-/* 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 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
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"