4 files changed, 111 insertions, 0 deletions
diff --git a/libalpm/hooks/60-mkinitcpio-remove.hook b/libalpm/hooks/60-mkinitcpio-remove.hook
new file mode 100644
index 0000000..ab71ed6
--- /dev/null
+++ b/libalpm/hooks/60-mkinitcpio-remove.hook
@@ -0,0 +1,16 @@
+[Trigger]
+Type = File
+Operation = Remove
+Target = usr/lib/modules/*/vmlinuz
+
+[Trigger]
+Type = Package
+Operation = Remove
+Target = mkinitcpio
+Target = mkinitcpio-git
+
+[Action]
+Description = Removing linux initcpios...
+When = PreTransaction
+Exec = /usr/share/libalpm/scripts/mkinitcpio-remove
+NeedsTargets
diff --git a/libalpm/hooks/90-mkinitcpio-install.hook b/libalpm/hooks/90-mkinitcpio-install.hook
new file mode 100644
index 0000000..48e6a1e
--- /dev/null
+++ b/libalpm/hooks/90-mkinitcpio-install.hook
@@ -0,0 +1,12 @@
+[Trigger]
+Type = File
+Operation = Install
+Operation = Upgrade
+Target = usr/lib/modules/*/vmlinuz
+Target = usr/lib/initcpio/*
+
+[Action]
+Description = Updating linux initcpios...
+When = PostTransaction
+Exec = /usr/share/libalpm/scripts/mkinitcpio-install
+NeedsTargets
diff --git a/libalpm/scripts/mkinitcpio-install b/libalpm/scripts/mkinitcpio-install
new file mode 100644
index 0000000..d2e5041
--- /dev/null
+++ b/libalpm/scripts/mkinitcpio-install
@@ -0,0 +1,44 @@
+#!/bin/bash -e
+
+args=()
+all=0
+
+while read -r line; do
+    if [[ $line != */vmlinuz ]]; then
+        # triggers when it's a change to usr/lib/initcpio/*
+        all=1
+        continue
+    fi
+
+    if ! read -r pkgbase > /dev/null 2>&1 < "${line%/vmlinuz}/pkgbase"; then
+        # if the kernel has no pkgbase, we skip it
+        continue
+    fi
+
+    preset="/etc/mkinitcpio.d/${pkgbase}.preset"
+    if [[ ! -e $preset ]]; then
+        if [[ -e $preset.pacsave ]]; then
+            # move the pacsave to the template
+            mv "${preset}.pacsave" "$preset"
+        else
+            # create the preset from the template
+            sed "s|%PKGBASE%|${pkgbase}|g" /usr/share/mkinitcpio/hook.preset \
+                | install -Dm644 /dev/stdin "$preset"
+        fi
+    fi
+
+    # always install the kernel
+    install -Dm644 "${line}" "/boot/vmlinuz-${pkgbase}"
+
+    # compound args for each kernel
+    args+=(-p "${pkgbase}")
+done
+
+if (( all )) && compgen -G /etc/mkinitcpio.d/"*.preset" > /dev/null; then
+    # change to use all presets
+    args=(-P)
+fi
+
+if (( ${#args[@]} )); then
+    mkinitcpio "${args[@]}"
+fi
diff --git a/libalpm/scripts/mkinitcpio-remove b/libalpm/scripts/mkinitcpio-remove
new file mode 100644
index 0000000..86838e4
--- /dev/null
+++ b/libalpm/scripts/mkinitcpio-remove
@@ -0,0 +1,39 @@
+#!/bin/bash -e
+
+package=0
+
+while read -r line; do
+    if [[ $line != */vmlinuz ]]; then
+        # triggers when it's a change to usr/lib/initcpio/*
+        package=1
+        continue
+    fi
+
+    if ! read -r pkgbase > /dev/null 2>&1 < "${line%/vmlinuz}/pkgbase"; then
+        # if the kernel has no pkgbase, we skip it
+        continue
+    fi
+
+    # remove the actual kernel and images for the package being removed
+    kernel="/boot/vmlinuz-${pkgbase}"
+    preset="/etc/mkinitcpio.d/${pkgbase}.preset"
+    initramfs="/boot/initramfs-${pkgbase}.img"
+    fallback_initramfs="/boot/initramfs-${pkgbase}-fallback.img"
+    if [[ -e $kernel ]]; then
+        # remove the installed kernel
+        rm $kernel
+    fi
+    if [[ -e $preset ]]; then
+        # remove the preset
+        rm $preset
+    fi
+    if [[ -e $initramfs && -e $fallback_initramfs ]]; then
+        # remove the images
+        rm $initramfs $fallback_initramfs
+    fi
+done
+
+if (( package )) && compgen -G /etc/mkinitcpio.d/"*.preset" > /dev/null; then
+    # remove all presets
+    rm /etc/mkinitcpio.d/*.preset
+fi