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6404bb81 NS |
1 | /* |
2 | * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
6404bb81 NS |
33 | #include <xfs/libxfs.h> |
34 | #include <sys/stat.h> | |
6404bb81 NS |
35 | #include <sys/wait.h> |
36 | #include <pthread.h> | |
37 | #include <signal.h> | |
38 | #include <stdarg.h> | |
39 | #include "xfs_copy.h" | |
40 | ||
41 | #define rounddown(x, y) (((x)/(y))*(y)) | |
42 | ||
7066fb24 NS |
43 | extern int platform_check_ismounted(char *, char *, struct stat64 *, int); |
44 | ||
6404bb81 NS |
45 | int logfd; |
46 | char *logfile_name; | |
47 | FILE *logerr; | |
48 | char LOGFILE_NAME[] = "/var/tmp/xfs_copy.log.XXXXXX"; | |
49 | ||
50 | char *source_name; | |
51 | int source_fd; | |
52 | ||
53 | unsigned int source_blocksize; /* source filesystem blocksize */ | |
54 | unsigned int source_sectorsize; /* source disk sectorsize */ | |
55 | ||
56 | xfs_agblock_t first_agbno; | |
57 | ||
989b74bc NS |
58 | __uint64_t barcount[11]; |
59 | ||
6404bb81 NS |
60 | unsigned int num_targets; |
61 | target_control *target; | |
62 | ||
63 | wbuf w_buf; | |
64 | wbuf btree_buf; | |
65 | ||
66 | pid_t parent_pid; | |
67 | unsigned int kids; | |
68 | ||
69 | thread_control glob_masks; | |
70 | thread_args *targ; | |
71 | ||
72 | pthread_mutex_t mainwait; | |
73 | ||
74 | #define ACTIVE 1 | |
75 | #define INACTIVE 2 | |
76 | ||
989b74bc NS |
77 | xfs_off_t write_log_trailer(int fd, wbuf *w, xfs_mount_t *mp); |
78 | xfs_off_t write_log_header(int fd, wbuf *w, xfs_mount_t *mp); | |
6404bb81 NS |
79 | |
80 | /* general purpose message reporting routine */ | |
81 | ||
82 | #define OUT 0x01 /* use stdout stream */ | |
83 | #define ERR 0x02 /* use stderr stream */ | |
84 | #define LOG 0x04 /* use logerr stream */ | |
85 | #define PRE 0x08 /* append strerror string */ | |
86 | #define LAST 0x10 /* final message we print */ | |
87 | ||
88 | void | |
89 | do_message(int flags, int code, const char *fmt, ...) | |
90 | { | |
91 | va_list ap; | |
92 | int eek = 0; | |
93 | ||
94 | va_start(ap, fmt); | |
95 | if (flags & LOG) | |
96 | if (vfprintf(logerr, fmt, ap) <= 0) | |
97 | eek = 1; | |
98 | if (eek) | |
99 | flags |= ERR; /* failed, force stderr */ | |
100 | if (flags & ERR) | |
101 | vfprintf(stderr, fmt, ap); | |
102 | else if (flags & OUT) | |
103 | vfprintf(stdout, fmt, ap); | |
104 | va_end(ap); | |
105 | ||
106 | if (flags & PRE) { | |
107 | do_message(flags & ~PRE, 0, ": %s\n", strerror(code)); | |
108 | if (flags & LAST) | |
109 | fprintf(stderr, | |
110 | _("Check logfile \"%s\" for more details\n"), | |
111 | logfile_name); | |
112 | } | |
113 | ||
114 | /* logfile is broken, force a write to stderr */ | |
115 | if (eek) { | |
116 | fprintf(stderr, _("%s: could not write to logfile \"%s\".\n"), | |
117 | progname, logfile_name); | |
118 | fprintf(stderr, | |
119 | _("Aborting XFS copy -- logfile error -- reason: %s\n"), | |
120 | strerror(errno)); | |
121 | pthread_exit(NULL); | |
122 | } | |
123 | } | |
124 | ||
125 | #define do_out(args...) do_message(OUT|LOG, 0, ## args) | |
126 | #define do_log(args...) do_message(ERR|LOG, 0, ## args) | |
127 | #define do_warn(args...) do_message(LOG, 0, ## args) | |
128 | #define do_error(e,s) do_message(ERR|LOG|PRE, e, s) | |
129 | #define do_fatal(e,s) do_message(ERR|LOG|PRE|LAST, e, s) | |
130 | #define do_vfatal(e,s,args...) do_message(ERR|LOG|PRE|LAST, e, s, ## args) | |
a92e6823 | 131 | #define die_perror() \ |
989b74bc NS |
132 | do { \ |
133 | do_message(ERR|LOG|PRE|LAST, errno, \ | |
134 | _("Aborting XFS copy - reason")); \ | |
135 | exit(1); \ | |
136 | } while (0) | |
6404bb81 NS |
137 | |
138 | void | |
139 | check_errors(void) | |
140 | { | |
989b74bc | 141 | int i, first_error = 0; |
6404bb81 NS |
142 | |
143 | for (i = 0; i < num_targets; i++) { | |
144 | if (target[i].state == INACTIVE) { | |
145 | if (first_error == 0) { | |
146 | first_error++; | |
147 | do_log( | |
148 | _("THE FOLLOWING COPIES FAILED TO COMPLETE\n")); | |
149 | } | |
150 | do_log(" %s -- ", target[i].name); | |
151 | if (target[i].err_type == 0) | |
152 | do_log(_("write error")); | |
153 | else | |
154 | do_log(_("lseek64 error")); | |
155 | do_log(_(" at offset %lld\n"), target[i].position); | |
156 | } | |
157 | } | |
158 | if (first_error == 0) { | |
159 | fprintf(stdout, _("All copies completed.\n")); | |
160 | fflush(NULL); | |
161 | } else { | |
162 | fprintf(stderr, _("See \"%s\" for more details.\n"), | |
163 | logfile_name); | |
164 | exit(1); | |
165 | } | |
166 | } | |
167 | ||
168 | /* | |
169 | * don't have to worry about alignment and mins because those | |
170 | * are taken care of when the buffer's read in | |
171 | */ | |
989b74bc NS |
172 | int |
173 | do_write(thread_args *args) | |
174 | { | |
175 | int res, error = 0; | |
176 | ||
177 | if (target[args->id].position != w_buf.position) { | |
178 | if (lseek64(args->fd, w_buf.position, SEEK_SET) < 0) { | |
