Add support for ISO-9660:1999.
Vreixo Formoso
15 years ago
parent
46507e68aa
commit
5ed68d20e9
@ -0,0 +1,799 @@
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/*
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* Copyright (c) 2007 Vreixo Formoso
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*
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* This file is part of the libisofs project; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation. See COPYING file for details.
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*/
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#include "iso1999.h"
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#include "messages.h"
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#include "writer.h"
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#include "error.h"
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#include "image.h"
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#include "filesrc.h"
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#include "eltorito.h"
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#include <stdlib.h>
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#include <string.h>
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static
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char *get_iso1999_name(Ecma119Image *t, const char *str)
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{
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int ret;
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char *name;
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if (str == NULL) {
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/* not an error, can be root node */
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return NULL;
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}
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if (!strcmp(t->input_charset, t->output_charset)) {
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/* no conversion needed */
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name = strdup(str);
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} else {
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ret = strconv(str, t->input_charset, t->output_charset, &name);
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if (ret < 0) {
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iso_msg_sorry(t->image->messenger, LIBISO_CHARSET_ERROR,
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"Charset conversion error. Can't convert %s from %s to %s",
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str, t->input_charset, t->output_charset);
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/* use the original name, it's the best we can do */
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name = strdup(str);
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}
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}
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/* ISO 9660:1999 7.5.1 */
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if (strlen(name) > 207) {
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name[207] = '\0';
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}
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return name;
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}
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static
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void iso1999_node_free(Iso1999Node *node)
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{
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if (node == NULL) {
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return;
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}
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if (node->type == ISO1999_DIR) {
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int i;
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for (i = 0; i < node->info.dir->nchildren; i++) {
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iso1999_node_free(node->info.dir->children[i]);
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}
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free(node->info.dir->children);
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free(node->info.dir);
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}
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iso_node_unref(node->node);
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free(node->name);
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free(node);
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}
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/**
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* Create a low level ISO 9660:1999 node
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* @return
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* 1 success, 0 ignored, < 0 error
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*/
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static
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int create_node(Ecma119Image *t, IsoNode *iso, Iso1999Node **node)
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{
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int ret;
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Iso1999Node *n;
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n = calloc(1, sizeof(Iso1999Node));
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if (n == NULL) {
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return ISO_MEM_ERROR;
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}
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if (iso->type == LIBISO_DIR) {
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IsoDir *dir = (IsoDir*) iso;
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n->info.dir = calloc(1, sizeof(struct iso1999_dir_info));
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if (n->info.dir == NULL) {
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free(n);
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return ISO_MEM_ERROR;
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}
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n->info.dir->children = calloc(sizeof(void*), dir->nchildren);
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if (n->info.dir->children == NULL) {
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free(n->info.dir);
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free(n);
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return ISO_MEM_ERROR;
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}
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n->type = ISO1999_DIR;
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} else if (iso->type == LIBISO_FILE) {
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/* it's a file */
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off_t size;
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IsoFileSrc *src;
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IsoFile *file = (IsoFile*) iso;
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size = iso_stream_get_size(file->stream);
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if (size > (off_t)0xffffffff) {
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iso_msg_note(t->image->messenger, LIBISO_FILE_IGNORED,
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"File \"%s\" can't be added to image because is "
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"greater than 4GB", iso->name);
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free(n);
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return 0;
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}
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ret = iso_file_src_create(t, file, &src);
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if (ret < 0) {
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free(n);
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return ret;
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}
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n->info.file = src;
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n->type = ISO1999_FILE;
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} else if (iso->type == LIBISO_BOOT) {
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/* it's a el-torito boot catalog, that we write as a file */
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IsoFileSrc *src;
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ret = el_torito_catalog_file_src_create(t, &src);
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if (ret < 0) {
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free(n);
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return ret;
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}
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n->info.file = src;
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n->type = ISO1999_FILE;
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} else {
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/* should never happen */
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free(n);
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return ISO_ERROR;
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}
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/* take a ref to the IsoNode */
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n->node = iso;
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iso_node_ref(iso);
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*node = n;
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return ISO_SUCCESS;
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}
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/**
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* Create the low level ISO 9660:1999 tree from the high level ISO tree.
