Increase the size of firmware_tag arrays in the following structs from GB_FIRMWARE_U_TAG_MAX_SIZE to GB_FIRMWARE_U_TAG_MAX_SIZE + 1 to accommodate null termination: - fw_mgmt_ioc_intf_load_and_validate - fw_mgmt_ioc_get_backend_version - fw_mgmt_ioc_backend_fw_update - fw_mgmt_ioc_get_intf_version
Replace strncpy() with strscpy() to ensure proper null termination as firmware_tag is interpreted as a null-terminated string and printed with %s.
Signed-off-by: Pranav Tyagi pranav.tyagi03@gmail.com --- .../greybus/Documentation/firmware/firmware.c | 12 ++++++------ drivers/staging/greybus/greybus_firmware.h | 8 ++++---- 2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/greybus/Documentation/firmware/firmware.c b/drivers/staging/greybus/Documentation/firmware/firmware.c index 765d69faa9cc..3b4061f4b34a 100644 --- a/drivers/staging/greybus/Documentation/firmware/firmware.c +++ b/drivers/staging/greybus/Documentation/firmware/firmware.c @@ -63,8 +63,8 @@ static int update_intf_firmware(int fd) intf_load.major = 0; intf_load.minor = 0;
- strncpy((char *)&intf_load.firmware_tag, firmware_tag, - GB_FIRMWARE_U_TAG_MAX_SIZE); + strscpy((char *)&intf_load.firmware_tag, firmware_tag, + GB_FIRMWARE_U_TAG_MAX_SIZE + 1);
ret = ioctl(fd, FW_MGMT_IOC_INTF_LOAD_AND_VALIDATE, &intf_load); if (ret < 0) { @@ -101,8 +101,8 @@ 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, - GB_FIRMWARE_U_TAG_MAX_SIZE); + strscpy((char *)&backend_fw_info.firmware_tag, firmware_tag, + GB_FIRMWARE_U_TAG_MAX_SIZE + 1);
retry_fw_version: ret = ioctl(fd, FW_MGMT_IOC_GET_BACKEND_FW, &backend_fw_info); @@ -129,8 +129,8 @@ 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, - GB_FIRMWARE_U_TAG_MAX_SIZE); + strscpy((char *)&backend_update.firmware_tag, firmware_tag, + GB_FIRMWARE_U_TAG_MAX_SIZE + 1);
retry_fw_update: backend_update.status = 0; diff --git a/drivers/staging/greybus/greybus_firmware.h b/drivers/staging/greybus/greybus_firmware.h index b6042a82ada4..ad5b2c8a6461 100644 --- a/drivers/staging/greybus/greybus_firmware.h +++ b/drivers/staging/greybus/greybus_firmware.h @@ -38,20 +38,20 @@
/* IOCTL support */ struct fw_mgmt_ioc_get_intf_version { - __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE]; + __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE + 1]; __u16 major; __u16 minor; } __packed;
struct fw_mgmt_ioc_get_backend_version { - __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE]; + __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE + 1]; __u16 major; __u16 minor; __u8 status; } __packed;
struct fw_mgmt_ioc_intf_load_and_validate { - __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE]; + __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE + 1]; __u8 load_method; __u8 status; __u16 major; @@ -59,7 +59,7 @@ struct fw_mgmt_ioc_intf_load_and_validate { } __packed;
struct fw_mgmt_ioc_backend_fw_update { - __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE]; + __u8 firmware_tag[GB_FIRMWARE_U_TAG_MAX_SIZE + 1]; __u8 status; } __packed;