forked from josch/mmdebstrap
run_null.sh: use file descriptors instead of temporary files to get the exit status of the first part of a pipeline
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736cb493ea
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1 changed files with 18 additions and 8 deletions
26
run_null.sh
26
run_null.sh
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@ -17,14 +17,24 @@ while [ "$#" -gt 0 ]; do
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shift
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shift
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done
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done
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# subshell so that we can cd without effecting the rest
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# - Run command with fds 3 and 4 closed so that whatever test.sh does it
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(
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# cannot interfere with these.
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set +e
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# - Both stdin and stderr of test.sh are written to stdout
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cd ./shared;
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# - Write exit status of test.sh to fd 3
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$SUDO sh -x ./test.sh;
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# - Write stdout to shared/output.txt as well as to fd 4
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echo $?;
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# - Redirect fd 3 to stdout
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) 2>&1 | tee shared/output.txt
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# - Read fd 3 and let the group exit with that value
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if [ "$(cat shared/exitstatus.txt)" -ne 0 ]; then
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# - Redirect fd 4 to stdout
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ret=0
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{ { { {
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ret=0;
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( exec 3>&- 4>&-; env --chdir=./shared $SUDO sh -x ./test.sh 2>&1) || ret=$?;
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echo $ret >&3;
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} | tee shared/output.txt >&4;
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} 3>&1;
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} | { read -r xs; exit "$xs"; }
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} 4>&1 || ret=$?
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if [ "$ret" -ne 0 ]; then
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echo "test.sh failed"
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echo "test.sh failed"
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exit 1
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exit 1
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fi
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fi
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