portage.util.movefile._copyxattr(): Support usage of getfattr and

setfattr executables.

diff --git a/pym/portage/util/movefile.py b/pym/portage/util/movefile.py
index fe4150137bcede2eb84f7da15b87ee607b119c55..9507d83a2ffd4a9f9153d54c25beb6e930ccfbc6 100644 (file)
--- a/pym/portage/util/movefile.py
+++ b/pym/portage/util/movefile.py
@@ -7,6 +7,7 @@ import errno
 import os as _os
 import shutil as _shutil
 import stat
+import subprocess
 
 import portage
 from portage import bsd_chflags, _encodings, _os_overrides, _selinux, \
@@ -22,14 +23,32 @@ def _apply_stat(src_stat, dest):
        _os.chmod(dest, stat.S_IMODE(src_stat.st_mode))
 
 if hasattr(_os, "getxattr"):
-       # Python >=3.3
+       # Python >=3.3 and GNU/Linux
        def _copyxattr(src, dest):
                for attr in _os.listxattr(src):
                        _os.setxattr(dest, attr, _os.getxattr(src, attr))
 else:
-       def _copyxattr(src, dest):
-               pass
-               # Maybe call getfattr and setfattr executables.
+       _devnull = open("/dev/null", "w")
+       try:
+               subprocess.call(["getfattr", "--version"], stdout=_devnull)
+               subprocess.call(["setfattr", "--version"], stdout=_devnull)
+               _has_getfattr_and_setfattr = True
+       except OSError:
+               _has_getfattr_and_setfattr = False
+       _devnull.close()
+       if _has_getfattr_and_setfattr:
+               def _copyxattr(src, dest):
+                       getfattr_process = subprocess.Popen(["getfattr", "-d", "--absolute-names", src], stdout=subprocess.PIPE)
+                       getfattr_process.wait()
+                       extended_attributes = getfattr_process.stdout.readlines()
+                       getfattr_process.stdout.close()
+                       if extended_attributes:
+                               extended_attributes[0] = b"# file: " + _unicode_encode(dest) + b"\n"
+                               setfattr_process = subprocess.Popen(["setfattr", "--restore=-"], stdin=subprocess.PIPE)
+                               setfattr_process.communicate(input=b"".join(extended_attributes))
+       else:
+               def _copyxattr(src, dest):
+                       pass
 
 def movefile(src, dest, newmtime=None, sstat=None, mysettings=None,
                hardlink_candidates=None, encoding=_encodings['fs']):