linux-kernel - [PATCH V1] staging : greybus : Documentation : firmware : Replace deprecated strncpy() with strscpy()

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Message-ID: <aC2dO1QKTVMOJQ8K@brak3r-Ubuntu>
Date: Wed, 21 May 2025 15:00:35 +0530
From: Rujra Bhatt <braker.noob.kernel@...il.com>
To: johan@...nel.org, elder@...nel.org, gregkh@...uxfoundation.org
Cc: greybus-dev@...ts.linaro.org, linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH V1] staging : greybus : Documentation : firmware : Replace
 deprecated strncpy() with strscpy()

----------------------------------------------------------
This is the new Patch for the earlier Patch hence made V1. 

[Note: there will be no significant changes.]
----------------------------------------------------------

Changes: 

To ensuring that the firmware tag is properly null-terminated. When copying firmware tag strings to prevent buffer overflows and ensure data integrity.


Changes has been made in 3 positions:
1: update firmware tag
2: backend update firmware tag
3: backend update firmware tag with unipro

Signed-off-by: Rujra Bhatt <braker.noob.kernel@...il.com>
---
 drivers/staging/greybus/Documentation/firmware/firmware.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/greybus/Documentation/firmware/firmware.c b/drivers/staging/greybus/Documentation/firmware/firmware.c
index 765d69faa..f37904b91 100644
--- a/drivers/staging/greybus/Documentation/firmware/firmware.c
+++ b/drivers/staging/greybus/Documentation/firmware/firmware.c
@@ -63,7 +63,7 @@ static int update_intf_firmware(int fd)
 	intf_load.major = 0;
 	intf_load.minor = 0;
 
-	strncpy((char *)&intf_load.firmware_tag, firmware_tag,
+	strscpy((char *)&intf_load.firmware_tag, firmware_tag,
 		GB_FIRMWARE_U_TAG_MAX_SIZE);
 
 	ret = ioctl(fd, FW_MGMT_IOC_INTF_LOAD_AND_VALIDATE, &intf_load);
@@ -101,7 +101,7 @@ static int update_backend_firmware(int fd)
 	/* Get Backend Firmware Version */
 	printf("Getting Backend Firmware Version\n");
 
-	strncpy((char *)&backend_fw_info.firmware_tag, firmware_tag,
+	strscpy((char *)&backend_fw_info.firmware_tag, firmware_tag,
 		GB_FIRMWARE_U_TAG_MAX_SIZE);
 
 retry_fw_version:
@@ -129,7 +129,7 @@ static int update_backend_firmware(int fd)
 	/* Try Backend Firmware Update over Unipro */
 	printf("Updating Backend Firmware\n");
 
-	strncpy((char *)&backend_update.firmware_tag, firmware_tag,
+	strscpy((char *)&backend_update.firmware_tag, firmware_tag,
 		GB_FIRMWARE_U_TAG_MAX_SIZE);
 
 retry_fw_update:
-- 
2.43.0