1 /* $NetBSD: cd9660.c,v 1.31 2011/08/06 23:25:19 christos Exp $ */
2
3 /*
4 * Copyright (c) 2005 Daniel Watt, Walter Deignan, Ryan Gabrys, Alan
5 * Perez-Rathke and Ram Vedam. All rights reserved.
6 *
7 * This code was written by Daniel Watt, Walter Deignan, Ryan Gabrys,
8 * Alan Perez-Rathke and Ram Vedam.
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer in the documentation and/or other materials provided
18 * with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY DANIEL WATT, WALTER DEIGNAN, RYAN
21 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL DANIEL WATT, WALTER DEIGNAN, RYAN
25 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE,DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
32 * OF SUCH DAMAGE.
33 */
34 /*
35 * Copyright (c) 2001 Wasabi Systems, Inc.
36 * All rights reserved.
37 *
38 * Written by Luke Mewburn for Wasabi Systems, Inc.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 * 1. Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * 2. Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in the
47 * documentation and/or other materials provided with the distribution.
48 * 3. All advertising materials mentioning features or use of this software
49 * must display the following acknowledgement:
50 * This product includes software developed for the NetBSD Project by
51 * Wasabi Systems, Inc.
52 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
53 * or promote products derived from this software without specific prior
54 * written permission.
55 *
56 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
57 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
58 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
59 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
60 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
61 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
62 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
63 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
64 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
65 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
66 * POSSIBILITY OF SUCH DAMAGE.
67 */
68 /*
69 * Copyright (c) 1982, 1986, 1989, 1993
70 * The Regents of the University of California. All rights reserved.
71 *
72 * Redistribution and use in source and binary forms, with or without
73 * modification, are permitted provided that the following conditions
74 * are met:
75 * 1. Redistributions of source code must retain the above copyright
76 * notice, this list of conditions and the following disclaimer.
77 * 2. Redistributions in binary form must reproduce the above copyright
78 * notice, this list of conditions and the following disclaimer in the
79 * documentation and/or other materials provided with the distribution.
80 * 3. Neither the name of the University nor the names of its contributors
81 * may be used to endorse or promote products derived from this software
82 * without specific prior written permission.
83 *
84 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
85 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
86 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
87 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
88 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
89 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
90 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
91 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
93 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
94 * SUCH DAMAGE.
95 *
96 */
97
98 #include <sys/cdefs.h>
99 __FBSDID("$FreeBSD: stable/10/usr.sbin/makefs/cd9660.c 316198 2017-03-30 02:02:48Z sevan $");
100
101 #include <string.h>
102 #include <ctype.h>
103 #include <sys/param.h>
104 #include <sys/queue.h>
105
106 #include "makefs.h"
107 #include "cd9660.h"
108 #include "cd9660/iso9660_rrip.h"
109 #include "cd9660/cd9660_archimedes.h"
110
111 /*
112 * Global variables
113 */
114 iso9660_disk diskStructure;
115
116 static void cd9660_finalize_PVD(void);
117 static cd9660node *cd9660_allocate_cd9660node(void);
118 static void cd9660_set_defaults(void);
119 static int cd9660_arguments_set_string(const char *, const char *, int,
120 char, char *);
121 static void cd9660_populate_iso_dir_record(
122 struct _iso_directory_record_cd9660 *, u_char, u_char, u_char,
123 const char *);
124 static void cd9660_setup_root_node(void);
125 static int cd9660_setup_volume_descriptors(void);
126 #if 0
127 static int cd9660_fill_extended_attribute_record(cd9660node *);
128 #endif
129 static void cd9660_sort_nodes(cd9660node *);
130 static int cd9660_translate_node_common(cd9660node *);
131 static int cd9660_translate_node(fsnode *, cd9660node *);
132 static int cd9660_compare_filename(const char *, const char *);
133 static void cd9660_sorted_child_insert(cd9660node *, cd9660node *);
134 static int cd9660_handle_collisions(cd9660node *, int);
135 static cd9660node *cd9660_rename_filename(cd9660node *, int, int);
136 static void cd9660_copy_filenames(cd9660node *);
137 static void cd9660_sorting_nodes(cd9660node *);
138 static int cd9660_count_collisions(cd9660node *);
139 static cd9660node *cd9660_rrip_move_directory(cd9660node *);
140 static int cd9660_add_dot_records(cd9660node *);
141
142 static void cd9660_convert_structure(fsnode *, cd9660node *, int,
143 int *, int *);
144 static void cd9660_free_structure(cd9660node *);
145 static int cd9660_generate_path_table(void);
146 static int cd9660_level1_convert_filename(const char *, char *, int);
147 static int cd9660_level2_convert_filename(const char *, char *, int);
148 #if 0
149 static int cd9660_joliet_convert_filename(const char *, char *, int);
150 #endif
151 static int cd9660_convert_filename(const char *, char *, int);
152 static void cd9660_populate_dot_records(cd9660node *);
153 static int64_t cd9660_compute_offsets(cd9660node *, int64_t);
154 #if 0
155 static int cd9660_copy_stat_info(cd9660node *, cd9660node *, int);
156 #endif
157 static cd9660node *cd9660_create_virtual_entry(const char *, cd9660node *, int,
158 int);
159 static cd9660node *cd9660_create_file(const char *, cd9660node *, cd9660node *);
160 static cd9660node *cd9660_create_directory(const char *, cd9660node *,
161 cd9660node *);
162 static cd9660node *cd9660_create_special_directory(u_char, cd9660node *);
163
164
165 /*
166 * Allocate and initialize a cd9660node
167 * @returns struct cd9660node * Pointer to new node, or NULL on error
168 */
169 static cd9660node *
cd9660_allocate_cd9660node(void)170 cd9660_allocate_cd9660node(void)
171 {
172 cd9660node *temp;
173
174 if ((temp = calloc(1, sizeof(cd9660node))) == NULL)
175 err(EXIT_FAILURE, "%s: calloc", __func__);
176 TAILQ_INIT(&temp->cn_children);
177 temp->parent = temp->dot_record = temp->dot_dot_record = NULL;
178 temp->ptnext = temp->ptprev = temp->ptlast = NULL;
179 temp->node = NULL;
180 temp->isoDirRecord = NULL;
181 temp->isoExtAttributes = NULL;
182 temp->rr_real_parent = temp->rr_relocated = NULL;
183 temp->su_tail_data = NULL;
184 return temp;
185 }
186
187 int cd9660_defaults_set = 0;
188
189 /**
190 * Set default values for cd9660 extension to makefs
191 */
192 static void
cd9660_set_defaults(void)193 cd9660_set_defaults(void)
194 {
195 /*Fix the sector size for now, though the spec allows for other sizes*/
196 diskStructure.sectorSize = 2048;
197
198 /* Set up defaults in our own structure */
199 diskStructure.verbose_level = 0;
200 diskStructure.keep_bad_images = 0;
201 diskStructure.follow_sym_links = 0;
202 diskStructure.isoLevel = 2;
203
204 diskStructure.rock_ridge_enabled = 0;
205 diskStructure.rock_ridge_renamed_dir_name = 0;
206 diskStructure.rock_ridge_move_count = 0;
207 diskStructure.rr_moved_dir = 0;
208
209 diskStructure.archimedes_enabled = 0;
210 diskStructure.chrp_boot = 0;
211
212 diskStructure.include_padding_areas = 1;
213
214 /* Spec breaking functionality */
215 diskStructure.allow_deep_trees =
216 diskStructure.allow_start_dot =
217 diskStructure.allow_max_name =
218 diskStructure.allow_illegal_chars =
219 diskStructure.allow_lowercase =
220 diskStructure.allow_multidot =
221 diskStructure.omit_trailing_period = 0;
222
223 /* Make sure the PVD is clear */
224 memset(&diskStructure.primaryDescriptor, 0, 2048);
225
226 memset(diskStructure.primaryDescriptor.publisher_id, 0x20,128);
227 memset(diskStructure.primaryDescriptor.preparer_id, 0x20,128);
228 memset(diskStructure.primaryDescriptor.application_id, 0x20,128);
229 memset(diskStructure.primaryDescriptor.copyright_file_id, 0x20,37);
230 memset(diskStructure.primaryDescriptor.abstract_file_id, 0x20,37);
231 memset(diskStructure.primaryDescriptor.bibliographic_file_id, 0x20,37);
232
233 strcpy(diskStructure.primaryDescriptor.system_id, "FreeBSD");
234
235 cd9660_defaults_set = 1;
236
237 /* Boot support: Initially disabled */
238 diskStructure.has_generic_bootimage = 0;
239 diskStructure.generic_bootimage = NULL;
240
241 diskStructure.boot_image_directory = 0;
242 /*memset(diskStructure.boot_descriptor, 0, 2048);*/
243
244 diskStructure.is_bootable = 0;
245 TAILQ_INIT(&diskStructure.boot_images);
