SOURCES: udev-write_cd_aliases (NEW), udev.rules - create persiste...

[freetz]

Author: freetz                       Date: Wed Mar 29 16:35:05 2006 GMT
Module: SOURCES                       Tag: HEAD
---- Log message:
- create persistent cd symlinks (by Marco d'Itri)

---- Files affected:
SOURCES:
   udev-write_cd_aliases (NONE -> 1.1)  (NEW), udev.rules (1.30 -> 1.31) 

---- Diffs:

================================================================
Index: SOURCES/udev-write_cd_aliases
diff -u /dev/null SOURCES/udev-write_cd_aliases:1.1
--- /dev/null	Wed Mar 29 18:35:05 2006
+++ SOURCES/udev-write_cd_aliases	Wed Mar 29 18:35:00 2006
@@ -0,0 +1,134 @@
+#!/bin/sh -e
+
+RULES_FILE="/etc/udev/rules.d/60-persistent-cd.rules"
+
+##############################################################################
+lock_rules_file() {
+  RULES_LOCK="/dev/.udev/.lock-${RULES_FILE##*/}"
+
+  retry=30
+  while ! mkdir $RULES_LOCK 2> /dev/null; do
+    if [ $retry -eq 0 ]; then
+       echo "Cannot lock $RULES_FILE!" >&2
+       exit 2
+    fi
+    sleep 1
+    retry=$(($retry - 1))
+  done
+}
+
+unlock_rules_file() {
+  rmdir $RULES_LOCK || true
+}
+
+# returns true if a directory is writeable
+writeable() {
+  if ln -s check $1/.is-writeable 2> /dev/null; then
+    rm -f $1/.is-writeable
+    return 0
+  else
+    return 1
+  fi
+}
+
+choose_rules_file() {
+  [ -e "$RULES_FILE" ] || PRINT_HEADER=1
+  if writeable ${RULES_FILE%/*}; then
+    RO_RULES_FILE='/dev/null'
+  else
+    RO_RULES_FILE=$RULES_FILE
+    RULES_FILE="/dev/.udev/tmp-rules--${RULES_FILE##*/}"
+  fi
+}
+
+##############################################################################
+find_next_available() {
+  local links="$(find_all_symlinks $1)"
+
+  local basename=${links%%[0-9]*}
+  local max=-1
+  for name in $links; do
+    local num=${name#$basename}
+    [ "$num" ] || num=0
+    [ $num -gt $max ] && max=$num
+  done
+
+  max=$(($max + 1))
+  # "name0" actually is just "name"
+  [ $max -eq 0 ] && return
+  echo "$max"
+}
+
+find_all_symlinks() {
+  local linkre="$1"
+  local match="$2"
+
+  [ -e $RULES_FILE ] || return
+
+  local search='.*[[:space:],]SYMLINK+="\('"$linkre"'\)"[[:space:]]*\(,.*\|\\\|\)$'
+
+  sed -n -e "${match}s/${search}/\1/p" $RO_RULES_FILE $RULES_FILE
+}
+
+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 "ACTION==\"add\", $match, SYMLINK+=\"$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
+
+# Prevent parallel processes from modifying the file at the same time.
+lock_rules_file
+
+# Check if the rules file is writeable.
+choose_rules_file
+
+link_num=$(find_next_available 'cdrom[0-9]*')
+
+#match="ENV{ID_PATH}==\"$ID_PATH\""
+
+#kernel=${DEVPATH##*/}
+#match="KERNEL==\"$kernel\""
+
+id=${PHYSDEVPATH##*/}
+match="BUS==\"$PHYSDEVBUS\", ID==\"$id\""
+
+comment="$ID_MODEL ($ID_PATH)"
+
+			  write_rule "$match" "cdrom$link_num" "$comment"
+[ "$ID_CDROM_CD_RW" ]  && write_rule "$match" "cdrw$link_num"
+[ "$ID_CDROM_DVD" ]    && write_rule "$match" "dvd$link_num"
+[ "$ID_CDROM_DVD_RW" ] && write_rule "$match" "dvdrw$link_num"
+
+unlock_rules_file
+
+echo $SYMLINKS
+
+exit 0
+
+

================================================================
Index: SOURCES/udev.rules
diff -u SOURCES/udev.rules:1.30 SOURCES/udev.rules:1.31
--- SOURCES/udev.rules:1.30	Tue Mar 28 20:13:39 2006
+++ SOURCES/udev.rules	Wed Mar 29 18:35:00 2006
@@ -40,17 +40,12 @@
 BUS=="scsi",	KERNEL="sr[0-9]*", ACTION=="add", IMPORT="/sbin/cdrom_id --export $tempnode"
 BUS=="scsi",	KERNEL="scd[a-z]", ACTION=="add", IMPORT="/sbin/cdrom_id --export $tempnode"
 
+ENV{ID_CDROM}=="?*", PROGRAM="write_cd_aliases", SYMLINK+="%c"
+
 # disk devices
 KERNEL=="sd*",		NAME="%k", GROUP="disk"
 KERNEL=="dasd*",	NAME="%k", GROUP="disk"
 KERNEL=="ataraid*",	NAME="%k", GROUP="disk"
-
-# compaq smart array
-KERNEL=="cciss*",	PROGRAM="/lib/udev/raid-devfs.sh %k", NAME="%c{1}", SYMLINK+="%k"
-KERNEL=="ida*",		PROGRAM="/lib/udev/raid-devfs.sh %k", NAME="%c{1}", SYMLINK+="%k"
-
-# mylex
-KERNEL=="rd*",		PROGRAM="/lib/udev/raid-devfs.sh %k", NAME="%c{1}", SYMLINK+="%k"
 
 # dri devices
 SUBSYSTEM=="graphics",	KERNEL=="3dfx*",	NAME="%k", GROUP="video"
================================================================

---- CVS-web:
    http://cvs.pld-linux.org/SOURCES/udev.rules?r1=1.30&r2=1.31&f=u