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51e135ce A |
1 | /* |
2 | * Copyright (c) 1999-2013 Apple Computer, Inc. All rights reserved. | |
3 | * | |
4 | * @APPLE_LICENSE_HEADER_START@ | |
5 | * | |
6 | * This file contains Original Code and/or Modifications of Original Code | |
7 | * as defined in and that are subject to the Apple Public Source License | |
8 | * Version 2.0 (the 'License'). You may not use this file except in | |
9 | * compliance with the License. Please obtain a copy of the License at | |
10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
11 | * file. | |
12 | * | |
13 | * The Original Code and all software distributed under the License are | |
14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
18 | * Please see the License for the specific language governing rights and | |
19 | * limitations under the License. | |
20 | * | |
21 | * @APPLE_LICENSE_HEADER_END@ | |
22 | */ | |
23 | ||
24 | #include <sys/types.h> | |
25 | ||
26 | #include <sys/attr.h> | |
27 | #include <sys/mount.h> | |
28 | #include <sys/stat.h> | |
29 | #include <sys/sysctl.h> | |
30 | #include <sys/time.h> | |
31 | #include <sys/uio.h> | |
32 | #include <sys/vnode.h> | |
33 | #include <sys/wait.h> | |
34 | #include <sys/ioctl.h> | |
35 | #include <sys/disk.h> | |
36 | ||
37 | #include <ctype.h> | |
38 | #include <err.h> | |
39 | #include <errno.h> | |
40 | #include <fcntl.h> | |
41 | #include <grp.h> | |
42 | #include <limits.h> | |
43 | #include <pwd.h> | |
44 | #include <stdio.h> | |
45 | #include <stdlib.h> | |
46 | #include <string.h> | |
47 | #include <unistd.h> | |
48 | #include <signal.h> | |
49 | ||
50 | #include <hfs/hfs_mount.h> | |
51 | #include <hfs/hfs_format.h> | |
52 | ||
53 | #include <TargetConditionals.h> | |
54 | ||
55 | /* Sensible wrappers over the byte-swapping routines */ | |
56 | #include "hfs_endian.h" | |
de8ee011 A |
57 | #if TARGET_OS_OSX |
58 | #include "optical.h" //only include optical headers on Macs | |
59 | #endif //osx | |
51e135ce A |
60 | |
61 | #include <mntopts.h> | |
62 | ||
63 | ||
41dcebd9 A |
64 | /* |
65 | * Replay the journal. We don't care if there are problems. | |
66 | */ | |
67 | static void | |
68 | replay_journal(const char *device) | |
69 | { | |
70 | struct vfsconf vfc; | |
71 | int mib[4]; | |
72 | int fd = -1; | |
73 | ||
74 | fd = open(device, O_RDWR); | |
75 | if (fd == -1) { | |
76 | warn("Could not open block device %s for writing", device); | |
77 | goto done; | |
78 | } | |
79 | if (getvfsbyname("hfs", &vfc) != 0) { | |
80 | warn("Could not get hfs vfs information"); | |
81 | goto done; | |
82 | } | |
83 | mib[0] = CTL_VFS; | |
84 | mib[1] = vfc.vfc_typenum; | |
85 | mib[2] = HFS_REPLAY_JOURNAL; | |
86 | mib[3] = fd; | |
87 | (void)sysctl(mib, 4, NULL, NULL, NULL, 0); | |
88 | ||
89 | done: | |
90 | if (fd != -1) | |
91 | close(fd); | |
92 | return; | |
93 | } | |
94 | ||
51e135ce A |
95 | struct mntopt mopts[] = { |
96 | MOPT_STDOPTS, | |
97 | MOPT_IGNORE_OWNERSHIP, | |
98 | MOPT_PERMISSIONS, | |
99 | MOPT_UPDATE, | |
100 | { NULL } | |
101 | }; | |
102 | ||
103 | #define HFS_MOUNT_TYPE "hfs" | |
104 | ||
105 | gid_t a_gid __P((char *)); | |
106 | uid_t a_uid __P((char *)); | |
107 | mode_t a_mask __P((char *)); | |
108 | struct hfs_mnt_encoding * a_encoding __P((char *)); | |
109 | int get_encoding_pref __P((const char *)); | |
110 | int get_encoding_bias __P((void)); | |
111 | unsigned int get_default_encoding(void); | |
112 | ||
113 | void usage __P((void)); | |
114 | ||
115 | ||
116 | int is_hfs_std = 0; | |
117 | int wrapper_requested = 0; | |
