd NS |
445 | return -1; |
446 | } | |
447 | libxfs_putbuf(bp); | |
448 | return 0; | |
449 | } | |
450 | ||
56b2de80 DC |
451 | static int |
452 | libxfs_initialize_perag( | |
453 | xfs_mount_t *mp, | |
454 | xfs_agnumber_t agcount, | |
455 | xfs_agnumber_t *maxagi) | |
456 | { | |
457 | xfs_agnumber_t index, max_metadata; | |
458 | xfs_agnumber_t first_initialised = 0; | |
459 | xfs_perag_t *pag; | |
460 | xfs_agino_t agino; | |
461 | xfs_ino_t ino; | |
462 | xfs_sb_t *sbp = &mp->m_sb; | |
463 | int error = -ENOMEM; | |
464 | ||
465 | /* | |
466 | * Walk the current per-ag tree so we don't try to initialise AGs | |
467 | * that already exist (growfs case). Allocate and insert all the | |
468 | * AGs we don't find ready for initialisation. | |
469 | */ | |
470 | for (index = 0; index < agcount; index++) { | |
471 | pag = xfs_perag_get(mp, index); | |
472 | if (pag) { | |
473 | xfs_perag_put(pag); | |
474 | continue; | |
475 | } | |
476 | if (!first_initialised) | |
477 | first_initialised = index; | |
478 | ||
479 | pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL); | |
480 | if (!pag) | |
481 | goto out_unwind; | |
482 | pag->pag_agno = index; | |
483 | pag->pag_mount = mp; | |
484 | ||
485 | if (radix_tree_insert(&mp->m_perag_tree, index, pag)) { | |
486 | error = -EEXIST; | |
487 | goto out_unwind; | |
488 | } | |
489 | } | |
490 | ||
491 | /* | |
492 | * If we mount with the inode64 option, or no inode overflows | |
493 | * the legacy 32-bit address space clear the inode32 option. | |
494 | */ | |
7516da71 | 495 | agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1); |
56b2de80 DC |
496 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
497 | ||
498 | if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) | |
499 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
500 | else | |
501 | mp->m_flags &= ~XFS_MOUNT_32BITINODES; | |
502 | ||
503 | if (mp->m_flags & XFS_MOUNT_32BITINODES) { | |
504 | /* | |
505 | * Calculate how much should be reserved for inodes to meet | |
506 | * the max inode percentage. | |
507 | */ | |
e7fd2b6f | 508 | if (M_IGEO(mp)->maxicount) { |
14f8b681 | 509 | uint64_t icount; |
56b2de80 DC |
510 | |
511 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
512 | do_div(icount, 100); | |
513 | icount += sbp->sb_agblocks - 1; | |
514 | do_div(icount, sbp->sb_agblocks); | |
515 | max_metadata = icount; | |
516 | } else { | |
517 | max_metadata = agcount; | |
518 | } | |
519 | ||
520 | for (index = 0; index < agcount; index++) { | |
521 | ino = XFS_AGINO_TO_INO(mp, index, agino); | |
522 | if (ino > XFS_MAXINUMBER_32) { | |
523 | index++; | |
524 | break; | |
525 | } | |
526 | ||
527 | pag = xfs_perag_get(mp, index); | |
528 | pag->pagi_inodeok = 1; | |
529 | if (index < max_metadata) | |
530 | pag->pagf_metadata = 1; | |
531 | xfs_perag_put(pag); | |
532 | } | |
533 | } else { | |
534 | for (index = 0; index < agcount; index++) { | |
535 | pag = xfs_perag_get(mp, index); | |
536 | pag->pagi_inodeok = 1; | |
537 | xfs_perag_put(pag); | |
538 | } | |
539 | } | |
540 | ||
541 | if (maxagi) | |
542 | *maxagi = index; | |
ef5340cd DW |
543 | |
544 | mp->m_ag_prealloc_blocks = xfs_prealloc_blocks(mp); | |
56b2de80 DC |
545 | return 0; |
546 | ||
547 | out_unwind: | |
548 | kmem_free(pag); | |
549 | for (; index > first_initialised; index--) { | |
550 | pag = radix_tree_delete(&mp->m_perag_tree, index); | |
551 | kmem_free(pag); | |
552 | } | |
553 | return error; | |
554 | } | |
555 | ||
75c8b434 DC |
556 | static struct xfs_buftarg * |