246 LIST_INIT(&diskStructure.boot_entries);
247 }
248
249 void
cd9660_prep_opts(fsinfo_t * fsopts __unused)250 cd9660_prep_opts(fsinfo_t *fsopts __unused)
251 {
252 cd9660_set_defaults();
253 }
254
255 void
cd9660_cleanup_opts(fsinfo_t * fsopts __unused)256 cd9660_cleanup_opts(fsinfo_t *fsopts __unused)
257 {
258
259 }
260
261 static int
cd9660_arguments_set_string(const char * val,const char * fieldtitle,int length,char testmode,char * dest)262 cd9660_arguments_set_string(const char *val, const char *fieldtitle, int length,
263 char testmode, char * dest)
264 {
265 int len, test;
266
267 if (val == NULL)
268 warnx("error: The %s requires a string argument", fieldtitle);
269 else if ((len = strlen(val)) <= length) {
270 if (testmode == 'd')
271 test = cd9660_valid_d_chars(val);
272 else
273 test = cd9660_valid_a_chars(val);
274 if (test) {
275 memcpy(dest, val, len);
276 if (test == 2)
277 cd9660_uppercase_characters(dest, len);
278 return 1;
279 } else
280 warnx("error: The %s must be composed of "
281 "%c-characters", fieldtitle, testmode);
282 } else
283 warnx("error: The %s must be at most 32 characters long",
284 fieldtitle);
285 return 0;
286 }
287
288 /*
289 * Command-line parsing function
290 */
291
292 int
cd9660_parse_opts(const char * option,fsinfo_t * fsopts)293 cd9660_parse_opts(const char *option, fsinfo_t *fsopts)
294 {
295 char *var, *val;
296 int rv;
297 /* Set up allowed options - integer options ONLY */
298 option_t cd9660_options[] = {
299 { "l", &diskStructure.isoLevel, 1, 2, "ISO Level" },
300 { "isolevel", &diskStructure.isoLevel, 1, 2, "ISO Level" },
301 { "verbose", &diskStructure.verbose_level, 0, 2,
302 "Turns on verbose output" },
303 { "v", &diskStructure.verbose_level, 0 , 2,
304 "Turns on verbose output"},
305 { .name = NULL }
306 };
307
308 if (cd9660_defaults_set == 0)
309 cd9660_set_defaults();
310
311 /*
312 * Todo : finish implementing this, and make a function that
313 * parses them
314 */
315 /*
316 string_option_t cd9660_string_options[] = {
317 { "L", "Label", &diskStructure.primaryDescriptor.volume_id, 1, 32, "Disk Label", ISO_STRING_FILTER_DCHARS },
318 { NULL }
319 }
320 */
321
322 assert(option != NULL);
323
324 if (debug & DEBUG_FS_PARSE_OPTS)
325 printf("cd9660_parse_opts: got `%s'\n", option);
326
327 if ((var = strdup(option)) == NULL)
328 err(1, "allocating memory for copy of option string");
329 rv = 1;
330
331 val = strchr(var, '=');
332 if (val != NULL)
333 *val++ = '\0';
334
335 /* First handle options with no parameters */
336 if (strcmp(var, "h") == 0) {
337 diskStructure.displayHelp = 1;
338 rv = 1;
339 } else if (CD9660_IS_COMMAND_ARG_DUAL(var, "S", "follow-symlinks")) {
340 /* this is not handled yet */
341 diskStructure.follow_sym_links = 1;
342 rv = 1;
343 } else if (CD9660_IS_COMMAND_ARG_DUAL(var, "L", "label")) {
344 rv = cd9660_arguments_set_string(val, "Disk Label", 32, 'd',
345 diskStructure.primaryDescriptor.volume_id);
346 } else if (CD9660_IS_COMMAND_ARG_DUAL(var, "A", "applicationid")) {
347 rv = cd9660_arguments_set_string(val, "Application Identifier", 128, 'a',
348 diskStructure.primaryDescriptor.application_id);
349 } else if(CD9660_IS_COMMAND_ARG_DUAL(var, "P", "publisher")) {
350 rv = cd9660_arguments_set_string(val, "Publisher Identifier",
351 128, 'a', diskStructure.primaryDescriptor.publisher_id);
352 } else if (CD9660_IS_COMMAND_ARG_DUAL(var, "p", "preparer")) {
353 rv = cd9660_arguments_set_string(val, "Preparer Identifier",
354 128, 'a', diskStructure.primaryDescriptor.preparer_id);
355 } else if (CD9660_IS_COMMAND_ARG_DUAL(var, "V", "volumeid")) {
356 rv = cd9660_arguments_set_string(val, "Volume Set Identifier",
357 128, 'a', diskStructure.primaryDescriptor.volume_set_id);
358 /* Boot options */
359 } else if (CD9660_IS_COMMAND_ARG_DUAL(var, "B", "bootimage")) {
360 if (val == NULL)
361 warnx("error: The Boot Image parameter requires a valid boot information string");
362 else
363 rv = cd9660_add_boot_disk(val);
364 } else if (CD9660_IS_COMMAND_ARG(var, "bootimagedir")) {
365 /*
366 * XXXfvdl this is unused.
367 */
368 if (val == NULL)
369 errx(1, "error: The Boot Image Directory parameter"
370 " requires a directory name\n");
371 else {
372 if ((diskStructure.boot_image_directory =
373 malloc(strlen(val) + 1)) == NULL) {
374 CD9660_MEM_ALLOC_ERROR("cd9660_parse_opts");
375 exit(1);
376 }
377
378 /* BIG TODO: Add the max length function here */
379 cd9660_arguments_set_string(val, "Boot Image Directory",
380 12 , 'd', diskStructure.boot_image_directory);
381 }
382 } else if (CD9660_IS_COMMAND_ARG_DUAL(var, "G", "generic-bootimage")) {
383 if (val == NULL)
384 warnx("error: The Boot Image parameter requires a valid boot information string");
385 else
386 rv = cd9660_add_generic_bootimage(val);
387 } else if (CD9660_IS_COMMAND_ARG(var, "no-trailing-padding"))
388 diskStructure.include_padding_areas = 0;
389 /* RRIP */
390 else if (CD9660_IS_COMMAND_ARG_DUAL(var, "R", "rockridge"))
391 diskStructure.rock_ridge_enabled = 1;
392 else if (CD9660_IS_COMMAND_ARG_DUAL(var, "A", "archimedes"))
393 diskStructure.archimedes_enabled = 1;
394 else if (CD9660_IS_COMMAND_ARG(var, "chrp-boot"))
395 diskStructure.chrp_boot = 1;
396 else if (CD9660_IS_COMMAND_ARG_DUAL(var, "K", "keep-bad-images"))
397 diskStructure.keep_bad_images = 1;
398 else if (CD9660_IS_COMMAND_ARG(var, "allow-deep-trees"))
399 diskStructure.allow_deep_trees = 1;
400 else if (CD9660_IS_COMMAND_ARG(var, "allow-max-name"))
401 diskStructure.allow_max_name = 1;
402 else if (CD9660_IS_COMMAND_ARG(var, "allow-illegal-chars"))
403 diskStructure.allow_illegal_chars = 1;
404 else if (CD9660_IS_COMMAND_ARG(var, "allow-lowercase"))
405 diskStructure.allow_lowercase = 1;
406 else if (CD9660_IS_COMMAND_ARG(var,"allow-multidot"))
407 diskStructure.allow_multidot = 1;
408 else if (CD9660_IS_COMMAND_ARG(var, "omit-trailing-period"))
409 diskStructure.omit_trailing_period = 1;
410 else if (CD9660_IS_COMMAND_ARG(var, "no-emul-boot") ||
411 CD9660_IS_COMMAND_ARG(var, "no-boot") ||
412 CD9660_IS_COMMAND_ARG(var, "hard-disk-boot")) {
413 cd9660_eltorito_add_boot_option(var, 0);
414
415 /* End of flag variables */
416 } else if (CD9660_IS_COMMAND_ARG(var, "boot-load-segment")) {
417 if (val == NULL) {
418 warnx("Option `%s' doesn't contain a value", var);
419 rv = 0;
420 } else {
421 cd9660_eltorito_add_boot_option(var, val);
422 }
423 } else {
424 if (val == NULL) {
425 warnx("Option `%s' doesn't contain a value", var);
426 rv = 0;
427 } else
428 rv = set_option(cd9660_options, var, val);
429 }
430
431 free(var);
432 return (rv);
433 }
434
435 /*
436 * Main function for cd9660_makefs
437 * Builds the ISO image file
438 * @param const char *image The image filename to create
439 * @param const char *dir The directory that is being read
440 * @param struct fsnode *root The root node of the filesystem tree
441 * @param struct fsinfo_t *fsopts Any options
442 */
443 void
cd9660_makefs(const char * image,const char * dir,fsnode * root,fsinfo_t * fsopts)444 cd9660_makefs(const char *image, const char *dir, fsnode *root,
445 fsinfo_t *fsopts)
446 {
447 int64_t startoffset;
448 int numDirectories;
449 uint64_t pathTableSectors;
450 int64_t firstAvailableSector;
451 int64_t totalSpace;
452 int error;
453 cd9660node *real_root;
454
455 if (diskStructure.verbose_level > 0)
456 printf("cd9660_makefs: ISO level is %i\n",
457 diskStructure.isoLevel);
458 if (diskStructure.isoLevel < 2 &&
459 diskStructure.allow_multidot)
460 errx(1, "allow-multidot requires iso level of 2\n");
461
462 assert(image != NULL);
463 assert(dir != NULL);
464 assert(root != NULL);
465
466 if (diskStructure.displayHelp) {
467 /*
468 * Display help here - probably want to put it in
469 * a separate function
470 */
471 return;
472 }
473
474 if (diskStructure.verbose_level > 0)
475 printf("cd9660_makefs: image %s directory %s root %p\n",
476 image, dir, root);
477
478 /* Set up some constants. Later, these will be defined with options */
479
480 /* Counter needed for path tables */
481 numDirectories = 0;
482
483 /* Convert tree to our own format */
484 /* Actually, we now need to add the REAL root node, at level 0 */
485
486 real_root = cd9660_allocate_cd9660node();
487 if ((real_root->isoDirRecord =
488 malloc( sizeof(iso_directory_record_cd9660) )) == NULL) {
489 CD9660_MEM_ALLOC_ERROR("cd9660_makefs");
490 exit(1);
491 }
492
493 /* Leave filename blank for root */
494 memset(real_root->isoDirRecord->name, 0,
495 ISO_FILENAME_MAXLENGTH_WITH_PADDING);
496
497 real_root->level = 0;
498 diskStructure.rootNode = real_root;
499 real_root->type = CD9660_TYPE_DIR;
500 error = 0;
501 real_root->node = root;
502 cd9660_convert_structure(root, real_root, 1, &numDirectories, &error);
503
504 if (TAILQ_EMPTY(&real_root->cn_children)) {
505 errx(1, "cd9660_makefs: converted directory is empty. "
506 "Tree conversion failed\n");
507 } else if (error != 0) {
508 errx(1, "cd9660_makefs: tree conversion failed\n");
509 } else {
510 if (diskStructure.verbose_level > 0)
511 printf("cd9660_makefs: tree converted\n");
512 }
