mrrl-containers

commit f6716a398908f0c2965315a59a5fa11ea796dcf6
parent c0063cc908efef690a39d7904c4c5ed00ee2afaa
Author: Jan Pobrislo <ccx@te2000.cz>
Date:   Sun,  5 Apr 2020 01:24:05 +0200

User container generation
Diffstat:
M
zsh-functions/confz_containers_init
 | 
44
++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 44 insertions(+), 0 deletions(-)
diff --git a/zsh-functions/confz_containers_init b/zsh-functions/confz_containers_init
@@ -82,3 +82,47 @@ confz_container_alpine_package_check() {
 	)
 	grep -q '^'$vars[package]'$' $vars[container_root]/etc/apk/world
 }
+
+containers_fstab_gen(){
+	printf '%\n' \
+	"overlay $2/union overlay nosuid,nodev,lowerdir=$1,upperdir=$2/changes,workdir=$2/work 0 0" \
+	"run_tmpfs	$2/union/run	tmpfs	rw,nosuid,nodev,mode=755,uid=1000	0 0"
+}
+
+confz_container_user_setup_check() {
+	checkvars container_name containers_dir user
+	defvar container_root $vars[containers_dir]/$vars[container_name]
+	defvar nameserver 127.0.0.1
+
+	local U=$vars[containers_dir]/user/$vars[user]
+	local D=$U/$vars[container_name]
+	local uid=$(awk </etc/passwd -F: -v USER=ccx '$1 == USER {print $3}')
+
+	[[ "$uid" =~ '[0-9]+' ]] || die "Could not get uid for ${(qqq)uid}"
+
+	require fs_d flags= filename=$vars[containers_dir]/user
+	require fs_d flags= filename=$U
+	require fs_d flags= filename=$D
+	require fs_d flags= filename=$D/changes
+	require fs_d flags= filename=$D/union
+	require fs_d flags= filename=$D/work
+	require fs_c flags= filename=$D/fstab \
+		content_call="containers_fstab_gen ${(qqq)vars[container_root]} ${(qqq)U}"
+	require fs_d flags= filename=$D/changes/dev
+	require fs_d flags= filename=$D/changes/dev/shm
+	require fs_d flags= filename=$D/changes/dev/pts
+	require fs_d flags= filename=$D/changes/etc
+	# TODO: $U/changes/etc/passwd
+	require fs_c flags= filename=$D/changes/etc/resolv.conf \
+		content_call="printf '%\n' $vars[nameserver]"
+	require fs_d flags= filename=$D/changes/home
+	require fs_d flags= filename=$D/changes/home/$vars[user]
+	require fs_o owner=$uid filename=$U/changes/home/$vars[user]
+
+	require fs_d flags= filename=$vars[containers_dir]/home
+	require fs_d flags= filename=$vars[containers_dir]/home/$vars[user]
+	require fs_l flags= \
+		filename=$vars[containers_dir]/home/$vars[user]/$vars[container_name] \
+		destination=../../user/$vars[user]/$vars[container_name]/union/home/$vars[user]
+
+}