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Commit | Line | Data |
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2bd0ea18 | 1 | /* |
da23017d NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
2bd0ea18 | 4 | * |
da23017d NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
2bd0ea18 NS |
7 | * published by the Free Software Foundation. |
8 | * | |
da23017d NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
2bd0ea18 | 13 | * |
da23017d NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
2bd0ea18 NS |
17 | */ |
18 | ||
1d7e80ee | 19 | #include <xfs/libxfs.h> |
2bd0ea18 | 20 | #include <sys/stat.h> |
9440d84d | 21 | #include "init.h" |
29e62271 | 22 | |
2bd0ea18 NS |
23 | #define findrawpath(x) x |
24 | #define findblockpath(x) x | |
25 | ||
26 | char *progname = "libxfs"; /* default, changed by each tool */ | |
27 | ||
28 | /* | |
29 | * dev_map - map open devices to fd. | |
30 | */ | |
31 | #define MAX_DEVS 10 /* arbitary maximum */ | |
32 | int nextfakedev = -1; /* device number to give to next fake device */ | |
33 | static struct dev_to_fd { | |
9440d84d NS |
34 | dev_t dev; |
35 | int fd; | |
2bd0ea18 NS |
36 | } dev_map[MAX_DEVS]={{0}}; |
37 | ||
2bd0ea18 NS |
38 | /* |
39 | * Checks whether a given device has a mounted, writable | |
40 | * filesystem, returns 1 if it does & fatal (just warns | |
41 | * if not fatal, but allows us to proceed). | |
5000d01d | 42 | * |
2bd0ea18 NS |
43 | * Useful to tools which will produce uncertain results |
44 | * if the filesystem is active - repair, check, logprint. | |
45 | */ | |
46 | static int | |
47 | check_isactive(char *name, char *block, int fatal) | |
48 | { | |
9440d84d | 49 | struct stat64 st; |
2bd0ea18 | 50 | |
fc8202ba | 51 | if (stat64(block, &st) < 0) |
9440d84d | 52 | return 0; |
fc8202ba | 53 | if ((st.st_mode & S_IFMT) != S_IFBLK) |
9440d84d | 54 | return 0; |
93d9f139 | 55 | if (platform_check_ismounted(name, block, &st, 0) == 0) |
9440d84d | 56 | return 0; |
93d9f139 | 57 | return platform_check_iswritable(name, block, &st, fatal); |
2bd0ea18 NS |
58 | } |
59 | ||
5000d01d | 60 | /* libxfs_device_to_fd: |
2bd0ea18 NS |
61 | * lookup a device number in the device map |
62 | * return the associated fd | |
63 | */ | |
64 | int | |
65 | libxfs_device_to_fd(dev_t device) | |
66 | { | |
9440d84d | 67 | int d; |
5000d01d | 68 | |
9440d84d | 69 | for (d = 0; d < MAX_DEVS; d++) |
5000d01d | 70 | if (dev_map[d].dev == device) |
2bd0ea18 | 71 | return dev_map[d].fd; |
5000d01d | 72 | |
9440d84d NS |
73 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
74 | progname, __FUNCTION__, (long long)device); | |
2bd0ea18 NS |
75 | exit(1); |
76 | } | |
77 | ||
78 | /* libxfs_device_open: | |
79 | * open a device and return its device number | |
80 | */ | |
81 | dev_t | |
7eb6693f | 82 | libxfs_device_open(char *path, int creat, int xflags, int setblksize) |
2bd0ea18 | 83 | { |
2bd0ea18 | 84 | dev_t dev; |
7eb6693f NS |
85 | int fd, d, flags; |
86 | int readonly, excl; | |
87 | struct stat64 statb; | |
88 | ||
89 | readonly = (xflags & LIBXFS_ISREADONLY); | |
90 | excl = (xflags & LIBXFS_EXCLUSIVELY) && !creat; | |
2bd0ea18 | 91 | |
7eb6693f NS |
92 | flags = (readonly ? O_RDONLY : O_RDWR) | \ |
