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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 | |
167137fe | 33 | int use_xfs_buf_lock; /* global flag: use xfs_buf locks for MT */ |
d0572de5 | 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) { |
023ba280 | 169 | int fd, ret; |
5000d01d | 170 | |
32181a02 NS |
171 | fd = dev_map[d].fd; |
172 | dev_map[d].dev = dev_map[d].fd = 0; | |
5000d01d | 173 | |
023ba280 DW |
174 | ret = platform_flush_device(fd, dev); |
175 | if (ret) { | |
176 | ret = -errno; | |
177 | fprintf(stderr, | |
178 | _("%s: flush of device %lld failed, err=%d"), | |
179 | progname, (long long)dev, ret); | |
180 | } | |
2bd0ea18 | 181 | close(fd); |
5000d01d | 182 | |
2bd0ea18 NS |
183 | return; |
184 | } | |
185 | ||
9440d84d NS |
186 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
187 | progname, __FUNCTION__, (long long)dev); | |
2bd0ea18 NS |
188 | exit(1); |
189 | } | |
190 | ||
74668075 NS |
191 | static int |
192 | check_open(char *path, int flags, char **rawfile, char **blockfile) | |
193 | { | |
c781939c RC |
194 | int readonly = (flags & LIBXFS_ISREADONLY); |
195 | int inactive = (flags & LIBXFS_ISINACTIVE); | |
196 | int dangerously = (flags & LIBXFS_DANGEROUSLY); | |
f594a0d1 | 197 | struct stat stbuf; |
c781939c | 198 | |
f594a0d1 | 199 | if (stat(path, &stbuf) < 0) { |
c781939c RC |
200 | perror(path); |
201 | return 0; | |
202 | } | |
b74a1f6a | 203 | if (!(*rawfile = platform_findrawpath(path))) { |
c781939c RC |
204 | fprintf(stderr, _("%s: " |
205 | "can't find a character device matching %s\n"), | |
206 | progname, path); | |
207 | return 0; | |
208 | } | |
b74a1f6a | 209 | if (!(*blockfile = platform_findblockpath(path))) { |
c781939c RC |
210 | fprintf(stderr, _("%s: " |
211 | "can't find a block device matching %s\n"), | |
212 | progname, path); | |
213 | return 0; | |
214 | } | |
215 | if (!readonly && !inactive && platform_check_ismounted(path, *blockfile, NULL, 1)) | |
216 | return 0; | |
e08f5594 | 217 | |
c781939c RC |
218 | if (inactive && check_isactive(path, *blockfile, ((readonly|dangerously)?1:0))) |
219 | return 0; | |
220 | ||
221 | return 1; | |
222 | } | |
223 | ||
7a326ce0 ES |
224 | /* |
225 | * Initialize/destroy all of the zone allocators we use. | |
226 | */ | |
227 | static void | |
228 | init_zones(void) | |
229 | { | |
230 | /* initialise zone allocation */ | |
231 | xfs_buf_zone = kmem_zone_init(sizeof(struct xfs_buf), "xfs_buffer"); | |
232 | xfs_inode_zone = kmem_zone_init(sizeof(struct xfs_inode), "xfs_inode"); | |
233 | xfs_ifork_zone = kmem_zone_init(sizeof(struct xfs_ifork), "xfs_ifork"); | |
234 | xfs_ili_zone = kmem_zone_init( | |
235 | sizeof(struct xfs_inode_log_item),"xfs_inode_log_item"); | |
236 | xfs_buf_item_zone = kmem_zone_init( | |
237 | sizeof(struct xfs_buf_log_item), "xfs_buf_log_item"); | |
238 | xfs_da_state_zone = kmem_zone_init( | |
239 | sizeof(struct xfs_da_state), "xfs_da_state"); | |
240 | xfs_btree_cur_zone = kmem_zone_init( | |
241 | sizeof(struct xfs_btree_cur), "xfs_btree_cur"); | |
242 | xfs_bmap_free_item_zone = kmem_zone_init( | |
243 | sizeof(struct xfs_extent_free_item), | |
244 | "xfs_bmap_free_item"); | |
245 | xfs_trans_zone = kmem_zone_init( | |
246 | sizeof(struct xfs_trans), "xfs_trans"); | |
247 | } | |
248 | ||
249 | static int | |
250 | destroy_zones(void) | |
251 | { | |
252 | int leaked = 0; | |
253 | ||
254 | leaked += kmem_zone_destroy(xfs_buf_zone); | |
255 | leaked += kmem_zone_destroy(xfs_ili_zone); | |
256 | leaked += kmem_zone_destroy(xfs_inode_zone); | |
257 | leaked += kmem_zone_destroy(xfs_ifork_zone); | |
258 | leaked += kmem_zone_destroy(xfs_buf_item_zone); | |
259 | leaked += kmem_zone_destroy(xfs_da_state_zone); | |
