int
get_target_port_group(int fd)
{
unsigned char buf[128];
struct vpd83_data * vpd83;
struct vpd83_dscr * dscr;
int rc;
memset(buf, 0, sizeof(buf));
rc = do_inquiry(fd, 1, 0x83, buf, sizeof(buf));
if (!rc) {
vpd83 = (struct vpd83_data *) buf;
rc = -RTPG_NO_TPG_IDENTIFIER;
FOR_EACH_VPD83_DSCR(vpd83, dscr) {
if ((((char *) dscr) - ((char *) vpd83)) > sizeof(buf))
break;
if (vpd83_dscr_istype(dscr, IDTYPE_TARGET_PORT_GROUP)) {
struct vpd83_tpg_dscr * p;
if (rc != -RTPG_NO_TPG_IDENTIFIER) {
PRINT_DEBUG("get_target_port_group: "
"more than one TPG identifier "
"found!\n");
continue;
}
p = (struct vpd83_tpg_dscr *) dscr->data;
rc = get_uint16(p->tpg);
}
}
if (rc == -RTPG_NO_TPG_IDENTIFIER) {
PRINT_DEBUG("get_target_port_group: "
"no TPG identifier found!\n");
}
}
int
get_target_port_group(struct path * pp, unsigned int timeout)
{
unsigned char *buf;
struct vpd83_data * vpd83;
struct vpd83_dscr * dscr;
int rc;
int buflen, scsi_buflen;
buflen = 4096;
buf = (unsigned char *)malloc(buflen);
if (!buf) {
PRINT_DEBUG("malloc failed: could not allocate"
"%u bytes\n", buflen);
return -RTPG_RTPG_FAILED;
}
memset(buf, 0, buflen);
rc = get_sysfs_pg83(pp, buf, buflen);
if (rc < 0) {
rc = do_inquiry(pp->fd, 1, 0x83, buf, buflen, timeout);
if (rc < 0)
goto out;
scsi_buflen = (buf[2] << 8 | buf[3]) + 4;
/* Paranoia */
if (scsi_buflen >= USHRT_MAX)
scsi_buflen = USHRT_MAX;
if (buflen < scsi_buflen) {
free(buf);
buf = (unsigned char *)malloc(scsi_buflen);
if (!buf) {
PRINT_DEBUG("malloc failed: could not allocate"
"%u bytes\n", scsi_buflen);
return -RTPG_RTPG_FAILED;
}
buflen = scsi_buflen;
memset(buf, 0, buflen);
rc = do_inquiry(pp->fd, 1, 0x83, buf, buflen, timeout);
if (rc < 0)
goto out;
}
}
vpd83 = (struct vpd83_data *) buf;
rc = -RTPG_NO_TPG_IDENTIFIER;
FOR_EACH_VPD83_DSCR(vpd83, dscr) {
if (vpd83_dscr_istype(dscr, IDTYPE_TARGET_PORT_GROUP)) {
struct vpd83_tpg_dscr *p;
if (rc != -RTPG_NO_TPG_IDENTIFIER) {
PRINT_DEBUG("get_target_port_group: more "
"than one TPG identifier found!\n");
continue;
}
p = (struct vpd83_tpg_dscr *)dscr->data;
rc = get_uint16(p->tpg);
}
}
if (rc == -RTPG_NO_TPG_IDENTIFIER) {
PRINT_DEBUG("get_target_port_group: "
"no TPG identifier found!\n");
}
out:
free(buf);
return rc;
}
