temporary hack until real credentials

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

/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
*      @(#)user.h      7.3 (Berkeley) %G%
*/

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

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

#define MAXCOMLEN       16              /* <= MAXNAMLEN, >= sizeof(ac_comm) */

struct  user {
       struct  pcb u_pcb;
       struct  proc *u_procp;          /* pointer to proc structure */
       int     *u_ar0;                 /* address of users saved R0 */
       char    u_comm[MAXCOMLEN + 1];

/* syscall parameters, results and catches */
       int     u_arg[8];               /* arguments to current system call */
       int     *u_ap;                  /* pointer to arglist */
       label_t u_qsave;                /* for non-local gotos on interrupts */
       union {                         /* syscall return values */
               struct  {
                       int     R_val1;
                       int     R_val2;
               } u_rv;
#define r_val1  u_rv.R_val1
#define r_val2  u_rv.R_val2
               off_t   r_off;
               time_t  r_time;
       } u_r;
       char    u_error;                /* return error code */
       char    u_eosys;                /* special action on end of syscall */

/* 1.1 - processes and protection */
       uid_t   u_uid;                  /* effective user id */
       uid_t   u_ruid;                 /* real user id */
       gid_t   u_gid;                  /* effective group id */
       gid_t   u_rgid;                 /* real group id */
       gid_t   u_groups[NGROUPS];      /* groups, 0 terminated */
#define u_cred u_uid

/* 1.2 - memory management */
       size_t  u_tsize;                /* text size (clicks) */
       size_t  u_dsize;                /* data size (clicks) */
       size_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, u_csmap;  /* shadows of u_dmap, u_smap, for
                                          use of parent during fork */
       label_t u_ssave;                /* label variable for swapping */
       size_t  u_odsize, u_ossize;     /* for (clumsy) expansion swaps */
       time_t  u_outime;               /* user time at last sample */

/* 1.3 - signal management */
       int     (*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 */
       int     u_code;                 /* ``code'' to trap */
       struct  sigstack u_sigstack;    /* sp & on stack state variable */
#define u_onstack       u_sigstack.ss_onstack
#define u_sigsp         u_sigstack.ss_sp

/* 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 */
       struct  inode *u_cdir;          /* current directory */
       struct  inode *u_rdir;          /* root directory of current process */
       struct  tty *u_ttyp;            /* controlling tty pointer */
       dev_t   u_ttyd;                 /* controlling tty dev */
       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];
       int     u_XXX[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];
       struct  quota *u_quota;         /* user's quota structure */
       int     u_qflags;               /* per process quota flags */

/* namei & co. */
       struct nameicache {             /* last successful directory search */
               int nc_prevoffset;      /* offset at which last entry found */
               ino_t nc_inumber;       /* inum of cached directory */
               dev_t nc_dev;           /* dev of cached directory */
               time_t nc_time;         /* time stamp for cache entry */
       } u_ncache;
       struct  nameidata u_nd;

       int     u_stack[1];
};

/* u_eosys values */
#define JUSTRETURN      1
#define RESTARTSYS      2
#define NORMALRETURN    3

/* 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