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New API call iso_write_opts_set_system_area() acts like mkisofs option -G

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This commit is contained in:
Thomas Schmitt
2010-04-06 14:41:36 +02:00
parent f0f378c38f
commit f13167335a
6 changed files with 218 additions and 39 deletions
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41
libisofs/ecma119.c
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@ -73,6 +73,9 @@ void ecma119_image_free(Ecma119Image *t)
if (t->output_charset != NULL)
free(t->output_charset);
if (t->system_area_data != NULL)
free(t->system_area_data);
#ifdef Libisofs_with_checksumS
if (t->checksum_ctx != NULL) { /* dispose checksum context */
char md5[16];
@ -1127,6 +1130,17 @@ int ecma119_image_new(IsoImage *src, IsoWriteOpts *opts, Ecma119Image **img)
target->eltorito = (src->bootcat == NULL ? 0 : 1);
target->catalog = src->bootcat;
target->system_area_data = NULL;
if(opts->system_area_data != NULL) {
target->system_area_data = calloc(32768, 1);
if (target->system_area_data == NULL) {
ret = ISO_OUT_OF_MEM;
goto target_cleanup;
}
memcpy(target->system_area_data, opts->system_area_data, 32768);
}
target->system_area_options = opts->system_area_options;
target->input_charset = strdup(iso_get_local_charset(0));
if (target->input_charset == NULL) {
ret = ISO_OUT_OF_MEM;
@ -1700,6 +1714,8 @@ void iso_write_opts_free(IsoWriteOpts *opts)
}
free(opts->output_charset);
if(opts->system_area_data != NULL)
free(opts->system_area_data);
free(opts);
}
@ -2085,3 +2101,28 @@ int iso_write_opts_get_data_start(IsoWriteOpts *opts, uint32_t *data_start,
return ISO_SUCCESS;
}
/*
* @param data Either NULL or 32 kB of data. Do not submit less bytes !
* @param options bit0 = apply GRUB protective msdos label
* @param flag bit0 = invalidate any attached system area data
* same as data == NULL
*/
int iso_write_opts_set_system_area(IsoWriteOpts *opts, char data[32768],
int options, int flag)
{
if (data == NULL || (flag & 1)) { /* Disable */
if (opts->system_area_data != NULL)
free(opts->system_area_data);
opts->system_area_data = NULL;
} else {
if (opts->system_area_data == NULL) {
opts->system_area_data = calloc(32768, 1);
if (opts->system_area_data == NULL)
return ISO_OUT_OF_MEM;
}
memcpy(opts->system_area_data, data, 32768);
}
opts->system_area_options = options & 1;
return ISO_SUCCESS;
}