179 | error = target[args->id].err_type = 1; | |
180 | } else { | |
181 | target[args->id].position = w_buf.position; | |
182 | } | |
183 | } | |
184 | ||
185 | if ((res = write(target[args->id].fd, w_buf.data, | |
186 | w_buf.length)) == w_buf.length) { | |
187 | target[args->id].position += res; | |
188 | } else { | |
189 | error = 2; | |
190 | } | |
191 | ||
192 | if (error) { | |
193 | target[args->id].error = errno; | |
194 | target[args->id].position = w_buf.position; | |
195 | } | |
196 | return error; | |
197 | } | |
6404bb81 NS |
198 | |
199 | void * | |
200 | begin_reader(void *arg) | |
201 | { | |
202 | thread_args *args = arg; | |
6404bb81 NS |
203 | |
204 | for (;;) { | |
205 | pthread_mutex_lock(&args->wait); | |
989b74bc | 206 | if (do_write(args)) |
6404bb81 | 207 | goto handle_error; |
6404bb81 NS |
208 | pthread_mutex_lock(&glob_masks.mutex); |
209 | if (--glob_masks.num_working == 0) | |
210 | pthread_mutex_unlock(&mainwait); | |
211 | pthread_mutex_unlock(&glob_masks.mutex); | |
212 | } | |
213 | /* NOTREACHED */ | |
214 | ||
215 | handle_error: | |
216 | /* error will be logged by primary thread */ | |
217 | ||
6404bb81 NS |
218 | pthread_mutex_lock(&glob_masks.mutex); |
219 | target[args->id].state = INACTIVE; | |
220 | if (--glob_masks.num_working == 0) | |
221 | pthread_mutex_unlock(&mainwait); | |
222 | pthread_mutex_unlock(&glob_masks.mutex); | |
223 | pthread_exit(NULL); | |
32a82561 | 224 | return NULL; |
6404bb81 NS |
225 | } |
226 | ||
227 | void | |
228 | killall(void) | |
229 | { | |
230 | int i; | |
231 | ||
232 | /* only the parent gets to kill things */ | |
233 | ||
234 | if (getpid() != parent_pid) | |
235 | return; | |
236 | ||
237 | for (i = 0; i < num_targets; i++) { | |
238 | if (target[i].state == ACTIVE) { | |
239 | /* kill up target threads */ | |
240 | pthread_kill(target[i].pid, SIGKILL); | |
241 | pthread_mutex_unlock(&targ[i].wait); | |
242 | } | |
243 | } | |
244 | } | |
245 | ||
246 | void | |
247 | handler() | |
248 | { | |
249 | pid_t pid = getpid(); | |
250 | int status, i; | |
251 | ||
252 | pid = wait(&status); | |
253 | ||
254 | kids--; | |
255 | ||
256 | for (i = 0; i < num_targets; i++) { | |
257 | if (target[i].pid == pid) { | |
258 | if (target[i].state == INACTIVE) { | |
259 | /* thread got an I/O error */ | |
260 | ||
261 | if (target[i].err_type == 0) { | |
262 | do_warn( | |
263 | _("%s: write error on target %d \"%s\" at offset %lld\n"), | |
264 | progname, i, target[i].name, | |
265 | target[i].position); | |
266 | } else { | |
267 | do_warn( | |
268 | _("%s: lseek64 error on target %d \"%s\" at offset %lld\n"), | |
269 | progname, i, target[i].name, | |
270 | target[i].position); | |
271 | } | |
272 | ||
273 | do_vfatal(target[i].error, | |
274 | _("Aborting target %d - reason"), i); | |
275 | ||
276 | if (kids == 0) { | |
277 | do_log( | |
278 | _("Aborting XFS copy - no more targets.\n")); | |
279 | check_errors(); | |
280 | pthread_exit(NULL); | |
281 | } | |
282 | ||
32a82561 | 283 | signal(SIGCHLD, handler); |
6404bb81 NS |
284 | return; |
285 | } else { | |
286 | /* it just croaked it bigtime, log it */ | |
287 | ||
288 | do_warn( | |
289 | _("%s: thread %d died unexpectedly, target \"%s\" incomplete\n"), | |
290 | progname, i, target[i].name); | |
989b74bc | 291 | do_warn(_("%s: offset was probably %lld\n"), |
6404bb81 NS |
292 | progname, target[i].position); |
293 | do_fatal(target[i].error, | |
294 | _("Aborting XFS copy - reason")); | |
295 | pthread_exit(NULL); | |
296 | } | |
297 | } | |
298 | } | |
299 | ||
300 | /* unknown child -- something very wrong */ | |
301 | ||
302 | do_warn(_("%s: Unknown child died (should never happen!)\n"), progname); | |
303 | die_perror(); | |
304 | pthread_exit(NULL); | |
32a82561 | 305 | signal(SIGCHLD, handler); |
6404bb81 NS |
306 | } |
307 | ||
308 | void | |
309 | usage(void) | |
310 | { | |
311 | fprintf(stderr, | |
312 | _("Usage: %s [-bd] [-L logfile] source target [target ...]\n"), | |
313 | progname); | |
314 | exit(1); | |
315 | } | |
316 | ||
6404bb81 | 317 | void |
989b74bc NS |
318 | init_bar(__uint64_t source_blocks) |
319 | { | |
320 | int i; | |
321 | ||
322 | for (i = 0; i < 11; i++) | |
323 | barcount[i] = (source_blocks/10)*i; | |
324 | } | |
325 | ||
326 | int | |
327 | bump_bar(int tenths, __uint64_t numblocks) | |
6404bb81 | 328 | { |
989b74bc NS |
329 | static char *bar[11] = { |
330 | " 0% ", | |
331 | " ... 10% ", | |
332 | " ... 20% ", | |
333 | " ... 30% ", | |
334 | " ... 40% ", | |
335 | " ... 50% ", | |
336 | " ... 60% ", | |
337 | " ... 70% ", | |
338 | " ... 80% ", | |
339 | " ... 90% ", | |
340 | " ... 100%\n\n", | |
341 | }; | |
342 | ||
343 | if (tenths > 10) { | |
344 | printf("%s", bar[10]); | |
345 | fflush(stdout); | |
346 | } else { | |
347 | while (tenths < 10 && numblocks > barcount[tenths]) { | |
348 | printf("%s", bar[tenths]); | |
349 | fflush(stdout); | |
350 | tenths++; | |
