python-smartpm: truncate the filename to meet NAME_MAX

There is a "File name too long" error when len(TMPDIR) = 410, this is
because the function getLocalPath() converts the filepath into the
filename, so there would be the error when len(filename)
> NAME_MAX, truncate the filename to meet NAME_MAX will fix the problem.

[YOCTO #5201]

(From OE-Core rev: 9f0427edee6bf62d3fe7cdceb07f59a5776c8c4f)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python-smartpm/smart-filename-NAME_MAX.patch

@@ -0,0 +1,35 @@
+From a17998b6be3319ae476a64f366737bc267a53a8a Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Mon, 16 Sep 2013 05:54:13 -0400
+Subject: [PATCH] fetcher.py: truncate the filename to meet NAME_MAX
+
+The function getLocalPath() converts the filepath into the filename,
+there would be a "File name too long" error when len(filename) >
+NAME_MAX, truncate it to meet NAME_MAX will fix the problem.
+
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+---
+ smart/fetcher.py |    8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/smart/fetcher.py b/smart/fetcher.py
+--- a/smart/fetcher.py
++++ b/smart/fetcher.py
+@@ -139,6 +139,14 @@ class Fetcher(object):
+             filename = os.path.basename(path)
+         if self._localpathprefix:
+             filename = self._localpathprefix+filename
++        # pathconf requires the path existed
++        if not os.path.exists(self._localdir):
++            os.makedirs(self._localdir)
++        name_max = os.pathconf(self._localdir, 'PC_NAME_MAX')
++        # The length of the filename should be less than NAME_MAX
++        if len(filename) > name_max:
++            iface.debug(_("Truncate %s to %s") % (filename, filename[-name_max:]))
++            filename = filename[-name_max:]
+         return os.path.join(self._localdir, filename)
+ 
+     def setForceCopy(self, value):
+-- 
+1.7.10.4
+

meta/recipes-devtools/python/python-smartpm_1.4.1.bb

@@ -31,6 +31,7 @@ SRC_URI = "\
           file://smart-flag-exclude-packages.patch \
           file://smart-config-ignore-all-recommends.patch \
           file://smart-attempt.patch \
+          file://smart-filename-NAME_MAX.patch \
           "
 
 SRC_URI[md5sum] = "573ef32ba177a6b3c4bf7ef04873fcb6"