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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" |
b658de93 | 24 | #include "libfrog/platform.h" |
b626fb59 | 25 | |
6b803e5a | 26 | #include "libxfs.h" /* for now */ |
b626fb59 | 27 | |
2bd0ea18 NS |
28 | char *progname = "libxfs"; /* default, changed by each tool */ |
29 | ||
f1b058f9 | 30 | struct cache *libxfs_bcache; /* global buffer cache */ |
9f38f08d | 31 | int libxfs_bhash_size; /* #buckets in bcache */ |
f1b058f9 | 32 | |
d0572de5 BN |
33 | int use_xfs_buf_lock; /* global flag: use xfs_buf_t locks for MT */ |
34 | ||
2bd0ea18 NS |
35 | /* |
36 | * dev_map - map open devices to fd. | |
37 | */ | |
38 | #define MAX_DEVS 10 /* arbitary maximum */ | |
00ff2b10 | 39 | static int nextfakedev = -1; /* device number to give to next fake device */ |
2bd0ea18 | 40 | static struct dev_to_fd { |
9440d84d NS |
41 | dev_t dev; |
42 | int fd; | |
2bd0ea18 NS |
43 | } dev_map[MAX_DEVS]={{0}}; |
44 | ||
2bd0ea18 NS |
45 | /* |
46 | * Checks whether a given device has a mounted, writable | |
47 | * filesystem, returns 1 if it does & fatal (just warns | |
48 | * if not fatal, but allows us to proceed). | |
5000d01d | 49 | * |
2bd0ea18 NS |
50 | * Useful to tools which will produce uncertain results |
51 | * if the filesystem is active - repair, check, logprint. | |
52 | */ | |
53 | static int | |
54 | check_isactive(char *name, char *block, int fatal) | |
55 | { | |
f594a0d1 | 56 | struct stat st; |
2bd0ea18 | 57 | |
f594a0d1 | 58 | if (stat(block, &st) < 0) |
9440d84d | 59 | return 0; |
fc8202ba | 60 | if ((st.st_mode & S_IFMT) != S_IFBLK) |
9440d84d | 61 | return 0; |
93d9f139 | 62 | if (platform_check_ismounted(name, block, &st, 0) == 0) |
9440d84d | 63 | return 0; |
7f510afb ES |
64 | if (platform_check_iswritable(name, block, &st)) |
65 | return fatal ? 1 : 0; | |
66 | return 0; | |
2bd0ea18 NS |
67 | } |
68 | ||
5000d01d | 69 | /* libxfs_device_to_fd: |
2bd0ea18 NS |
70 | * lookup a device number in the device map |
71 | * return the associated fd | |
72 | */ | |
73 | int | |
74 | libxfs_device_to_fd(dev_t device) | |
75 | { | |
9440d84d | 76 | int d; |
5000d01d | 77 | |
9440d84d | 78 | for (d = 0; d < MAX_DEVS; d++) |
5000d01d | 79 | if (dev_map[d].dev == device) |
2bd0ea18 | 80 | return dev_map[d].fd; |
5000d01d | 81 | |
9440d84d NS |
82 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
83 | progname, __FUNCTION__, (long long)device); | |
2bd0ea18 | 84 | exit(1); |
25d246df | 85 | /* NOTREACHED */ |
2bd0ea18 NS |
86 | } |
87 | ||
88 | /* libxfs_device_open: | |
89 | * open a device and return its device number | |
90 | */ | |
91 | dev_t | |
7eb6693f | 92 | libxfs_device_open(char *path, int creat, int xflags, int setblksize) |
2bd0ea18 | 93 | { |
2bd0ea18 | 94 | dev_t dev; |
7eb6693f | 95 | int fd, d, flags; |
b74a1f6a | 96 | int readonly, dio, excl; |
f594a0d1 | 97 | struct stat statb; |
7eb6693f NS |
98 | |
99 | readonly = (xflags & LIBXFS_ISREADONLY); | |
100 | excl = (xflags & LIBXFS_EXCLUSIVELY) && !creat; | |
b74a1f6a | 101 | dio = (xflags & LIBXFS_DIRECT) && !creat && platform_direct_blockdev(); |
2bd0ea18 | 102 | |
b74a1f6a | 103 | retry: |
7eb6693f NS |
104 | flags = (readonly ? O_RDONLY : O_RDWR) | \ |
105 | (creat ? (O_CREAT|O_TRUNC) : 0) | \ | |
b74a1f6a | 106 | (dio ? O_DIRECT : 0) | \ |
7eb6693f | 107 | (excl ? O_EXCL : 0); |
b74a1f6a | 108 | |
7eb6693f | 109 | if ((fd = open(path, flags, 0666)) < 0) { |
b74a1f6a NS |
110 | if (errno == EINVAL && --dio == 0) |
111 | goto retry; | |
9440d84d | 112 | fprintf(stderr, _("%s: cannot open %s: %s\n"), |
2bd0ea18 NS |
113 | progname, path, strerror(errno)); |
114 | exit(1); | |
115 | } | |
116 | ||
f594a0d1 | 117 | if (fstat(fd, &statb) < 0) { |
9440d84d | 118 | fprintf(stderr, _("%s: cannot stat %s: %s\n"), |
2bd0ea18 NS |