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*
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* @return
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* 1 success, 0 file ignored, < 0 error
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*/
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static
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int create_tree(Ecma119Image *t, IsoNode *iso, Iso1999Node **tree, int pathlen)
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{
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int ret, max_path;
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Iso1999Node *node = NULL;
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char *iso_name = NULL;
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if (t == NULL || iso == NULL || tree == NULL) {
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return ISO_NULL_POINTER;
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}
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if (iso->hidden & LIBISO_HIDE_ON_1999) {
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/* file will be ignored */
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return 0;
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}
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iso_name = get_iso1999_name(t, iso->name);
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max_path = pathlen + 1 + (iso_name ? strlen(iso_name): 0);
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if (!t->allow_longer_paths && max_path > 255) {
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iso_msg_note(t->image->messenger, LIBISO_FILE_IGNORED,
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"File \"%s\" can't be added to ISO 9660:1999 tree, "
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"because its path length is larger than 255", iso->name);
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free(iso_name);
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return 0;
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}
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switch (iso->type) {
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case LIBISO_FILE:
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ret = create_node(t, iso, &node);
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break;
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case LIBISO_DIR:
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{
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IsoNode *pos;
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IsoDir *dir = (IsoDir*)iso;
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ret = create_node(t, iso, &node);
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if (ret < 0) {
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free(iso_name);
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return ret;
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}
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pos = dir->children;
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while (pos) {
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int cret;
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Iso1999Node *child;
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cret = create_tree(t, pos, &child, max_path);
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if (cret < 0) {
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/* error */
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iso1999_node_free(node);
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ret = cret;
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break;
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} else if (cret == ISO_SUCCESS) {
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/* add child to this node */
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int nchildren = node->info.dir->nchildren++;
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node->info.dir->children[nchildren] = child;
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child->parent = node;
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}
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pos = pos->next;
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}
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}
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break;
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case LIBISO_BOOT:
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if (t->eltorito) {
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ret = create_node(t, iso, &node);
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} else {
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/* log and ignore */
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iso_msg_note(t->image->messenger, LIBISO_FILE_IGNORED,
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"El-Torito catalog found on a image without El-Torito.",
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iso->name);
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ret = 0;
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}
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break;
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case LIBISO_SYMLINK:
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case LIBISO_SPECIAL:
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iso_msg_note(t->image->messenger, LIBISO_FILE_IGNORED,
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"Can't add %s to ISO 9660:1999 tree. This kind of files "
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"can only be added to a Rock Ridget tree. Skipping.",
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iso->name);
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ret = 0;
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break;
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default:
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/* should never happen */
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return ISO_ERROR;
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}
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if (ret <= 0) {
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free(iso_name);
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return ret;
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}
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node->name = iso_name;
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*tree = node;
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return ISO_SUCCESS;
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}
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static int
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cmp_node(const void *f1, const void *f2)
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{
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Iso1999Node *f = *((Iso1999Node**)f1);
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Iso1999Node *g = *((Iso1999Node**)f2);
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/**
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* TODO strcmp do not does exactly what ISO 9660:1999, 9.3, as characters
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* < 0x20 " " are allowed, so name len must be taken into accout
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*/
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return strcmp(f->name, g->name);
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}
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/**
