Add --update call, to update existing buildroot.

Useful for things like pungi which continuously reuse a buildroot

2 files changed, 16 insertions, 1 deletions

diff --git a/py/mock.py b/py/mock.py
index c4b9a68..75d4104 100755
--- a/py/mock.py
+++ b/py/mock.py
@@ -83,6 +83,9 @@ def command_parse(config_opts):
     parser.add_option("--install", action="store_const", const="install",
                       dest="mode",
                       help="install packages using yum")
+    parser.add_option("--update", action="store_const", const="update",
+                      dest="mode",
+                      help="update installed packages using yum")
     parser.add_option("--orphanskill", action="store_const", const="orphanskill",
                       dest="mode",
                       help="Kill all processes using specified buildroot.")
@@ -150,7 +153,7 @@ def command_parse(config_opts):
 
     (options, args) = parser.parse_args()
     if len(args) and args[0] in ('chroot', 'shell',
-            'rebuild', 'install', 'installdeps', 'init', 'clean'):
+            'rebuild', 'install', 'update', 'installdeps', 'init', 'clean'):
         options.mode = args[0]
         args = args[1:]
 
@@ -512,6 +515,9 @@ def main(ret):
 
         chroot.tryLockBuildRoot()
         chroot.yumInstall(*args)
+    
+    elif options.mode == 'update':
+        chroot.yumUpdate()
 
     elif options.mode == 'rebuild':
         do_rebuild(config_opts, chroot, args)
diff --git a/py/mock/backend.py b/py/mock/backend.py
index c18026f..8d968bb 100644
--- a/py/mock/backend.py
+++ b/py/mock/backend.py
@@ -304,6 +304,15 @@ class Root(object):
             self._umountall()
 
     decorate(traceLog())
+    def yumUpdate(self):
+        """use yum to update the chroot"""
+        try:
+            self._mountall()
+            self._yum('update', returnOutput=1)
+        finally:
+            self._umountall()
+            
+    decorate(traceLog())
     def installSrpmDeps(self, *srpms):
         """figure out deps from srpm. call yum to install them"""
         arg_string = self.preExistingDeps