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freebsd-skq/usr.sbin/makefs/cd9660.c
emaste aa1b14508d makefs: clean up warnings 
- make functions and variables static where appropriate
- use const char * where appropriate
- remove unused variables

Sponsored by:	The FreeBSD Foundation
2017-05-03 14:57:04 +00:00

2130 lines
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/* $NetBSD: cd9660.c,v 1.32 2011/08/23 17:09:11 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/queue.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <util.h>
#include "makefs.h"
#include "cd9660.h"
#include "cd9660/iso9660_rrip.h"
#include "cd9660/cd9660_archimedes.h"
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 initialize 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;
}
/**
* 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, "FreeBSD");
/* 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, 2, "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('m', "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 tstamp = stampst.st_ino ? stampst.st_mtime : time(NULL);
/* 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 */
cd9660_time_8426(
(unsigned char *)diskStructure->primaryDescriptor.creation_date,
tstamp);
cd9660_time_8426(
(unsigned char *)diskStructure->primaryDescriptor.modification_date,
tstamp);
#if 0
cd9660_set_date(diskStructure->primaryDescriptor.expiration_date,
tstamp);
#endif
memset(diskStructure->primaryDescriptor.expiration_date, '0', 16);
diskStructure->primaryDescriptor.expiration_date[16] = 0;
cd9660_time_8426(
(unsigned char *)diskStructure->primaryDescriptor.effective_date,
tstamp);
/* make this sane */
cd9660_time_915(diskStructure->rootNode->dot_record->isoDirRecord->date,
tstamp);
}
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 = NULL;
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 tstamp = stampst.st_ino ? stampst.st_mtime : time(NULL);
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 */
cd9660_time_915(newnode->isoDirRecord->date, tstamp);
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,
stampst.st_ino ? stampst.st_mtime : 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)
break;
}
if (cn == NULL)
TAILQ_INSERT_TAIL(head, cn_new, cn_next_child);
else
TAILQ_INSERT_BEFORE(cn, cn_new, cn_next_child);
}
/*
* Called After cd9660_sorted_child_insert
* handles file collisions by suffixing each filname with ~n
* where n represents the files respective place in the ordering
*/
static int
cd9660_handle_collisions(iso9660_disk *diskStructure, cd9660node *colliding,
int past)
{
cd9660node *iter, *next, *prev;
int skip;
int delete_chars = 0;
int temp_past = past;
int temp_skip;
int flag = 0;
cd9660node *end_of_range;
for (iter = TAILQ_FIRST(&colliding->cn_children);
iter != NULL && (next = TAILQ_NEXT(iter, cn_next_child)) != NULL;) {
if (strcmp(iter->isoDirRecord->name,
next->isoDirRecord->name) != 0) {
iter = TAILQ_NEXT(iter, cn_next_child);
continue;
}
flag = 1;
temp_skip = skip = cd9660_count_collisions(iter);
end_of_range = iter;
while (temp_skip > 0) {
temp_skip--;
end_of_range = TAILQ_NEXT(end_of_range, cn_next_child);
}
temp_past = past;
while (temp_past > 0) {
if ((next = TAILQ_NEXT(end_of_range, cn_next_child)) != NULL)
end_of_range = next;
else if ((prev = TAILQ_PREV(iter, cd9660_children_head, cn_next_child)) != NULL)
iter = prev;
else
delete_chars++;
temp_past--;
}
skip += past;
iter = cd9660_rename_filename(diskStructure, iter, skip,
delete_chars);
}
return flag;
}
static cd9660node *
cd9660_rename_filename(iso9660_disk *diskStructure, cd9660node *iter, int num,
int delete_chars)
{
int i = 0;
int numbts, digit, digits, temp, powers, count;
char *naming;
int maxlength;
char *tmp;
if (diskStructure->verbose_level > 0)
printf("Rename_filename called\n");
assert(1 <= diskStructure->isoLevel && diskStructure->isoLevel <= 2);
/* TODO : A LOT of chanes regarding 8.3 filenames */
if (diskStructure->isoLevel == 1)
maxlength = 8;
else if (diskStructure->isoLevel == 2)
maxlength = 31;
else
maxlength = ISO_FILENAME_MAXLENGTH_BEFORE_VERSION;
tmp = emalloc(ISO_FILENAME_MAXLENGTH_WITH_PADDING);
while (i < num && iter) {
powers = 1;
count = 0;
digits = 1;
while (((int)(i / powers) ) >= 10) {
digits++;
powers = powers * 10;
}
naming = iter->o_name;
/*
while ((*naming != '.') && (*naming != ';')) {
naming++;
count++;
}
*/
while (count < maxlength) {
if (*naming == ';')
break;
naming++;
count++;
}
if ((count + digits) < maxlength)
numbts = count;
else
numbts = maxlength - (digits);
numbts -= delete_chars;
/* 8.3 rules - keep the extension, add before the dot */
/*
* This code makes a bunch of assumptions.