119 | progname, path, strerror(errno)); |
120 | exit(1); | |
121 | } | |
a33a9e62 | 122 | |
edd45774 TS |
123 | if (!readonly && setblksize && (statb.st_mode & S_IFMT) == S_IFBLK) { |
124 | if (setblksize == 1) | |
125 | /* use the default blocksize */ | |
126 | (void)platform_set_blocksize(fd, path, statb.st_rdev, XFS_MIN_SECTORSIZE, 0); | |
127 | else { | |
128 | /* given an explicit blocksize to use */ | |
129 | if (platform_set_blocksize(fd, path, statb.st_rdev, setblksize, 1)) | |
130 | exit(1); | |
131 | } | |
132 | } | |
2bd0ea18 | 133 | |
a33a9e62 NS |
134 | /* |
135 | * Get the device number from the stat buf - unless | |
2bd0ea18 | 136 | * we're not opening a real device, in which case |
a33a9e62 | 137 | * choose a new fake device number. |
2bd0ea18 | 138 | */ |
32181a02 | 139 | dev = (statb.st_rdev) ? (statb.st_rdev) : (nextfakedev--); |
2bd0ea18 | 140 | |
32181a02 | 141 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 142 | if (dev_map[d].dev == dev) { |
9440d84d | 143 | fprintf(stderr, _("%s: device %lld is already open\n"), |
5b64e00a | 144 | progname, (long long)dev); |
2bd0ea18 NS |
145 | exit(1); |
146 | } | |
147 | ||
32181a02 | 148 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 149 | if (!dev_map[d].dev) { |
32181a02 NS |
150 | dev_map[d].dev = dev; |
151 | dev_map[d].fd = fd; | |
5000d01d | 152 | |
2bd0ea18 NS |
153 | return dev; |
154 | } | |
155 | ||
9440d84d NS |
156 | fprintf(stderr, _("%s: %s: too many open devices\n"), |
157 | progname, __FUNCTION__); | |
2bd0ea18 | 158 | exit(1); |
25d246df | 159 | /* NOTREACHED */ |
2bd0ea18 NS |
160 | } |
161 | ||
162 | void | |
163 | libxfs_device_close(dev_t dev) | |
164 | { | |
5000d01d | 165 | int d; |
2bd0ea18 | 166 | |
32181a02 | 167 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 168 | if (dev_map[d].dev == dev) { |
32181a02 | 169 | int fd; |
5000d01d | 170 | |
32181a02 NS |
171 | fd = dev_map[d].fd; |
172 | dev_map[d].dev = dev_map[d].fd = 0; | |
5000d01d | 173 | |
2bd0ea18 | 174 | fsync(fd); |
ac419944 | 175 | platform_flush_device(fd, dev); |
2bd0ea18 | 176 | close(fd); |
5000d01d | 177 | |
2bd0ea18 NS |
178 | return; |
179 | } | |
180 | ||
9440d84d NS |
181 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
182 | progname, __FUNCTION__, (long long)dev); | |
2bd0ea18 NS |
183 | exit(1); |
184 | } | |
185 | ||
74668075 NS |
186 | static int |
187 | check_open(char *path, int flags, char **rawfile, char **blockfile) | |
188 | { | |
c781939c RC |
189 | int readonly = (flags & LIBXFS_ISREADONLY); |
190 | int inactive = (flags & LIBXFS_ISINACTIVE); | |
191 | int dangerously = (flags & LIBXFS_DANGEROUSLY); | |
f594a0d1 | 192 | struct stat stbuf; |
c781939c | 193 | |
f594a0d1 | 194 | if (stat(path, &stbuf) < 0) { |
c781939c RC |
195 | perror(path); |
196 | return 0; | |
197 | } | |
b74a1f6a | 198 | if (!(*rawfile = platform_findrawpath(path))) { |
c781939c RC |
199 | fprintf(stderr, _("%s: " |
200 | "can't find a character device matching %s\n"), | |
201 | progname, path); | |
202 | return 0; | |
203 | } | |
b74a1f6a | 204 | if (!(*blockfile = platform_findblockpath(path))) { |
c781939c RC |
205 | fprintf(stderr, _("%s: " |
206 | "can't find a block device matching %s\n"), | |
207 | progname, path); | |
208 | return 0; | |
209 | } | |
210 | if (!readonly && !inactive && platform_check_ismounted(path, *blockfile, NULL, 1)) | |
211 | return 0; | |
e08f5594 | 212 | |
c781939c RC |
213 | if (inactive && check_isactive(path, *blockfile, ((readonly|dangerously)?1:0))) |
214 | return 0; | |
215 | ||
216 | return 1; | |
217 | } | |
218 | ||
7a326ce0 ES |
219 | /* |
220 | * Initialize/destroy all of the zone allocators we use. | |
221 | */ | |
222 | static void | |
223 | init_zones(void) | |
224 | { | |
225 | /* initialise zone allocation */ | |
