From 82e6bfcd7ae9a0dc2e9ef3c48d5477aa615bef9e Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@parabola.nu>
Date: Wed, 5 Apr 2017 15:36:00 -0400
Subject: mkarchroot, arch-nspawn: Add an `-f` flag to add files to copy.

This allows us to copy in files like `qemu-arm-static`, which is
necessary for running an ARM chroot on an x86 box.
---
 arch-nspawn.in | 12 +++++++++++-
 mkarchroot.in  | 11 ++++++++++-
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/arch-nspawn.in b/arch-nspawn.in
index 7481d82..dceb3ed 100644
--- a/arch-nspawn.in
+++ b/arch-nspawn.in
@@ -15,6 +15,8 @@ m4_include(lib/archroot.sh)
 
 working_dir=''
 
+files=()
+
 usage() {
 	echo "Usage: ${0##*/} [options] working-dir [systemd-nspawn arguments]"
 	echo "A wrapper around systemd-nspawn. Provides support for pacman."
@@ -23,15 +25,17 @@ usage() {
 	echo '    -C <file>     Location of a pacman config file'
 	echo '    -M <file>     Location of a makepkg config file'
 	echo '    -c <dir>      Set pacman cache'
+	echo '    -f <file>     Copy file from the host to the chroot'
 	echo '    -h            This message'
 	exit 1
 }
 
-while getopts 'hC:M:c:' arg; do
+while getopts 'hC:M:c:f:' arg; do
 	case "$arg" in
 		C) pac_conf="$OPTARG" ;;
 		M) makepkg_conf="$OPTARG" ;;
 		c) cache_dir="$OPTARG" ;;
+		f) files+=("$OPTARG") ;;
 		h|?) usage ;;
 		*) error "invalid argument '%s'" "$arg"; usage ;;
 	esac
@@ -77,6 +81,12 @@ copy_hostconf () {
 	[[ -n $pac_conf ]] && cp $pac_conf "$working_dir/etc/pacman.conf"
 	[[ -n $makepkg_conf ]] && cp $makepkg_conf "$working_dir/etc/makepkg.conf"
 
+	local file
+	for file in "${files[@]}"; do
+		mkdir -p "$(dirname "$working_dir$file")"
+		cp -T "$file" "$working_dir$file"
+	done
+
 	sed -r "s|^#?\\s*CacheDir.+|CacheDir = $(echo -n ${cache_dirs[@]})|g" -i "$working_dir/etc/pacman.conf"
 }
 # }}}
diff --git a/mkarchroot.in b/mkarchroot.in
index 1265335..4f35c1a 100644
--- a/mkarchroot.in
+++ b/mkarchroot.in
@@ -15,21 +15,25 @@ m4_include(lib/archroot.sh)
 
 working_dir=''
 
+files=()
+
 usage() {
 	echo "Usage: ${0##*/} [options] working-dir package-list..."
 	echo ' options:'
 	echo '    -C <file>     Location of a pacman config file'
 	echo '    -M <file>     Location of a makepkg config file'
 	echo '    -c <dir>      Set pacman cache'
+	echo '    -f <file>     Copy file from the host to the chroot'
 	echo '    -h            This message'
 	exit 1
 }
 
-while getopts 'hC:M:c:' arg; do
+while getopts 'hC:M:c:f:' arg; do
 	case "$arg" in
 		C) pac_conf="$OPTARG" ;;
 		M) makepkg_conf="$OPTARG" ;;
 		c) cache_dir="$OPTARG" ;;
+		f) files+=("$OPTARG") ;;
 		h|?) usage ;;
 		*) error "invalid argument '%s'" "$arg"; usage ;;
 	esac
@@ -67,6 +71,11 @@ if is_btrfs "$working_dir"; then
 	chmod 0755 "$working_dir"
 fi
 
+for file in "${files[@]}"; do
+	mkdir -p "$(dirname "$working_dir$file")"
+	cp "$file" "$working_dir$file"
+done
+
 pacstrap -GMcd ${pac_conf:+-C "$pac_conf"} "$working_dir" \
   "${cache_dirs[@]/#/--cachedir=}" "$@" || die 'Failed to install all packages'
 
-- 
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