260 | leaked += kmem_zone_destroy(xfs_btree_cur_zone); | |
261 | leaked += kmem_zone_destroy(xfs_bmap_free_item_zone); | |
262 | leaked += kmem_zone_destroy(xfs_trans_zone); | |
263 | ||
264 | return leaked; | |
265 | } | |
266 | ||
a9468486 DW |
267 | static void |
268 | libxfs_close_devices( | |
269 | struct libxfs_xinit *li) | |
270 | { | |
271 | if (li->ddev) | |
272 | libxfs_device_close(li->ddev); | |
273 | if (li->logdev && li->logdev != li->ddev) | |
274 | libxfs_device_close(li->logdev); | |
275 | if (li->rtdev) | |
276 | libxfs_device_close(li->rtdev); | |
277 | ||
278 | li->ddev = li->logdev = li->rtdev = 0; | |
279 | li->dfd = li->logfd = li->rtfd = -1; | |
280 | } | |
281 | ||
2bd0ea18 NS |
282 | /* |
283 | * libxfs initialization. | |
284 | * Caller gets a 0 on failure (and we print a message), 1 on success. | |
285 | */ | |
286 | int | |
287 | libxfs_init(libxfs_init_t *a) | |
288 | { | |
289 | char *blockfile; | |
2bd0ea18 NS |
290 | char *dname; |
291 | char dpath[25]; | |
292 | int fd; | |
293 | char *logname; | |
294 | char logpath[25]; | |
2bd0ea18 NS |
295 | char *rawfile; |
296 | char *rtname; | |
297 | char rtpath[25]; | |
298 | int rval = 0; | |
c781939c | 299 | int flags; |
2bd0ea18 NS |
300 | |
301 | dpath[0] = logpath[0] = rtpath[0] = '\0'; | |
302 | dname = a->dname; | |
303 | logname = a->logname; | |
304 | rtname = a->rtname; | |
2bd0ea18 | 305 | a->dfd = a->logfd = a->rtfd = -1; |
74668075 | 306 | a->ddev = a->logdev = a->rtdev = 0; |
06ac92fd DC |
307 | a->dsize = a->lbsize = a->rtbsize = 0; |
308 | a->dbsize = a->logBBsize = a->logBBstart = a->rtsize = 0; | |
2bd0ea18 | 309 | |
2bd0ea18 | 310 | fd = -1; |
b74a1f6a | 311 | flags = (a->isreadonly | a->isdirect); |
c781939c | 312 | |
bacd44a5 AE |
313 | radix_tree_init(); |
314 | ||
2bd0ea18 | 315 | if (a->volname) { |
c781939c | 316 | if(!check_open(a->volname,flags,&rawfile,&blockfile)) |
2bd0ea18 | 317 | goto done; |
2bd0ea18 | 318 | fd = open(rawfile, O_RDONLY); |
eb37fca5 NS |
319 | dname = a->dname = a->volname; |
320 | a->volname = NULL; | |
2bd0ea18 | 321 | } |
2bd0ea18 | 322 | if (dname) { |
2bd0ea18 | 323 | if (a->disfile) { |
7eb6693f | 324 | a->ddev= libxfs_device_open(dname, a->dcreat, flags, |
c5907b96 | 325 | a->setblksize); |
2bd0ea18 | 326 | a->dfd = libxfs_device_to_fd(a->ddev); |
06ac92fd DC |
327 | platform_findsizes(dname, a->dfd, &a->dsize, |
328 | &a->dbsize); | |
2bd0ea18 | 329 | } else { |
f02037ce | 330 | if (!check_open(dname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
331 | goto done; |
332 | a->ddev = libxfs_device_open(rawfile, | |
7eb6693f | 333 | a->dcreat, flags, a->setblksize); |
2bd0ea18 | 334 | a->dfd = libxfs_device_to_fd(a->ddev); |
f02037ce | 335 | platform_findsizes(rawfile, a->dfd, |
06ac92fd | 336 | &a->dsize, &a->dbsize); |
2bd0ea18 | 337 | } |
2bd0ea18 NS |
338 | } else |
339 | a->dsize = 0; | |
340 | if (logname) { | |
2bd0ea18 NS |
341 | if (a->lisfile) { |
342 | a->logdev = libxfs_device_open(logname, | |
7eb6693f | 343 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 344 | a->logfd = libxfs_device_to_fd(a->logdev); |
06ac92fd DC |
345 | platform_findsizes(dname, a->logfd, &a->logBBsize, |
346 | &a->lbsize); | |
2bd0ea18 | 347 | } else { |
f02037ce | 348 | if (!check_open(logname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
349 | goto done; |
350 | a->logdev = libxfs_device_open(rawfile, | |
7eb6693f | 351 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 352 | a->logfd = libxfs_device_to_fd(a->logdev); |
f02037ce | 353 | platform_findsizes(rawfile, a->logfd, |
06ac92fd | 354 | &a->logBBsize, &a->lbsize); |
2bd0ea18 | 355 | } |
2bd0ea18 NS |
356 | } else |
357 | a->logBBsize = 0; | |