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* Sort the entries inside an ISO 9660:1999 directory, according to
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* ISO 9660:1999, 9.3
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*/
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static
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void sort_tree(Iso1999Node *root)
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{
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size_t i;
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qsort(root->info.dir->children, root->info.dir->nchildren,
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sizeof(void*), cmp_node);
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for (i = 0; i < root->info.dir->nchildren; i++) {
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Iso1999Node *child = root->info.dir->children[i];
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if (child->type == ISO1999_DIR)
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sort_tree(child);
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}
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}
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static
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int iso1999_tree_create(Ecma119Image *t)
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{
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int ret;
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Iso1999Node *root;
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if (t == NULL) {
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return ISO_NULL_POINTER;
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}
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ret = create_tree(t, (IsoNode*)t->image->root, &root, 0);
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if (ret <= 0) {
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if (ret == 0) {
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/* unexpected error, root ignored!! This can't happen */
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ret = ISO_ERROR;
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}
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return ret;
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}
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/* the ISO 9660:1999 tree is stored in Ecma119Image target */
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t->iso1999_root = root;
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iso_msg_debug(t->image->messenger, "Sorting the ISO 9660:1999 tree...");
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sort_tree(root);
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//iso_msg_debug(t->image->messenger, "Mangling ISO 9660:1999 names...");
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// FIXME ret = mangle_tree(t, 1);
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return ISO_SUCCESS;
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}
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/**
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* Compute the size of a directory entry for a single node
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*/
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static
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size_t calc_dirent_len(Ecma119Image *t, Iso1999Node *n)
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{
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int ret = n->name ? strlen(n->name) + 33 : 34;
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if (ret % 2)
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ret++;
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return ret;
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}
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/**
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* Computes the total size of all directory entries of a single dir, as
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* stated in ISO 9660:1999, 6.8.1.3
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*/
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static
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size_t calc_dir_size(Ecma119Image *t, Iso1999Node *dir)
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{
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size_t i, len;
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/* size of "." and ".." entries */
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len = 34 + 34;
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for (i = 0; i < dir->info.dir->nchildren; ++i) {
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size_t remaining;
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Iso1999Node *child = dir->info.dir->children[i];
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size_t dirent_len = calc_dirent_len(t, child);
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remaining = BLOCK_SIZE - (len % BLOCK_SIZE);
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if (dirent_len > remaining) {
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/* child directory entry doesn't fit on block */
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len += remaining + dirent_len;
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} else {
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len += dirent_len;
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}
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}
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/*
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* The size of a dir is always a multiple of block size, as we must add
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* the size of the unused space after the last directory record
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* (ISO 9660:1999, 6.8.1.3)
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*/
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len = div_up(len, BLOCK_SIZE) * BLOCK_SIZE;
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/* cache the len */
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dir->info.dir->len = len;
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return len;
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}
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static
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void calc_dir_pos(Ecma119Image *t, Iso1999Node *dir)
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{
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size_t i, len;
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t->iso1999_ndirs++;
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dir->info.dir->block = t->curblock;
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len = calc_dir_size(t, dir);
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t->curblock += div_up(len, BLOCK_SIZE);
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for (i = 0; i < dir->info.dir->nchildren; i++) {
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Iso1999Node *child = dir->info.dir->children[i];
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if (child->type == ISO1999_DIR) {
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calc_dir_pos(t, child);
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}
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}
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}
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/**
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* Compute the length of the path table (ISO 9660:1999, 6.9), in bytes.
