mirror of
https://github.com/systemd/systemd-stable.git
synced 2024-12-25 23:21:33 +03:00
205 lines
7.0 KiB
Bash
205 lines
7.0 KiB
Bash
#! /bin/sh -e
|
|
#
|
|
# Map cdrom, cd-r, cdrw, dvd, dvdrw, dvdram, cdm, cdmrw, cdram
|
|
# to suitable devices.
|
|
# Prefers cd* for DVD-incapable and cdrom and dvd for read-only devices.
|
|
# First parameter is the kernel device name.
|
|
# Second parameter, if present, must be "-d" => output the full mapping.
|
|
#
|
|
# Usage:
|
|
# BUS="ide", KERNEL="hd[a-z]", PROGRAM="/etc/udev/cdsymlinks.sh %k", SYMLINK="%c{1} %c{2} %c{3} %c{4} %c{5} %c{6}"
|
|
# BUS="scsi", KERNEL="sr[0-9]*", PROGRAM="/etc/udev/cdsymlinks.sh %k", SYMLINK="%c{1} %c{2} %c{3} %c{4} %c{5} %c{6}"
|
|
# BUS="scsi", KERNEL="scd[0-9]*", PROGRAM="/etc/udev/cdsymlinks.sh %k", SYMLINK="%c{1} %c{2} %c{3} %c{4} %c{5} %c{6}"
|
|
# (this last one is "just in case")
|
|
#
|
|
# (c) 2004, 2005 Darren Salt <linux@youmustbejoking.demon.co.uk>
|
|
#
|
|
# Last modified: 2005-02-15
|
|
|
|
test -e /proc/sys/dev/cdrom/info || exit 0
|
|
|
|
# Defaults; it's better that you alter them in /etc/udev/cdsymlinks.conf
|
|
OUTPUT='CD CDRW DVD DVDRW DVDRAM'
|
|
NUMBERED_LINKS=1
|
|
LINK_ZERO=0
|
|
|
|
test -e /etc/udev/cdsymlinks.conf && . /etc/udev/cdsymlinks.conf
|
|
|
|
DEBUG=''
|
|
test "$2" = '-d' && DEBUG=1
|
|
|
|
|
|
# Array emulation. 'setArray FOO a b c' gives FOO=3 FOO_1=a FOO_2=b FOO_3=c
|
|
setArray () {
|
|
local _ARRAY=$1
|
|
local _INDEX=0
|
|
shift
|
|
while test $# -ne 0; do
|
|
eval ${_ARRAY}_$_INDEX="$1"
|
|
_INDEX=$(($_INDEX+1))
|
|
shift
|
|
done
|
|
eval $_ARRAY=$_INDEX
|
|
}
|
|
|
|
ix () { eval echo -n \$$1_$2; }
|
|
ixs () { eval $1_$2="$3"; }
|
|
|
|
# Args: variable, value
|
|
# Returns true if value is not in variable (a whitespace-separated list)
|
|
notin () {
|
|
test "$2" = '' && return 0
|
|
local i
|
|
for i in `eval echo '$'$1`; do
|
|
test "$i" != "$2" || return 1
|
|
done
|
|
}
|
|
|
|
|
|
# Scan /proc/sys/dev/cdrom/info for details on the present devices
|
|
setArray DEVICES `sed -re '/^drive name:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray DVDRAMs `sed -re '/^Can write DVD-RAM:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray DVDRWs `sed -re '/^Can write DVD-R:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray DVDs `sed -re '/^Can read DVD:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray CDRWs `sed -re '/^Can write CD-RW:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray CDRs `sed -re '/^Can write CD-R:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray CDMRWs `sed -re '/^Can write MRW:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray CDMs `sed -re '/^Can read MRW:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
setArray CDRAMs `sed -re '/^Can write RAM:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
|
|
|
|
# How many devices do we have?
|
|
NumDevs=$(($DEVICES-1))
|
|
Count=''
|
|
i=-1
|
|
while test $i -ne $NumDevs; do
|
|
i=$(($i+1));
|
|
Count="$i${Count:+ }$Count";
|
|
done
|
|
|
|
# Fill in any missing capabilities information (assume not capable)
|
|
for i in $Count; do
|
|
test "`ix DVDRAMs $i`" != '' || ixs DVDRAMs $i 0
|
|
test "`ix DVDRWs $i`" != '' || ixs DVDRWs $i 0
|
|
test "`ix DVDs $i`" != '' || ixs DVDs $i 0
|
|
test "`ix CDRWs $i`" != '' || ixs CDRWs $i 0
|
|
test "`ix CDRs $i`" != '' || ixs CDRs $i 0
|
|
test "`ix CDMRWs $i`" != '' || ixs CDMRWs $i 0
|
|
test "`ix CDMs $i`" != '' || ixs CDMs $i 0
|
|
test "`ix CDRAMs $i`" != '' || ixs CDRAMs $i 0
|
|
done
|
|
|
|
DVDRAM=''
|
|
DVDRW=''
|
|
DVD=''
|
|
CDRW=''
|
|
CDR=''
|
|
CDMRW=''
|
|
CDM=''
|
|
CDRAM=''
|
|
CD=''