93 | (creat ? (O_CREAT|O_TRUNC) : 0) | \ | |
94 | (excl ? O_EXCL : 0); | |
95 | if ((fd = open(path, flags, 0666)) < 0) { | |
9440d84d | 96 | fprintf(stderr, _("%s: cannot open %s: %s\n"), |
2bd0ea18 NS |
97 | progname, path, strerror(errno)); |
98 | exit(1); | |
99 | } | |
100 | ||
7eb6693f | 101 | if (fstat64(fd, &statb) < 0) { |
9440d84d | 102 | fprintf(stderr, _("%s: cannot stat %s: %s\n"), |
2bd0ea18 NS |
103 | progname, path, strerror(errno)); |
104 | exit(1); | |
105 | } | |
a33a9e62 | 106 | |
c5907b96 | 107 | if (!readonly && setblksize && (statb.st_mode & S_IFMT) == S_IFBLK) { |
93d9f139 | 108 | platform_set_blocksize(fd, path, 512); |
2bd0ea18 NS |
109 | } |
110 | ||
a33a9e62 NS |
111 | /* |
112 | * Get the device number from the stat buf - unless | |
2bd0ea18 | 113 | * we're not opening a real device, in which case |
a33a9e62 | 114 | * choose a new fake device number. |
2bd0ea18 | 115 | */ |
32181a02 | 116 | dev = (statb.st_rdev) ? (statb.st_rdev) : (nextfakedev--); |
2bd0ea18 | 117 | |
32181a02 | 118 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 119 | if (dev_map[d].dev == dev) { |
9440d84d | 120 | fprintf(stderr, _("%s: device %lld is already open\n"), |
5b64e00a | 121 | progname, (long long)dev); |
2bd0ea18 NS |
122 | exit(1); |
123 | } | |
124 | ||
32181a02 | 125 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 126 | if (!dev_map[d].dev) { |
32181a02 NS |
127 | dev_map[d].dev = dev; |
128 | dev_map[d].fd = fd; | |
5000d01d | 129 | |
2bd0ea18 NS |
130 | return dev; |
131 | } | |
132 | ||
9440d84d NS |
133 | fprintf(stderr, _("%s: %s: too many open devices\n"), |
134 | progname, __FUNCTION__); | |
2bd0ea18 NS |
135 | exit(1); |
136 | } | |
137 | ||
138 | void | |
139 | libxfs_device_close(dev_t dev) | |
140 | { | |
5000d01d | 141 | int d; |
2bd0ea18 | 142 | |
32181a02 | 143 | for (d = 0; d < MAX_DEVS; d++) |
2bd0ea18 | 144 | if (dev_map[d].dev == dev) { |
32181a02 | 145 | int fd; |
5000d01d | 146 | |
32181a02 NS |
147 | fd = dev_map[d].fd; |
148 | dev_map[d].dev = dev_map[d].fd = 0; | |
5000d01d | 149 | |
2bd0ea18 | 150 | fsync(fd); |
ac419944 | 151 | platform_flush_device(fd, dev); |
2bd0ea18 | 152 | close(fd); |
5000d01d | 153 | |
2bd0ea18 NS |
154 | return; |
155 | } | |
156 | ||
9440d84d NS |
157 | fprintf(stderr, _("%s: %s: device %lld is not open\n"), |
158 | progname, __FUNCTION__, (long long)dev); | |
2bd0ea18 NS |
159 | exit(1); |
160 | } | |
161 | ||
74668075 NS |
162 | static int |
163 | check_open(char *path, int flags, char **rawfile, char **blockfile) | |
164 | { | |
c781939c RC |
165 | int readonly = (flags & LIBXFS_ISREADONLY); |
166 | int inactive = (flags & LIBXFS_ISINACTIVE); | |
167 | int dangerously = (flags & LIBXFS_DANGEROUSLY); | |
168 | struct stat64 stbuf; | |
169 | ||
170 | if (stat64(path, &stbuf) < 0) { | |
171 | perror(path); | |
172 | return 0; | |
173 | } | |
174 | if (!(*rawfile = findrawpath(path))) { | |
175 | fprintf(stderr, _("%s: " | |
176 | "can't find a character device matching %s\n"), | |
177 | progname, path); | |
178 | return 0; | |
179 | } | |
180 | if (!(*blockfile = findblockpath(path))) { | |
181 | fprintf(stderr, _("%s: " | |
182 | "can't find a block device matching %s\n"), | |
183 | progname, path); | |