118 | ||
119 | typedef struct CreateDateAttrBuf { | |
120 | u_int32_t size; | |
121 | struct timespec creationTime; | |
122 | } CreateDateAttrBuf; | |
123 | ||
124 | #define HFS_BLOCK_SIZE 512 | |
125 | ||
126 | /* | |
127 | * This is the straight GMT conversion constant: | |
128 | * 00:00:00 January 1, 1970 - 00:00:00 January 1, 1904 | |
129 | * (3600 * 24 * ((365 * (1970 - 1904)) + (((1970 - 1904) / 4) + 1))) | |
130 | */ | |
131 | #define MAC_GMT_FACTOR 2082844800UL | |
132 | ||
133 | #define KEXT_LOAD_COMMAND "/sbin/kextload" | |
134 | ||
c7ca4fb3 | 135 | #define ENCODING_MODULE_PATH "/System/Library/Filesystems/hfs.fs/Contents/Resources/Encodings/" |
51e135ce A |
136 | |
137 | #define MXENCDNAMELEN 16 /* Maximun length of encoding name string */ | |
138 | ||
139 | struct hfs_mnt_encoding { | |
140 | char encoding_name[MXENCDNAMELEN]; /* encoding type name */ | |
141 | u_int32_t encoding_id; /* encoding type number */ | |
142 | }; | |
143 | ||
144 | ||
145 | /* | |
146 | * Lookup table for hfs encoding names | |
147 | * Note: Names must be in alphabetical order | |
148 | */ | |
149 | struct hfs_mnt_encoding hfs_mnt_encodinglist[] = { | |
150 | { "Arabic", 4 }, | |
151 | { "Armenian", 24 }, | |
152 | { "Bengali", 13 }, | |
153 | { "Burmese", 19 }, | |
154 | { "Celtic", 39 }, | |
155 | { "CentralEurRoman", 29 }, | |
156 | { "ChineseSimp", 25 }, | |
157 | { "ChineseTrad", 2 }, | |
158 | { "Croatian", 36 }, | |
159 | { "Cyrillic", 7 }, | |
160 | { "Devanagari", 9 }, | |
161 | { "Ethiopic", 28 }, | |
162 | { "Farsi", 140 }, | |
163 | { "Gaelic", 40 }, | |
164 | { "Georgian", 23 }, | |
165 | { "Greek", 6 }, | |
166 | { "Gujarati", 11 }, | |
167 | { "Gurmukhi", 10 }, | |
168 | { "Hebrew", 5 }, | |
169 | { "Icelandic", 37 }, | |
170 | { "Japanese", 1 }, | |
171 | { "Kannada", 16 }, | |
172 | { "Khmer", 20 }, | |
173 | { "Korean", 3 }, | |
174 | { "Laotian", 22 }, | |
175 | { "Malayalam", 17 }, | |
176 | { "Mongolian", 27 }, | |
177 | { "Oriya", 12 }, | |
178 | { "Roman", 0 }, /* default */ | |
179 | { "Romanian", 38 }, | |
180 | { "Sinhalese", 18 }, | |
181 | { "Tamil", 14 }, | |
182 | { "Telugu", 15 }, | |
183 | { "Thai", 21 }, | |
184 | { "Tibetan", 26 }, | |
185 | { "Turkish", 35 }, | |
186 | { "Ukrainian", 152 }, | |
187 | { "Vietnamese", 30 }, | |
188 | }; | |
189 | ||
190 | ||
191 | /* | |
192 | If path is a path to a block device, then return a path to the | |
193 | corresponding raw device. Else return path unchanged. | |
194 | */ | |
195 | const char *rawdevice(const char *path) | |
196 | { | |
197 | const char *devdisk = "/dev/disk"; | |
198 | static char raw[MAXPATHLEN]; | |
199 | ||
200 | if (!strncmp(path, devdisk, strlen(devdisk))) { | |
201 | /* The +5 below is strlen("/dev/"), so path+5 points to "disk..." */ | |
202 | int sn_len = snprintf(raw, sizeof(raw), "/dev/r%s", path+5); | |
203 | if (sn_len < 0) { | |
204 | /* error in building string. return original. */ | |
205 | return path; | |
206 | } | |
207 | ||
208 | if ((unsigned long) sn_len < sizeof(raw)) { | |
209 | return raw; | |
210 | } | |
211 | } | |
212 | return path; | |
213 | } | |
214 | ||
215 | ||
216 | /* | |
217 | GetMasterBlock | |
218 | ||
219 | Return a pointer to the Master Directory Block or Volume Header Block | |
220 | for the volume. In the case of an HFS volume with embedded HFS Plus | |
221 | volume, this returns the HFS (wrapper) volume's Master Directory Block. | |
222 | That is, the 512 bytes at offset 1024 bytes from the start of the given | |
223 | device/partition. | |
224 | ||
225 | The master block is cached globally. If it has previously been read in, | |
