/*
* util_create_guid -- generate GUID based on the guid type
* id_type: SPC_INQUIRY_ID_TYPE_EUI -
* EUI-64 based 16-byte designator format;
* SPC_INQUIRY_ID_TYPE_NAA -
* NAA IEEE Registered Extended designator format.
*
* SPC-4 revision 11 section 7.6.3.5.4 and 7.6.3.6.5.
*
* Note that now this function is always called with parameter
* id_type SPC_INQUIRY_ID_TYPE_NAA, therefore the code for creating
* EUI-64 based 16-byte format GUID is no longer used. But in order
* to keep backward compatiability and for future extension, all the
* code that has been used for creating old GUIDs should be kept, to
* make the format clear for all possible GUIDs targets might have.
*/
Boolean_t
util_create_guid(char **guid, uchar_t id_type)
{
eui_16_t eui;
/*
* We only have room for 32bits of data in the GUID. The hiword/loword
* macros will not work on 64bit variables. The work, but produce
* invalid results on Big Endian based machines.
*/
uint32_t tval = (uint_t)time((time_t *)0);
size_t guid_size;
int i, fd;
/*
* Create the NAA (6) GUID.
*/
if (id_type == SPC_INQUIRY_ID_TYPE_NAA) {
return (util_create_guid_naa(guid));
}
if ((mac_len == 0) && (if_find_mac(NULL) == False)) {
/*
* By default strict GUID generation is enforced. This can
* be disabled by using the correct XML tag in the configuration
* file.
*/
if (enforce_strict_guid == True)
return (False);
/*
* There's no MAC address available and we've even tried
* a second time to get one. So fallback to using a random
* number for the MAC address.
*/
if ((fd = open("/dev/random", O_RDONLY)) < 0)
return (False);
if (read(fd, &eui, sizeof (eui)) != sizeof (eui))
return (False);
(void) close(fd);
eui.e_vers = SUN_EUI_16_VERS;
eui.e_company_id[0] = (SUN_EN >> 16) & 0xff;
eui.e_company_id[1] = (SUN_EN >> 8) & 0xff;
eui.e_company_id[2] = SUN_EN & 0xff;
} else {
Boolean_t
util_create_guid(char **guid)
{
eui_16_t eui;
/*
* We only have room for 32bits of data in the GUID. The hiword/loword
* macros will not work on 64bit variables. The work, but produce
* invalid results on Big Endian based machines.
*/
uint32_t tval = (uint_t)time((time_t *)0);
size_t guid_size;
int i, fd;
if ((mac_len == 0) && (if_find_mac(NULL) == False)) {
/*
* By default strict GUID generation is enforced. This can
* be disabled by using the correct XML tag in the configuration
* file.
*/
if (enforce_strict_guid == True)
return (False);
/*
* There's no MAC address available and we've even tried
* a second time to get one. So fallback to using a random
* number for the MAC address.
*/
if ((fd = open("/dev/random", O_RDONLY)) < 0)
return (False);
if (read(fd, &eui, sizeof (eui)) != sizeof (eui))
return (False);
(void) close(fd);
eui.e_vers = SUN_EUI_16_VERS;
eui.e_company_id[0] = 0;
eui.e_company_id[1] = 0;
eui.e_company_id[2] = SUN_EN;
} else {
bzero(&eui, sizeof (eui));
eui.e_vers = SUN_EUI_16_VERS;
/* ---- [0] & [1] are zero for Sun's IEEE identifier ---- */
eui.e_company_id[2] = SUN_EN;
eui.e_timestamp[0] = hibyte(hiword(tval));
eui.e_timestamp[1] = lobyte(hiword(tval));
eui.e_timestamp[2] = hibyte(loword(tval));
eui.e_timestamp[3] = lobyte(loword(tval));
for (i = 0; i < min(mac_len, sizeof (eui.e_mac)); i++) {
eui.e_mac[i] = mac_addr[i];
}
/*
* To prevent duplicate GUIDs we need to sleep for one
* second here since part of the GUID is a time stamp with
* a one second resolution.
*/
sleep(1);
}
if (tgt_xml_encode((uint8_t *)&eui, sizeof (eui), guid,
&guid_size) == False) {
return (False);
} else
return (True);
}