351 | } | |
352 | } | |
353 | return tenths; | |
6404bb81 NS |
354 | } |
355 | ||
356 | static xfs_off_t source_position = -1; | |
357 | ||
358 | wbuf * | |
359 | wbuf_init(wbuf *buf, int data_size, int data_align, int min_io_size, int id) | |
360 | { | |
361 | buf->id = id; | |
362 | if ((buf->data = memalign(data_align, data_size)) == NULL) | |
363 | return NULL; | |
364 | ASSERT(min_io_size % BBSIZE == 0); | |
365 | buf->min_io_size = min_io_size; | |
366 | buf->size = MAX(data_size, 2*min_io_size); | |
367 | return buf; | |
368 | } | |
369 | ||
370 | void | |
371 | read_wbuf(int fd, wbuf *buf, xfs_mount_t *mp) | |
372 | { | |
373 | int res = 0; | |
374 | xfs_off_t lres = 0; | |
375 | xfs_off_t newpos; | |
376 | size_t diff; | |
377 | ||
378 | newpos = rounddown(buf->position, (xfs_off_t) buf->min_io_size); | |
379 | ||
380 | if (newpos != buf->position) { | |
381 | diff = buf->position - newpos; | |
382 | buf->position = newpos; | |
383 | ||
384 | buf->length += diff; | |
385 | } | |
386 | ||
387 | if (source_position != buf->position) { | |
388 | lres = lseek64(fd, buf->position, SEEK_SET); | |
389 | if (lres < 0LL) { | |
390 | do_warn(_("%s: lseek64 failure at offset %lld\n"), | |
391 | progname, source_position); | |
392 | die_perror(); | |
393 | } | |
394 | source_position = buf->position; | |
395 | } | |
396 | ||
397 | ASSERT(source_position % source_sectorsize == 0); | |
398 | ||
399 | /* round up length for direct I/O if necessary */ | |
400 | ||
401 | if (buf->length % buf->min_io_size != 0) | |
402 | buf->length = roundup(buf->length, buf->min_io_size); | |
403 | ||
404 | if (buf->length > buf->size) { | |
405 | do_warn(_("assert error: buf->length = %d, buf->size = %d\n"), | |
406 | buf->length, buf->size); | |
407 | killall(); | |
408 | abort(); | |
409 | } | |
410 | ||
411 | if ((res = read(fd, buf->data, buf->length)) < 0) { | |
412 | do_warn(_("%s: read failure at offset %lld\n"), | |
413 | progname, source_position); | |
414 | die_perror(); | |
415 | } | |
416 | ||
417 | if (res < buf->length && | |
418 | source_position + res == mp->m_sb.sb_dblocks * source_blocksize) | |
419 | res = buf->length; | |
420 | else | |
421 | ASSERT(res == buf->length); | |
422 | source_position += res; | |
423 | buf->length = res; | |
424 | } | |
425 | ||
989b74bc | 426 | void |
6404bb81 NS |
427 | read_ag_header(int fd, xfs_agnumber_t agno, wbuf *buf, ag_header_t *ag, |
428 | xfs_mount_t *mp, int blocksize, int sectorsize) | |
429 | { | |
430 | xfs_daddr_t off; | |
431 | int length; | |
432 | xfs_off_t newpos; | |
433 | size_t diff; | |
434 | ||
435 | /* initial settings */ | |
436 | ||
437 | diff = 0; | |
438 | off = XFS_AG_DADDR(mp, agno, XFS_SB_DADDR); | |
439 | buf->position = (xfs_off_t) off * (xfs_off_t) BBSIZE; | |
440 | length = buf->length = first_agbno * blocksize; | |
441 | ||
442 | /* handle alignment stuff */ | |
443 | ||
444 | newpos = rounddown(buf->position, (xfs_off_t) buf->min_io_size); | |
445 | if (newpos != buf->position) { | |
446 | diff = buf->position - newpos; | |
447 | buf->position = newpos; | |
448 | buf->length += diff; | |
449 | } | |
450 | ||
451 | /* round up length for direct I/O if necessary */ | |
452 | ||
453 | if (buf->length % buf->min_io_size != 0) | |
454 | buf->length = roundup(buf->length, buf->min_io_size); | |
455 | ||
456 | ASSERT(length != 0); | |
457 | read_wbuf(fd, buf, mp); | |
458 | ASSERT(buf->length >= length); | |
459 | ||
460 | ag->xfs_sb = (xfs_sb_t *) (buf->data + diff); | |
461 | ASSERT(INT_GET(ag->xfs_sb->sb_magicnum, ARCH_CONVERT)==XFS_SB_MAGIC); | |
462 | ag->xfs_agf = (xfs_agf_t *) (buf->data + diff + sectorsize); | |
463 | ASSERT(INT_GET(ag->xfs_agf->agf_magicnum, ARCH_CONVERT)==XFS_AGF_MAGIC); | |
464 | ag->xfs_agi = (xfs_agi_t *) (buf->data + diff + 2*sectorsize); | |
465 | ASSERT(INT_GET(ag->xfs_agi->agi_magicnum, ARCH_CONVERT)==XFS_AGI_MAGIC); | |
466 | ag->xfs_agfl = (xfs_agfl_t *) (buf->data + diff + 3*sectorsize); | |
6404bb81 NS |
467 | } |
468 | ||
989b74bc | 469 | |
6404bb81 NS |
470 | void |
471 | write_wbuf(void) | |
472 | { | |
473 | int i; | |
474 | ||
475 | /* verify target threads */ | |
476 | for (i = 0; i < num_targets; i++) | |
477 | if (target[i].state != INACTIVE) | |
478 | glob_masks.num_working++; | |
479 | ||
480 | /* release target threads */ | |
481 | for (i = 0; i < num_targets; i++) | |
482 | if (target[i].state != INACTIVE) | |
483 | pthread_mutex_unlock(&targ[i].wait); /* wake up */ | |
484 | ||
32a82561 | 485 | sigrelse(SIGCHLD); |
6404bb81 | 486 | pthread_mutex_lock(&mainwait); |
32a82561 | 487 | sighold(SIGCHLD); |
6404bb81 NS |
488 | } |
489 | ||
490 | ||
491 | int | |
492 | main(int argc, char **argv) | |
493 | { | |
989b74bc NS |
494 | int i, j; |
495 | int howfar = 0; | |
6404bb81 | 496 | int open_flags; |
989b74bc | 497 | xfs_off_t pos, end_pos; |
6404bb81 NS |
498 | size_t length; |
499 | int c, size, sizeb, first_residue, tmp_residue; | |
