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cd9660.c
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cd9660.c
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/* $NetBSD: cd9660.c,v 1.49 2015/06/17 01:05:41 christos Exp $ */
/*
* Copyright (c) 2005 Daniel Watt, Walter Deignan, Ryan Gabrys, Alan
* Perez-Rathke and Ram Vedam. All rights reserved.
*
* This code was written by Daniel Watt, Walter Deignan, Ryan Gabrys,
* Alan Perez-Rathke and Ram Vedam.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY DANIEL WATT, WALTER DEIGNAN, RYAN
* GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL DANIEL WATT, WALTER DEIGNAN, RYAN
* GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE,DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Luke Mewburn for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#else
#include <sys/mount.h>
#endif
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(__lint)
__RCSID("$NetBSD: cd9660.c,v 1.49 2015/06/17 01:05:41 christos Exp $");
#endif /* !__lint */
#include <string.h>
#include <ctype.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <util.h>
#include "makefs.h"
#include "cd9660.h"
#include "cd9660/iso9660_rrip.h"
#include "cd9660/cd9660_archimedes.h"
/*
* Global variables
*/
static void cd9660_finalize_PVD(iso9660_disk *);
static cd9660node *cd9660_allocate_cd9660node(void);
static void cd9660_set_defaults(iso9660_disk *);
static int cd9660_arguments_set_string(const char *, const char *, int,
char, char *);
static void cd9660_populate_iso_dir_record(
struct _iso_directory_record_cd9660 *, u_char, u_char, u_char,
const char *);
static void cd9660_setup_root_node(iso9660_disk *);
static int cd9660_setup_volume_descriptors(iso9660_disk *);
#if 0
static int cd9660_fill_extended_attribute_record(cd9660node *);
#endif
static void cd9660_sort_nodes(cd9660node *);
static int cd9660_translate_node_common(iso9660_disk *, cd9660node *);
static int cd9660_translate_node(iso9660_disk *, fsnode *, cd9660node *);
static int cd9660_compare_filename(const char *, const char *);
static void cd9660_sorted_child_insert(cd9660node *, cd9660node *);
static int cd9660_handle_collisions(iso9660_disk *, cd9660node *, int);
static cd9660node *cd9660_rename_filename(iso9660_disk *, cd9660node *, int,
int);
static void cd9660_copy_filenames(iso9660_disk *, cd9660node *);
static void cd9660_sorting_nodes(cd9660node *);
static int cd9660_count_collisions(cd9660node *);
static cd9660node *cd9660_rrip_move_directory(iso9660_disk *, cd9660node *);
static int cd9660_add_dot_records(iso9660_disk *, cd9660node *);
static void cd9660_convert_structure(iso9660_disk *, fsnode *, cd9660node *, int,
int *, int *);
static void cd9660_free_structure(cd9660node *);
static int cd9660_generate_path_table(iso9660_disk *);
static int cd9660_level1_convert_filename(iso9660_disk *, const char *, char *,
int);
static int cd9660_level2_convert_filename(iso9660_disk *, const char *, char *,
int);
#if 0
static int cd9660_joliet_convert_filename(iso9660_disk *, const char *, char *,
int);
#endif
static int cd9660_convert_filename(iso9660_disk *, const char *, char *, int);
static void cd9660_populate_dot_records(iso9660_disk *, cd9660node *);
static int64_t cd9660_compute_offsets(iso9660_disk *, cd9660node *, int64_t);
#if 0