|
|
|
|
# Calculate symlink->device mappings.
|
|
# We need to be careful about how we assign mappings because we want
|
|
# read-only devices to have /dev/cdrom and /dev/dvd.
|
|
# Hot-plugged CD/DVD devices may well cause this scheme some problems.
|
|
for i in $Count; do
|
|
test "`ix DVDRAMs $i`" = 1 && DVDRAM="$DVDRAM `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
test "`ix DVDRWs $i`" = 1 && DVDRW="$DVDRW `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
test "`ix DVDs $i`" = 1 && DVD="$DVD `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
test "`ix CDRWs $i`" = 1 && CDRW="$CDRW `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
test "`ix CDRs $i`" = 1 && CDR="$CDR `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
test "`ix CDMRWs $i`" = 1 && CDMRW="$CDMRW `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
test "`ix CDMs $i`" = 1 && CDM="$CDM `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
test "`ix CDRAMs $i`" = 1 && CDRAM="$CDRAM `ix DEVICES $i`"
|
|
done
|
|
for i in $Count; do
|
|
CD="$CD `ix DEVICES $i`"
|
|
done
|
|
|
|
# Debug output
|
|
if test "$DEBUG" = 1; then
|
|
echo 'Devices:' `for i in $Count; do ix DEVICES $i; echo -n \ ; done`
|
|
echo 'CDROM : (all)' $CD
|
|
echo 'CD-R :' `for i in $Count; do ix CDRs $i; echo -n \ ; done` $CDR
|
|
echo 'CDRW :' `for i in $Count; do ix CDRWs $i; echo -n \ ; done` $CDRW
|
|
echo 'DVD :' `for i in $Count; do ix DVDs $i; echo -n \ ; done` $DVD
|
|
echo 'DVDRW :' `for i in $Count; do ix DVDRWs $i; echo -n \ ; done` $DVDRW
|
|
echo 'DVDRAM :' `for i in $Count; do ix DVDRAMs $i; echo -n \ ; done` $DVDRAM
|
|
echo 'CDMRW :' `for i in $Count; do ix CDMRWs $i; echo -n \ ; done` $CDMRW
|
|
echo 'CDWMRW :' `for i in $Count; do ix CDMs $i; echo -n \ ; done` $CDM
|
|
echo 'CDRAM :' `for i in $Count; do ix CDRAMs $i; echo -n \ ; done` $CDRAM
|
|
fi
|
|
|
|
# Prepare symlink names output
|
|
do_output () {
|
|
test "`eval echo '$'$3`" = '' && return
|
|
local i
|
|
local COUNT=$4
|
|
local DEVLS="`ls -dl \"/dev/$2\" \"/dev/$2\"[0-9]* 2>/dev/null`"
|
|
local PRESENT="`echo "$DEVLS" |
|
|
sed -re 's!^.* /dev/('$2'[[:digit:]]*) -> [^[:space:]]+$!\1!'`"
|
|
for i in `eval echo '$'$3`; do
|
|
# First, we look for existing symlinks to the target device.
|
|
local DEVPRESENT="`echo "$DEVLS" |
|
|
sed -re 's!^.* /dev/('$2'[[:digit:]]*) -> '$i'$!\1!; t X; d; :X'`"
|
|
if test "$DEVPRESENT" != ""; then
|
|
# Existing symlinks found - don't output a new one.
|
|
# If the target dev ($1) is the current dev ($i), we output their names.
|
|
test -z "$4" || return;
|
|
test "$1" = "$i" && echo " $DEVPRESENT" | sed -e 'N; $ s/\n/ /'
|
|
else
|
|
# If we found no existing symlinks for the target device...
|
|
# Find the next available (not present) symlink name.
|
|
# We always need to do this for reasons of output consistency: if a
|
|
# symlink is created by udev as a result of use of this program, we
|
|
# DON'T want different output!
|
|
until notin PRESENT "$2$COUNT"; do
|
|
test -z "$4" || return;
|
|
COUNT=$(($COUNT+1))
|
|
done
|
|
# If the target dev ($1) is the current dev ($i), we output its name.
|
|
if test $(($NUMBERED_LINKS)) -ne 0 || test -z "$COUNT"; then
|
|
test "$i" != "$1" || echo -n " $2$COUNT"
|
|
fi
|
|
# If the link isn't in our "existing links" list, add it and increment
|
|
# our counter.
|
|
if notin PRESENT "$2$COUNT"; then
|
|
test -z "$4" || return;
|
|
PRESENT="$PRESENT\n$2$COUNT"
|
|
COUNT=$(($COUNT+1))
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
output () {
|
|
do_output "$@"
|
|
test $(($LINK_ZERO)) -eq 0 || do_output "$@" 0
|
|
}
|
|
|
|
# And output it
|
|
notin OUTPUT CD || echo -n "`output "$1" cdrom CD`"
|
|
notin OUTPUT CDR || echo -n "`output "$1" cd-r CDR`"
|
|
notin OUTPUT CDRW || echo -n "`output "$1" cdrw CDRW`"
|
|
notin OUTPUT DVD || echo -n "`output "$1" dvd DVD`"
|
|
notin OUTPUT DVDRW || echo -n "`output "$1" dvdrw DVDRW`"
|
|
notin OUTPUT DVDRAM || echo -n "`output "$1" dvdram DVDRAM`"
|
|
notin OUTPUT CDMRW || echo -n "`output "$1" cdmrw CDM`"
|
|
notin OUTPUT CDWMRW || echo -n "`output "$1" cdwmrw CDMRW`"
|
|
notin OUTPUT CDRAM || echo -n "`output "$1" cdram CDRAM`"
|
|
echo
|