500 | __uint64_t numblocks = 0; | |
6404bb81 NS |
501 | int wblocks = 0; |
502 | int num_threads = 0; | |
503 | struct dioattr d; | |
504 | int wbuf_size; | |
505 | int wbuf_align; | |
506 | int wbuf_miniosize; | |
507 | int source_is_file = 0; | |
508 | int buffered_output = 0; | |
509 | int duplicate_uuids = 0; | |
6404bb81 NS |
510 | uint btree_levels, current_level; |
511 | ag_header_t ag_hdr; | |
512 | xfs_mount_t *mp; | |
513 | xfs_mount_t mbuf; | |
514 | xfs_buf_t *sbp; | |
515 | xfs_sb_t *sb; | |
516 | xfs_agnumber_t num_ags, agno; | |
517 | xfs_agblock_t bno; | |
518 | xfs_daddr_t begin, next_begin, ag_begin, new_begin, ag_end; | |
519 | xfs_alloc_block_t *block; | |
520 | xfs_alloc_ptr_t *ptr; | |
521 | xfs_alloc_rec_t *rec_ptr; | |
522 | extern char *optarg; | |
523 | extern int optind; | |
524 | libxfs_init_t xargs; | |
525 | thread_args *tcarg; | |
6404bb81 NS |
526 | struct stat64 statbuf; |
527 | ||
528 | progname = basename(argv[0]); | |
529 | ||
530 | setlocale(LC_ALL, ""); | |
531 | bindtextdomain(PACKAGE, LOCALEDIR); | |
532 | textdomain(PACKAGE); | |
533 | ||
534 | while ((c = getopt(argc, argv, "bdL:V")) != EOF) { | |
535 | switch (c) { | |
536 | case 'b': | |
537 | buffered_output = 1; | |
538 | break; | |
539 | case 'd': | |
540 | duplicate_uuids = 1; | |
541 | break; | |
542 | case 'L': | |
543 | logfile_name = optarg; | |
544 | break; | |
545 | case 'V': | |
546 | printf(_("%s version %s\n"), progname, VERSION); | |
547 | exit(0); | |
548 | case '?': | |
549 | usage(); | |
550 | } | |
551 | } | |
552 | ||
553 | if (argc - optind < 2) | |
554 | usage(); | |
555 | ||
556 | if (logfile_name) { | |
557 | logfd = open(logfile_name, O_CREAT|O_WRONLY|O_EXCL, 0600); | |
558 | } else { | |
559 | logfile_name = LOGFILE_NAME; | |
560 | logfd = mkstemp(logfile_name); | |
561 | } | |
562 | ||
563 | if (logfd < 0) { | |
564 | fprintf(stderr, _("%s: couldn't open log file \"%s\"\n"), | |
565 | progname, logfile_name); | |
566 | perror(_("Aborting XFS copy - reason")); | |
567 | exit(1); | |
568 | } | |
569 | ||
570 | if ((logerr = fdopen(logfd, "w")) == NULL) { | |
571 | fprintf(stderr, _("%s: couldn't set up logfile stream\n"), | |
572 | progname); | |
573 | perror(_("Aborting XFS copy - reason")); | |
574 | exit(1); | |
575 | } | |
576 | ||
577 | source_name = argv[optind]; | |
578 | source_fd = -1; | |
579 | optind++; | |
580 | ||
581 | num_targets = argc - optind; | |
582 | if ((target = malloc(sizeof(target_control) * num_targets)) == NULL) { | |
583 | do_log(_("Couldn't allocate target array\n")); | |
584 | die_perror(); | |
585 | } | |
586 | for (i = 0; optind < argc; i++, optind++) { | |
587 | target[i].name = argv[optind]; | |
588 | target[i].fd = -1; | |
589 | target[i].position = -1; | |
590 | target[i].state = INACTIVE; | |
591 | target[i].error = 0; | |
592 | target[i].err_type = 0; | |
593 | } | |
594 | ||
595 | parent_pid = getpid(); | |
596 | ||
597 | if (atexit(killall)) { | |
598 | do_log(_("%s: couldn't register atexit function.\n"), progname); | |
599 | die_perror(); | |
600 | } | |
601 | ||
602 | /* open up source -- is it a file? */ | |
603 | ||
604 | open_flags = O_RDONLY; | |
605 | ||
606 | if ((source_fd = open(source_name, open_flags)) < 0) { | |
607 | do_log(_("%s: couldn't open source \"%s\"\n"), | |
608 | progname, source_name); | |
609 | die_perror(); | |
610 | } | |
611 | ||
612 | if (fstat64(source_fd, &statbuf) < 0) { | |
613 | do_log(_("%s: couldn't stat source \"%s\"\n"), | |
614 | progname, source_name); | |
615 | die_perror(); | |
616 | } | |
617 | ||
618 | if (S_ISREG(statbuf.st_mode)) | |
619 | source_is_file = 1; | |
620 | ||
621 | if (source_is_file && platform_test_xfs_fd(source_fd)) { | |
622 | if (fcntl(source_fd, F_SETFL, open_flags | O_DIRECT) < 0) { | |
623 | do_log(_("%s: Cannot set direct I/O flag on \"%s\".\n"), | |
624 | progname, source_name); | |
625 | die_perror(); | |
626 | } | |
627 | if (xfsctl(source_name, source_fd, XFS_IOC_DIOINFO, &d) < 0) { | |
628 | do_log(_("%s: xfsctl on file \"%s\" failed.\n"), | |
629 | progname, source_name); | |
630 | die_perror(); | |
631 | } | |
632 | ||
633 | wbuf_align = d.d_mem; | |
634 | wbuf_size = d.d_maxiosz; | |
635 | wbuf_miniosize = d.d_miniosz; | |
636 | } else { | |
637 | /* set arbitrary I/O params, miniosize at least 1 disk block */ | |
638 | ||
639 | wbuf_align = 4096*4; | |
640 | wbuf_size = 1024 * 4000; | |
641 | wbuf_miniosize = -1; /* set after mounting source fs */ | |
642 | } | |
643 | ||
644 | if (!source_is_file) { | |
645 | /* | |
646 | * check to make sure a filesystem isn't mounted | |
647 | * on the device | |
648 | */ | |
32a82561 | 649 | if (platform_check_ismounted(source_name, NULL, &statbuf, 0)) { |
6404bb81 NS |
650 | do_log( |
651 | _("%s: Warning -- a filesystem is mounted on the source device.\n"), | |
652 | progname); | |
653 | do_log( | |
654 | _("\t\tGenerated copies may be corrupt unless the source is\n")); | |
