1 files changed, 56 insertions, 9 deletions
diff --git a/initcpio-install-udev b/initcpio-install-udev
index 31d9827129e7..713fbf4cc7ea 100644
--- a/initcpio-install-udev
+++ b/initcpio-install-udev
@@ -1,18 +1,65 @@
 #!/bin/bash
 
+# This is in 'udev' and 'systemd' hook... Let's hope we have
+# it in mkinitcpio soon.
+# https://github.com/archlinux/mkinitcpio/pull/54
+add_udev_rule() {
+    # Add an udev rules file to the initcpio image. Dependencies on binaries
+    # will be discovered and added.
+    #   $1: path to rules file (or name of rules file)
+
+    local rules="$1" rule= key= value= binary=
+
+    if [[ ${rules:0:1} != '/' ]]; then
+        rules=$(PATH=/usr/lib/udev/rules.d:/lib/udev/rules.d type -P "$1")
+    fi
+    if [[ -z $rules ]]; then
+        # complain about not found rules
+        return 1
+    fi
+
+    add_file "$rules" /usr/lib/udev/rules.d/"${rules##*/}"
+
+    while IFS=, read -ra rule; do
+        # skip empty lines, comments
+        [[ -z $rule || $rule = @(+([[:space:]])|#*) ]] && continue
+
+        for pair in "${rule[@]}"; do
+            IFS=' =' read -r key value <<< "$pair"
+            case $key in
+                RUN@({program}|+)|IMPORT{program}|ENV{REMOVE_CMD})
+                    # strip quotes
+                    binary=${value//[\"\']/}
+                    # just take the first word as the binary name
+                    binary=${binary%% *}
+                    [[ ${binary:0:1} == '$' ]] && continue
+                    if [[ ${binary:0:1} != '/' ]]; then
+                        binary=$(PATH=/usr/lib/udev:/lib/udev type -P "$binary")
+                    fi
+                    add_binary "$binary"
+                    ;;
+            esac
+        done
+    done <"$rules"
+}
+
 build() {
     local rules tool
 
-    add_binary /usr/lib/systemd/systemd-udevd
-    add_binary /usr/bin/udevadm
-    add_binary /usr/bin/systemd-tmpfiles
+    map add_binary \
+        '/usr/lib/systemd/systemd-udevd' \
+        '/usr/bin/udevadm' \
+        '/usr/bin/systemd-tmpfiles'
 
-    for rules in 50-udev-default.rules 60-persistent-storage.rules 64-btrfs.rules 80-drivers.rules; do
-        add_file "/usr/lib/udev/rules.d/$rules"
-    done
-    for tool in ata_id scsi_id; do
-        add_file "/usr/lib/udev/$tool"
-    done
+    map add_udev_rule \
+        '50-udev-default.rules' \
+        '60-persistent-storage.rules' \
+        '64-btrfs.rules' \
+        '80-drivers.rules'
+    
+    map add_file \
+        '/usr/lib/udev/ata_id' \
+        '/usr/lib/udev/scsi_id'
 
     add_runscript
 }