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

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Message-ID: <CAG+54DZYz-4hW33Py9mihHDauWw55=_rP71s1MbCg-5gxw7J7Q@mail.gmail.com>
Date: Wed, 21 May 2025 10:26:52 +0530
From: rujra <braker.noob.kernel@...il.com>
To: Johan Hovold <johan@...nel.org>, elder@...nel.org, 
	Greg KH <gregkh@...uxfoundation.org>
Cc: greybus-dev@...ts.linaro.org, linux-staging@...ts.linux.dev, 
	linux-kernel@...r.kernel.org
Subject: [PATCH RESEND] staging : greybus : Documentation : firmware : Replace
 deprecated strncpy() with strscpy()

To ensure 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