X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fsafe-write.c;h=a2c3b4df1d11c8f2b1628b9f09cbbf29dd6bdd9e;hb=afc6cbe4fe4892c5ee4166cab87fede6f294a27d;hp=55962039e5fc655f96caccb0103f44ec75000e4e;hpb=849efe7683e163ede9240b27d675977c71c76ce8;p=gnulib.git
diff --git a/lib/safe-write.c b/lib/safe-write.c
index 55962039e..a2c3b4df1 100644
--- 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, 2009-2010 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
@@ -12,72 +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 . */
-#if HAVE_CONFIG_H
-# include
-#endif
-
-/* Specification. */
-#include "safe-write.h"
-
-/* Get ssize_t. */
-#include
-#if HAVE_UNISTD_H
-# include
-#endif
-
-#include
-#ifndef errno
-extern int errno;
-#endif
-
-#include
-
-/* 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 total_written = 0;
-
- if (count > 0)
- {
- const char *ptr = (const char *) buf;
- do
- {
- size_t nbytes_to_write = count;
- ssize_t result;
-
- /* Limit the number of bytes to write in one round, to avoid running
- into unspecified behaviour. But keep the file pointer block
- aligned when doing so. */
- if (nbytes_to_write > MAX_BYTES_TO_READ)
- nbytes_to_write = MAX_BYTES_TO_READ & ~8191;
-
- result = write (fd, ptr, nbytes_to_write);
- if (result < 0)
- {
-#ifdef EINTR
- if (errno == EINTR)
- continue;
-#endif
- return result;
- }
- total_written += result;
- ptr += result;
- count -= result;
- }
- while (count > 0);
- }
-
- return total_written;
-}
+#define SAFE_WRITE
+#include "safe-read.c"