226 | xfs_buf_zone = kmem_zone_init(sizeof(struct xfs_buf), "xfs_buffer"); | |
227 | xfs_inode_zone = kmem_zone_init(sizeof(struct xfs_inode), "xfs_inode"); | |
228 | xfs_ifork_zone = kmem_zone_init(sizeof(struct xfs_ifork), "xfs_ifork"); | |
229 | xfs_ili_zone = kmem_zone_init( | |
230 | sizeof(struct xfs_inode_log_item),"xfs_inode_log_item"); | |
231 | xfs_buf_item_zone = kmem_zone_init( | |
232 | sizeof(struct xfs_buf_log_item), "xfs_buf_log_item"); | |
233 | xfs_da_state_zone = kmem_zone_init( | |
234 | sizeof(struct xfs_da_state), "xfs_da_state"); | |
235 | xfs_btree_cur_zone = kmem_zone_init( | |
236 | sizeof(struct xfs_btree_cur), "xfs_btree_cur"); | |
237 | xfs_bmap_free_item_zone = kmem_zone_init( | |
238 | sizeof(struct xfs_extent_free_item), | |
239 | "xfs_bmap_free_item"); | |
240 | xfs_trans_zone = kmem_zone_init( | |
241 | sizeof(struct xfs_trans), "xfs_trans"); | |
242 | } | |
243 | ||
244 | static int | |
245 | destroy_zones(void) | |
246 | { | |
247 | int leaked = 0; | |
248 | ||
249 | leaked += kmem_zone_destroy(xfs_buf_zone); | |
250 | leaked += kmem_zone_destroy(xfs_ili_zone); | |
251 | leaked += kmem_zone_destroy(xfs_inode_zone); | |
252 | leaked += kmem_zone_destroy(xfs_ifork_zone); | |
253 | leaked += kmem_zone_destroy(xfs_buf_item_zone); | |
254 | leaked += kmem_zone_destroy(xfs_da_state_zone); | |
255 | leaked += kmem_zone_destroy(xfs_btree_cur_zone); | |
256 | leaked += kmem_zone_destroy(xfs_bmap_free_item_zone); | |
257 | leaked += kmem_zone_destroy(xfs_trans_zone); | |
258 | ||
259 | return leaked; | |
260 | } | |
261 | ||
2bd0ea18 NS |
262 | /* |
263 | * libxfs initialization. | |
264 | * Caller gets a 0 on failure (and we print a message), 1 on success. | |
265 | */ | |
266 | int | |
267 | libxfs_init(libxfs_init_t *a) | |
268 | { | |
269 | char *blockfile; | |
2bd0ea18 NS |
270 | char *dname; |
271 | char dpath[25]; | |
272 | int fd; | |
273 | char *logname; | |
274 | char logpath[25]; | |
2bd0ea18 NS |
275 | char *rawfile; |
276 | char *rtname; | |
277 | char rtpath[25]; | |
278 | int rval = 0; | |
c781939c | 279 | int flags; |
2bd0ea18 NS |
280 | |
281 | dpath[0] = logpath[0] = rtpath[0] = '\0'; | |
282 | dname = a->dname; | |
283 | logname = a->logname; | |
284 | rtname = a->rtname; | |
2bd0ea18 | 285 | a->dfd = a->logfd = a->rtfd = -1; |
74668075 | 286 | a->ddev = a->logdev = a->rtdev = 0; |
06ac92fd DC |
287 | a->dsize = a->lbsize = a->rtbsize = 0; |
288 | a->dbsize = a->logBBsize = a->logBBstart = a->rtsize = 0; | |
2bd0ea18 | 289 | |
2bd0ea18 | 290 | fd = -1; |
b74a1f6a | 291 | flags = (a->isreadonly | a->isdirect); |
c781939c | 292 | |
bacd44a5 AE |
293 | radix_tree_init(); |
294 | ||
2bd0ea18 | 295 | if (a->volname) { |
c781939c | 296 | if(!check_open(a->volname,flags,&rawfile,&blockfile)) |
2bd0ea18 | 297 | goto done; |
2bd0ea18 | 298 | fd = open(rawfile, O_RDONLY); |
eb37fca5 NS |
299 | dname = a->dname = a->volname; |
300 | a->volname = NULL; | |
2bd0ea18 | 301 | } |
2bd0ea18 | 302 | if (dname) { |
2bd0ea18 | 303 | if (a->disfile) { |
7eb6693f | 304 | a->ddev= libxfs_device_open(dname, a->dcreat, flags, |
c5907b96 | 305 | a->setblksize); |
2bd0ea18 | 306 | a->dfd = libxfs_device_to_fd(a->ddev); |
06ac92fd DC |
307 | platform_findsizes(dname, a->dfd, &a->dsize, |
308 | &a->dbsize); | |
2bd0ea18 | 309 | } else { |
f02037ce | 310 | if (!check_open(dname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
311 | goto done; |
312 | a->ddev = libxfs_device_open(rawfile, | |
7eb6693f | 313 | a->dcreat, flags, a->setblksize); |
2bd0ea18 | 314 | a->dfd = libxfs_device_to_fd(a->ddev); |
f02037ce | 315 | platform_findsizes(rawfile, a->dfd, |
06ac92fd | 316 | &a->dsize, &a->dbsize); |
2bd0ea18 | 317 | } |
2bd0ea18 NS |
318 | } else |
319 | a->dsize = 0; | |
320 | if (logname) { | |
2bd0ea18 NS |
321 | if (a->lisfile) { |