184 | return 0; | |
185 | } | |
186 | if (!readonly && !inactive && platform_check_ismounted(path, *blockfile, NULL, 1)) | |
187 | return 0; | |
188 | ||
189 | if (inactive && check_isactive(path, *blockfile, ((readonly|dangerously)?1:0))) | |
190 | return 0; | |
191 | ||
192 | return 1; | |
193 | } | |
194 | ||
2bd0ea18 NS |
195 | /* |
196 | * libxfs initialization. | |
197 | * Caller gets a 0 on failure (and we print a message), 1 on success. | |
198 | */ | |
199 | int | |
200 | libxfs_init(libxfs_init_t *a) | |
201 | { | |
202 | char *blockfile; | |
203 | char curdir[MAXPATHLEN]; | |
204 | char *dname; | |
205 | char dpath[25]; | |
206 | int fd; | |
207 | char *logname; | |
208 | char logpath[25]; | |
209 | int needcd; | |
210 | char *rawfile; | |
211 | char *rtname; | |
212 | char rtpath[25]; | |
213 | int rval = 0; | |
c781939c | 214 | int flags; |
2bd0ea18 NS |
215 | |
216 | dpath[0] = logpath[0] = rtpath[0] = '\0'; | |
217 | dname = a->dname; | |
218 | logname = a->logname; | |
219 | rtname = a->rtname; | |
2bd0ea18 | 220 | a->dfd = a->logfd = a->rtfd = -1; |
74668075 NS |
221 | a->ddev = a->logdev = a->rtdev = 0; |
222 | a->dbsize = a->lbsize = a->rtbsize = 0; | |
2bd0ea18 NS |
223 | a->dsize = a->logBBsize = a->logBBstart = a->rtsize = 0; |
224 | ||
225 | (void)getcwd(curdir,MAXPATHLEN); | |
226 | needcd = 0; | |
227 | fd = -1; | |
c781939c RC |
228 | flags = a->isreadonly; |
229 | ||
2bd0ea18 | 230 | if (a->volname) { |
c781939c | 231 | if(!check_open(a->volname,flags,&rawfile,&blockfile)) |
2bd0ea18 NS |
232 | goto done; |
233 | needcd = 1; | |
234 | fd = open(rawfile, O_RDONLY); | |
235 | #ifdef HAVE_VOLUME_MANAGER | |
236 | xlv_getdev_t getdev; | |
237 | if (ioctl(fd, DIOCGETVOLDEV, &getdev) < 0) | |
238 | #else | |
239 | if (1) | |
240 | #endif | |
241 | { | |
242 | if (a->notvolok) { | |
243 | dname = a->dname = a->volname; | |
244 | a->volname = NULL; | |
245 | goto voldone; | |
246 | } | |
9440d84d NS |
247 | fprintf(stderr, _("%s: " |
248 | "%s is not a volume device name\n"), | |
2bd0ea18 NS |
249 | progname, a->volname); |
250 | if (a->notvolmsg) | |
251 | fprintf(stderr, a->notvolmsg, a->volname); | |
252 | goto done; | |
253 | } | |
254 | #ifdef HAVE_VOLUME_MANAGER | |
255 | if (getdev.data_subvol_dev && dname) { | |
9440d84d NS |
256 | fprintf(stderr, _("%s: " |
257 | "%s has a data subvolume, cannot specify %s\n"), | |
2bd0ea18 NS |
258 | progname, a->volname, dname); |
259 | goto done; | |
260 | } | |
261 | if (getdev.log_subvol_dev && logname) { | |
9440d84d NS |
262 | fprintf(stderr, _("%s: " |
263 | "%s has a log subvolume, cannot specify %s\n"), | |
2bd0ea18 NS |
264 | progname, a->volname, logname); |
265 | goto done; | |
266 | } | |
267 | if (getdev.rt_subvol_dev && rtname) { | |
9440d84d NS |
268 | fprintf(stderr, _("%s: %s has a realtime subvolume, " |
269 | "cannot specify %s\n"), | |
2bd0ea18 NS |
270 | progname, a->volname, rtname); |
271 | goto done; | |
272 | } | |
273 | if (!dname && getdev.data_subvol_dev) { | |
274 | strcpy(dpath, "/tmp/libxfsdXXXXXX"); | |
275 | (void)mktemp(dpath); | |
276 | if (mknod(dpath, S_IFCHR | 0600, | |
277 | getdev.data_subvol_dev) < 0) { | |
9440d84d | 278 | fprintf(stderr, _("%s: mknod failed: %s\n"), |
