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392175d6e8
/bin/sh and /usr/bin/env are the only two binaries that NixOS provides at a fixed path (outside a buildFHSUserEnv sandbox). This discussion was split from #11004. Signed-off-by: Anders Kaseorg <andersk@mit.edu>
43 lines
906 B
Bash
Executable File
43 lines
906 B
Bash
Executable File
#!/usr/bin/env bash
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set -e
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usage() {
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echo "usage: lxc-wait -n CONTAINER" >&2
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exit 1
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}
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args="$(getopt -o +n: --long help,name: -- "$@")"
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eval "set -- $args"
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while true; do
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case "$1" in
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--help) usage;;
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-n|--name) CONTAINER_NAME="$2"; shift; shift;;
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--) shift; break;;
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*) usage;;
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esac
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done
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if [ -z "$CONTAINER_NAME" ] || [ "$#" -gt 0 ]; then
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usage
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fi
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if [ "$EUID" -ne 0 ]; then
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echo "error: this script must be run as root" >&2
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exit 1
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fi
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# We poll.
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for _ in {1..60}; do
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echo "lxc-wait: $CONTAINER_NAME: polling for boot..." >&2
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runlevel="$(lxc-attach -n "$CONTAINER_NAME" -- runlevel 2>/dev/null)" \
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|| { sleep 1; continue; }
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if [ "$runlevel" != "${0%[0-9]}" ]; then
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echo "lxc-wait: $CONTAINER_NAME: booted!" >&2
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exit 0
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fi
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sleep 1
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done
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echo "error: timeout waiting for container to boot" >&2
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exit 1
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