static int cd9660_copy_stat_info(cd9660node *, cd9660node *, int);
#endif
static cd9660node *cd9660_create_virtual_entry(iso9660_disk *, const char *,
cd9660node *, int, int);
static cd9660node *cd9660_create_file(iso9660_disk *, const char *,
cd9660node *, cd9660node *);
static cd9660node *cd9660_create_directory(iso9660_disk *, const char *,
cd9660node *, cd9660node *);
static cd9660node *cd9660_create_special_directory(iso9660_disk *, u_char,
cd9660node *);
static int cd9660_add_generic_bootimage(iso9660_disk *, const char *);
/*
* Allocate and initalize a cd9660node
* @returns struct cd9660node * Pointer to new node, or NULL on error
*/
static cd9660node *
cd9660_allocate_cd9660node(void)
{
cd9660node *temp = ecalloc(1, sizeof(*temp));
TAILQ_INIT(&temp->cn_children);
temp->parent = temp->dot_record = temp->dot_dot_record = NULL;
temp->ptnext = temp->ptprev = temp->ptlast = NULL;
temp->node = NULL;
temp->isoDirRecord = NULL;
temp->isoExtAttributes = NULL;
temp->rr_real_parent = temp->rr_relocated = NULL;
temp->su_tail_data = NULL;
return temp;
}
int cd9660_defaults_set = 0;
/**
* Set default values for cd9660 extension to makefs
*/
static void
cd9660_set_defaults(iso9660_disk *diskStructure)
{
/*Fix the sector size for now, though the spec allows for other sizes*/
diskStructure->sectorSize = 2048;
/* Set up defaults in our own structure */
diskStructure->verbose_level = 0;
diskStructure->keep_bad_images = 0;
diskStructure->follow_sym_links = 0;
diskStructure->isoLevel = 2;
diskStructure->rock_ridge_enabled = 0;
diskStructure->rock_ridge_renamed_dir_name = 0;
diskStructure->rock_ridge_move_count = 0;
diskStructure->rr_moved_dir = 0;
diskStructure->archimedes_enabled = 0;
diskStructure->chrp_boot = 0;
diskStructure->include_padding_areas = 1;
/* Spec breaking functionality */
diskStructure->allow_deep_trees =
diskStructure->allow_start_dot =
diskStructure->allow_max_name =
diskStructure->allow_illegal_chars =
diskStructure->allow_lowercase =
diskStructure->allow_multidot =
diskStructure->omit_trailing_period = 0;
/* Make sure the PVD is clear */
memset(&diskStructure->primaryDescriptor, 0, 2048);
memset(diskStructure->primaryDescriptor.publisher_id, 0x20,128);
memset(diskStructure->primaryDescriptor.preparer_id, 0x20,128);
memset(diskStructure->primaryDescriptor.application_id, 0x20,128);
memset(diskStructure->primaryDescriptor.copyright_file_id, 0x20,37);
memset(diskStructure->primaryDescriptor.abstract_file_id, 0x20,37);
memset(diskStructure->primaryDescriptor.bibliographic_file_id, 0x20,37);
strcpy(diskStructure->primaryDescriptor.system_id,"NetBSD");
cd9660_defaults_set = 1;
/* Boot support: Initially disabled */
diskStructure->has_generic_bootimage = 0;
diskStructure->generic_bootimage = NULL;
diskStructure->boot_image_directory = 0;
/*memset(diskStructure->boot_descriptor, 0, 2048);*/
diskStructure->is_bootable = 0;
TAILQ_INIT(&diskStructure->boot_images);
LIST_INIT(&diskStructure->boot_entries);
}
void
cd9660_prep_opts(fsinfo_t *fsopts)
{
iso9660_disk *diskStructure = ecalloc(1, sizeof(*diskStructure));
#define OPT_STR(letter, name, desc) \
{ letter, name, NULL, OPT_STRBUF, 0, 0, desc }
#define OPT_NUM(letter, name, field, min, max, desc) \
{ letter, name, &diskStructure->field, \
sizeof(diskStructure->field) == 8 ? OPT_INT64 : \
