Messages in this thread | | | Date | Sun, 23 Jan 2005 05:19:11 +0100 | From | Kay Sievers <> | Subject | [PATCH 0/7] driver core: export MAJOR/MINOR to the hotplug env |
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This patch sequence moves the creation of the sysfs "dev" file of the class devices into the driver core. The struct class_device contains a dev_t value now. If set, the driver core will create the "dev" file containing the major/minor numbers automatically.
The MAJOR/MINOR values are also exported to the hotplug environment. This makes it easy for userspace, especially udev to know if it should wait for a "dev" file to create a device node or if it can just ignore the event. We currently carry a compiled in blacklist around for that reason.
It would also be possible to run some "tiny udev" while sysfs is not available - just by reading the hotplug call or the netlink-uevent.
Thanks, Kay
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