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tst: Extend cross-test-ssh.sh to support passing glibc tunables
This patch adds new flag --glibctunables to the cross-test-ssh.sh script to pass Glibc tunables to the system on which tests are executed. The value to pass can be also provided via the GLIBC_TUNABLES environment variable. This works similar to the TIMEOUTFACTOR variable. Sometimes it is useful to cross test glibc with some non-default tunable, and a global environment variable is the easiest way to inject some tunable value into most tests. With this patch using cross-test-ssh.sh script becomes very similar to running a test natively on the local host when using non-default tunable is important. Reviewed-by: Arjun Shankar <arjun@redhat.com>
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@ -32,6 +32,9 @@ instead of ordinary 'ssh'.
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If the '--timeoutfactor FACTOR' flag is present, set TIMEOUTFACTOR on
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the remote machine to the specified FACTOR.
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If the '--glibctunables VALUE' flag is present, set GLIBC_TUNABLES on
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the remote machine to the specified VALUE.
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If the '--allow-time-setting' flag is present, set
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GLIBC_TEST_ALLOW_TIME_SETTING on the remote machine to indicate that
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time can be safely adjusted (e.g. on a virtual machine).
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@ -66,6 +69,7 @@ appropriately."
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ssh='ssh'
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timeoutfactor=$TIMEOUTFACTOR
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glibctunables=$GLIBC_TUNABLES
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while [ $# -gt 0 ]; do
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case "$1" in
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@ -85,6 +89,14 @@ while [ $# -gt 0 ]; do
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timeoutfactor="$1"
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;;
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"--glibctunables")
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shift
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if [ $# -lt 1 ]; then
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break
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fi
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glibctunables="$1"
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;;
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"--allow-time-setting")
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settimeallowed="1"
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;;
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@ -135,6 +147,12 @@ if [ "$timeoutfactor" ]; then
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${command}"
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fi
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# Add command to set glibc tunables, if required.
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if [ "$glibctunables" ]; then
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command="export GLIBC_TUNABLES=$(bourne_quote "$glibctunables")
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${command}"
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fi
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# Add command to set the info that time on target can be adjusted,
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# if required.
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# Serialize execution of this script on target to prevent from unintended
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