(sizeof(diskStructure->field) == 4 ? OPT_INT32 : \
(sizeof(diskStructure->field) == 2 ? OPT_INT16 : OPT_INT8)), \
min, max, desc }
#define OPT_BOOL(letter, name, field, desc) \
OPT_NUM(letter, name, field, 0, 1, desc)
const option_t cd9660_options[] = {
OPT_NUM('l', "isolevel", isoLevel,
1, 3, "ISO Level"),
OPT_NUM('v', "verbose", verbose_level,
0, 2, "Turns on verbose output"),
OPT_BOOL('h', "help", displayHelp,
"Show help message"),
OPT_BOOL('S', "follow-symlinks", follow_sym_links,
"Resolve symlinks in pathnames"),
OPT_BOOL('R', "rockridge", rock_ridge_enabled,
"Enable Rock-Ridge extensions"),
OPT_BOOL('C', "chrp-boot", chrp_boot,
"Enable CHRP boot"),
OPT_BOOL('K', "keep-bad-images", keep_bad_images,
"Keep bad images"),
OPT_BOOL('D', "allow-deep-trees", allow_deep_trees,
"Allow trees more than 8 levels"),
OPT_BOOL('a', "allow-max-name", allow_max_name,
"Allow 37 char filenames (unimplemented)"),
OPT_BOOL('i', "allow-illegal-chars", allow_illegal_chars,
"Allow illegal characters in filenames"),
OPT_BOOL('D', "allow-multidot", allow_multidot,
"Allow multiple periods in filenames"),
OPT_BOOL('o', "omit-trailing-period", omit_trailing_period,
"Omit trailing periods in filenames"),
OPT_BOOL('\0', "allow-lowercase", allow_lowercase,
"Allow lowercase characters in filenames"),
OPT_BOOL('\0', "archimedes", archimedes_enabled,
"Enable Archimedes structure"),
OPT_BOOL('\0', "no-trailing-padding", include_padding_areas,
"Include padding areas"),
OPT_STR('A', "applicationid", "Application Identifier"),
OPT_STR('P', "publisher", "Publisher Identifier"),
OPT_STR('p', "preparer", "Preparer Identifier"),
OPT_STR('L', "label", "Disk Label"),
OPT_STR('V', "volumeid", "Volume Set Identifier"),
OPT_STR('B', "bootimage", "Boot image parameter"),
OPT_STR('G', "generic-bootimage", "Generic boot image param"),
OPT_STR('\0', "bootimagedir", "Boot image directory"),
OPT_STR('\0', "no-emul-boot", "No boot emulation"),
OPT_STR('\0', "no-boot", "No boot support"),
OPT_STR('\0', "hard-disk-boot", "Boot from hard disk"),
OPT_STR('\0', "boot-load-segment", "Boot load segment"),
{ .name = NULL }
};
fsopts->fs_specific = diskStructure;
fsopts->fs_options = copy_opts(cd9660_options);
cd9660_set_defaults(diskStructure);
}
void
cd9660_cleanup_opts(fsinfo_t *fsopts)
{
free(fsopts->fs_specific);
free(fsopts->fs_options);
}
static int
cd9660_arguments_set_string(const char *val, const char *fieldtitle, int length,
char testmode, char * dest)
{
int len, test;
if (val == NULL)
warnx("error: The %s requires a string argument", fieldtitle);
else if ((len = strlen(val)) <= length) {
if (testmode == 'd')
test = cd9660_valid_d_chars(val);
else
test = cd9660_valid_a_chars(val);
if (test) {
memcpy(dest, val, len);
if (test == 2)
cd9660_uppercase_characters(dest, len);
return 1;
} else
warnx("error: The %s must be composed of "
"%c-characters", fieldtitle, testmode);
} else
warnx("error: The %s must be at most 32 characters long",
fieldtitle);
return 0;
}
/*
* Command-line parsing function
*/
int
cd9660_parse_opts(const char *option, fsinfo_t *fsopts)
{
int rv, i;
iso9660_disk *diskStructure = fsopts->fs_specific;
option_t *cd9660_options = fsopts->fs_options;
char buf[1024];
const char *name, *desc;
assert(option != NULL);
if (debug & DEBUG_FS_PARSE_OPTS)
printf("%s: got `%s'\n", __func__, option);