358 | if (rtname) { | |
2bd0ea18 NS |
359 | if (a->risfile) { |
360 | a->rtdev = libxfs_device_open(rtname, | |
7eb6693f | 361 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 362 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
06ac92fd DC |
363 | platform_findsizes(dname, a->rtfd, &a->rtsize, |
364 | &a->rtbsize); | |
2bd0ea18 | 365 | } else { |
f02037ce | 366 | if (!check_open(rtname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
367 | goto done; |
368 | a->rtdev = libxfs_device_open(rawfile, | |
7eb6693f | 369 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 370 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
f02037ce | 371 | platform_findsizes(rawfile, a->rtfd, |
06ac92fd | 372 | &a->rtsize, &a->rtbsize); |
2bd0ea18 | 373 | } |
2bd0ea18 NS |
374 | } else |
375 | a->rtsize = 0; | |
376 | if (a->dsize < 0) { | |
9440d84d | 377 | fprintf(stderr, _("%s: can't get size for data subvolume\n"), |
2bd0ea18 NS |
378 | progname); |
379 | goto done; | |
380 | } | |
381 | if (a->logBBsize < 0) { | |
9440d84d | 382 | fprintf(stderr, _("%s: can't get size for log subvolume\n"), |
2bd0ea18 NS |
383 | progname); |
384 | goto done; | |
385 | } | |
386 | if (a->rtsize < 0) { | |
9440d84d | 387 | fprintf(stderr, _("%s: can't get size for realtime subvolume\n"), |
2bd0ea18 NS |
388 | progname); |
389 | goto done; | |
390 | } | |
9f38f08d MV |
391 | if (!libxfs_bhash_size) |
392 | libxfs_bhash_size = LIBXFS_BHASHSIZE(sbp); | |
ba9ecd40 DC |
393 | libxfs_bcache = cache_init(a->bcache_flags, libxfs_bhash_size, |
394 | &libxfs_bcache_operations); | |
d0572de5 | 395 | use_xfs_buf_lock = a->usebuflock; |
7a326ce0 ES |
396 | xfs_dir_startup(); |
397 | init_zones(); | |
2bd0ea18 NS |
398 | rval = 1; |
399 | done: | |
400 | if (dpath[0]) | |
401 | unlink(dpath); | |
402 | if (logpath[0]) | |
403 | unlink(logpath); | |
404 | if (rtpath[0]) | |
405 | unlink(rtpath); | |
406 | if (fd >= 0) | |
407 | close(fd); | |
a9468486 DW |
408 | if (!rval) |
409 | libxfs_close_devices(a); | |
410 | ||
2bd0ea18 NS |
411 | return rval; |
412 | } | |
413 | ||
414 | ||
b391b7cd NS |
415 | /* |
416 | * Initialize realtime fields in the mount structure. | |
417 | */ | |
418 | static int | |
419 | rtmount_init( | |
39798eb5 NS |
420 | xfs_mount_t *mp, /* file system mount structure */ |
421 | int flags) | |
b391b7cd | 422 | { |
31079e67 DW |
423 | struct xfs_buf *bp; /* buffer for last block of subvolume */ |
424 | struct xfs_sb *sbp; /* filesystem superblock copy in mount */ | |
b391b7cd | 425 | xfs_daddr_t d; /* address of last block of subvolume */ |
31079e67 | 426 | int error; |
b391b7cd NS |
427 | |
428 | sbp = &mp->m_sb; | |
429 | if (sbp->sb_rblocks == 0) | |
430 | return 0; | |
4aaeedc4 DW |
431 | |
432 | if (xfs_sb_version_hasreflink(sbp)) { | |
433 | fprintf(stderr, | |
434 | _("%s: Reflink not compatible with realtime device. Please try a newer xfsprogs.\n"), | |
435 | progname); | |
436 | return -1; | |
437 | } | |
438 | ||
439 | if (xfs_sb_version_hasrmapbt(sbp)) { | |
440 | fprintf(stderr, | |
441 | _("%s: Reverse mapping btree not compatible with realtime device. Please try a newer xfsprogs.\n"), | |
442 | progname); | |
443 | return -1; | |
444 | } | |
445 | ||
ab434d12 | 446 | if (mp->m_rtdev_targp->bt_bdev == 0 && !(flags & LIBXFS_MOUNT_DEBUGGER)) { |
9440d84d | 447 | fprintf(stderr, _("%s: filesystem has a realtime subvolume\n"), |
b391b7cd NS |
448 | progname); |
449 | return -1; | |
450 | } | |
451 | mp->m_rsumlevels = sbp->sb_rextslog + 1; | |
452 | mp->m_rsumsize = | |
453 | (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels * | |
454 | sbp->sb_rbmblocks; | |
455 | mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize); | |
