2 commits - imgcreate/creator.py tools/livecd-iso-to-disk.sh

[Jeremy Katz]

imgcreate/creator.py        |   37 ++++++++++++++++++++-----------------
 tools/livecd-iso-to-disk.sh |    6 +++++-
 2 files changed, 25 insertions(+), 18 deletions(-)

New commits:
commit fd5652933c0a49f8961d17bee5f0526bf1676a14
Author: Jeremy Katz 
Date:   Thu May 29 17:04:41 2008 -0400

Allow isos to be blockdevs or regular files

diff --git a/tools/livecd-iso-to-disk.sh b/tools/livecd-iso-to-disk.sh
index 9676633..69e97e3 100644
--- a/tools/livecd-iso-to-disk.sh
+++ b/tools/livecd-iso-to-disk.sh
@@ -188,7 +188,11 @@ done
 ISO=$(readlink -f "$1")
 USBDEV=$2

-if [ -z "$ISO" -o ! -f "$ISO" ]; then
+if [ -z "$ISO" ]; then
+    usage
+fi
+
+if [ ! -b "$ISO" -a ! -f "$ISO" ]; then
     usage
 fi

commit 6e221ba27ed5a6c5a79ac1fbb7cfc5e11566e080
Author: Jeremy Katz 
Date:   Thu May 29 08:53:25 2008 -0400

Move minimal /dev creation into a method

diff --git a/imgcreate/creator.py b/imgcreate/creator.py
index fc4298b..5d010a1 100644
--- a/imgcreate/creator.py
+++ b/imgcreate/creator.py
@@ -403,6 +403,24 @@ class ImageCreator(object):
         fstab.write(self._get_fstab())
         fstab.close()

+    def __create_minimal_dev(self):
+        """Create a minimal /dev so that we don't corrupt the host /dev"""
+        origumask = os.umask(0000)
+        devices = (('null',   1, 3, 0666),
+                   ('urandom',1, 9, 0666),
+                   ('random', 1, 8, 0666),
+                   ('full',   1, 7, 0666),
+                   ('ptmx',   5, 2, 0666),
+                   ('tty',    5, 0, 0666),
+                   ('zero',   1, 5, 0666))
+        for (node, major, minor, perm) in devices:
+            os.mknod(self._instroot + "/dev/" + node, perm | stat.S_IFCHR, os.makedev(major,minor))
+        os.symlink('/proc/self/fd',   self._instroot + "/dev/fd")
+        os.symlink('/proc/self/fd/0', self._instroot + "/dev/stdin")
+        os.symlink('/proc/self/fd/1', self._instroot + "/dev/stdout")
+        os.symlink('/proc/self/fd/2', self._instroot + "/dev/stderr")
+        os.umask(origumask)
+
     def mount(self, base_on = None, cachedir = None):
         """Setup the target filesystem in preparation for an install.

@@ -444,25 +462,10 @@ class ImageCreator(object):
         if kickstart.selinux_enabled(self.ks):
             self.__bindmounts.append(BindChrootMount("/selinux", self._instroot, None))

-        # Create minimum /dev
-        origumask = os.umask(0000)
-        devices = [('null',   1, 3, 0666),
-                   ('urandom',1, 9, 0666),
-                   ('random', 1, 8, 0666),
-                   ('full',   1, 7, 0666),
-                   ('ptmx',   5, 2, 0666),
-                   ('tty',    5, 0, 0666),
-                   ('zero',   1, 5, 0666)]
-        for (node, major, minor, perm) in devices:
-            os.mknod(self._instroot + "/dev/" + node, perm | stat.S_IFCHR, os.makedev(major,minor))
-        os.symlink('/proc/self/fd',   self._instroot + "/dev/fd")
-        os.symlink('/proc/self/fd/0', self._instroot + "/dev/stdin")
-        os.symlink('/proc/self/fd/1', self._instroot + "/dev/stdout")
-        os.symlink('/proc/self/fd/2', self._instroot + "/dev/stderr")
-        os.umask(origumask)
-
         self._do_bindmounts()

+        self.__create_minimal_dev()
+
         os.symlink("../proc/mounts", self._instroot + "/etc/mtab")

self.__write_fstab()