i = set_option(cd9660_options, option, buf, sizeof(buf));
if (i == -1)
return 0;
if (cd9660_options[i].name == NULL)
abort();
name = cd9660_options[i].name;
desc = cd9660_options[i].desc;
switch (cd9660_options[i].letter) {
case 'h':
case 'S':
rv = 0; /* this is not handled yet */
break;
case 'L':
rv = cd9660_arguments_set_string(buf, desc, 32, 'd',
diskStructure->primaryDescriptor.volume_id);
break;
case 'A':
rv = cd9660_arguments_set_string(buf, desc, 128, 'a',
diskStructure->primaryDescriptor.application_id);
break;
case 'P':
rv = cd9660_arguments_set_string(buf, desc, 128, 'a',
diskStructure->primaryDescriptor.publisher_id);
break;
case 'p':
rv = cd9660_arguments_set_string(buf, desc, 128, 'a',
diskStructure->primaryDescriptor.preparer_id);
break;
case 'V':
rv = cd9660_arguments_set_string(buf, desc, 128, 'a',
diskStructure->primaryDescriptor.volume_set_id);
break;
/* Boot options */
case 'B':
if (buf[0] == '\0') {
warnx("The Boot Image parameter requires a valid boot"
" information string");
rv = 0;
} else
rv = cd9660_add_boot_disk(diskStructure, buf);
break;
case 'G':
if (buf[0] == '\0') {
warnx("The Generic Boot Image parameter requires a"
" valid boot information string");
rv = 0;
} else
rv = cd9660_add_generic_bootimage(diskStructure, buf);
break;
default:
if (strcmp(name, "bootimagedir") == 0) {
/*
* XXXfvdl this is unused.
*/
if (buf[0] == '\0') {
warnx("The Boot Image Directory parameter"
" requires a directory name");
rv = 0;
} else {
diskStructure->boot_image_directory =
emalloc(strlen(buf) + 1);
/* BIG TODO: Add the max length function here */
rv = cd9660_arguments_set_string(buf, desc, 12,
'd', diskStructure->boot_image_directory);
}
} else if (strcmp(name, "no-emul-boot") == 0 ||
strcmp(name, "no-boot") == 0 ||
strcmp(name, "hard-disk-boot") == 0) {
/* RRIP */
cd9660_eltorito_add_boot_option(diskStructure, name, 0);
rv = 1;
} else if (strcmp(name, "boot-load-segment") == 0) {
if (buf[0] == '\0') {
warnx("Option `%s' doesn't contain a value",
name);
rv = 0;
} else {
cd9660_eltorito_add_boot_option(diskStructure,
name, buf);
rv = 1;
}
} else
rv = 1;
}
return rv;
}
/*
* Main function for cd9660_makefs
* Builds the ISO image file
* @param const char *image The image filename to create
* @param const char *dir The directory that is being read
* @param struct fsnode *root The root node of the filesystem tree
* @param struct fsinfo_t *fsopts Any options
*/
void
cd9660_makefs(const char *image, const char *dir, fsnode *root,
fsinfo_t *fsopts)
{
int64_t startoffset;
int numDirectories;
uint64_t pathTableSectors;
int64_t firstAvailableSector;
int64_t totalSpace;
int error;
cd9660node *real_root;
iso9660_disk *diskStructure = fsopts->fs_specific;
if (diskStructure->verbose_level > 0)
printf("%s: ISO level is %i\n", __func__,
diskStructure->isoLevel);
if (diskStructure->isoLevel < 2 &&
diskStructure->allow_multidot)
errx(EXIT_FAILURE, "allow-multidot requires iso level of 2");
assert(image != NULL);
assert(dir != NULL);
assert(root != NULL);
if (diskStructure->displayHelp) {
/*
* Display help here - probably want to put it in
* a separate function
*/
return;
}
if (diskStructure->verbose_level > 0)
printf("%s: image %s directory %s root %p\n", __func__,
image, dir, root);
/* Set up some constants. Later, these will be defined with options */