513
514 /* Add the dot and dot dot records */
515 cd9660_add_dot_records(real_root);
516
517 cd9660_setup_root_node();
518
519 if (diskStructure.verbose_level > 0)
520 printf("cd9660_makefs: done converting tree\n");
521
522 /* non-SUSP extensions */
523 if (diskStructure.archimedes_enabled)
524 archimedes_convert_tree(diskStructure.rootNode);
525
526 /* Rock ridge / SUSP init pass */
527 if (diskStructure.rock_ridge_enabled) {
528 cd9660_susp_initialize(diskStructure.rootNode,
529 diskStructure.rootNode, NULL);
530 }
531
532 /* Build path table structure */
533 diskStructure.pathTableLength = cd9660_generate_path_table();
534
535 pathTableSectors = CD9660_BLOCKS(diskStructure.sectorSize,
536 diskStructure.pathTableLength);
537
538 firstAvailableSector = cd9660_setup_volume_descriptors();
539 if (diskStructure.is_bootable) {
540 firstAvailableSector = cd9660_setup_boot(firstAvailableSector);
541 if (firstAvailableSector < 0)
542 errx(1, "setup_boot failed");
543 }
544 /* LE first, then BE */
545 diskStructure.primaryLittleEndianTableSector = firstAvailableSector;
546 diskStructure.primaryBigEndianTableSector =
547 diskStructure.primaryLittleEndianTableSector + pathTableSectors;
548
549 /* Set the secondary ones to -1, not going to use them for now */
550 diskStructure.secondaryBigEndianTableSector = -1;
551 diskStructure.secondaryLittleEndianTableSector = -1;
552
553 diskStructure.dataFirstSector =
554 diskStructure.primaryBigEndianTableSector + pathTableSectors;
555 if (diskStructure.verbose_level > 0)
556 printf("cd9660_makefs: Path table conversion complete. "
557 "Each table is %i bytes, or %" PRIu64 " sectors.\n",
558 diskStructure.pathTableLength, pathTableSectors);
559
560 startoffset = diskStructure.sectorSize*diskStructure.dataFirstSector;
561
562 totalSpace = cd9660_compute_offsets(real_root, startoffset);
563
564 diskStructure.totalSectors = diskStructure.dataFirstSector +
565 CD9660_BLOCKS(diskStructure.sectorSize, totalSpace);
566
567 /* Disabled until pass 1 is done */
568 if (diskStructure.rock_ridge_enabled) {
569 diskStructure.susp_continuation_area_start_sector =
570 diskStructure.totalSectors;
571 diskStructure.totalSectors +=
572 CD9660_BLOCKS(diskStructure.sectorSize,
573 diskStructure.susp_continuation_area_size);
574 cd9660_susp_finalize(diskStructure.rootNode);
575 }
576
577
578 cd9660_finalize_PVD();
579
580 /* Add padding sectors, just for testing purposes right now */
581 /* diskStructure.totalSectors+=150; */
582
583 /* Debugging output */
584 if (diskStructure.verbose_level > 0) {
585 printf("cd9660_makefs: Sectors 0-15 reserved\n");
586 printf("cd9660_makefs: Primary path tables starts in sector %"
587 PRId64 "\n", diskStructure.primaryLittleEndianTableSector);
588 printf("cd9660_makefs: File data starts in sector %"
589 PRId64 "\n", diskStructure.dataFirstSector);
590 printf("cd9660_makefs: Total sectors: %"
591 PRId64 "\n", diskStructure.totalSectors);
592 }
593
594 /*
595 * Add padding sectors at the end
596 * TODO: Clean this up and separate padding
597 */
598 if (diskStructure.include_padding_areas)
599 diskStructure.totalSectors += 150;
600
601 cd9660_write_image(image);
602
603 if (diskStructure.verbose_level > 1) {
604 debug_print_volume_descriptor_information();
605 debug_print_tree(real_root,0);
606 debug_print_path_tree(real_root);
607 }
608
609 /* Clean up data structures */
610 cd9660_free_structure(real_root);
611
612 if (diskStructure.verbose_level > 0)
613 printf("cd9660_makefs: done\n");
614 }
615
616 /* Generic function pointer - implement later */
617 typedef int (*cd9660node_func)(cd9660node *);
618
619 static void
cd9660_finalize_PVD(void)620 cd9660_finalize_PVD(void)
621 {
622 time_t tim;
623
624 /* root should be a fixed size of 34 bytes since it has no name */
625 memcpy(diskStructure.primaryDescriptor.root_directory_record,
626 diskStructure.rootNode->dot_record->isoDirRecord, 34);
627
628 /* In RRIP, this might be longer than 34 */
629 diskStructure.primaryDescriptor.root_directory_record[0] = 34;
630
631 /* Set up all the important numbers in the PVD */
632 cd9660_bothendian_dword(diskStructure.totalSectors,
633 (unsigned char *)diskStructure.primaryDescriptor.volume_space_size);
634 cd9660_bothendian_word(1,
635 (unsigned char *)diskStructure.primaryDescriptor.volume_set_size);
636 cd9660_bothendian_word(1,
637 (unsigned char *)
638 diskStructure.primaryDescriptor.volume_sequence_number);
639 cd9660_bothendian_word(diskStructure.sectorSize,
640 (unsigned char *)
641 diskStructure.primaryDescriptor.logical_block_size);
642 cd9660_bothendian_dword(diskStructure.pathTableLength,
643 (unsigned char *)diskStructure.primaryDescriptor.path_table_size);
644
645 cd9660_731(diskStructure.primaryLittleEndianTableSector,
646 (u_char *)diskStructure.primaryDescriptor.type_l_path_table);
647 cd9660_732(diskStructure.primaryBigEndianTableSector,
648 (u_char *)diskStructure.primaryDescriptor.type_m_path_table);
649
650 diskStructure.primaryDescriptor.file_structure_version[0] = 1;
651
652 /* Pad all strings with spaces instead of nulls */
653 cd9660_pad_string_spaces(diskStructure.primaryDescriptor.volume_id, 32);
654 cd9660_pad_string_spaces(diskStructure.primaryDescriptor.system_id, 32);
655 cd9660_pad_string_spaces(diskStructure.primaryDescriptor.volume_set_id,
656 128);
657 cd9660_pad_string_spaces(diskStructure.primaryDescriptor.publisher_id,
658 128);
659 cd9660_pad_string_spaces(diskStructure.primaryDescriptor.preparer_id,
660 128);
661 cd9660_pad_string_spaces(diskStructure.primaryDescriptor.application_id,
662 128);
663 cd9660_pad_string_spaces(
664 diskStructure.primaryDescriptor.copyright_file_id, 37);
665 cd9660_pad_string_spaces(
666 diskStructure.primaryDescriptor.abstract_file_id, 37);
667 cd9660_pad_string_spaces(
668 diskStructure.primaryDescriptor.bibliographic_file_id, 37);
669
670 /* Setup dates */
671 time(&tim);
672 cd9660_time_8426(
673 (unsigned char *)diskStructure.primaryDescriptor.creation_date,
674 tim);
675 cd9660_time_8426(
676 (unsigned char *)diskStructure.primaryDescriptor.modification_date,
677 tim);
678
679 /*
680 cd9660_set_date(diskStructure.primaryDescriptor.expiration_date, now);
681 */
682
683 memset(diskStructure.primaryDescriptor.expiration_date, '0', 16);
684 diskStructure.primaryDescriptor.expiration_date[16] = 0;
685 cd9660_time_8426(
686 (unsigned char *)diskStructure.primaryDescriptor.effective_date,
687 tim);
688 }
689
690 static void
cd9660_populate_iso_dir_record(struct _iso_directory_record_cd9660 * record,u_char ext_attr_length,u_char flags,u_char name_len,const char * name)691 cd9660_populate_iso_dir_record(struct _iso_directory_record_cd9660 *record,
692 u_char ext_attr_length, u_char flags,
693 u_char name_len, const char * name)
694 {
695 record->ext_attr_length[0] = ext_attr_length;
696 record->flags[0] = ISO_FLAG_CLEAR | flags;
697 record->file_unit_size[0] = 0;
698 record->interleave[0] = 0;
699 cd9660_bothendian_word(1, record->volume_sequence_number);
700 record->name_len[0] = name_len;
701 memset(record->name, '\0', sizeof (record->name));
702 memcpy(record->name, name, name_len);
703 record->length[0] = 33 + name_len;
704
705 /* Todo : better rounding */
706 record->length[0] += (record->length[0] & 1) ? 1 : 0;
707 }
708
709 static void
cd9660_setup_root_node(void)710 cd9660_setup_root_node(void)
711 {
712 cd9660_populate_iso_dir_record(diskStructure.rootNode->isoDirRecord,
713 0, ISO_FLAG_DIRECTORY, 1, "\0");
714
715 }
716
717 /*********** SUPPORT FUNCTIONS ***********/
718 static int
cd9660_setup_volume_descriptors(void)719 cd9660_setup_volume_descriptors(void)
720 {
721 /* Boot volume descriptor should come second */
722 int sector = 16;
723 /* For now, a fixed 2 : PVD and terminator */
724 volume_descriptor *temp, *t;
725
726 /* Set up the PVD */
727 if ((temp = malloc(sizeof(volume_descriptor))) == NULL) {
728 CD9660_MEM_ALLOC_ERROR("cd9660_setup_volume_descriptors");
729 exit(1);
730 }
731
732 temp->volumeDescriptorData =
733 (unsigned char *)&diskStructure.primaryDescriptor;
734 temp->volumeDescriptorData[0] = ISO_VOLUME_DESCRIPTOR_PVD;
735 temp->volumeDescriptorData[6] = 1;
736 temp->sector = sector;
737 memcpy(temp->volumeDescriptorData + 1,
738 ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5);
739 diskStructure.firstVolumeDescriptor = temp;
740
741 sector++;
742 /* Set up boot support if enabled. BVD must reside in sector 17 */
743 if (diskStructure.is_bootable) {
744 if ((t = malloc(sizeof(volume_descriptor))) == NULL) {
745 CD9660_MEM_ALLOC_ERROR(
746 "cd9660_setup_volume_descriptors");
747 exit(1);
748 }
749 if ((t->volumeDescriptorData = malloc(2048)) == NULL) {
750 CD9660_MEM_ALLOC_ERROR(
751 "cd9660_setup_volume_descriptors");
752 exit(1);
753 }
754 temp->next = t;
755 temp = t;
756 memset(t->volumeDescriptorData, 0, 2048);
757 t->sector = 17;
758 if (diskStructure.verbose_level > 0)
759 printf("Setting up boot volume descriptor\n");
760 cd9660_setup_boot_volume_descriptor(t);
761 sector++;
762 }
763
764 /* Set up the terminator */
765 if ((t = malloc(sizeof(volume_descriptor))) == NULL) {
