Automated cherry pick of #5364: Stop using /bin/sh for OVS commands #5372
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We are currently using the shell (/bin/sh) to run ovs-appctl and ovs-ofctl commands, but there does not seem to be a reason to do so. Instead, we can invoke the binary directly with exec.Command and pass the arguments as a slice. Before this change, ovsVSwitchdUDS would return "/var/run/openvswitch/ovs-vswitchd.*.ctl" as a fallback value in case the PID of ovs-vswitchd could not be determined. The shell would then expand the wildcard patterns. I now believe that it is better to return an error in that case. We want to make sure that we use a valid file always (and returning the glob pattern would cause an error if multiple files match). If we run into issues because of this approach, we can update the code to expand the glob pattern programmatically and, if a single path matches, we can return that path. Signed-off-by: Antonin Bas <abas@vmware.com>
Signed-off-by: Antonin Bas <abas@vmware.com>
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Cherry pick of #5364 on release-1.13.
#5364: Stop using /bin/sh for OVS commands
For details on the cherry pick process, see the cherry pick requests page.