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49 lines
983 B
C
49 lines
983 B
C
/* $Id: syscall_iopl.c 6040 2006-01-11 00:15:48Z tonyj $ */
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/*
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* Copyright (C) 2002-2005 Novell/SUSE
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2 of the
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* License.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/io.h> /* for glibc */
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#include <string.h>
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#include <stdlib.h>
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int main(int argc, char *argv[])
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{
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int ring;
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if (argc != 2) {
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fprintf(stderr, "usage: %s <ring>\n",
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argv[0]);
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return 1;
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}
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if ( (ring = strtol(argv[1], NULL, 0)) == 0) {
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if (errno == EINVAL) {
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fprintf(stderr, "FAIL: no <ring> argument in '%s'\n",
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argv[1]);
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}
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}
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if (ring > 3 || ring < 0) {
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fprintf(stderr, "FAIL: out of range (0-3)\n");
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}
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if (iopl(ring) == -1) {
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fprintf(stderr, "FAIL: iopl failed - %s\n",
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strerror(errno));
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return 1;
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}
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printf("PASS\n");
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return 0;
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}
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