2bd0ea18 NS |
279 | progname, strerror(errno)); |
280 | goto done; | |
281 | } | |
282 | dname = dpath; | |
283 | } | |
284 | if (!logname && getdev.log_subvol_dev) { | |
285 | strcpy(logpath, "/tmp/libxfslXXXXXX"); | |
286 | (void)mktemp(logpath); | |
287 | if (mknod(logpath, S_IFCHR | 0600, | |
288 | getdev.log_subvol_dev) < 0) { | |
9440d84d | 289 | fprintf(stderr, _("%s: mknod failed: %s\n"), |
2bd0ea18 NS |
290 | progname, strerror(errno)); |
291 | goto done; | |
292 | } | |
293 | logname = logpath; | |
294 | } | |
295 | if (!rtname && getdev.rt_subvol_dev) { | |
296 | strcpy(rtpath, "/tmp/libxfsrXXXXXX"); | |
297 | (void)mktemp(rtpath); | |
298 | if (mknod(rtpath, S_IFCHR | 0600, | |
299 | getdev.rt_subvol_dev) < 0) { | |
9440d84d | 300 | fprintf(stderr, _("%s: mknod failed: %s\n"), |
2bd0ea18 NS |
301 | progname, strerror(errno)); |
302 | goto done; | |
303 | } | |
304 | rtname = rtpath; | |
305 | } | |
306 | #endif | |
307 | } | |
308 | voldone: | |
309 | if (dname) { | |
310 | if (dname[0] != '/' && needcd) | |
311 | chdir(curdir); | |
312 | if (a->disfile) { | |
7eb6693f | 313 | a->ddev= libxfs_device_open(dname, a->dcreat, flags, |
c5907b96 | 314 | a->setblksize); |
2bd0ea18 NS |
315 | a->dfd = libxfs_device_to_fd(a->ddev); |
316 | } else { | |
f02037ce | 317 | if (!check_open(dname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
318 | goto done; |
319 | a->ddev = libxfs_device_open(rawfile, | |
7eb6693f | 320 | a->dcreat, flags, a->setblksize); |
2bd0ea18 | 321 | a->dfd = libxfs_device_to_fd(a->ddev); |
f02037ce NS |
322 | platform_findsizes(rawfile, a->dfd, |
323 | &a->dsize, &a->dbsize); | |
2bd0ea18 NS |
324 | } |
325 | needcd = 1; | |
326 | } else | |
327 | a->dsize = 0; | |
328 | if (logname) { | |
329 | if (logname[0] != '/' && needcd) | |
330 | chdir(curdir); | |
331 | if (a->lisfile) { | |
332 | a->logdev = libxfs_device_open(logname, | |
7eb6693f | 333 | a->lcreat, flags, a->setblksize); |
2bd0ea18 NS |
334 | a->logfd = libxfs_device_to_fd(a->logdev); |
335 | } else { | |
f02037ce | 336 | if (!check_open(logname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
337 | goto done; |
338 | a->logdev = libxfs_device_open(rawfile, | |
7eb6693f | 339 | a->lcreat, flags, a->setblksize); |
2bd0ea18 | 340 | a->logfd = libxfs_device_to_fd(a->logdev); |
f02037ce NS |
341 | platform_findsizes(rawfile, a->logfd, |
342 | &a->logBBsize, &a->lbsize); | |
2bd0ea18 NS |
343 | } |
344 | needcd = 1; | |
345 | } else | |
346 | a->logBBsize = 0; | |
347 | if (rtname) { | |
348 | if (rtname[0] != '/' && needcd) | |
349 | chdir(curdir); | |
350 | if (a->risfile) { | |
351 | a->rtdev = libxfs_device_open(rtname, | |
7eb6693f | 352 | a->rcreat, flags, a->setblksize); |
2bd0ea18 NS |
353 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
354 | } else { | |
f02037ce | 355 | if (!check_open(rtname, flags, &rawfile, &blockfile)) |
2bd0ea18 NS |
356 | goto done; |
357 | a->rtdev = libxfs_device_open(rawfile, | |
7eb6693f | 358 | a->rcreat, flags, a->setblksize); |
2bd0ea18 | 359 | a->rtfd = libxfs_device_to_fd(a->rtdev); |
f02037ce NS |
360 | platform_findsizes(rawfile, a->rtfd, |
361 | &a->rtsize, &a->rtbsize); | |
2bd0ea18 NS |
362 | } |
363 | needcd = 1; | |