655 | do_log( | |
656 | _("\t\tunmounted or mounted read-only. Copy proceeding...\n")); | |
657 | } | |
658 | } | |
659 | ||
660 | /* prepare the libxfs_init structure */ | |
661 | ||
662 | memset(&xargs, 0, sizeof(xargs)); | |
663 | xargs.notvolmsg = "oh no %s"; | |
664 | xargs.isreadonly = LIBXFS_ISREADONLY; | |
665 | xargs.notvolok = 1; | |
666 | ||
667 | if (source_is_file) { | |
668 | xargs.dname = source_name; | |
669 | xargs.disfile = 1; | |
670 | } else | |
671 | xargs.volname = source_name; | |
672 | ||
673 | if (!libxfs_init(&xargs)) { | |
674 | do_log(_("%s: couldn't initialize XFS library\n" | |
675 | "%s: Aborting.\n"), progname, progname); | |
676 | exit(1); | |
677 | } | |
678 | ||
679 | /* prepare the mount structure */ | |
680 | ||
681 | sbp = libxfs_readbuf(xargs.ddev, XFS_SB_DADDR, 1, 0); | |
682 | memset(&mbuf, 0, sizeof(xfs_mount_t)); | |
683 | sb = &mbuf.m_sb; | |
684 | libxfs_xlate_sb(XFS_BUF_PTR(sbp), sb, 1, ARCH_CONVERT, XFS_SB_ALL_BITS); | |
685 | ||
686 | mp = libxfs_mount(&mbuf, sb, xargs.ddev, xargs.logdev, xargs.rtdev, 1); | |
687 | if (mp == NULL) { | |
688 | do_log(_("%s: %s filesystem failed to initialize\n" | |
689 | "%s: Aborting.\n"), progname, source_name, progname); | |
690 | exit(1); | |
691 | } else if (mp->m_sb.sb_inprogress) { | |
692 | do_log(_("%s %s filesystem failed to initialize\n" | |
693 | "%s: Aborting.\n"), progname, source_name, progname); | |
694 | exit(1); | |
695 | } else if (mp->m_sb.sb_logstart == 0) { | |
696 | do_log(_("%s: %s has an external log.\n%s: Aborting.\n"), | |
697 | progname, source_name, progname); | |
698 | exit(1); | |
699 | } else if (mp->m_sb.sb_rextents != 0) { | |
700 | do_log(_("%s: %s has a real-time section.\n" | |
701 | "%s: Aborting.\n"), progname, source_name, progname); | |
702 | exit(1); | |
703 | } | |
704 | ||
705 | source_blocksize = mp->m_sb.sb_blocksize; | |
706 | source_sectorsize = mp->m_sb.sb_sectsize; | |
707 | ||
708 | if (wbuf_miniosize == -1) | |
709 | wbuf_miniosize = source_sectorsize; | |
710 | ||
711 | ASSERT(source_blocksize % source_sectorsize == 0); | |
712 | ASSERT(source_sectorsize % BBSIZE == 0); | |
713 | ||
714 | if (source_blocksize > source_sectorsize) { | |
715 | /* get number of leftover sectors in last block of ag header */ | |
716 | ||
717 | tmp_residue = ((XFS_AGFL_DADDR(mp) + 1) * source_sectorsize) | |
718 | % source_blocksize; | |
719 | first_residue = (tmp_residue == 0) ? 0 : | |
720 | source_blocksize - tmp_residue; | |
721 | ASSERT(first_residue % source_sectorsize == 0); | |
722 | } else if (source_blocksize == source_sectorsize) { | |
723 | first_residue = 0; | |
724 | } else { | |
725 | do_log(_("Error: filesystem block size is smaller than the" | |
726 | " disk sectorsize.\nAborting XFS copy now.\n")); | |
727 | exit(1); | |
728 | } | |
729 | ||
730 | first_agbno = (((XFS_AGFL_DADDR(mp) + 1) * source_sectorsize) | |
731 | + first_residue) / source_blocksize; | |
732 | ASSERT(first_agbno != 0); | |
733 | ASSERT( ((((XFS_AGFL_DADDR(mp) + 1) * source_sectorsize) | |
734 | + first_residue) % source_blocksize) == 0); | |
735 | ||
6404bb81 NS |
736 | /* now open targets */ |
737 | ||
738 | open_flags = O_RDWR; | |
739 | ||
740 | for (i = 0; i < num_targets; i++) { | |
741 | int write_last_block = 0; | |
989b74bc | 742 | |
6404bb81 NS |
743 | if (stat64(target[i].name, &statbuf) < 0) { |
744 | /* ok, assume it's a file and create it */ | |
745 | ||
746 | do_out(_("Creating file %s\n"), target[i].name); | |
747 | ||
748 | open_flags |= O_CREAT; | |
749 | if (!buffered_output) | |
750 | open_flags |= O_DIRECT; | |
751 | write_last_block = 1; | |
752 | } else if (S_ISREG(statbuf.st_mode)) { | |
753 | open_flags |= O_TRUNC; | |
754 | if (!buffered_output) | |
755 | open_flags |= O_DIRECT; | |
756 | write_last_block = 1; | |
757 | } else { | |
758 | /* | |
759 | * check to make sure a filesystem isn't mounted | |
760 | * on the device | |
761 | */ | |
32a82561 NS |
762 | if (platform_check_ismounted(target[i].name, |
763 | NULL, &statbuf, 0)) { | |
6404bb81 NS |
764 | do_log(_("%s: a filesystem is mounted " |
765 | "on target device \"%s\".\n" | |
766 | "%s cannot copy to mounted filesystems." | |
767 | " Aborting\n"), | |
768 | progname, target[i].name, progname); | |
769 | exit(1); | |
770 | } | |
771 | } | |
772 | ||
773 | target[i].fd = open(target[i].name, open_flags, 0644); | |
774 | if (target[i].fd < 0) { | |
775 | do_log(_("%s: couldn't open target \"%s\"\n"), | |
776 | progname, target[i].name); | |
777 | die_perror(); | |
778 | } | |
779 | ||
780 | if (write_last_block) { | |
781 | /* ensure regular files are correctly sized */ | |
782 | ||
783 | if (ftruncate64(target[i].fd, mp->m_sb.sb_dblocks * | |
784 | source_blocksize)) { | |
785 | do_log(_("%s: cannot grow data section.\n"), | |
786 | progname); | |
787 | die_perror(); | |
788 | } | |
3422261d NS |
789 | if (platform_test_xfs_fd(target[i].fd)) { |
