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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 | ||
a9468486 DW |
262 | static void |
263 | libxfs_close_devices( | |
264 | struct libxfs_xinit *li) | |
265 | { | |
266 | if (li->ddev) | |
267 | libxfs_device_close(li->ddev); | |
268 | if (li->logdev && li->logdev != li->ddev) | |
269 | libxfs_device_close(li->logdev); | |
270 | if (li->rtdev) | |
271 | libxfs_device_close(li->rtdev); | |
272 | ||
273 | li->ddev = li->logdev = li->rtdev = 0; | |
274 | li->dfd = li->logfd = li->rtfd = -1; | |
275 | } | |
276 | ||
2bd0ea18 NS |
277 | /* |
278 | * libxfs initialization. | |
279 | * Caller gets a 0 on failure (and we print a message), 1 on success. | |
280 | */ | |
281 | int | |
282 | libxfs_init(libxfs_init_t *a) | |
283 | { | |
284 | char *blockfile; | |
2bd0ea18 NS |
285 | char *dname; |
286 | char dpath[25]; | |
287 | int fd; | |
288 | char *logname; | |
289 | char logpath[25]; | |
2bd0ea18 NS |
290 | char *rawfile; |
291 | char *rtname; | |
292 | char rtpath[25]; | |
293 | int rval = 0; | |
c781939c | 294 | int flags; |
2bd0ea18 NS |
295 | |
296 | dpath[0] = logpath[0] = rtpath[0] = '\0'; | |
297 | dname = a->dname; | |
298 | logname = a->logname; | |
299 | rtname = a->rtname; | |
2bd0ea18 | 300 | a->dfd = a->logfd = a->rtfd = -1; |
74668075 | 301 | a->ddev = a->logdev = a->rtdev = 0; |
06ac92fd DC |
302 | a->dsize = a->lbsize = a->rtbsize = 0; |
303 | a->dbsize = a->logBBsize = a->logBBstart = a->rtsize = 0; | |
2bd0ea18 | 304 | |
2bd0ea18 | 305 | fd = -1; |
b74a1f6a | 306 | flags = (a->isreadonly | a->isdirect); |
c781939c | 307 | |
bacd44a5 AE |
308 | radix_tree_init(); |
309 | ||
2bd0ea18 | 310 | if (a->volname) { |
c781939c | 311 | if(!check_open(a->volname,flags,&rawfile,&blockfile)) |
2bd0ea18 | 312 | goto done; |
2bd0ea18 | 313 | fd = open(rawfile, O_RDONLY); |
eb37fca5 NS |
314 | dname = a->dname = a->volname; |
315 | a->volname = NULL; | |
2bd0ea18 | 316 | } |
2bd0ea18 | 317 | if (dname) { |
2bd0ea18 | 318 | if (a->disfile) { |
7eb6693f | 319 | a->ddev= libxfs_device_open(dname, a->dcreat, flags, |
c5907b96 | 320 | a->setblksize); |
2bd0ea18 | 321 | a->dfd = libxfs_device_to_fd(a->ddev); |
06ac92fd DC |
322 | platform_findsizes(dname, a->dfd, &a->dsize, |
323 | &a->dbsize); | |
2bd0ea18 | 324 | } else { |
f02037ce | 325 | if (!check_open(dname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
326 | goto done; |
327 | a->ddev = libxfs_device_open(rawfile, | |
7eb6693f | 328 | a->dcreat, flags, a->setblksize); |
2bd0ea18 | 329 | a->dfd = libxfs_device_to_fd(a->ddev); |
f02037ce | 330 | platform_findsizes(rawfile, a->dfd, |
06ac92fd | 331 | &a->dsize, &a->dbsize); |
2bd0ea18 | 332 | } |
2bd0ea18 NS |
333 | } else |
334 | a->dsize = 0; | |
335 | if (logname) { | |
2bd0ea18 NS |
336 | if (a->lisfile) { |
337 | a->logdev = libxfs_device_open(logname, | |
7eb6693f | 338 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 339 | a->logfd = libxfs_device_to_fd(a->logdev); |
06ac92fd DC |
340 | platform_findsizes(dname, a->logfd, &a->logBBsize, |
341 | &a->lbsize); | |
2bd0ea18 | 342 | } else { |