* See if you can spot them all :)
*/
#if 0
if (diskStructure->isoLevel == 1) {
numbts = 8 - digits - delete_chars;
if (dot < 0) {
} else {
if (dot < 8) {
memmove(&tmp[numbts],&tmp[dot],4);
}
}
}
#endif
/* (copying just the filename before the '.' */
memcpy(tmp, (iter->o_name), numbts);
/* adding the appropriate number following the name */
temp = i;
while (digits > 0) {
digit = (int)(temp / powers);
temp = temp - digit * powers;
sprintf(&tmp[numbts] , "%d", digit);
digits--;
numbts++;
powers = powers / 10;
}
while ((*naming != ';') && (numbts < maxlength)) {
tmp[numbts] = (*naming);
naming++;
numbts++;
}
tmp[numbts] = ';';
tmp[numbts+1] = '1';
tmp[numbts+2] = '\0';
/*
* now tmp has exactly the identifier
* we want so we'll copy it back to record
*/
memcpy((iter->isoDirRecord->name), tmp, numbts + 3);
iter = TAILQ_NEXT(iter, cn_next_child);
i++;
}
free(tmp);
return iter;
}
/* Todo: Figure out why these functions are nec. */
static void
cd9660_copy_filenames(iso9660_disk *diskStructure, cd9660node *node)
{
cd9660node *cn;
if (TAILQ_EMPTY(&node->cn_children))
return;
if (TAILQ_FIRST(&node->cn_children)->isoDirRecord == NULL) {
debug_print_tree(diskStructure, diskStructure->rootNode, 0);
exit(1);
}
TAILQ_FOREACH(cn, &node->cn_children, cn_next_child) {
cd9660_copy_filenames(diskStructure, cn);
memcpy(cn->o_name, cn->isoDirRecord->name,
ISO_FILENAME_MAXLENGTH_WITH_PADDING);
}
}
static void
cd9660_sorting_nodes(cd9660node *node)
{
cd9660node *cn;
TAILQ_FOREACH(cn, &node->cn_children, cn_next_child)
cd9660_sorting_nodes(cn);
cd9660_sort_nodes(node);
}
/* XXX Bubble sort. */
static void
cd9660_sort_nodes(cd9660node *node)
{
cd9660node *cn, *next;
do {
TAILQ_FOREACH(cn, &node->cn_children, cn_next_child) {
if ((next = TAILQ_NEXT(cn, cn_next_child)) == NULL)
return;
else if (strcmp(next->isoDirRecord->name,
cn->isoDirRecord->name) >= 0)
continue;
TAILQ_REMOVE(&node->cn_children, next, cn_next_child);
TAILQ_INSERT_BEFORE(cn, next, cn_next_child);
break;
}
} while (cn != NULL);
}
static int
cd9660_count_collisions(cd9660node *copy)
{
int count = 0;
cd9660node *iter, *next;
for (iter = copy;
(next = TAILQ_NEXT(iter, cn_next_child)) != NULL;
iter = next) {
if (cd9660_compare_filename(iter->isoDirRecord->name,
next->isoDirRecord->name) == 0)
count++;
else
return count;
}
#if 0
if ((next = TAILQ_NEXT(iter, cn_next_child)) != NULL) {
printf("%s: count is %i\n", __func__, count);
compare = cd9660_compare_filename(iter->isoDirRecord->name,
next->isoDirRecord->name);
if (compare == 0) {
count++;
return cd9660_recurse_on_collision(next, count);
} else
return count;
}
#endif
return count;
}
static cd9660node *
cd9660_rrip_move_directory(iso9660_disk *diskStructure, cd9660node *dir)
{
char newname[9];
cd9660node *tfile;
/*
* This function needs to:
* 1) Create an empty virtual file in place of the old directory
* 2) Point the virtual file to the new directory
* 3) Point the relocated directory to its old parent
* 4) Move the directory specified by dir into rr_moved_dir,
* and rename it to "diskStructure->rock_ridge_move_count" (as a string)
*/
/* First see if the moved directory even exists */