557 | libxfs_buftarg_alloc( | |
558 | struct xfs_mount *mp, | |
559 | dev_t dev) | |
560 | { | |
561 | struct xfs_buftarg *btp; | |
562 | ||
563 | btp = malloc(sizeof(*btp)); | |
564 | if (!btp) { | |
565 | fprintf(stderr, _("%s: buftarg init failed\n"), | |
566 | progname); | |
567 | exit(1); | |
568 | } | |
569 | btp->bt_mount = mp; | |
570 | btp->dev = dev; | |
571 | return btp; | |
572 | } | |
573 | ||
574 | void | |
575 | libxfs_buftarg_init( | |
576 | struct xfs_mount *mp, | |
577 | dev_t dev, | |
578 | dev_t logdev, | |
579 | dev_t rtdev) | |
580 | { | |
581 | if (mp->m_ddev_targp) { | |
582 | /* should already have all buftargs initialised */ | |
583 | if (mp->m_ddev_targp->dev != dev || | |
584 | mp->m_ddev_targp->bt_mount != mp) { | |
585 | fprintf(stderr, | |
586 | _("%s: bad buftarg reinit, ddev\n"), | |
587 | progname); | |
588 | exit(1); | |
589 | } | |
590 | if (!logdev || logdev == dev) { | |
591 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
592 | fprintf(stderr, | |
593 | _("%s: bad buftarg reinit, ldev mismatch\n"), | |
594 | progname); | |
595 | exit(1); | |
596 | } | |
597 | } else if (mp->m_logdev_targp->dev != logdev || | |
598 | mp->m_logdev_targp->bt_mount != mp) { | |
599 | fprintf(stderr, | |
600 | _("%s: bad buftarg reinit, logdev\n"), | |
601 | progname); | |
602 | exit(1); | |
603 | } | |
604 | if (rtdev && (mp->m_rtdev_targp->dev != rtdev || | |
605 | mp->m_rtdev_targp->bt_mount != mp)) { | |
606 | fprintf(stderr, | |
607 | _("%s: bad buftarg reinit, rtdev\n"), | |
608 | progname); | |
609 | exit(1); | |
610 | } | |
611 | return; | |
612 | } | |
613 | ||
614 | mp->m_ddev_targp = libxfs_buftarg_alloc(mp, dev); | |
615 | if (!logdev || logdev == dev) | |
616 | mp->m_logdev_targp = mp->m_ddev_targp; | |
617 | else | |
618 | mp->m_logdev_targp = libxfs_buftarg_alloc(mp, logdev); | |
619 | mp->m_rtdev_targp = libxfs_buftarg_alloc(mp, rtdev); | |
620 | } | |
621 | ||
2bd0ea18 NS |
622 | /* |
623 | * Mount structure initialization, provides a filled-in xfs_mount_t | |
624 | * such that the numerous XFS_* macros can be used. If dev is zero, | |
625 | * no IO will be performed (no size checks, read root inodes). | |
626 | */ | |
627 | xfs_mount_t * | |
628 | libxfs_mount( | |
629 | xfs_mount_t *mp, | |
630 | xfs_sb_t *sb, | |
631 | dev_t dev, | |
632 | dev_t logdev, | |
633 | dev_t rtdev, | |
4ca431fc | 634 | int flags) |
2bd0ea18 NS |
635 | { |
636 | xfs_daddr_t d; | |
637 | xfs_buf_t *bp; | |
638 | xfs_sb_t *sbp; | |
2bd0ea18 NS |
639 | int error; |
640 | ||
75c8b434 DC |
641 | libxfs_buftarg_init(mp, dev, logdev, rtdev); |
642 | ||
f747f7dd | 643 | mp->m_finobt_nores = true; |
6239071d | 644 | mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); |
2bd0ea18 | 645 | mp->m_sb = *sb; |
56b2de80 | 646 | INIT_RADIX_TREE(&mp->m_perag_tree, GFP_KERNEL); |
2bd0ea18 | 647 | sbp = &(mp->m_sb); |
2bd0ea18 | 648 | |
4896e6c8 | 649 | xfs_sb_mount_common(mp, sb); |
2bd0ea18 | 650 | |
949c0f10 NS |
651 | /* |
652 | * Set whether we're using stripe alignment. | |
653 | */ | |
5e656dbb | 654 | if (xfs_sb_version_hasdalign(&mp->m_sb)) { |
949c0f10 NS |
655 | mp->m_dalign = sbp->sb_unit; |
656 | mp->m_swidth = sbp->sb_width; | |
657 | } | |
658 | ||
3a05ab22 DW |
659 | xfs_alloc_compute_maxlevels(mp); |
660 | xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); | |
661 | xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); | |
662 | xfs_ialloc_setup_geometry(mp); | |
663 | xfs_rmapbt_compute_maxlevels(mp); | |