/* Counter needed for path tables */
numDirectories = 0;
/* Convert tree to our own format */
/* Actually, we now need to add the REAL root node, at level 0 */
real_root = cd9660_allocate_cd9660node();
real_root->isoDirRecord = emalloc(sizeof(*real_root->isoDirRecord));
/* Leave filename blank for root */
memset(real_root->isoDirRecord->name, 0,
ISO_FILENAME_MAXLENGTH_WITH_PADDING);
real_root->level = 0;
diskStructure->rootNode = real_root;
real_root->type = CD9660_TYPE_DIR;
error = 0;
real_root->node = root;
cd9660_convert_structure(diskStructure, root, real_root, 1,
&numDirectories, &error);
if (TAILQ_EMPTY(&real_root->cn_children)) {
errx(EXIT_FAILURE, "%s: converted directory is empty. "
"Tree conversion failed", __func__);
} else if (error != 0) {
errx(EXIT_FAILURE, "%s: tree conversion failed", __func__);
} else {
if (diskStructure->verbose_level > 0)
printf("%s: tree converted\n", __func__);
}
/* Add the dot and dot dot records */
cd9660_add_dot_records(diskStructure, real_root);
cd9660_setup_root_node(diskStructure);
if (diskStructure->verbose_level > 0)
printf("%s: done converting tree\n", __func__);
/* non-SUSP extensions */
if (diskStructure->archimedes_enabled)
archimedes_convert_tree(diskStructure->rootNode);
/* Rock ridge / SUSP init pass */
if (diskStructure->rock_ridge_enabled) {
cd9660_susp_initialize(diskStructure, diskStructure->rootNode,
diskStructure->rootNode, NULL);
}
/* Build path table structure */
diskStructure->pathTableLength = cd9660_generate_path_table(
diskStructure);
pathTableSectors = CD9660_BLOCKS(diskStructure->sectorSize,
diskStructure->pathTableLength);
firstAvailableSector = cd9660_setup_volume_descriptors(diskStructure);
if (diskStructure->is_bootable) {
firstAvailableSector = cd9660_setup_boot(diskStructure,
firstAvailableSector);
if (firstAvailableSector < 0)
errx(EXIT_FAILURE, "setup_boot failed");
}
/* LE first, then BE */
diskStructure->primaryLittleEndianTableSector = firstAvailableSector;
diskStructure->primaryBigEndianTableSector =
diskStructure->primaryLittleEndianTableSector + pathTableSectors;
/* Set the secondary ones to -1, not going to use them for now */
diskStructure->secondaryBigEndianTableSector = -1;
diskStructure->secondaryLittleEndianTableSector = -1;
diskStructure->dataFirstSector =
diskStructure->primaryBigEndianTableSector + pathTableSectors;
if (diskStructure->verbose_level > 0)
printf("%s: Path table conversion complete. "
"Each table is %i bytes, or %" PRIu64 " sectors.\n",
__func__,
diskStructure->pathTableLength, pathTableSectors);
startoffset = diskStructure->sectorSize*diskStructure->dataFirstSector;
totalSpace = cd9660_compute_offsets(diskStructure, real_root, startoffset);
diskStructure->totalSectors = diskStructure->dataFirstSector +
CD9660_BLOCKS(diskStructure->sectorSize, totalSpace);
/* Disabled until pass 1 is done */
if (diskStructure->rock_ridge_enabled) {
diskStructure->susp_continuation_area_start_sector =
diskStructure->totalSectors;
diskStructure->totalSectors +=
CD9660_BLOCKS(diskStructure->sectorSize,
diskStructure->susp_continuation_area_size);
cd9660_susp_finalize(diskStructure, diskStructure->rootNode);
}
cd9660_finalize_PVD(diskStructure);
/* Add padding sectors, just for testing purposes right now */
/* diskStructure->totalSectors+=150; */
