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Dogcows Code - chaz/tar/blob - lib/full-write.c
1 /* full-write.c -- an interface to write that retries after interrupts
2 Copyright (C) 1993, 1994, 1997, 1998, 1999 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 Copied largely from GNU C's cccp.c.
25 #include <sys/types.h>
27 #include "safe-read.h"
38 /* Write LEN bytes at PTR to descriptor DESC, retrying if interrupted.
39 Return LEN upon success, write's (negative) error code otherwise. */
42 full_write (int desc
, const char *ptr
, size_t len
)
44 ssize_t total_written
= 0;
48 ssize_t written
= write (desc
, ptr
, len
);
49 /* FIXME: write on my slackware Linux 1.2.13 returns zero when
50 I try to write more data than there is room on a floppy disk.
51 This puts dd into an infinite loop. Reproduce with
52 dd if=/dev/zero of=/dev/fd0. */
61 total_written
+= written
;
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