456 | mp->m_rbmip = mp->m_rsumip = NULL; | |
39798eb5 NS |
457 | |
458 | /* | |
459 | * Allow debugger to be run without the realtime device present. | |
460 | */ | |
461 | if (flags & LIBXFS_MOUNT_DEBUGGER) | |
462 | return 0; | |
463 | ||
b391b7cd NS |
464 | /* |
465 | * Check that the realtime section is an ok size. | |
466 | */ | |
467 | d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); | |
468 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { | |
9440d84d NS |
469 | fprintf(stderr, _("%s: realtime init - %llu != %llu\n"), |
470 | progname, (unsigned long long) XFS_BB_TO_FSB(mp, d), | |
b391b7cd NS |
471 | (unsigned long long) mp->m_sb.sb_rblocks); |
472 | return -1; | |
473 | } | |
31079e67 DW |
474 | error = libxfs_buf_read(mp->m_rtdev, d - XFS_FSB_TO_BB(mp, 1), |
475 | XFS_FSB_TO_BB(mp, 1), 0, &bp, NULL); | |
476 | if (error) { | |
9440d84d NS |
477 | fprintf(stderr, _("%s: realtime size check failed\n"), |
478 | progname); | |
b391b7cd NS |
479 | return -1; |
480 | } | |
e02ba985 | 481 | libxfs_buf_relse(bp); |
b391b7cd NS |
482 | return 0; |
483 | } | |
484 | ||
56b2de80 DC |
485 | static int |
486 | libxfs_initialize_perag( | |
487 | xfs_mount_t *mp, | |
488 | xfs_agnumber_t agcount, | |
489 | xfs_agnumber_t *maxagi) | |
490 | { | |
491 | xfs_agnumber_t index, max_metadata; | |
492 | xfs_agnumber_t first_initialised = 0; | |
493 | xfs_perag_t *pag; | |
494 | xfs_agino_t agino; | |
495 | xfs_ino_t ino; | |
496 | xfs_sb_t *sbp = &mp->m_sb; | |
497 | int error = -ENOMEM; | |
498 | ||
499 | /* | |
500 | * Walk the current per-ag tree so we don't try to initialise AGs | |
501 | * that already exist (growfs case). Allocate and insert all the | |
502 | * AGs we don't find ready for initialisation. | |
503 | */ | |
504 | for (index = 0; index < agcount; index++) { | |
505 | pag = xfs_perag_get(mp, index); | |
506 | if (pag) { | |
507 | xfs_perag_put(pag); | |
508 | continue; | |
509 | } | |
510 | if (!first_initialised) | |
511 | first_initialised = index; | |
512 | ||
513 | pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL); | |
514 | if (!pag) | |
515 | goto out_unwind; | |
516 | pag->pag_agno = index; | |
517 | pag->pag_mount = mp; | |
518 | ||
519 | if (radix_tree_insert(&mp->m_perag_tree, index, pag)) { | |
520 | error = -EEXIST; | |
521 | goto out_unwind; | |
522 | } | |
523 | } | |
524 | ||
525 | /* | |
526 | * If we mount with the inode64 option, or no inode overflows | |
527 | * the legacy 32-bit address space clear the inode32 option. | |
528 | */ | |
7516da71 | 529 | agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1); |
56b2de80 DC |
530 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
531 | ||
532 | if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) | |
533 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
534 | else | |
535 | mp->m_flags &= ~XFS_MOUNT_32BITINODES; | |
536 | ||
537 | if (mp->m_flags & XFS_MOUNT_32BITINODES) { | |
538 | /* | |
539 | * Calculate how much should be reserved for inodes to meet | |
540 | * the max inode percentage. | |
541 | */ | |
e7fd2b6f | 542 | if (M_IGEO(mp)->maxicount) { |
14f8b681 | 543 | uint64_t icount; |
56b2de80 DC |
544 | |
545 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
546 | do_div(icount, 100); | |
547 | icount += sbp->sb_agblocks - 1; | |
548 | do_div(icount, sbp->sb_agblocks); | |
549 | max_metadata = icount; | |
550 | } else { | |
551 | max_metadata = agcount; | |
552 | } | |
553 | ||
554 | for (index = 0; index < agcount; index++) { | |
555 | ino = XFS_AGINO_TO_INO(mp, index, agino); | |
556 | if (ino > XFS_MAXINUMBER_32) { | |
557 | index++; | |
558 | break; | |
559 | } | |
560 | ||
561 | pag = xfs_perag_get(mp, index); | |