226 | the cached copy will be returned. If this routine is called multiple times, | |
227 | it must be called with the same device string. | |
228 | ||
229 | Arguments: | |
230 | device Path name to disk device (eg., "/dev/disk0s2") | |
231 | ||
232 | Returns: | |
233 | A pointer to the MDB or VHB. This pointer may be in the middle of a | |
234 | malloc'ed block. There may be more than 512 bytes of malloc'ed memory | |
235 | at the returned address. | |
236 | ||
237 | Errors: | |
238 | On error, this routine returns NULL. | |
239 | */ | |
240 | void *GetMasterBlock(const char *device) | |
241 | { | |
242 | static char *masterBlock = NULL; | |
243 | char *buf = NULL; | |
244 | int err; | |
245 | int fd = -1; | |
246 | uint32_t blockSize; | |
247 | ssize_t amount; | |
248 | off_t offset; | |
249 | ||
250 | /* | |
251 | * If we already read the master block, then just return it. | |
252 | */ | |
253 | if (masterBlock != NULL) { | |
254 | return masterBlock; | |
255 | } | |
256 | ||
257 | device = rawdevice(device); | |
258 | ||
259 | fd = open(device, O_RDONLY | O_NDELAY, 0); | |
260 | if (fd < 0) { | |
261 | fprintf(stderr, "GetMasterBlock: Error %d opening %s\n", errno, device); | |
262 | goto done; | |
263 | } | |
264 | ||
265 | /* | |
266 | * Get the block size so we can read an entire block. | |
267 | */ | |
268 | err = ioctl(fd, DKIOCGETBLOCKSIZE, &blockSize); | |
269 | if (err == -1) { | |
270 | fprintf(stderr, "GetMasterBlock: Error %d getting block size\n", errno); | |
271 | goto done; | |
272 | } | |
273 | ||
274 | /* | |
275 | * Figure out the offset of the start of the block which contains | |
276 | * byte offset 1024 (the start of the master block). This is 1024 | |
277 | * rounded down to a multiple of blockSize. But since blockSize is | |
278 | * always a power of two, this will be either 0 (if blockSize > 1024) | |
279 | * or 1024 (if blockSize <= 1024). | |
280 | */ | |
281 | offset = blockSize > 1024 ? 0 : 1024; | |
282 | ||
283 | /* | |
284 | * Allocate a buffer and read the block. | |
285 | */ | |
286 | buf = malloc(blockSize); | |
287 | if (buf == NULL) { | |
288 | fprintf(stderr, "GetMasterBlock: Could not malloc %u bytes\n", blockSize); | |
289 | goto done; | |
290 | } | |
291 | amount = pread(fd, buf, blockSize, offset); | |
292 | if (amount != blockSize) { | |
293 | fprintf(stderr, "GetMasterBlock: Error %d from read; amount=%ld, wanted=%u\n", errno, amount, blockSize); | |
294 | goto done; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Point at the part of the buffer containing the master block. | |
299 | * Then return that pointer. | |
300 | * | |
301 | * Note: if blockSize <= 1024, then offset = 1024, and the master | |
302 | * block is at the start of the buffer. If blockSize > 1024, then | |
303 | * offset = 0, and the master block is at offset 1024 from the start | |
304 | * of the buffer. | |
305 | */ | |
306 | masterBlock = buf + 1024 - offset; | |
307 | buf = NULL; /* Don't free memory that masterBlock points into. */ | |
308 | ||
309 | done: | |
310 | if (fd >= 0) | |
311 | close(fd); | |
312 | if (buf != NULL) | |
313 | free(buf); | |
314 | return masterBlock; | |
315 | } | |
316 | ||
317 | ||
318 | u_int32_t getVolumeCreateDate(const char *device) | |
319 | { | |
320 | HFSMasterDirectoryBlock * mdbPtr; | |
321 | u_int32_t volume_create_time = 0; | |
322 | ||
323 | mdbPtr = GetMasterBlock(device); | |
324 | if (mdbPtr == NULL) goto exit; | |
325 | ||
326 | /* get the create date from the MDB (embedded case) or Volume Header */ | |
