extern-inline: port better to OS X 10.9

[gnulib.git] / lib / safe-write.c

diff --git a/lib/safe-write.c b/lib/safe-write.c
index 8c60bba..fed363c 100644 (file)
--- a/lib/safe-write.c
+++ b/lib/safe-write.c
@@ -1,10 +1,10 @@
-/* An interface to write() that retries after interrupts.
-   Copyright (C) 1993, 1994, 1998, 2002 Free Software Foundation, Inc.
+/* An interface to write that retries after interrupts.
+   Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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 2, or (at your option)
-   any later version.
+   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
@@ -12,76 +12,7 @@
    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, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-/* Specification.  */
-#include "safe-write.h"
-
-/* Get ssize_t.  */
-#include <sys/types.h>
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-
-#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
-
-#include <limits.h>
-
-#ifndef CHAR_BIT
-# define CHAR_BIT 8
-#endif
-
-/* The extra casts work around common compiler bugs.  */
-#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
-/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
-   It is necessary at least when t == time_t.  */
-#define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
-                             ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
-#define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
-
-#ifndef INT_MAX
-# define INT_MAX TYPE_MAXIMUM (int)
-#endif
-
-/* We don't pass an nbytes count > SSIZE_MAX to write() - POSIX says the
-   effect would be implementation-defined.  Also we don't pass an nbytes
-   count > INT_MAX but <= SSIZE_MAX to write() - this triggers a bug in
-   Tru64 5.1.  */
-#define MAX_BYTES_TO_READ INT_MAX
-
-/* Write up to COUNT bytes at BUF to descriptor FD, retrying if interrupted.
-   Return the actual number of bytes written, zero for EOF, or (size_t) -1
-   for an error.  */
-size_t
-safe_write (int fd, const void *buf, size_t count)
-{
-  size_t nbytes_to_write = count;
-  ssize_t result;
-
-  /* Limit the number of bytes to write, to avoid running into unspecified
-     behaviour.  But keep the file pointer block aligned when doing so.
-     Note that in this case we don't need to call write() multiple times here,
-     because the caller is prepared to partial results.  */
-  if (nbytes_to_write > MAX_BYTES_TO_READ)
-    nbytes_to_write = MAX_BYTES_TO_READ & ~8191;
-
-  do
-    {
-      result = write (fd, buf, nbytes_to_write);
-    }
-#ifdef EINTR
-  while (result < 0 && errno == EINTR);
-#else
-  while (0);
-#endif
-
-  return (size_t) result;
-}
+#define SAFE_WRITE
+#include "safe-read.c"