python: Remove all uses of find_library. Fixes #1450593

`find_library()` doesn't consider LD_LIBRARY_PATH on Python < 3.6.

Change-Id: Iee26085cb5d14061001f19f032c2664d69a378a8
BUG: 1450593
Signed-off-by: Niklas Hambüchen <mail@nh2.me>

7 files changed, 9 insertions, 20 deletions

diff --git a/api/examples/getvolfile.py b/api/examples/getvolfile.py
index 0c95213f0b..32c2268b31 100755
--- a/api/examples/getvolfile.py
+++ b/api/examples/getvolfile.py
@@ -3,7 +3,7 @@
 import ctypes
 import ctypes.util
 
-api = ctypes.CDLL(ctypes.util.find_library("gfapi"))
+api = ctypes.CDLL("libgfapi.so")
 api.glfs_get_volfile.argtypes = [ctypes.c_void_p,
                                  ctypes.c_void_p,
                                  ctypes.c_ulong]
diff --git a/geo-replication/syncdaemon/libcxattr.py b/geo-replication/syncdaemon/libcxattr.py
index 3671e102c7..f576648b7a 100644
--- a/geo-replication/syncdaemon/libcxattr.py
+++ b/geo-replication/syncdaemon/libcxattr.py
@@ -10,7 +10,6 @@
 
 import os
 from ctypes import CDLL, create_string_buffer, get_errno
-from ctypes.util import find_library
 
 
 class Xattr(object):
@@ -25,7 +24,7 @@ class Xattr(object):
          sizes we expect
     """
 
-    libc = CDLL(find_library("c"), use_errno=True)
+    libc = CDLL("libc.so.6", use_errno=True)
 
     @classmethod
     def geterrno(cls):
diff --git a/geo-replication/syncdaemon/libgfchangelog.py b/geo-replication/syncdaemon/libgfchangelog.py
index 334f5e9eaf..da12438d06 100644
--- a/geo-replication/syncdaemon/libgfchangelog.py
+++ b/geo-replication/syncdaemon/libgfchangelog.py
@@ -11,12 +11,11 @@
 import os
 from ctypes import CDLL, RTLD_GLOBAL, create_string_buffer, \
     get_errno, byref, c_ulong
-from ctypes.util import find_library
 from syncdutils import ChangelogException, ChangelogHistoryNotAvailable
 
 
 class Changes(object):
-    libgfc = CDLL(find_library("gfchangelog"), mode=RTLD_GLOBAL,
+    libgfc = CDLL("libgfchangelog.so", mode=RTLD_GLOBAL,
                   use_errno=True)
 
     @classmethod
diff --git a/tests/features/ipctest.py b/tests/features/ipctest.py
index 5aff319b8d..9339248614 100755
--- a/tests/features/ipctest.py
+++ b/tests/features/ipctest.py
@@ -1,14 +1,8 @@
 #!/usr/bin/python
 
 import ctypes
-import ctypes.util
-
-# find_library does not lookup LD_LIBRARY_PATH and may miss the
-# function. In that case, retry with less portable but explicit name.
-libgfapi = ctypes.util.find_library("gfapi")
-if libgfapi == None:
-	libgfapi = "libgfapi.so"
-api = ctypes.CDLL(libgfapi,mode=ctypes.RTLD_GLOBAL)
+
+api = ctypes.CDLL("libgfapi.so",mode=ctypes.RTLD_GLOBAL)
 
 api.glfs_ipc.argtypes = [ ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p, ctypes.c_void_p ]
 api.glfs_ipc.restype = ctypes.c_int
diff --git a/tests/utils/libcxattr.py b/tests/utils/libcxattr.py
index 149db72e6e..4e6e6c46df 100644
--- a/tests/utils/libcxattr.py
+++ b/tests/utils/libcxattr.py
@@ -11,7 +11,6 @@
 import os
 import sys
 from ctypes import CDLL, c_int, create_string_buffer
-from ctypes.util import find_library
 
 
 class Xattr(object):
@@ -28,9 +27,9 @@ class Xattr(object):
 
     if sys.hexversion >= 0x02060000:
         from ctypes import DEFAULT_MODE
-        libc = CDLL(find_library("libc"), DEFAULT_MODE, None, True)
+        libc = CDLL("libc.so.6", DEFAULT_MODE, None, True)
     else:
-        libc = CDLL(find_library("libc"))
+        libc = CDLL("libc.so.6")
 
     @classmethod
     def geterrno(cls):
diff --git a/tools/glusterfind/src/libgfchangelog.py b/tools/glusterfind/src/libgfchangelog.py
index b7d8efcb4e..afb3387db2 100644
--- a/tools/glusterfind/src/libgfchangelog.py
+++ b/tools/glusterfind/src/libgfchangelog.py
@@ -11,14 +11,13 @@
 import os
 from ctypes import CDLL, get_errno, create_string_buffer, c_ulong, byref
 from ctypes import RTLD_GLOBAL
-from ctypes.util import find_library
 
 
 class ChangelogException(OSError):
     pass
 
 
-libgfc = CDLL(find_library("gfchangelog"), use_errno=True, mode=RTLD_GLOBAL)
+libgfc = CDLL("libgfchangelog.so", use_errno=True, mode=RTLD_GLOBAL)
 
 
 def raise_oserr(prefix=None):
diff --git a/xlators/features/changelog/lib/examples/python/libgfchangelog.py b/xlators/features/changelog/lib/examples/python/libgfchangelog.py
index 10e73c02b3..2cdbf1152b 100644
--- a/xlators/features/changelog/lib/examples/python/libgfchangelog.py
+++ b/xlators/features/changelog/lib/examples/python/libgfchangelog.py
@@ -1,9 +1,8 @@
 import os
 from ctypes import *
-from ctypes.util import find_library
 
 class Changes(object):
-    libgfc = CDLL(find_library("gfchangelog"), mode=RTLD_GLOBAL, use_errno=True)
+    libgfc = CDLL("libgfchangelog.so", mode=RTLD_GLOBAL, use_errno=True)
 
     @classmethod
     def geterrno(cls):