327 | if ((mdbPtr->drSigWord == SWAP_BE16 (kHFSSigWord)) && | |
328 | (mdbPtr->drEmbedSigWord == SWAP_BE16 (kHFSPlusSigWord))) { | |
329 | /* Embedded volume*/ | |
330 | volume_create_time = SWAP_BE32 (mdbPtr->drCrDate); | |
331 | ||
332 | } else if (mdbPtr->drSigWord == kHFSPlusSigWord ) { | |
333 | HFSPlusVolumeHeader * volHdrPtr = (HFSPlusVolumeHeader *) mdbPtr; | |
334 | ||
335 | volume_create_time = SWAP_BE32 (volHdrPtr->createDate); | |
336 | } else { | |
337 | goto exit; /* cound not match signature */ | |
338 | } | |
339 | ||
340 | if (volume_create_time > MAC_GMT_FACTOR) | |
341 | volume_create_time -= MAC_GMT_FACTOR; | |
342 | else | |
343 | volume_create_time = 0; /* don't let date go negative! */ | |
344 | ||
345 | exit: | |
346 | return volume_create_time; | |
347 | } | |
348 | ||
349 | void syncCreateDate(const char *mntpt, u_int32_t localCreateTime) | |
350 | { | |
351 | int result; | |
352 | char path[256]; | |
353 | struct attrlist attributes; | |
354 | CreateDateAttrBuf attrReturnBuffer; | |
355 | int64_t gmtCreateTime; | |
356 | int32_t gmtOffset; | |
357 | int32_t newCreateTime; | |
358 | ||
359 | snprintf(path, sizeof(path), "%s/", mntpt); | |
360 | ||
361 | attributes.bitmapcount = ATTR_BIT_MAP_COUNT; | |
362 | attributes.reserved = 0; | |
363 | attributes.commonattr = ATTR_CMN_CRTIME; | |
364 | attributes.volattr = 0; | |
365 | attributes.dirattr = 0; | |
366 | attributes.fileattr = 0; | |
367 | attributes.forkattr = 0; | |
368 | ||
369 | result = getattrlist(path, &attributes, &attrReturnBuffer, sizeof(attrReturnBuffer), 0 ); | |
370 | if (result) return; | |
371 | ||
372 | gmtCreateTime = attrReturnBuffer.creationTime.tv_sec; | |
373 | gmtOffset = gmtCreateTime - (int64_t) localCreateTime + 900; | |
374 | if (gmtOffset > 0) { | |
375 | gmtOffset = 1800 * (gmtOffset / 1800); | |
376 | } else { | |
377 | gmtOffset = -1800 * ((-gmtOffset + 1799) / 1800); | |
378 | } | |
379 | ||
380 | newCreateTime = localCreateTime + gmtOffset; | |
381 | ||
382 | /* | |
383 | * if the root directory's create date doesn't match | |
384 | * and its within +/- 15 seconds, then update it | |
385 | */ | |
386 | if ((newCreateTime != attrReturnBuffer.creationTime.tv_sec) && | |
387 | (( newCreateTime - attrReturnBuffer.creationTime.tv_sec) > -15) && | |
388 | ((newCreateTime - attrReturnBuffer.creationTime.tv_sec) < 15)) { | |
389 | ||
390 | attrReturnBuffer.creationTime.tv_sec = (time_t) newCreateTime; | |
391 | (void) setattrlist (path, | |
392 | &attributes, | |
393 | &attrReturnBuffer.creationTime, | |
394 | sizeof(attrReturnBuffer.creationTime), | |
395 | 0); | |
396 | } | |
397 | } | |
398 | ||
399 | /* | |
400 | * load_encoding | |
401 | * loads an hfs encoding converter module into the kernel | |
402 | * | |
403 | * Note: unloading of encoding converter modules is done in the kernel | |
404 | */ | |
405 | static int | |
406 | load_encoding(struct hfs_mnt_encoding *encp) | |
407 | { | |
408 | int pid; | |
409 | int loaded; | |
410 | union wait status; | |
411 | struct stat sb; | |
412 | char kmodfile[MAXPATHLEN]; | |
413 | ||
414 | /* MacRoman encoding (0) is built into the kernel */ | |
415 | if (encp->encoding_id == 0) | |
416 | return (0); | |
417 | ||
418 | snprintf(kmodfile, sizeof(kmodfile), "%sHFS_Mac%s.kext", ENCODING_MODULE_PATH, encp->encoding_name); | |
419 | if (stat(kmodfile, &sb) == -1) { | |
420 | fprintf(stdout, "unable to find: %s\n", kmodfile); | |
421 | return (-1); | |
422 | } | |
423 | ||
424 | loaded = 0; | |
425 | pid = fork(); | |
426 | if (pid == 0) { | |
427 | (void) execl(KEXT_LOAD_COMMAND, KEXT_LOAD_COMMAND, kmodfile, NULL); | |
