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-rw-r--r--drivers/target/target_core_fabric_lib.c63
-rw-r--r--drivers/target/target_core_iblock.c33
-rw-r--r--drivers/target/target_core_iblock.h1
-rw-r--r--drivers/target/target_core_internal.h4
-rw-r--r--drivers/target/target_core_pr.c18
5 files changed, 89 insertions, 30 deletions
diff --git a/drivers/target/target_core_fabric_lib.c b/drivers/target/target_core_fabric_lib.c
index 43f47e3aa448..ec7bc6e30228 100644
--- a/drivers/target/target_core_fabric_lib.c
+++ b/drivers/target/target_core_fabric_lib.c
@@ -257,11 +257,41 @@ static int iscsi_get_pr_transport_id_len(
return len;
}
-static char *iscsi_parse_pr_out_transport_id(
+static void sas_parse_pr_out_transport_id(char *buf, char *i_str)
+{
+ char hex[17] = {};
+
+ bin2hex(hex, buf + 4, 8);
+ snprintf(i_str, TRANSPORT_IQN_LEN, "naa.%s", hex);
+}
+
+static void srp_parse_pr_out_transport_id(char *buf, char *i_str)
+{
+ char hex[33] = {};
+
+ bin2hex(hex, buf + 8, 16);
+ snprintf(i_str, TRANSPORT_IQN_LEN, "0x%s", hex);
+}
+
+static void fcp_parse_pr_out_transport_id(char *buf, char *i_str)
+{
+ snprintf(i_str, TRANSPORT_IQN_LEN, "%8phC", buf + 8);
+}
+
+static void sbp_parse_pr_out_transport_id(char *buf, char *i_str)
+{
+ char hex[17] = {};
+
+ bin2hex(hex, buf + 8, 8);
+ snprintf(i_str, TRANSPORT_IQN_LEN, "%s", hex);
+}
+
+static bool iscsi_parse_pr_out_transport_id(
struct se_portal_group *se_tpg,
char *buf,
u32 *out_tid_len,
- char **port_nexus_ptr)
+ char **port_nexus_ptr,
+ char *i_str)
{
char *p;
int i;
@@ -282,7 +312,7 @@ static char *iscsi_parse_pr_out_transport_id(
if ((format_code != 0x00) && (format_code != 0x40)) {
pr_err("Illegal format code: 0x%02x for iSCSI"
" Initiator Transport ID\n", format_code);
- return NULL;
+ return false;
}
/*
* If the caller wants the TransportID Length, we set that value for the
@@ -306,7 +336,7 @@ static char *iscsi_parse_pr_out_transport_id(
pr_err("Unable to locate \",i,0x\" separator"
" for Initiator port identifier: %s\n",
&buf[4]);
- return NULL;
+ return false;
}
*p = '\0'; /* Terminate iSCSI Name */
p += 5; /* Skip over ",i,0x" separator */
@@ -339,7 +369,8 @@ static char *iscsi_parse_pr_out_transport_id(
} else
*port_nexus_ptr = NULL;
- return &buf[4];
+ strscpy(i_str, &buf[4], TRANSPORT_IQN_LEN);
+ return true;
}
int target_get_pr_transport_id_len(struct se_node_acl *nacl,
@@ -387,33 +418,35 @@ int target_get_pr_transport_id(struct se_node_acl *nacl,
}
}
-const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg,
- char *buf, u32 *out_tid_len, char **port_nexus_ptr)
+bool target_parse_pr_out_transport_id(struct se_portal_group *tpg,
+ char *buf, u32 *out_tid_len, char **port_nexus_ptr, char *i_str)
{
- u32 offset;
-
switch (tpg->proto_id) {
case SCSI_PROTOCOL_SAS:
/*
* Assume the FORMAT CODE 00b from spc4r17, 7.5.4.7 TransportID
* for initiator ports using SCSI over SAS Serial SCSI Protocol.
