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/user.h

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    1 /*
    2  * Copyright (c) 1982, 1986, 1989, 1991, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by the University of
   16  *      California, Berkeley and its contributors.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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  *      @(#)user.h      8.2 (Berkeley) 9/23/93
   34  * $FreeBSD: stable/3/sys/sys/user.h 50583 1999-08-29 16:33:42Z peter $
   35  */
   36 
   37 #ifndef _SYS_USER_H_
   38 #define _SYS_USER_H_
   39 
   40 #include <machine/pcb.h>
   41 #ifndef KERNEL
   42 /* stuff that *used* to be included by user.h, or is now needed */
   43 #include <sys/errno.h>
   44 #include <sys/time.h>
   45 #include <sys/resource.h>
   46 #include <sys/ucred.h>
   47 #include <sys/uio.h>
   48 #include <sys/proc.h>
   49 #include <vm/vm.h>              /* XXX */
   50 #include <vm/vm_param.h>        /* XXX */
   51 #include <vm/pmap.h>            /* XXX */
   52 #include <sys/lock.h>           /* XXX */
   53 #include <vm/vm_map.h>          /* XXX */
   54 #endif /* !KERNEL */
   55 #ifndef _SYS_RESOURCEVAR_H_
   56 #include <sys/resourcevar.h>
   57 #endif
   58 #ifndef _SYS_SIGNALVAR_H_
   59 #include <sys/signalvar.h>
   60 #endif
   61 
   62 /*
   63  * KERN_PROC subtype ops return arrays of augmented proc structures:
   64  */
   65 struct kinfo_proc {
   66         struct  proc kp_proc;                   /* proc structure */
   67         struct  eproc {
   68                 struct  proc *e_paddr;          /* address of proc */
   69                 struct  session *e_sess;        /* session pointer */
   70                 struct  pcred e_pcred;          /* process credentials */
   71                 struct  ucred e_ucred;          /* current credentials */
   72                 struct  procsig e_procsig;      /* shared signal structure */
   73                 struct  vmspace e_vm;           /* address space */
   74                 pid_t   e_ppid;                 /* parent process id */
   75                 pid_t   e_pgid;                 /* process group id */
   76                 short   e_jobc;                 /* job control counter */
   77                 dev_t   e_tdev;                 /* controlling tty dev */
   78                 pid_t   e_tpgid;                /* tty process group id */
   79                 struct  session *e_tsess;       /* tty session pointer */
   80 #define WMESGLEN        7
   81                 char    e_wmesg[WMESGLEN+1];    /* wchan message */
   82                 segsz_t e_xsize;                /* text size */
   83                 short   e_xrssize;              /* text rss */
   84                 short   e_xccount;              /* text references */
   85                 short   e_xswrss;
   86                 long    e_flag;
   87 #define EPROC_CTTY      0x01    /* controlling tty vnode active */
   88 #define EPROC_SLEADER   0x02    /* session leader */
   89                 char    e_login[roundup(MAXLOGNAME, sizeof(long))];     /* setlogin() name */
   90                 long    e_spare[2];
   91         } kp_eproc;
   92 };
   93 void fill_eproc __P((struct proc *, struct eproc *));
   94 
   95 
   96 /*
   97  * Per process structure containing data that isn't needed in core
   98  * when the process isn't running (esp. when swapped out).
   99  * This structure may or may not be at the same kernel address
  100  * in all processes.
  101  */
  102 
  103 struct  user {
  104         struct  pcb u_pcb;
  105         struct  sigacts u_sigacts;      /* p_sigacts points here (use it!) */
  106         struct  pstats u_stats;         /* p_stats points here (use it!) */
  107         /*
  108          * Remaining fields only for core dump and/or ptrace--
  109          * not valid at other times!
  110          */
  111         struct  kinfo_proc u_kproc;     /* proc + eproc */
  112         struct  md_coredump u_md;       /* machine dependent glop */
  113 };
  114 
  115 /*
  116  * Redefinitions to make the debuggers happy for now...  This subterfuge
  117  * brought to you by coredump() and trace_req().  These fields are *only*
  118  * valid at those times!
  119  */
  120 #ifdef __i386__
  121 #define U_ar0   u_kproc.kp_proc.p_md.md_regs /* copy of curproc->p_md.md_regs */
  122 #endif
  123 #ifdef __alpha__
  124 #define U_ar0   u_kproc.kp_proc.p_md.md_tf /* copy of curproc->p_md.md_tf */
  125 #endif
  126 #define U_tsize u_kproc.kp_eproc.e_vm.vm_tsize
  127 #define U_dsize u_kproc.kp_eproc.e_vm.vm_dsize
  128 #define U_ssize u_kproc.kp_eproc.e_vm.vm_ssize
  129 #define U_sig   u_kproc.kp_proc.p_sig
  130 #define U_code  u_kproc.kp_proc.p_code
  131 
  132 #ifndef KERNEL
  133 #define u_ar0   U_ar0
  134 #define u_tsize U_tsize
  135 #define u_dsize U_dsize
  136 #define u_ssize U_ssize
  137 #define u_sig   U_sig
  138 #define u_code  U_code
  139 #endif /* KERNEL */
  140 
  141 #endif

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