664 | xfs_refcountbt_compute_maxlevels(mp); | |
2bd0ea18 NS |
665 | |
666 | /* | |
667 | * Check that the data (and log if separate) are an ok size. | |
668 | */ | |
9440d84d | 669 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); |
2bd0ea18 | 670 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { |
9440d84d | 671 | fprintf(stderr, _("%s: size check failed\n"), progname); |
4ca431fc NS |
672 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
673 | return NULL; | |
2bd0ea18 NS |
674 | } |
675 | ||
ff105f75 DC |
676 | /* |
677 | * We automatically convert v1 inodes to v2 inodes now, so if | |
678 | * the NLINK bit is not set we can't operate on the filesystem. | |
679 | */ | |
680 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { | |
681 | ||
682 | fprintf(stderr, _( | |
683 | "%s: V1 inodes unsupported. Please try an older xfsprogs.\n"), | |
684 | progname); | |
685 | exit(1); | |
686 | } | |
687 | ||
688 | /* Check for supported directory formats */ | |
689 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT)) { | |
9a048535 DC |
690 | |
691 | fprintf(stderr, _( | |
692 | "%s: V1 directories unsupported. Please try an older xfsprogs.\n"), | |
693 | progname); | |
694 | exit(1); | |
5e656dbb | 695 | } |
2bd0ea18 | 696 | |
ff105f75 DC |
697 | /* check for unsupported other features */ |
698 | if (!xfs_sb_good_version(sbp)) { | |
699 | fprintf(stderr, _( | |
700 | "%s: Unsupported features detected. Please try a newer xfsprogs.\n"), | |
701 | progname); | |
702 | exit(1); | |
703 | } | |
704 | ||
705 | xfs_da_mount(mp); | |
706 | ||
5e656dbb BN |
707 | if (xfs_sb_version_hasattr2(&mp->m_sb)) |
708 | mp->m_flags |= LIBXFS_MOUNT_ATTR2; | |
57c9fccb | 709 | |
2bd0ea18 | 710 | /* Initialize the precomputed transaction reservations values */ |
5e656dbb | 711 | xfs_trans_init(mp); |
2bd0ea18 NS |
712 | |
713 | if (dev == 0) /* maxtrres, we have no device so leave now */ | |
714 | return mp; | |
715 | ||
9440d84d | 716 | bp = libxfs_readbuf(mp->m_dev, |
4ca431fc | 717 | d - XFS_FSS_TO_BB(mp, 1), XFS_FSS_TO_BB(mp, 1), |
75c8b434 | 718 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL); |
9440d84d NS |
719 | if (!bp) { |
720 | fprintf(stderr, _("%s: data size check failed\n"), progname); | |
4ca431fc NS |
721 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
722 | return NULL; | |
32244196 BN |
723 | } else |
724 | libxfs_putbuf(bp); | |
2bd0ea18 | 725 | |
75c8b434 DC |
726 | if (mp->m_logdev_targp->dev && |
727 | mp->m_logdev_targp->dev != mp->m_ddev_targp->dev) { | |
9440d84d | 728 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); |
2bd0ea18 | 729 | if ( (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) || |
75c8b434 | 730 | (!(bp = libxfs_readbuf(mp->m_logdev_targp, |
9440d84d | 731 | d - XFS_FSB_TO_BB(mp, 1), |
4ca431fc | 732 | XFS_FSB_TO_BB(mp, 1), |
75c8b434 | 733 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL))) ) { |
9440d84d | 734 | fprintf(stderr, _("%s: log size checks failed\n"), |
2bd0ea18 | 735 | progname); |
4ca431fc NS |
736 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
737 | return NULL; | |
2bd0ea18 | 738 | } |
32244196 BN |
739 | if (bp) |
740 | libxfs_putbuf(bp); | |
2bd0ea18 NS |
741 | } |
742 | ||
743 | /* Initialize realtime fields in the mount structure */ | |
39798eb5 | 744 | if (rtmount_init(mp, flags)) { |
9440d84d NS |
745 | fprintf(stderr, _("%s: realtime device init failed\n"), |
746 | progname); | |
4ca431fc | 747 | return NULL; |
2bd0ea18 NS |
748 | } |
749 | ||
a547152d ES |
750 | /* |