562 | pag->pagi_inodeok = 1; | |
563 | if (index < max_metadata) | |
564 | pag->pagf_metadata = 1; | |
565 | xfs_perag_put(pag); | |
566 | } | |
567 | } else { | |
568 | for (index = 0; index < agcount; index++) { | |
569 | pag = xfs_perag_get(mp, index); | |
570 | pag->pagi_inodeok = 1; | |
571 | xfs_perag_put(pag); | |
572 | } | |
573 | } | |
574 | ||
575 | if (maxagi) | |
576 | *maxagi = index; | |
ef5340cd DW |
577 | |
578 | mp->m_ag_prealloc_blocks = xfs_prealloc_blocks(mp); | |
56b2de80 DC |
579 | return 0; |
580 | ||
581 | out_unwind: | |
582 | kmem_free(pag); | |
583 | for (; index > first_initialised; index--) { | |
584 | pag = radix_tree_delete(&mp->m_perag_tree, index); | |
585 | kmem_free(pag); | |
586 | } | |
587 | return error; | |
588 | } | |
589 | ||
75c8b434 DC |
590 | static struct xfs_buftarg * |
591 | libxfs_buftarg_alloc( | |
592 | struct xfs_mount *mp, | |
593 | dev_t dev) | |
594 | { | |
595 | struct xfs_buftarg *btp; | |
596 | ||
597 | btp = malloc(sizeof(*btp)); | |
598 | if (!btp) { | |
599 | fprintf(stderr, _("%s: buftarg init failed\n"), | |
600 | progname); | |
601 | exit(1); | |
602 | } | |
603 | btp->bt_mount = mp; | |
ab434d12 | 604 | btp->bt_bdev = dev; |
c335b673 DW |
605 | btp->flags = 0; |
606 | ||
75c8b434 DC |
607 | return btp; |
608 | } | |
609 | ||
610 | void | |
611 | libxfs_buftarg_init( | |
612 | struct xfs_mount *mp, | |
613 | dev_t dev, | |
614 | dev_t logdev, | |
615 | dev_t rtdev) | |
616 | { | |
617 | if (mp->m_ddev_targp) { | |
618 | /* should already have all buftargs initialised */ | |
ab434d12 | 619 | if (mp->m_ddev_targp->bt_bdev != dev || |
75c8b434 DC |
620 | mp->m_ddev_targp->bt_mount != mp) { |
621 | fprintf(stderr, | |
622 | _("%s: bad buftarg reinit, ddev\n"), | |
623 | progname); | |
624 | exit(1); | |
625 | } | |
626 | if (!logdev || logdev == dev) { | |
627 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
628 | fprintf(stderr, | |
629 | _("%s: bad buftarg reinit, ldev mismatch\n"), | |
630 | progname); | |
631 | exit(1); | |
632 | } | |
ab434d12 | 633 | } else if (mp->m_logdev_targp->bt_bdev != logdev || |
75c8b434 DC |
634 | mp->m_logdev_targp->bt_mount != mp) { |
635 | fprintf(stderr, | |
636 | _("%s: bad buftarg reinit, logdev\n"), | |
637 | progname); | |
638 | exit(1); | |
639 | } | |
ab434d12 | 640 | if (rtdev && (mp->m_rtdev_targp->bt_bdev != rtdev || |
75c8b434 DC |
641 | mp->m_rtdev_targp->bt_mount != mp)) { |
642 | fprintf(stderr, | |
643 | _("%s: bad buftarg reinit, rtdev\n"), | |
644 | progname); | |
645 | exit(1); | |
646 | } | |
647 | return; | |
648 | } | |
649 | ||
650 | mp->m_ddev_targp = libxfs_buftarg_alloc(mp, dev); | |
651 | if (!logdev || logdev == dev) | |
652 | mp->m_logdev_targp = mp->m_ddev_targp; | |
653 | else | |
654 | mp->m_logdev_targp = libxfs_buftarg_alloc(mp, logdev); | |
655 | mp->m_rtdev_targp = libxfs_buftarg_alloc(mp, rtdev); | |
656 | } | |
657 | ||
2bd0ea18 NS |
658 | /* |
659 | * Mount structure initialization, provides a filled-in xfs_mount_t | |
660 | * such that the numerous XFS_* macros can be used. If dev is zero, | |
661 | * no IO will be performed (no size checks, read root inodes). | |
662 | */ | |
d855bce8 | 663 | struct xfs_mount * |
2bd0ea18 | 664 | libxfs_mount( |
d855bce8 DW |
665 | struct xfs_mount *mp, |
666 | struct xfs_sb *sb, | |
667 | dev_t dev, | |
668 | dev_t logdev, | |
669 | dev_t rtdev, | |
670 | int flags) | |
2bd0ea18 | 671 | { |
d855bce8 DW |
672 | struct xfs_buf *bp; |
673 | struct xfs_sb *sbp; | |
674 | xfs_daddr_t d; | |
675 | bool debugger = (flags & LIBXFS_MOUNT_DEBUGGER); | |
676 | int error; | |
2bd0ea18 | 677 | |
75c8b434 DC |
678 | libxfs_buftarg_init(mp, dev, logdev, rtdev); |
679 | ||
