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50 lines
1.6 KiB
Bash
Executable file
50 lines
1.6 KiB
Bash
Executable file
#!/bin/sh
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#exec >/dev/null
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exec 2>&1
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exec </dev/null
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pwd="$PWD"
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if="${PWD##*/ifplugd_}"
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echo "* Upping iface $if"
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ip link set dev "$if" up || exec sleep 5
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echo "* Starting ifplugd on $if [$$]"
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exec \
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env - PATH="$PATH" \
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softlimit \
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setuidgid root \
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ifplugd -aqlMns -t3 -u8 -d8 -i "$if" -r "$pwd/ifplugd_handler"
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# We use -t3 to wake ifplugd up less often.
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# If after three tests (3*3=9 > 8) link state seen to be different,
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# the handler will be called.
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# IOW: short link losses will be ignored, longer ones
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# will trigger DHCP reconfiguration and such (see handler code).
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# -l makes ifplugd run either "up" or "down" script on startup.
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# For example, if wired eth cable is unplugged, this stops dhcp service
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# from pointlessly trying to get a lease.
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# -q means that stopping monitoring does not stop dhcp/zcip/etc:
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# presumably, admin decided to control them manually.
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# -M prevents frequent respawning if device does not exist (yet?)
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#-a Don't up interface automatically
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#-p Don't run "up" script on startup
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#-q Don't run "down" script on exit
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#-l Always run script on startup
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#-n Do not daemonize
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#-s Do not log to syslog
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#-t SECS Poll time in seconds
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#-u SECS Delay before running script after link up
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#-d SECS Delay after link down
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#-i IFACE Interface
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#-M Monitor creation/destruction of interface (otherwise it must exist)
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#-r PROG Script to run
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#-x ARG Extra argument for script
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#-I Don't exit on nonzero exit code from script
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#-f/-F Treat link detection error as link down/link up (otherwise exit on error)
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#-m MODE API mode (mii, priv, ethtool, wlan, auto)
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#-k Kill running daemon
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