3 # Map cdrom, cd-r, cdrw, dvd, dvdrw, dvdram, cdm, cdmrw, cdram
5 # Prefers cd* for DVD-incapable and cdrom and dvd for read-only devices.
6 # First parameter is the kernel device name.
7 # Second parameter, if present, must be "-d" => output the full mapping.
10 # 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}"
11 # 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}"
12 # 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}"
13 # (this last one is "just in case")
15 # (c) 2004, 2005 Darren Salt <linux@youmustbejoking.demon.co.uk>
17 # Last modified: 2005-02-15
19 test -e /proc/sys/dev/cdrom/info || exit 0
21 # Defaults; it's better that you alter them in /etc/udev/cdsymlinks.conf
22 OUTPUT='CD CDRW DVD DVDRW DVDRAM'
26 test -e /etc/udev/cdsymlinks.conf && . /etc/udev/cdsymlinks.conf
29 test "$2" = '-d' && DEBUG=1
32 # Array emulation. 'setArray FOO a b c' gives FOO=3 FOO_1=a FOO_2=b FOO_3=c
37 while test $# -ne 0; do
38 eval ${_ARRAY}_$_INDEX="$1"
45 ix () { eval echo -n \$$1_$2; }
46 ixs () { eval $1_$2="$3"; }
48 # Args: variable, value
49 # Returns true if value is not in variable (a whitespace-separated list)
51 test "$2" = '' && return 0
53 for i in `eval echo '$'$1`; do
54 test "$i" != "$2" || return 1
59 # Scan /proc/sys/dev/cdrom/info for details on the present devices
60 setArray DEVICES `sed -re '/^drive name:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
61 setArray DVDRAMs `sed -re '/^Can write DVD-RAM:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
62 setArray DVDRWs `sed -re '/^Can write DVD-R:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
63 setArray DVDs `sed -re '/^Can read DVD:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
64 setArray CDRWs `sed -re '/^Can write CD-RW:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
65 setArray CDRs `sed -re '/^Can write CD-R:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
66 setArray CDMRWs `sed -re '/^Can write MRW:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
67 setArray CDMs `sed -re '/^Can read MRW:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
68 setArray CDRAMs `sed -re '/^Can write RAM:/I! d; s/.*://' /proc/sys/dev/cdrom/info`
70 # How many devices do we have?
71 NumDevs=$(($DEVICES-1))
74 while test $i -ne $NumDevs; do
76 Count="$i${Count:+ }$Count";
79 # Fill in any missing capabilities information (assume not capable)
81 test "`ix DVDRAMs $i`" != '' || ixs DVDRAMs $i 0
82 test "`ix DVDRWs $i`" != '' || ixs DVDRWs $i 0
83 test "`ix DVDs $i`" != '' || ixs DVDs $i 0
84 test "`ix CDRWs $i`" != '' || ixs CDRWs $i 0
85 test "`ix CDRs $i`" != '' || ixs CDRs $i 0
86 test "`ix CDMRWs $i`" != '' || ixs CDMRWs $i 0
87 test "`ix CDMs $i`" != '' || ixs CDMs $i 0
88 test "`ix CDRAMs $i`" != '' || ixs CDRAMs $i 0
101 # Calculate symlink->device mappings.
102 # We need to be careful about how we assign mappings because we want
103 # read-only devices to have /dev/cdrom and /dev/dvd.
104 # Hot-plugged CD/DVD devices may well cause this scheme some problems.
