/*!
Read the Primary Volume Descriptor for an ISO 9660 image.
True is returned if read, and false if there was an error.
*/
bool
iso9660_ifs_read_pvd (const iso9660_t *p_iso, /*out*/ iso9660_pvd_t *p_pvd)
{
if (0 == iso9660_iso_seek_read (p_iso, p_pvd, ISO_PVD_SECTOR, 1)) {
cdio_warn ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
return false;
}
return check_pvd(p_pvd);
}
/*!
Read the Primary Volume Descriptor for an ISO 9660 image.
True is returned if read, and false if there was an error.
*/
static bool
iso9660_ifs_read_pvd_loglevel (const iso9660_t *p_iso,
/*out*/ iso9660_pvd_t *p_pvd,
cdio_log_level_t log_level)
{
if (0 == iso9660_iso_seek_read (p_iso, p_pvd, ISO_PVD_SECTOR, 1)) {
cdio_log ( log_level, "error reading PVD sector (%d)", ISO_PVD_SECTOR );
return false;
}
return check_pvd(p_pvd, log_level);
}
/*!
Read the Primary Volume Descriptor for of CD.
*/
bool
iso9660_fs_read_pvd(const CdIo_t *p_cdio, /*out*/ iso9660_pvd_t *p_pvd)
{
/* A bit of a hack, we'll assume track 1 contains ISO_PVD_SECTOR.*/
bool b_mode2;
char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
int i_rc;
switch(cdio_get_track_format(p_cdio, 1)) {
case TRACK_FORMAT_CDI:
case TRACK_FORMAT_XA:
b_mode2 = true;
break;
case TRACK_FORMAT_DATA:
b_mode2 = false;
break;
case TRACK_FORMAT_AUDIO:
case TRACK_FORMAT_PSX:
case TRACK_FORMAT_ERROR:
default:
return false;
}
i_rc = b_mode2
? cdio_read_mode2_sector (p_cdio, buf, ISO_PVD_SECTOR, false)
: cdio_read_mode1_sector (p_cdio, buf, ISO_PVD_SECTOR, false);
if (i_rc) {
cdio_warn ("error reading PVD sector (%d)", ISO_PVD_SECTOR);
return false;
}
/* The size of a PVD or SVD is smaller than a sector. So we
allocated a bigger block above (buf) and now we'll copy just
the part we need to save.
*/
cdio_assert (sizeof(buf) >= sizeof (iso9660_pvd_t));
memcpy(p_pvd, buf, sizeof(iso9660_pvd_t));
return check_pvd(p_pvd);
}
/*!
Read the Primary Volume Descriptor for of CD.
*/
bool
iso9660_fs_read_pvd(const CdIo_t *p_cdio, /*out*/ iso9660_pvd_t *p_pvd)
{
/* A bit of a hack, we'll assume track 1 contains ISO_PVD_SECTOR.*/
char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
driver_return_code_t driver_return =
cdio_read_data_sectors (p_cdio, buf, ISO_PVD_SECTOR, ISO_BLOCKSIZE, 1);
if (DRIVER_OP_SUCCESS != driver_return) {
cdio_warn ("error reading PVD sector (%d) error %d", ISO_PVD_SECTOR,
driver_return);
return false;
}
/* The size of a PVD or SVD is smaller than a sector. So we
allocated a bigger block above (buf) and now we'll copy just
the part we need to save.
*/
cdio_assert (sizeof(buf) >= sizeof (iso9660_pvd_t));
memcpy(p_pvd, buf, sizeof(iso9660_pvd_t));
return check_pvd(p_pvd, CDIO_LOG_WARN);
}