751 | * libxfs_initialize_perag will allocate a perag structure for each ag. | |
752 | * If agcount is corrupted and insanely high, this will OOM the box. | |
753 | * If the agount seems (arbitrarily) high, try to read what would be | |
754 | * the last AG, and if that fails for a relatively high agcount, just | |
755 | * read the first one and let the user know to check the geometry. | |
756 | */ | |
757 | if (sbp->sb_agcount > 1000000) { | |
758 | bp = libxfs_readbuf(mp->m_dev, | |
759 | XFS_AG_DADDR(mp, sbp->sb_agcount - 1, 0), 1, | |
760 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL); | |
761 | if (bp->b_error) { | |
762 | fprintf(stderr, _("%s: read of AG %u failed\n"), | |
763 | progname, sbp->sb_agcount); | |
764 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) | |
765 | return NULL; | |
766 | fprintf(stderr, _("%s: limiting reads to AG 0\n"), | |
767 | progname); | |
768 | sbp->sb_agcount = 1; | |
769 | } | |
770 | libxfs_putbuf(bp); | |
771 | } | |
772 | ||
56b2de80 DC |
773 | error = libxfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi); |
774 | if (error) { | |
775 | fprintf(stderr, _("%s: perag init failed\n"), | |
776 | progname); | |
2bd0ea18 NS |
777 | exit(1); |
778 | } | |
779 | ||
2bd0ea18 NS |
780 | return mp; |
781 | } | |
782 | ||
f1b058f9 NS |
783 | void |
784 | libxfs_rtmount_destroy(xfs_mount_t *mp) | |
785 | { | |
786 | if (mp->m_rsumip) | |
31845e4c | 787 | libxfs_irele(mp->m_rsumip); |
f1b058f9 | 788 | if (mp->m_rbmip) |
31845e4c | 789 | libxfs_irele(mp->m_rbmip); |
f1b058f9 NS |
790 | mp->m_rsumip = mp->m_rbmip = NULL; |
791 | } | |
792 | ||
2bd0ea18 | 793 | /* |
9440d84d | 794 | * Release any resource obtained during a mount. |
2bd0ea18 NS |
795 | */ |
796 | void | |
797 | libxfs_umount(xfs_mount_t *mp) | |
798 | { | |
56b2de80 DC |
799 | struct xfs_perag *pag; |
800 | int agno; | |
801 | ||
f1b058f9 | 802 | libxfs_rtmount_destroy(mp); |
f1b058f9 NS |
803 | libxfs_bcache_purge(); |
804 | ||
56b2de80 DC |
805 | for (agno = 0; agno < mp->m_maxagi; agno++) { |
806 | pag = radix_tree_delete(&mp->m_perag_tree, agno); | |
807 | kmem_free(pag); | |
fceb0d99 | 808 | } |
4334e2e8 ES |
809 | |
810 | kmem_free(mp->m_attr_geo); | |
811 | kmem_free(mp->m_dir_geo); | |
812 | ||
813 | kmem_free(mp->m_rtdev_targp); | |
814 | if (mp->m_logdev_targp != mp->m_ddev_targp) | |
815 | kmem_free(mp->m_logdev_targp); | |
816 | kmem_free(mp->m_ddev_targp); | |
f8149110 | 817 | |
2bd0ea18 | 818 | } |
f1b058f9 NS |
819 | |
820 | /* | |
821 | * Release any global resources used by libxfs. | |
822 | */ | |
823 | void | |
824 | libxfs_destroy(void) | |
825 | { | |
44488491 ES |
826 | int leaked; |
827 | ||
864028ed ES |
828 | /* Free everything from the buffer cache before freeing buffer zone */ |
829 | libxfs_bcache_purge(); | |
830 | libxfs_bcache_free(); | |
f1b058f9 | 831 | cache_destroy(libxfs_bcache); |
7a326ce0 | 832 | leaked = destroy_zones(); |
44488491 ES |
833 | if (getenv("LIBXFS_LEAK_CHECK") && leaked) |
834 | exit(1); | |
f1b058f9 | 835 | } |
9f38f08d | 836 | |
b74a1f6a NS |
837 | int |
838 | libxfs_device_alignment(void) | |
839 | { | |
840 | return platform_align_blockdev(); | |
841 | } | |
842 | ||
9f38f08d | 843 | void |
b6281496 | 844 | libxfs_report(FILE *fp) |
9f38f08d | 845 | { |
cb5b3ef4 MV |
846 | time_t t; |
847 | char *c; | |
848 | ||
b6281496 | 849 | cache_report(fp, "libxfs_bcache", libxfs_bcache); |
cb5b3ef4 MV |
850 | |
851 | t = time(NULL); | |
852 | c = asctime(localtime(&t)); | |
853 | fprintf(fp, "%s", c); | |
854 | } |