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changeset 11882:52791eb62094

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New module 'mkostemp'.
author Bruno Haible <bruno@clisp.org>
date Sun, 23 Aug 2009 14:11:27 +0200
parents 9e30ae0c65a0
children 729b89da65db
files ChangeLog NEWS doc/glibc-functions/mkostemp.texi lib/mkdtemp.c lib/mkostemp.c lib/mkstemp.c lib/stdlib.in.h lib/tempname.c lib/tempname.h m4/mkostemp.m4 m4/stdlib_h.m4 modules/mkostemp modules/stdlib
diffstat 13 files changed, 171 insertions(+), 28 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,26 @@
+2009-08-23  Bruno Haible  <bruno@clisp.org>
+
+	New module 'mkostemp'.
+	Based on Ulrich Drepper's 2007-08-10 change in glibc.
+	* lib/stdlib.in.h (mksotemp): New declaration.
+	* lib/mkostemp.c: New file, from glibc with modifications.
+	* lib/tempname.h (GT_FILE): Remove outdated comment.
+	(gen_tempname): Add flags argument.
+	* lib/tempname.c (__GT_BIGFILE): Remove macro.
+	(__GT_FILE): Map to 1.
+	(small_open, large_open): Remove macros.
+	(__gen_tempname): Add flags argument. Remove code for __GT_BIGFILE.
+	* lib/mkstemp.c (mkstemp): Update.
+	* lib/mkdtemp.c (mkdtemp): Likewise.
+	* m4/mkostemp.m4: New file.
+	* m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): Initialize GNULIB_MKOSTEMP,
+	HAVE_MKOSTEMP.
+	* modules/stdlib (Makefile.am): Substitute GNULIB_MKOSTEMP,
+	HAVE_MKOSTEMP.
+	* modules/mkostemp: New file, based on modules/mkstemp.
+	* doc/glibc-functions/mkostemp.texi: Mention the new module.
+	* NEWS: Mention the change.
+
 2009-08-23  Bruno Haible  <bruno@clisp.org>
 
 	* lib/pipe2.c (pipe2): Support O_TEXT, O_BINARY on all platforms.
--- a/NEWS
+++ b/NEWS
@@ -6,6 +6,9 @@
 
 Date        Modules         Changes
 
+2009-08-23  tempname        The gen_tempname function takes an additional
+                            'flags' argument. You can safely pass 0.
+
 2009-08-12  getopt          This module is deprecated. Please choose among
                             getopt-posix and getopt-gnu. getopt-gnu provides
                             "long options" and "options with optional
--- a/doc/glibc-functions/mkostemp.texi
+++ b/doc/glibc-functions/mkostemp.texi
@@ -2,15 +2,15 @@
 @subsection @code{mkostemp}
 @findex mkostemp
 
-Gnulib module: ---
+Gnulib module: mkostemp
 
 Portability problems fixed by Gnulib:
 @itemize
-@end itemize
-
-Portability problems not fixed by Gnulib:
-@itemize
 @item
 This function is missing on all non-glibc platforms:
 MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 10, Cygwin, mingw, Interix 3.5, BeOS.
 @end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@end itemize
--- a/lib/mkdtemp.c
+++ b/lib/mkdtemp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999, 2001-2003, 2006-2007 Free Software Foundation, Inc.
+/* Copyright (C) 1999, 2001-2003, 2006-2007, 2009 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This program is free software: you can redistribute it and/or modify
@@ -31,7 +31,7 @@
 char *
 mkdtemp (char *template)
 {
-  if (gen_tempname (template, GT_DIR))
+  if (gen_tempname (template, 0, GT_DIR))
     return NULL;
   else
     return template;
new file mode 100644
--- /dev/null
+++ b/lib/mkostemp.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1998, 1999, 2001, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
+   This file is derived from the one in the GNU C Library.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#if !_LIBC
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+
+#if !_LIBC
+# include "tempname.h"
+# define __gen_tempname gen_tempname
+# define __GT_FILE GT_FILE
+#endif
+
+#include <stdio.h>
+
+#ifndef __GT_FILE
+# define __GT_FILE 0
+#endif
+
+/* Generate a unique temporary file name from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   Then open the file and return a fd. */
+int
+mkostemp (template, flags)
+     char *template;
+     int flags;
+{
+  return __gen_tempname (template, flags, __GT_FILE);
+}
--- a/lib/mkstemp.c
+++ b/lib/mkstemp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998, 1999, 2001, 2005, 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 1998, 1999, 2001, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
    This file is derived from the one in the GNU C Library.
 