766 CD9660_MEM_ALLOC_ERROR("cd9660_setup_volume_descriptors");
767 exit(1);
768 }
769 if ((t->volumeDescriptorData = malloc(2048)) == NULL) {
770 CD9660_MEM_ALLOC_ERROR("cd9660_setup_volume_descriptors");
771 exit(1);
772 }
773
774 temp->next = t;
775 memset(t->volumeDescriptorData, 0, 2048);
776 t->volumeDescriptorData[0] = ISO_VOLUME_DESCRIPTOR_TERMINATOR;
777 t->next = 0;
778 t->volumeDescriptorData[6] = 1;
779 t->sector = sector;
780 memcpy(t->volumeDescriptorData + 1,
781 ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5);
782
783 sector++;
784 return sector;
785 }
786
787 #if 0
788 /*
789 * Populate EAR at some point. Not required, but is used by NetBSD's
790 * cd9660 support
791 */
792 static int
793 cd9660_fill_extended_attribute_record(cd9660node *node)
794 {
795 if ((node->isoExtAttributes =
796 malloc(sizeof(struct iso_extended_attributes))) == NULL) {
797 CD9660_MEM_ALLOC_ERROR("cd9660_fill_extended_attribute_record");
798 exit(1);
799 };
800
801 return 1;
802 }
803 #endif
804
805 static int
cd9660_translate_node_common(cd9660node * newnode)806 cd9660_translate_node_common(cd9660node *newnode)
807 {
808 time_t tim;
809 int test;
810 u_char flag;
811 char temp[ISO_FILENAME_MAXLENGTH_WITH_PADDING];
812
813 /* Now populate the isoDirRecord structure */
814 memset(temp, 0, ISO_FILENAME_MAXLENGTH_WITH_PADDING);
815
816 test = cd9660_convert_filename(newnode->node->name,
817 temp, !(S_ISDIR(newnode->node->type)));
818
819 flag = ISO_FLAG_CLEAR;
820 if (S_ISDIR(newnode->node->type))
821 flag |= ISO_FLAG_DIRECTORY;
822
823 cd9660_populate_iso_dir_record(newnode->isoDirRecord, 0,
824 flag, strlen(temp), temp);
825
826 /* Set the various dates */
827
828 /* If we want to use the current date and time */
829 time(&tim);
830
831 cd9660_time_915(newnode->isoDirRecord->date, tim);
832
833 cd9660_bothendian_dword(newnode->fileDataLength,
834 newnode->isoDirRecord->size);
835 /* If the file is a link, we want to set the size to 0 */
836 if (S_ISLNK(newnode->node->type))
837 newnode->fileDataLength = 0;
838
839 return 1;
840 }
841
842 /*
843 * Translate fsnode to cd9660node
844 * Translate filenames and other metadata, including dates, sizes,
845 * permissions, etc
846 * @param struct fsnode * The node generated by makefs
847 * @param struct cd9660node * The intermediate node to be written to
848 * @returns int 0 on failure, 1 on success
849 */
850 static int
cd9660_translate_node(fsnode * node,cd9660node * newnode)851 cd9660_translate_node(fsnode *node, cd9660node *newnode)
852 {
853 if (node == NULL) {
854 if (diskStructure.verbose_level > 0)
855 printf("cd9660_translate_node: NULL node passed, "
856 "returning\n");
857 return 0;
858 }
859 if ((newnode->isoDirRecord =
860 malloc(sizeof(iso_directory_record_cd9660))) == NULL) {
861 CD9660_MEM_ALLOC_ERROR("cd9660_translate_node");
862 return 0;
863 }
864
865 /* Set the node pointer */
866 newnode->node = node;
867
868 /* Set the size */
869 if (!(S_ISDIR(node->type)))
870 newnode->fileDataLength = node->inode->st.st_size;
871
872 if (cd9660_translate_node_common(newnode) == 0)
873 return 0;
874
875 /* Finally, overwrite some of the values that are set by default */
876 cd9660_time_915(newnode->isoDirRecord->date, node->inode->st.st_mtime);
877
878 return 1;
879 }
880
881 /*
882 * Compares two ISO filenames
883 * @param const char * The first file name
884 * @param const char * The second file name
885 * @returns : -1 if first is less than second, 0 if they are the same, 1 if
886 * the second is greater than the first
887 */
888 static int
cd9660_compare_filename(const char * first,const char * second)889 cd9660_compare_filename(const char *first, const char *second)
890 {
891 /*
892 * This can be made more optimal once it has been tested
893 * (the extra character, for example, is for testing)
894 */
895
896 int p1 = 0;
897 int p2 = 0;
898 char c1, c2;
899 /* First, on the filename */
900
901 while (p1 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION-1
902 && p2 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION-1) {
903 c1 = first[p1];
904 c2 = second[p2];
905 if (c1 == '.' && c2 =='.')
906 break;
907 else if (c1 == '.') {
908 p2++;
909 c1 = ' ';
910 } else if (c2 == '.') {
911 p1++;
912 c2 = ' ';
913 } else {
914 p1++;
915 p2++;
916 }
917
918 if (c1 < c2)
919 return -1;
920 else if (c1 > c2) {
921 return 1;
922 }
923 }
924
925 if (first[p1] == '.' && second[p2] == '.') {
926 p1++;
927 p2++;
928 while (p1 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION - 1
929 && p2 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION - 1) {
930 c1 = first[p1];
931 c2 = second[p2];
932 if (c1 == ';' && c2 == ';')
933 break;
934 else if (c1 == ';') {
935 p2++;
936 c1 = ' ';
937 } else if (c2 == ';') {
938 p1++;
939 c2 = ' ';
940 } else {
941 p1++;
942 p2++;
943 }
944
945 if (c1 < c2)
946 return -1;
947 else if (c1 > c2)
948 return 1;
949 }
950 }
951 return 0;
952 }
953
954 /*
955 * Insert a node into list with ISO sorting rules
956 * @param cd9660node * The head node of the list
957 * @param cd9660node * The node to be inserted
958 */
959 static void
cd9660_sorted_child_insert(cd9660node * parent,cd9660node * cn_new)960 cd9660_sorted_child_insert(cd9660node *parent, cd9660node *cn_new)
961 {
962 int compare;
963 cd9660node *cn;
964 struct cd9660_children_head *head = &parent->cn_children;
965
966 /* TODO: Optimize? */
967 cn_new->parent = parent;
968
969 /*
970 * first will either be 0, the . or the ..
971 * if . or .., this means no other entry may be written before first
972 * if 0, the new node may be inserted at the head
973 */
974
975 TAILQ_FOREACH(cn, head, cn_next_child) {
976 /*
977 * Dont insert a node twice -
978 * that would cause an infinite loop
979 */
980 if (cn_new == cn)
981 return;
982
983 compare = cd9660_compare_filename(cn_new->isoDirRecord->name,
984 cn->isoDirRecord->name);
985
986 if (compare == 0)
987 compare = cd9660_compare_filename(cn_new->node->name,
988 cn->node->name);
989
990 if (compare < 0)
991 break;
992 }
993 if (cn == NULL)
994 TAILQ_INSERT_TAIL(head, cn_new, cn_next_child);
995 else
996 TAILQ_INSERT_BEFORE(cn, cn_new, cn_next_child);
997 }
998
999 /*
1000 * Called After cd9660_sorted_child_insert
1001 * handles file collisions by suffixing each filname with ~n
1002 * where n represents the files respective place in the ordering
1003 */
1004 static int
cd9660_handle_collisions(cd9660node * colliding,int past)1005 cd9660_handle_collisions(cd9660node *colliding, int past)
1006 {
1007 cd9660node *iter, *next, *prev;
1008 int skip;
1009 int delete_chars = 0;
1010 int temp_past = past;
1011 int temp_skip;
1012 int flag = 0;
1013 cd9660node *end_of_range;
1014
1015 for (iter = TAILQ_FIRST(&colliding->cn_children);
1016 iter != NULL && (next = TAILQ_NEXT(iter, cn_next_child)) != NULL;) {
1017 if (strcmp(iter->isoDirRecord->name,
1018 next->isoDirRecord->name) != 0) {
1019 iter = TAILQ_NEXT(iter, cn_next_child);
1020 continue;
1021 }
1022 flag = 1;
1023 temp_skip = skip = cd9660_count_collisions(iter);
1024 end_of_range = iter;
1025 while (temp_skip > 0) {
1026 temp_skip--;
1027 end_of_range = TAILQ_NEXT(end_of_range, cn_next_child);
1028 }
1029 temp_past = past;
1030 while (temp_past > 0) {
1031 if ((next = TAILQ_NEXT(end_of_range, cn_next_child)) != NULL)
1032 end_of_range = next;
1033 else if ((prev = TAILQ_PREV(iter, cd9660_children_head, cn_next_child)) != NULL)
1034 iter = prev;
1035 else
1036 delete_chars++;
1037 temp_past--;
1038 }
1039 skip += past;
1040 iter = cd9660_rename_filename(iter, skip, delete_chars);
1041 }
1042 return flag;
1043 }
1044
1045
1046 static cd9660node *
cd9660_rename_filename(cd9660node * iter,int num,int delete_chars)1047 cd9660_rename_filename(cd9660node *iter, int num, int delete_chars)
1048 {
1049 int i = 0;
1050 int numbts, digit, digits, temp, powers, count;
1051 char *naming;
1052 int maxlength;
1053 char *tmp;
1054
1055 if (diskStructure.verbose_level > 0)
1056 printf("Rename_filename called\n");
1057
1058 assert(1 <= diskStructure.isoLevel && diskStructure.isoLevel <= 2);
1059 /* TODO : A LOT of chanes regarding 8.3 filenames */
1060 if (diskStructure.isoLevel == 1)
1061 maxlength = 8;
1062 else if (diskStructure.isoLevel == 2)
1063 maxlength = 31;
1064 else
1065 maxlength = ISO_FILENAME_MAXLENGTH_BEFORE_VERSION;
1066
1067 tmp = malloc(ISO_FILENAME_MAXLENGTH_WITH_PADDING);
1068
1069 while (i < num && iter) {
1070 powers = 1;
1071 count = 0;
1072 digits = 1;
1073 while (((int)(i / powers) ) >= 10) {
1074 digits++;
1075 powers = powers * 10;
1076 }
1077
1078 naming = iter->o_name;
1079
1080 /*
1081 while ((*naming != '.') && (*naming != ';')) {
1082 naming++;
1083 count++;
1084 }
1085 */
1086
1087 while (count < maxlength) {
1088 if (*naming == ';')
1089 break;
1090 naming++;
1091 count++;
1092 }
1093
1094 if ((count + digits) < maxlength)
1095 numbts = count;
1096 else
1097 numbts = maxlength - (digits);
1098 numbts -= delete_chars;
1099
1100 /* 8.3 rules - keep the extension, add before the dot */
1101
1102 /*
1103 * This code makes a bunch of assumptions.
