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#!/bin/sh
FTPL="${FAKETIME_TESTLIB:-../src/libfaketime.so.1}"
error=0
./getrandom_test > run0
FAKERANDOM_SEED=0x12345678DEADBEEF LD_PRELOAD="$FTPL" ./getrandom_test > run1
FAKERANDOM_SEED=0x12345678DEADBEEF LD_PRELOAD="$FTPL" ./getrandom_test > run2
FAKERANDOM_SEED=0x0000000000000000 LD_PRELOAD="$FTPL" ./getrandom_test > run3
if diff -u run0 run1 > /dev/null; then
error=1
printf >&2 'test run without a seed produced the same data as a run with a seed!\n'
fi
if ! diff -u run1 run2; then
error=2
printf >&2 'test runs with identical seeds differed!\n'
fi
if diff -u run2 run3 >/dev/null; then
error=3
printf >&2 'test runs with different seeds produced the same data!\n'
fi
rm -f run0 run1 run2 run3
if [ 0 = $error ]; then
printf 'getrandom interception test successful.\n'
fi
exit $error
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