f02037ce | 343 | if (!check_open(logname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
344 | goto done; |
345 | a->logdev = libxfs_device_open(rawfile, | |
7eb6693f | 346 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 347 | a->logfd = libxfs_device_to_fd(a->logdev); |
f02037ce | 348 | platform_findsizes(rawfile, a->logfd, |
06ac92fd | 349 | &a->logBBsize, &a->lbsize); |
2bd0ea18 | 350 | } |
2bd0ea18 NS |
351 | } else |
352 | a->logBBsize = 0; | |
353 | if (rtname) { | |
2bd0ea18 NS |
354 | if (a->risfile) { |
355 | a->rtdev = libxfs_device_open(rtname, | |
7eb6693f | 356 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 357 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
06ac92fd DC |
358 | platform_findsizes(dname, a->rtfd, &a->rtsize, |
359 | &a->rtbsize); | |
2bd0ea18 | 360 | } else { |
f02037ce | 361 | if (!check_open(rtname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
362 | goto done; |
363 | a->rtdev = libxfs_device_open(rawfile, | |
7eb6693f | 364 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 365 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
f02037ce | 366 | platform_findsizes(rawfile, a->rtfd, |
06ac92fd | 367 | &a->rtsize, &a->rtbsize); |
2bd0ea18 | 368 | } |
2bd0ea18 NS |
369 | } else |
370 | a->rtsize = 0; | |
371 | if (a->dsize < 0) { | |
9440d84d | 372 | fprintf(stderr, _("%s: can't get size for data subvolume\n"), |
2bd0ea18 NS |
373 | progname); |
374 | goto done; | |
375 | } | |
376 | if (a->logBBsize < 0) { | |
9440d84d | 377 | fprintf(stderr, _("%s: can't get size for log subvolume\n"), |
2bd0ea18 NS |
378 | progname); |
379 | goto done; | |
380 | } | |
381 | if (a->rtsize < 0) { | |
9440d84d | 382 | fprintf(stderr, _("%s: can't get size for realtime subvolume\n"), |
2bd0ea18 NS |
383 | progname); |
384 | goto done; | |
385 | } | |
9f38f08d MV |
386 | if (!libxfs_bhash_size) |
387 | libxfs_bhash_size = LIBXFS_BHASHSIZE(sbp); | |
ba9ecd40 DC |
388 | libxfs_bcache = cache_init(a->bcache_flags, libxfs_bhash_size, |
389 | &libxfs_bcache_operations); | |
d0572de5 | 390 | use_xfs_buf_lock = a->usebuflock; |
7a326ce0 ES |
391 | xfs_dir_startup(); |
392 | init_zones(); | |
2bd0ea18 NS |
393 | rval = 1; |
394 | done: | |
395 | if (dpath[0]) | |
396 | unlink(dpath); | |
397 | if (logpath[0]) | |
398 | unlink(logpath); | |
399 | if (rtpath[0]) | |
400 | unlink(rtpath); | |
401 | if (fd >= 0) | |
402 | close(fd); | |
a9468486 DW |
403 | if (!rval) |
404 | libxfs_close_devices(a); | |
405 | ||
2bd0ea18 NS |
406 | return rval; |
407 | } | |
408 | ||
409 | ||
b391b7cd NS |
410 | /* |
411 | * Initialize realtime fields in the mount structure. | |
412 | */ | |
413 | static int | |
414 | rtmount_init( | |
39798eb5 NS |
415 | xfs_mount_t *mp, /* file system mount structure */ |
416 | int flags) | |
b391b7cd NS |
417 | { |
418 | xfs_buf_t *bp; /* buffer for last block of subvolume */ | |
419 | xfs_daddr_t d; /* address of last block of subvolume */ | |
420 | xfs_sb_t *sbp; /* filesystem superblock copy in mount */ | |
421 | ||
422 | sbp = &mp->m_sb; | |
423 | if (sbp->sb_rblocks == 0) | |