322 | a->logdev = libxfs_device_open(logname, | |
7eb6693f | 323 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 324 | a->logfd = libxfs_device_to_fd(a->logdev); |
06ac92fd DC |
325 | platform_findsizes(dname, a->logfd, &a->logBBsize, |
326 | &a->lbsize); | |
2bd0ea18 | 327 | } else { |
f02037ce | 328 | if (!check_open(logname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
329 | goto done; |
330 | a->logdev = libxfs_device_open(rawfile, | |
7eb6693f | 331 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 332 | a->logfd = libxfs_device_to_fd(a->logdev); |
f02037ce | 333 | platform_findsizes(rawfile, a->logfd, |
06ac92fd | 334 | &a->logBBsize, &a->lbsize); |
2bd0ea18 | 335 | } |
2bd0ea18 NS |
336 | } else |
337 | a->logBBsize = 0; | |
338 | if (rtname) { | |
2bd0ea18 NS |
339 | if (a->risfile) { |
340 | a->rtdev = libxfs_device_open(rtname, | |
7eb6693f | 341 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 342 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
06ac92fd DC |
343 | platform_findsizes(dname, a->rtfd, &a->rtsize, |
344 | &a->rtbsize); | |
2bd0ea18 | 345 | } else { |
f02037ce | 346 | if (!check_open(rtname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
347 | goto done; |
348 | a->rtdev = libxfs_device_open(rawfile, | |
7eb6693f | 349 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 350 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
f02037ce | 351 | platform_findsizes(rawfile, a->rtfd, |
06ac92fd | 352 | &a->rtsize, &a->rtbsize); |
2bd0ea18 | 353 | } |
2bd0ea18 NS |
354 | } else |
355 | a->rtsize = 0; | |
356 | if (a->dsize < 0) { | |
9440d84d | 357 | fprintf(stderr, _("%s: can't get size for data subvolume\n"), |
2bd0ea18 NS |
358 | progname); |
359 | goto done; | |
360 | } | |
361 | if (a->logBBsize < 0) { | |
9440d84d | 362 | fprintf(stderr, _("%s: can't get size for log subvolume\n"), |
2bd0ea18 NS |
363 | progname); |
364 | goto done; | |
365 | } | |
366 | if (a->rtsize < 0) { | |
9440d84d | 367 | fprintf(stderr, _("%s: can't get size for realtime subvolume\n"), |
2bd0ea18 NS |
368 | progname); |
369 | goto done; | |
370 | } | |
9f38f08d MV |
371 | if (!libxfs_bhash_size) |
372 | libxfs_bhash_size = LIBXFS_BHASHSIZE(sbp); | |
ba9ecd40 DC |
373 | libxfs_bcache = cache_init(a->bcache_flags, libxfs_bhash_size, |
374 | &libxfs_bcache_operations); | |
d0572de5 | 375 | use_xfs_buf_lock = a->usebuflock; |
7a326ce0 ES |
376 | xfs_dir_startup(); |
377 | init_zones(); | |
2bd0ea18 NS |
378 | rval = 1; |
379 | done: | |
380 | if (dpath[0]) | |
381 | unlink(dpath); | |
382 | if (logpath[0]) | |
383 | unlink(logpath); | |
384 | if (rtpath[0]) | |
385 | unlink(rtpath); | |
386 | if (fd >= 0) | |
387 | close(fd); | |
388 | if (!rval && a->ddev) | |
389 | libxfs_device_close(a->ddev); | |
390 | if (!rval && a->logdev) | |
391 | libxfs_device_close(a->logdev); | |
392 | if (!rval && a->rtdev) | |
393 | libxfs_device_close(a->rtdev); | |
394 | return rval; | |
395 | } | |
396 | ||
397 | ||
b391b7cd NS |
398 | /* |
399 | * Initialize realtime fields in the mount structure. | |
400 | */ | |
401 | static int | |
402 | rtmount_init( | |
39798eb5 NS |
403 | xfs_mount_t *mp, /* file system mount structure */ |
404 | int flags) | |
b391b7cd NS |
405 | { |
406 | xfs_buf_t *bp; /* buffer for last block of subvolume */ | |
407 | xfs_daddr_t d; /* address of last block of subvolume */ | |
408 | xfs_sb_t *sbp; /* filesystem superblock copy in mount */ | |
409 | ||
410 | sbp = &mp->m_sb; | |
411 | if (sbp->sb_rblocks == 0) | |
412 | return 0; | |
75c8b434 | 413 | if (mp->m_rtdev_targp->dev == 0 && !(flags & LIBXFS_MOUNT_DEBUGGER)) { |
9440d84d | 414 | fprintf(stderr, _("%s: filesystem has a realtime subvolume\n"), |
b391b7cd NS |
415 | progname); |
416 | return -1; | |
417 | } | |
418 | mp->m_rsumlevels = sbp->sb_rextslog + 1; | |