790 | if (xfsctl(target[i].name, target[i].fd, | |
6404bb81 | 791 | XFS_IOC_DIOINFO, &d) < 0) { |
3422261d NS |
792 | do_log( |
793 | _("%s: xfsctl on \"%s\" failed.\n"), | |
794 | progname, target[i].name); | |
795 | die_perror(); | |
796 | } else { | |
797 | wbuf_align = MAX(wbuf_align, d.d_mem); | |
798 | wbuf_size = MIN(d.d_maxiosz, wbuf_size); | |
799 | wbuf_miniosize = MAX(d.d_miniosz, | |
800 | wbuf_miniosize); | |
801 | } | |
6404bb81 NS |
802 | } |
803 | } else { | |
989b74bc NS |
804 | char *lb[XFS_MAX_SECTORSIZE] = { 0 }; |
805 | off64_t off; | |
6404bb81 NS |
806 | |
807 | /* ensure device files are sufficiently large */ | |
808 | ||
989b74bc NS |
809 | off = mp->m_sb.sb_dblocks * source_blocksize; |
810 | off -= sizeof(lb); | |
811 | if (pwrite64(target[i].fd, lb, sizeof(lb), off) < 0) { | |
6404bb81 NS |
812 | do_log(_("%s: failed to write last block\n"), |
813 | progname); | |
814 | do_log(_("\tIs target \"%s\" too small?\n"), | |
815 | target[i].name); | |
816 | die_perror(); | |
817 | } | |
818 | } | |
6404bb81 NS |
819 | } |
820 | ||
821 | /* initialize locks and bufs */ | |
822 | ||
823 | if (pthread_mutex_init(&glob_masks.mutex, NULL) != 0) { | |
824 | do_log(_("Couldn't initialize global thread mask\n")); | |
825 | die_perror(); | |
826 | } | |
827 | glob_masks.num_working = 0; | |
828 | ||
829 | if (wbuf_init(&w_buf, wbuf_size, wbuf_align, | |
830 | wbuf_miniosize, 0) == NULL) { | |
831 | do_log(_("Error initializing wbuf 0\n")); | |
832 | die_perror(); | |
833 | } | |
834 | ||
835 | wblocks = wbuf_size / BBSIZE; | |
836 | ||
989b74bc NS |
837 | if (wbuf_init(&btree_buf, MAX(source_blocksize, wbuf_miniosize), |
838 | wbuf_align, wbuf_miniosize, 1) == NULL) { | |
6404bb81 NS |
839 | do_log(_("Error initializing btree buf 1\n")); |
840 | die_perror(); | |
841 | } | |
842 | ||
843 | if (pthread_mutex_init(&mainwait,NULL) != 0) { | |
844 | do_log(_("Error creating first semaphore.\n")); | |
845 | die_perror(); | |
846 | exit(1); | |
847 | } | |
848 | /* need to start out blocking */ | |
849 | pthread_mutex_lock(&mainwait); | |
850 | ||
851 | /* set up sigchild signal handler */ | |
852 | ||
32a82561 NS |
853 | signal(SIGCHLD, handler); |
854 | sighold(SIGCHLD); | |
6404bb81 NS |
855 | |
856 | /* make children */ | |
857 | ||
858 | if ((targ = malloc(num_targets * sizeof(thread_args))) == NULL) { | |
859 | do_log(_("Couldn't malloc space for thread args\n")); | |
860 | die_perror(); | |
861 | exit(1); | |
862 | } | |
863 | ||
864 | for (i = 0, tcarg = targ; i < num_targets; i++, tcarg++) { | |
989b74bc NS |
865 | if (!duplicate_uuids) |
866 | uuid_generate(tcarg->uuid); | |
867 | else | |
868 | uuid_copy(tcarg->uuid, mp->m_sb.sb_uuid); | |
869 | ||
6404bb81 NS |
870 | if (pthread_mutex_init(&tcarg->wait, NULL) != 0) { |
871 | do_log(_("Error creating thread mutex %d\n"), i); | |
872 | die_perror(); | |
873 | exit(1); | |
874 | } | |
875 | /* need to start out blocking */ | |
876 | pthread_mutex_lock(&tcarg->wait); | |
877 | } | |
878 | ||
879 | for (i = 0, tcarg = targ; i < num_targets; i++, tcarg++) { | |
880 | tcarg->id = i; | |
881 | tcarg->fd = target[i].fd; | |
882 | ||
883 | target[i].state = ACTIVE; | |
884 | num_threads++; | |
885 | ||
886 | if (pthread_create(&target[i].pid, NULL, | |
887 | begin_reader, (void *)tcarg)) { | |
888 | do_log(_("Error creating thread for target %d\n"), i); | |
889 | die_perror(); | |
890 | } | |
891 | } | |
892 | ||
893 | ASSERT(num_targets == num_threads); | |
894 | ||
895 | /* set up statistics */ | |
896 | ||
897 | num_ags = mp->m_sb.sb_agcount; | |
898 | ||
989b74bc | 899 | init_bar(mp->m_sb.sb_blocksize / BBSIZE |
6404bb81 | 900 | * ((__uint64_t)mp->m_sb.sb_dblocks |
989b74bc | 901 | - (__uint64_t)mp->m_sb.sb_fdblocks + 10 * num_ags)); |
6404bb81 NS |
902 | |
903 | kids = num_targets; | |
904 | block = (xfs_alloc_block_t *) btree_buf.data; | |
905 | ||
906 | for (agno = 0; agno < num_ags && kids > 0; agno++) { | |
907 | /* read in first blocks of the ag */ | |
908 | ||
909 | read_ag_header(source_fd, agno, &w_buf, &ag_hdr, mp, | |
910 | source_blocksize, source_sectorsize); | |
911 | ||
989b74bc | 912 | /* set the in_progress bit for the first AG */ |
6404bb81 NS |
913 | |
914 | if (agno == 0) | |
915 | INT_SET(ag_hdr.xfs_sb->sb_inprogress, ARCH_CONVERT, 1); | |
916 | ||
917 | /* save what we need (agf) in the btree buffer */ | |
918 | ||
919 | bcopy(ag_hdr.xfs_agf, btree_buf.data, source_sectorsize); | |
920 | ag_hdr.xfs_agf = (xfs_agf_t *) btree_buf.data; | |
921 | btree_buf.length = source_blocksize; | |
922 | ||
923 | /* write the ag header out */ | |
924 | ||
925 | write_wbuf(); | |
926 | ||
927 | /* traverse btree until we get to the leftmost leaf node */ | |
928 | ||
929 | bno = INT_GET(ag_hdr.xfs_agf->agf_roots[XFS_BTNUM_BNOi], | |
930 | ARCH_CONVERT); | |
931 | current_level = 0; | |
932 | btree_levels = INT_GET( | |
933 | ag_hdr.xfs_agf->agf_levels[XFS_BTNUM_BNOi], | |