*/
- offset = 4;
+ sas_parse_pr_out_transport_id(buf, i_str);
break;
- case SCSI_PROTOCOL_SBP:
case SCSI_PROTOCOL_SRP:
+ srp_parse_pr_out_transport_id(buf, i_str);
+ break;
case SCSI_PROTOCOL_FCP:
- offset = 8;
+ fcp_parse_pr_out_transport_id(buf, i_str);
+ break;
+ case SCSI_PROTOCOL_SBP:
+ sbp_parse_pr_out_transport_id(buf, i_str);
break;
case SCSI_PROTOCOL_ISCSI:
return iscsi_parse_pr_out_transport_id(tpg, buf, out_tid_len,
- port_nexus_ptr);
+ port_nexus_ptr, i_str);
default:
pr_err("Unknown proto_id: 0x%02x\n", tpg->proto_id);
- return NULL;
+ return false;
}
*port_nexus_ptr = NULL;
*out_tid_len = 24;
- return buf + offset;
+ return true;
}
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 73564efd11d2..66c292b7d74b 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -64,6 +64,7 @@ static struct se_device *iblock_alloc_device(struct se_hba *hba, const char *nam
pr_err("Unable to allocate struct iblock_dev\n");
return NULL;
}
+ ib_dev->ibd_exclusive = true;
ib_dev->ibd_plug = kcalloc(nr_cpu_ids, sizeof(*ib_dev->ibd_plug),
GFP_KERNEL);
@@ -95,6 +96,7 @@ static int iblock_configure_device(struct se_device *dev)
struct block_device *bd;
struct blk_integrity *bi;
blk_mode_t mode = BLK_OPEN_READ;
+ void *holder = ib_dev;
unsigned int max_write_zeroes_sectors;
int ret;
@@ -109,15 +111,18 @@ static int iblock_configure_device(struct se_device *dev)
goto out;
}
- pr_debug( "IBLOCK: Claiming struct block_device: %s\n",
- ib_dev->ibd_udev_path);
+ pr_debug("IBLOCK: Claiming struct block_device: %s: %d\n",
+ ib_dev->ibd_udev_path, ib_dev->ibd_exclusive);
if (!ib_dev->ibd_readonly)
mode |= BLK_OPEN_WRITE;
else
dev->dev_flags |= DF_READ_ONLY;
- bdev_file = bdev_file_open_by_path(ib_dev->ibd_udev_path, mode, ib_dev,
+ if (!ib_dev->ibd_exclusive)
+ holder = NULL;
+
+ bdev_file = bdev_file_open_by_path(ib_dev->ibd_udev_path, mode, holder,
NULL);
if (IS_ERR(bdev_file)) {
ret = PTR_ERR(bdev_file);
@@ -560,13 +565,14 @@ fail:
}
enum {
- Opt_udev_path, Opt_readonly, Opt_force, Opt_err
+ Opt_udev_path, Opt_readonly, Opt_force, Opt_exclusive, Opt_err,
};
static match_table_t tokens = {
{Opt_udev_path, "udev_path=%s"},
{Opt_readonly, "readonly=%d"},
{Opt_force, "force=%d"},
+ {Opt_exclusive, "exclusive=%d"},
{Opt_err, NULL}
};
@@ -576,7 +582,7 @@ static ssize_t iblock_set_configfs_dev_params(struct se_device *dev,
struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
char *orig, *ptr, *arg_p, *opts;
substring_t args[MAX_OPT_ARGS];
- int ret = 0, token;
+ int ret = 0, token, tmp_exclusive;
unsigned long tmp_readonly;
opts = kstrdup(page, GFP_KERNEL);
@@ -623,6 +629,22 @@ static ssize_t iblock_set_configfs_dev_params(struct se_device *dev,
ib_dev->ibd_readonly = tmp_readonly;
pr_debug("IBLOCK: readonly: %d\n", ib_dev->ibd_readonly);
break;
+ case Opt_exclusive:
+ arg_p = match_strdup(&args[0]);
+ if (!arg_p) {
+ ret = -ENOMEM;
+ break;
+ }
+ ret = kstrtoint(arg_p, 0, &tmp_exclusive);
+ kfree(arg_p);
+ if (ret < 0) {
+ pr_err("kstrtoul() failed for exclusive=\n");
+ goto out;
+ }
+ ib_dev->ibd_exclusive = tmp_exclusive;
+ pr_debug("IBLOCK: exclusive: %d\n",
+ ib_dev->ibd_exclusive);
+ break;
case Opt_force:
break;
default:
@@ -647,6 +669,7 @@ static ssize_t iblock_show_configfs_dev_params(struct se_device *dev, char *b)
bl += sprintf(b + bl, " UDEV PATH: %s",
ib_dev->ibd_udev_path);
