78 lines
1.6 KiB
Plaintext
78 lines
1.6 KiB
Plaintext
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#!/bin/sh
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SYSCTL="/proc/sys"
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TARGET="${SYSCTL}/kernel/domainname"
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ORIG=$(cat "${TARGET}")
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TEST_STR="Testing sysctl"
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. ./common_tests
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# Only string sysctls support seeking/appending.
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MAXLEN=65
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echo -n "Writing entire sysctl in short writes ... "
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set_orig
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dd if="${TEST_FILE}" of="${TARGET}" bs=1 2>/dev/null
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if ! verify "${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 middle of sysctl after unsynchronized seek ... "
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set_test
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dd if="${TEST_FILE}" of="${TARGET}" bs=1 seek=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 "Checking sysctl maxlen is at least $MAXLEN ... "
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set_orig
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perl -e 'print "A" x ('"${MAXLEN}"'-2), "B";' | \
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dd of="${TARGET}" bs="${MAXLEN}" 2>/dev/null
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if ! grep -q B "${TARGET}"; then
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echo "FAIL" >&2
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rc=1
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else
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echo "ok"
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fi
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echo -n "Checking sysctl keeps original string on overflow append ... "
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set_orig
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perl -e 'print "A" x ('"${MAXLEN}"'-1), "B";' | \
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dd of="${TARGET}" bs=$(( MAXLEN - 1 )) 2>/dev/null
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if grep -q B "${TARGET}"; then
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echo "FAIL" >&2
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rc=1
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else
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echo "ok"
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fi
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echo -n "Checking sysctl stays NULL terminated on write ... "
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set_orig
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perl -e 'print "A" x ('"${MAXLEN}"'-1), "B";' | \
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dd of="${TARGET}" bs="${MAXLEN}" 2>/dev/null
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if grep -q B "${TARGET}"; then
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echo "FAIL" >&2
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rc=1
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else
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echo "ok"
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fi
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echo -n "Checking sysctl stays NULL terminated on overwrite ... "
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set_orig
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perl -e 'print "A" x ('"${MAXLEN}"'-1), "BB";' | \
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dd of="${TARGET}" bs=$(( $MAXLEN + 1 )) 2>/dev/null
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if grep -q B "${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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exit $rc
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