added EXCLOSE, ISPORT

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

/*      user.h  4.3     %G%     */

#ifdef KERNEL
#include "../h/pcb.h"
#include "../h/dmap.h"
#include "../h/vtimes.h"
#ifdef FASTVAX
asm(".set U_ARG,120");
asm(".set U_QSAV,140");
#endif
#else
#include <sys/pcb.h>
#include <sys/dmap.h>
#include <sys/vtimes.h>
#endif
/*
* The user structure.
* One allocated per process.
* Contains all per process data
* that doesn't need to be referenced
* while the process is swapped.
* The user block is UPAGES*NBPG bytes
* long; resides at virtual user
* loc 0x80000000-UPAGES*NBPG; contains the system
* stack per user; is cross referenced
* with the proc structure for the
* same process.
*/

#define SHSIZE  32

struct  user
{
       struct  pcb u_pcb;
       int     u_arg[5];               /* arguments to current system call */
       label_t u_qsav;                 /* for non-local gotos on interrupts */
       char    u_segflg;               /* 0:user D; 1:system; 2:user I */
       char    u_error;                /* return error code */
       short   u_uid;                  /* effective user id */
       short   u_gid;                  /* effective group id */
       short   u_ruid;                 /* real user id */
       short   u_rgid;                 /* real group id */
       struct  proc *u_procp;          /* pointer to proc structure */
       int     *u_ap;                  /* pointer to arglist */
       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;
       caddr_t u_base;                 /* base address for IO */
       unsigned int u_count;           /* bytes remaining for IO */
       off_t   u_offset;               /* offset in file for IO */
       struct  inode *u_cdir;          /* pointer to inode of current directory */
       struct  inode *u_rdir;          /* root directory of current process */
       char    u_dbuf[DIRSIZ];         /* current pathname component */
       caddr_t u_dirp;                 /* pathname pointer */
       struct  direct u_dent;          /* current directory entry */
       struct  inode *u_pdir;          /* inode of parent directory of dirp */
       struct  file *u_ofile[NOFILE];  /* pointers to file structures of open files */
       char    u_pofile[NOFILE];       /* per-process flags of open files */
#define EXCLOSE 01              /* auto-close on exec */
#define ISPORT  02              /* is a port */
       label_t u_ssav;                 /* label variable for swapping */
       int     (*u_signal[NSIG])();    /* disposition of signals */
       int     u_cfcode;               /* ``code'' to trap when CM faulted */
       int     *u_ar0;                 /* address of users saved R0 */
       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;
       char    u_eosys;                /* special action on end of syscall */
       char    u_sep;                  /* flag for I and D separation */
       struct  tty *u_ttyp;            /* controlling tty pointer */
       dev_t   u_ttyd;                 /* controlling tty dev */
       union {
          struct {                     /* header of executable file */
               int     Ux_mag;         /* magic number */
               unsigned Ux_tsize;      /* text size */
               unsigned Ux_dsize;      /* data size */
               unsigned Ux_bsize;      /* bss size */
               unsigned Ux_ssize;      /* symbol table size */
               unsigned Ux_entloc;     /* entry location */
               unsigned Ux_unused;
               unsigned Ux_relflg;
          } Ux_A;
          char ux_shell[SHSIZE];       /* #! and name of interpreter */
       } u_exdata;
#define ux_mag          Ux_A.Ux_mag
#define ux_tsize        Ux_A.Ux_tsize
#define ux_dsize        Ux_A.Ux_dsize
#define ux_bsize        Ux_A.Ux_bsize
#define ux_ssize        Ux_A.Ux_ssize
#define ux_entloc       Ux_A.Ux_entloc
#define ux_unused       Ux_A.Ux_unused
#define ux_relflg       Ux_A.Ux_relflg

       char    u_comm[DIRSIZ];
       time_t  u_start;
       char    u_acflag;
       short   u_fpflag;               /* unused now, will be later */
       short   u_cmask;                /* mask for file creation */
       size_t  u_tsize;                /* text size (clicks) */
       size_t  u_dsize;                /* data size (clicks) */
       size_t  u_ssize;                /* stack size (clicks) */
       struct  vtimes u_vm;            /* stats for this proc */
       struct  vtimes u_cvm;           /* sum of stats for reaped children */
       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 */
       time_t  u_outime;               /* user time at last sample */
       size_t  u_odsize, u_ossize;     /* for (clumsy) expansion swaps */
       size_t  u_vrpages[NOFILE];      /* number vread pages hanging on fd */
       int     u_limit[8];             /* see <sys/limit.h> */
       int     u_stack[1];

                                       /*
                                        * kernel stack per user
                                        * extends from u + UPAGES*512
                                        * backward not to reach here
                                        */
};

/* u_eosys values */
#define JUSTRETURN      0
#define RESTARTSYS      1
#define SIMULATERTI     2

/* u_error codes */
#include <errno.h>

#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