mdevd
Software
skarnet.org

The mdevd-coldplug program

mdevd-coldplug performs a coldplug: it scans /sys for all registered devices an uevent manager would want to perform actions on, and generates uevents for all these devices.

Interface

     mdevd-coldplug [ -s slashsys ]

• mdevd-coldplug scans /sys for devices.
• For every suitable device it finds, it generates an uevent and writes it to its stdout, using the same format as mdevd-netlink.
• It exits when it has finished scanning.

This implies that the mdevd-coldplug | mdevd command line will function as a coldplug manager, just like mdev -s.

Options

• -s slashsys : assume the sysfs pseudo-filesystem is mounted on slashsys. Default is /sys.

Exit codes

• 0: success
• 111: system call failed

Notes

• mdevd-coldplug is a short-lived program, just like mdev -s.
• Unlike mdev -s, however, mdevd-coldplug does not act on the uevents it generates. It simply prints them. This allows for easy debugging.
• To act on the uevents, simply pipe the output of mdevd-coldplug into mdevd.