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*/
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static
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uint32_t calc_path_table_size(Iso1999Node *dir)
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{
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uint32_t size;
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size_t i;
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/* size of path table for this entry */
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size = 8;
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size += dir->name ? strlen(dir->name) : 2;
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size += (size % 2);
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/* and recurse */
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for (i = 0; i < dir->info.dir->nchildren; i++) {
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Iso1999Node *child = dir->info.dir->children[i];
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if (child->type == ISO1999_DIR) {
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size += calc_path_table_size(child);
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}
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}
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return size;
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}
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static
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int iso1999_writer_compute_data_blocks(IsoImageWriter *writer)
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{
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Ecma119Image *t;
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uint32_t path_table_size;
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if (writer == NULL) {
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return ISO_MEM_ERROR;
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}
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t = writer->target;
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/* compute position of directories */
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iso_msg_debug(t->image->messenger,
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"Computing position of ISO 9660:1999 dir structure");
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t->iso1999_ndirs = 0;
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calc_dir_pos(t, t->iso1999_root);
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/* compute length of pathlist */
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iso_msg_debug(t->image->messenger,
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"Computing length of ISO 9660:1999 pathlist");
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path_table_size = calc_path_table_size(t->iso1999_root);
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/* compute location for path tables */
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t->iso1999_l_path_table_pos = t->curblock;
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t->curblock += div_up(path_table_size, BLOCK_SIZE);
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t->iso1999_m_path_table_pos = t->curblock;
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t->curblock += div_up(path_table_size, BLOCK_SIZE);
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t->iso1999_path_table_size = path_table_size;
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return ISO_SUCCESS;
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}
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/**
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* Write a single directory record (ISO 9660:1999, 9.1).
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*
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* @param file_id
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* if >= 0, we use it instead of the filename (for "." and ".." entries).
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* @param len_fi
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* Computed length of the file identifier.
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*/
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static
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void write_one_dir_record(Ecma119Image *t, Iso1999Node *node, int file_id,
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uint8_t *buf, size_t len_fi)