419 | mp->m_rsumsize = | |
420 | (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels * | |
421 | sbp->sb_rbmblocks; | |
422 | mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize); | |
423 | mp->m_rbmip = mp->m_rsumip = NULL; | |
39798eb5 NS |
424 | |
425 | /* | |
426 | * Allow debugger to be run without the realtime device present. | |
427 | */ | |
428 | if (flags & LIBXFS_MOUNT_DEBUGGER) | |
429 | return 0; | |
430 | ||
b391b7cd NS |
431 | /* |
432 | * Check that the realtime section is an ok size. | |
433 | */ | |
434 | d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); | |
435 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { | |
9440d84d NS |
436 | fprintf(stderr, _("%s: realtime init - %llu != %llu\n"), |
437 | progname, (unsigned long long) XFS_BB_TO_FSB(mp, d), | |
b391b7cd NS |
438 | (unsigned long long) mp->m_sb.sb_rblocks); |
439 | return -1; | |
440 | } | |
9440d84d | 441 | bp = libxfs_readbuf(mp->m_rtdev, |
75c8b434 | 442 | d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), 0, NULL); |
b391b7cd | 443 | if (bp == NULL) { |
9440d84d NS |
444 | fprintf(stderr, _("%s: realtime size check failed\n"), |
445 | progname); | |
b391b7cd NS |
446 | return -1; |
447 | } | |
448 | libxfs_putbuf(bp); | |
449 | return 0; | |
450 | } | |
451 | ||
56b2de80 DC |
452 | static int |
453 | libxfs_initialize_perag( | |
454 | xfs_mount_t *mp, | |
455 | xfs_agnumber_t agcount, | |
456 | xfs_agnumber_t *maxagi) | |
457 | { | |
458 | xfs_agnumber_t index, max_metadata; | |
459 | xfs_agnumber_t first_initialised = 0; | |
460 | xfs_perag_t *pag; | |
461 | xfs_agino_t agino; | |
462 | xfs_ino_t ino; | |
463 | xfs_sb_t *sbp = &mp->m_sb; | |
464 | int error = -ENOMEM; | |
465 | ||
466 | /* | |
467 | * Walk the current per-ag tree so we don't try to initialise AGs | |
468 | * that already exist (growfs case). Allocate and insert all the | |
469 | * AGs we don't find ready for initialisation. | |
470 | */ | |
471 | for (index = 0; index < agcount; index++) { | |
472 | pag = xfs_perag_get(mp, index); | |
473 | if (pag) { | |
474 | xfs_perag_put(pag); | |
475 | continue; | |
476 | } | |
477 | if (!first_initialised) | |
478 | first_initialised = index; | |
479 | ||
480 | pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL); | |
481 | if (!pag) | |
482 | goto out_unwind; | |
483 | pag->pag_agno = index; | |
484 | pag->pag_mount = mp; | |
485 | ||
486 | if (radix_tree_insert(&mp->m_perag_tree, index, pag)) { | |
487 | error = -EEXIST; | |
488 | goto out_unwind; | |
489 | } | |
490 | } | |
491 | ||
492 | /* | |
493 | * If we mount with the inode64 option, or no inode overflows | |
494 | * the legacy 32-bit address space clear the inode32 option. | |
495 | */ | |
7516da71 | 496 | agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1); |
56b2de80 DC |
497 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
498 | ||
499 | if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) | |
500 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
501 | else | |
502 | mp->m_flags &= ~XFS_MOUNT_32BITINODES; | |
503 | ||
504 | if (mp->m_flags & XFS_MOUNT_32BITINODES) { | |
505 | /* | |
506 | * Calculate how much should be reserved for inodes to meet | |
507 | * the max inode percentage. | |
508 | */ | |
e7fd2b6f | 509 | if (M_IGEO(mp)->maxicount) { |
14f8b681 | 510 | uint64_t icount; |
56b2de80 DC |
511 | |
512 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
513 | do_div(icount, 100); | |
514 | icount += sbp->sb_agblocks - 1; | |
515 | do_div(icount, sbp->sb_agblocks); | |
516 | max_metadata = icount; | |
517 | } else { | |
518 | max_metadata = agcount; | |
519 | } | |
520 | ||
521 | for (index = 0; index < agcount; index++) { | |
522 | ino = XFS_AGINO_TO_INO(mp, index, agino); | |
523 | if (ino > XFS_MAXINUMBER_32) { | |
524 | index++; | |
525 | break; | |
