1 /* An interface to write() that writes all it is asked to write.
3 Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "full-write.h"
32 #include "safe-write.h"
34 /* Write COUNT bytes at BUF to descriptor FD, retrying if interrupted
35 or if partial writes occur. Return the number of bytes successfully
36 written, setting errno if that is less than COUNT. */
38 full_write (int fd, const void *buf, size_t count)
40 size_t total_written = 0;
44 const char *ptr = buf;
48 size_t written = safe_write (fd, ptr, count);
49 if (written == (size_t)-1)
53 /* Some buggy drivers return 0 when you fall off a device's
54 end. (Example: Linux 1.2.13 on /dev/fd0.) */
58 total_written += written;