1104 * See if you can spot them all :)
1105 */
1106
1107 /*
1108 if (diskStructure.isoLevel == 1) {
1109 numbts = 8 - digits - delete_chars;
1110 if (dot < 0) {
1111
1112 } else {
1113 if (dot < 8) {
1114 memmove(&tmp[numbts],&tmp[dot],4);
1115 }
1116 }
1117 }
1118 */
1119
1120 /* (copying just the filename before the '.' */
1121 memcpy(tmp, (iter->o_name), numbts);
1122
1123 /* adding the appropriate number following the name */
1124 temp = i;
1125 while (digits > 0) {
1126 digit = (int)(temp / powers);
1127 temp = temp - digit * powers;
1128 sprintf(&tmp[numbts] , "%d", digit);
1129 digits--;
1130 numbts++;
1131 powers = powers / 10;
1132 }
1133
1134 while ((*naming != ';') && (numbts < maxlength)) {
1135 tmp[numbts] = (*naming);
1136 naming++;
1137 numbts++;
1138 }
1139
1140 tmp[numbts] = ';';
1141 tmp[numbts+1] = '1';
1142 tmp[numbts+2] = '\0';
1143
1144 /*
1145 * now tmp has exactly the identifier
1146 * we want so we'll copy it back to record
1147 */
1148 memcpy((iter->isoDirRecord->name), tmp, numbts + 3);
1149
1150 iter = TAILQ_NEXT(iter, cn_next_child);
1151 i++;
1152 }
1153
1154 free(tmp);
1155 return iter;
1156 }
1157
1158 /* Todo: Figure out why these functions are nec. */
1159 static void
cd9660_copy_filenames(cd9660node * node)1160 cd9660_copy_filenames(cd9660node *node)
1161 {
1162 cd9660node *cn;
1163
1164 if (TAILQ_EMPTY(&node->cn_children))
1165 return;
1166
1167 if (TAILQ_FIRST(&node->cn_children)->isoDirRecord == NULL) {
1168 debug_print_tree(diskStructure.rootNode, 0);
1169 exit(1);
1170 }
1171
1172 TAILQ_FOREACH(cn, &node->cn_children, cn_next_child) {
1173 cd9660_copy_filenames(cn);
1174 memcpy(cn->o_name, cn->isoDirRecord->name,
1175 ISO_FILENAME_MAXLENGTH_WITH_PADDING);
1176 }
1177 }
1178
1179 static void
cd9660_sorting_nodes(cd9660node * node)1180 cd9660_sorting_nodes(cd9660node *node)
1181 {
1182 cd9660node *cn;
1183
1184 TAILQ_FOREACH(cn, &node->cn_children, cn_next_child)
1185 cd9660_sorting_nodes(cn);
1186 cd9660_sort_nodes(node);
1187 }
1188
1189 /* XXX Bubble sort. */
1190 static void
cd9660_sort_nodes(cd9660node * node)1191 cd9660_sort_nodes(cd9660node *node)
1192 {
1193 cd9660node *cn, *next;
1194
1195 do {
1196 TAILQ_FOREACH(cn, &node->cn_children, cn_next_child) {
1197 if ((next = TAILQ_NEXT(cn, cn_next_child)) == NULL)
1198 return;
1199 else if (strcmp(next->isoDirRecord->name,
1200 cn->isoDirRecord->name) >= 0)
1201 continue;
1202 TAILQ_REMOVE(&node->cn_children, next, cn_next_child);
1203 TAILQ_INSERT_BEFORE(cn, next, cn_next_child);
1204 break;
1205 }
1206 } while (cn != NULL);
1207 }
1208
1209 static int
cd9660_count_collisions(cd9660node * copy)1210 cd9660_count_collisions(cd9660node *copy)
1211 {
1212 int count = 0;
1213 cd9660node *iter, *next;
1214
1215 for (iter = copy;
1216 (next = TAILQ_NEXT(iter, cn_next_child)) != NULL;
1217 iter = next) {
1218 if (cd9660_compare_filename(iter->isoDirRecord->name,
1219 next->isoDirRecord->name) == 0)
1220 count++;
1221 else
1222 return count;
1223 }
1224 #if 0
1225 if ((next = TAILQ_NEXT(iter, cn_next_child)) != NULL) {
1226 printf("cd9660_recurse_on_collision: count is %i \n", count);
1227 compare = cd9660_compare_filename(iter->isoDirRecord->name,
1228 next->isoDirRecord->name);
1229 if (compare == 0) {
1230 count++;
1231 return cd9660_recurse_on_collision(next, count);
1232 } else
1233 return count;
1234 }
1235 #endif
1236 return count;
1237 }
1238
1239 static cd9660node *
cd9660_rrip_move_directory(cd9660node * dir)1240 cd9660_rrip_move_directory(cd9660node *dir)
1241 {
1242 char newname[9];
1243 cd9660node *tfile;
1244
1245 /*
1246 * This function needs to:
1247 * 1) Create an empty virtual file in place of the old directory
1248 * 2) Point the virtual file to the new directory
1249 * 3) Point the relocated directory to its old parent
1250 * 4) Move the directory specified by dir into rr_moved_dir,
1251 * and rename it to "diskStructure.rock_ridge_move_count" (as a string)
1252 */
1253
1254 /* First see if the moved directory even exists */
1255 if (diskStructure.rr_moved_dir == NULL) {
1256 diskStructure.rr_moved_dir =
1257 cd9660_create_directory(ISO_RRIP_DEFAULT_MOVE_DIR_NAME,
1258 diskStructure.rootNode, dir);
1259 if (diskStructure.rr_moved_dir == NULL)
1260 return 0;
1261 }
1262
1263 /* Create a file with the same ORIGINAL name */
1264 tfile = cd9660_create_file(dir->node->name, dir->parent, dir);
1265 if (tfile == NULL)
1266 return NULL;
1267
1268 diskStructure.rock_ridge_move_count++;
1269 snprintf(newname, sizeof(newname), "%08i",
1270 diskStructure.rock_ridge_move_count);
1271
1272 /* Point to old parent */
1273 dir->rr_real_parent = dir->parent;
1274
1275 /* Place the placeholder file */
1276 if (TAILQ_EMPTY(&dir->rr_real_parent->cn_children)) {
1277 TAILQ_INSERT_HEAD(&dir->rr_real_parent->cn_children, tfile,
1278 cn_next_child);
1279 } else {
1280 cd9660_sorted_child_insert(dir->rr_real_parent, tfile);
1281 }
1282
1283 /* Point to new parent */
1284 dir->parent = diskStructure.rr_moved_dir;
1285
1286 /* Point the file to the moved directory */
1287 tfile->rr_relocated = dir;
1288
1289 /* Actually move the directory */
1290 cd9660_sorted_child_insert(diskStructure.rr_moved_dir, dir);
1291
1292 /* TODO: Inherit permissions / ownership (basically the entire inode) */
1293
1294 /* Set the new name */
1295 memset(dir->isoDirRecord->name, 0, ISO_FILENAME_MAXLENGTH_WITH_PADDING);
1296 strncpy(dir->isoDirRecord->name, newname, 8);
1297 dir->isoDirRecord->length[0] = 34 + 8;
1298 dir->isoDirRecord->name_len[0] = 8;
1299
1300 return dir;
1301 }
1302
1303 static int
cd9660_add_dot_records(cd9660node * root)1304 cd9660_add_dot_records(cd9660node *root)
1305 {
1306 struct cd9660_children_head *head = &root->cn_children;
1307 cd9660node *cn;
1308
1309 TAILQ_FOREACH(cn, head, cn_next_child) {
1310 if ((cn->type & CD9660_TYPE_DIR) == 0)
1311 continue;
1312 /* Recursion first */
1313 cd9660_add_dot_records(cn);
1314 }
1315 cd9660_create_special_directory(CD9660_TYPE_DOT, root);
1316 cd9660_create_special_directory(CD9660_TYPE_DOTDOT, root);
1317 return 1;
1318 }
1319
1320 /*
1321 * Convert node to cd9660 structure
1322 * This function is designed to be called recursively on the root node of
1323 * the filesystem
1324 * Lots of recursion going on here, want to make sure it is efficient
1325 * @param struct fsnode * The root node to be converted
1326 * @param struct cd9660* The parent node (should not be NULL)
1327 * @param int Current directory depth
1328 * @param int* Running count of the number of directories that are being created
1329 */
1330 static void
cd9660_convert_structure(fsnode * root,cd9660node * parent_node,int level,int * numDirectories,int * error)1331 cd9660_convert_structure(fsnode *root, cd9660node *parent_node, int level,
1332 int *numDirectories, int *error)
1333 {
1334 fsnode *iterator = root;
1335 cd9660node *this_node;
1336 int working_level;
1337 int add;
1338 int flag = 0;
1339 int counter = 0;
1340
1341 /*
1342 * Newer, more efficient method, reduces recursion depth
1343 */
1344 if (root == NULL) {
1345 warnx("%s: root is null\n", __func__);
1346 return;
1347 }
1348
1349 /* Test for an empty directory - makefs still gives us the . record */
1350 if ((S_ISDIR(root->type)) && (root->name[0] == '.')