    This program is free software: you can redistribute it and/or modify
@@ -40,5 +40,5 @@
 mkstemp (template)
      char *template;
 {
-  return __gen_tempname (template, __GT_FILE);
+  return __gen_tempname (template, 0, __GT_FILE);
 }
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -207,6 +207,31 @@
 #endif
 
 
+#if @GNULIB_MKOSTEMP@
+# if !@HAVE_MKOSTEMP@
+/* Create a unique temporary file from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the file name unique.
+   The flags are a bitmask, possibly including O_CLOEXEC (defined in <fcntl.h>)
+   and O_TEXT, O_BINARY (defined in "binary-io.h").
+   The file is then created, with the specified flags, ensuring it didn't exist
+   before.
+   The file is created read-write (mask at least 0600 & ~umask), but it may be
+   world-readable and world-writable (mask 0666 & ~umask), depending on the
+   implementation.
+   Returns the open file descriptor if successful, otherwise -1 and errno
+   set.  */
+extern int mkostemp (char * /*template*/, int /*flags*/);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef mkostemp
+# define mkostemp(t,f) \
+    (GL_LINK_WARNING ("mkostemp is unportable - " \
+                      "use gnulib module mkostemp for portability"), \
+     mkostemp (t, f))
+#endif
+
+
 #if @GNULIB_MKSTEMP@
 # if @REPLACE_MKSTEMP@
 /* Create a unique temporary file from TEMPLATE.
--- a/lib/tempname.c
+++ b/lib/tempname.c
@@ -1,7 +1,7 @@
 /* tempname.c - generate the name of a temporary file.
 
    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2000, 2001, 2002, 2003, 2005, 2006, 2007 Free Software Foundation,
+   2000, 2001, 2002, 2003, 2005, 2006, 2007, 2009 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
@@ -40,8 +40,7 @@
 # define TMP_MAX 238328
 #endif
 #ifndef __GT_FILE
-# define __GT_FILE	0
-# define __GT_BIGFILE	1
+# define __GT_FILE	1
 # define __GT_DIR	2
 # define __GT_NOCREATE	3
 #endif
@@ -59,12 +58,9 @@
 
 #if _LIBC
 # define struct_stat64 struct stat64
-# define small_open __open
-# define large_open __open64
 #else
 # define struct_stat64 struct stat
-# define small_open open
-# define large_open open
+# define __open open
 # define __gen_tempname gen_tempname
 # define __getpid getpid
 # define __gettimeofday gettimeofday
@@ -192,12 +188,11 @@
 			at the time of the call.
    __GT_FILE:		create the file using open(O_CREAT|O_EXCL)
 			and return a read-write fd.  The file is mode 0600.
-   __GT_BIGFILE:	same as __GT_FILE but use open64().
    __GT_DIR:		create a directory, which will be mode 0700.
 
    We use a clever algorithm to get hard-to-predict names. */
 int
-__gen_tempname (char *tmpl, int kind)
+__gen_tempname (char *tmpl, int flags, int kind)
 {
   int len;
   char *XXXXXX;
@@ -266,11 +261,9 @@
       switch (kind)
 	{
 	case __GT_FILE:
-	  fd = small_open (tmpl, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
-	  break;
-
-	case __GT_BIGFILE:
-	  fd = large_open (tmpl, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
+	  fd = __open (tmpl,
+		       (flags & ~0777) | O_RDWR | O_CREAT | O_EXCL,
+		       S_IRUSR | S_IWUSR);
 	  break;
 
 	case __GT_DIR:
--- a/lib/tempname.h
+++ b/lib/tempname.h
@@ -1,6 +1,6 @@
 /* Create a temporary file or directory.
 
-   Copyright (C) 2006 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -17,8 +17,6 @@
 
 /* header written by Eric Blake */
 
-/* In gnulib, always prefer large files.  GT_FILE maps to
-   __GT_BIGFILE, not __GT_FILE, for a reason.  */
 #define GT_FILE		1
 #define GT_DIR		2
 #define GT_NOCREATE	3
@@ -36,4 +34,4 @@
    GT_DIR:		create a directory, which will be mode 0700.
 
