Assume that O_CLOEXEC is always defined and works

5 files changed, 2 insertions, 99 deletions

diff --git a/nss/Makefile b/nss/Makefile
index de6c47a1db..fa0418e249 100644
--- a/nss/Makefile
+++ b/nss/Makefile
@@ -74,7 +74,7 @@ vpath %.c $(subdir-dirs) ../locale/programs ../intl
 
 
 libnss_files-routines	:= $(addprefix files-,$(databases)) \
-			   files-initgroups files-have_o_cloexec files-init
+			   files-initgroups files-init
 
 libnss_db-dbs		:= $(addprefix db-,\
 				       $(filter-out hosts network key alias,\
diff --git a/nss/nss_db/db-open.c b/nss/nss_db/db-open.c
index 42ce00fe3b..1c58bd1c54 100644
--- a/nss/nss_db/db-open.c
+++ b/nss/nss_db/db-open.c
@@ -36,11 +36,7 @@ internal_setent (const char *file, struct nss_db_map *mapping)
 {
   enum nss_status status = NSS_STATUS_UNAVAIL;
 
-  int mode = O_RDONLY | O_LARGEFILE;
-#ifdef O_CLOEXEC
-  mode |= O_CLOEXEC;
-#endif
-  int fd = open_not_cancel_2 (file, mode);
+  int fd = open_not_cancel_2 (file, O_RDONLY | O_LARGEFILE | O_CLOEXEC);
   if (fd != -1)
     {
       struct nss_db_header header;
diff --git a/nss/nss_files/files-XXX.c b/nss/nss_files/files-XXX.c
index dbd38a346a..265331ef21 100644
--- a/nss/nss_files/files-XXX.c
+++ b/nss/nss_files/files-XXX.c
@@ -78,41 +78,6 @@ internal_setent (FILE **stream)
 
       if (*stream == NULL)
 	status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
-      else
-	{
-#if !defined O_CLOEXEC || !defined __ASSUME_O_CLOEXEC
-# ifdef O_CLOEXEC
-	  if (__have_o_cloexec <= 0)
-# endif
-	    {
-	      /* We have to make sure the file is  `closed on exec'.  */
-	      int result;
-	      int flags;
-
-	      result = flags = fcntl (fileno (*stream), F_GETFD, 0);
-	      if (result >= 0)
-		{
-# ifdef O_CLOEXEC
-		  if (__have_o_cloexec == 0)
-		    __have_o_cloexec = (flags & FD_CLOEXEC) == 0 ? -1 : 1;
-		  if (__have_o_cloexec < 0)
-# endif
-		    {
-		      flags |= FD_CLOEXEC;
-		      result = fcntl (fileno (*stream), F_SETFD, flags);
-		    }
-		}
-	      if (result < 0)
-		{
-		  /* Something went wrong.  Close the stream and return a
-		     failure.  */
-		  fclose (*stream);
-		  *stream = NULL;
-		  status = NSS_STATUS_UNAVAIL;
-		}
-	    }
-#endif
-	}
     }
   else
     rewind (*stream);
diff --git a/nss/nss_files/files-alias.c b/nss/nss_files/files-alias.c
index de4e36499e..cf872bb603 100644
--- a/nss/nss_files/files-alias.c
+++ b/nss/nss_files/files-alias.c
@@ -51,41 +51,6 @@ internal_setent (FILE **stream)
 
       if (*stream == NULL)
 	status = errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
-      else
-	{
-#if !defined O_CLOEXEC || !defined __ASSUME_O_CLOEXEC
-# ifdef O_CLOEXEC
-	  if (__have_o_cloexec <= 0)
-# endif
-	    {
-	      /* We have to make sure the file is  `closed on exec'.  */
-	      int result;
-	      int flags;
-
-	      result = flags = fcntl (fileno (*stream), F_GETFD, 0);
-	      if (result >= 0)
-		{
-# ifdef O_CLOEXEC
-		  if (__have_o_cloexec == 0)
-		    __have_o_cloexec = (flags & FD_CLOEXEC) == 0 ? -1 : 1;
-		  if (__have_o_cloexec < 0)
-# endif
-		    {
-		      flags |= FD_CLOEXEC;
-		      result = fcntl (fileno (*stream), F_SETFD, flags);
-		    }
-		}
-	      if (result < 0)
-		{
-		  /* Something went wrong.  Close the stream and return a
-		     failure.  */
-		  fclose (*stream);
-		  stream = NULL;
-		  status = NSS_STATUS_UNAVAIL;
-		}
-	    }
-#endif
-	}
     }
   else
     rewind (*stream);
diff --git a/nss/nss_files/files-have_o_cloexec.c b/nss/nss_files/files-have_o_cloexec.c
deleted file mode 100644
index 295ecccb77..0000000000
--- a/nss/nss_files/files-have_o_cloexec.c
+++ /dev/null
@@ -1,23 +0,0 @@
-/* Copyright (C) 2007-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <fcntl.h>
-#include <kernel-features.h>
-
-#if defined O_CLOEXEC && !defined __ASSUME_O_CLOEXEC
-int __have_o_cloexec;
-#endif