/*
Read a particular block into the global array to be used for further
analysis later.
*/
static int
_cdio_read_block(const CdIo *cdio, int superblock, uint32_t offset,
uint8_t bufnum, track_t track_num)
{
unsigned int track_sec_count = cdio_get_track_sec_count(cdio, track_num);
memset(buffer[bufnum], 0, CDIO_CD_FRAMESIZE);
if ( track_sec_count < superblock) {
cdio_debug("reading block %u skipped track %d has only %u sectors\n",
superblock, track_num, track_sec_count);
return -1;
}
cdio_debug("about to read sector %lu\n",
(long unsigned int) offset+superblock);
if (cdio_get_track_green(cdio, track_num)) {
if (0 > cdio_read_mode2_sector(cdio, buffer[bufnum],
offset+superblock, false))
return -1;
} else {
if (0 > cdio_read_mode1_sector(cdio, buffer[bufnum],
offset+superblock, false))
return -1;
}
return 0;
}
/*!
Get file status for pathname into stat. NULL is returned on error.
*/
iso9660_stat_t *
iso9660_fs_stat (CdIo_t *p_cdio, const char pathname[])
{
iso9660_stat_t *p_root;
char **p_psz_splitpath;
iso9660_stat_t *p_stat;
/* A bit of a hack, we'll assume track 1 contains ISO_PVD_SECTOR.*/
bool b_mode2;
if (!p_cdio) return NULL;
if (!pathname) return NULL;
p_root = _fs_stat_root (p_cdio);
if (!p_root) return NULL;
b_mode2 = cdio_get_track_green(p_cdio, 1);
p_psz_splitpath = _cdio_strsplit (pathname, '/');
p_stat = _fs_stat_traverse (p_cdio, p_root, p_psz_splitpath, b_mode2, false);
free(p_root);
_cdio_strfreev (p_psz_splitpath);
return p_stat;
}
/*
Return a pointer to a ISO 9660 stat buffer or NULL if there's an error
*/
static iso9660_stat_t *
_fs_stat_root (CdIo_t *p_cdio)
{
if (!p_cdio) return NULL;
{
iso_extension_mask_t iso_extension_mask = ISO_EXTENSION_ALL;
generic_img_private_t *p_env = (generic_img_private_t *) p_cdio->env;
bool b_mode2 = cdio_get_track_green(p_cdio, 1);
iso9660_dir_t *p_iso9660_dir;
iso9660_stat_t *p_stat;
if (!p_env->i_joliet_level)
iso_extension_mask &= ~ISO_EXTENSION_JOLIET;
/* FIXME try also with Joliet.*/
if ( !iso9660_fs_read_superblock (p_cdio, iso_extension_mask) ) {
cdio_warn("Could not read ISO-9660 Superblock.");
return NULL;
}
#ifdef HAVE_JOLIET
p_iso9660_dir = p_env->i_joliet_level
? &(p_env->svd.root_directory_record)
: &(p_env->pvd.root_directory_record) ;
#else
p_iso9660_dir = &(p_env->pvd.root_directory_record) ;
#endif
p_stat = _iso9660_dir_to_statbuf (p_iso9660_dir, b_mode2,
p_env->i_joliet_level);
return p_stat;
}
}
/*!
Return true if we have XA data (green, mode2 form1) or
XA data (green, mode2 form2). That is track begins:
sync - header - subheader
12 4 - 8
FIXME: there's gotta be a better design for this and get_track_format?
*/
bool getGreen()
{
return cdio_get_track_green(p_cdio, i_track);
}