bl += sprintf(b + bl, " readonly: %d\n", ib_dev->ibd_readonly);
+ bl += sprintf(b + bl, " exclusive: %d\n", ib_dev->ibd_exclusive);
bl += sprintf(b + bl, " ");
if (bd) {
diff --git a/drivers/target/target_core_iblock.h b/drivers/target/target_core_iblock.h
index 91f6f4280666..e2f28a69a11c 100644
--- a/drivers/target/target_core_iblock.h
+++ b/drivers/target/target_core_iblock.h
@@ -34,6 +34,7 @@ struct iblock_dev {
struct block_device *ibd_bd;
struct file *ibd_bdev_file;
bool ibd_readonly;
+ bool ibd_exclusive;
struct iblock_dev_plug *ibd_plug;
} ____cacheline_aligned;
diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h
index 408be26d2e9b..20aab1f50565 100644
--- a/drivers/target/target_core_internal.h
+++ b/drivers/target/target_core_internal.h
@@ -103,8 +103,8 @@ int target_get_pr_transport_id_len(struct se_node_acl *nacl,
int target_get_pr_transport_id(struct se_node_acl *nacl,
struct t10_pr_registration *pr_reg, int *format_code,
unsigned char *buf);
-const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg,
- char *buf, u32 *out_tid_len, char **port_nexus_ptr);
+bool target_parse_pr_out_transport_id(struct se_portal_group *tpg,
+ char *buf, u32 *out_tid_len, char **port_nexus_ptr, char *i_str);
/* target_core_hba.c */
struct se_hba *core_alloc_hba(const char *, u32, u32);
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index 70905805cb17..83e172c92238 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -1478,11 +1478,12 @@ core_scsi3_decode_spec_i_port(
LIST_HEAD(tid_dest_list);
struct pr_transport_id_holder *tidh_new, *tidh, *tidh_tmp;
unsigned char *buf, *ptr, proto_ident;
- const unsigned char *i_str = NULL;
+ unsigned char i_str[TRANSPORT_IQN_LEN];
char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN];
sense_reason_t ret;
u32 tpdl, tid_len = 0;
u32 dest_rtpi = 0;
+ bool tid_found;
/*
* Allocate a struct pr_transport_id_holder and setup the
@@ -1571,9 +1572,9 @@ core_scsi3_decode_spec_i_port(
dest_rtpi = tmp_lun->lun_tpg->tpg_rtpi;
iport_ptr = NULL;
- i_str = target_parse_pr_out_transport_id(tmp_tpg,
- ptr, &tid_len, &iport_ptr);
- if (!i_str)
+ tid_found = target_parse_pr_out_transport_id(tmp_tpg,
+ ptr, &tid_len, &iport_ptr, i_str);
+ if (!tid_found)
continue;
/*
* Determine if this SCSI device server requires that
@@ -3153,13 +3154,14 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
unsigned char *buf;
- const unsigned char *initiator_str;
+ unsigned char initiator_str[TRANSPORT_IQN_LEN];
char *iport_ptr = NULL, i_buf[PR_REG_ISID_ID_LEN] = { };
u32 tid_len, tmp_tid_len;
int new_reg = 0, type, scope, matching_iname;
sense_reason_t ret;
unsigned short rtpi;
unsigned char proto_ident;
+ bool tid_found;
if (!se_sess || !se_lun) {
pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
@@ -3278,9 +3280,9 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key,
ret = TCM_INVALID_PARAMETER_LIST;
goto out;
}
- initiator_str = target_parse_pr_out_transport_id(dest_se_tpg,
- &buf[24], &tmp_tid_len, &iport_ptr);
- if (!initiator_str) {
+ tid_found = target_parse_pr_out_transport_id(dest_se_tpg,
+ &buf[24], &tmp_tid_len, &iport_ptr, initiator_str);
+ if (!tid_found) {
pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate"
" initiator_str from Transport ID\n");
ret = TCM_INVALID_PARAMETER_LIST;
generated by cgit (git 2.34.1) at 2025-08-07 00:29:33 +0000