526 | } | |
527 | ||
528 | pag = xfs_perag_get(mp, index); | |
529 | pag->pagi_inodeok = 1; | |
530 | if (index < max_metadata) | |
531 | pag->pagf_metadata = 1; | |
532 | xfs_perag_put(pag); | |
533 | } | |
534 | } else { | |
535 | for (index = 0; index < agcount; index++) { | |
536 | pag = xfs_perag_get(mp, index); | |
537 | pag->pagi_inodeok = 1; | |
538 | xfs_perag_put(pag); | |
539 | } | |
540 | } | |
541 | ||
542 | if (maxagi) | |
543 | *maxagi = index; | |
ef5340cd DW |
544 | |
545 | mp->m_ag_prealloc_blocks = xfs_prealloc_blocks(mp); | |
56b2de80 DC |
546 | return 0; |
547 | ||
548 | out_unwind: | |
549 | kmem_free(pag); | |
550 | for (; index > first_initialised; index--) { | |
551 | pag = radix_tree_delete(&mp->m_perag_tree, index); | |
552 | kmem_free(pag); | |
553 | } | |
554 | return error; | |
555 | } | |
556 | ||
75c8b434 DC |
557 | static struct xfs_buftarg * |
558 | libxfs_buftarg_alloc( | |
559 | struct xfs_mount *mp, | |
560 | dev_t dev) | |
561 | { | |
562 | struct xfs_buftarg *btp; | |
563 | ||
564 | btp = malloc(sizeof(*btp)); | |
565 | if (!btp) { | |
566 | fprintf(stderr, _("%s: buftarg init failed\n"), | |
567 | progname); | |
568 | exit(1); | |
569 | } | |
570 | btp->bt_mount = mp; | |
571 | btp->dev = dev; | |
572 | return btp; | |
573 | } | |
574 | ||
575 | void | |
576 | libxfs_buftarg_init( | |
577 | struct xfs_mount *mp, | |
578 | dev_t dev, | |
579 | dev_t logdev, | |
580 | dev_t rtdev) | |
581 | { | |
582 | if (mp->m_ddev_targp) { | |
583 | /* should already have all buftargs initialised */ | |
584 | if (mp->m_ddev_targp->dev != dev || | |
585 | mp->m_ddev_targp->bt_mount != mp) { | |
586 | fprintf(stderr, | |
587 | _("%s: bad buftarg reinit, ddev\n"), | |
588 | progname); | |
589 | exit(1); | |
590 | } | |
591 | if (!logdev || logdev == dev) { | |
592 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
593 | fprintf(stderr, | |
594 | _("%s: bad buftarg reinit, ldev mismatch\n"), | |
595 | progname); | |
596 | exit(1); | |
597 | } | |
598 | } else if (mp->m_logdev_targp->dev != logdev || | |
599 | mp->m_logdev_targp->bt_mount != mp) { | |
600 | fprintf(stderr, | |
601 | _("%s: bad buftarg reinit, logdev\n"), | |
602 | progname); | |
603 | exit(1); | |
604 | } | |
605 | if (rtdev && (mp->m_rtdev_targp->dev != rtdev || | |
606 | mp->m_rtdev_targp->bt_mount != mp)) { | |
607 | fprintf(stderr, | |
608 | _("%s: bad buftarg reinit, rtdev\n"), | |
609 | progname); | |
610 | exit(1); | |
611 | } | |
612 | return; | |
613 | } | |
614 | ||
615 | mp->m_ddev_targp = libxfs_buftarg_alloc(mp, dev); | |
616 | if (!logdev || logdev == dev) | |
617 | mp->m_logdev_targp = mp->m_ddev_targp; | |
618 | else | |
619 | mp->m_logdev_targp = libxfs_buftarg_alloc(mp, logdev); | |
620 | mp->m_rtdev_targp = libxfs_buftarg_alloc(mp, rtdev); | |
621 | } | |
622 | ||
2bd0ea18 NS |
623 | /* |
624 | * Mount structure initialization, provides a filled-in xfs_mount_t | |
625 | * such that the numerous XFS_* macros can be used. If dev is zero, | |
626 | * no IO will be performed (no size checks, read root inodes). | |
627 | */ | |
628 | xfs_mount_t * | |
629 | libxfs_mount( | |
630 | xfs_mount_t *mp, | |
631 | xfs_sb_t *sb, | |
632 | dev_t dev, | |
633 | dev_t logdev, | |
634 | dev_t rtdev, | |
4ca431fc | 635 | int flags) |
2bd0ea18 NS |
636 | { |
637 | xfs_daddr_t d; | |
638 | xfs_buf_t *bp; | |
639 | xfs_sb_t *sbp; | |
2bd0ea18 NS |
640 | int error; |
641 | ||
75c8b434 DC |
642 | libxfs_buftarg_init(mp, dev, logdev, rtdev); |
643 | ||
f747f7dd | 644 | mp->m_finobt_nores = true; |
6239071d | 645 | mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); |
2bd0ea18 | 646 | mp->m_sb = *sb; |
56b2de80 | 647 | INIT_RADIX_TREE(&mp->m_perag_tree, GFP_KERNEL); |
2bd0ea18 | 648 | sbp = &(mp->m_sb); |
2bd0ea18 | 649 | |
4896e6c8 | 650 | xfs_sb_mount_common(mp, sb); |
