Backport fix for temporary file handling bug in os._execvpe() from

Python 2.2.2.

Not approved by:	tg (short timeout)

1 files changed, 76 insertions, 0 deletions

diff --git a/lang/python20/files/patch-Lib:os.py b/lang/python20/files/patch-Lib:os.py
new file mode 100644
index 000000000000..b11bae7fccab
--- /dev/null
+++ b/lang/python20/files/patch-Lib:os.py
@@ -0,0 +1,76 @@
+*** Lib/os.py.orig	Thu Sep 28 14:10:56 2000
+--- Lib/os.py	Mon Nov 11 15:18:05 2002
+***************
+*** 234,241 ****
+      args may be a list or tuple of strings. """    
+      _execvpe(file, args, env)
+  
+- _notfound = None
+  def _execvpe(file, args, env=None):
+      if env is not None:
+          func = execve
+          argrest = (args, env)
+--- 234,242 ----
+      args may be a list or tuple of strings. """    
+      _execvpe(file, args, env)
+  
+  def _execvpe(file, args, env=None):
++     from errno import ENOENT, ENOTDIR
++ 
+      if env is not None:
+          func = execve
+          argrest = (args, env)
+***************
+*** 243,249 ****
+          func = execv
+          argrest = (args,)
+          env = environ
+-     global _notfound
+      head, tail = path.split(file)
+      if head:
+          apply(func, (file,) + argrest)
+--- 244,249 ----
+***************
+*** 253,272 ****
+      else:
+          envpath = defpath
+      PATH = envpath.split(pathsep)
+!     if not _notfound:
+!         import tempfile
+!         # Exec a file that is guaranteed not to exist
+!         try: execv(tempfile.mktemp(), ('blah',))
+!         except error, _notfound: pass
+!     exc, arg = error, _notfound
+      for dir in PATH:
+          fullname = path.join(dir, file)
+          try:
+              apply(func, (fullname,) + argrest)
+!         except error, (errno, msg):
+!             if errno != arg[0]:
+!                 exc, arg = error, (errno, msg)
+!     raise exc, arg
+  
+  # Change environ to automatically call putenv() if it exists
+  try:
+--- 253,273 ----
+      else:
+          envpath = defpath
+      PATH = envpath.split(pathsep)
+!     saved_exc = None
+!     saved_tb = None
+      for dir in PATH:
+          fullname = path.join(dir, file)
+          try:
+              apply(func, (fullname,) + argrest)
+!         except error, e:
+!             tb = sys.exc_info()[2]
+!             if (e.errno != ENOENT and e.errno != ENOTDIR
+!                 and saved_exc is None):
+!                 saved_exc = e
+!                 saved_tb = tb
+!     if saved_exc:
+!         raise error, saved_exc, saved_tb
+!     raise error, e, tb
+  
+  # Change environ to automatically call putenv() if it exists
+  try: