mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-23 05:56:14 -04:00
fa61e9aec9
The current syntax of X=${X:=X} first evaluates the ${X:=Y} expression,
which either uses the existing value of $X if there is one, or uses the
value of "Y" as a fallback, and assigns it to X. The expression is then
replaced with the now-current value of $X. Assigning that value to X once
more is meaningless.
So avoid the outer X=... bit, and instead express the same idea though the
do-nothing ":" built-in as : "${X:=Y}". This also cleans up the block
nicely and makes it more readable.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
Link: https://lore.kernel.org/r/1890ddc58420c2c0d5ba3154c87ecc6d9faf6947.1711464583.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
98 lines
1.7 KiB
Bash
98 lines
1.7 KiB
Bash
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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##############################################################################
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# Defines
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: "${WAIT_TIMEOUT:=20}"
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BUSYWAIT_TIMEOUT=$((WAIT_TIMEOUT * 1000)) # ms
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# Kselftest framework requirement - SKIP code is 4.
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ksft_skip=4
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# namespace list created by setup_ns
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NS_LIST=""
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##############################################################################
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# Helpers
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busywait()
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{
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local timeout=$1; shift
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local start_time="$(date -u +%s%3N)"
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while true
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do
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local out
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out=$("$@")
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local ret=$?
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if ((!ret)); then
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echo -n "$out"
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return 0
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fi
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local current_time="$(date -u +%s%3N)"
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if ((current_time - start_time > timeout)); then
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echo -n "$out"
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return 1
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fi
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done
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}
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cleanup_ns()
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{
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local ns=""
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local errexit=0
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local ret=0
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# disable errexit temporary
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if [[ $- =~ "e" ]]; then
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errexit=1
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set +e
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fi
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for ns in "$@"; do
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ip netns delete "${ns}" &> /dev/null
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if ! busywait $BUSYWAIT_TIMEOUT ip netns list \| grep -vq "^$ns$" &> /dev/null; then
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echo "Warn: Failed to remove namespace $ns"
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ret=1
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fi
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done
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[ $errexit -eq 1 ] && set -e
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return $ret
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}
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cleanup_all_ns()
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{
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cleanup_ns $NS_LIST
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}
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# setup netns with given names as prefix. e.g
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# setup_ns local remote
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setup_ns()
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{
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local ns=""
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local ns_name=""
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local ns_list=""
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for ns_name in "$@"; do
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# Some test may setup/remove same netns multi times
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if unset ${ns_name} 2> /dev/null; then
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ns="${ns_name,,}-$(mktemp -u XXXXXX)"
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eval readonly ${ns_name}="$ns"
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else
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eval ns='$'${ns_name}
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cleanup_ns "$ns"
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fi
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if ! ip netns add "$ns"; then
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echo "Failed to create namespace $ns_name"
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cleanup_ns "$ns_list"
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return $ksft_skip
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fi
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ip -n "$ns" link set lo up
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ns_list="$ns_list $ns"
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done
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NS_LIST="$NS_LIST $ns_list"
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}
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