/* Debugging output */
if (diskStructure->verbose_level > 0) {
printf("%s: Sectors 0-15 reserved\n", __func__);
printf("%s: Primary path tables starts in sector %"
PRId64 "\n", __func__,
diskStructure->primaryLittleEndianTableSector);
printf("%s: File data starts in sector %"
PRId64 "\n", __func__, diskStructure->dataFirstSector);
printf("%s: Total sectors: %"
PRId64 "\n", __func__, diskStructure->totalSectors);
}
/*
* Add padding sectors at the end
* TODO: Clean this up and separate padding
*/
if (diskStructure->include_padding_areas)
diskStructure->totalSectors += 150;
cd9660_write_image(diskStructure, image);
if (diskStructure->verbose_level > 1) {
debug_print_volume_descriptor_information(diskStructure);
debug_print_tree(diskStructure, real_root, 0);
debug_print_path_tree(real_root);
}
/* Clean up data structures */
cd9660_free_structure(real_root);
if (diskStructure->verbose_level > 0)
printf("%s: done\n", __func__);
}
/* Generic function pointer - implement later */
typedef int (*cd9660node_func)(cd9660node *);
static void
cd9660_finalize_PVD(iso9660_disk *diskStructure)
{
time_t tim;
/* root should be a fixed size of 34 bytes since it has no name */
memcpy(diskStructure->primaryDescriptor.root_directory_record,
diskStructure->rootNode->dot_record->isoDirRecord, 34);
/* In RRIP, this might be longer than 34 */
diskStructure->primaryDescriptor.root_directory_record[0] = 34;
/* Set up all the important numbers in the PVD */
cd9660_bothendian_dword(diskStructure->totalSectors,
(unsigned char *)diskStructure->primaryDescriptor.volume_space_size);
cd9660_bothendian_word(1,
(unsigned char *)diskStructure->primaryDescriptor.volume_set_size);
cd9660_bothendian_word(1,
(unsigned char *)
diskStructure->primaryDescriptor.volume_sequence_number);
cd9660_bothendian_word(diskStructure->sectorSize,
(unsigned char *)
diskStructure->primaryDescriptor.logical_block_size);
cd9660_bothendian_dword(diskStructure->pathTableLength,
(unsigned char *)diskStructure->primaryDescriptor.path_table_size);
cd9660_731(diskStructure->primaryLittleEndianTableSector,
(u_char *)diskStructure->primaryDescriptor.type_l_path_table);
cd9660_732(diskStructure->primaryBigEndianTableSector,
(u_char *)diskStructure->primaryDescriptor.type_m_path_table);
diskStructure->primaryDescriptor.file_structure_version[0] = 1;
/* Pad all strings with spaces instead of nulls */
cd9660_pad_string_spaces(diskStructure->primaryDescriptor.volume_id, 32);
cd9660_pad_string_spaces(diskStructure->primaryDescriptor.system_id, 32);
cd9660_pad_string_spaces(diskStructure->primaryDescriptor.volume_set_id,
128);
cd9660_pad_string_spaces(diskStructure->primaryDescriptor.publisher_id,
128);
cd9660_pad_string_spaces(diskStructure->primaryDescriptor.preparer_id,
128);
cd9660_pad_string_spaces(diskStructure->primaryDescriptor.application_id,
128);
cd9660_pad_string_spaces(
diskStructure->primaryDescriptor.copyright_file_id, 37);
cd9660_pad_string_spaces(
diskStructure->primaryDescriptor.abstract_file_id, 37);
cd9660_pad_string_spaces(
diskStructure->primaryDescriptor.bibliographic_file_id, 37);
/* Setup dates */
time(&tim);
cd9660_time_8426(
(unsigned char *)diskStructure->primaryDescriptor.creation_date,
tim);
cd9660_time_8426(
(unsigned char *)diskStructure->primaryDescriptor.modification_date,