934 | ARCH_CONVERT); | |
935 | ||
936 | ag_end = XFS_AGB_TO_DADDR(mp, agno, | |
937 | INT_GET(ag_hdr.xfs_agf->agf_length,ARCH_CONVERT) - 1) | |
938 | + source_blocksize/BBSIZE; | |
939 | ||
940 | for (;;) { | |
941 | /* none of this touches the w_buf buffer */ | |
942 | ||
943 | ASSERT(current_level < btree_levels); | |
944 | ||
945 | current_level++; | |
946 | ||
947 | btree_buf.position = pos = (xfs_off_t) | |
948 | XFS_AGB_TO_DADDR(mp,agno,bno) << BBSHIFT; | |
949 | btree_buf.length = source_blocksize; | |
950 | ||
951 | read_wbuf(source_fd, &btree_buf, mp); | |
952 | block = (xfs_alloc_block_t *) ((char *) btree_buf.data | |
953 | + pos - btree_buf.position); | |
954 | ||
955 | ASSERT(INT_GET(block->bb_magic,ARCH_CONVERT) == | |
956 | XFS_ABTB_MAGIC); | |
957 | ||
958 | if (INT_GET(block->bb_level,ARCH_CONVERT) == 0) | |
959 | break; | |
960 | ||
961 | ptr = XFS_BTREE_PTR_ADDR(sourceb_blocksize, xfs_alloc, | |
962 | block, 1, mp->m_alloc_mxr[1]), | |
963 | ||
964 | bno = *ptr; | |
965 | } | |
966 | ||
967 | /* align first data copy but don't overwrite ag header */ | |
968 | ||
969 | pos = w_buf.position >> BBSHIFT; | |
970 | length = w_buf.length >> BBSHIFT; | |
971 | next_begin = pos + length; | |
972 | ag_begin = next_begin; | |
973 | ||
974 | ASSERT(w_buf.position % source_sectorsize == 0); | |
975 | ||
976 | /* handle the rest of the ag */ | |
977 | ||
978 | for (;;) { | |
979 | if (INT_GET(block->bb_level,ARCH_CONVERT) != 0) { | |
980 | do_log( | |
981 | _("WARNING: source filesystem inconsistent.\n")); | |
982 | do_log( | |
983 | _(" A leaf btree rec isn't a leaf. Aborting now.\n")); | |
984 | exit(1); | |
985 | } | |
986 | ||
987 | rec_ptr = XFS_BTREE_REC_ADDR(source_blocksize, | |
988 | xfs_alloc, block, 1, mp->m_alloc_mxr[0]); | |
989 | ||
990 | for (i = 0; | |
991 | i < INT_GET(block->bb_numrecs,ARCH_CONVERT); | |
992 | i++, rec_ptr++) { | |
993 | /* calculate in daddr's */ | |
994 | ||
995 | begin = next_begin; | |
996 | ||
997 | /* | |
998 | * protect against pathological case of a | |
999 | * hole right after the ag header in a | |
1000 | * mis-aligned case | |
1001 | */ | |
1002 | ||
1003 | if (begin < ag_begin) | |
1004 | begin = ag_begin; | |
1005 | ||
1006 | /* | |
1007 | * round size up to ensure we copy a | |
1008 | * range bigger than required | |
1009 | */ | |
1010 | ||
1011 | sizeb = XFS_AGB_TO_DADDR(mp, agno, | |
1012 | INT_GET(rec_ptr->ar_startblock, | |
1013 | ARCH_CONVERT)) - begin; | |
1014 | size = roundup(sizeb <<BBSHIFT, wbuf_miniosize); | |
1015 | if (size > 0) { | |
1016 | /* copy extent */ | |
1017 | ||
1018 | w_buf.position = (xfs_off_t) | |
1019 | begin << BBSHIFT; | |
1020 | ||
1021 | while (size > 0) { | |
1022 | /* | |
1023 | * let lower layer do alignment | |
1024 | */ | |
1025 | if (size > w_buf.size) { | |
1026 | w_buf.length = w_buf.size; | |
1027 | size -= w_buf.size; | |
1028 | sizeb -= wblocks; | |
1029 | numblocks += wblocks; | |
1030 | } else { | |
1031 | w_buf.length = size; | |
1032 | numblocks += sizeb; | |
1033 | size = 0; | |
1034 | } | |
1035 | ||
1036 | read_wbuf(source_fd, &w_buf, mp); | |
1037 | write_wbuf(); | |
1038 | ||
1039 | w_buf.position += w_buf.length; | |
1040 | ||
989b74bc NS |
1041 | howfar = bump_bar( |
1042 | howfar, numblocks); | |
6404bb81 NS |
1043 | } |
1044 | } | |
1045 | ||
1046 | /* round next starting point down */ | |
1047 | ||
1048 | new_begin = XFS_AGB_TO_DADDR(mp, agno, | |
1049 | INT_GET(rec_ptr->ar_startblock, | |
1050 | ARCH_CONVERT) + | |
1051 | INT_GET(rec_ptr->ar_blockcount, | |
1052 | ARCH_CONVERT)); | |
1053 | next_begin = rounddown(new_begin, | |
1054 | w_buf.min_io_size >> BBSHIFT); | |
1055 | } | |
1056 | ||
1057 | if (INT_GET(block->bb_rightsib,ARCH_CONVERT) == | |
1058 | NULLAGBLOCK) | |
1059 | break; | |
1060 | ||
1061 | /* read in next btree record block */ | |
1062 | ||
1063 | btree_buf.position = pos = (xfs_off_t) | |
1064 | XFS_AGB_TO_DADDR(mp, agno, | |
1065 | INT_GET(block->bb_rightsib, | |
1066 | ARCH_CONVERT)) << BBSHIFT; | |
1067 | btree_buf.length = source_blocksize; | |
1068 | ||
1069 | /* let read_wbuf handle alignment */ | |
1070 | ||
1071 | read_wbuf(source_fd, &btree_buf, mp); | |
1072 | ||
1073 | block = (xfs_alloc_block_t *) ((char *) btree_buf.data | |
1074 | + pos - btree_buf.position); | |
1075 | ||
1076 | ASSERT(INT_GET(block->bb_magic,ARCH_CONVERT) == | |
1077 | XFS_ABTB_MAGIC); | |
1078 | } | |
1079 | ||
1080 | /* | |
1081 | * write out range of used blocks after last range | |
1082 | * of free blocks in AG | |
1083 | */ | |
1084 | if (next_begin < ag_end) { | |
1085 | begin = next_begin; | |
1086 | ||
1087 | sizeb = ag_end - begin; | |
1088 | size = roundup(sizeb << BBSHIFT, wbuf_miniosize); | |
1089 | ||
1090 | if (size > 0) { | |
1091 | /* copy extent */ | |
1092 | ||
1093 | w_buf.position = (xfs_off_t) begin << BBSHIFT; | |
1094 | ||
1095 | while (size > 0) { | |
1096 | /* | |