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{
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uint32_t len;
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uint32_t block;
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uint8_t len_dr; /*< size of dir entry */
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uint8_t *name = (file_id >= 0) ? (uint8_t*)&file_id
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: (uint8_t*)node->name;
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struct ecma119_dir_record *rec = (struct ecma119_dir_record*)buf;
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len_dr = 33 + len_fi + (len_fi % 2 ? 0 : 1);
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memcpy(rec->file_id, name, len_fi);
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if (node->type == ISO1999_DIR) {
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/* use the cached length */
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len = node->info.dir->len;
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block = node->info.dir->block;
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} else if (node->type == ISO1999_FILE) {
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len = iso_file_src_get_size(node->info.file);
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block = node->info.file->block;
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} else {
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/*
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* for nodes other than files and dirs, we set both
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* len and block to 0
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*/
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len = 0;
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block = 0;
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}
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/*
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* For ".." entry we need to write the parent info!
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*/
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if (file_id == 1 && node->parent)
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node = node->parent;
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rec->len_dr[0] = len_dr;
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iso_bb(rec->block, block, 4);
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iso_bb(rec->length, len, 4);
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iso_datetime_7(rec->recording_time, t->now);
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rec->flags[0] = (node->type == ISO1999_DIR) ? 2 : 0;
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iso_bb(rec->vol_seq_number, 1, 2);
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rec->len_fi[0] = len_fi;
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}
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/**
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* Write the enhanced volume descriptor (ISO/IEC 9660:1999, 8.5)
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*/
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static
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int iso1999_writer_write_vol_desc(IsoImageWriter *writer)
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{
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IsoImage *image;
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Ecma119Image *t;
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/* The enhanced volume descriptor is like the sup vol desc */
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struct ecma119_sup_vol_desc vol;
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char *vol_id = NULL, *pub_id = NULL, *data_id = NULL;
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char *volset_id = NULL, *system_id = NULL, *application_id = NULL;
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char *copyright_file_id = NULL, *abstract_file_id = NULL;
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char *biblio_file_id = NULL;
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|
||||
if (writer == NULL) {
|
||||
return ISO_MEM_ERROR;
|
||||
}
|
||||
|
||||
t = writer->target;
|
||||
image = t->image;
|
||||
|
||||
iso_msg_debug(image->messenger, "Write Enhanced Vol Desc (ISO 9660:1999)");
|
||||
|
||||