364 | } else | |
365 | a->rtsize = 0; | |
366 | if (a->dsize < 0) { | |
9440d84d | 367 | fprintf(stderr, _("%s: can't get size for data subvolume\n"), |
2bd0ea18 NS |
368 | progname); |
369 | goto done; | |
370 | } | |
371 | if (a->logBBsize < 0) { | |
9440d84d | 372 | fprintf(stderr, _("%s: can't get size for log subvolume\n"), |
2bd0ea18 NS |
373 | progname); |
374 | goto done; | |
375 | } | |
376 | if (a->rtsize < 0) { | |
9440d84d | 377 | fprintf(stderr, _("%s: can't get size for realtime subvolume\n"), |
2bd0ea18 NS |
378 | progname); |
379 | goto done; | |
380 | } | |
381 | if (needcd) | |
382 | chdir(curdir); | |
383 | rval = 1; | |
384 | done: | |
385 | if (dpath[0]) | |
386 | unlink(dpath); | |
387 | if (logpath[0]) | |
388 | unlink(logpath); | |
389 | if (rtpath[0]) | |
390 | unlink(rtpath); | |
391 | if (fd >= 0) | |
392 | close(fd); | |
393 | if (!rval && a->ddev) | |
394 | libxfs_device_close(a->ddev); | |
395 | if (!rval && a->logdev) | |
396 | libxfs_device_close(a->logdev); | |
397 | if (!rval && a->rtdev) | |
398 | libxfs_device_close(a->rtdev); | |
399 | return rval; | |
400 | } | |
401 | ||
402 | ||
403 | /* | |
404 | * Initialize/destroy all of the zone allocators we use. | |
405 | */ | |
406 | static void | |
407 | manage_zones(int release) | |
408 | { | |
409 | extern xfs_zone_t *xfs_ili_zone; | |
410 | extern xfs_zone_t *xfs_inode_zone; | |
411 | extern xfs_zone_t *xfs_ifork_zone; | |
412 | extern xfs_zone_t *xfs_dabuf_zone; | |
413 | extern xfs_zone_t *xfs_buf_item_zone; | |
414 | extern xfs_zone_t *xfs_da_state_zone; | |
415 | extern xfs_zone_t *xfs_btree_cur_zone; | |
416 | extern xfs_zone_t *xfs_bmap_free_item_zone; | |
417 | extern void xfs_dir_startup(); | |
418 | ||
419 | if (release) { /* free zone allocation */ | |
420 | libxfs_free(xfs_inode_zone); | |
421 | libxfs_free(xfs_ifork_zone); | |
422 | libxfs_free(xfs_dabuf_zone); | |
423 | libxfs_free(xfs_buf_item_zone); | |
424 | libxfs_free(xfs_da_state_zone); | |
425 | libxfs_free(xfs_btree_cur_zone); | |
426 | libxfs_free(xfs_bmap_free_item_zone); | |
427 | return; | |
428 | } | |
429 | /* otherwise initialise zone allocation */ | |
430 | xfs_inode_zone = libxfs_zone_init(sizeof(xfs_inode_t), "xfs_inode"); | |
431 | xfs_ifork_zone = libxfs_zone_init(sizeof(xfs_ifork_t), "xfs_ifork"); | |
432 | xfs_dabuf_zone = libxfs_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
433 | xfs_ili_zone = libxfs_zone_init( | |
434 | sizeof(xfs_inode_log_item_t), "xfs_inode_log_item"); | |
435 | xfs_buf_item_zone = libxfs_zone_init( | |
436 | sizeof(xfs_buf_log_item_t), "xfs_buf_log_item"); | |
437 | xfs_da_state_zone = libxfs_zone_init( | |
438 | sizeof(xfs_da_state_t), "xfs_da_state"); | |
439 | xfs_btree_cur_zone = libxfs_zone_init( | |
440 | sizeof(xfs_btree_cur_t), "xfs_btree_cur"); | |
441 | xfs_bmap_free_item_zone = libxfs_zone_init( | |
442 | sizeof(xfs_bmap_free_item_t), "xfs_bmap_free_item"); | |
443 | xfs_dir_startup(); | |
444 | } | |
445 | ||
446 | /* | |
447 | * Get the bitmap and summary inodes into the mount structure | |
448 | * at mount time. | |
449 | */ | |
450 | static int | |
451 | rtmount_inodes(xfs_mount_t *mp) | |
452 | { | |
453 | int error; | |
454 | xfs_sb_t *sbp; | |