428 | ||
429 | exit(1); /* We can only get here if the exec failed */ | |
430 | } else if (pid != -1) { | |
431 | if ((waitpid(pid, (int *)&status, 0) == pid) && WIFEXITED(status)) { | |
432 | /* we attempted a load */ | |
433 | loaded = 1; | |
434 | } | |
435 | } | |
436 | ||
437 | if (!loaded) { | |
438 | fprintf(stderr, "unable to load: %s\n", kmodfile); | |
439 | return (-1); | |
440 | } | |
441 | return (0); | |
442 | } | |
443 | ||
444 | int | |
445 | main(argc, argv) | |
446 | int argc; | |
447 | char **argv; | |
448 | { | |
449 | struct hfs_mount_args args; | |
450 | int ch, mntflags; | |
451 | char *dev, dir[MAXPATHLEN]; | |
452 | int mountStatus; | |
453 | struct timeval dummy_timeval; /* gettimeofday() crashes if the first argument is NULL */ | |
454 | u_int32_t localCreateTime; | |
455 | struct hfs_mnt_encoding *encp; | |
456 | ||
41dcebd9 A |
457 | int do_rekey = 0; |
458 | int tmp_mntflags = 0; | |
de8ee011 A |
459 | |
460 | #if TARGET_OS_IPHONE | |
51e135ce | 461 | mntflags = MNT_NOATIME; |
de8ee011 | 462 | #else // !TARGET_OS_IPHONE |
51e135ce | 463 | mntflags = 0; |
de8ee011 A |
464 | #endif // TARGET_OS_IPHONE |
465 | ||
51e135ce A |
466 | encp = NULL; |
467 | (void)memset(&args, '\0', sizeof(struct hfs_mount_args)); | |
468 | ||
469 | /* | |
470 | * For a mount update, the following args must be explictly | |
471 | * passed in as options to change their value. On a new | |
472 | * mount, default values will be computed for all args. | |
473 | */ | |
474 | args.flags = VNOVAL; | |
475 | args.hfs_uid = (uid_t)VNOVAL; | |
476 | args.hfs_gid = (gid_t)VNOVAL; | |
477 | args.hfs_mask = (mode_t)VNOVAL; | |
478 | args.hfs_encoding = (u_int32_t)VNOVAL; | |
479 | ||
480 | optind = optreset = 1; /* Reset for parse of new argv. */ | |
481 | while ((ch = getopt(argc, argv, "xu:g:m:e:o:wt:jc")) != EOF) { | |
482 | switch (ch) { | |
483 | case 't': { | |
484 | char *ptr; | |
485 | unsigned long tbufsize = strtoul(optarg, &ptr, 0); | |
486 | if (tbufsize >= UINT_MAX) { | |
487 | tbufsize = UINT_MAX; | |
488 | } | |
489 | args.journal_tbuffer_size = (unsigned int) strtoul(optarg, &ptr, 0); | |
490 | if ((args.journal_tbuffer_size == 0 || | |
491 | ((uint32_t) args.journal_tbuffer_size) == UINT_MAX) && errno != 0) { | |
492 | fprintf(stderr, "%s: Invalid tbuffer size %s\n", argv[0], optarg); | |
493 | exit(5); | |
494 | } else { | |
495 | if (*ptr == 'k') | |
496 | args.journal_tbuffer_size *= 1024; | |
497 | else if (*ptr == 'm') | |
498 | args.journal_tbuffer_size *= 1024*1024; | |
499 | } | |
500 | if (args.flags == VNOVAL){ | |
501 | args.flags = 0; | |
502 | } | |
503 | args.flags |= HFSFSMNT_EXTENDED_ARGS; | |
504 | break; | |
505 | } | |
506 | case 'j': | |
507 | /* disable the journal */ | |
508 | if(args.flags == VNOVAL){ | |
509 | args.flags = 0; | |
510 | } | |
511 | args.flags |= HFSFSMNT_EXTENDED_ARGS; | |
512 | args.journal_disable = 1; | |
513 | break; | |
514 | case 'c': | |
515 | // XXXdbg JOURNAL_NO_GROUP_COMMIT == 0x0001 | |
516 | args.journal_flags = 0x0001; | |
517 | break; | |
518 | case 'x': | |
519 | if (args.flags == VNOVAL) | |
520 | args.flags = 0; | |
521 | args.flags |= HFSFSMNT_NOXONFILES; | |
522 | break; | |
523 | case 'u': | |
524 | args.hfs_uid = a_uid(optarg); | |
525 | break; | |
526 | case 'g': | |
527 | args.hfs_gid = a_gid(optarg); | |
528 | break; | |
529 | case 'm': | |
530 | args.hfs_mask = a_mask(optarg); | |
531 | break; | |
532 | case 'e': | |
533 | encp = a_encoding(optarg); | |
534 | break; | |
535 | case 'o': | |
536 | { | |
537 | int dummy; | |