f747f7dd | 680 | mp->m_finobt_nores = true; |
6239071d | 681 | mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); |
2bd0ea18 | 682 | mp->m_sb = *sb; |
56b2de80 | 683 | INIT_RADIX_TREE(&mp->m_perag_tree, GFP_KERNEL); |
2bd0ea18 | 684 | sbp = &(mp->m_sb); |
2bd0ea18 | 685 | |
4896e6c8 | 686 | xfs_sb_mount_common(mp, sb); |
2bd0ea18 | 687 | |
949c0f10 NS |
688 | /* |
689 | * Set whether we're using stripe alignment. | |
690 | */ | |
5e656dbb | 691 | if (xfs_sb_version_hasdalign(&mp->m_sb)) { |
949c0f10 NS |
692 | mp->m_dalign = sbp->sb_unit; |
693 | mp->m_swidth = sbp->sb_width; | |
694 | } | |
695 | ||
3a05ab22 DW |
696 | xfs_alloc_compute_maxlevels(mp); |
697 | xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); | |
698 | xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); | |
699 | xfs_ialloc_setup_geometry(mp); | |
700 | xfs_rmapbt_compute_maxlevels(mp); | |
701 | xfs_refcountbt_compute_maxlevels(mp); | |
2bd0ea18 NS |
702 | |
703 | /* | |
704 | * Check that the data (and log if separate) are an ok size. | |
705 | */ | |
9440d84d | 706 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); |
2bd0ea18 | 707 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { |
9440d84d | 708 | fprintf(stderr, _("%s: size check failed\n"), progname); |
4ca431fc NS |
709 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
710 | return NULL; | |
2bd0ea18 NS |
711 | } |
712 | ||
ff105f75 DC |
713 | /* |
714 | * We automatically convert v1 inodes to v2 inodes now, so if | |
715 | * the NLINK bit is not set we can't operate on the filesystem. | |
716 | */ | |
717 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { | |
718 | ||
719 | fprintf(stderr, _( | |
720 | "%s: V1 inodes unsupported. Please try an older xfsprogs.\n"), | |
721 | progname); | |
722 | exit(1); | |
723 | } | |
724 | ||
725 | /* Check for supported directory formats */ | |
726 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT)) { | |
9a048535 DC |
727 | |
728 | fprintf(stderr, _( | |
729 | "%s: V1 directories unsupported. Please try an older xfsprogs.\n"), | |
730 | progname); | |
731 | exit(1); | |
5e656dbb | 732 | } |
2bd0ea18 | 733 | |
ff105f75 DC |
734 | /* check for unsupported other features */ |
735 | if (!xfs_sb_good_version(sbp)) { | |
736 | fprintf(stderr, _( | |
737 | "%s: Unsupported features detected. Please try a newer xfsprogs.\n"), | |
738 | progname); | |
739 | exit(1); | |
740 | } | |
741 | ||
742 | xfs_da_mount(mp); | |
743 | ||
5e656dbb BN |
744 | if (xfs_sb_version_hasattr2(&mp->m_sb)) |
745 | mp->m_flags |= LIBXFS_MOUNT_ATTR2; | |
57c9fccb | 746 | |
2bd0ea18 | 747 | /* Initialize the precomputed transaction reservations values */ |
5e656dbb | 748 | xfs_trans_init(mp); |
2bd0ea18 NS |
749 | |
750 | if (dev == 0) /* maxtrres, we have no device so leave now */ | |
751 | return mp; | |
752 | ||
d855bce8 | 753 | /* device size checks must pass unless we're a debugger. */ |
31079e67 DW |
754 | error = libxfs_buf_read(mp->m_dev, d - XFS_FSS_TO_BB(mp, 1), |
755 | XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); | |
756 | if (error) { | |
9440d84d | 757 | fprintf(stderr, _("%s: data size check failed\n"), progname); |
d855bce8 | 758 | if (!debugger) |
4ca431fc | 759 | return NULL; |
32244196 | 760 | } else |
e02ba985 | 761 | libxfs_buf_relse(bp); |
2bd0ea18 | 762 | |
ab434d12 DC |
763 | if (mp->m_logdev_targp->bt_bdev && |
764 | mp->m_logdev_targp->bt_bdev != mp->m_ddev_targp->bt_bdev) { | |
9440d84d | 765 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); |
31079e67 DW |
766 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks || |
767 | libxfs_buf_read(mp->m_logdev_targp, | |
768 | d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), | |