1097 | * let lower layer do alignment | |
1098 | */ | |
1099 | if (size > w_buf.size) { | |
1100 | w_buf.length = w_buf.size; | |
1101 | size -= w_buf.size; | |
1102 | sizeb -= wblocks; | |
1103 | numblocks += wblocks; | |
1104 | } else { | |
1105 | w_buf.length = size; | |
1106 | numblocks += sizeb; | |
1107 | size = 0; | |
1108 | } | |
1109 | ||
1110 | read_wbuf(source_fd, &w_buf, mp); | |
1111 | write_wbuf(); | |
1112 | ||
1113 | w_buf.position += w_buf.length; | |
1114 | ||
989b74bc | 1115 | howfar = bump_bar(howfar, numblocks); |
6404bb81 NS |
1116 | } |
1117 | } | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | if (kids > 0) { | |
989b74bc | 1122 | /* write a clean log using the specified UUID */ |
6404bb81 | 1123 | |
989b74bc NS |
1124 | for (j = 0, tcarg = targ; j < num_targets; j++) { |
1125 | w_buf.owner = tcarg; | |
1126 | w_buf.length = rounddown(w_buf.size, w_buf.min_io_size); | |
6404bb81 | 1127 | |
989b74bc NS |
1128 | pos = write_log_header(source_fd, &w_buf, mp); |
1129 | end_pos = write_log_trailer(source_fd, &w_buf, mp); | |
6404bb81 | 1130 | |
989b74bc NS |
1131 | w_buf.position = pos; |
1132 | memset(w_buf.data, 0, w_buf.length); | |
6404bb81 | 1133 | |
989b74bc NS |
1134 | while (w_buf.position < end_pos) { |
1135 | do_write(tcarg); | |
1136 | w_buf.position += w_buf.length; | |
1137 | } | |
1138 | tcarg++; | |
1139 | } | |
6404bb81 | 1140 | |
989b74bc NS |
1141 | /* reread and rewrite superblocks (UUID and in-progress) */ |
1142 | /* [backwards, so inprogress bit only updated when done] */ | |
1143 | ||
1144 | if (duplicate_uuids) | |
1145 | num_ags = 1; | |
1146 | for (i = num_ags - 1; i >= 0; i--) { | |
1147 | read_ag_header(source_fd, i, &w_buf, &ag_hdr, mp, | |
1148 | source_blocksize, source_sectorsize); | |
1149 | if (i == 0) | |
1150 | ag_hdr.xfs_sb->sb_inprogress = 0; | |
6404bb81 | 1151 | |
989b74bc NS |
1152 | /* do each thread in turn, each has its own UUID */ |
1153 | ||
1154 | for (j = 0, tcarg = targ; j < num_targets; j++) { | |
1155 | uuid_copy(ag_hdr.xfs_sb->sb_uuid, tcarg->uuid); | |
1156 | do_write(tcarg); | |
1157 | tcarg++; | |
1158 | } | |
1159 | } | |
1160 | ||
1161 | bump_bar(100, 0); | |
6404bb81 NS |
1162 | } |
1163 | ||
1164 | check_errors(); | |
1165 | killall(); | |
1166 | pthread_exit(NULL); | |
1167 | /*NOTREACHED*/ | |
1168 | return 0; | |
1169 | } | |
989b74bc NS |
1170 | |
1171 | xfs_caddr_t | |
1172 | next_log_chunk(xfs_caddr_t p, int offset, void *private) | |
1173 | { | |
1174 | wbuf *buf = (wbuf *)private; | |
1175 | ||
1176 | if (buf->length < (int)(p - buf->data) + offset) { | |
1177 | /* need to flush this one, then start afresh */ | |
1178 | ||
1179 | do_write(buf->owner); | |
1180 | memset(buf->data, 0, buf->length); | |
1181 | return buf->data; | |
1182 | } | |
1183 | return p + offset; | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * Writes a log header at the start of the log (with the real | |
1188 | * filesystem UUID embedded into it), and writes to all targets. | |
1189 | * | |
1190 | * Returns the next buffer-length-aligned disk address. | |
1191 | */ | |
1192 | xfs_off_t | |
1193 | write_log_header(int fd, wbuf *buf, xfs_mount_t *mp) | |
1194 | { | |
1195 | xfs_caddr_t p = buf->data; | |
1196 | xfs_off_t logstart; | |
1197 | int offset; | |
1198 | ||
1199 | logstart = XFS_FSB_TO_DADDR(mp, mp->m_sb.sb_logstart) << BBSHIFT; | |
1200 | buf->position = rounddown(logstart, (xfs_off_t)buf->length); | |
1201 | ||
1202 | memset(p, 0, buf->size); | |
1203 | if (logstart % buf->length) { /* unaligned */ | |
1204 | read_wbuf(fd, buf, mp); | |
1205 | offset = logstart - buf->position; | |
1206 | p += offset; | |
1207 | memset(p, 0, buf->length - offset); | |
1208 | } | |
1209 | ||
1210 | offset = libxfs_log_header(p, &buf->owner->uuid, | |
1211 | XFS_SB_VERSION_HASLOGV2(&mp->m_sb) ? 2 : 1, | |
1212 | mp->m_sb.sb_logsunit, XLOG_FMT, | |
1213 | next_log_chunk, buf); | |
1214 | do_write(buf->owner); | |
1215 | ||
1216 | return logstart + roundup(offset, buf->length); | |
1217 | } | |
1218 | ||
1219 | /* | |
1220 | * May do an aligned read of the last buffer in the log (& zero | |
1221 | * the start of that buffer). Returns the disk address at the | |
1222 | * end of last aligned buffer in the log. | |
1223 | */ | |
1224 | xfs_off_t | |
1225 | write_log_trailer(int fd, wbuf *buf, xfs_mount_t *mp) | |
1226 | { | |
1227 | xfs_off_t logend; | |
1228 | int offset; | |
1229 | ||
1230 | logend = XFS_FSB_TO_DADDR(mp, mp->m_sb.sb_logstart) << BBSHIFT; | |
1231 | logend += XFS_FSB_TO_B(mp, mp->m_sb.sb_logblocks); | |
1232 | ||
1233 | buf->position = rounddown(logend, (xfs_off_t)buf->length); | |
1234 | ||
1235 | if (logend % buf->length) { /* unaligned */ | |
1236 | read_wbuf(fd, buf, mp); | |
1237 | offset = (int)(logend - buf->position); | |
1238 | memset(buf->data, 0, offset); | |
1239 | do_write(buf->owner); | |
1240 | } | |
1241 | ||
1242 | return buf->position; | |
1243 | } |