424 | return 0; | |
75c8b434 | 425 | if (mp->m_rtdev_targp->dev == 0 && !(flags & LIBXFS_MOUNT_DEBUGGER)) { |
9440d84d | 426 | fprintf(stderr, _("%s: filesystem has a realtime subvolume\n"), |
b391b7cd NS |
427 | progname); |
428 | return -1; | |
429 | } | |
430 | mp->m_rsumlevels = sbp->sb_rextslog + 1; | |
431 | mp->m_rsumsize = | |
432 | (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels * | |
433 | sbp->sb_rbmblocks; | |
434 | mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize); | |
435 | mp->m_rbmip = mp->m_rsumip = NULL; | |
39798eb5 NS |
436 | |
437 | /* | |
438 | * Allow debugger to be run without the realtime device present. | |
439 | */ | |
440 | if (flags & LIBXFS_MOUNT_DEBUGGER) | |
441 | return 0; | |
442 | ||
b391b7cd NS |
443 | /* |
444 | * Check that the realtime section is an ok size. | |
445 | */ | |
446 | d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); | |
447 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { | |
9440d84d NS |
448 | fprintf(stderr, _("%s: realtime init - %llu != %llu\n"), |
449 | progname, (unsigned long long) XFS_BB_TO_FSB(mp, d), | |
b391b7cd NS |
450 | (unsigned long long) mp->m_sb.sb_rblocks); |
451 | return -1; | |
452 | } | |
361379e0 | 453 | bp = libxfs_buf_read(mp->m_rtdev, |
75c8b434 | 454 | d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), 0, NULL); |
b391b7cd | 455 | if (bp == NULL) { |
9440d84d NS |
456 | fprintf(stderr, _("%s: realtime size check failed\n"), |
457 | progname); | |
b391b7cd NS |
458 | return -1; |
459 | } | |
e02ba985 | 460 | libxfs_buf_relse(bp); |
b391b7cd NS |
461 | return 0; |
462 | } | |
463 | ||
56b2de80 DC |
464 | static int |
465 | libxfs_initialize_perag( | |
466 | xfs_mount_t *mp, | |
467 | xfs_agnumber_t agcount, | |
468 | xfs_agnumber_t *maxagi) | |
469 | { | |
470 | xfs_agnumber_t index, max_metadata; | |
471 | xfs_agnumber_t first_initialised = 0; | |
472 | xfs_perag_t *pag; | |
473 | xfs_agino_t agino; | |
474 | xfs_ino_t ino; | |
475 | xfs_sb_t *sbp = &mp->m_sb; | |
476 | int error = -ENOMEM; | |
477 | ||
478 | /* | |
479 | * Walk the current per-ag tree so we don't try to initialise AGs | |
480 | * that already exist (growfs case). Allocate and insert all the | |
481 | * AGs we don't find ready for initialisation. | |
482 | */ | |
483 | for (index = 0; index < agcount; index++) { | |
484 | pag = xfs_perag_get(mp, index); | |
485 | if (pag) { | |
486 | xfs_perag_put(pag); | |
487 | continue; | |
488 | } | |
489 | if (!first_initialised) | |
490 | first_initialised = index; | |
491 | ||
492 | pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL); | |
493 | if (!pag) | |
494 | goto out_unwind; | |
495 | pag->pag_agno = index; | |
496 | pag->pag_mount = mp; | |
497 | ||
498 | if (radix_tree_insert(&mp->m_perag_tree, index, pag)) { | |
499 | error = -EEXIST; | |
500 | goto out_unwind; | |
501 | } | |
502 | } | |
503 | ||
504 | /* | |
505 | * If we mount with the inode64 option, or no inode overflows | |
506 | * the legacy 32-bit address space clear the inode32 option. | |
507 | */ | |
7516da71 | 508 | agino = XFS_AGB_TO_AGINO(mp, sbp->sb_agblocks - 1); |