538 | getmntopts(optarg, mopts, &mntflags, &dummy); | |
539 | } | |
540 | break; | |
541 | case 'w': | |
542 | if (args.flags == VNOVAL) | |
543 | args.flags = 0; | |
544 | args.flags |= HFSFSMNT_WRAPPER; | |
545 | wrapper_requested = 1; | |
546 | break; | |
547 | case '?': | |
548 | usage(); | |
549 | break; | |
550 | default: | |
551 | #if DEBUG | |
552 | printf("mount_hfs: ERROR: unrecognized ch = '%c'\n", ch); | |
553 | #endif | |
554 | usage(); | |
555 | }; /* switch */ | |
556 | } | |
557 | ||
558 | if ((mntflags & MNT_IGNORE_OWNERSHIP) && !(mntflags & MNT_UPDATE)) { | |
559 | /* | |
560 | * The defaults to be supplied in lieu of the on-disk permissions | |
561 | * (could be overridden by explicit -u, -g, or -m options): | |
562 | */ | |
563 | if (args.hfs_uid == (uid_t)VNOVAL) args.hfs_uid = UNKNOWNUID; | |
564 | if (args.hfs_gid == (gid_t)VNOVAL) args.hfs_gid = UNKNOWNGID; | |
565 | #if OVERRIDE_UNKNOWN_PERMISSIONS | |
566 | if (args.hfs_mask == (mode_t)VNOVAL) args.hfs_mask = ACCESSPERMS; /* 0777 */ | |
567 | #endif | |
568 | } | |
569 | argc -= optind; | |
570 | argv += optind; | |
571 | ||
572 | if (argc != 2) { | |
573 | #if DEBUG | |
574 | printf("mount_hfs: ERROR: argc == %d != 2\n", argc); | |
575 | #endif | |
576 | usage(); | |
577 | } | |
578 | ||
579 | dev = argv[0]; | |
580 | ||
581 | if (realpath(argv[1], dir) == NULL) | |
582 | err(1, "realpath %s", dir); | |
583 | ||
584 | args.fspec = dev; | |
585 | ||
586 | /* HFS volumes need timezone info to convert local to GMT */ | |
587 | (void) gettimeofday( &dummy_timeval, &args.hfs_timezone ); | |
588 | ||
589 | /* load requested encoding (if any) for hfs volume */ | |
590 | if (encp != NULL) { | |
591 | if (load_encoding(encp) != 0) | |
592 | exit(1); /* load failure */ | |
593 | args.hfs_encoding = encp->encoding_id; | |
594 | } | |
595 | ||
596 | /* | |
597 | * For a new mount (non-update case) fill in default values for all args | |
598 | */ | |
599 | if ((mntflags & MNT_UPDATE) == 0) { | |
600 | ||
601 | struct stat sb; | |
602 | ||
603 | if (args.flags == VNOVAL) | |
604 | args.flags = 0; | |
605 | ||
606 | if ((args.hfs_encoding == (u_int32_t)VNOVAL) && (encp == NULL)) { | |
607 | int encoding; | |
608 | ||
609 | /* Find a suitable encoding preference. */ | |
610 | if ((encoding = get_encoding_pref(dev)) != -1) { | |
611 | /* | |
612 | * Note: the encoding kext was loaded by | |
613 | * hfs.util during the file system probe. | |
614 | */ | |
615 | args.hfs_encoding = encoding; | |
616 | } else { | |
617 | args.hfs_encoding = 0; | |
618 | } | |
619 | } | |
620 | /* when the mountpoint is root, use default values */ | |
621 | if (strcmp(dir, "/") == 0) { | |
622 | sb.st_mode = 0777; | |
623 | sb.st_uid = 0; | |
624 | sb.st_gid = 0; | |
625 | ||
626 | /* otherwise inherit from the mountpoint */ | |
627 | } else if (stat(dir, &sb) == -1) | |
628 | err(1, "stat %s", dir); | |
629 | ||
630 | if (args.hfs_uid == (uid_t)VNOVAL) | |
631 | args.hfs_uid = sb.st_uid; | |
632 | ||
633 | if (args.hfs_gid == (gid_t)VNOVAL) | |
634 | args.hfs_gid = sb.st_gid; | |
635 | ||
636 | if (args.hfs_mask == (mode_t)VNOVAL) | |
637 | args.hfs_mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); | |
638 | } | |
c7ca4fb3 | 639 | |
51e135ce A |
640 | #if DEBUG |
641 | printf("mount_hfs: calling mount: \n" ); | |
642 | printf("\tdevice = %s\n", dev); | |
643 | printf("\tmount point = %s\n", dir); | |
644 | printf("\tmount flags = 0x%08x\n", mntflags); | |
645 | printf("\targ flags = 0x%x\n", args.flags); | |
646 | printf("\tuid = %d\n", args.hfs_uid); | |
