| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |