scsi_lib.c (35c0506f27f6e3f278592d631901163cbccce28d) scsi_lib.c (ccf1e0045eea8f98d60fc9327bcb14c958d2e4c7)
1/*
2 * Copyright (C) 1999 Eric Youngdale
3 * Copyright (C) 2014 Christoph Hellwig
4 *
5 * SCSI queueing library.
6 * Initial versions: Eric Youngdale (eric@andante.org).
7 * Based upon conversations with large numbers
8 * of people at Linux Expo.

--- 3258 unchanged lines hidden (view full) ---

3267 * Returns the length of the identification or error on failure.
3268 * If the identifier is longer than the supplied buffer the actual
3269 * identifier length is returned and the buffer is not zero-padded.
3270 */
3271int scsi_vpd_lun_id(struct scsi_device *sdev, char *id, size_t id_len)
3272{
3273 u8 cur_id_type = 0xff;
3274 u8 cur_id_size = 0;
1/*
2 * Copyright (C) 1999 Eric Youngdale
3 * Copyright (C) 2014 Christoph Hellwig
4 *
5 * SCSI queueing library.
6 * Initial versions: Eric Youngdale (eric@andante.org).
7 * Based upon conversations with large numbers
8 * of people at Linux Expo.

--- 3258 unchanged lines hidden (view full) ---

3267 * Returns the length of the identification or error on failure.
3268 * If the identifier is longer than the supplied buffer the actual
3269 * identifier length is returned and the buffer is not zero-padded.
3270 */
3271int scsi_vpd_lun_id(struct scsi_device *sdev, char *id, size_t id_len)
3272{
3273 u8 cur_id_type = 0xff;
3274 u8 cur_id_size = 0;
3275 unsigned char *d, *cur_id_str;
3276 unsigned char __rcu *vpd_pg83;
3275 const unsigned char *d, *cur_id_str;
3276 const struct scsi_vpd *vpd_pg83;
3277 int id_size = -EINVAL;
3278
3279 rcu_read_lock();
3280 vpd_pg83 = rcu_dereference(sdev->vpd_pg83);
3281 if (!vpd_pg83) {
3282 rcu_read_unlock();
3283 return -ENXIO;
3284 }

--- 14 unchanged lines hidden (view full) ---

3299
3300 /* The id string must be at least 20 bytes + terminating NULL byte */
3301 if (id_len < 21) {
3302 rcu_read_unlock();
3303 return -EINVAL;
3304 }
3305
3306 memset(id, 0, id_len);
3277 int id_size = -EINVAL;
3278
3279 rcu_read_lock();
3280 vpd_pg83 = rcu_dereference(sdev->vpd_pg83);
3281 if (!vpd_pg83) {
3282 rcu_read_unlock();
3283 return -ENXIO;
3284 }

--- 14 unchanged lines hidden (view full) ---

3299
3300 /* The id string must be at least 20 bytes + terminating NULL byte */
3301 if (id_len < 21) {
3302 rcu_read_unlock();
3303 return -EINVAL;
3304 }
3305
3306 memset(id, 0, id_len);
3307 d = vpd_pg83 + 4;
3308 while (d < vpd_pg83 + sdev->vpd_pg83_len) {
3307 d = vpd_pg83->data + 4;
3308 while (d < vpd_pg83->data + vpd_pg83->len) {
3309 /* Skip designators not referring to the LUN */
3310 if ((d[1] & 0x30) != 0x00)
3311 goto next_desig;
3312
3313 switch (d[1] & 0xf) {
3314 case 0x1:
3315 /* T10 Vendor ID */
3316 if (cur_id_size > d[3])

--- 99 unchanged lines hidden (view full) ---

3416 *
3417 * Returns the Target Port Group identifier from the information
3418 * froom VPD page 0x83 of the device.
3419 *
3420 * Returns the identifier or error on failure.
3421 */
3422int scsi_vpd_tpg_id(struct scsi_device *sdev, int *rel_id)
3423{
3309 /* Skip designators not referring to the LUN */
3310 if ((d[1] & 0x30) != 0x00)
3311 goto next_desig;
3312
3313 switch (d[1] & 0xf) {
3314 case 0x1:
3315 /* T10 Vendor ID */
3316 if (cur_id_size > d[3])

--- 99 unchanged lines hidden (view full) ---

3416 *
3417 * Returns the Target Port Group identifier from the information
3418 * froom VPD page 0x83 of the device.
3419 *
3420 * Returns the identifier or error on failure.
3421 */
3422int scsi_vpd_tpg_id(struct scsi_device *sdev, int *rel_id)
3423{
3424 unsigned char *d;
3425 unsigned char __rcu *vpd_pg83;
3424 const unsigned char *d;
3425 const struct scsi_vpd *vpd_pg83;
3426 int group_id = -EAGAIN, rel_port = -1;
3427
3428 rcu_read_lock();
3429 vpd_pg83 = rcu_dereference(sdev->vpd_pg83);
3430 if (!vpd_pg83) {
3431 rcu_read_unlock();
3432 return -ENXIO;
3433 }
3434
3426 int group_id = -EAGAIN, rel_port = -1;
3427
3428 rcu_read_lock();
3429 vpd_pg83 = rcu_dereference(sdev->vpd_pg83);
3430 if (!vpd_pg83) {
3431 rcu_read_unlock();
3432 return -ENXIO;
3433 }
3434
3435 d = sdev->vpd_pg83 + 4;
3436 while (d < sdev->vpd_pg83 + sdev->vpd_pg83_len) {
3435 d = vpd_pg83->data + 4;
3436 while (d < vpd_pg83->data + vpd_pg83->len) {
3437 switch (d[1] & 0xf) {
3438 case 0x4:
3439 /* Relative target port */
3440 rel_port = get_unaligned_be16(&d[6]);
3441 break;
3442 case 0x5:
3443 /* Target port group */
3444 group_id = get_unaligned_be16(&d[6]);

--- 14 unchanged lines hidden --- 		3437 switch (d[1] & 0xf) {
3438 case 0x4:
3439 /* Relative target port */
3440 rel_port = get_unaligned_be16(&d[6]);
3441 break;
3442 case 0x5:
3443 /* Target port group */
3444 group_id = get_unaligned_be16(&d[6]);

--- 14 unchanged lines hidden ---