source: branches/2.2.2/mindi-busybox/libbb/full_write.c @ 1247

Last change on this file since 1247 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 725 bytes
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * Utility routines.
4 *
5 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6 *
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8 */
9
10#include <stdio.h>
11#include <unistd.h>
12#include "libbb.h"
13
14/*
15 * Write all of the supplied buffer out to a file.
16 * This does multiple writes as necessary.
17 * Returns the amount written, or -1 on an error.
18 */
19ssize_t bb_full_write(int fd, const void *buf, size_t len)
20{
21    ssize_t cc;
22    ssize_t total;
23
24    total = 0;
25
26    while (len > 0) {
27        cc = safe_write(fd, buf, len);
28
29        if (cc < 0)
30            return cc;      /* write() returns -1 on failure. */
31
32        total += cc;
33        buf = ((const char *)buf) + cc;
34        len -= cc;
35    }
36
37    return total;
38}
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