From: Dan Rue Date: Tue, 27 Nov 2018 03:12:15 +0000 (-0600) Subject: selftests: firmware: remove use of non-standard diff -Z option X-Git-Tag: v5.4-rc1~1922^2~8 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f70b472e937bb659a7b7a14e64f07308e230888c;p=platform%2Fkernel%2Flinux-rpi.git selftests: firmware: remove use of non-standard diff -Z option "diff -Z" is used to trim the trailing whitespace when comparing the loaded firmware file with the source firmware file. However, per the comment in the source code, -Z should not be necessary. In testing, the input and output files are identical. Additionally, -Z is not a standard option and is not available in environments such as busybox. When -Z is not supported, diff fails with a usage error, which is suppressed, but then causes read_firmwares() to exit with a false failure message. Signed-off-by: Dan Rue Acked-by: Kees Cook Signed-off-by: Shuah Khan --- diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh b/tools/testing/selftests/firmware/fw_filesystem.sh index a4320c4..466cf2f 100755 --- a/tools/testing/selftests/firmware/fw_filesystem.sh +++ b/tools/testing/selftests/firmware/fw_filesystem.sh @@ -155,11 +155,8 @@ read_firmwares() { for i in $(seq 0 3); do config_set_read_fw_idx $i - # Verify the contents are what we expect. - # -Z required for now -- check for yourself, md5sum - # on $FW and DIR/read_firmware will yield the same. Even - # cmp agrees, so something is off. - if ! diff -q -Z "$FW" $DIR/read_firmware 2>/dev/null ; then + # Verify the contents match + if ! diff -q "$FW" $DIR/read_firmware 2>/dev/null ; then echo "request #$i: firmware was not loaded" >&2 exit 1 fi @@ -171,7 +168,7 @@ read_firmwares_expect_nofile() for i in $(seq 0 3); do config_set_read_fw_idx $i # Ensures contents differ - if diff -q -Z "$FW" $DIR/read_firmware 2>/dev/null ; then + if diff -q "$FW" $DIR/read_firmware 2>/dev/null ; then echo "request $i: file was not expected to match" >&2 exit 1 fi