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New API function iso_write_opts_set_part_offset() controls creation of

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an MBR with a first partiton table entry that bears non-zero start address.
A second set of volume descriptors and directory tree+tables gets created
which can be used to mount the image at the partition start.
Not yet implemented for second set: ISO 9660:1999, MD5 checksums.
This commit is contained in:
Thomas Schmitt
2010-09-05 12:43:48 +02:00
parent 95121e2f9f
commit 017dcb39f2
13 changed files with 879 additions and 150 deletions
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8
libisofs/eltorito.c
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@@ -942,7 +942,7 @@ int catalog_stream_new(Ecma119Image *target, IsoStream **stream)
return ISO_OUT_OF_MEM;
}
data = calloc(1, sizeof(struct catalog_stream));
if (str == NULL) {
if (data == NULL) {
free(str);
return ISO_OUT_OF_MEM;
}
@@ -1107,6 +1107,7 @@ int eltorito_writer_compute_data_blocks(IsoImageWriter *writer)
}
ret = iso_stream_open(original);
if (ret < 0) {
free(buf);
return ret;
}
ret = iso_stream_read(original, buf, size);
@@ -1157,7 +1158,10 @@ int eltorito_writer_write_vol_desc(IsoImageWriter *writer)
memcpy(vol.std_identifier, "CD001", 5);
vol.vol_desc_version[0] = 1;
memcpy(vol.boot_sys_id, "EL TORITO SPECIFICATION", 23);
iso_lsb(vol.boot_catalog, t->cat->sections[0].block, 4);
/* TWINTREE: t->cat->sections[0].block - t->eff_partition_offset */
iso_lsb(vol.boot_catalog,
t->cat->sections[0].block - t->eff_partition_offset, 4);
return iso_write(t, &vol, sizeof(struct ecma119_boot_rec_vol_desc));
}