#! /bin/sh # # scsi-devfs.sh: udev external PROGRAM script # # Copyright 2004 Richard Gooch <rgooch@atnf.csiro.au> # Copyright 2004 Fujitsu Ltd. # Distributed under the GNU Copyleft version 2.0. # # return devfs-names for scsi-devices # Usage in udev.rules: # BUS="scsi", KERNEL="sd*", PROGRAM="/etc/udev/scsi-devfs.sh sd %b %n", NAME="%c{1}", SYMLINK="%c{2} %k %c{3} %c{4}" # BUS="scsi", KERNEL="sr*", PROGRAM="/etc/udev/scsi-devfs.sh sr %b %n", NAME="%c{1}", SYMLINK="%c{2} %k %c{3} %c{4}" # BUS="scsi", KERNEL="st*", PROGRAM="/etc/udev/scsi-devfs.sh st %b %n", NAME="%c{1}", SYMLINK="%c{2} %k %c{3} %c{4}" # BUS="scsi", KERNEL="sg*", PROGRAM="/etc/udev/scsi-devfs.sh sg %b %n", NAME="%c{1}", SYMLINK="%c{2} %k %c{3} %c{4}" # Find out where sysfs is mounted. Exit if not available sysfs=`fgrep sysfs /proc/mounts | awk '{print $2}'` if [ "$sysfs" = "" ]; then echo "sysfs is required" exit 1 fi cd $sysfs/bus/scsi/devices case "$1" in sd) # Extract partition component if [ "$3" = "" ]; then lpart="disc" spart="" else lpart="part$3" spart="p$3" fi ;; sr) lpart="cdrom" spart="" ;; st) # Not supported yet exit 1 ;; sg) lpart="generic" spart="" ;; *) exit 1 ;; esac # Extract SCSI logical address components scsi_host=`echo $2 | cut -f 1 -d:` scsi_bus=`echo $2 | cut -f 2 -d:` scsi_target=`echo $2 | cut -f 3 -d:` scsi_lun=`echo $2 | cut -f 4 -d:` # Generate long and short common name parts l_com="bus$scsi_bus/target$scsi_target/lun$scsi_lun/$lpart" s_com="b${scsi_bus}t${scsi_target}u${scsi_lun}$spart" # Generate long and short logical names l_log="scsi/host$scsi_host/$l_com" s_log="$1/c${scsi_host}${s_com}" readlink $2 | fgrep -q pci if [ "$?" != "0" ]; then # Not a PCI controller, show logical locations only echo $l_log $s_log exit 0 fi # Extract PCI address tmp=`readlink $2 | sed -e 's@/host.*/.*@@'` pci_addr=`basename "$tmp"` pci_domain=`echo $pci_addr | cut -f 1 -d:` pci_bus=`echo $pci_addr | cut -f 2 -d:` pci_slot=`echo $pci_addr | tr . : | cut -f 3 -d:` pci_function=`echo $pci_addr | cut -f 2 -d.` # Generate long and short physical names l_pci="domain$pci_domain/bus$pci_bus/slot$pci_slot/function$pci_function" l_phy="bus/pci/$l_pci/scsi/$l_com" s_phy="$1/pci/$pci_addr/$s_com" echo $l_phy $s_phy $l_log $s_log