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- /*
- * INET An implementation of the TCP/IP protocol suite for the LINUX
- * operating system. INET is implemented using the BSD Socket
- * interface as the means of communication with the user level.
- *
- * Various kernel-resident INET utility functions; mainly
- * for format conversion and debugging output.
- *
- * Version: @(#)utils.c 1.0.7 05/18/93
- *
- * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
- *
- * Fixes:
- * Alan Cox : verify_area check.
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- #include <asm/segment.h>
- #include <asm/system.h>
- #include <linux/types.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/string.h>
- #include <linux/mm.h>
- #include <linux/socket.h>
- #include <linux/in.h>
- #include <linux/errno.h>
- #include <linux/stat.h>
- #include <stdarg.h>
- #include "inet.h"
- #include "dev.h"
- #include "eth.h"
- #include "ip.h"
- #include "protocol.h"
- #include "tcp.h"
- #include "skbuff.h"
- #include "arp.h"
-
-
- /* Display an IP address in readable format. */
- char *in_ntoa(unsigned long in)
- {
- static char buff[18];
- register char *p;
-
- p = (char *) ∈
- sprintf(buff, "%d.%d.%d.%d",
- (p[0] & 255), (p[1] & 255), (p[2] & 255), (p[3] & 255));
- return(buff);
- }
-
-
- /* Convert an ASCII string to binary IP. */
- unsigned long
- in_aton(char *str)
- {
- unsigned long l;
- unsigned int val;
- int i;
-
- l = 0;
- for (i = 0; i < 4; i++) {
- l <<= 8;
- if (*str != '\0') {
- val = 0;
- while (*str != '\0' && *str != '.') {
- val *= 10;
- val += *str - '0';
- str++;
- }
- l |= val;
- if (*str != '\0') str++;
- }
- }
- return(htonl(l));
- }
-
-
- void
- dprintf(int level, char *fmt, ...)
- {
- va_list args;
- char *buff;
- extern int vsprintf(char * buf, const char * fmt, va_list args);
-
- if (level != inet_debug) return;
-
- buff = (char *) kmalloc(256, GFP_ATOMIC);
- if (buff != NULL) {
- va_start(args, fmt);
- vsprintf(buff, fmt, args);
- va_end(args);
- printk(buff);
- kfree(buff);
- }
- }
-
-
- int
- dbg_ioctl(void *arg, int level)
- {
- int val;
- int err;
-
- if (!suser()) return(-EPERM);
- err=verify_area(VERIFY_READ, (void *)arg, sizeof(int));
- if(err)
- return err;
- val = get_fs_long((int *)arg);
- switch(val) {
- case 0: /* OFF */
- inet_debug = DBG_OFF;
- break;
- case 1: /* ON, INET */
- inet_debug = level;
- break;
-
- case DBG_RT: /* modules */
- case DBG_DEV:
- case DBG_ETH:
- case DBG_PROTO:
- case DBG_TMR:
- case DBG_PKT:
- case DBG_RAW:
-
- case DBG_LOOPB: /* drivers */
- case DBG_SLIP:
-
- case DBG_ARP: /* protocols */
- case DBG_IP:
- case DBG_ICMP:
- case DBG_TCP:
- case DBG_UDP:
-
- inet_debug = val;
- break;
-
- default:
- return(-EINVAL);
- }
-
- return(0);
- }
-