memset(&vol, 0, sizeof(struct ecma119_sup_vol_desc));
|
||||
|
||||
vol_id = get_iso1999_name(t, image->volume_id);
|
||||
str2a_char(t->input_charset, image->publisher_id, &pub_id);
|
||||
str2a_char(t->input_charset, image->data_preparer_id, &data_id);
|
||||
volset_id = get_iso1999_name(t, image->volset_id);
|
||||
|
||||
str2a_char(t->input_charset, image->system_id, &system_id);
|
||||
str2a_char(t->input_charset, image->application_id, &application_id);
|
||||
copyright_file_id = get_iso1999_name(t, image->copyright_file_id);
|
||||
abstract_file_id = get_iso1999_name(t, image->abstract_file_id);
|
||||
biblio_file_id = get_iso1999_name(t, image->biblio_file_id);
|
||||
|
||||
vol.vol_desc_type[0] = 2;
|
||||
memcpy(vol.std_identifier, "CD001", 5);
|
||||
|
||||
/* descriptor version is 2 (ISO/IEC 9660:1999, 8.5.2) */
|
||||
vol.vol_desc_version[0] = 2;
|
||||
strncpy_pad((char*)vol.volume_id, vol_id, 32);
|
||||
|
||||
iso_bb(vol.vol_space_size, t->vol_space_size, 4);
|
||||
iso_bb(vol.vol_set_size, 1, 2);
|
||||
iso_bb(vol.vol_seq_number, 1, 2);
|
||||
iso_bb(vol.block_size, BLOCK_SIZE, 2);
|
||||
iso_bb(vol.path_table_size, t->iso1999_path_table_size, 4);
|
||||
iso_lsb(vol.l_path_table_pos, t->iso1999_l_path_table_pos, 4);
|
||||
iso_msb(vol.m_path_table_pos, t->iso1999_m_path_table_pos, 4);
|
||||
|
||||
write_one_dir_record(t, t->iso1999_root, 0, vol.root_dir_record, 1);
|
||||
|
||||
strncpy_pad((char*)vol.vol_set_id, volset_id, 128);
|
||||
strncpy_pad((char*)vol.publisher_id, pub_id, 128);
|
||||
strncpy_pad((char*)vol.data_prep_id, data_id, 128);
|
||||
|
||||
strncpy_pad((char*)vol.system_id, system_id, 32);
|
||||
|
||||
strncpy_pad((char*)vol.application_id, application_id, 128);
|
||||
strncpy_pad((char*)vol.copyright_file_id, copyright_file_id, 37);
|
||||
strncpy_pad((char*)vol.abstract_file_id, abstract_file_id, 37);
|
||||
strncpy_pad((char*)vol.bibliographic_file_id, biblio_file_id, 37);
|
||||
|
||||
iso_datetime_17(vol.vol_creation_time, t->now);
|
||||
iso_datetime_17(vol.vol_modification_time, t->now);
|
||||
iso_datetime_17(vol.vol_effective_time, t->now);
|
||||
vol.file_structure_version[0] = 1;
|
||||
|
||||
free(vol_id);
|
||||
free(volset_id);
|
||||
free(pub_id);
|
||||
free(data_id);
|
||||
free(system_id);
|
||||
free(application_id);
|
||||
free(copyright_file_id);
|
||||
free(abstract_file_id);
|
||||
free(biblio_file_id);
|
||||
|
||||
/* Finally write the Volume Descriptor */
|
||||
return iso_write(t, &vol, sizeof(struct ecma119_sup_vol_desc));
|
||||
}
|
||||
|
||||
static
|
||||
int write_one_dir(Ecma119Image *t, Iso1999Node *dir)
|
||||
{
|
||||
int ret;
|
||||
uint8_t buffer[BLOCK_SIZE];
|
||||
size_t i;
|
||||
size_t fi_len, len;
|
||||
|
||||
/* buf will point to current write position on buffer */
|
||||
uint8_t *buf = buffer;
|
||||
|
||||
/* initialize buffer with 0s */
|
||||
memset(buffer, 0, BLOCK_SIZE);
|
||||
|
||||
/* write the "." and ".." entries first */
|
||||
write_one_dir_record(t, dir, 0, buf, 1);
|
||||
buf += 34;
|
||||
write_one_dir_record(t, dir, 1, buf, 1);
|
||||
buf += 34;
|
||||
|
||||
for (i = 0; i < dir->info.dir->nchildren; i++) {
|
||||
Iso1999Node *child = dir->info.dir->children[i];
|
||||
|
||||
/* compute len of directory entry */
|
||||
fi_len = strlen(child->name);
|
||||
len = fi_len + 33 + (fi_len % 2 ? 0 : 1);
|
||||
|
||||
if ( (buf + len - buffer) > BLOCK_SIZE) {
|
||||
/* dir doesn't fit in current block */
|
||||
ret = iso_write(t, buffer, BLOCK_SIZE);
|
||||
if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
memset(buffer, 0, BLOCK_SIZE);
|
||||
buf = buffer;
|
||||
}
|
||||
/* write the directory entry in any case */
|
||||
write_one_dir_record(t, child, -1, buf, fi_len);
|
||||
buf += len;
|
||||
}
|
||||
|
||||
/* write the last block */
|
||||
ret = iso_write(t, buffer, BLOCK_SIZE);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static
|
||||
int write_dirs(Ecma119Image *t, Iso1999Node *root)
|
||||
{
|
||||
int ret;
|
||||
size_t i;
|
||||
|
||||
/* write all directory entries for this dir */
|
||||
ret = write_one_dir(t, root);
|
||||
if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* recurse */
|
||||
for (i = 0; i < root->info.dir->nchildren; i++) {
|
||||
Iso1999Node *child = root->info.dir->children[i];
|
||||
if (child->type == ISO1999_DIR) {
|
||||
ret = write_dirs(t, child);
|
||||
if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
}
|
||||
return ISO_SUCCESS;
|
||||
}
|
||||
|
||||
static
|
||||
