mirror of https://github.com/proski/madwifi
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/*-
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* Copyright (c) 2002-2004 Gunter Burchardt, Local-Web AG
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id$
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*/
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/*
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* Simple Atheros-specific tool to inspect and set atheros specific values
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* athctrl [-i interface] [-d distance]
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* (default interface is wifi0).
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*/
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#include <sys/types.h>
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#include <sys/file.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <err.h>
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#include <net/if.h>
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static int
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setsysctrl(const char *dev, const char *control , u_long value)
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{
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char buffer[256];
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FILE * fd;
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snprintf(buffer, sizeof(buffer), "/proc/sys/dev/%s/%s", dev, control);
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fd = fopen(buffer, "w");
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if (fd != NULL) {
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fprintf(fd, "%li", value);
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fclose(fd);
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} else
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fprintf(stderr, "Could not open %s for writing!\n", buffer);
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return 0;
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}
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static void usage(void)
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{
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fprintf(stderr,
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"Atheros driver control\n"
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"Copyright (c) 2002-2004 Gunter Burchardt, Local-Web AG\n"
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"\n"
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"usage: athctrl [-i interface] [-d distance]\n"
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"\n"
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"options:\n"
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" -h show this usage\n"
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" -i interface (default interface is wifi0)\n"
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" -d specify the maximum distance of a sta or the distance\n"
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" of the master\n");
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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char device[IFNAMSIZ + 1];
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int distance = -1;
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int c;
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strncpy(device, "wifi0", sizeof (device));
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for (;;) {
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c = getopt(argc, argv, "d:i:h");
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if (c < 0)
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break;
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switch (c) {
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case 'h':
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usage();
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break;
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case 'd':
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distance = atoi(optarg);
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break;
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case 'i':
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strncpy(device, optarg, sizeof (device));
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break;
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default:
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usage();
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break;
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}
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}
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if (distance >= 0) {
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printf("Setting distance on interface %s to %i meters\n",
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device, distance);
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setsysctrl(device, "distance", distance);
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} else
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usage();
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return 0;
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}
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