chiark / gitweb /
tabs are as useful as a hole in the head
[elogind.git] / src / extras / rule_generator / rule_generator.functions
index 0f1b73850e886613cc165c84a1d06497d6287ee3..2eec1b6abf3f2e26723f2804990eaaa63f1917a9 100644 (file)
@@ -20,94 +20,94 @@ PATH='/usr/bin:/bin:/usr/sbin:/sbin'
 # Read a single line from file $1 in the $DEVPATH directory.
 # The function must not return an error even if the file does not exist.
 sysread() {
-       local file="$1"
-       [ -e "/sys$DEVPATH/$file" ] || return 0
-       local value
-       read value < "/sys$DEVPATH/$file" || return 0
-       echo "$value"
+        local file="$1"
+        [ -e "/sys$DEVPATH/$file" ] || return 0
+        local value
+        read value < "/sys$DEVPATH/$file" || return 0
+        echo "$value"
 }
 
 sysreadlink() {
-       local file="$1"
-       [ -e "/sys$DEVPATH/$file" ] || return 0
-       readlink -f /sys$DEVPATH/$file 2> /dev/null || true
+        local file="$1"
+        [ -e "/sys$DEVPATH/$file" ] || return 0
+        readlink -f /sys$DEVPATH/$file 2> /dev/null || true
 }
 
 # Return true if a directory is writeable.
 writeable() {
-       if ln -s test-link $1/.is-writeable 2> /dev/null; then
-               rm -f $1/.is-writeable
-               return 0
-       else
-               return 1
-       fi
+        if ln -s test-link $1/.is-writeable 2> /dev/null; then
+                rm -f $1/.is-writeable
+                return 0
+        else
+                return 1
+        fi
 }
 
 # Create a lock file for the current rules file.
 lock_rules_file() {
-       RUNDIR=$(udevadm info --run)
-       [ -e "$RUNDIR" ] || return 0
-
-       RULES_LOCK="$RUNDIR/.lock-${RULES_FILE##*/}"
-
-       retry=30
-       while ! mkdir $RULES_LOCK 2> /dev/null; do
-               if [ $retry -eq 0 ]; then
-                        echo "Cannot lock $RULES_FILE!" >&2
-                        exit 2
-               fi
-               sleep 1
-               retry=$(($retry - 1))
-       done
+        RUNDIR=$(udevadm info --run)
+        [ -e "$RUNDIR" ] || return 0
+
+        RULES_LOCK="$RUNDIR/.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() {
-       [ "$RULES_LOCK" ] || return 0
-       rmdir $RULES_LOCK || true
+        [ "$RULES_LOCK" ] || return 0
+        rmdir $RULES_LOCK || true
 }
 
 # Choose the real rules file if it is writeable or a temporary file if not.
 # Both files should be checked later when looking for existing rules.
 choose_rules_file() {
-       RUNDIR=$(udevadm info --run)
-       local tmp_rules_file="$RUNDIR/tmp-rules--${RULES_FILE##*/}"
-       [ -e "$RULES_FILE" -o -e "$tmp_rules_file" ] || PRINT_HEADER=1
-
-       if writeable ${RULES_FILE%/*}; then
-               RO_RULES_FILE='/dev/null'
-       else
-               RO_RULES_FILE=$RULES_FILE
-               RULES_FILE=$tmp_rules_file
-       fi
+        RUNDIR=$(udevadm info --run)
+        local tmp_rules_file="$RUNDIR/tmp-rules--${RULES_FILE##*/}"
+        [ -e "$RULES_FILE" -o -e "$tmp_rules_file" ] || PRINT_HEADER=1
+
+        if writeable ${RULES_FILE%/*}; then
+                RO_RULES_FILE='/dev/null'
+        else
+                RO_RULES_FILE=$RULES_FILE
+                RULES_FILE=$tmp_rules_file
+        fi
 }
 
 # Return the name of the first free device.
 raw_find_next_available() {
-       local links="$1"
-
-       local basename=${links%%[ 0-9]*}
-       local max=-1
-       for name in $links; do
-               local num=${name#$basename}
-               [ "$num" ] || num=0
-               [ $num -gt $max ] && max=$num
-       done
-
-       local max=$(($max + 1))
-       # "name0" actually is just "name"
-       [ $max -eq 0 ] && return
-       echo "$max"
+        local links="$1"
+
+        local basename=${links%%[ 0-9]*}
+        local max=-1
+        for name in $links; do
+                local num=${name#$basename}
+                [ "$num" ] || num=0
+                [ $num -gt $max ] && max=$num
+        done
+
+        local max=$(($max + 1))
+        # "name0" actually is just "name"
+        [ $max -eq 0 ] && return
+        echo "$max"
 }
 
 # Find all rules matching a key (with action) and a pattern.
 find_all_rules() {
-       local key="$1"
-       local linkre="$2"
-       local match="$3"
-
-       local search='.*[[:space:],]'"$key"'"('"$linkre"')".*'
-       echo $(sed -n -r -e 's/^#.*//' -e "${match}s/${search}/\1/p" \
-               $RO_RULES_FILE \
-               $([ -e $RULES_FILE ] && echo $RULES_FILE) \
-               2>/dev/null)
+        local key="$1"
+        local linkre="$2"
+        local match="$3"
+
+        local search='.*[[:space:],]'"$key"'"('"$linkre"')".*'
+        echo $(sed -n -r -e 's/^#.*//' -e "${match}s/${search}/\1/p" \
+                $RO_RULES_FILE \
+                $([ -e $RULES_FILE ] && echo $RULES_FILE) \
+                2>/dev/null)
 }