[PATCH 1/5] fetch2/git: Fix clean to remove clonedir

[Robert Yang <liezhi.yang@windriver.com>]

The localpath is a symlink to clonedir when it is cloned from a mirror, for
example:
$ bitbake systemtap-native -cfetch
$ ls downloads/git2
sourceware.org.git.systemtap.git -> /path/to/downloads/git2/mirror.path.git.sourceware.org.git.systemtap.git
mirror.path.git.sourceware.org.git.systemtap.git

There are both sourceware.org.git.systemtap.git and
mirror.path.git.sourceware.org.git.systemtap.git in DL_DIR/git2, the symlink
sourceware.org.git.systemtap.git is created by try_mirror_url(), but
do_cleanall" only removed the symlink, didn't remove the real dir
mirror.path.git.sourceware.org.git.systemtap.git, this may cause confusions,
for example, I assumed that do_cleanall removed everything, but it didn't, and
it would the re-used next time when do_fetch. This patch fixes the problem.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
---
 bitbake/lib/bb/fetch2/git.py | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/bitbake/lib/bb/fetch2/git.py b/bitbake/lib/bb/fetch2/git.py
index 1a8ebe3..cf8bee7 100644
--- a/bitbake/lib/bb/fetch2/git.py
+++ b/bitbake/lib/bb/fetch2/git.py
@@ -522,9 +522,17 @@ class Git(FetchMethod):
     def clean(self, ud, d):
         """ clean the git directory """
 
-        bb.utils.remove(ud.localpath, True)
-        bb.utils.remove(ud.fullmirror)
-        bb.utils.remove(ud.fullmirror + ".done")
+        to_remove = [ud.localpath, ud.fullmirror, ud.fullmirror + ".done"]
+        # The localpath is a symlink to clonedir when it is cloned from a
+        # mirror, so remove both of them.
+        if os.path.islink(ud.localpath):
+            clonedir = os.path.realpath(ud.localpath)
+            to_remove.append(clonedir)
+
+        for r in to_remove:
+            if os.path.exists(r):
+                bb.note('Removing %s' % r)
+                bb.utils.remove(r, True)
 
     def supports_srcrev(self):
         return True
-- 
2.7.4