56b2de80 DC |
509 | ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); |
510 | ||
511 | if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) && ino > XFS_MAXINUMBER_32) | |
512 | mp->m_flags |= XFS_MOUNT_32BITINODES; | |
513 | else | |
514 | mp->m_flags &= ~XFS_MOUNT_32BITINODES; | |
515 | ||
516 | if (mp->m_flags & XFS_MOUNT_32BITINODES) { | |
517 | /* | |
518 | * Calculate how much should be reserved for inodes to meet | |
519 | * the max inode percentage. | |
520 | */ | |
e7fd2b6f | 521 | if (M_IGEO(mp)->maxicount) { |
14f8b681 | 522 | uint64_t icount; |
56b2de80 DC |
523 | |
524 | icount = sbp->sb_dblocks * sbp->sb_imax_pct; | |
525 | do_div(icount, 100); | |
526 | icount += sbp->sb_agblocks - 1; | |
527 | do_div(icount, sbp->sb_agblocks); | |
528 | max_metadata = icount; | |
529 | } else { | |
530 | max_metadata = agcount; | |
531 | } | |
532 | ||
533 | for (index = 0; index < agcount; index++) { | |
534 | ino = XFS_AGINO_TO_INO(mp, index, agino); | |
535 | if (ino > XFS_MAXINUMBER_32) { | |
536 | index++; | |
537 | break; | |
538 | } | |
539 | ||
540 | pag = xfs_perag_get(mp, index); | |
541 | pag->pagi_inodeok = 1; | |
542 | if (index < max_metadata) | |
543 | pag->pagf_metadata = 1; | |
544 | xfs_perag_put(pag); | |
545 | } | |
546 | } else { | |
547 | for (index = 0; index < agcount; index++) { | |
548 | pag = xfs_perag_get(mp, index); | |
549 | pag->pagi_inodeok = 1; | |
550 | xfs_perag_put(pag); | |
551 | } | |
552 | } | |
553 | ||
554 | if (maxagi) | |
555 | *maxagi = index; | |
ef5340cd DW |
556 | |
557 | mp->m_ag_prealloc_blocks = xfs_prealloc_blocks(mp); | |
56b2de80 DC |
558 | return 0; |
559 | ||
560 | out_unwind: | |
561 | kmem_free(pag); | |
562 | for (; index > first_initialised; index--) { | |
563 | pag = radix_tree_delete(&mp->m_perag_tree, index); | |
564 | kmem_free(pag); | |
565 | } | |
566 | return error; | |
567 | } | |
568 | ||
75c8b434 DC |
569 | static struct xfs_buftarg * |
570 | libxfs_buftarg_alloc( | |
571 | struct xfs_mount *mp, | |
572 | dev_t dev) | |
573 | { | |
574 | struct xfs_buftarg *btp; | |
575 | ||
576 | btp = malloc(sizeof(*btp)); | |
577 | if (!btp) { | |
578 | fprintf(stderr, _("%s: buftarg init failed\n"), | |
579 | progname); | |
580 | exit(1); | |
581 | } | |
582 | btp->bt_mount = mp; | |
583 | btp->dev = dev; | |
c335b673 DW |
584 | btp->flags = 0; |
585 | ||
75c8b434 DC |
586 | return btp; |
587 | } | |
588 | ||
589 | void | |
590 | libxfs_buftarg_init( | |
591 | struct xfs_mount *mp, | |
592 | dev_t dev, | |
593 | dev_t logdev, | |
594 | dev_t rtdev) | |
595 | { | |
596 | if (mp->m_ddev_targp) { | |
597 | /* should already have all buftargs initialised */ | |
598 | if (mp->m_ddev_targp->dev != dev || | |
599 | mp->m_ddev_targp->bt_mount != mp) { | |
600 | fprintf(stderr, | |
601 | _("%s: bad buftarg reinit, ddev\n"), | |
602 | progname); | |
603 | exit(1); | |
604 | } | |
605 | if (!logdev || logdev == dev) { | |
606 | if (mp->m_logdev_targp != mp->m_ddev_targp) { | |
607 | fprintf(stderr, | |
608 | _("%s: bad buftarg reinit, ldev mismatch\n"), | |
609 | progname); | |
