Use 'devices' in morphology to create device nodes

Allowing arbitrary code to create device nodes is a bad idea, so
it is preferred to build under linux-user-chroot.

Since we need to create device nodes, a "devices" field is added to
the chunk morphology, which describes which devices nodes are to be
created, and how.

This commit will not work without the corresponding changes to morph.

Reviewed-by: Lars Wirzenius <lars.wirzenius@codethink.co.uk>

2 files changed, 47 insertions, 38 deletions

diff --git a/create-dev-nodes b/create-dev-nodes
deleted file mode 100755
index f84c98e..0000000
--- a/create-dev-nodes
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/bin/sh
-#
-# Create FHS directories below a target directory.
-#
-# Copyright (C) 2011  Codethink Limited
-# 
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; version 2 of the License.
-# 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-set -e
-
-if [ "$#" != 1 ]
-then
-    echo "Error: must give target root directory as argument." 1>&2
-    exit 1
-fi
-
-DESTDIR=$1
-while read path mode type major minor; do
-    mknod -m "$mode" "$DESTDIR/$path" "$type" "$major" "$minor"
-done <<EOF
-/dev/console 600 c 5 1
-/dev/full    666 c 1 7
-/dev/null    666 c 1 3
-/dev/urandom 666 c 1 9
-/dev/zero    666 c 1 5
-EOF
diff --git a/fhs-dirs.morph b/fhs-dirs.morph
index fcf3bf9..6a92b88 100644
--- a/fhs-dirs.morph
+++ b/fhs-dirs.morph
@@ -4,7 +4,6 @@
     "decription": "create the FHS 2.3 directory hierarchy and the usual files",
     "install-commands": [
         "sh ./create-fhs-dirs \"$DESTDIR\"",
-        "sh ./create-dev-nodes \"$DESTDIR\"",
         "install -m 644 passwd \"$DESTDIR/etc/passwd\"",
         "install -m 600 shadow \"$DESTDIR/etc/shadow\"",
         "install -m 644 interfaces \"$DESTDIR/etc/network/interfaces\"",
@@ -13,5 +12,52 @@
         "install -m 644 issue \"$DESTDIR/etc/issue\"",
         "install -m 644 services \"$DESTDIR/etc/services\"",
         "echo baserock > \"$DESTDIR\"/etc/hostname"
+    ],
+    "devices": [
+        {
+            "filename": "/dev/console",
+            "uid": 0,
+            "gid": 0,
+            "type": "c",
+            "major": 5,
+            "minor": 1,
+            "permissions": "0600"
+        },
+        {
+            "filename": "/dev/full",
+            "uid": 0,
+            "gid": 0,
+            "type": "c",
+            "major": 1,
+            "minor": 7,
+            "permissions": "0666"
+        },
+        {
+            "filename": "/dev/null",
+            "uid": 0,
+            "gid": 0,
+            "type": "c",
+            "major": 1,
+            "minor": 3,
+            "permissions": "0666"
+        },
+        {
+            "filename": "/dev/urandom",
+            "uid": 0,
+            "gid": 0,
+            "type": "c",
+            "major": 1,
+            "minor": 9,
+            "permissions": "0666"
+        },
+        {
+            "filename": "/dev/zero",
+            "uid": 0,
+            "gid": 0,
+            "type": "c",
+            "major": 1,
+            "minor": 5,
+            "permissions": "0666"
+        }
     ]
 }