if (diskStructure->rr_moved_dir == NULL) {
diskStructure->rr_moved_dir = cd9660_create_directory(
diskStructure, ISO_RRIP_DEFAULT_MOVE_DIR_NAME,
diskStructure->rootNode, dir);
if (diskStructure->rr_moved_dir == NULL)
return 0;
cd9660_time_915(diskStructure->rr_moved_dir->isoDirRecord->date,
stampst.st_ino ? stampst.st_mtime : start_time.tv_sec);
}
/* Create a file with the same ORIGINAL name */
tfile = cd9660_create_file(diskStructure, dir->node->name, dir->parent,
dir);
if (tfile == NULL)
return NULL;
diskStructure->rock_ridge_move_count++;
snprintf(newname, sizeof(newname), "%08i",
diskStructure->rock_ridge_move_count);
/* Point to old parent */
dir->rr_real_parent = dir->parent;
/* Place the placeholder file */
if (TAILQ_EMPTY(&dir->rr_real_parent->cn_children)) {
TAILQ_INSERT_HEAD(&dir->rr_real_parent->cn_children, tfile,
cn_next_child);
} else {
cd9660_sorted_child_insert(dir->rr_real_parent, tfile);
}
/* Point to new parent */
dir->parent = diskStructure->rr_moved_dir;
/* Point the file to the moved directory */
tfile->rr_relocated = dir;
/* Actually move the directory */
cd9660_sorted_child_insert(diskStructure->rr_moved_dir, dir);
/* TODO: Inherit permissions / ownership (basically the entire inode) */
/* Set the new name */
memset(dir->isoDirRecord->name, 0, ISO_FILENAME_MAXLENGTH_WITH_PADDING);
strncpy(dir->isoDirRecord->name, newname, 8);
dir->isoDirRecord->length[0] = 34 + 8;
dir->isoDirRecord->name_len[0] = 8;
return dir;
}
static int
cd9660_add_dot_records(iso9660_disk *diskStructure, cd9660node *root)
{
struct cd9660_children_head *head = &root->cn_children;
cd9660node *cn;
TAILQ_FOREACH(cn, head, cn_next_child) {
if ((cn->type & CD9660_TYPE_DIR) == 0)
continue;
/* Recursion first */
cd9660_add_dot_records(diskStructure, cn);
}
cd9660_create_special_directory(diskStructure, CD9660_TYPE_DOT, root);
cd9660_create_special_directory(diskStructure, CD9660_TYPE_DOTDOT,
root);
return 1;
}
/*
* Convert node to cd9660 structure
* This function is designed to be called recursively on the root node of
* the filesystem
* Lots of recursion going on here, want to make sure it is efficient
* @param struct fsnode * The root node to be converted
* @param struct cd9660* The parent node (should not be NULL)
* @param int Current directory depth
* @param int* Running count of the number of directories that are being created
*/
static void
cd9660_convert_structure(iso9660_disk *diskStructure, fsnode *root,
cd9660node *parent_node, int level, int *numDirectories, int *error)
{
fsnode *iterator = root;
cd9660node *this_node;
int working_level;
int add;
int flag = 0;
int counter = 0;
/*
* Newer, more efficient method, reduces recursion depth
*/
if (root == NULL) {
warnx("%s: root is null", __func__);
return;
}
/* Test for an empty directory - makefs still gives us the . record */
if ((S_ISDIR(root->type)) && (root->name[0] == '.')
&& (root->name[1] == '\0')) {
root = root->next;
if (root == NULL)
return;
}
if ((this_node = cd9660_allocate_cd9660node()) == NULL) {
CD9660_MEM_ALLOC_ERROR(__func__);
}
/*
* To reduce the number of recursive calls, we will iterate over
* the next pointers to the right.