610 | exit(1); | |
611 | } | |
612 | } else if (mp->m_logdev_targp->dev != logdev || | |
613 | mp->m_logdev_targp->bt_mount != mp) { | |
614 | fprintf(stderr, | |
615 | _("%s: bad buftarg reinit, logdev\n"), | |
616 | progname); | |
617 | exit(1); | |
618 | } | |
619 | if (rtdev && (mp->m_rtdev_targp->dev != rtdev || | |
620 | mp->m_rtdev_targp->bt_mount != mp)) { | |
621 | fprintf(stderr, | |
622 | _("%s: bad buftarg reinit, rtdev\n"), | |
623 | progname); | |
624 | exit(1); | |
625 | } | |
626 | return; | |
627 | } | |
628 | ||
629 | mp->m_ddev_targp = libxfs_buftarg_alloc(mp, dev); | |
630 | if (!logdev || logdev == dev) | |
631 | mp->m_logdev_targp = mp->m_ddev_targp; | |
632 | else | |
633 | mp->m_logdev_targp = libxfs_buftarg_alloc(mp, logdev); | |
634 | mp->m_rtdev_targp = libxfs_buftarg_alloc(mp, rtdev); | |
635 | } | |
636 | ||
2bd0ea18 NS |
637 | /* |
638 | * Mount structure initialization, provides a filled-in xfs_mount_t | |
639 | * such that the numerous XFS_* macros can be used. If dev is zero, | |
640 | * no IO will be performed (no size checks, read root inodes). | |
641 | */ | |
d855bce8 | 642 | struct xfs_mount * |
2bd0ea18 | 643 | libxfs_mount( |
d855bce8 DW |
644 | struct xfs_mount *mp, |
645 | struct xfs_sb *sb, | |
646 | dev_t dev, | |
647 | dev_t logdev, | |
648 | dev_t rtdev, | |
649 | int flags) | |
2bd0ea18 | 650 | { |
d855bce8 DW |
651 | struct xfs_buf *bp; |
652 | struct xfs_sb *sbp; | |
653 | xfs_daddr_t d; | |
654 | bool debugger = (flags & LIBXFS_MOUNT_DEBUGGER); | |
655 | int error; | |
2bd0ea18 | 656 | |
75c8b434 DC |
657 | libxfs_buftarg_init(mp, dev, logdev, rtdev); |
658 | ||
f747f7dd | 659 | mp->m_finobt_nores = true; |
6239071d | 660 | mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); |
2bd0ea18 | 661 | mp->m_sb = *sb; |
56b2de80 | 662 | INIT_RADIX_TREE(&mp->m_perag_tree, GFP_KERNEL); |
2bd0ea18 | 663 | sbp = &(mp->m_sb); |
2bd0ea18 | 664 | |
4896e6c8 | 665 | xfs_sb_mount_common(mp, sb); |
2bd0ea18 | 666 | |
949c0f10 NS |
667 | /* |
668 | * Set whether we're using stripe alignment. | |
669 | */ | |
5e656dbb | 670 | if (xfs_sb_version_hasdalign(&mp->m_sb)) { |
949c0f10 NS |
671 | mp->m_dalign = sbp->sb_unit; |
672 | mp->m_swidth = sbp->sb_width; | |
673 | } | |
674 | ||
3a05ab22 DW |
675 | xfs_alloc_compute_maxlevels(mp); |
676 | xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); | |
677 | xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); | |
678 | xfs_ialloc_setup_geometry(mp); | |
679 | xfs_rmapbt_compute_maxlevels(mp); | |
680 | xfs_refcountbt_compute_maxlevels(mp); | |
2bd0ea18 NS |
681 | |
682 | /* | |
683 | * Check that the data (and log if separate) are an ok size. | |
684 | */ | |
9440d84d | 685 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); |
2bd0ea18 | 686 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { |
9440d84d | 687 | fprintf(stderr, _("%s: size check failed\n"), progname); |
4ca431fc NS |
688 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
689 | return NULL; | |
2bd0ea18 NS |
690 | } |
691 | ||
ff105f75 DC |
692 | /* |
693 | * We automatically convert v1 inodes to v2 inodes now, so if | |
694 | * the NLINK bit is not set we can't operate on the filesystem. | |
695 | */ | |
696 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_NLINKBIT)) { | |
697 | ||
698 | fprintf(stderr, _( | |
699 | "%s: V1 inodes unsupported. Please try an older xfsprogs.\n"), | |
700 | progname); | |
701 | exit(1); | |
702 | } | |
703 | ||
704 | /* Check for supported directory formats */ | |
705 | if (!(sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT)) { | |
9a048535 DC |
706 | |
707 | fprintf(stderr, _( | |
708 | "%s: V1 directories unsupported. Please try an older xfsprogs.\n"), | |
709 | progname); | |
710 | exit(1); | |
5e656dbb | 711 | } |
2bd0ea18 | 712 | |
ff105f75 DC |
713 | /* check for unsupported other features */ |
714 | if (!xfs_sb_good_version(sbp)) { | |
715 | fprintf(stderr, _( | |
716 | "%s: Unsupported features detected. Please try a newer xfsprogs.\n"), | |
717 | progname); | |
718 | exit(1); | |
719 | } | |
720 | ||
721 | xfs_da_mount(mp); | |
722 | ||
5e656dbb BN |
723 | if (xfs_sb_version_hasattr2(&mp->m_sb)) |
724 | mp->m_flags |= LIBXFS_MOUNT_ATTR2; | |
57c9fccb | 725 | |
2bd0ea18 | 726 | /* Initialize the precomputed transaction reservations values */ |
5e656dbb | 727 | xfs_trans_init(mp); |
2bd0ea18 NS |
728 | |
729 | if (dev == 0) /* maxtrres, we have no device so leave now */ | |
730 | return mp; | |
731 | ||
d855bce8 | 732 | /* device size checks must pass unless we're a debugger. */ |
361379e0 | 733 | bp = libxfs_buf_read(mp->m_dev, d - XFS_FSS_TO_BB(mp, 1), |
d855bce8 | 734 | XFS_FSS_TO_BB(mp, 1), 0, NULL); |
9440d84d NS |
735 | if (!bp) { |
736 | fprintf(stderr, _("%s: data size check failed\n"), progname); | |
d855bce8 | 737 | if (!debugger) |
4ca431fc | 738 | return NULL; |
32244196 | 739 | } else |
e02ba985 | 740 | libxfs_buf_relse(bp); |
2bd0ea18 | 741 | |
75c8b434 DC |
742 | if (mp->m_logdev_targp->dev && |
743 | mp->m_logdev_targp->dev != mp->m_ddev_targp->dev) { | |
9440d84d | 744 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); |
2bd0ea18 | 745 | if ( (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) || |
361379e0 | 746 | (!(bp = libxfs_buf_read(mp->m_logdev_targp, |
9440d84d | 747 | d - XFS_FSB_TO_BB(mp, 1), |
d855bce8 | 748 | XFS_FSB_TO_BB(mp, 1), 0, NULL)))) { |
9440d84d | 749 | fprintf(stderr, _("%s: log size checks failed\n"), |
2bd0ea18 | 750 | progname); |
d855bce8 | 751 | if (!debugger) |
4ca431fc | 752 | return NULL; |
2bd0ea18 | 753 | } |
32244196 | 754 | if (bp) |
e02ba985 | 755 | libxfs_buf_relse(bp); |
2bd0ea18 NS |
756 | } |
757 | ||
758 | /* Initialize realtime fields in the mount structure */ | |
39798eb5 | 759 | if (rtmount_init(mp, flags)) { |
9440d84d NS |
760 | fprintf(stderr, _("%s: realtime device init failed\n"), |
761 | progname); | |
4ca431fc | 762 | return NULL; |
2bd0ea18 NS |
763 | } |
764 | ||
a547152d ES |
765 | /* |
766 | * libxfs_initialize_perag will allocate a perag structure for each ag. | |
767 | * If agcount is corrupted and insanely high, this will OOM the box. | |
768 | * If the agount seems (arbitrarily) high, try to read what would be | |
