From 68b0d0c34f1752371b83866b1f4556557023ba64 Mon Sep 17 00:00:00 2001
From: Richard Maw <richard.maw@gmail.com>
Date: Wed, 29 Oct 2014 18:14:15 +0000
Subject: Make build commands use containerised_cmdline

---
 morphlib/stagingarea.py | 45 ++++++++++++++-------------------------------
 1 file changed, 14 insertions(+), 31 deletions(-)

diff --git a/morphlib/stagingarea.py b/morphlib/stagingarea.py
index 25e33b3f..a22753ca 100644
--- a/morphlib/stagingarea.py
+++ b/morphlib/stagingarea.py
@@ -267,16 +267,11 @@ class StagingArea(object):
     def runcmd(self, argv, **kwargs):  # pragma: no cover
         '''Run a command in a chroot in the staging area.'''
         assert 'env' not in kwargs
-        kwargs['env'] = self.env
+        kwargs['env'] = dict(self.env)
         if 'extra_env' in kwargs:
             kwargs['env'].update(kwargs['extra_env'])
             del kwargs['extra_env']
 
-        if 'cwd' in kwargs:
-            cwd = kwargs['cwd']
-            del kwargs['cwd']
-        else:
-            cwd = '/'
         ccache_dir = kwargs.pop('ccache_dir', None)
 
         chroot_dir = self.dirname if self.use_chroot else '/'
@@ -289,40 +284,28 @@ class StagingArea(object):
                              for d in staging_dirs]
         if not self.use_chroot:
             do_not_mount_dirs += [temp_dir]
-
         logging.debug("Not mounting dirs %r" % do_not_mount_dirs)
 
-        real_argv = ['linux-user-chroot', '--chdir', cwd, '--unshare-net']
-        for d in morphlib.fsutils.invert_paths(os.walk(chroot_dir),
-                                               do_not_mount_dirs):
-            if not os.path.islink(d):
-                real_argv += ['--mount-readonly', self.relative(d)]
-
-        if self.use_chroot:
-            proc_target = os.path.join(self.dirname, 'proc')
-            if not os.path.exists(proc_target):
-                os.makedirs(proc_target)
-            real_argv += ['--mount-proc', self.relative(proc_target)]
-
+        mount_proc = self.use_chroot
         if ccache_dir and not self._app.settings['no-ccache']:
             ccache_target = os.path.join(
                     self.dirname, kwargs['env']['CCACHE_DIR'].lstrip('/'))
-            real_argv += ['--mount-bind', ccache_dir,
-                          self.relative(ccache_target)]
-
-        real_argv += [chroot_dir]
-
-        real_argv += argv
+            binds = ((ccache_dir, ccache_target),)
+        else:
+            binds = ()
 
+        cmdline = morphlib.util.containerised_cmdline(
+                    *argv, cwd=kwargs.pop('cwd', '/'),
+                    root=chroot_dir, mounts=self.to_mount,
+                    binds=binds, mount_proc=mount_proc,
+                    writable_paths=do_not_mount_dirs)
         try:
-            if 'logfile' in kwargs and kwargs['logfile'] != None:
-                logfile = kwargs['logfile']
-                del kwargs['logfile']
-
+            if kwargs.get('logfile') != None:
+                logfile = kwargs.pop('logfile')
                 teecmd = ['tee', '-a', logfile]
-                return self._app.runcmd(real_argv, teecmd, **kwargs)
+                return self._app.runcmd(cmdline, teecmd, **kwargs)
             else:
-                return self._app.runcmd(real_argv, **kwargs)
+                return self._app.runcmd(cmdline, **kwargs)
         except cliapp.AppException as e:
             raise cliapp.AppException('In staging area %s: running '
                                       'command \'%s\' failed.' % 
-- 
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