[PATCH 32/50] Created pre-mount hook directory

This is for tasks that should run after device discovery, but before
mounting the new rootfs.  Things like cryptoroot and resume from hibernate
should go here.

Hooks are sourced, not executed as separate scripts.

init

@@ -14,9 +14,17 @@ emergency_shell()
 }
 
 getarg() {
+    local o;
     for o in $(< /proc/cmdline); do
 	[[ $o == $1 ]] && { echo $o; break; }
     done
+    return 1
+}
+
+source_all() {
+    local f
+    [[ -d $1 ]] || return
+    for f in "$d"/*; do; . "$f"; done
 }
 
 echo "Starting initrd..."
@@ -67,12 +75,8 @@ esac
 tries=0
 echo "Waiting up to 30 seconds for $root to become available"
 udevadm settle --timeout=30
-[[ -f /cryptroot ]] && {
+source_all /pre-mount
-    echo "Encrypted root detected."
+
-    cryptopts=$(< /cryptroot)
-    /sbin/cryptsetup luksOpen $cryptopts || emergency_shell
-    udevadm settle --timeout=30
-}
 echo "Trying to mount rootfs $root"
 [[ -e $root ]] || emergency_shell
 ln -s "$root" /dev/root    

pre-mount/50cryptroot

@@ -0,0 +1,6 @@
+#!/bin/bash
+[[ -f /cryptroot ]] || return
+echo "Encrypted root detected."
+cryptopts=$(< /cryptroot)
+/sbin/cryptsetup luksOpen $cryptopts || emergency_shell
+udevadm settle --timeout=30

pre-mount/99resume

@@ -0,0 +1,7 @@
+#!/bin/bash
+resume=$(getarg 'resume=*') || return
+resume=${resume#resume=}
+[[ -b $resume ]] || return
+# parsing the output of ls is Bad, but until there is a better way...
+read x x x x maj min x < <(ls -lH "$resume")
+echo "${maj/,/}:$min"> /sys/power/resume