diff options
Diffstat (limited to 'extras')
| -rw-r--r-- | extras/scsi_id/scsi_serial.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/extras/scsi_id/scsi_serial.c b/extras/scsi_id/scsi_serial.c index d1b1d94f53..14955e676c 100644 --- a/extras/scsi_id/scsi_serial.c +++ b/extras/scsi_id/scsi_serial.c @@ -558,6 +558,27 @@ static int check_fill_0x83_id(struct sysfs_device *scsi_dev, return 0; } +/* Extract the raw binary from VPD 0x83 pre-SPC devices */ +static int check_fill_0x83_prespc3(struct sysfs_device *scsi_dev, + unsigned char *page_83, + const struct scsi_id_search_values + *id_search, char *serial, int max_len) +{ + int i, j; + + serial[0] = hex_str[id_search->id_type]; + /* serial has been memset to zero before */ + j = strlen(serial); /* j = 1; */ + + for (i = 0; i < page_83[3]; ++i) { + serial[j++] = hex_str[(page_83[4+i] & 0xf0) >> 4]; + serial[j++] = hex_str[ page_83[4+i] & 0x0f]; + } + dprintf("using pre-spc3-83 for %s.\n", scsi_dev->name); + return 0; +} + + /* Get device identification VPD page */ static int do_scsi_page83_inquiry(struct sysfs_device *scsi_dev, int fd, char *serial, int len) @@ -585,6 +606,33 @@ static int do_scsi_page83_inquiry(struct sysfs_device *scsi_dev, int fd, */ /* + * Model 4, 5, and (some) model 6 EMC Symmetrix devices return + * a page 83 reply according to SCSI-2 format instead of SPC-2/3. + * + * The SCSI-2 page 83 format returns an IEEE WWN in binary + * encoded hexi-decimal in the 16 bytes following the initial + * 4-byte page 83 reply header. + * + * Both the SPC-2 and SPC-3 formats return an IEEE WWN as part + * of an Identification descriptor. The 3rd byte of the first + * Identification descriptor is a reserved (BSZ) byte field. + * + * Reference the 7th byte of the page 83 reply to determine + * whether the reply is compliant with SCSI-2 or SPC-2/3 + * specifications. A zero value in the 7th byte indicates + * an SPC-2/3 conformant reply, (i.e., the reserved field of the + * first Identification descriptor). This byte will be non-zero + * for a SCSI-2 conformant page 83 reply from these EMC + * Symmetrix models since the 7th byte of the reply corresponds + * to the 4th and 5th nibbles of the 6-byte OUI for EMC, that is, + * 0x006048. + */ + + if (page_83[6] != 0) + return check_fill_0x83_prespc3(scsi_dev, page_83, + id_search_list, serial, len); + + /* * Search for a match in the prioritized id_search_list. */ for (id_ind = 0; |