455 | ||
456 | sbp = &mp->m_sb; | |
457 | if (sbp->sb_rbmino == NULLFSINO) | |
458 | return 0; | |
459 | error = libxfs_iread(mp, NULL, sbp->sb_rbmino, &mp->m_rbmip, 0); | |
460 | if (error) { | |
9440d84d NS |
461 | fprintf(stderr, |
462 | _("%s: cannot read realtime bitmap inode (%d)\n"), | |
2bd0ea18 NS |
463 | progname, error); |
464 | return error; | |
465 | } | |
466 | ASSERT(mp->m_rbmip != NULL); | |
467 | ASSERT(sbp->sb_rsumino != NULLFSINO); | |
468 | error = libxfs_iread(mp, NULL, sbp->sb_rsumino, &mp->m_rsumip, 0); | |
469 | if (error) { | |
9440d84d NS |
470 | fprintf(stderr, |
471 | _("%s: cannot read realtime summary inode (%d)\n"), | |
2bd0ea18 NS |
472 | progname, error); |
473 | return error; | |
474 | } | |
475 | ASSERT(mp->m_rsumip != NULL); | |
476 | return 0; | |
477 | } | |
478 | ||
b391b7cd NS |
479 | /* |
480 | * Initialize realtime fields in the mount structure. | |
481 | */ | |
482 | static int | |
483 | rtmount_init( | |
39798eb5 NS |
484 | xfs_mount_t *mp, /* file system mount structure */ |
485 | int flags) | |
b391b7cd NS |
486 | { |
487 | xfs_buf_t *bp; /* buffer for last block of subvolume */ | |
488 | xfs_daddr_t d; /* address of last block of subvolume */ | |
489 | xfs_sb_t *sbp; /* filesystem superblock copy in mount */ | |
490 | ||
491 | sbp = &mp->m_sb; | |
492 | if (sbp->sb_rblocks == 0) | |
493 | return 0; | |
39798eb5 | 494 | if (mp->m_rtdev == 0 && !(flags & LIBXFS_MOUNT_DEBUGGER)) { |
9440d84d | 495 | fprintf(stderr, _("%s: filesystem has a realtime subvolume\n"), |
b391b7cd NS |
496 | progname); |
497 | return -1; | |
498 | } | |
499 | mp->m_rsumlevels = sbp->sb_rextslog + 1; | |
500 | mp->m_rsumsize = | |
501 | (uint)sizeof(xfs_suminfo_t) * mp->m_rsumlevels * | |
502 | sbp->sb_rbmblocks; | |
503 | mp->m_rsumsize = roundup(mp->m_rsumsize, sbp->sb_blocksize); | |
504 | mp->m_rbmip = mp->m_rsumip = NULL; | |
39798eb5 NS |
505 | |
506 | /* | |
507 | * Allow debugger to be run without the realtime device present. | |
508 | */ | |
509 | if (flags & LIBXFS_MOUNT_DEBUGGER) | |
510 | return 0; | |
511 | ||
b391b7cd NS |
512 | /* |
513 | * Check that the realtime section is an ok size. | |
514 | */ | |
515 | d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_rblocks); | |
516 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_rblocks) { | |
9440d84d NS |
517 | fprintf(stderr, _("%s: realtime init - %llu != %llu\n"), |
518 | progname, (unsigned long long) XFS_BB_TO_FSB(mp, d), | |
b391b7cd NS |
519 | (unsigned long long) mp->m_sb.sb_rblocks); |
520 | return -1; | |
521 | } | |
9440d84d NS |
522 | bp = libxfs_readbuf(mp->m_rtdev, |
523 | d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), 0); | |
b391b7cd | 524 | if (bp == NULL) { |
9440d84d NS |
525 | fprintf(stderr, _("%s: realtime size check failed\n"), |
526 | progname); | |
b391b7cd NS |
527 | return -1; |
528 | } | |
529 | libxfs_putbuf(bp); | |
530 | return 0; | |
531 | } | |
532 | ||
2bd0ea18 NS |
533 | /* |
534 | * Mount structure initialization, provides a filled-in xfs_mount_t | |
535 | * such that the numerous XFS_* macros can be used. If dev is zero, | |
536 | * no IO will be performed (no size checks, read root inodes). | |
537 | */ | |
538 | xfs_mount_t * | |
