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test: Remove race between commands run in the same context

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context_run() has a race condition if two commands are run in close
proximity (generally involving at least one in the background).  Because we
always use the same name for the temporary fifo files, if another command
is issued while the fifos for the first still exist, mkfifo will fail,
typically causing the entire test script to jam.

Create unique names for the temporary fifos to avoid this problem.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson 2023-04-05 11:56:42 +10:00 committed by Stefano Brivio
parent ca2749e1bd
commit 55bbe3dbcb
1 changed files with 2 additions and 2 deletions
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4
test/lib/context
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@ -89,8 +89,8 @@ context_run() {
__name="$1"
__log="${LOGDIR}/context_${__name}.log"
__enter="${STATESETUP}/context_${__name}.enter"
__stdout="${STATESETUP}/context_${__name}.stdout"
__stderr="${STATESETUP}/context_${__name}.stderr"
__stdout="$(mktemp -u "${STATESETUP}/context_${__name}.stdout.XXXXXXXX")"
__stderr="$(mktemp -u "${STATESETUP}/context_${__name}.stderr.XXXXXXXX")"
shift
echo "$*" >> "${__log}"
mkfifo "${__stdout}" "${__stderr}"