769 | * the last AG, and if that fails for a relatively high agcount, just | |
770 | * read the first one and let the user know to check the geometry. | |
771 | */ | |
772 | if (sbp->sb_agcount > 1000000) { | |
361379e0 | 773 | bp = libxfs_buf_read(mp->m_dev, |
a547152d | 774 | XFS_AG_DADDR(mp, sbp->sb_agcount - 1, 0), 1, |
d855bce8 | 775 | 0, NULL); |
a547152d ES |
776 | if (bp->b_error) { |
777 | fprintf(stderr, _("%s: read of AG %u failed\n"), | |
778 | progname, sbp->sb_agcount); | |
d855bce8 | 779 | if (!debugger) |
a547152d ES |
780 | return NULL; |
781 | fprintf(stderr, _("%s: limiting reads to AG 0\n"), | |
782 | progname); | |
783 | sbp->sb_agcount = 1; | |
784 | } | |
e02ba985 | 785 | libxfs_buf_relse(bp); |
a547152d ES |
786 | } |
787 | ||
56b2de80 DC |
788 | error = libxfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi); |
789 | if (error) { | |
790 | fprintf(stderr, _("%s: perag init failed\n"), | |
791 | progname); | |
2bd0ea18 NS |
792 | exit(1); |
793 | } | |
794 | ||
2bd0ea18 NS |
795 | return mp; |
796 | } | |
797 | ||
f1b058f9 NS |
798 | void |
799 | libxfs_rtmount_destroy(xfs_mount_t *mp) | |
800 | { | |
801 | if (mp->m_rsumip) | |
31845e4c | 802 | libxfs_irele(mp->m_rsumip); |
f1b058f9 | 803 | if (mp->m_rbmip) |
31845e4c | 804 | libxfs_irele(mp->m_rbmip); |
f1b058f9 NS |
805 | mp->m_rsumip = mp->m_rbmip = NULL; |
806 | } | |
807 | ||
c335b673 DW |
808 | /* Flush a device and report on writes that didn't make it to stable storage. */ |
809 | static inline int | |
810 | libxfs_flush_buftarg( | |
811 | struct xfs_buftarg *btp, | |
812 | const char *buftarg_descr) | |
813 | { | |
814 | int error = 0; | |
815 | int err2; | |
816 | ||
817 | /* | |
818 | * Write verifier failures are evidence of a buggy program. Make sure | |
819 | * that this state is always reported to the caller. | |
820 | */ | |
821 | if (btp->flags & XFS_BUFTARG_CORRUPT_WRITE) { | |
822 | fprintf(stderr, | |
823 | _("%s: Refusing to write a corrupt buffer to the %s!\n"), | |
824 | progname, buftarg_descr); | |
825 | error = -EFSCORRUPTED; | |
826 | } | |
827 | ||
828 | if (btp->flags & XFS_BUFTARG_LOST_WRITE) { | |
829 | fprintf(stderr, | |
830 | _("%s: Lost a write to the %s!\n"), | |
831 | progname, buftarg_descr); | |
832 | if (!error) | |
833 | error = -EIO; | |
834 | } | |
835 | ||
836 | err2 = libxfs_blkdev_issue_flush(btp); | |
837 | if (err2) { | |
838 | fprintf(stderr, | |
839 | _("%s: Flushing the %s failed, err=%d!\n"), | |
840 | progname, buftarg_descr, -err2); | |
841 | } | |
842 | if (!error) | |
843 | error = err2; | |
844 | ||
845 | return error; | |
846 | } | |
847 | ||
848 | /* | |
849 | * Flush all dirty buffers to stable storage and report on writes that didn't | |
850 | * make it to stable storage. | |
851 | */ | |
852 | static int | |
853 | libxfs_flush_mount( | |
854 | struct xfs_mount *mp) | |
855 | { | |
856 | int error = 0; | |
857 | int err2; | |
858 | ||
859 | /* | |
860 | * Purge the buffer cache to write all dirty buffers to disk and free | |
861 | * all incore buffers. Buffers that fail write verification will cause | |