*/
while (iterator != NULL) {
add = 1;
/*
* Increment the directory count if this is a directory
* Ignore "." entries. We will generate them later
*/
if (!S_ISDIR(iterator->type) ||
strcmp(iterator->name, ".") != 0) {
/* Translate the node, including its filename */
this_node->parent = parent_node;
cd9660_translate_node(diskStructure, iterator,
this_node);
this_node->level = level;
if (S_ISDIR(iterator->type)) {
(*numDirectories)++;
this_node->type = CD9660_TYPE_DIR;
working_level = level + 1;
/*
* If at level 8, directory would be at 8
* and have children at 9 which is not
* allowed as per ISO spec
*/
if (level == 8) {
if ((!diskStructure->allow_deep_trees) &&
(!diskStructure->rock_ridge_enabled)) {
warnx("error: found entry "
"with depth greater "
"than 8.");
(*error) = 1;
return;
} else if (diskStructure->
rock_ridge_enabled) {
working_level = 3;
/*
* Moved directory is actually
* at level 2.
*/
this_node->level =
working_level - 1;
if (cd9660_rrip_move_directory(
diskStructure,
this_node) == NULL) {
warnx("Failure in "
"cd9660_rrip_"
"move_directory"
);
(*error) = 1;
return;
}
add = 0;
}
}
/* Do the recursive call on the children */
if (iterator->child != NULL) {
cd9660_convert_structure(diskStructure,
iterator->child, this_node,
working_level,
numDirectories, error);
if ((*error) == 1) {
warnx("%s: Error on recursive "
"call", __func__);
return;
}
}
} else {
/* Only directories should have children */
assert(iterator->child == NULL);
this_node->type = CD9660_TYPE_FILE;
}
/*
* Finally, do a sorted insert
*/
if (add) {
cd9660_sorted_child_insert(
parent_node, this_node);
}
/*Allocate new temp_node */
if (iterator->next != NULL) {
this_node = cd9660_allocate_cd9660node();
if (this_node == NULL)
CD9660_MEM_ALLOC_ERROR(__func__);
}
}
iterator = iterator->next;
}
/* cd9660_handle_collisions(first_node); */
/* TODO: need cleanup */
cd9660_copy_filenames(diskStructure, parent_node);
do {
flag = cd9660_handle_collisions(diskStructure, parent_node,
counter);
counter++;
cd9660_sorting_nodes(parent_node);
} while ((flag == 1) && (counter < 100));
}
/*
* Clean up the cd9660node tree
* This is designed to be called recursively on the root node
* @param struct cd9660node *root The node to free
* @returns void
*/
static void
cd9660_free_structure(cd9660node *root)
{
cd9660node *cn;
while ((cn = TAILQ_FIRST(&root->cn_children)) != NULL) {
TAILQ_REMOVE(&root->cn_children, cn, cn_next_child);
cd9660_free_structure(cn);
}
free(root);
}
/*
* Be a little more memory conservative:
* instead of having the TAILQ_ENTRY as part of the cd9660node,
* just create a temporary structure
*/
static struct ptq_entry
{
TAILQ_ENTRY(ptq_entry) ptq;
cd9660node *node;
} *n;
#define PTQUEUE_NEW(n,s,r,t){\
n = emalloc(sizeof(struct s)); \
n->node = t;\
}
/*
* Generate the path tables
* The specific implementation of this function is left as an exercise to the
* programmer. It could be done recursively. Make sure you read how the path
* table has to be laid out, it has levels.
* @param struct iso9660_disk *disk The disk image
* @returns int The number of built path tables (between 1 and 4), 0 on failure
*/
static int
cd9660_generate_path_table(iso9660_disk *diskStructure)
{
cd9660node *cn, *dirNode = diskStructure->rootNode;
cd9660node *last = dirNode;
int pathTableSize = 0; /* computed as we go */
int counter = 1; /* root gets a count of 0 */
TAILQ_HEAD(cd9660_pt_head, ptq_entry) pt_head;
TAILQ_INIT(&pt_head);
PTQUEUE_NEW(n, ptq_entry, -1, diskStructure->rootNode);
/* Push the root node */
TAILQ_INSERT_HEAD(&pt_head, n, ptq);
/* Breadth-first traversal of file structure */
while (pt_head.tqh_first != 0) {
n = pt_head.tqh_first;
dirNode = n->node;
TAILQ_REMOVE(&pt_head, pt_head.tqh_first, ptq);
free(n);
/* Update the size */
pathTableSize += ISO_PATHTABLE_ENTRY_BASESIZE
+ dirNode->isoDirRecord->name_len[0]+
(dirNode->isoDirRecord->name_len[0] % 2 == 0 ? 0 : 1);
/* includes the padding bit */
dirNode->ptnumber=counter;
if (dirNode != last) {
last->ptnext = dirNode;
dirNode->ptprev = last;
}
last = dirNode;
/* Push children onto queue */
TAILQ_FOREACH(cn, &dirNode->cn_children, cn_next_child) {
/*
* Dont add the DOT and DOTDOT types to the path
* table.
