Log errors when we can't chown files and continue (#376741).

This happens for any files that are owned by nfsnobody, as that UID maps to
-1 which will cause an overflow.  So far this has only occurred on
/var/spool/mail/nfsnobody.  Seems like fake users shouldn't have mail spools
created for them.

1 files changed, 5 insertions, 1 deletions

diff --git a/livecd.py b/livecd.py
index e42b0717c..d63814504 100644
--- a/livecd.py
+++ b/livecd.py
@@ -62,7 +62,11 @@ def copytree(src, dst, symlinks=False, preserveOwner=False,
             else:
                 shutil.copyfile(srcname, dstname)
                 if preserveOwner:
-                    os.chown(dstname, os.stat(srcname)[stat.ST_UID], os.stat(srcname)[stat.ST_GID])
+                    try:
+                        os.chown(dstname, os.stat(srcname)[stat.ST_UID], os.stat(srcname)[stat.ST_GID])
+                    except OverflowError:
+                        log.error("Could not set owner and group on file %s" % dstname)
+
                 if preserveSelinux:
                     selinux.lsetfilecon(dstname, selinux.lgetfilecon(srcname)[1])
                 shutil.copystat(srcname, dstname)