862 | * the CORRUPT_WRITE flag to be set in the buftarg. Buffers that | |
863 | * cannot be written will cause the LOST_WRITE flag to be set in the | |
864 | * buftarg. | |
865 | */ | |
866 | libxfs_bcache_purge(); | |
867 | ||
868 | /* Flush all kernel and disk write caches, and report failures. */ | |
869 | if (mp->m_ddev_targp) { | |
870 | err2 = libxfs_flush_buftarg(mp->m_ddev_targp, _("data device")); | |
871 | if (!error) | |
872 | error = err2; | |
873 | } | |
874 | ||
875 | if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) { | |
876 | err2 = libxfs_flush_buftarg(mp->m_logdev_targp, | |
877 | _("log device")); | |
878 | if (!error) | |
879 | error = err2; | |
880 | } | |
881 | ||
882 | if (mp->m_rtdev_targp) { | |
883 | err2 = libxfs_flush_buftarg(mp->m_rtdev_targp, | |
884 | _("realtime device")); | |
885 | if (!error) | |
886 | error = err2; | |
887 | } | |
888 | ||
889 | return error; | |
890 | } | |
891 | ||
2bd0ea18 | 892 | /* |
9440d84d | 893 | * Release any resource obtained during a mount. |
2bd0ea18 | 894 | */ |
c335b673 DW |
895 | int |
896 | libxfs_umount( | |
897 | struct xfs_mount *mp) | |
2bd0ea18 | 898 | { |
56b2de80 DC |
899 | struct xfs_perag *pag; |
900 | int agno; | |
c335b673 | 901 | int error; |
56b2de80 | 902 | |
f1b058f9 | 903 | libxfs_rtmount_destroy(mp); |
c335b673 DW |
904 | |
905 | error = libxfs_flush_mount(mp); | |
f1b058f9 | 906 | |
56b2de80 DC |
907 | for (agno = 0; agno < mp->m_maxagi; agno++) { |
908 | pag = radix_tree_delete(&mp->m_perag_tree, agno); | |
909 | kmem_free(pag); | |
fceb0d99 | 910 | } |
4334e2e8 ES |
911 | |
912 | kmem_free(mp->m_attr_geo); | |
913 | kmem_free(mp->m_dir_geo); | |
914 | ||
915 | kmem_free(mp->m_rtdev_targp); | |
916 | if (mp->m_logdev_targp != mp->m_ddev_targp) | |
917 | kmem_free(mp->m_logdev_targp); | |
918 | kmem_free(mp->m_ddev_targp); | |
f8149110 | 919 | |
c335b673 | 920 | return error; |
2bd0ea18 | 921 | } |
f1b058f9 NS |
922 | |
923 | /* | |
924 | * Release any global resources used by libxfs. | |
925 | */ | |
926 | void | |
a9468486 DW |
927 | libxfs_destroy( |
928 | struct libxfs_xinit *li) | |
f1b058f9 | 929 | { |
a9468486 DW |
930 | int leaked; |
931 | ||
932 | libxfs_close_devices(li); | |
44488491 | 933 | |
864028ed ES |
934 | /* Free everything from the buffer cache before freeing buffer zone */ |
935 | libxfs_bcache_purge(); | |
936 | libxfs_bcache_free(); | |
f1b058f9 | 937 | cache_destroy(libxfs_bcache); |
7a326ce0 | 938 | leaked = destroy_zones(); |
44488491 ES |
939 | if (getenv("LIBXFS_LEAK_CHECK") && leaked) |
940 | exit(1); | |
f1b058f9 | 941 | } |
9f38f08d | 942 | |
b74a1f6a NS |
943 | int |
944 | libxfs_device_alignment(void) | |
945 | { | |
946 | return platform_align_blockdev(); | |
947 | } | |
948 | ||
9f38f08d | 949 | void |
b6281496 | 950 | libxfs_report(FILE *fp) |
9f38f08d | 951 | { |
cb5b3ef4 MV |
952 | time_t t; |
953 | char *c; | |
954 | ||
b6281496 | 955 | cache_report(fp, "libxfs_bcache", libxfs_bcache); |
cb5b3ef4 MV |
956 | |
957 | t = time(NULL); | |
958 | c = asctime(localtime(&t)); | |
959 | fprintf(fp, "%s", c); | |
960 | } |