769 | 0, &bp, NULL)) { | |
9440d84d | 770 | fprintf(stderr, _("%s: log size checks failed\n"), |
2bd0ea18 | 771 | progname); |
d855bce8 | 772 | if (!debugger) |
4ca431fc | 773 | return NULL; |
2bd0ea18 | 774 | } |
32244196 | 775 | if (bp) |
e02ba985 | 776 | libxfs_buf_relse(bp); |
2bd0ea18 NS |
777 | } |
778 | ||
779 | /* Initialize realtime fields in the mount structure */ | |
39798eb5 | 780 | if (rtmount_init(mp, flags)) { |
9440d84d NS |
781 | fprintf(stderr, _("%s: realtime device init failed\n"), |
782 | progname); | |
4ca431fc | 783 | return NULL; |
2bd0ea18 NS |
784 | } |
785 | ||
a547152d ES |
786 | /* |
787 | * libxfs_initialize_perag will allocate a perag structure for each ag. | |
788 | * If agcount is corrupted and insanely high, this will OOM the box. | |
789 | * If the agount seems (arbitrarily) high, try to read what would be | |
790 | * the last AG, and if that fails for a relatively high agcount, just | |
791 | * read the first one and let the user know to check the geometry. | |
792 | */ | |
793 | if (sbp->sb_agcount > 1000000) { | |
31079e67 | 794 | error = libxfs_buf_read(mp->m_dev, |
a547152d | 795 | XFS_AG_DADDR(mp, sbp->sb_agcount - 1, 0), 1, |
31079e67 DW |
796 | 0, &bp, NULL); |
797 | if (error) { | |
a547152d ES |
798 | fprintf(stderr, _("%s: read of AG %u failed\n"), |
799 | progname, sbp->sb_agcount); | |
d855bce8 | 800 | if (!debugger) |
a547152d ES |
801 | return NULL; |
802 | fprintf(stderr, _("%s: limiting reads to AG 0\n"), | |
803 | progname); | |
804 | sbp->sb_agcount = 1; | |
31079e67 DW |
805 | } else |
806 | libxfs_buf_relse(bp); | |
a547152d ES |
807 | } |
808 | ||
56b2de80 DC |
809 | error = libxfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi); |
810 | if (error) { | |
811 | fprintf(stderr, _("%s: perag init failed\n"), | |
812 | progname); | |
2bd0ea18 NS |
813 | exit(1); |
814 | } | |
815 | ||
2bd0ea18 NS |
816 | return mp; |
817 | } | |
818 | ||
f1b058f9 NS |
819 | void |
820 | libxfs_rtmount_destroy(xfs_mount_t *mp) | |
821 | { | |
822 | if (mp->m_rsumip) | |
31845e4c | 823 | libxfs_irele(mp->m_rsumip); |
f1b058f9 | 824 | if (mp->m_rbmip) |
31845e4c | 825 | libxfs_irele(mp->m_rbmip); |
f1b058f9 NS |
826 | mp->m_rsumip = mp->m_rbmip = NULL; |
827 | } | |
828 | ||
c335b673 DW |
829 | /* Flush a device and report on writes that didn't make it to stable storage. */ |
830 | static inline int | |
831 | libxfs_flush_buftarg( | |
832 | struct xfs_buftarg *btp, | |
833 | const char *buftarg_descr) | |
834 | { | |
835 | int error = 0; | |
836 | int err2; | |
837 | ||
838 | /* | |
839 | * Write verifier failures are evidence of a buggy program. Make sure | |
840 | * that this state is always reported to the caller. | |
841 | */ | |
842 | if (btp->flags & XFS_BUFTARG_CORRUPT_WRITE) { | |
843 | fprintf(stderr, | |
844 | _("%s: Refusing to write a corrupt buffer to the %s!\n"), | |
845 | progname, buftarg_descr); | |
846 | error = -EFSCORRUPTED; | |
847 | } | |
848 | ||
849 | if (btp->flags & XFS_BUFTARG_LOST_WRITE) { | |
850 | fprintf(stderr, | |
851 | _("%s: Lost a write to the %s!\n"), | |
852 | progname, buftarg_descr); | |
853 | if (!error) | |
854 | error = -EIO; | |
855 | } | |
856 | ||
857 | err2 = libxfs_blkdev_issue_flush(btp); | |
858 | if (err2) { | |
859 | fprintf(stderr, | |
860 | _("%s: Flushing the %s failed, err=%d!\n"), | |
861 | progname, buftarg_descr, -err2); | |
862 | } | |
863 | if (!error) | |
864 | error = err2; | |
865 | ||
866 | return error; | |
867 | } | |
868 | ||
869 | /* | |
870 | * Flush all dirty buffers to stable storage and report on writes that didn't | |
871 | * make it to stable storage. | |
872 | */ | |
a7348c58 | 873 | int |
c335b673 DW |
874 | libxfs_flush_mount( |