1351 && (root->name[1] == '\0')) {
1352 root = root->next;
1353 if (root == NULL)
1354 return;
1355 }
1356 if ((this_node = cd9660_allocate_cd9660node()) == NULL) {
1357 CD9660_MEM_ALLOC_ERROR(__func__);
1358 }
1359
1360 /*
1361 * To reduce the number of recursive calls, we will iterate over
1362 * the next pointers to the right.
1363 */
1364 while (iterator != NULL) {
1365 add = 1;
1366 /*
1367 * Increment the directory count if this is a directory
1368 * Ignore "." entries. We will generate them later
1369 */
1370 if (!S_ISDIR(iterator->type) ||
1371 strcmp(iterator->name, ".") != 0) {
1372
1373 /* Translate the node, including its filename */
1374 this_node->parent = parent_node;
1375 cd9660_translate_node(iterator, this_node);
1376 this_node->level = level;
1377
1378 if (S_ISDIR(iterator->type)) {
1379 (*numDirectories)++;
1380 this_node->type = CD9660_TYPE_DIR;
1381 working_level = level + 1;
1382
1383 /*
1384 * If at level 8, directory would be at 8
1385 * and have children at 9 which is not
1386 * allowed as per ISO spec
1387 */
1388 if (level == 8) {
1389 if ((!diskStructure.allow_deep_trees) &&
1390 (!diskStructure.rock_ridge_enabled)) {
1391 warnx("error: found entry "
1392 "with depth greater "
1393 "than 8.");
1394 (*error) = 1;
1395 return;
1396 } else if (diskStructure.
1397 rock_ridge_enabled) {
1398 working_level = 3;
1399 /*
1400 * Moved directory is actually
1401 * at level 2.
1402 */
1403 this_node->level =
1404 working_level - 1;
1405 if (cd9660_rrip_move_directory(
1406 this_node) == 0) {
1407 warnx("Failure in "
1408 "cd9660_rrip_"
1409 "move_directory"
1410 );
1411 (*error) = 1;
1412 return;
1413 }
1414 add = 0;
1415 }
1416 }
1417
1418 /* Do the recursive call on the children */
1419 if (iterator->child != 0) {
1420 cd9660_convert_structure(
1421 iterator->child, this_node,
1422 working_level,
1423 numDirectories, error);
1424
1425 if ((*error) == 1) {
1426 warnx("%s: Error on recursive "
1427 "call", __func__);
1428 return;
1429 }
1430 }
1431
1432 } else {
1433 /* Only directories should have children */
1434 assert(iterator->child == NULL);
1435
1436 this_node->type = CD9660_TYPE_FILE;
1437 }
1438
1439 /*
1440 * Finally, do a sorted insert
1441 */
1442 if (add) {
1443 cd9660_sorted_child_insert(
1444 parent_node, this_node);
1445 }
1446
1447 /*Allocate new temp_node */
1448 if (iterator->next != 0) {
1449 this_node = cd9660_allocate_cd9660node();
1450 if (this_node == NULL)
1451 CD9660_MEM_ALLOC_ERROR(__func__);
1452 }
1453 }
1454 iterator = iterator->next;
1455 }
1456
1457 /* cd9660_handle_collisions(first_node); */
1458
1459 /* TODO: need cleanup */
1460 cd9660_copy_filenames(parent_node);
1461
1462 do {
1463 flag = cd9660_handle_collisions(parent_node, counter);
1464 counter++;
1465 cd9660_sorting_nodes(parent_node);
1466 } while ((flag == 1) && (counter < 100));
1467 }
1468
1469 /*
1470 * Clean up the cd9660node tree
1471 * This is designed to be called recursively on the root node
1472 * @param struct cd9660node *root The node to free
1473 * @returns void
1474 */
1475 static void
cd9660_free_structure(cd9660node * root)1476 cd9660_free_structure(cd9660node *root)
1477 {
1478 cd9660node *cn;
1479
1480 while ((cn = TAILQ_FIRST(&root->cn_children)) != NULL) {
1481 TAILQ_REMOVE(&root->cn_children, cn, cn_next_child);
1482 cd9660_free_structure(cn);
1483 }
1484 free(root);
1485 }
1486
1487 /*
1488 * Be a little more memory conservative:
1489 * instead of having the TAILQ_ENTRY as part of the cd9660node,
1490 * just create a temporary structure
1491 */
1492 struct ptq_entry
1493 {
1494 TAILQ_ENTRY(ptq_entry) ptq;
1495 cd9660node *node;
1496 } *n;
1497
1498 #define PTQUEUE_NEW(n,s,r,t){\
1499 n = malloc(sizeof(struct s)); \
1500 if (n == NULL) \
1501 return r; \
1502 n->node = t;\
1503 }
1504
1505 /*
1506 * Generate the path tables
1507 * The specific implementation of this function is left as an exercise to the
1508 * programmer. It could be done recursively. Make sure you read how the path
1509 * table has to be laid out, it has levels.
1510 * @param struct iso9660_disk *disk The disk image
1511 * @returns int The number of built path tables (between 1 and 4), 0 on failure
1512 */
1513 static int
cd9660_generate_path_table(void)1514 cd9660_generate_path_table(void)
1515 {
1516 cd9660node *cn, *dirNode = diskStructure.rootNode;
1517 cd9660node *last = dirNode;
1518 int pathTableSize = 0; /* computed as we go */
1519 int counter = 1; /* root gets a count of 0 */
1520
1521 TAILQ_HEAD(cd9660_pt_head, ptq_entry) pt_head;
1522 TAILQ_INIT(&pt_head);
1523
1524 PTQUEUE_NEW(n, ptq_entry, -1, diskStructure.rootNode);
1525
1526 /* Push the root node */
1527 TAILQ_INSERT_HEAD(&pt_head, n, ptq);
1528
1529 /* Breadth-first traversal of file structure */
1530 while (pt_head.tqh_first != 0) {
1531 n = pt_head.tqh_first;
1532 dirNode = n->node;
1533 TAILQ_REMOVE(&pt_head, pt_head.tqh_first, ptq);
1534 free(n);
1535
1536 /* Update the size */
1537 pathTableSize += ISO_PATHTABLE_ENTRY_BASESIZE
1538 + dirNode->isoDirRecord->name_len[0]+
1539 (dirNode->isoDirRecord->name_len[0] % 2 == 0 ? 0 : 1);
1540 /* includes the padding bit */
1541
1542 dirNode->ptnumber=counter;
1543 if (dirNode != last) {
1544 last->ptnext = dirNode;
1545 dirNode->ptprev = last;
1546 }
1547 last = dirNode;
1548
1549 /* Push children onto queue */
1550 TAILQ_FOREACH(cn, &dirNode->cn_children, cn_next_child) {
1551 /*
1552 * Dont add the DOT and DOTDOT types to the path
1553 * table.
1554 */
1555 if ((cn->type != CD9660_TYPE_DOT)
1556 && (cn->type != CD9660_TYPE_DOTDOT)) {
1557
1558 if (S_ISDIR(cn->node->type)) {
1559 PTQUEUE_NEW(n, ptq_entry, -1, cn);
1560 TAILQ_INSERT_TAIL(&pt_head, n, ptq);
1561 }
1562 }
1563 }
1564 counter++;
1565 }
1566 return pathTableSize;
1567 }
1568
1569 void
cd9660_compute_full_filename(cd9660node * node,char * buf)1570 cd9660_compute_full_filename(cd9660node *node, char *buf)
1571 {
1572 int len;
1573
1574 len = CD9660MAXPATH + 1;
1575 len = snprintf(buf, len, "%s/%s/%s", node->node->root,
1576 node->node->path, node->node->name);
1577 if (len > CD9660MAXPATH)
1578 errx(1, "Pathname too long.");
1579 }
1580
1581 /* NEW filename conversion method */
1582 typedef int(*cd9660_filename_conversion_functor)(const char *, char *, int);
1583
1584
1585 /*
1586 * TODO: These two functions are almost identical.
1587 * Some code cleanup is possible here
1588 *
1589 * XXX bounds checking!
