115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/*
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* Little program to show how to create a multisession iso image.
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*/
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#include "libisofs.h"
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#include "libburn/libburn.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <err.h>
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void usage(char **argv)
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{
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printf("%s LSS NWA DISC DIRECTORY OUTPUT\n", argv[0]);
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}
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int main(int argc, char **argv)
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{
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int result;
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IsoImage *image;
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IsoDataSource *src;
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struct burn_source *burn_src;
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unsigned char buf[2048];
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FILE *fd;
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IsoWriteOpts *opts;
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IsoReadOpts *ropts;
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uint32_t ms_block;
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if (argc < 6) {
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usage(argv);
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return 1;
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}
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fd = fopen(argv[5], "w");
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if (!fd) {
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err(1, "error opening output file");
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}
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iso_init();
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iso_set_msgs_severities("NEVER", "ALL", "");
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/* create the data source to accesss previous image */
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result = iso_data_source_new_from_file(argv[3], &src);
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if (result < 0) {
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printf ("Error creating data source\n");
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return 1;
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}
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/* create the image context */
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result = iso_image_new("volume_id", &image);
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if (result < 0) {
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printf ("Error creating image\n");
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return 1;
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}
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iso_tree_set_follow_symlinks(image, 0);
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iso_tree_set_ignore_hidden(image, 0);
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/* import previous image */
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result = iso_read_opts_new(&ropts, 0);
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if (result < 0) {
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fprintf(stderr, "Error creating read options\n");
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return 1;
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}
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iso_read_opts_set_start_block(ropts, atoi(argv[1]));
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result = iso_image_import(image, src, ropts, NULL);
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iso_read_opts_free(ropts);
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iso_data_source_unref(src);
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if (result < 0) {
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printf ("Error importing previous session %d\n", result);
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return 1;
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}
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/* add new dir */
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result = iso_tree_add_dir_rec(image, iso_image_get_root(image), argv[4]);
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if (result < 0) {
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printf ("Error adding directory %d\n", result);
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return 1;
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}
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/* generate a multisession image with new contents */
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result = iso_write_opts_new(&opts, 1);
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if (result < 0) {
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printf("Cant create write opts, error %d\n", result);
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return 1;
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}
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/* round up to 32kb aligment = 16 block */
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ms_block = atoi(argv[2]);
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iso_write_opts_set_ms_block(opts, ms_block);
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iso_write_opts_set_appendable(opts, 1);
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result = iso_image_create_burn_source(image, opts, &burn_src);
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if (result < 0) {
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printf ("Cant create image, error %d\n", result);
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return 1;
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}
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iso_write_opts_free(opts);
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while (burn_src->read_xt(burn_src, buf, 2048) == 2048) {
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fwrite(buf, 1, 2048, fd);
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}
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fclose(fd);
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burn_src->free_data(burn_src);
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free(burn_src);
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iso_image_unref(image);
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iso_finish();
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return 0;
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}
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