tim);
/*
cd9660_set_date(diskStructure->primaryDescriptor.expiration_date, now);
*/
memset(diskStructure->primaryDescriptor.expiration_date, '0' ,16);
diskStructure->primaryDescriptor.expiration_date[16] = 0;
cd9660_time_8426(
(unsigned char *)diskStructure->primaryDescriptor.effective_date,
tim);
}
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)
{
record->ext_attr_length[0] = ext_attr_length;
record->flags[0] = ISO_FLAG_CLEAR | flags;
record->file_unit_size[0] = 0;
record->interleave[0] = 0;
cd9660_bothendian_word(1, record->volume_sequence_number);
record->name_len[0] = name_len;
memset(record->name, '\0', sizeof (record->name));
memcpy(record->name, name, name_len);
record->length[0] = 33 + name_len;
/* Todo : better rounding */
record->length[0] += (record->length[0] & 1) ? 1 : 0;
}
static void
cd9660_setup_root_node(iso9660_disk *diskStructure)
{
cd9660_populate_iso_dir_record(diskStructure->rootNode->isoDirRecord,
0, ISO_FLAG_DIRECTORY, 1, "\0");
}
/*********** SUPPORT FUNCTIONS ***********/
static int
cd9660_setup_volume_descriptors(iso9660_disk *diskStructure)
{
/* Boot volume descriptor should come second */
int sector = 16;
/* For now, a fixed 2 : PVD and terminator */
volume_descriptor *temp, *t;
/* Set up the PVD */
temp = emalloc(sizeof(*temp));
temp->volumeDescriptorData =
(unsigned char *)&diskStructure->primaryDescriptor;
temp->volumeDescriptorData[0] = ISO_VOLUME_DESCRIPTOR_PVD;
temp->volumeDescriptorData[6] = 1;
temp->sector = sector;
memcpy(temp->volumeDescriptorData + 1,
ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5);
diskStructure->firstVolumeDescriptor = temp;
sector++;
/* Set up boot support if enabled. BVD must reside in sector 17 */
if (diskStructure->is_bootable) {
t = emalloc(sizeof(*t));
t->volumeDescriptorData = ecalloc(1, 2048);
temp->next = t;
temp = t;
t->sector = 17;
if (diskStructure->verbose_level > 0)
printf("Setting up boot volume descriptor\n");
cd9660_setup_boot_volume_descriptor(diskStructure, t);
sector++;
}
/* Set up the terminator */
t = emalloc(sizeof(*t));
t->volumeDescriptorData = ecalloc(1, 2048);
temp->next = t;
t->volumeDescriptorData[0] = ISO_VOLUME_DESCRIPTOR_TERMINATOR;
t->next = 0;
t->volumeDescriptorData[6] = 1;
t->sector = sector;
memcpy(t->volumeDescriptorData + 1,
ISO_VOLUME_DESCRIPTOR_STANDARD_ID, 5);
sector++;
return sector;
}
#if 0
/*
* Populate EAR at some point. Not required, but is used by NetBSD's
* cd9660 support
*/
static int
cd9660_fill_extended_attribute_record(cd9660node *node)
{
node->isoExtAttributes = emalloc(sizeof(*node->isoExtAttributes));
return 1;
}
#endif
static int
cd9660_translate_node_common(iso9660_disk *diskStructure, cd9660node *newnode)
{
time_t tim;
u_char flag;
char temp[ISO_FILENAME_MAXLENGTH_WITH_PADDING];
/* Now populate the isoDirRecord structure */
memset(temp, 0, ISO_FILENAME_MAXLENGTH_WITH_PADDING);
(void)cd9660_convert_filename(diskStructure, newnode->node->name,
temp, !(S_ISDIR(newnode->node->type)));
flag = ISO_FLAG_CLEAR;
if (S_ISDIR(newnode->node->type))
flag |= ISO_FLAG_DIRECTORY;
cd9660_populate_iso_dir_record(newnode->isoDirRecord, 0,
flag, strlen(temp), temp);
/* Set the various dates */
/* If we want to use the current date and time */
time(&tim);
cd9660_time_915(newnode->isoDirRecord->date, tim);
