Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Various kernel-resident INET utility functions; mainly | |
7 | * for format conversion and debugging output. | |
8 | * | |
9 | * Version: $Id: utils.c,v 1.8 2000/10/03 07:29:01 anton Exp $ | |
10 | * | |
11 | * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
12 | * | |
13 | * Fixes: | |
14 | * Alan Cox : verify_area check. | |
15 | * Alan Cox : removed old debugging. | |
16 | * Andi Kleen : add net_ratelimit() | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or | |
19 | * modify it under the terms of the GNU General Public License | |
20 | * as published by the Free Software Foundation; either version | |
21 | * 2 of the License, or (at your option) any later version. | |
22 | */ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/types.h> | |
26 | #include <asm/byteorder.h> | |
27 | ||
28 | /* | |
29 | * Convert an ASCII string to binary IP. | |
30 | */ | |
31 | ||
32 | __u32 in_aton(const char *str) | |
33 | { | |
34 | unsigned long l; | |
35 | unsigned int val; | |
36 | int i; | |
37 | ||
38 | l = 0; | |
39 | for (i = 0; i < 4; i++) | |
40 | { | |
41 | l <<= 8; | |
42 | if (*str != '\0') | |
43 | { | |
44 | val = 0; | |
45 | while (*str != '\0' && *str != '.') | |
46 | { | |
47 | val *= 10; | |
48 | val += *str - '0'; | |
49 | str++; | |
50 | } | |
51 | l |= val; | |
52 | if (*str != '\0') | |
53 | str++; | |
54 | } | |
55 | } | |
56 | return(htonl(l)); | |
57 | } | |
58 | ||
59 | EXPORT_SYMBOL(in_aton); |