[PATCH blktests v3 05/13] check: Introduce fallback_device() and cleanup_fallback_device()

Shin'ichiro Kawasaki
2019-01-18T09:45:20Z

These optional functions can be defined by a test case script. When
defined and TEST_DEVS is empty, the fallback_device() is executed before
runing the test case. The fallback_device() function intializes a virtual
device to run the test case and return the device to be set in TEST_DEVS.
After running the test case, cleanup_fallback_device() is executed to
clean up the device.

This feature allows to run test cases with test_device() function even if
TEST_DEVS is not set in the config, using virtaul devices such as null_blk.

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
---
check | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)

diff --git a/check b/check
index 4563d62..4b66995 100755
--- a/check
+++ b/check
@@ -407,6 +407,7 @@ _run_test() {
CHECK_DMESG=1
DMESG_FILTER="cat"
RUN_FOR_ZONED=0
+ FALLBACK_DEVICE=0

# shellcheck disable=SC1090
. "tests/${TEST_NAME}"
@@ -425,6 +426,23 @@ _run_test() {
_call_test test
fi
else
+ if [[ ${#TEST_DEVS[@]} -eq 0 ]] && \
+ declare -fF fallback_device >/dev/null && \
+ declare -fF cleanup_fallback_device >/dev/null; then
+ if ! test_dev=$(fallback_device); then
+ _warning "$TEST_NAME: fallback_device call failure"
+ return 0
+ fi
+ if ! sysfs_dir="$(_find_sysfs_dir "$test_dev")"; then
+ _warning "$TEST_NAME: could not find sysfs directory for ${test_dev}"
+ cleanup_fallback_device
+ return 0
+ fi
+ TEST_DEVS=( "${test_dev}" )
+ TEST_DEV_SYSFS_DIRS["$test_dev"]="$sysfs_dir"
+ FALLBACK_DEVICE=1
+ fi
+
if [[ ${#TEST_DEVS[@]} -eq 0 ]]; then
return 0
fi
@@ -451,6 +469,13 @@ _run_test() {
ret=1
fi
done
+
+ if (( FALLBACK_DEVICE )); then
+ cleanup_fallback_device
+ unset TEST_DEV_SYSFS_DIRS["${TEST_DEVS[0]}"]
+ TEST_DEVS=()
+ fi
+
return $ret
fi
}
--
2.20.1