From a298ae2cbef1a79df67dff42a15e0b048504035f Mon Sep 17 00:00:00 2001
From: Cem Keylan <cem@ckyln.com>
Date: Sat, 23 May 2020 02:25:28 +0300
Subject: rc.lib: add device_helper, change out/err functions, sort functions
 after loggers alphabetically

---
 rc.lib | 114 ++++++++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 78 insertions(+), 36 deletions(-)

diff --git a/rc.lib b/rc.lib
index 8fa85bf..03ef793 100644
--- a/rc.lib
+++ b/rc.lib
@@ -31,42 +31,59 @@ log() {
 }
 
 
-out() { printf '\033[1;36m-> \033[39m%s\033[m\n' "$@" | log ;}
-err() { printf '\033[1;31m!> \033[39m%s\033[m\n' "$@" | log ;}
-
-shell() {
-    err "Dropping to shell, type 'exit' to continue the boot process."
-    sh -l
+out() {
+    printf '%b%s \033[39m%s\033[m\n' "${3:-"\033[1;36m"}" "${2:-->}" "$1"
+    log "$1"
 }
 
-run_hook() {
-    out "Running '$1' hooks..."
-    for hook in "/etc/init/"*".$1" "/usr/lib/init/hooks/"*".$1"; do
-        [ -f "$hook" ] || continue
-        out "Running '$hook'..."
-        . "$hook"
-    done
-}
+err() { out "$1" "!>" "\033[1;31m" ;}
+
+device_helper() {
+    # We devices based on user preference, and what's available
+    # on the system.
+    #
+    # Get the device daemon to be used, if we don't have a daemon
+    # available on the system, do not continue any further.
+    [ "$devd" ] || {
+        devd=$(command -v udevd) || devd=$(command -v mdev) ||
+        return 0
+    }
 
-random() {
-    seed=/var/random.seed
     case "$1" in
-        load)
-            out "Seeding random..."
-            [ -f "$seed" ] || {
-                out "Generating entropy, this might take a while..."
-                dd count=1 bs=512 if=/dev/random of="$seed" 2>/dev/null
-            }
-            cat "$seed" > /dev/urandom
-            ;;
-        save)
-            mkdir -p "${seed%/*}"
-            out "Saving random seed..."
-            dd count=1 bs=512 if=/dev/urandom of="$seed" 2>/dev/null
-            ;;
+        settle) case "${devd##*/}" in
+                    udevd)
+                        udevd -d
+                        udevadm trigger -c add -t subsystems
+                        udevadm trigger -c add -t devices
+                        udevadm settle
+                        ;;
+                    mdev)
+                        mdev -s
+                        mdev -df & mdev_pid=$!
+                        ;;
+                esac
+                ;;
+        exit) case "${devd##*/}" in
+                  udevd)
+                      udevadm control --exit
+                      ;;
+                  mdev)
+                      [ "$mdev_pid" ] && kill "$mdev_pid"
+                      command -v mdev > /proc/sys/kernel/hotplug
+                      ;;
+              esac
     esac
 }
 
+mnt() {
+    [ -f /proc/mounts ] && while read -r _ mnt _; do
+        case "$mnt" in "$1") return 0; esac
+    done < /proc/mounts
+
+    mnt="$1"; shift
+    mount "$@" "$mnt" 2>&1 | log
+}
+
 parse_cmdline() {
     # This is a primitive way of parsing kernel command line
     # options. Before now, carbs-init ignored these options
@@ -86,16 +103,41 @@ parse_cmdline() {
             ro) RO=1 ;;
             forcefsck) FORCEFSCK="-f" ;;
             fastboot)  FASTBOOT=1 ;;
-            loglevel=?) dmesg_level=${arg##*=} ;;
+            loglevel=?) dmesg_level=${arg#loglevel=} ;;
+            devd=*)     devd=${arg#devd=} ;;
         esac
     done
 }
 
-mnt() {
-    [ -f /proc/mounts ] && while read -r _ mnt _; do
-        case "$mnt" in "$1") return 0; esac
-    done < /proc/mounts
+random() {
+    seed=/var/random.seed
+    case "$1" in
+        load)
+            out "Seeding random..."
+            [ -f "$seed" ] || {
+                out "Generating entropy, this might take a while..."
+                dd count=1 bs=512 if=/dev/random of="$seed" 2>/dev/null
+            }
+            cat "$seed" > /dev/urandom
+            ;;
+        save)
+            mkdir -p "${seed%/*}"
+            out "Saving random seed..."
+            dd count=1 bs=512 if=/dev/urandom of="$seed" 2>/dev/null
+            ;;
+    esac
+}
 
-    mnt="$1"; shift
-    mount "$@" "$mnt" 2>&1 | log
+run_hook() {
+    out "Running '$1' hooks..."
+    for hook in "/etc/init/"*".$1" "/usr/lib/init/hooks/"*".$1"; do
+        [ -f "$hook" ] || continue
+        out "Running '$hook'..."
+        . "$hook"
+    done
+}
+
+shell() {
+    err "Dropping to shell, type 'exit' to continue the boot process."
+    sh -l
 }
-- 
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