/* full-write.c -- an interface to write that retries after interrupts
- Copyright 1993, 1994, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright 1993,94,97,98,99,2000, 2001 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
#include <sys/types.h>
-#include "safe-read.h"
+#include "full-write.h"
#if HAVE_UNISTD_H
# include <unistd.h>
extern int errno;
#endif
-/* Write LEN bytes at PTR to descriptor DESC, retrying if interrupted.
- Return LEN upon success, -1 (setting errno) otherwise. */
+/* Write LEN bytes at PTR to descriptor DESC, retrying if interrupted
+ or if partial writes occur. Return the number of bytes successfully
+ written, setting errno if that is less than LEN. */
-ssize_t
+size_t
full_write (int desc, const char *ptr, size_t len)
{
- ssize_t total_written = 0;
+ size_t total_written = 0;
while (len > 0)
{
if (errno == EINTR)
continue;
#endif
- return -1;
+ break;
}
total_written += written;
ptr += written;