From 816407e8c60a5aa4dfdc152d2b7010d7aad40725 Mon Sep 17 00:00:00 2001 From: Maurizio Lombardi Date: Tue, 17 Jun 2025 12:52:42 +0200 Subject: [PATCH] target: generate correct string identifiers for PR OUT transport IDs Fix target_parse_pr_out_transport_id() to return a dynamically allocated string representing the transport ID in a human-readable format (e.g., naa.xxxxxxxx...) for various SCSI protocol types (SAS, FCP, SRP, SBP). Previously, the function returned a pointer to the raw binary buffer. The caller would then compared it to a human-readable string, which obviously always failed. Now, the function constructs a string using kasprintf() based on the protocol's offset and format: * SAS, FCP, SBP: 64-bit identifier * SRP: 128-bit identifier * iSCSI: duplicates the string to match the new allocation behavior Signed-off-by: Maurizio Lombardi --- drivers/target/target_core_fabric_lib.c | 63 +++++++++++++++++++------ drivers/target/target_core_internal.h | 4 +- drivers/target/target_core_pr.c | 18 +++---- 3 files changed, 60 insertions(+), 25 deletions(-) diff --git a/drivers/target/target_core_fabric_lib.c b/drivers/target/target_core_fabric_lib.c index 43f47e3aa448..cc40f857e21a 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] = {0}; + + 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] = {0}; + + 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] = {0}; + + 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]; + strncpy(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_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..8cd4946b42eb 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; + const 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 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; -- 2.47.1