comedilib/etc/udev/z99_comedi.rules

#This file provides some example udev rules which may be helpful for comedi.
#It includes rules for creating symlinks to the device file with 
#persistent names in /dev/comedi/by-path/, setting permissions and
#group ownership on the comedi device files, and examples showing
#adjustment of a device file's buffer size.

SUBSYSTEM!="comedi", GOTO="comedi_end"


ACTION!="add", GOTO="comedi_add_end"


#create symlink with persistent name based on hardware path
KERNEL=="comedi[0-9]*", KERNEL!="comedi[0-9]*_subd[0-9]*", SUBSYSTEMS=="pci", SYMLINK+="comedi/by-path/pci-$id"

#persistent subdevice symlinks
KERNEL=="comedi[0-9]*subd[0-9]*", SUBSYSTEMS=="pci", SYMLINK+="comedi/by-path/pci-$id_subd%n"


#The following line would automatically run comedi_config on main device file
#to adjust the read buffer size for a specific board at pci path
#0000:07:0d.0 (bus 0x7, slot 0xd).
#KERNEL=="comedi[0-9]*", KERNEL!="comedi[0-9]*_subd[0-9]*", SUBSYSTEMS=="pci", KERNELS=="0000:07:0d.0", RUN+="/usr/local/sbin/comedi_config $tempnode --read-buffer 1024"

#Here we do the same, except we are matching by pci vendor/device id instead of bus/slot
#KERNEL=="comedi[0-9]*", KERNEL!="comedi[0-9]*_subd[0-9]*", SUBSYSTEMS=="pci", ATTRS{vendor}=="0x1093", ATTRS{device}=="0x70bf", RUN+="/usr/local/sbin/comedi_config $tempnode --read-buffer 1024"


# wide open device file permissions
KERNEL=="comedi[0-9]*", MODE="0666"

# device files restricted to the "comedi" group
#KERNEL=="comedi[0-9]*", MODE="0660", GROUP="comedi"

# device files restricted to the "iocard" group
#KERNEL=="comedi[0-9]*", MODE="0660", GROUP="iocard"


LABEL="comedi_add_end"


LABEL="comedi_end"