2bd0ea18 | 651 | |
949c0f10 NS |
652 | /* |
653 | * Set whether we're using stripe alignment. | |
654 | */ | |
5e656dbb | 655 | if (xfs_sb_version_hasdalign(&mp->m_sb)) { |
949c0f10 NS |
656 | mp->m_dalign = sbp->sb_unit; |
657 | mp->m_swidth = sbp->sb_width; | |
658 | } | |
659 | ||
3a05ab22 DW |
660 | xfs_alloc_compute_maxlevels(mp); |
661 | xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); | |
662 | xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); | |
663 | xfs_ialloc_setup_geometry(mp); | |
664 | xfs_rmapbt_compute_maxlevels(mp); | |
665 | xfs_refcountbt_compute_maxlevels(mp); | |
2bd0ea18 NS |
666 | |
667 | /* | |
668 | * Check that the data (and log if separate) are an ok size. | |
669 | */ | |
9440d84d | 670 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); |
2bd0ea18 | 671 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { |
9440d84d | 672 | fprintf(stderr, _("%s: size check failed\n"), progname); |
4ca431fc NS |
673 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
674 | return NULL; | |
2bd0ea18 NS |
675 | } |
676 | ||
ff105f75 DC |
677 | /* |
678 | * We automatically convert v1 inodes to v2 inodes now, so if | |
679 | * the NLINK bit is not set we can't operate on the filesystem. | |
680 | */ | |
681 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { | |
682 | ||
683 | fprintf(stderr, _( | |
684 | "%s: V1 inodes unsupported. Please try an older xfsprogs.\n"), | |
685 | progname); | |
686 | exit(1); | |
687 | } | |
688 | ||
689 | /* Check for supported directory formats */ | |
690 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT)) { | |
9a048535 DC |
691 | |
692 | fprintf(stderr, _( | |
693 | "%s: V1 directories unsupported. Please try an older xfsprogs.\n"), | |
694 | progname); | |
695 | exit(1); | |
5e656dbb | 696 | } |
2bd0ea18 | 697 | |
ff105f75 DC |
698 | /* check for unsupported other features */ |
699 | if (!xfs_sb_good_version(sbp)) { | |
700 | fprintf(stderr, _( | |
701 | "%s: Unsupported features detected. Please try a newer xfsprogs.\n"), | |
702 | progname); | |
703 | exit(1); | |
704 | } | |
705 | ||
706 | xfs_da_mount(mp); | |
707 | ||
5e656dbb BN |
708 | if (xfs_sb_version_hasattr2(&mp->m_sb)) |
709 | mp->m_flags |= LIBXFS_MOUNT_ATTR2; | |
57c9fccb | 710 | |
2bd0ea18 | 711 | /* Initialize the precomputed transaction reservations values */ |
5e656dbb | 712 | xfs_trans_init(mp); |
2bd0ea18 NS |
713 | |
714 | if (dev == 0) /* maxtrres, we have no device so leave now */ | |
715 | return mp; | |
716 | ||
9440d84d | 717 | bp = libxfs_readbuf(mp->m_dev, |
4ca431fc | 718 | d - XFS_FSS_TO_BB(mp, 1), XFS_FSS_TO_BB(mp, 1), |
75c8b434 | 719 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL); |
9440d84d NS |
720 | if (!bp) { |
721 | fprintf(stderr, _("%s: data size check failed\n"), progname); | |
4ca431fc NS |
722 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
723 | return NULL; | |
32244196 BN |
724 | } else |
725 | libxfs_putbuf(bp); | |
2bd0ea18 | 726 | |
75c8b434 DC |
727 | if (mp->m_logdev_targp->dev && |
728 | mp->m_logdev_targp->dev != mp->m_ddev_targp->dev) { | |
9440d84d | 729 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); |
2bd0ea18 | 730 | if ( (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) || |
75c8b434 | 731 | (!(bp = libxfs_readbuf(mp->m_logdev_targp, |
9440d84d | 732 | d - XFS_FSB_TO_BB(mp, 1), |
4ca431fc | 733 | XFS_FSB_TO_BB(mp, 1), |
75c8b434 | 734 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL))) ) { |
9440d84d | 735 | fprintf(stderr, _("%s: log size checks failed\n"), |
2bd0ea18 | 736 | progname); |
4ca431fc NS |
737 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
738 | return NULL; | |
2bd0ea18 | 739 | } |
32244196 BN |
740 | if (bp) |
741 | libxfs_putbuf(bp); | |
2bd0ea18 NS |
742 | } |
743 | ||
