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* [PATCH RESEND] staging : greybus : Documentation : firmware : Replace deprecated strncpy() with strscpy()
@ 2025-05-21  4:56 rujra
  2025-05-21  5:30 ` Greg KH
  0 siblings, 1 reply; 7+ messages in thread
From: rujra @ 2025-05-21  4:56 UTC (permalink / raw)
  To: Johan Hovold, elder, Greg KH; +Cc: greybus-dev, linux-staging, linux-kernel

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@gmail.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

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2025-05-21  9:19 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
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     [not found] <aC2ILNV6xgt11KuN@brak3r-Ubuntu>
     [not found] ` <2025052142-maturing-earthworm-cb31@gregkh>
2025-05-21  8:38   ` [PATCH RESEND] staging : greybus : Documentation : firmware : Replace deprecated strncpy() with strscpy() Rujra Bhatt
2025-05-21  8:42     ` Rujra Bhatt
2025-05-21  9:19     ` Greg KH
2025-05-21  4:56 rujra
2025-05-21  5:30 ` Greg KH
2025-05-21  5:41   ` rujra
2025-05-21  7:06     ` Greg KH

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