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60b02126a3
Signed-off-by: Andreas Schneider <asn@samba.org> Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
32 lines
1.2 KiB
Bash
Executable File
32 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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#
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# Helper script. If you want a 2nd shell that communicates with the testenv DC
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# you can use the nsenter command to change the namespace you're in. However,
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# this command is a bit unwieldy and changes depending on the testenv PID.
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# We can generate a helper script on the fly that abstracts all this
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# complexity, allowing you to use the same, simple command to change the
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# namespace that you're in, e.g.
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# st/ad_dc/nsenter.sh
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pid=$1
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exports_file=$2
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# The basic command to enter the testenv's network namespace.
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# We enter the user namespace as well (as ourself, which is really the root
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# user for the namespace), otherwise we need sudo to make this work.
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nsenter_cmd="nsenter -t $pid --net --user --preserve-credentials"
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# By default, the nsenter command will just start a new shell in the namespace.
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# we use a wrapper helper script, which first loads all the environment
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# variables that are usually defined in selftest (and prints some basic help).
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helper_script="$(dirname $0)/nsenter-helper.sh $exports_file"
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# generate the dynamic script
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dyn_script="$(dirname $2)/nsenter.sh"
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echo "#!/bin/sh" >$dyn_script
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echo "$nsenter_cmd $helper_script" >>$dyn_script
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chmod 755 $dyn_script
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# return the script we created
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echo "$dyn_script"
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