mirror of https://gitee.com/openkylin/linux.git
110 lines
1.8 KiB
Bash
110 lines
1.8 KiB
Bash
#!/bin/sh
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TEST_FILE=$(mktemp)
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echo "== Testing sysctl behavior against ${TARGET} =="
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set_orig()
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{
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echo "${ORIG}" > "${TARGET}"
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}
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set_test()
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{
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echo "${TEST_STR}" > "${TARGET}"
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}
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verify()
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{
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local seen
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seen=$(cat "$1")
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if [ "${seen}" != "${TEST_STR}" ]; then
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return 1
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fi
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return 0
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}
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trap 'set_orig; rm -f "${TEST_FILE}"' EXIT
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rc=0
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echo -n "Writing test file ... "
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echo "${TEST_STR}" > "${TEST_FILE}"
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if ! verify "${TEST_FILE}"; then
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echo "FAIL" >&2
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exit 1
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else
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echo "ok"
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fi
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echo -n "Checking sysctl is not set to test value ... "
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if verify "${TARGET}"; then
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echo "FAIL" >&2
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exit 1
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else
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echo "ok"
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fi
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echo -n "Writing sysctl from shell ... "
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set_test
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if ! verify "${TARGET}"; then
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echo "FAIL" >&2
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exit 1
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else
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echo "ok"
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fi
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echo -n "Resetting sysctl to original value ... "
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set_orig
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if verify "${TARGET}"; then
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echo "FAIL" >&2
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exit 1
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else
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echo "ok"
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fi
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# Now that we've validated the sanity of "set_test" and "set_orig",
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# we can use those functions to set starting states before running
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# specific behavioral tests.
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echo -n "Writing entire sysctl in single write ... "
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set_orig
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dd if="${TEST_FILE}" of="${TARGET}" bs=4096 2>/dev/null
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if ! verify "${TARGET}"; then
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echo "FAIL" >&2
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rc=1
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else
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echo "ok"
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fi
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echo -n "Writing middle of sysctl after synchronized seek ... "
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set_test
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dd if="${TEST_FILE}" of="${TARGET}" bs=1 seek=1 skip=1 2>/dev/null
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if ! verify "${TARGET}"; then
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echo "FAIL" >&2
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rc=1
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else
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echo "ok"
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fi
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echo -n "Writing beyond end of sysctl ... "
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set_orig
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dd if="${TEST_FILE}" of="${TARGET}" bs=20 seek=2 2>/dev/null
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if verify "${TARGET}"; then
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echo "FAIL" >&2
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rc=1
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else
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echo "ok"
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fi
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echo -n "Writing sysctl with multiple long writes ... "
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set_orig
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(perl -e 'print "A" x 50;'; echo "${TEST_STR}") | \
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dd of="${TARGET}" bs=50 2>/dev/null
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if verify "${TARGET}"; then
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echo "FAIL" >&2
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rc=1
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else
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echo "ok"
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fi
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