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selftests: firmware: skip timeout checks for kernels without user mode helper 

The CONFIG_FW_LOADER_USER_HELPER is mostly disabled these days, so skip
timeout setting for these kernels.

Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Luis R. Rodriguez 2015-07-24 15:10:22 -07:00 committed by Greg Kroah-Hartman
parent 71cf5aeeb8
commit 1d0fbb3467
2 changed files with 31 additions and 6 deletions
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25
tools/testing/selftests/firmware/fw_filesystem.sh
View File

@ -9,7 +9,15 @@ modprobe test_firmware
DIR=/sys/devices/virtual/misc/test_firmware
OLD_TIMEOUT=$(cat /sys/class/firmware/timeout)
# CONFIG_FW_LOADER_USER_HELPER has a sysfs class under /sys/class/firmware/
# These days no one enables CONFIG_FW_LOADER_USER_HELPER so check for that
# as an indicator for CONFIG_FW_LOADER_USER_HELPER.
HAS_FW_LOADER_USER_HELPER=$(if [ -d /sys/class/firmware/ ]; then echo yes; else echo no; fi)
if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
OLD_TIMEOUT=$(cat /sys/class/firmware/timeout)
fi
OLD_FWPATH=$(cat /sys/module/firmware_class/parameters/path)
FWPATH=$(mktemp -d)
@ -17,7 +25,9 @@ FW="$FWPATH/test-firmware.bin"
test_finish()
{
echo "$OLD_TIMEOUT" >/sys/class/firmware/timeout
if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
echo "$OLD_TIMEOUT" >/sys/class/firmware/timeout
fi
echo -n "$OLD_PATH" >/sys/module/firmware_class/parameters/path
rm -f "$FW"
rmdir "$FWPATH"
@ -25,8 +35,11 @@ test_finish()
trap "test_finish" EXIT
# Turn down the timeout so failures don't take so long.
echo 1 >/sys/class/firmware/timeout
if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
# Turn down the timeout so failures don't take so long.
echo 1 >/sys/class/firmware/timeout
fi
# Set the kernel search path.
echo -n "$FWPATH" >/sys/module/firmware_class/parameters/path
@ -41,7 +54,9 @@ if diff -q "$FW" /dev/test_firmware >/dev/null ; then
echo "$0: firmware was not expected to match" >&2
exit 1
else
echo "$0: timeout works"
if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
echo "$0: timeout works"
fi
fi
# This should succeed via kernel load or will fail after 1 second after

12
tools/testing/selftests/firmware/fw_userhelper.sh
View File

@ -9,7 +9,17 @@ modprobe test_firmware
DIR=/sys/devices/virtual/misc/test_firmware
OLD_TIMEOUT=$(cat /sys/class/firmware/timeout)
# CONFIG_FW_LOADER_USER_HELPER has a sysfs class under /sys/class/firmware/
# These days no one enables CONFIG_FW_LOADER_USER_HELPER so check for that
# as an indicator for CONFIG_FW_LOADER_USER_HELPER.
HAS_FW_LOADER_USER_HELPER=$(if [ -d /sys/class/firmware/ ]; then echo yes; else echo no; fi)
if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then
OLD_TIMEOUT=$(cat /sys/class/firmware/timeout)
else
echo "usermode helper disabled so ignoring test"
exit 0
fi
FWPATH=$(mktemp -d)
FW="$FWPATH/test-firmware.bin"