FreeBSD/Linux Kernel Cross Reference
sys/sys/pioctl.h

     /*
      * Copryight 1997 Sean Eric Fagan
      *
      * 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. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Sean Eric Fagan
     * 4. Neither the name of the author 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.
     *
     */
    
    /*
     * procfs ioctl definitions.
     *
     * $FreeBSD: src/sys/sys/pioctl.h,v 1.8 1999/08/28 00:51:55 peter Exp $
     * $DragonFly: src/sys/sys/pioctl.h,v 1.3 2006/05/20 02:42:13 dillon Exp $
     */
    
    #ifndef _SYS_PIOCTL_H_
    #define _SYS_PIOCTL_H_
    
    # include <sys/ioccom.h>
    
    struct procfs_status {
            int     state;  /* Running, stopped, something else? */
            int     flags;  /* Any flags */
            unsigned long   events; /* Events to stop on */
            int     why;    /* What event, if any, proc stopped on */
            unsigned long   val;    /* Any extra data */
    };
    
    # define        PIOCBIS _IOC(IOC_IN, 'p', 1, 0) /* Set event flag */
    # define        PIOCBIC _IOC(IOC_IN, 'p', 2, 0) /* Clear event flag */
    # define        PIOCSFL _IOC(IOC_IN, 'p', 3, 0) /* Set flags */
                            /* wait for proc to stop */
    # define        PIOCWAIT        _IOR('p', 4, struct procfs_status)
    # define        PIOCCONT        _IOC(IOC_IN, 'p', 5, 0) /* Continue a process */
                            /* Get proc status */
    # define        PIOCSTATUS      _IOR('p', 6, struct procfs_status)
    # define        PIOCGFL _IOR('p', 7, unsigned int)      /* Get flags */
    
    # define S_EXEC 0x00000001      /* stop-on-exec */
    # define        S_SIG   0x00000002      /* stop-on-signal */
    # define        S_SCE   0x00000004      /* stop on syscall entry */
    # define        S_SCX   0x00000008      /* stop on syscall exit */
    # define        S_CORE  0x00000010      /* stop on coredump */
    # define        S_EXIT  0x00000020      /* stop on exit */
    
    /*
     * If PF_LINGER is set in procp->p_pfsflags, then the last close
     * of a /proc/<pid>/mem file will nto clear out the stops and continue
     * the process.
     */
    
    # define PF_LINGER      0x01    /* Keep stops around after last close */
    # define PF_ISUGID      0x02    /* Ignore UID/GID changes */
    
    #endif 

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