1590 */
1591 static int
cd9660_level1_convert_filename(const char * oldname,char * newname,int is_file)1592 cd9660_level1_convert_filename(const char *oldname, char *newname, int is_file)
1593 {
1594 /*
1595 * ISO 9660 : 10.1
1596 * File Name shall not contain more than 8 d or d1 characters
1597 * File Name Extension shall not contain more than 3 d or d1 characters
1598 * Directory Identifier shall not contain more than 8 d or d1 characters
1599 */
1600 int namelen = 0;
1601 int extlen = 0;
1602 int found_ext = 0;
1603
1604 while (*oldname != '\0' && extlen < 3) {
1605 /* Handle period first, as it is special */
1606 if (*oldname == '.') {
1607 if (found_ext) {
1608 *newname++ = '_';
1609 extlen ++;
1610 }
1611 else {
1612 *newname++ = '.';
1613 found_ext = 1;
1614 }
1615 } else {
1616 /* cut RISC OS file type off ISO name */
1617 if (diskStructure.archimedes_enabled &&
1618 *oldname == ',' && strlen(oldname) == 4)
1619 break;
1620 /* Enforce 12.3 / 8 */
1621 if (namelen == 8 && !found_ext)
1622 break;
1623
1624 if (islower((unsigned char)*oldname))
1625 *newname++ = toupper((unsigned char)*oldname);
1626 else if (isupper((unsigned char)*oldname)
1627 || isdigit((unsigned char)*oldname))
1628 *newname++ = *oldname;
1629 else
1630 *newname++ = '_';
1631
1632 if (found_ext)
1633 extlen++;
1634 else
1635 namelen++;
1636 }
1637 oldname ++;
1638 }
1639 if (is_file) {
1640 if (!found_ext && !diskStructure.omit_trailing_period)
1641 *newname++ = '.';
1642 /* Add version */
1643 sprintf(newname, ";%i", 1);
1644 }
1645 return namelen + extlen + found_ext;
1646 }
1647
1648 /* XXX bounds checking! */
1649 static int
cd9660_level2_convert_filename(const char * oldname,char * newname,int is_file)1650 cd9660_level2_convert_filename(const char *oldname, char *newname, int is_file)
1651 {
1652 /*
1653 * ISO 9660 : 7.5.1
1654 * File name : 0+ d or d1 characters
1655 * separator 1 (.)
1656 * File name extension : 0+ d or d1 characters
1657 * separator 2 (;)
1658 * File version number (5 characters, 1-32767)
1659 * 1 <= Sum of File name and File name extension <= 30
1660 */
1661 int namelen = 0;
1662 int extlen = 0;
1663 int found_ext = 0;
1664
1665 while (*oldname != '\0' && namelen + extlen < 30) {
1666 /* Handle period first, as it is special */
1667 if (*oldname == '.') {
1668 if (found_ext) {
1669 if (diskStructure.allow_multidot) {
1670 *newname++ = '.';
1671 } else {
1672 *newname++ = '_';
1673 }
1674 extlen ++;
1675 }
1676 else {
1677 *newname++ = '.';
1678 found_ext = 1;
1679 }
1680 } else {
1681 /* cut RISC OS file type off ISO name */
1682 if (diskStructure.archimedes_enabled &&
1683 *oldname == ',' && strlen(oldname) == 4)
1684 break;
1685
1686 if (islower((unsigned char)*oldname))
1687 *newname++ = toupper((unsigned char)*oldname);
1688 else if (isupper((unsigned char)*oldname) ||
1689 isdigit((unsigned char)*oldname))
1690 *newname++ = *oldname;
1691 else if (diskStructure.allow_multidot &&
1692 *oldname == '.') {
1693 *newname++ = '.';
1694 } else {
1695 *newname++ = '_';
1696 }
1697
1698 if (found_ext)
1699 extlen++;
1700 else
1701 namelen++;
1702 }
1703 oldname ++;
1704 }
1705 if (is_file) {
1706 if (!found_ext && !diskStructure.omit_trailing_period)
1707 *newname++ = '.';
1708 /* Add version */
1709 sprintf(newname, ";%i", 1);
1710 }
1711 return namelen + extlen + found_ext;
1712 }
1713
1714 #if 0
1715 static int
1716 cd9660_joliet_convert_filename(const char *oldname, char *newname, int is_file)
1717 {
1718 /* TODO: implement later, move to cd9660_joliet.c ?? */
1719 }
1720 #endif
1721
1722
1723 /*
1724 * Convert a file name to ISO compliant file name
1725 * @param char * oldname The original filename
1726 * @param char ** newname The new file name, in the appropriate character
1727 * set and of appropriate length
1728 * @param int 1 if file, 0 if directory
1729 * @returns int The length of the new string
1730 */
1731 static int
cd9660_convert_filename(const char * oldname,char * newname,int is_file)1732 cd9660_convert_filename(const char *oldname, char *newname, int is_file)
1733 {
1734 assert(1 <= diskStructure.isoLevel && diskStructure.isoLevel <= 2);
1735 /* NEW */
1736 cd9660_filename_conversion_functor conversion_function = 0;
1737 if (diskStructure.isoLevel == 1)
1738 conversion_function = &cd9660_level1_convert_filename;
1739 else if (diskStructure.isoLevel == 2)
1740 conversion_function = &cd9660_level2_convert_filename;
1741 return (*conversion_function)(oldname, newname, is_file);
1742 }
1743
1744 int
cd9660_compute_record_size(cd9660node * node)1745 cd9660_compute_record_size(cd9660node *node)
1746 {
1747 int size = node->isoDirRecord->length[0];
1748
1749 if (diskStructure.rock_ridge_enabled)
1750 size += node->susp_entry_size;
1751 size += node->su_tail_size;
1752 size += size & 1; /* Ensure length of record is even. */
1753 assert(size <= 254);
1754 return size;
1755 }
1756
1757 static void
cd9660_populate_dot_records(cd9660node * node)1758 cd9660_populate_dot_records(cd9660node *node)
1759 {
1760 node->dot_record->fileDataSector = node->fileDataSector;
1761 memcpy(node->dot_record->isoDirRecord,node->isoDirRecord, 34);
1762 node->dot_record->isoDirRecord->name_len[0] = 1;
1763 node->dot_record->isoDirRecord->name[0] = 0;
1764 node->dot_record->isoDirRecord->name[1] = 0;
1765 node->dot_record->isoDirRecord->length[0] = 34;
1766 node->dot_record->fileRecordSize =
1767 cd9660_compute_record_size(node->dot_record);
1768
1769 if (node == diskStructure.rootNode) {
1770 node->dot_dot_record->fileDataSector = node->fileDataSector;
1771 memcpy(node->dot_dot_record->isoDirRecord,node->isoDirRecord,
1772 34);
1773 } else {
1774 node->dot_dot_record->fileDataSector =
1775 node->parent->fileDataSector;
1776 memcpy(node->dot_dot_record->isoDirRecord,
1777 node->parent->isoDirRecord,34);
1778 }
1779 node->dot_dot_record->isoDirRecord->name_len[0] = 1;
1780 node->dot_dot_record->isoDirRecord->name[0] = 1;
1781 node->dot_dot_record->isoDirRecord->name[1] = 0;
1782 node->dot_dot_record->isoDirRecord->length[0] = 34;
1783 node->dot_dot_record->fileRecordSize =
1784 cd9660_compute_record_size(node->dot_dot_record);
1785 }
1786
1787 /*
1788 * @param struct cd9660node *node The node
1789 * @param int The offset (in bytes) - SHOULD align to the beginning of a sector
1790 * @returns int The total size of files and directory entries (should be
1791 * a multiple of sector size)
1792 */
1793 static int64_t
cd9660_compute_offsets(cd9660node * node,int64_t startOffset)1794 cd9660_compute_offsets(cd9660node *node, int64_t startOffset)
1795 {
1796 /*
1797 * This function needs to compute the size of directory records and
1798 * runs, file lengths, and set the appropriate variables both in
1799 * cd9660node and isoDirEntry
1800 */
1801 int64_t used_bytes = 0;
1802 int64_t current_sector_usage = 0;
1803 cd9660node *child;
1804 fsinode *inode;
1805 int64_t r;
1806
1807 assert(node != NULL);
1808
1809
1810 /*
1811 * NOTE : There needs to be some special case detection for
1812 * the "real root" node, since for it, node->node is undefined
1813 */
1814
1815 node->fileDataSector = -1;
1816
1817 if (node->type & CD9660_TYPE_DIR) {
1818 node->fileRecordSize = cd9660_compute_record_size(node);
1819 /*Set what sector this directory starts in*/
1820 node->fileDataSector =
1821 CD9660_BLOCKS(diskStructure.sectorSize,startOffset);
1822
1823 cd9660_bothendian_dword(node->fileDataSector,
1824 node->isoDirRecord->extent);
1825
1826 /*
1827 * First loop over children, need to know the size of
1828 * their directory records
1829 */
1830 node->fileSectorsUsed = 1;
1831 TAILQ_FOREACH(child, &node->cn_children, cn_next_child) {
1832 node->fileDataLength +=
1833 cd9660_compute_record_size(child);
1834 if ((cd9660_compute_record_size(child) +
1835 current_sector_usage) >=
1836 diskStructure.sectorSize) {
1837 current_sector_usage = 0;
1838 node->fileSectorsUsed++;
1839 }
1840
1841 current_sector_usage +=
1842 cd9660_compute_record_size(child);
1843 }
1844
1845 cd9660_bothendian_dword(node->fileSectorsUsed *
1846 diskStructure.sectorSize,node->isoDirRecord->size);
1847
1848 /*
1849 * This should point to the sector after the directory
1850 * record (or, the first byte in that sector)
1851 */
1852 used_bytes += node->fileSectorsUsed * diskStructure.sectorSize;
1853