647 | printf("\tgid = %d\n", args.hfs_gid); | |
648 | printf("\tmode = %o\n", args.hfs_mask); | |
649 | printf("\tencoding = %ld\n", args.hfs_encoding); | |
650 | ||
651 | #endif | |
652 | ||
de8ee011 | 653 | #if TARGET_OS_OSX |
41dcebd9 A |
654 | /* |
655 | * We shouldn't really be calling up to other layers, but | |
656 | * an exception was made in this case to fix the situation | |
657 | * where HFS was writable on optical media. | |
658 | */ | |
659 | ||
660 | if ((_optical_is_writable(dev) & _OPTICAL_WRITABLE_PACKET)) { | |
661 | mntflags |= MNT_RDONLY; | |
662 | } | |
51e135ce A |
663 | #endif |
664 | ||
41dcebd9 A |
665 | if (is_hfs_std) |
666 | mntflags |= MNT_RDONLY; | |
667 | ||
668 | if ((mntflags & MNT_RDONLY) == 0) { | |
669 | /* | |
670 | * get the volume's create date so we can synchronize | |
671 | * it with the root directory create date | |
672 | */ | |
673 | localCreateTime = getVolumeCreateDate(dev); | |
674 | } | |
675 | else { | |
676 | localCreateTime = 0; | |
677 | } | |
678 | ||
51e135ce | 679 | if ((mountStatus = mount(HFS_MOUNT_TYPE, dir, mntflags, &args)) < 0) { |
41dcebd9 | 680 | printf("mount_hfs: error on mount(): error = %d.\n", mountStatus); |
41dcebd9 A |
681 | err(1, NULL); |
682 | }; | |
683 | ||
684 | /* | |
685 | * synchronize the root directory's create date | |
686 | * with the volume's create date | |
687 | */ | |
688 | if (localCreateTime) | |
689 | syncCreateDate(dir, localCreateTime); | |
690 | ||
691 | ||
51e135ce A |
692 | exit(0); |
693 | } | |
694 | ||
695 | ||
696 | gid_t | |
697 | a_gid(s) | |
698 | char *s; | |
699 | { | |
700 | struct group *gr; | |
701 | char *gname, *orig = s; | |
702 | gid_t gid = 0; | |
703 | ||
704 | if (*s == '-') | |
705 | s++; | |
706 | for (gname = s; *s && isdigit(*s); ++s); | |
707 | if (!*s) { | |
708 | gid = atoi(gname); | |
709 | } else { | |
710 | gr = getgrnam(orig); | |
711 | if (gr == NULL) | |
712 | errx(1, "unknown group id: %s", orig); | |
713 | gid = gr->gr_gid; | |
714 | } | |
715 | return (gid); | |
716 | } | |
717 | ||
718 | uid_t | |
719 | a_uid(s) | |
720 | char *s; | |
721 | { | |
722 | struct passwd *pw; | |
723 | char *uname, *orig = s; | |
724 | uid_t uid = 0; | |
725 | ||
726 | if (*s == '-') | |
727 | s++; | |
728 | for (uname = s; *s && isdigit(*s); ++s); | |
729 | if (!*s) { | |
730 | uid = atoi(uname); | |
731 | } else { | |
732 | pw = getpwnam(orig); | |
733 | if (pw == NULL) | |
734 | errx(1, "unknown user id: %s", orig); | |
735 | uid = pw->pw_uid; | |
736 | } | |
737 | return (uid); | |
738 | } | |
739 | ||
740 | mode_t | |
741 | a_mask(s) | |
742 | char *s; | |
743 | { | |
744 | int done, rv; | |
745 | char *ep; | |
746 | ||
747 | done = 0; | |
748 | rv = -1; | |
749 | if (*s >= '0' && *s <= '7') { | |
750 | done = 1; | |
751 | rv = strtol(optarg, &ep, 8); | |
752 | } | |
753 | if (!done || rv < 0 || *ep) | |
754 | errx(1, "invalid file mode: %s", s); | |
755 | return (rv); | |
756 | } | |
757 | ||
758 | struct hfs_mnt_encoding * | |
759 | a_encoding(s) | |
760 | char *s; | |
761 | { | |
762 | char *uname; | |
763 | int i; | |
764 | u_int32_t encoding; | |
765 | struct hfs_mnt_encoding *p, *q, *enclist; | |
766 | int elements = sizeof(hfs_mnt_encodinglist) / sizeof(struct hfs_mnt_encoding); | |
767 | int compare; | |
768 | ||
769 | /* Use a binary search to find an encoding match */ | |
770 | p = hfs_mnt_encodinglist; | |
771 | q = p + (elements - 1); | |
772 | while (p <= q) { | |
773 | enclist = p + ((q - p) >> 1); /* divide by 2 */ | |
774 | compare = strcmp(s, enclist->encoding_name); | |
775 | if (compare < 0) | |
