BSD 4_3_Reno release

[unix-history] / usr / src / sys / sys / user.h

/*
* Copyright (c) 1982, 1986, 1989 Regents of the University of California.
* All rights reserved.
*
* Redistribution is only permitted until one year after the first shipment
* of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
* binary forms are permitted provided that: (1) source distributions retain
* this entire copyright notice and comment, and (2) distributions including
* binaries display the following acknowledgement:  This product includes
* software developed by the University of California, Berkeley and its
* contributors'' in the documentation or other materials provided with the
* distribution and in all advertising materials mentioning features or use
* of this software.  Neither the name of the University nor the names of
* its contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*      @(#)user.h      7.13 (Berkeley) 6/28/90
*/

#ifdef KERNEL
#include "machine/pcb.h"
#include "dmap.h"
#include "time.h"
#include "resource.h"
#include "namei.h"
#include "ucred.h"
#else
#include <machine/pcb.h>
#include <sys/dmap.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/namei.h>
#include <sys/ucred.h>
#endif

/*
* Per process structure containing data that
* isn't needed in core when the process is swapped out.
*/

struct  user {
       struct  pcb u_pcb;
       struct  proc *u_procp;          /* pointer to proc structure */
       int     *u_ar0;                 /* address of users saved R0 */

/* 1.1 - processes and protection */
#define u_cred u_nd.ni_cred
#define u_uid   u_cred->cr_uid          /* effective user id */
#define u_gid   u_cred->cr_gid          /* effective group id */

/* 1.2 - memory management */
       segsz_t u_tsize;                /* text size (clicks) */
       segsz_t u_dsize;                /* data size (clicks) */
       segsz_t u_ssize;                /* stack size (clicks) */
       struct  dmap u_dmap;            /* disk map for data segment */
       struct  dmap u_smap;            /* disk map for stack segment */
       struct  dmap u_cdmap;           /* temp data segment disk map */
       struct  dmap u_csmap;           /* temp stack segment disk map */
       label_t u_ssave;                /* label variable for swapping */
       segsz_t u_odsize, u_ossize;     /* for (clumsy) expansion swaps */
       time_t  u_outime;               /* user time at last sample */
       struct  mapmem *u_mmap;         /* list of mapped memory regions */

/* 1.3 - signal management */
       sig_t   u_signal[NSIG];         /* disposition of signals */
       int     u_sigmask[NSIG];        /* signals to be blocked */
       int     u_sigonstack;           /* signals to take on sigstack */
       int     u_sigintr;              /* signals that interrupt syscalls */
       int     u_oldmask;              /* saved mask from before sigpause */
       struct  sigstack u_sigstack;    /* sp & on stack state variable */
#define u_onstack       u_sigstack.ss_onstack
#define u_sigsp         u_sigstack.ss_sp
       int     u_sig;                  /* for core dump/debugger XXX */
       int     u_code;                 /* for core dump/debugger XXX */

/* 1.4 - descriptor management */
       struct  file *u_ofile[NOFILE];  /* file structures for open files */
       char    u_pofile[NOFILE];       /* per-process flags of open files */
       int     u_lastfile;             /* high-water mark of u_ofile */
#define UF_EXCLOSE      0x1             /* auto-close on exec */
#define UF_MAPPED       0x2             /* mapped from device */
#define u_cdir u_nd.ni_cdir             /* current directory */
#define u_rdir u_nd.ni_rdir             /* root directory of current process */
       short   u_cmask;                /* mask for file creation */

/* 1.5 - timing and statistics */
       struct  rusage u_ru;            /* stats for this proc */
       struct  rusage u_cru;           /* sum of stats for reaped children */
       struct  itimerval u_timer[3];
       struct  timeval u_start;
       short   u_acflag;

       struct uprof {                  /* profile arguments */
               short   *pr_base;       /* buffer base */
               unsigned pr_size;       /* buffer size */
               unsigned pr_off;        /* pc offset */
               unsigned pr_scale;      /* pc scaling */
       } u_prof;

/* 1.6 - resource controls */
       struct  rlimit u_rlimit[RLIM_NLIMITS];

/* namei & co. */
       struct  nameidata u_nd;

       long    u_spare[8];
       int     u_stack[1];
};

/* u_error codes */
#ifdef KERNEL
#include "errno.h"
#else
#include <errno.h>
#endif

#ifdef KERNEL
extern  struct user u;
extern  struct user swaputl;
extern  struct user forkutl;
extern  struct user xswaputl;
extern  struct user xswap2utl;
extern  struct user pushutl;
extern  struct user vfutl;
#endif