The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * SPDX-License-Identifier: BSD-4-Clause
    3  *
    4  * Copyright 1997 Sean Eric Fagan
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. All advertising materials mentioning features or use of this software
   15  *    must display the following acknowledgement:
   16  *      This product includes software developed by Sean Eric Fagan
   17  * 4. Neither the name of the author may be used to endorse or promote
   18  *    products derived from this software without specific prior written
   19  *    permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  */
   34 
   35 /*
   36  * procfs ioctl definitions.
   37  *
   38  * $FreeBSD: stable/12/sys/sys/pioctl.h 325966 2017-11-18 14:26:50Z pfg $
   39  */
   40 
   41 #ifndef _SYS_PIOCTL_H
   42 # define _SYS_PIOCTL_H
   43 
   44 # include <sys/ioccom.h>
   45 
   46 struct procfs_status {
   47         int     state;  /* Running, stopped, something else? */
   48         int     flags;  /* Any flags */
   49         unsigned long   events; /* Events to stop on */
   50         int     why;    /* What event, if any, proc stopped on */
   51         unsigned long   val;    /* Any extra data */
   52 };
   53 
   54 # define        PIOCBIS _IOWINT('p', 1) /* Set event flag */
   55 # define        PIOCBIC _IOWINT('p', 2) /* Clear event flag */
   56 # define        PIOCSFL _IOWINT('p', 3) /* Set flags */
   57                         /* wait for proc to stop */
   58 # define        PIOCWAIT        _IOR('p', 4, struct procfs_status)
   59 # define        PIOCCONT        _IOWINT('p', 5) /* Continue a process */
   60                         /* Get proc status */
   61 # define        PIOCSTATUS      _IOR('p', 6, struct procfs_status)
   62 # define        PIOCGFL _IOR('p', 7, unsigned int)      /* Get flags */
   63 
   64 # define        S_EXEC  0x00000001      /* stop-on-exec */
   65 # define        S_SIG   0x00000002      /* stop-on-signal */
   66 # define        S_SCE   0x00000004      /* stop on syscall entry */
   67 # define        S_SCX   0x00000008      /* stop on syscall exit */
   68 # define        S_CORE  0x00000010      /* stop on coredump */
   69 # define        S_EXIT  0x00000020      /* stop on exit */
   70 # define        S_ALLSTOPS  0x003f      /* stop on all events */
   71 
   72 /*
   73  * If PF_LINGER is set in procp->p_pfsflags, then the last close
   74  * of a /proc/<pid>/mem file will not clear out the stops and continue
   75  * the process.
   76  */
   77 
   78 # define PF_LINGER      0x01    /* Keep stops around after last close */
   79 # define PF_ISUGID      0x02    /* Ignore UID/GID changes */
   80 # define PF_FORK        0x04    /* Retain settings on fork() */
   81 #endif 

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