cd9660_bothendian_dword(newnode->fileDataLength,
newnode->isoDirRecord->size);
/* If the file is a link, we want to set the size to 0 */
if (S_ISLNK(newnode->node->type))
newnode->fileDataLength = 0;
return 1;
}
/*
* Translate fsnode to cd9660node
* Translate filenames and other metadata, including dates, sizes,
* permissions, etc
* @param struct fsnode * The node generated by makefs
* @param struct cd9660node * The intermediate node to be written to
* @returns int 0 on failure, 1 on success
*/
static int
cd9660_translate_node(iso9660_disk *diskStructure, fsnode *node,
cd9660node *newnode)
{
if (node == NULL) {
if (diskStructure->verbose_level > 0)
printf("%s: NULL node passed, returning\n", __func__);
return 0;
}
newnode->isoDirRecord = emalloc(sizeof(*newnode->isoDirRecord));
/* Set the node pointer */
newnode->node = node;
/* Set the size */
if (!(S_ISDIR(node->type)))
newnode->fileDataLength = node->inode->st.st_size;
if (cd9660_translate_node_common(diskStructure, newnode) == 0)
return 0;
/* Finally, overwrite some of the values that are set by default */
cd9660_time_915(newnode->isoDirRecord->date, node->inode->st.st_mtime);
return 1;
}
/*
* Compares two ISO filenames
* @param const char * The first file name
* @param const char * The second file name
* @returns : -1 if first is less than second, 0 if they are the same, 1 if
* the second is greater than the first
*/
static int
cd9660_compare_filename(const char *first, const char *second)
{
/*
* This can be made more optimal once it has been tested
* (the extra character, for example, is for testing)
*/
int p1 = 0;
int p2 = 0;
char c1, c2;
/* First, on the filename */
while (p1 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION-1
&& p2 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION-1) {
c1 = first[p1];
c2 = second[p2];
if (c1 == '.' && c2 =='.')
break;
else if (c1 == '.') {
p2++;
c1 = ' ';
} else if (c2 == '.') {
p1++;
c2 = ' ';
} else {
p1++;
p2++;
}
if (c1 < c2)
return -1;
else if (c1 > c2) {
return 1;
}
}
if (first[p1] == '.' && second[p2] == '.') {
p1++;
p2++;
while (p1 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION - 1
&& p2 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION - 1) {
c1 = first[p1];
c2 = second[p2];
if (c1 == ';' && c2 == ';')
break;
else if (c1 == ';') {
p2++;
c1 = ' ';
} else if (c2 == ';') {
p1++;
c2 = ' ';
} else {
p1++;
p2++;
}
if (c1 < c2)
return -1;
else if (c1 > c2)
return 1;
}
}
return 0;
}
/*
* Insert a node into list with ISO sorting rules
* @param cd9660node * The head node of the list
* @param cd9660node * The node to be inserted
*/
static void
cd9660_sorted_child_insert(cd9660node *parent, cd9660node *cn_new)
{
int compare;
cd9660node *cn;
struct cd9660_children_head *head = &parent->cn_children;
/* TODO: Optimize? */
cn_new->parent = parent;
/*
* first will either be 0, the . or the ..
* if . or .., this means no other entry may be written before first
* if 0, the new node may be inserted at the head
*/
TAILQ_FOREACH(cn, head, cn_next_child) {
/*
* Dont insert a node twice -
* that would cause an infinite loop
*/
if (cn_new == cn)
return;
compare = cd9660_compare_filename(cn_new->isoDirRecord->name,
cn->isoDirRecord->name);
if (compare == 0)
compare = cd9660_compare_filename(cn_new->node->name,
cn->node->name);
if (compare < 0)