Colony » Colony Scout

/*

 * Copyright (c) 2009, Kohsuke Ohtani

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the author nor the names of any co-contibutors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

/*

 * ktrace.c - system call trace utility.

 */

#include <sys/prex.h>

#include <ipc/ipc.h>

#include <ipc/proc.h>

#include <unistd.h>

#include <errno.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

int

main(int argc, char *argv[])

{

        struct msg m;

        object_t obj;

        if (argc < 2 || !strncmp(argv[1], "-?", 2)) {

                fputs("usage: ktrace command\n", stderr);

                exit(1);

        }

        /*

         * Set trace flag for current process.

         */

        if (object_lookup("!proc", &obj) != 0) {

                fputs("No process server found\n", stderr);

                exit(1);

        }

        m.hdr.code = PS_TRACE;

        msg_send(obj, &m, sizeof(m));

        /*

         * Execute command.

         */

        execvp(argv[1], &argv[2]);

        return 0;

}