875 | struct xfs_mount *mp) | |
876 | { | |
877 | int error = 0; | |
878 | int err2; | |
879 | ||
880 | /* | |
a7348c58 DW |
881 | * Flush the buffer cache to write all dirty buffers to disk. Buffers |
882 | * that fail write verification will cause the CORRUPT_WRITE flag to be | |
883 | * set in the buftarg. Buffers that cannot be written will cause the | |
884 | * LOST_WRITE flag to be set in the buftarg. Once that's done, | |
885 | * instruct the disks to persist their write caches. | |
c335b673 | 886 | */ |
a7348c58 | 887 | libxfs_bcache_flush(); |
c335b673 DW |
888 | |
889 | /* Flush all kernel and disk write caches, and report failures. */ | |
890 | if (mp->m_ddev_targp) { | |
891 | err2 = libxfs_flush_buftarg(mp->m_ddev_targp, _("data device")); | |
892 | if (!error) | |
893 | error = err2; | |
894 | } | |
895 | ||
896 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
897 | err2 = libxfs_flush_buftarg(mp->m_logdev_targp, | |
898 | _("log device")); | |
899 | if (!error) | |
900 | error = err2; | |
901 | } | |
902 | ||
903 | if (mp->m_rtdev_targp) { | |
904 | err2 = libxfs_flush_buftarg(mp->m_rtdev_targp, | |
905 | _("realtime device")); | |
906 | if (!error) | |
907 | error = err2; | |
908 | } | |
909 | ||
910 | return error; | |
911 | } | |
912 | ||
2bd0ea18 | 913 | /* |
9440d84d | 914 | * Release any resource obtained during a mount. |
2bd0ea18 | 915 | */ |
c335b673 DW |
916 | int |
917 | libxfs_umount( | |
918 | struct xfs_mount *mp) | |
2bd0ea18 | 919 | { |
56b2de80 DC |
920 | struct xfs_perag *pag; |
921 | int agno; | |
c335b673 | 922 | int error; |
56b2de80 | 923 | |
f1b058f9 | 924 | libxfs_rtmount_destroy(mp); |
c335b673 | 925 | |
a7348c58 DW |
926 | /* |
927 | * Purge the buffer cache to write all dirty buffers to disk and free | |
928 | * all incore buffers, then pick up the outcome when we tell the disks | |
929 | * to persist their write caches. | |
930 | */ | |
931 | libxfs_bcache_purge(); | |
c335b673 | 932 | error = libxfs_flush_mount(mp); |
f1b058f9 | 933 | |
56b2de80 DC |
934 | for (agno = 0; agno < mp->m_maxagi; agno++) { |
935 | pag = radix_tree_delete(&mp->m_perag_tree, agno); | |
936 | kmem_free(pag); | |
fceb0d99 | 937 | } |
4334e2e8 ES |
938 | |
939 | kmem_free(mp->m_attr_geo); | |
940 | kmem_free(mp->m_dir_geo); | |
941 | ||
942 | kmem_free(mp->m_rtdev_targp); | |
943 | if (mp->m_logdev_targp != mp->m_ddev_targp) | |
944 | kmem_free(mp->m_logdev_targp); | |
945 | kmem_free(mp->m_ddev_targp); | |
f8149110 | 946 | |
c335b673 | 947 | return error; |
2bd0ea18 | 948 | } |
f1b058f9 NS |
949 | |
950 | /* | |
951 | * Release any global resources used by libxfs. | |
952 | */ | |
953 | void | |
a9468486 DW |
954 | libxfs_destroy( |
955 | struct libxfs_xinit *li) | |
f1b058f9 | 956 | { |
a9468486 DW |
957 | int leaked; |
958 | ||
959 | libxfs_close_devices(li); | |
44488491 | 960 | |
864028ed ES |
961 | /* Free everything from the buffer cache before freeing buffer zone */ |
962 | libxfs_bcache_purge(); | |
963 | libxfs_bcache_free(); | |
f1b058f9 | 964 | cache_destroy(libxfs_bcache); |
7a326ce0 | 965 | leaked = destroy_zones(); |
44488491 ES |
966 | if (getenv("LIBXFS_LEAK_CHECK") && leaked) |
967 | exit(1); | |
f1b058f9 | 968 | } |
9f38f08d | 969 | |
b74a1f6a NS |
970 | int |
971 | libxfs_device_alignment(void) | |
972 | { | |
973 | return platform_align_blockdev(); | |
974 | } | |
975 | ||
9f38f08d | 976 | void |
b6281496 | 977 | libxfs_report(FILE *fp) |
9f38f08d | 978 | { |
cb5b3ef4 MV |
979 | time_t t; |
980 | char *c; | |
981 | ||
b6281496 | 982 | cache_report(fp, "libxfs_bcache", libxfs_bcache); |
cb5b3ef4 MV |
983 | |
984 | t = time(NULL); | |
985 | c = asctime(localtime(&t)); | |
986 | fprintf(fp, "%s", c); | |
987 | } |