/*
* 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.
*
*/
/**
* 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;
static int
cd9660_arguments_set_string(const char *val, const char *fieldtitle,
size_t length, char testmode, char * dest)
{
size_t len;
int 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;
}
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 ||
strcmp(name, "platformid") == 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");
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);
/* 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;
/* 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);
/*********** 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;
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
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 */
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;
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 filename 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, dot, semi, digit, digits, temp, powers, multiplier, count;
char *naming;
int maxlength;
char *tmp;
if (diskStructure->verbose_level > 0)
printf("Rename_filename called\n");
/* 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;
/*
* 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;
/* 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;
/*
* 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 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) == 0) {
warnx("Failure in "
"cd9660_rrip_"
"move_directory"
);
(*error) = 1;
return;
}
add = 0;
}
}
/* Do the recursive call on the children */
if (iterator->child != 0) {
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 != 0) {
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;
/*
* Be a little more memory conservative:
* instead of having the TAILQ_ENTRY as part of the cd9660node,
* just create a temporary structure
*/
struct ptq_entry
{
TAILQ_ENTRY(ptq_entry) ptq;
cd9660node *node;
} *n;
#define PTQUEUE_NEW(n,s,r,t){\
n = emalloc(sizeof(struct s)); \
if (n == NULL) \
return r; \
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 */
/* 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.");
}
/*
* 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;
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 (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)
{
/* NEW */
cd9660_filename_conversion_functor conversion_function = 0;
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;
}
/*
* @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);
/*
* 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++;
}
/*
* 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);
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->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;
}
/* 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);
}