*/
if ((cn->type != CD9660_TYPE_DOT)
&& (cn->type != CD9660_TYPE_DOTDOT)) {
if (S_ISDIR(cn->node->type)) {
PTQUEUE_NEW(n, ptq_entry, -1, cn);
TAILQ_INSERT_TAIL(&pt_head, n, ptq);
}
}
}
counter++;
}
return pathTableSize;
}
void
cd9660_compute_full_filename(cd9660node *node, char *buf)
{
int len;
len = CD9660MAXPATH + 1;
len = snprintf(buf, len, "%s/%s/%s", node->node->root,
node->node->path, node->node->name);
if (len > CD9660MAXPATH)
errx(EXIT_FAILURE, "Pathname too long.");
}
/* NEW filename conversion method */
typedef int(*cd9660_filename_conversion_functor)(iso9660_disk *, const char *,
char *, int);
/*
* TODO: These two functions are almost identical.
* Some code cleanup is possible here
*
* XXX bounds checking!
*/
static int
cd9660_level1_convert_filename(iso9660_disk *diskStructure, const char *oldname,
char *newname, int is_file)
{
/*
* ISO 9660 : 10.1
* File Name shall not contain more than 8 d or d1 characters
* File Name Extension shall not contain more than 3 d or d1 characters
* Directory Identifier shall not contain more than 8 d or d1 characters
*/
int namelen = 0;
int extlen = 0;
int found_ext = 0;
while (*oldname != '\0' && extlen < 3) {
/* Handle period first, as it is special */
if (*oldname == '.') {
if (found_ext) {
*newname++ = '_';
extlen ++;
}
else {
*newname++ = '.';
found_ext = 1;
}
} else {
/* cut RISC OS file type off ISO name */
if (diskStructure->archimedes_enabled &&
*oldname == ',' && strlen(oldname) == 4)
break;
/* Enforce 12.3 / 8 */
if (namelen == 8 && !found_ext)
break;
if (islower((unsigned char)*oldname))
*newname++ = toupper((unsigned char)*oldname);
else if (isupper((unsigned char)*oldname)
|| isdigit((unsigned char)*oldname))
*newname++ = *oldname;
else
*newname++ = '_';
if (found_ext)
extlen++;
else
namelen++;
}
oldname++;
}
if (is_file) {
if (!found_ext && !diskStructure->omit_trailing_period)
*newname++ = '.';
/* Add version */
sprintf(newname, ";%i", 1);
}
return namelen + extlen + found_ext;
}
/* XXX bounds checking! */
static int
cd9660_level2_convert_filename(iso9660_disk *diskStructure, const char *oldname,
char *newname, int is_file)
{
/*
* ISO 9660 : 7.5.1
* File name : 0+ d or d1 characters
* separator 1 (.)