1854 for (child = TAILQ_NEXT(node->dot_dot_record, cn_next_child);
1855 child != NULL; child = TAILQ_NEXT(child, cn_next_child)) {
1856 /* Directories need recursive call */
1857 if (S_ISDIR(child->node->type)) {
1858 r = cd9660_compute_offsets(child,
1859 used_bytes + startOffset);
1860
1861 if (r != -1)
1862 used_bytes += r;
1863 else
1864 return -1;
1865 }
1866 }
1867
1868 /* Explicitly set the . and .. records */
1869 cd9660_populate_dot_records(node);
1870
1871 /* Finally, do another iteration to write the file data*/
1872 for (child = TAILQ_NEXT(node->dot_dot_record, cn_next_child);
1873 child != NULL;
1874 child = TAILQ_NEXT(child, cn_next_child)) {
1875 /* Files need extent set */
1876 if (S_ISDIR(child->node->type))
1877 continue;
1878 child->fileRecordSize =
1879 cd9660_compute_record_size(child);
1880
1881 child->fileSectorsUsed =
1882 CD9660_BLOCKS(diskStructure.sectorSize,
1883 child->fileDataLength);
1884
1885 inode = child->node->inode;
1886 if ((inode->flags & FI_ALLOCATED) == 0) {
1887 inode->ino =
1888 CD9660_BLOCKS(diskStructure.sectorSize,
1889 used_bytes + startOffset);
1890 inode->flags |= FI_ALLOCATED;
1891 used_bytes += child->fileSectorsUsed *
1892 diskStructure.sectorSize;
1893 } else {
1894 INODE_WARNX(("%s: already allocated inode %d "
1895 "data sectors at %" PRIu32, __func__,
1896 (int)inode->st.st_ino, inode->ino));
1897 }
1898 child->fileDataSector = inode->ino;
1899 cd9660_bothendian_dword(child->fileDataSector,
1900 child->isoDirRecord->extent);
1901 }
1902 }
1903
1904 return used_bytes;
1905 }
1906
1907 #if 0
1908 /* Might get rid of this func */
1909 static int
1910 cd9660_copy_stat_info(cd9660node *from, cd9660node *to, int file)
1911 {
1912 to->node->inode->st.st_dev = 0;
1913 to->node->inode->st.st_ino = 0;
1914 to->node->inode->st.st_size = 0;
1915 to->node->inode->st.st_blksize = from->node->inode->st.st_blksize;
1916 to->node->inode->st.st_atime = from->node->inode->st.st_atime;
1917 to->node->inode->st.st_mtime = from->node->inode->st.st_mtime;
1918 to->node->inode->st.st_ctime = from->node->inode->st.st_ctime;
1919 to->node->inode->st.st_uid = from->node->inode->st.st_uid;
1920 to->node->inode->st.st_gid = from->node->inode->st.st_gid;
1921 to->node->inode->st.st_mode = from->node->inode->st.st_mode;
1922 /* Clear out type */
1923 to->node->inode->st.st_mode = to->node->inode->st.st_mode & ~(S_IFMT);
1924 if (file)
1925 to->node->inode->st.st_mode |= S_IFREG;
1926 else
1927 to->node->inode->st.st_mode |= S_IFDIR;
1928 return 1;
1929 }
1930 #endif
1931
1932 static cd9660node *
cd9660_create_virtual_entry(const char * name,cd9660node * parent,int file,int insert)1933 cd9660_create_virtual_entry(const char *name, cd9660node *parent, int file,
1934 int insert)
1935 {
1936 cd9660node *temp;
1937 fsnode * tfsnode;
1938
1939 assert(parent != NULL);
1940
1941 temp = cd9660_allocate_cd9660node();
1942 if (temp == NULL)
1943 return NULL;
1944
1945 if ((tfsnode = malloc(sizeof(fsnode))) == NULL) {
1946 CD9660_MEM_ALLOC_ERROR("cd9660_create_virtual_entry");
1947 return NULL;
1948 }
1949
1950 /* Assume for now name is a valid length */
1951 if ((tfsnode->name = malloc(strlen(name) + 1)) == NULL) {
1952 CD9660_MEM_ALLOC_ERROR("cd9660_create_virtual_entry");
1953 return NULL;
1954 }
1955
1956 if ((temp->isoDirRecord =
1957 malloc(sizeof(iso_directory_record_cd9660))) == NULL) {
1958 CD9660_MEM_ALLOC_ERROR("cd9660_create_virtual_entry");
1959 return NULL;
1960 }
1961
1962 strcpy(tfsnode->name, name);
1963
1964 cd9660_convert_filename(tfsnode->name, temp->isoDirRecord->name, file);
1965
1966 temp->node = tfsnode;
1967 temp->parent = parent;
1968
1969 if (insert) {
1970 if (temp->parent != NULL) {
1971 temp->level = temp->parent->level + 1;
1972 if (!TAILQ_EMPTY(&temp->parent->cn_children))
1973 cd9660_sorted_child_insert(temp->parent, temp);
1974 else
1975 TAILQ_INSERT_HEAD(&temp->parent->cn_children,
1976 temp, cn_next_child);
1977 }
1978 }
1979
1980 if (parent->node != NULL) {
1981 tfsnode->type = parent->node->type;
1982 }
1983
1984 /* Clear out file type bits */
1985 tfsnode->type &= ~(S_IFMT);
1986 if (file)
1987 tfsnode->type |= S_IFREG;
1988 else
1989 tfsnode->type |= S_IFDIR;
1990
1991 /* Indicate that there is no spec entry (inode) */
1992 tfsnode->flags &= ~(FSNODE_F_HASSPEC);
1993 #if 0
1994 cd9660_copy_stat_info(parent, temp, file);
1995 #endif
1996 return temp;
1997 }
1998
1999 static cd9660node *
cd9660_create_file(const char * name,cd9660node * parent,cd9660node * me)2000 cd9660_create_file(const char * name, cd9660node *parent, cd9660node *me)
2001 {
2002 cd9660node *temp;
2003
2004 temp = cd9660_create_virtual_entry(name,parent,1,1);
2005 if (temp == NULL)
2006 return NULL;
2007
2008 temp->fileDataLength = 0;
2009
2010 temp->type = CD9660_TYPE_FILE | CD9660_TYPE_VIRTUAL;
2011
2012 if ((temp->node->inode = calloc(1, sizeof(fsinode))) == NULL)
2013 return NULL;
2014 *temp->node->inode = *me->node->inode;
2015
2016 if (cd9660_translate_node_common(temp) == 0)
2017 return NULL;
2018 return temp;
2019 }
2020
2021 /*
2022 * Create a new directory which does not exist on disk
2023 * @param const char * name The name to assign to the directory
2024 * @param const char * parent Pointer to the parent directory
2025 * @returns cd9660node * Pointer to the new directory
2026 */
2027 static cd9660node *
cd9660_create_directory(const char * name,cd9660node * parent,cd9660node * me)2028 cd9660_create_directory(const char *name, cd9660node *parent, cd9660node *me)
2029 {
2030 cd9660node *temp;
2031
2032 temp = cd9660_create_virtual_entry(name,parent,0,1);
2033 if (temp == NULL)
2034 return NULL;
2035 temp->node->type |= S_IFDIR;
2036
2037 temp->type = CD9660_TYPE_DIR | CD9660_TYPE_VIRTUAL;
2038
2039 if ((temp->node->inode = calloc(1, sizeof(fsinode))) == NULL)
2040 return NULL;
2041 *temp->node->inode = *me->node->inode;
2042
2043 if (cd9660_translate_node_common(temp) == 0)
2044 return NULL;
2045 return temp;
2046 }
2047
2048 static cd9660node *
cd9660_create_special_directory(u_char type,cd9660node * parent)2049 cd9660_create_special_directory(u_char type, cd9660node *parent)
2050 {
2051 cd9660node *temp, *first;
2052 char na[2];
2053
2054 assert(parent != NULL);
2055
2056 if (type == CD9660_TYPE_DOT)
2057 na[0] = 0;
2058 else if (type == CD9660_TYPE_DOTDOT)
2059 na[0] = 1;
2060 else
2061 return 0;
2062
2063 na[1] = 0;
2064 if ((temp = cd9660_create_virtual_entry(na, parent, 0, 0)) == NULL)
2065 return NULL;
2066
2067 temp->parent = parent;
2068 temp->type = type;
2069 temp->isoDirRecord->length[0] = 34;
2070 /* Dot record is always first */
2071 if (type == CD9660_TYPE_DOT) {
2072 parent->dot_record = temp;
2073 TAILQ_INSERT_HEAD(&parent->cn_children, temp, cn_next_child);
2074 /* DotDot should be second */
2075 } else if (type == CD9660_TYPE_DOTDOT) {
2076 parent->dot_dot_record = temp;
2077 /*
2078 * If the first child is the dot record, insert
2079 * this second. Otherwise, insert it at the head.
2080 */
2081 if ((first = TAILQ_FIRST(&parent->cn_children)) == NULL ||
2082 (first->type & CD9660_TYPE_DOT) == 0) {
2083 TAILQ_INSERT_HEAD(&parent->cn_children, temp,
2084 cn_next_child);
2085 } else {
2086 TAILQ_INSERT_AFTER(&parent->cn_children, first, temp,
2087 cn_next_child);
2088 }
2089 }
2090
2091 return temp;
2092 }
2093
2094 int
cd9660_add_generic_bootimage(const char * bootimage)2095 cd9660_add_generic_bootimage(const char *bootimage)
2096 {
2097 struct stat stbuf;
2098
2099 assert(bootimage != NULL);
2100
2101 if (*bootimage == '\0') {
2102 warnx("Error: Boot image must be a filename");
2103 return 0;
2104 }
2105
2106 if ((diskStructure.generic_bootimage = strdup(bootimage)) == NULL) {
2107 warn("%s: strdup", __func__);
2108 return 0;
2109 }
2110
2111 /* Get information about the file */
2112 if (lstat(diskStructure.generic_bootimage, &stbuf) == -1)
2113 err(EXIT_FAILURE, "%s: lstat(\"%s\")", __func__,
2114 diskStructure.generic_bootimage);
2115
2116 if (stbuf.st_size > 32768) {
2117 warnx("Error: Boot image must be no greater than 32768 bytes");
2118 return 0;
2119 }
2120
2121 if (diskStructure.verbose_level > 0) {
2122 printf("Generic boot image image has size %lld\n",
2123 (long long)stbuf.st_size);
2124 }
2125
2126 diskStructure.has_generic_bootimage = 1;
2127
2128 return 1;
2129 }
2130