scsi: qla2xxx: Replace all non-returning strlcpy() with strscpy()

[ Upstream commit 37f1663c91934f664fb850306708094a324c227c ]

strlcpy() reads the entire source buffer first.  This read may exceed the
destination size limit.  This is both inefficient and can lead to linear
read overflows if a source string is not NUL-terminated [1].  In an effort
to remove strlcpy() completely [2], replace strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Link: https://lore.kernel.org/r/20230516025404.2843867-1-azeemshaikh38@gmail.com
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: c3408c4ae041 ("scsi: qla2xxx: Avoid possible run-time warning with long model_num")
Signed-off-by: Sasha Levin <sashal@kernel.org>

2 files changed, 14 insertions, 14 deletions

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 8a0ac87f70a9..11ee2c7487b2 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -4479,7 +4479,7 @@ qla2x00_set_model_info(scsi_qla_host_t *vha, uint8_t *model, size_t len,
 		if (use_tbl &&
 		    ha->pdev->subsystem_vendor == PCI_VENDOR_ID_QLOGIC &&
 		    index < QLA_MODEL_NAMES)
-			strlcpy(ha->model_desc,
+			strscpy(ha->model_desc,
 			    qla2x00_model_name[index * 2 + 1],
 			    sizeof(ha->model_desc));
 	} else {
@@ -4487,14 +4487,14 @@ qla2x00_set_model_info(scsi_qla_host_t *vha, uint8_t *model, size_t len,
 		if (use_tbl &&
 		    ha->pdev->subsystem_vendor == PCI_VENDOR_ID_QLOGIC &&
 		    index < QLA_MODEL_NAMES) {
-			strlcpy(ha->model_number,
+			strscpy(ha->model_number,
 				qla2x00_model_name[index * 2],
 				sizeof(ha->model_number));
-			strlcpy(ha->model_desc,
+			strscpy(ha->model_desc,
 			    qla2x00_model_name[index * 2 + 1],
 			    sizeof(ha->model_desc));
 		} else {
-			strlcpy(ha->model_number, def,
+			strscpy(ha->model_number, def,
 				sizeof(ha->model_number));
 		}
 	}
diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c
index badd09c5dd42..6b44be4ce5bd 100644
--- a/drivers/scsi/qla2xxx/qla_mr.c
+++ b/drivers/scsi/qla2xxx/qla_mr.c
@@ -693,7 +693,7 @@ qlafx00_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len)
 	struct qla_hw_data *ha = vha->hw;
 
 	if (pci_is_pcie(ha->pdev))
-		strlcpy(str, "PCIe iSA", str_len);
+		strscpy(str, "PCIe iSA", str_len);
 	return str;
 }
 
@@ -1854,21 +1854,21 @@ qlafx00_fx_disc(scsi_qla_host_t *vha, fc_port_t *fcport, uint16_t fx_type)
 			phost_info = &preg_hsi->hsi;
 			memset(preg_hsi, 0, sizeof(struct register_host_info));
 			phost_info->os_type = OS_TYPE_LINUX;
-			strlcpy(phost_info->sysname, p_sysid->sysname,
+			strscpy(phost_info->sysname, p_sysid->sysname,
 				sizeof(phost_info->sysname));
-			strlcpy(phost_info->nodename, p_sysid->nodename,
+			strscpy(phost_info->nodename, p_sysid->nodename,
 				sizeof(phost_info->nodename));
 			if (!strcmp(phost_info->nodename, "(none)"))
 				ha->mr.host_info_resend = true;
-			strlcpy(phost_info->release, p_sysid->release,
+			strscpy(phost_info->release, p_sysid->release,
 				sizeof(phost_info->release));
-			strlcpy(phost_info->version, p_sysid->version,
+			strscpy(phost_info->version, p_sysid->version,
 				sizeof(phost_info->version));
-			strlcpy(phost_info->machine, p_sysid->machine,
+			strscpy(phost_info->machine, p_sysid->machine,
 				sizeof(phost_info->machine));
-			strlcpy(phost_info->domainname, p_sysid->domainname,
+			strscpy(phost_info->domainname, p_sysid->domainname,
 				sizeof(phost_info->domainname));
-			strlcpy(phost_info->hostdriver, QLA2XXX_VERSION,
+			strscpy(phost_info->hostdriver, QLA2XXX_VERSION,
 				sizeof(phost_info->hostdriver));
 			preg_hsi->utc = (uint64_t)ktime_get_real_seconds();
 			ql_dbg(ql_dbg_init, vha, 0x0149,
@@ -1914,9 +1914,9 @@ qlafx00_fx_disc(scsi_qla_host_t *vha, fc_port_t *fcport, uint16_t fx_type)
 	if (fx_type == FXDISC_GET_CONFIG_INFO) {
 		struct config_info_data *pinfo =
 		    (struct config_info_data *) fdisc->u.fxiocb.rsp_addr;
-		strlcpy(vha->hw->model_number, pinfo->model_num,
+		strscpy(vha->hw->model_number, pinfo->model_num,
 			ARRAY_SIZE(vha->hw->model_number));
-		strlcpy(vha->hw->model_desc, pinfo->model_description,
+		strscpy(vha->hw->model_desc, pinfo->model_description,
 			ARRAY_SIZE(vha->hw->model_desc));
 		memcpy(&vha->hw->mr.symbolic_name, pinfo->symbolic_name,
 		    sizeof(vha->hw->mr.symbolic_name));