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libisofs/demo/iso_modify.c

132 lines
3.2 KiB

/*
* Little program to show how to modify an iso image.
*/
#include "libisofs.h"
#include "libburn/libburn.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <err.h>
void usage(char **argv)
{
printf("%s [OPTIONS] IMAGE DIRECTORY OUTPUT\n", argv[0]);
}
int main(int argc, char **argv)
{
int result;
IsoImage *image;
IsoDataSource *src;
struct burn_source *burn_src;
unsigned char buf[2048];
FILE *fd;
Ecma119WriteOpts opts = {
1, /* level */
1, /* rockridge */
0, /* joliet */
0, /* iso1999 */
0, /* omit_version_numbers */
0, /* allow_deep_paths */
0, /* allow_longer_paths */
0, /* max_37_char_filenames */
0, /* no_force_dots */
0, /* allow_lowercase */
0, /* allow_full_ascii */
0, /* joliet_longer_paths */
1, /* sort files */
0, /* replace_dir_mode */
0, /* replace_file_mode */
0, /* replace_uid */
0, /* replace_gid */
0, /* dir_mode */
0, /* file_mode */
0, /* uid */
0, /* gid */
NULL, /* output charset */
0, /* appendable */
0, /* ms_block */
NULL, /* overwrite */
1024 /* fifo_size */
};
struct iso_read_opts ropts = {
0, /* block */
0, /* norock */
0, /* nojoliet */
0, /* noiso1999 */
0, /* preferjoliet */
0, /* uid; */
0, /* gid; */
0, /* mode */
"UTF-8" /* input_charset */
};
if (argc < 4) {
usage(argv);
return 1;
}
fd = fopen(argv[3], "w");
if (!fd) {
err(1, "error opening output file");
}
iso_init();
iso_set_msgs_severities("NEVER", "ALL", "");
/* create the data source to accesss previous image */
result = iso_data_source_new_from_file(argv[1], &src);
if (result < 0) {
printf ("Error creating data source\n");
return 1;
}
/* create the image context */
result = iso_image_new("volume_id", &image);
if (result < 0) {
printf ("Error creating image\n");
return 1;
}
iso_tree_set_follow_symlinks(image, 0);
iso_tree_set_ignore_hidden(image, 0);
iso_tree_set_stop_on_error(image, 0);
/* import previous image */
result = iso_image_import(image, src, &ropts, NULL);
iso_data_source_unref(src);
if (result < 0) {
printf ("Error importing previous session %d\n", result);
return 1;
}
/* add new dir */
result = iso_tree_add_dir_rec(image, iso_image_get_root(image), argv[2]);
if (result < 0) {
printf ("Error adding directory %d\n", result);
return 1;
}
/* generate a new image with both previous and added contents */
result = iso_image_create_burn_source(image, &opts, &burn_src);
if (result < 0) {
printf ("Cant create image, error %d\n", result);
return 1;
}
while (burn_src->read(burn_src, buf, 2048) == 2048) {
fwrite(buf, 1, 2048, fd);
}
fclose(fd);
burn_src->free_data(burn_src);
free(burn_src);
iso_image_unref(image);
iso_finish();
return 0;
}