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author | Eric Andersen <andersen@codepoet.org> | 2001-03-16 22:47:14 +0000 |
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committer | Eric Andersen <andersen@codepoet.org> | 2001-03-16 22:47:14 +0000 |
commit | aad1a88c76f208d188fd061e3723bd637437e8d5 (patch) | |
tree | 75ac2b994f7f04af776e93eeedba82b873ff557e /libbb/full_read.c | |
parent | dfba13d199bb58d802df99c1ef20fdc0d628e86d (diff) | |
download | busybox-w32-aad1a88c76f208d188fd061e3723bd637437e8d5.tar.gz busybox-w32-aad1a88c76f208d188fd061e3723bd637437e8d5.tar.bz2 busybox-w32-aad1a88c76f208d188fd061e3723bd637437e8d5.zip |
Convert utility.c into libbb.a. It is now a whole pile of .c
files. Clean up the resulting damage and fix up the makefile.
-Erik
Diffstat (limited to 'libbb/full_read.c')
-rw-r--r-- | libbb/full_read.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/libbb/full_read.c b/libbb/full_read.c new file mode 100644 index 000000000..e9c4bbfc6 --- /dev/null +++ b/libbb/full_read.c | |||
@@ -0,0 +1,70 @@ | |||
1 | /* vi: set sw=4 ts=4: */ | ||
2 | /* | ||
3 | * Utility routines. | ||
4 | * | ||
5 | * Copyright (C) tons of folks. Tracking down who wrote what | ||
6 | * isn't something I'm going to worry about... If you wrote something | ||
7 | * here, please feel free to acknowledge your work. | ||
8 | * | ||
9 | * This program is free software; you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU General Public License as published by | ||
11 | * the Free Software Foundation; either version 2 of the License, or | ||
12 | * (at your option) any later version. | ||
13 | * | ||
14 | * This program is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
17 | * General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License | ||
20 | * along with this program; if not, write to the Free Software | ||
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
22 | * | ||
23 | * Based in part on code from sash, Copyright (c) 1999 by David I. Bell | ||
24 | * Permission has been granted to redistribute this code under the GPL. | ||
25 | * | ||
26 | */ | ||
27 | |||
28 | #include <stdio.h> | ||
29 | #include <unistd.h> | ||
30 | #include "libbb.h" | ||
31 | |||
32 | |||
33 | /* | ||
34 | * Read all of the supplied buffer from a file. | ||
35 | * This does multiple reads as necessary. | ||
36 | * Returns the amount read, or -1 on an error. | ||
37 | * A short read is returned on an end of file. | ||
38 | */ | ||
39 | int full_read(int fd, char *buf, int len) | ||
40 | { | ||
41 | int cc; | ||
42 | int total; | ||
43 | |||
44 | total = 0; | ||
45 | |||
46 | while (len > 0) { | ||
47 | cc = read(fd, buf, len); | ||
48 | |||
49 | if (cc < 0) | ||
50 | return -1; | ||
51 | |||
52 | if (cc == 0) | ||
53 | break; | ||
54 | |||
55 | buf += cc; | ||
56 | total += cc; | ||
57 | len -= cc; | ||
58 | } | ||
59 | |||
60 | return total; | ||
61 | } | ||
62 | |||
63 | /* END CODE */ | ||
64 | /* | ||
65 | Local Variables: | ||
66 | c-file-style: "linux" | ||
67 | c-basic-offset: 4 | ||
68 | tab-width: 4 | ||
69 | End: | ||
70 | */ | ||