diff options
Diffstat (limited to 'tests/08_test_patch_data/usbip-fix-misuse-of-strncpy.patch')
| -rw-r--r-- | tests/08_test_patch_data/usbip-fix-misuse-of-strncpy.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/tests/08_test_patch_data/usbip-fix-misuse-of-strncpy.patch b/tests/08_test_patch_data/usbip-fix-misuse-of-strncpy.patch new file mode 100644 index 00000000..9f0d3f81 --- /dev/null +++ b/tests/08_test_patch_data/usbip-fix-misuse-of-strncpy.patch @@ -0,0 +1,56 @@ +From: Ben Hutchings <ben@decadent.org.uk> +Date: Fri, 20 Jul 2018 01:30:24 +0100 +Subject: usbip: Fix misuse of strncpy() +Bug-Debian: https://bugs.debian.org/897802 + +gcc 8 reports: + +usbip_device_driver.c: In function ‘read_usb_vudc_device’: +usbip_device_driver.c:106:2: error: ‘strncpy’ specified bound 256 equals destination size [-Werror=stringop-truncation] + strncpy(dev->path, path, SYSFS_PATH_MAX); + ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +usbip_device_driver.c:125:2: error: ‘strncpy’ specified bound 32 equals destination size [-Werror=stringop-truncation] + strncpy(dev->busid, name, SYSFS_BUS_ID_SIZE); + ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +I'm not convinced it makes sense to truncate the copied strings here, +but since we're already doing so let's ensure they're still null- +terminated. We can't easily use strlcpy() here, so use snprintf(). + +usbip_common.c has the same problem. + +Signed-off-by: Ben Hutchings <ben@decadent.org.uk> +--- +--- a/tools/usb/usbip/libsrc/usbip_common.c ++++ b/tools/usb/usbip/libsrc/usbip_common.c +@@ -226,8 +226,8 @@ int read_usb_device(struct udev_device * + path = udev_device_get_syspath(sdev); + name = udev_device_get_sysname(sdev); + +- strncpy(udev->path, path, SYSFS_PATH_MAX); +- strncpy(udev->busid, name, SYSFS_BUS_ID_SIZE); ++ snprintf(udev->path, SYSFS_PATH_MAX, "%s", path); ++ snprintf(udev->busid, SYSFS_BUS_ID_SIZE, "%s", name); + + sscanf(name, "%u-%u", &busnum, &devnum); + udev->busnum = busnum; +--- a/tools/usb/usbip/libsrc/usbip_device_driver.c ++++ b/tools/usb/usbip/libsrc/usbip_device_driver.c +@@ -103,7 +103,7 @@ int read_usb_vudc_device(struct udev_dev + copy_descr_attr16(dev, &descr, idProduct); + copy_descr_attr16(dev, &descr, bcdDevice); + +- strncpy(dev->path, path, SYSFS_PATH_MAX); ++ snprintf(dev->path, SYSFS_PATH_MAX, "%s", path); + + dev->speed = USB_SPEED_UNKNOWN; + speed = udev_device_get_sysattr_value(sdev, "current_speed"); +@@ -122,7 +122,7 @@ int read_usb_vudc_device(struct udev_dev + dev->busnum = 0; + + name = udev_device_get_sysname(plat); +- strncpy(dev->busid, name, SYSFS_BUS_ID_SIZE); ++ snprintf(dev->busid, SYSFS_BUS_ID_SIZE, "%s", name); + return 0; + err: + fclose(fd); |