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authorPierre Schmitz <pierre@archlinux.de>2012-10-04 19:57:19 +0200
committerPierre Schmitz <pierre@archlinux.de>2012-10-04 19:57:19 +0200
commitac1ee41e4d2f640ae61795f56610d364d7545458 (patch)
tree3f034307023652e07b3ad7af154f930e247a193e /mkarchroot.in
parentecae65e7fd0a196bb1699bf6dcf22dabd98f9213 (diff)
mkarchroot: use a helper function to simplify bind mounts
Diffstat (limited to 'mkarchroot.in')
-rw-r--r--mkarchroot.in50
1 files changed, 25 insertions, 25 deletions
diff --git a/mkarchroot.in b/mkarchroot.in
index 89087b4..f4cd158 100644
--- a/mkarchroot.in
+++ b/mkarchroot.in
@@ -78,18 +78,32 @@ if echo "${host_mirror}" | grep -q 'file://'; then
fi
# {{{ functions
+bind_mount() {
+ local mode="${2:-rw}"
+ local target="${working_dir}${1}"
+
+ if [[ ! -e "$target" ]]; then
+ if [[ -d "$1" ]]; then
+ install -d "$target"
+ else
+ install -D /dev/null "$target"
+ fi
+ fi
+
+ mount -o bind "$1" "$target"
+ mount -o remount,${mode},bind "$target"
+ mount --make-slave "$target"
+}
+
chroot_mount() {
trap 'trap_chroot_umount' EXIT INT QUIT TERM HUP
if (( ! have_nspawn )); then
- [[ -e "${working_dir}/sys" ]] || mkdir "${working_dir}/sys"
- mount -o bind /sys "${working_dir}/sys"
- mount -o remount,ro,bind "${working_dir}/sys"
+ bind_mount /sys ro
[[ -e "${working_dir}/proc" ]] || mkdir "${working_dir}/proc"
mount -t proc proc -o nosuid,noexec,nodev "${working_dir}/proc"
- mount -o bind /proc/sys "${working_dir}/proc/sys"
- mount -o remount,ro,bind "${working_dir}/proc/sys"
+ bind_mount /proc/sys ro
[[ -e "${working_dir}/dev" ]] || mkdir "${working_dir}/dev"
mount -t tmpfs dev "${working_dir}/dev" -o mode=0755,size=10M,nosuid,strictatime
@@ -112,35 +126,21 @@ chroot_mount() {
[[ -e "${working_dir}/dev/shm" ]] || mkdir "${working_dir}/dev/shm"
mount -t tmpfs shm "${working_dir}/dev/shm" -o nodev,nosuid,size=128M
- [[ -e "${working_dir}/dev/pts" ]] || mkdir "${working_dir}/dev/pts"
- mount -o bind /dev/pts "${working_dir}/dev/pts"
+ bind_mount /dev/pts
[[ -e "${working_dir}/run" ]] || mkdir "${working_dir}/run"
mount -t tmpfs tmpfs "${working_dir}/run" -o mode=0755,nodev,nosuid,strictatime,size=64M
for host_config in resolv.conf timezone localtime; do
- [[ -e "${working_dir}/etc/${host_config}" ]] || touch "${working_dir}/etc/${host_config}"
- mount -o bind /etc/${host_config} "${working_dir}/etc/${host_config}"
- mount -o remount,ro,bind "${working_dir}/etc/${host_config}"
+ bind_mount /etc/$host_config ro
done
fi
- if [[ -n $host_mirror_path ]]; then
- [[ -e "${working_dir}/${host_mirror_path}" ]] || mkdir -p "${working_dir}/${host_mirror_path}"
- mount -o bind "${host_mirror_path}" "${working_dir}/${host_mirror_path}"
- mount -o remount,ro,bind "${working_dir}/${host_mirror_path}"
- fi
+ [[ -n $host_mirror_path ]] && bind_mount "$host_mirror_path" ro
- local cache_dir_first=true
- for cache_dir in ${cache_dirs[@]}; do
- [[ -e $cache_dir ]] || mkdir -p "${cache_dir}"
- [[ -e "${working_dir}/${cache_dir}" ]] || mkdir -p "${working_dir}/${cache_dir}"
- mount -o bind "${cache_dir}" "${working_dir}/${cache_dir}"
- if ! ${cache_dir_first}; then
- mount -o remount,ro,bind "${working_dir}/${cache_dir}"
- else
- cache_dir_first=false
- fi
+ bind_mount "${cache_dirs[0]}"
+ for cache_dir in ${cache_dirs[@]:1}; do
+ bind_mount "$cache_dir" ro
done
}