539 | libxfs_mount( | |
540 | xfs_mount_t *mp, | |
541 | xfs_sb_t *sb, | |
542 | dev_t dev, | |
543 | dev_t logdev, | |
544 | dev_t rtdev, | |
4ca431fc | 545 | int flags) |
2bd0ea18 NS |
546 | { |
547 | xfs_daddr_t d; | |
548 | xfs_buf_t *bp; | |
549 | xfs_sb_t *sbp; | |
550 | size_t size; | |
551 | int error; | |
552 | ||
553 | mp->m_dev = dev; | |
554 | mp->m_rtdev = rtdev; | |
555 | mp->m_logdev = logdev; | |
6239071d | 556 | mp->m_flags = (LIBXFS_MOUNT_32BITINODES|LIBXFS_MOUNT_32BITINOOPT); |
2bd0ea18 NS |
557 | mp->m_sb = *sb; |
558 | sbp = &(mp->m_sb); | |
559 | manage_zones(0); | |
560 | ||
561 | libxfs_mount_common(mp, sb); | |
562 | ||
563 | libxfs_alloc_compute_maxlevels(mp); | |
564 | libxfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK); | |
565 | libxfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK); | |
566 | libxfs_ialloc_compute_maxlevels(mp); | |
567 | ||
568 | if (sbp->sb_imax_pct) { | |
569 | /* Make sure the maximum inode count is a multiple of the | |
570 | * units we allocate inodes in. | |
571 | */ | |
572 | mp->m_maxicount = (sbp->sb_dblocks * sbp->sb_imax_pct) / 100; | |
573 | mp->m_maxicount = ((mp->m_maxicount / mp->m_ialloc_blks) * | |
574 | mp->m_ialloc_blks) << sbp->sb_inopblog; | |
575 | } else | |
576 | mp->m_maxicount = 0; | |
577 | ||
578 | mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE; | |
579 | ||
949c0f10 NS |
580 | /* |
581 | * Set whether we're using stripe alignment. | |
582 | */ | |
583 | if (XFS_SB_VERSION_HASDALIGN(&mp->m_sb)) { | |
584 | mp->m_dalign = sbp->sb_unit; | |
585 | mp->m_swidth = sbp->sb_width; | |
586 | } | |
587 | ||
2bd0ea18 NS |
588 | /* |
589 | * Set whether we're using inode alignment. | |
590 | */ | |
591 | if (XFS_SB_VERSION_HASALIGN(&mp->m_sb) && | |
592 | mp->m_sb.sb_inoalignmt >= | |
593 | XFS_B_TO_FSBT(mp, mp->m_inode_cluster_size)) | |
594 | mp->m_inoalign_mask = mp->m_sb.sb_inoalignmt - 1; | |
595 | else | |
596 | mp->m_inoalign_mask = 0; | |
597 | /* | |
598 | * If we are using stripe alignment, check whether | |
599 | * the stripe unit is a multiple of the inode alignment | |
600 | */ | |
601 | if ( mp->m_dalign | |
602 | && mp->m_inoalign_mask && !(mp->m_dalign & mp->m_inoalign_mask)) | |
603 | mp->m_sinoalign = mp->m_dalign; | |
604 | else | |
605 | mp->m_sinoalign = 0; | |
606 | ||
607 | /* | |
608 | * Check that the data (and log if separate) are an ok size. | |
609 | */ | |
9440d84d | 610 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks); |
2bd0ea18 | 611 | if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) { |
9440d84d | 612 | fprintf(stderr, _("%s: size check failed\n"), progname); |
4ca431fc NS |
613 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
614 | return NULL; | |
2bd0ea18 NS |
615 | } |
616 | ||
617 | /* Initialize the appropriate directory manager */ | |
618 | if (XFS_SB_VERSION_HASDIRV2(sbp)) | |
619 | libxfs_dir2_mount(mp); | |
620 | else | |
621 | libxfs_dir_mount(mp); | |
622 | ||
57c9fccb NS |
623 | /* Initialize cached values for the attribute manager */ |
624 | mp->m_attr_magicpct = (mp->m_sb.sb_blocksize * 37) / 100; | |
625 | ||
2bd0ea18 NS |
626 | /* Initialize the precomputed transaction reservations values */ |
627 | libxfs_trans_init(mp); | |