int write_path_table(Ecma119Image *t, Iso1999Node **pathlist, int l_type)
|
||||
{
|
||||
size_t i, len;
|
||||
uint8_t buf[256]; /* 256 is just a convenient size larger enought */
|
||||
struct ecma119_path_table_record *rec;
|
||||
void (*write_int)(uint8_t*, uint32_t, int);
|
||||
Iso1999Node *dir;
|
||||
uint32_t path_table_size;
|
||||
int parent = 0;
|
||||
int ret= ISO_SUCCESS;
|
||||
|
||||
path_table_size = 0;
|
||||
write_int = l_type ? iso_lsb : iso_msb;
|
||||
|
||||
for (i = 0; i < t->iso1999_ndirs; i++) {
|
||||
dir = pathlist[i];
|
||||
|
||||
/* find the index of the parent in the table */
|
||||
while ((i) && pathlist[parent] != dir->parent) {
|
||||
parent++;
|
||||
}
|
||||
|
||||
/* write the Path Table Record (ECMA-119, 9.4) */
|
||||
memset(buf, 0, 256);
|
||||
rec = (struct ecma119_path_table_record*) buf;
|
||||
rec->len_di[0] = dir->parent ? (uint8_t) strlen(dir->name) : 1;
|
||||
rec->len_xa[0] = 0;
|
||||
write_int(rec->block, dir->info.dir->block, 4);
|
||||
write_int(rec->parent, parent + 1, 2);
|
||||
if (dir->parent) {
|
||||
memcpy(rec->dir_id, dir->name, rec->len_di[0]);
|
||||
}
|
||||
len = 8 + rec->len_di[0] + (rec->len_di[0] % 2);
|
||||
ret = iso_write(t, buf, len);
|
||||
if (ret < 0) {
|
||||
/* error */
|
||||
return ret;
|
||||
}
|
||||
path_table_size += len;
|
||||
}
|
||||
|
||||
/* we need to fill the last block with zeros */
|
||||
path_table_size %= BLOCK_SIZE;
|
||||
if (path_table_size) {
|
||||
uint8_t zeros[BLOCK_SIZE];
|
||||
len = BLOCK_SIZE - path_table_size;
|
||||
memset(zeros, 0, len);
|
||||
ret = iso_write(t, zeros, len);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static
|
||||
int write_path_tables(Ecma119Image *t)
|
||||
{
|
||||
int ret;
|
||||
size_t i, j, cur;
|
||||
Iso1999Node **pathlist;
|
||||
|
||||
iso_msg_debug(t->image->messenger, "Writing ISO 9660:1999 Path tables");
|
||||
|
||||
/* allocate temporal pathlist */
|
||||
pathlist = malloc(sizeof(void*) * t->iso1999_ndirs);
|
||||
if (pathlist == NULL) {
|
||||
return ISO_MEM_ERROR;
|
||||
}
|
||||
pathlist[0] = t->iso1999_root;
|
||||
cur = 1;
|
||||
|
||||
for (i = 0; i < t->iso1999_ndirs; i++) {
|
||||
Iso1999Node *dir = pathlist[i];
|
||||
for (j = 0; j < dir->info.dir->nchildren; j++) {
|
||||
Iso1999Node *child = dir->info.dir->children[j];
|
||||
if (child->type == ISO1999_DIR) {
|
||||
pathlist[cur++] = child;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Write L Path Table */
|
||||
ret = write_path_table(t, pathlist, 1);
|
||||
if (ret < 0) {
|
||||
goto write_path_tables_exit;
|
||||
}
|
||||
|
||||
/* Write L Path Table */
|
||||
ret = write_path_table(t, pathlist, 0);
|
||||
|
||||
write_path_tables_exit: ;
|
||||
free(pathlist);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static
|
||||
int iso1999_writer_write_data(IsoImageWriter *writer)
|
||||
{
|
||||
int ret;
|
||||
Ecma119Image *t;
|
||||
|
||||
if (writer == NULL) {
|
||||
return ISO_NULL_POINTER;
|
||||
}
|
||||
t = writer->target;
|
||||
|
||||
/* first of all, we write the directory structure */
|
||||
ret = write_dirs(t, t->iso1999_root);
|
||||
if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* and write the path tables */
|
||||
ret = write_path_tables(t);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static
|
||||
int iso1999_writer_free_data(IsoImageWriter *writer)
|
||||
{
|
||||
/* free the ISO 9660:1999 tree */
|
||||
Ecma119Image *t = writer->target;
|
||||
iso1999_node_free(t->iso1999_root);
|
||||
return ISO_SUCCESS;
|
||||
}
|
||||
|
||||
int iso1999_writer_create(Ecma119Image *target)
|
||||
{
|
||||
int ret;
|
||||
IsoImageWriter *writer;
|
||||
|
||||
writer = malloc(sizeof(IsoImageWriter));
|
||||
if (writer == NULL) {
|
||||
return ISO_MEM_ERROR;
|
||||
}
|
||||
|
||||
writer->compute_data_blocks = iso1999_writer_compute_data_blocks;
|
||||
writer->write_vol_desc = iso1999_writer_write_vol_desc;
|
||||
writer->write_data = iso1999_writer_write_data;
|
||||
writer->free_data = iso1999_writer_free_data;
|
||||
writer->data = NULL;
|
||||
writer->target = target;
|
||||
|
||||
iso_msg_debug(target->image->messenger,
|
||||
"Creating low level ISO 9660:1999 tree...");
|
||||
ret = iso1999_tree_create(target);
|
||||
if (ret < 0) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* add this writer to image */
|
||||
target->writers[target->nwriters++] = writer;
|
||||
|
||||
/* we need the volume descriptor */
|
||||
target->curblock++;
|
||||
return ISO_SUCCESS;
|
||||
}
|
||||
Loading…
Reference in New Issue