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