mirror of
https://github.com/systemd/systemd.git
synced 2024-11-05 06:52:22 +03:00
119 lines
2.6 KiB
Bash
119 lines
2.6 KiB
Bash
#!/bin/sh -e
|
|
|
|
# This script is run if an optical drive lacks a rule for persistent naming.
|
|
#
|
|
# It adds symlinks for optical drives based on the device class determined
|
|
# by cdrom_id and used ID_PATH to identify the device.
|
|
#
|
|
# (C) 2006 Marco d'Itri <md@Linux.IT>
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License as published by the
|
|
# Free Software Foundation version 2 of the License.
|
|
|
|
RULES_FILE="/etc/udev/rules.d/70-persistent-cd.rules"
|
|
|
|
. /lib/udev/rule_generator.functions
|
|
|
|
find_next_available() {
|
|
raw_find_next_available "$(find_all_rules 'SYMLINK+=' $1)"
|
|
}
|
|
|
|
write_rule() {
|
|
local match="$1"
|
|
local link="$2"
|
|
local comment="$3"
|
|
|
|
{
|
|
if [ "$PRINT_HEADER" ]; then
|
|
PRINT_HEADER=
|
|
echo "# This file was automatically generated by the $0"
|
|
echo "# program, probably run by the cd-aliases-generator.rules rules file."
|
|
echo "#"
|
|
echo "# You can modify it, as long as you keep each rule on a single line"
|
|
echo "# and set the \$GENERATED variable."
|
|
echo ""
|
|
fi
|
|
|
|
[ "$comment" ] && echo "# $comment"
|
|
echo "$match, SYMLINK+=\"$link\", ENV{GENERATED}=\"1\""
|
|
} >> $RULES_FILE
|
|
SYMLINKS="$SYMLINKS $link"
|
|
}
|
|
|
|
if [ -z "$DEVPATH" ]; then
|
|
echo "Missing \$DEVPATH." >&2
|
|
exit 1
|
|
fi
|
|
if [ -z "$ID_CDROM" ]; then
|
|
echo "$DEVPATH is not a CD reader." >&2
|
|
exit 1
|
|
fi
|
|
|
|
if [ "$1" ]; then
|
|
METHOD="$1"
|
|
else
|
|
case "$ID_BUS" in
|
|
usb|ieee1394)
|
|
METHOD='by-id'
|
|
;;
|
|
|
|
*)
|
|
METHOD='by-path'
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
case "$METHOD" in
|
|
by-path)
|
|
if [ -z "$ID_PATH" ]; then
|
|
echo "$DEVPATH not supported by path_id. by-id may work." >&2
|
|
exit 1
|
|
fi
|
|
RULE="ENV{ID_PATH}==\"$ID_PATH\""
|
|
;;
|
|
|
|
by-id)
|
|
if [ "$ID_SERIAL" ]; then
|
|
RULE="ENV{ID_SERIAL}==\"$ID_SERIAL\""
|
|
elif [ "$ID_MODEL" -a "$ID_REVISION" ]; then
|
|
RULE="ENV{ID_MODEL}==\"$ID_MODEL\", ENV{ID_REVISION}==\"$ID_REVISION\""
|
|
else
|
|
echo "$DEVPATH not supported by ata_id. by-path may work." >&2
|
|
exit 1
|
|
fi
|
|
;;
|
|
|
|
*)
|
|
echo "Invalid argument (must be either by-path or by-id)." >&2
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
# Prevent concurrent processes from modifying the file at the same time.
|
|
lock_rules_file
|
|
|
|
# Check if the rules file is writeable.
|
|
choose_rules_file
|
|
|
|
link_num=$(find_next_available 'cdrom[0-9]*')
|
|
|
|
match="ENV{ID_CDROM}==\"?*\", $RULE"
|
|
|
|
comment="$ID_MODEL ($ID_PATH)"
|
|
|
|
write_rule "$match" "cdrom$link_num" "$comment"
|
|
[ "$ID_CDROM_CD_R" -o "$ID_CDROM_CD_RW" ] && \
|
|
write_rule "$match" "cdrw$link_num"
|
|
[ "$ID_CDROM_DVD" ] && \
|
|
write_rule "$match" "dvd$link_num"
|
|
[ "$ID_CDROM_DVD_R" -o "$ID_CDROM_DVD_RW" -o "$ID_CDROM_DVD_RAM" ] && \
|
|
write_rule "$match" "dvdrw$link_num"
|
|
|
|
unlock_rules_file
|
|
|
|
echo $SYMLINKS
|
|
|
|
exit 0
|
|
|