* File name extension : 0+ d or d1 characters
* separator 2 (;)
* File version number (5 characters, 1-32767)
* 1 <= Sum of File name and File name extension <= 30
*/
int namelen = 0;
int extlen = 0;
int found_ext = 0;
while (*oldname != '\0' && namelen + extlen < 30) {
/* Handle period first, as it is special */
if (*oldname == '.') {
if (found_ext) {
if (diskStructure->allow_multidot) {
*newname++ = '.';
} else {
*newname++ = '_';
}
extlen ++;
}
else {
*newname++ = '.';
found_ext = 1;
}
} else {
/* cut RISC OS file type off ISO name */
if (diskStructure->archimedes_enabled &&
*oldname == ',' && strlen(oldname) == 4)
break;
if (islower((unsigned char)*oldname))
*newname++ = toupper((unsigned char)*oldname);
else if (isupper((unsigned char)*oldname) ||
isdigit((unsigned char)*oldname))
*newname++ = *oldname;
else if (diskStructure->allow_multidot &&
*oldname == '.') {
*newname++ = '.';
} else {
*newname++ = '_';
}
if (found_ext)
extlen++;
else
namelen++;
}
oldname ++;
}
if (is_file) {
if (!found_ext && !diskStructure->omit_trailing_period)
*newname++ = '.';
/* Add version */
sprintf(newname, ";%i", 1);
}
return namelen + extlen + found_ext;
}
#if 0
static int
cd9660_joliet_convert_filename(iso9660_disk *diskStructure, const char *oldname,
char *newname, int is_file)
{
/* TODO: implement later, move to cd9660_joliet.c ?? */
}
#endif
/*
* Convert a file name to ISO compliant file name
* @param char * oldname The original filename
* @param char ** newname The new file name, in the appropriate character
* set and of appropriate length
* @param int 1 if file, 0 if directory
* @returns int The length of the new string
*/
static int
cd9660_convert_filename(iso9660_disk *diskStructure, const char *oldname,
char *newname, int is_file)
{
assert(1 <= diskStructure->isoLevel && diskStructure->isoLevel <= 2);
/* NEW */
cd9660_filename_conversion_functor conversion_function = NULL;
if (diskStructure->isoLevel == 1)
conversion_function = &cd9660_level1_convert_filename;
else if (diskStructure->isoLevel == 2)
conversion_function = &cd9660_level2_convert_filename;
return (*conversion_function)(diskStructure, oldname, newname, is_file);
}
int
cd9660_compute_record_size(iso9660_disk *diskStructure, cd9660node *node)
{
int size = node->isoDirRecord->length[0];
if (diskStructure->rock_ridge_enabled)
size += node->susp_entry_size;
size += node->su_tail_size;
size += size & 1; /* Ensure length of record is even. */
assert(size <= 254);
return size;
}
static void
cd9660_populate_dot_records(iso9660_disk *diskStructure, cd9660node *node)
{
node->dot_record->fileDataSector = node->fileDataSector;
memcpy(node->dot_record->isoDirRecord,node->isoDirRecord, 34);
node->dot_record->isoDirRecord->name_len[0] = 1;
node->dot_record->isoDirRecord->name[0] = 0;
node->dot_record->isoDirRecord->name[1] = 0;
node->dot_record->isoDirRecord->length[0] = 34;
node->dot_record->fileRecordSize =
cd9660_compute_record_size(diskStructure, node->dot_record);
if (node == diskStructure->rootNode) {
node->dot_dot_record->fileDataSector = node->fileDataSector;
memcpy(node->dot_dot_record->isoDirRecord,node->isoDirRecord,
34);
} else {
node->dot_dot_record->fileDataSector =
node->parent->fileDataSector;
memcpy(node->dot_dot_record->isoDirRecord,
node->parent->isoDirRecord,34);
}
node->dot_dot_record->isoDirRecord->name_len[0] = 1;
node->dot_dot_record->isoDirRecord->name[0] = 1;
node->dot_dot_record->isoDirRecord->name[1] = 0;
node->dot_dot_record->isoDirRecord->length[0] = 34;
node->dot_dot_record->fileRecordSize =
cd9660_compute_record_size(diskStructure, node->dot_dot_record);
}
/*
* @param struct cd9660node *node The node
* @param int The offset (in bytes) - SHOULD align to the beginning of a sector
* @returns int The total size of files and directory entries (should be
* a multiple of sector size)
*/
static int64_t
cd9660_compute_offsets(iso9660_disk *diskStructure, cd9660node *node,
int64_t startOffset)
{
/*
* This function needs to compute the size of directory records and
