[OE-core] [PATCH 1/1 V2] oe/path.py: fix for "Argument list too long"

[Robert Yang]

Fixed when len(TMPDIR) = 410:
$ bitbake core-image-sato-sdk
[snip]
Subprocess output:
/bin/sh: /bin/cp: Argument list too long

ERROR: core-image-sato-sdk-1.0-r0 do_rootfs: Function failed: do_rootfs
[snip]

This is because "copyhardlinktree(src, dst)" does "cp -afl src/* dst",
while src/* is expanded to "src/file1 src/file2, src/file3..." which
causes the "Argument list too long", use ./* as src and change cwd in
subprocess.check_output() to fix the problem.

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/lib/oe/path.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/meta/lib/oe/path.py b/meta/lib/oe/path.py
index f73fd4a..81e7632 100644
--- a/meta/lib/oe/path.py
+++ b/meta/lib/oe/path.py
@@ -82,12 +82,14 @@ def copyhardlinktree(src, dst):
         source = ''
         if os.path.isdir(src):
             if len(glob.glob('%s/.??*' % src)) > 0:
-                source = '%s/.??* ' % src
-            source = source + '%s/*' % src
+                source = './.??* '
+            source += './*'
+            s_dir = src
         else:
             source = src
-        cmd = 'cp -afl --preserve=xattr %s %s' % (source, dst)
-        subprocess.check_output(cmd, shell=True, stderr=subprocess.STDOUT)
+            s_dir = os.getcwd()
+        cmd = 'cp -afl --preserve=xattr %s %s' % (source, os.path.realpath(dst))
+        subprocess.check_output(cmd, shell=True, cwd=s_dir, stderr=subprocess.STDOUT)
     else:
         copytree(src, dst)
 
-- 
2.10.2