776 | q = enclist - 1; | |
777 | else if (compare > 0) | |
778 | p = enclist + 1; | |
779 | else | |
780 | return (enclist); | |
781 | } | |
782 | ||
783 | for (uname = s; *s && isdigit(*s); ++s); | |
784 | ||
785 | if (*s) goto unknown; | |
786 | ||
787 | encoding = atoi(uname); | |
788 | for (i=0, enclist = hfs_mnt_encodinglist; i < elements; i++, enclist++) { | |
789 | if (enclist->encoding_id == encoding) | |
790 | return (enclist); | |
791 | } | |
792 | ||
793 | unknown: | |
794 | errx(1, "unknown encoding: %s", uname); | |
795 | return (NULL); | |
796 | } | |
797 | ||
798 | ||
799 | /* | |
800 | * Get file system's encoding preference. | |
801 | */ | |
802 | int | |
803 | get_encoding_pref(const char *device) | |
804 | { | |
805 | struct hfs_mnt_encoding *enclist; | |
806 | HFSMasterDirectoryBlock * mdbp; | |
807 | int encoding = -1; | |
808 | int elements; | |
809 | int i; | |
810 | ||
811 | mdbp = GetMasterBlock(device); | |
812 | if (mdbp == NULL) | |
813 | return 0; | |
814 | ||
815 | if (SWAP_BE16(mdbp->drSigWord) != kHFSSigWord || | |
816 | (SWAP_BE16(mdbp->drEmbedSigWord) == kHFSPlusSigWord && (!wrapper_requested))) { | |
817 | return (-1); | |
818 | } | |
819 | else { | |
820 | is_hfs_std = 1; | |
821 | } | |
822 | encoding = GET_HFS_TEXT_ENCODING(SWAP_BE32(mdbp->drFndrInfo[4])); | |
823 | ||
824 | if (encoding == -1) { | |
825 | encoding = get_encoding_bias(); | |
826 | if (encoding == 0 || encoding == -1) | |
827 | encoding = get_default_encoding(); | |
828 | } | |
829 | ||
830 | /* Check if this is a supported encoding. */ | |
831 | elements = sizeof(hfs_mnt_encodinglist) / sizeof(struct hfs_mnt_encoding); | |
832 | for (i=0, enclist = hfs_mnt_encodinglist; i < elements; i++, enclist++) { | |
833 | if (enclist->encoding_id == encoding) | |
834 | return (encoding); | |
835 | } | |
836 | ||
837 | return (0); | |
838 | } | |
839 | ||
840 | /* | |
841 | * Get kernel's encoding bias. | |
842 | */ | |
843 | int | |
844 | get_encoding_bias() | |
845 | { | |
846 | int mib[3]; | |
847 | size_t buflen = sizeof(int); | |
848 | struct vfsconf vfc; | |
849 | int hint = 0; | |
850 | ||
851 | if (getvfsbyname("hfs", &vfc) < 0) | |
852 | goto error; | |
853 | ||
854 | mib[0] = CTL_VFS; | |
855 | mib[1] = vfc.vfc_typenum; | |
856 | mib[2] = HFS_ENCODINGBIAS; | |
857 | ||
858 | if (sysctl(mib, 3, &hint, &buflen, NULL, 0) < 0) | |
859 | goto error; | |
860 | return (hint); | |
861 | error: | |
862 | return (-1); | |
863 | } | |
864 | ||
865 | #define __kCFUserEncodingFileName ("/.CFUserTextEncoding") | |
866 | ||
867 | unsigned int | |
868 | get_default_encoding() | |
869 | { | |
870 | struct passwd *passwdp; | |
871 | ||
872 | if ((passwdp = getpwuid(0))) { /* root account */ | |
873 | char buffer[MAXPATHLEN + 1]; | |
874 | int fd; | |
875 | ||
876 | strlcpy(buffer, passwdp->pw_dir, sizeof(buffer)); | |
877 | strlcat(buffer, __kCFUserEncodingFileName, sizeof(buffer)); | |
878 | ||
879 | if ((fd = open(buffer, O_RDONLY, 0)) > 0) { | |
880 | ssize_t readSize; | |
881 | ||
882 | readSize = read(fd, buffer, MAXPATHLEN); | |
883 | buffer[(readSize < 0 ? 0 : readSize)] = '\0'; | |
884 | close(fd); | |
885 | return strtol(buffer, NULL, 0); | |
886 | } | |
887 | } | |
888 | return (0); /* Fallback to smRoman */ | |
889 | } | |
890 | ||
891 | ||
892 | void | |
893 | usage() | |
894 | { | |
895 | (void)fprintf(stderr, | |
896 | "usage: mount_hfs [-xw] [-u user] [-g group] [-m mask] [-e encoding] [-t tbuffer-size] [-j] [-c] [-o options] special-device filesystem-node\n"); | |
51e135ce A |
897 | |
898 | exit(1); | |
899 | } |