mirror of
https://gitlab.alpinelinux.org/alpine/cloud/tiny-cloud.git
synced 2025-12-14 19:02:45 +03:00
88 lines
1.7 KiB
Bash
Executable File
88 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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# vim:set ft=sh:
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set -e
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: "${LIBDIR:=$PREFIX/lib}"
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. "$LIBDIR/tiny-cloud/common"
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if [ -z "$MDEV" ] || [ -z "$ACTION" ]; then
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log crit "MDEV or ACTION undefined, aborting"
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fi
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IFACE_CFG=/etc/network/interfaces
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ip() {
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local v=-4 lev=info
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if [ "$1" = '-4' ] || [ "$1" = '-6' ]; then
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v="$1"
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shift
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fi
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local op="$2"
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[ "$op" = show ] && lev=debug
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if /sbin/ip "$v" "$@" || [ -n "$FAIL_OK" ]; then
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log "$lev" "OK: ip $v $*"
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else
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log err "FAIL: ip $v $*"
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fi
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}
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interface_up() {
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log info "Bringing up $MDEV"
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# umask so udhcpc PID file isn't non-owner writeable
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(umask 0022 && ifup "$MDEV")
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}
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cleanup_interface() {
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local v pref rtable="${MDEV#eth}"
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let rtable+=10000
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log info "Cleaning up $MDEV"
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# kill related udhcpc, don't panic if it's not there
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kill "$(cat "/run/udhcpc.$MDEV.pid")" || true
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# tidy up /run/ifstate, if it exists
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[ -f /run/ifstate ] && sed -i -e "/^$MDEV=/d" /run/ifstate
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rm -f /run/ifstate."$MDEV".lock
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# remove related rules
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for v in 4 6; do
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for pref in $(ip -"$v" rule show table "$rtable" | cut -d: -f1); do
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ip -"$v" rule del pref "$pref"
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done
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done
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}
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is_networking_started() { service networking status -q 2>/dev/null; }
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log info "STARTING: $ACTION $MDEV"
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if exec 200>>"$IFACE_CFG"; then
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if flock 200; then
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case $ACTION in
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add|"")
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assemble-interfaces
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is_networking_started && interface_up
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;;
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remove)
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assemble-interfaces
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is_networking_started && cleanup_interface
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;;
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*)
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log err "Unknown action '$ACTION'"
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exit 1
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;;
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esac
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else
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log err "Unable to flock $IFACE_CFG"
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exit 1
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fi
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else
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log err "Unable to assign fd 200 to flock $IFACE_CFG"
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exit 1
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fi
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log info "FINISHED: $ACTION $MDEV"
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