diff mbox series

[2/7] scsi: mpt3sas: replace deprecated strncpy with strscpy

Message ID 20240223-strncpy-drivers-scsi-mpi3mr-mpi3mr_fw-c-v1-2-9cd3882f0700@google.com
State Superseded
Headers show
Series scsi: replace deprecated strncpy | expand

Commit Message

Justin Stitt Feb. 23, 2024, 10:23 p.m. UTC 
The replacement in mpt3sas_base.c is a trivial one because desc is
already zero-initialized meaning there is no functional change here.

For mpt3sas_transport.c, we know edev is zero-initialized as well while
manufacture_reply comes from dma_alloc_coherent(). No functional change
here either.

For all cases, use the more idiomatic strscpy() usage of:
strscpy(dest, src, sizeof(dest))

Signed-off-by: Justin Stitt <justinstitt@google.com>
---
 drivers/scsi/mpt3sas/mpt3sas_base.c      |  2 +-
 drivers/scsi/mpt3sas/mpt3sas_transport.c | 18 +++++++++---------
 2 files changed, 10 insertions(+), 10 deletions(-)

Comments

Kees Cook Feb. 24, 2024, 12:05 a.m. UTC | #1 
On Fri, Feb 23, 2024 at 10:23:07PM +0000, Justin Stitt wrote:
> The replacement in mpt3sas_base.c is a trivial one because desc is
> already zero-initialized meaning there is no functional change here.
> 
> For mpt3sas_transport.c, we know edev is zero-initialized as well while
> manufacture_reply comes from dma_alloc_coherent(). No functional change
> here either.
> 
> For all cases, use the more idiomatic strscpy() usage of:
> strscpy(dest, src, sizeof(dest))
> 
> Signed-off-by: Justin Stitt <justinstitt@google.com>

Reviewed-by: Kees Cook <keescook@chromium.org>
diff mbox series

Patch

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 8761bc58d965..c1e421cb8533 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -4774,7 +4774,7 @@  _base_display_ioc_capabilities(struct MPT3SAS_ADAPTER *ioc)
 	char desc[17] = {0};
 	u32 iounit_pg1_flags;
 
-	strncpy(desc, ioc->manu_pg0.ChipName, 16);
+	strscpy(desc, ioc->manu_pg0.ChipName, sizeof(desc));
 	ioc_info(ioc, "%s: FWVersion(%02d.%02d.%02d.%02d), ChipRevision(0x%02x)\n",
 		 desc,
 		 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 421ea511b664..76f9a9177198 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -458,17 +458,17 @@  _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc,
 			goto out;
 
 		manufacture_reply = data_out + sizeof(struct rep_manu_request);
-		strncpy(edev->vendor_id, manufacture_reply->vendor_id,
-		     SAS_EXPANDER_VENDOR_ID_LEN);
-		strncpy(edev->product_id, manufacture_reply->product_id,
-		     SAS_EXPANDER_PRODUCT_ID_LEN);
-		strncpy(edev->product_rev, manufacture_reply->product_rev,
-		     SAS_EXPANDER_PRODUCT_REV_LEN);
+		strscpy(edev->vendor_id, manufacture_reply->vendor_id,
+			sizeof(edev->vendor_id));
+		strscpy(edev->product_id, manufacture_reply->product_id,
+			sizeof(edev->product_id));
+		strscpy(edev->product_rev, manufacture_reply->product_rev,
+			sizeof(edev->product_rev));
 		edev->level = manufacture_reply->sas_format & 1;
 		if (edev->level) {
-			strncpy(edev->component_vendor_id,
-			    manufacture_reply->component_vendor_id,
-			     SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
+			strscpy(edev->component_vendor_id,
+				manufacture_reply->component_vendor_id,
+				sizeof(edev->component_vendor_id));
 			tmp = (u8 *)&manufacture_reply->component_id;
 			edev->component_id = tmp[0] << 8 | tmp[1];
 			edev->component_revision_id =