* runs, file lengths, and set the appropriate variables both in
* cd9660node and isoDirEntry
*/
int64_t used_bytes = 0;
int64_t current_sector_usage = 0;
cd9660node *child;
fsinode *inode;
int64_t r;
assert(node != NULL);
/*
* NOTE : There needs to be some special case detection for
* the "real root" node, since for it, node->node is undefined
*/
node->fileDataSector = -1;
if (node->type & CD9660_TYPE_DIR) {
node->fileRecordSize = cd9660_compute_record_size(
diskStructure, node);
/*Set what sector this directory starts in*/
node->fileDataSector =
CD9660_BLOCKS(diskStructure->sectorSize,startOffset);
cd9660_bothendian_dword(node->fileDataSector,
node->isoDirRecord->extent);
/*
* First loop over children, need to know the size of
* their directory records
*/
node->fileSectorsUsed = 1;
TAILQ_FOREACH(child, &node->cn_children, cn_next_child) {
node->fileDataLength +=
cd9660_compute_record_size(diskStructure, child);
if ((cd9660_compute_record_size(diskStructure, child) +
current_sector_usage) >=
diskStructure->sectorSize) {
current_sector_usage = 0;
node->fileSectorsUsed++;
}
current_sector_usage +=
cd9660_compute_record_size(diskStructure, child);
}
cd9660_bothendian_dword(node->fileSectorsUsed *
diskStructure->sectorSize,node->isoDirRecord->size);
/*
* This should point to the sector after the directory
* record (or, the first byte in that sector)
*/
used_bytes += node->fileSectorsUsed * diskStructure->sectorSize;
for (child = TAILQ_NEXT(node->dot_dot_record, cn_next_child);
child != NULL; child = TAILQ_NEXT(child, cn_next_child)) {
/* Directories need recursive call */
if (S_ISDIR(child->node->type)) {
r = cd9660_compute_offsets(diskStructure, child,
used_bytes + startOffset);
if (r != -1)
used_bytes += r;
else
return -1;
}
}
/* Explicitly set the . and .. records */
cd9660_populate_dot_records(diskStructure, node);
/* Finally, do another iteration to write the file data*/
for (child = TAILQ_NEXT(node->dot_dot_record, cn_next_child);
child != NULL;
child = TAILQ_NEXT(child, cn_next_child)) {
/* Files need extent set */
if (S_ISDIR(child->node->type))
continue;
child->fileRecordSize =
cd9660_compute_record_size(diskStructure, child);
child->fileSectorsUsed =
CD9660_BLOCKS(diskStructure->sectorSize,
child->fileDataLength);
inode = child->node->inode;
if ((inode->flags & FI_ALLOCATED) == 0) {
inode->ino =
CD9660_BLOCKS(diskStructure->sectorSize,
used_bytes + startOffset);
inode->flags |= FI_ALLOCATED;
used_bytes += child->fileSectorsUsed *
diskStructure->sectorSize;
} else {
INODE_WARNX(("%s: already allocated inode %d "
"data sectors at %" PRIu32, __func__,
(int)inode->st.st_ino, inode->ino));
}
child->fileDataSector = inode->ino;
cd9660_bothendian_dword(child->fileDataSector,
child->isoDirRecord->extent);
}
}
return used_bytes;
}
#if 0
/* Might get rid of this func */
static int
cd9660_copy_stat_info(cd9660node *from, cd9660node *to, int file)
{
to->node->inode->st.st_dev = 0;
to->node->inode->st.st_ino = 0;
to->node->inode->st.st_size = 0;
to->node->inode->st.st_blksize = from->node->inode->st.st_blksize;
to->node->inode->st.st_atime = from->node->inode->st.st_atime;
to->node->inode->st.st_mtime = from->node->inode->st.st_mtime;
to->node->inode->st.st_ctime = from->node->inode->st.st_ctime;
to->node->inode->st.st_uid = from->node->inode->st.st_uid;
to->node->inode->st.st_gid = from->node->inode->st.st_gid;
to->node->inode->st.st_mode = from->node->inode->st.st_mode;
/* Clear out type */
to->node->inode->st.st_mode = to->node->inode->st.st_mode & ~(S_IFMT);
if (file)
to->node->inode->st.st_mode |= S_IFREG;
else
to->node->inode->st.st_mode |= S_IFDIR;
return 1;
}
#endif
static cd9660node *
cd9660_create_virtual_entry(iso9660_disk *diskStructure, const char *name,
cd9660node *parent, int file, int insert)
{
cd9660node *temp;
fsnode * tfsnode;
assert(parent != NULL);
temp = cd9660_allocate_cd9660node();
if (temp == NULL)
return NULL;
tfsnode = emalloc(sizeof(*tfsnode));
