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Viewing changes to tests/regression/subdomain/syscall_sysctl.c

  • Committer: Bazaar Package Importer
  • Author(s): Kees Cook
  • Date: 2011-04-27 10:38:07 UTC
  • mfrom: (5.1.118 natty)
  • Revision ID: james.westby@ubuntu.com-20110427103807-ym3rhwys6o84ith0
Tags: 2.6.1-2
debian/copyright: clarify for some full organization names.

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tests/regression/subdomain/syscall_sysctl.c
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/* $Id: syscall_sysctl.c 61 2006-05-19 18:32:14Z steve-beattie $ */
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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 <sys/sysctl.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <string.h>
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#define BUFSIZE 4096
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int main(int argc, char *argv[])
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{
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        int save_max_threads, new_max_threads, read_new_max_threads;
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        size_t save_sz = sizeof(save_max_threads);
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        int name[] = {CTL_KERN, KERN_MAX_THREADS};
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        int readonly = 0;
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        if ((argc > 1) && strcmp(argv[1],"ro") == 0) 
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                readonly = 1;
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        if (sysctl(name, sizeof(name), &save_max_threads, &save_sz, NULL, 0) == -1){
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                fprintf(stderr, "FAIL: sysctl read failed - %s\n",
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                        strerror(errno));
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                return 1;
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        }
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        /* printf("Kernel max threads (saved) is %d\n", save_max_threads); */
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        if (readonly) {
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                printf ("PASS\n");
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                return 0;
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        }
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        new_max_threads = save_max_threads + 1024;
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        if (sysctl(name, sizeof(name), NULL, 0, &new_max_threads, save_sz) == -1){
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                fprintf(stderr, "FAIL: sysctl write failed - %s\n",
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                        strerror(errno));
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                return 1;
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        }
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        if (sysctl(name, sizeof(name), &read_new_max_threads, &save_sz, NULL, 0) == -1){
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                fprintf(stderr, "FAIL: sysctl read failed - %s\n",
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                        strerror(errno));
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                return 1;
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        }
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        /* printf("Kernel max threads (new) is %d\n", read_new_max_threads); */
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        if (read_new_max_threads != new_max_threads) {
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                fprintf(stderr, "FAIL: read value does not match written values\n");
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                return 1;
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        }
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        if (sysctl(name, sizeof(name), NULL, 0, &save_max_threads, save_sz) == -1){
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                fprintf(stderr, "FAIL: sysctl write failed - %s\n",
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                        strerror(errno));
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                return 1;
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        }
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        if (sysctl(name, sizeof(name), &read_new_max_threads, &save_sz, NULL, 0) == -1){
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                fprintf(stderr, "FAIL: sysctl read failed - %s\n",
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                        strerror(errno));
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                return 1;
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        }
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        /* printf("Kernel max threads (saved) is %d\n", read_new_max_threads);*/
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        if (read_new_max_threads != save_max_threads) {
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                fprintf(stderr, "FAIL: read value does not match written values\n");
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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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}