Contents of /trunk/mkinitrd-magellan/busybox/libbb/full_write.c
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 717 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
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 | */ |
19 | ssize_t 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) { |
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 | } |