744 | /* Initialize realtime fields in the mount structure */ | |
39798eb5 | 745 | if (rtmount_init(mp, flags)) { |
9440d84d NS |
746 | fprintf(stderr, _("%s: realtime device init failed\n"), |
747 | progname); | |
4ca431fc | 748 | return NULL; |
2bd0ea18 NS |
749 | } |
750 | ||
a547152d ES |
751 | /* |
752 | * libxfs_initialize_perag will allocate a perag structure for each ag. | |
753 | * If agcount is corrupted and insanely high, this will OOM the box. | |
754 | * If the agount seems (arbitrarily) high, try to read what would be | |
755 | * the last AG, and if that fails for a relatively high agcount, just | |
756 | * read the first one and let the user know to check the geometry. | |
757 | */ | |
758 | if (sbp->sb_agcount > 1000000) { | |
759 | bp = libxfs_readbuf(mp->m_dev, | |
760 | XFS_AG_DADDR(mp, sbp->sb_agcount - 1, 0), 1, | |
761 | !(flags & LIBXFS_MOUNT_DEBUGGER), NULL); | |
762 | if (bp->b_error) { | |
763 | fprintf(stderr, _("%s: read of AG %u failed\n"), | |
764 | progname, sbp->sb_agcount); | |
765 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) | |
766 | return NULL; | |
767 | fprintf(stderr, _("%s: limiting reads to AG 0\n"), | |
768 | progname); | |
769 | sbp->sb_agcount = 1; | |
770 | } | |
771 | libxfs_putbuf(bp); | |
772 | } | |
773 | ||
56b2de80 DC |
774 | error = libxfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi); |
775 | if (error) { | |
776 | fprintf(stderr, _("%s: perag init failed\n"), | |
777 | progname); | |
2bd0ea18 NS |
778 | exit(1); |
779 | } | |
780 | ||
2bd0ea18 NS |
781 | return mp; |
782 | } | |
783 | ||
f1b058f9 NS |
784 | void |
785 | libxfs_rtmount_destroy(xfs_mount_t *mp) | |
786 | { | |
787 | if (mp->m_rsumip) | |
31845e4c | 788 | libxfs_irele(mp->m_rsumip); |
f1b058f9 | 789 | if (mp->m_rbmip) |
31845e4c | 790 | libxfs_irele(mp->m_rbmip); |
f1b058f9 NS |
791 | mp->m_rsumip = mp->m_rbmip = NULL; |
792 | } | |
793 | ||
2bd0ea18 | 794 | /* |
9440d84d | 795 | * Release any resource obtained during a mount. |
2bd0ea18 NS |
796 | */ |
797 | void | |
798 | libxfs_umount(xfs_mount_t *mp) | |
799 | { | |
56b2de80 DC |
800 | struct xfs_perag *pag; |
801 | int agno; | |
802 | ||
f1b058f9 | 803 | libxfs_rtmount_destroy(mp); |
f1b058f9 NS |
804 | libxfs_bcache_purge(); |
805 | ||
56b2de80 DC |
806 | for (agno = 0; agno < mp->m_maxagi; agno++) { |
807 | pag = radix_tree_delete(&mp->m_perag_tree, agno); | |
808 | kmem_free(pag); | |
fceb0d99 | 809 | } |
4334e2e8 ES |
810 | |
811 | kmem_free(mp->m_attr_geo); | |
812 | kmem_free(mp->m_dir_geo); | |
813 | ||
814 | kmem_free(mp->m_rtdev_targp); | |
815 | if (mp->m_logdev_targp != mp->m_ddev_targp) | |
816 | kmem_free(mp->m_logdev_targp); | |
817 | kmem_free(mp->m_ddev_targp); | |
f8149110 | 818 | |
2bd0ea18 | 819 | } |
f1b058f9 NS |
820 | |
821 | /* | |
822 | * Release any global resources used by libxfs. | |
823 | */ | |
824 | void | |
825 | libxfs_destroy(void) | |
826 | { | |
44488491 ES |
827 | int leaked; |
828 | ||
864028ed ES |
829 | /* Free everything from the buffer cache before freeing buffer zone */ |
830 | libxfs_bcache_purge(); | |
831 | libxfs_bcache_free(); | |
f1b058f9 | 832 | cache_destroy(libxfs_bcache); |
7a326ce0 | 833 | leaked = destroy_zones(); |
44488491 ES |
834 | if (getenv("LIBXFS_LEAK_CHECK") && leaked) |
835 | exit(1); | |
f1b058f9 | 836 | } |
9f38f08d | 837 | |
b74a1f6a NS |
838 | int |
839 | libxfs_device_alignment(void) | |
840 | { | |
841 | return platform_align_blockdev(); | |
842 | } | |
843 | ||
9f38f08d | 844 | void |
b6281496 | 845 | libxfs_report(FILE *fp) |
9f38f08d | 846 | { |
cb5b3ef4 MV |
847 | time_t t; |
848 | char *c; | |
849 | ||
b6281496 | 850 | cache_report(fp, "libxfs_bcache", libxfs_bcache); |
cb5b3ef4 MV |
851 | |
852 | t = time(NULL); | |
853 | c = asctime(localtime(&t)); | |
854 | fprintf(fp, "%s", c); | |
855 | } |