106 test "`ix DVDRAMs $i`" = 1 && DVDRAM="$DVDRAM `ix DEVICES $i`"
109 test "`ix DVDRWs $i`" = 1 && DVDRW="$DVDRW `ix DEVICES $i`"
112 test "`ix DVDs $i`" = 1 && DVD="$DVD `ix DEVICES $i`"
115 test "`ix CDRWs $i`" = 1 && CDRW="$CDRW `ix DEVICES $i`"
118 test "`ix CDRs $i`" = 1 && CDR="$CDR `ix DEVICES $i`"
121 test "`ix CDMRWs $i`" = 1 && CDMRW="$CDMRW `ix DEVICES $i`"
124 test "`ix CDMs $i`" = 1 && CDM="$CDM `ix DEVICES $i`"
127 test "`ix CDRAMs $i`" = 1 && CDRAM="$CDRAM `ix DEVICES $i`"
130 CD="$CD `ix DEVICES $i`"
134 if test "$DEBUG" = 1; then
135 echo 'Devices:' `for i in $Count; do ix DEVICES $i; echo -n \ ; done`
136 echo 'CDROM : (all)' $CD
137 echo 'CD-R :' `for i in $Count; do ix CDRs $i; echo -n \ ; done` $CDR
138 echo 'CDRW :' `for i in $Count; do ix CDRWs $i; echo -n \ ; done` $CDRW
139 echo 'DVD :' `for i in $Count; do ix DVDs $i; echo -n \ ; done` $DVD
140 echo 'DVDRW :' `for i in $Count; do ix DVDRWs $i; echo -n \ ; done` $DVDRW
141 echo 'DVDRAM :' `for i in $Count; do ix DVDRAMs $i; echo -n \ ; done` $DVDRAM
142 echo 'CDMRW :' `for i in $Count; do ix CDMRWs $i; echo -n \ ; done` $CDMRW
143 echo 'CDWMRW :' `for i in $Count; do ix CDMs $i; echo -n \ ; done` $CDM
144 echo 'CDRAM :' `for i in $Count; do ix CDRAMs $i; echo -n \ ; done` $CDRAM
147 # Prepare symlink names output
149 test "`eval echo '$'$3`" = '' && return
152 local DEVLS="`ls -dl \"/dev/$2\" \"/dev/$2\"[0-9]* 2>/dev/null`"
153 local PRESENT="`echo "$DEVLS" |
154 sed -re 's!^.* /dev/('$2'[[:digit:]]*) -> [^[:space:]]+$!\1!'`"
155 for i in `eval echo '$'$3`; do
156 # First, we look for existing symlinks to the target device.
157 local DEVPRESENT="`echo "$DEVLS" |
158 sed -re 's!^.* /dev/('$2'[[:digit:]]*) -> '$i'$!\1!; t X; d; :X'`"
159 if test "$DEVPRESENT" != ""; then
160 # Existing symlinks found - don't output a new one.
161 # If the target dev ($1) is the current dev ($i), we output their names.
162 test -z "$4" || return;
163 test "$1" = "$i" && echo " $DEVPRESENT" | sed -e 'N; $ s/\n/ /'
165 # If we found no existing symlinks for the target device...
166 # Find the next available (not present) symlink name.
167 # We always need to do this for reasons of output consistency: if a
168 # symlink is created by udev as a result of use of this program, we
169 # DON'T want different output!
170 until notin PRESENT "$2$COUNT"; do
171 test -z "$4" || return;
174 # If the target dev ($1) is the current dev ($i), we output its name.
175 if test $(($NUMBERED_LINKS)) -ne 0 || test -z "$COUNT"; then
176 test "$i" != "$1" || echo -n " $2$COUNT"
178 # If the link isn't in our "existing links" list, add it and increment
180 if notin PRESENT "$2$COUNT"; then
181 test -z "$4" || return;
182 PRESENT="$PRESENT\n$2$COUNT"
191 test $(($LINK_ZERO)) -eq 0 || do_output "$@" 0
195 notin OUTPUT CD || echo -n "`output "$1" cdrom CD`"
196 notin OUTPUT CDR || echo -n "`output "$1" cd-r CDR`"
197 notin OUTPUT CDRW || echo -n "`output "$1" cdrw CDRW`"
198 notin OUTPUT DVD || echo -n "`output "$1" dvd DVD`"
199 notin OUTPUT DVDRW || echo -n "`output "$1" dvdrw DVDRW`"
200 notin OUTPUT DVDRAM || echo -n "`output "$1" dvdram DVDRAM`"
201 notin OUTPUT CDMRW || echo -n "`output "$1" cdmrw CDM`"
202 notin OUTPUT CDWMRW || echo -n "`output "$1" cdwmrw CDMRW`"
203 notin OUTPUT CDRAM || echo -n "`output "$1" cdram CDRAM`"