From 06d994ca36e1c489925daeadd20c58357c2a22fa Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Tue, 12 Jun 2018 19:01:13 -0400
Subject: new command "add" to add packages

---
 debootstrap.sh | 80 +++++++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 68 insertions(+), 12 deletions(-)

(limited to 'debootstrap.sh')

diff --git a/debootstrap.sh b/debootstrap.sh
index 1b88a86..736d608 100755
--- a/debootstrap.sh
+++ b/debootstrap.sh
@@ -1,5 +1,9 @@
 #!/bin/sh
 imgdir=./debootstrap
+default_sh_command=bash
+default_chroot_command=/bin/bash
+default_image_size=1G # truncate(1) format
+
 warn() { printf 'Warning: %s\n' "$*" >&2; }
 die() { printf 'Error: %s\n' "$*" >&2; exit 1; }
 [ -d "$imgdir" ] || die "directory does not exist: $imgdir"
@@ -12,6 +16,7 @@ Usage:
   $0 new <suite> <new-name>
   $0 clone <suite> <source-name> <new-name>
   $0 chroot <suite> <name>
+  $0 add <suite> <name> <package> [packages...]
   $0 list
   $0 show unpackaged <suite> <name>
   $0 show unpackaged-du <suite> <name> ["filtered"]
@@ -134,21 +139,17 @@ show_unpackaged_du()
     fi
 }
 
-sh_image()
+run_command_with_mountpoint()
 {
-    suite=$1
-    name=$2
-    shift 2
-    if [ $# = 0 ]; then
-        set -- /bin/bash
-    fi
+    local suite="$1" name="$2" command="$3"
+    shift 3
     [ "$suite" -a "$name" ] || usage
     imagename=$(suite_name_to_imagename "$suite" "$name")
     [ -e "$imagename" ] || die "no such file: $imagename"
     [ -d "$imagename".mnt ] || mkdir "$imagename".mnt || die "mkdir"
     mountpoint -q "$imagename".mnt || mount "$imagename" "$imagename".mnt || die "mount"
 
-    (cd "$imagename".mnt; "$@")
+    "$command" "$imagename".mnt "$@"
 
     r=$?
     umount "$imagename".mnt
@@ -156,7 +157,58 @@ sh_image()
     return $r
 }
 
-default_chroot_command=/bin/bash
+rotate_args_left()
+{
+    local fst="$1" snd="$2"
+    shift 2
+    "$snd" "$@" "$fst"
+}
+
+add()
+{
+    export SKIP_UPDATE=y
+    suite=$1
+    name=$2
+    shift 2
+    running_suite=$(lsb_release -cs) || die 'lsb_release failed'
+    if [ "$suite" = "$running_suite" -a -x ./src/selfstrap ]; then
+        run_mp "$suite" "$name" ./src/selfstrap "$@" -t
+    else
+        exit 1
+    fi
+}
+
+run_mp()
+{
+    suite=$1
+    name=$2
+    shift 2
+    if [ $# = 0 ]; then
+        cmd=echo
+    else
+        cmd=$1
+        shift
+    fi
+    run_command_with_mountpoint "$suite" "$name" rotate_args_left "$cmd" "$@"
+}
+
+
+
+cd_then_run()
+{
+    (cd "$1"; shift; "$@")
+}
+
+sh_image()
+{
+    suite=$1
+    name=$2
+    shift 2
+    if [ $# = 0 ]; then
+        set -- $default_sh_command
+    fi
+    run_command_with_mountpoint "$suite" "$name" cd_then_run "$@"
+}
 
 chroot_image()
 {
@@ -253,7 +305,7 @@ init()
     arch=$(dpkg-architecture -q DEB_HOST_ARCH) || die "command 'dpkg-architecture' failed"
     running_suite=$(lsb_release -cs) || die 'lsb_release failed'
 
-    size=1G # truncate(1) format
+    size=$default_image_size
 
     i_am_root || die 'you are not root'
 
@@ -271,7 +323,11 @@ init()
     trap 'umount "$target.mnt"' EXIT
 
     if [ "$suite" = "$running_suite" -a -x ./src/selfstrap ]; then
-        ./src/selfstrap -t "$target.mnt"
+        # TODO:
+        # 1. Use a --chroot arg that will set up cgroups
+        # 2. Use --packages arg to implement variant
+        # 3. Allow selfstrap to run on already-initialized image
+        ./src/selfstrap -t "$target.mnt" || die "selfstrap failed"
     else
         debootstrap_efficiently "$arch" "$variant" "$suite" \
                                 "$target".mnt "${target%.btrfs}".debs.txt || die "debootstrap failed"
@@ -307,7 +363,7 @@ show()
 }
 
 case "$1" in
-    init|new|clone|list|show) cmd=$1; shift; $cmd "$@" ;;
+    init|new|clone|list|show|add|run_mp) cmd=$1; shift; $cmd "$@" ;;
     chroot|sh|rm) cmd=${1}_image; shift; $cmd "$@" ;;
     *) usage ;;
 esac
-- 
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