628 | ||
629 | if (dev == 0) /* maxtrres, we have no device so leave now */ | |
630 | return mp; | |
631 | ||
9440d84d | 632 | bp = libxfs_readbuf(mp->m_dev, |
4ca431fc NS |
633 | d - XFS_FSS_TO_BB(mp, 1), XFS_FSS_TO_BB(mp, 1), |
634 | !(flags & LIBXFS_MOUNT_DEBUGGER)); | |
9440d84d NS |
635 | if (!bp) { |
636 | fprintf(stderr, _("%s: data size check failed\n"), progname); | |
4ca431fc NS |
637 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
638 | return NULL; | |
2bd0ea18 NS |
639 | } |
640 | libxfs_putbuf(bp); | |
641 | ||
642 | if (mp->m_logdev && mp->m_logdev != mp->m_dev) { | |
9440d84d | 643 | d = (xfs_daddr_t) XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks); |
2bd0ea18 | 644 | if ( (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) || |
9440d84d NS |
645 | (!(bp = libxfs_readbuf(mp->m_logdev, |
646 | d - XFS_FSB_TO_BB(mp, 1), | |
4ca431fc NS |
647 | XFS_FSB_TO_BB(mp, 1), |
648 | !(flags & LIBXFS_MOUNT_DEBUGGER)))) ) { | |
9440d84d | 649 | fprintf(stderr, _("%s: log size checks failed\n"), |
2bd0ea18 | 650 | progname); |
4ca431fc NS |
651 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
652 | return NULL; | |
2bd0ea18 NS |
653 | } |
654 | libxfs_putbuf(bp); | |
655 | } | |
656 | ||
657 | /* Initialize realtime fields in the mount structure */ | |
39798eb5 | 658 | if (rtmount_init(mp, flags)) { |
9440d84d NS |
659 | fprintf(stderr, _("%s: realtime device init failed\n"), |
660 | progname); | |
4ca431fc | 661 | return NULL; |
2bd0ea18 NS |
662 | } |
663 | ||
664 | /* Allocate and initialize the per-ag data */ | |
665 | size = sbp->sb_agcount * sizeof(xfs_perag_t); | |
8ebd0722 | 666 | if (size && (mp->m_perag = calloc(size, 1)) == NULL) { |
9440d84d | 667 | fprintf(stderr, _("%s: failed to alloc %ld bytes: %s\n"), |
5b64e00a | 668 | progname, (long)size, strerror(errno)); |
2bd0ea18 NS |
669 | exit(1); |
670 | } | |
671 | ||
062998e3 | 672 | mp->m_maxagi = libxfs_initialize_perag(mp, sbp->sb_agcount); |
a33a9e62 | 673 | |
2bd0ea18 NS |
674 | /* |
675 | * mkfs calls mount before the root inode is allocated. | |
676 | */ | |
4ca431fc | 677 | if ((flags & LIBXFS_MOUNT_ROOTINOS) && sbp->sb_rootino != NULLFSINO) { |
2bd0ea18 NS |
678 | error = libxfs_iread(mp, NULL, sbp->sb_rootino, |
679 | &mp->m_rootip, 0); | |
680 | if (error) { | |
9440d84d | 681 | fprintf(stderr, _("%s: cannot read root inode (%d)\n"), |
2bd0ea18 | 682 | progname, error); |
4ca431fc NS |
683 | if (!(flags & LIBXFS_MOUNT_DEBUGGER)) |
684 | return NULL; | |
2bd0ea18 NS |
685 | } |
686 | ASSERT(mp->m_rootip != NULL); | |
687 | } | |
39798eb5 | 688 | if ((flags & LIBXFS_MOUNT_ROOTINOS) && rtmount_inodes(mp)) |
74668075 | 689 | return NULL; |
2bd0ea18 NS |
690 | return mp; |
691 | } | |
692 | ||
693 | /* | |
9440d84d | 694 | * Release any resource obtained during a mount. |
2bd0ea18 NS |
695 | */ |
696 | void | |
697 | libxfs_umount(xfs_mount_t *mp) | |
698 | { | |
699 | manage_zones(1); | |
fceb0d99 ES |
700 | if (mp->m_perag) { |
701 | int agno; | |
702 | for (agno = 0; agno < mp->m_maxagi; agno++) { | |
703 | if (mp->m_perag[agno].pagb_list) | |
704 | free(mp->m_perag[agno].pagb_list); | |
705 | } | |
706 | free(mp->m_perag); | |
707 | } | |
2bd0ea18 | 708 | } |