tfsnode->name = estrdup(name);
temp->isoDirRecord = emalloc(sizeof(*temp->isoDirRecord));
cd9660_convert_filename(diskStructure, tfsnode->name,
temp->isoDirRecord->name, file);
temp->node = tfsnode;
temp->parent = parent;
if (insert) {
if (temp->parent != NULL) {
temp->level = temp->parent->level + 1;
if (!TAILQ_EMPTY(&temp->parent->cn_children))
cd9660_sorted_child_insert(temp->parent, temp);
else
TAILQ_INSERT_HEAD(&temp->parent->cn_children,
temp, cn_next_child);
}
}
if (parent->node != NULL) {
tfsnode->type = parent->node->type;
}
/* Clear out file type bits */
tfsnode->type &= ~(S_IFMT);
if (file)
tfsnode->type |= S_IFREG;
else
tfsnode->type |= S_IFDIR;
/* Indicate that there is no spec entry (inode) */
tfsnode->flags &= ~(FSNODE_F_HASSPEC);
#if 0
cd9660_copy_stat_info(parent, temp, file);
#endif
return temp;
}
static cd9660node *
cd9660_create_file(iso9660_disk *diskStructure, const char *name,
cd9660node *parent, cd9660node *me)
{
cd9660node *temp;
temp = cd9660_create_virtual_entry(diskStructure, name, parent, 1, 1);
if (temp == NULL)
return NULL;
temp->fileDataLength = 0;
temp->type = CD9660_TYPE_FILE | CD9660_TYPE_VIRTUAL;
temp->node->inode = ecalloc(1, sizeof(*temp->node->inode));
*temp->node->inode = *me->node->inode;
if (cd9660_translate_node_common(diskStructure, temp) == 0)
return NULL;
return temp;
}
/*
* Create a new directory which does not exist on disk
* @param const char * name The name to assign to the directory
* @param const char * parent Pointer to the parent directory
* @returns cd9660node * Pointer to the new directory
*/
static cd9660node *
cd9660_create_directory(iso9660_disk *diskStructure, const char *name,
cd9660node *parent, cd9660node *me)
{
cd9660node *temp;
temp = cd9660_create_virtual_entry(diskStructure, name, parent, 0, 1);
if (temp == NULL)
return NULL;
temp->node->type |= S_IFDIR;
temp->type = CD9660_TYPE_DIR | CD9660_TYPE_VIRTUAL;
temp->node->inode = ecalloc(1, sizeof(*temp->node->inode));
*temp->node->inode = *me->node->inode;
if (cd9660_translate_node_common(diskStructure, temp) == 0)
return NULL;
return temp;
}
static cd9660node *
cd9660_create_special_directory(iso9660_disk *diskStructure, u_char type,
cd9660node *parent)
{
cd9660node *temp, *first;
char na[2];
assert(parent != NULL);
if (type == CD9660_TYPE_DOT)
na[0] = 0;
else if (type == CD9660_TYPE_DOTDOT)
na[0] = 1;
else
return 0;
na[1] = 0;
if ((temp = cd9660_create_virtual_entry(diskStructure, na, parent,
0, 0)) == NULL)
return NULL;
temp->parent = parent;
temp->type = type;
temp->isoDirRecord->length[0] = 34;
/* Dot record is always first */
if (type == CD9660_TYPE_DOT) {
parent->dot_record = temp;
TAILQ_INSERT_HEAD(&parent->cn_children, temp, cn_next_child);
/* DotDot should be second */
} else if (type == CD9660_TYPE_DOTDOT) {
parent->dot_dot_record = temp;
/*
* If the first child is the dot record, insert
* this second. Otherwise, insert it at the head.
*/
if ((first = TAILQ_FIRST(&parent->cn_children)) == NULL ||
(first->type & CD9660_TYPE_DOT) == 0) {
TAILQ_INSERT_HEAD(&parent->cn_children, temp,
cn_next_child);
} else {
TAILQ_INSERT_AFTER(&parent->cn_children, first, temp,
cn_next_child);
}
}
return temp;
}
static int
cd9660_add_generic_bootimage(iso9660_disk *diskStructure, const char *bootimage)
{
struct stat stbuf;
assert(bootimage != NULL);
if (*bootimage == '\0') {
warnx("Error: Boot image must be a filename");
return 0;
}
diskStructure->generic_bootimage = estrdup(bootimage);
/* Get information about the file */
if (lstat(diskStructure->generic_bootimage, &stbuf) == -1)
err(EXIT_FAILURE, "%s: lstat(\"%s\")", __func__,
diskStructure->generic_bootimage);
if (stbuf.st_size > 32768) {
warnx("Error: Boot image must be no greater than 32768 bytes");
return 0;
}
if (diskStructure->verbose_level > 0) {
printf("Generic boot image image has size %lld\n",
(long long)stbuf.st_size);
}
diskStructure->has_generic_bootimage = 1;
return 1;
}
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