    We use a clever algorithm to get hard-to-predict names. */
-extern int gen_tempname (char *tmpl, int kind);
+extern int gen_tempname (char *tmpl, int flags, int kind);
new file mode 100644
--- /dev/null
+++ b/m4/mkostemp.m4
@@ -0,0 +1,25 @@
+# mkostemp.m4 serial 1
+dnl Copyright (C) 2009 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_MKOSTEMP],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+
+  dnl Persuade glibc <stdlib.h> to declare mkostemp().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_FUNCS_ONCE([mkostemp])
+  if test $ac_cv_func_mkostemp != yes; then
+    HAVE_MKOSTEMP=0
+    AC_LIBOBJ([mkostemp])
+    gl_PREREQ_MKOSTEMP
+  fi
+])
+
+# Prerequisites of lib/mkostemp.c.
+AC_DEFUN([gl_PREREQ_MKOSTEMP],
+[
+])
--- a/m4/stdlib_h.m4
+++ b/m4/stdlib_h.m4
@@ -1,4 +1,4 @@
-# stdlib_h.m4 serial 15
+# stdlib_h.m4 serial 16
 dnl Copyright (C) 2007-2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -40,6 +40,7 @@
   GNULIB_GETLOADAVG=0;    AC_SUBST([GNULIB_GETLOADAVG])
   GNULIB_GETSUBOPT=0;     AC_SUBST([GNULIB_GETSUBOPT])
   GNULIB_MKDTEMP=0;       AC_SUBST([GNULIB_MKDTEMP])
+  GNULIB_MKOSTEMP=0;      AC_SUBST([GNULIB_MKOSTEMP])
   GNULIB_MKSTEMP=0;       AC_SUBST([GNULIB_MKSTEMP])
   GNULIB_PUTENV=0;        AC_SUBST([GNULIB_PUTENV])
   GNULIB_RANDOM_R=0;      AC_SUBST([GNULIB_RANDOM_R])
@@ -55,6 +56,7 @@
   HAVE_GETSUBOPT=1;          AC_SUBST([HAVE_GETSUBOPT])
   HAVE_MALLOC_POSIX=1;       AC_SUBST([HAVE_MALLOC_POSIX])
   HAVE_MKDTEMP=1;            AC_SUBST([HAVE_MKDTEMP])
+  HAVE_MKOSTEMP=1;           AC_SUBST([HAVE_MKOSTEMP])
   HAVE_REALLOC_POSIX=1;      AC_SUBST([HAVE_REALLOC_POSIX])
   HAVE_RANDOM_R=1;           AC_SUBST([HAVE_RANDOM_R])
   HAVE_RPMATCH=1;            AC_SUBST([HAVE_RPMATCH])
new file mode 100644
--- /dev/null
+++ b/modules/mkostemp
@@ -0,0 +1,27 @@
+Description:
+mkostemp() function: create a private temporary file, with specific opening
+flags.
+
+Files:
+lib/mkostemp.c
+m4/mkostemp.m4
+
+Depends-on:
+extensions
+stdlib
+tempname
+
+configure.ac:
+gl_FUNC_MKOSTEMP
+gl_STDLIB_MODULE_INDICATOR([mkostemp])
+
+Makefile.am:
+
+Include:
+<stdlib.h>
+
+License:
+LGPLv2+
+
+Maintainer:
+Jim Meyering, Bruno Haible
--- a/modules/stdlib
+++ b/modules/stdlib
@@ -34,6 +34,7 @@
 	      -e 's|@''GNULIB_GETLOADAVG''@|$(GNULIB_GETLOADAVG)|g' \
 	      -e 's|@''GNULIB_GETSUBOPT''@|$(GNULIB_GETSUBOPT)|g' \
 	      -e 's|@''GNULIB_MKDTEMP''@|$(GNULIB_MKDTEMP)|g' \
+	      -e 's|@''GNULIB_MKOSTEMP''@|$(GNULIB_MKOSTEMP)|g' \
 	      -e 's|@''GNULIB_MKSTEMP''@|$(GNULIB_MKSTEMP)|g' \
 	      -e 's|@''GNULIB_PUTENV''@|$(GNULIB_PUTENV)|g' \
 	      -e 's|@''GNULIB_RANDOM_R''@|$(GNULIB_RANDOM_R)|g' \
@@ -48,6 +49,7 @@
 	      -e 's|@''HAVE_GETSUBOPT''@|$(HAVE_GETSUBOPT)|g' \
 	      -e 's|@''HAVE_MALLOC_POSIX''@|$(HAVE_MALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_MKDTEMP''@|$(HAVE_MKDTEMP)|g' \
+	      -e 's|@''HAVE_MKOSTEMP''@|$(HAVE_MKOSTEMP)|g' \
 	      -e 's|@''HAVE_REALLOC_POSIX''@|$(HAVE_REALLOC_POSIX)|g' \
 	      -e 's|@''HAVE_RANDOM_R''@|$(HAVE_RANDOM_R)|g' \
 	      -e 's|@''HAVE_RPMATCH''@|$(HAVE_RPMATCH)|g' \