Bell 32V development

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

#include <sys/pcb.h>
/*
* 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 USIZE*512 bytes
* long; resides at virtual kernel
* loc 80020000; contains the system
* stack per user; is cross referenced
* with the proc structure for the
* same process.
*/

#define EXCLOSE 01

struct  user
{
       struct pcb u_pcb;               /* pcb, save area when exchanging stacks */
       int u_ptable[(MAXUMEM+127)/128];        /* click nums of user page table */
       label_t u_rsav;
       char    u_segflg;               /* IO flag: 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;
               };
               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 */
       int     u_arg[5];               /* arguments to current system call */
       unsigned u_tsize;               /* text size (clicks) */
       unsigned u_dsize;               /* data size (clicks) */
       unsigned u_ssize;               /* stack size (clicks) */
       label_t u_qsav;                 /* label variable for quits and interrupts */
       label_t u_ssav;                 /* label variable for swapping */
       int     u_signal[NSIG];         /* disposition of signals */
       time_t  u_utime;                /* this process user time */
       time_t  u_stime;                /* this process system time */
       time_t  u_cutime;               /* sum of childs' utimes */
       time_t  u_cstime;               /* sum of childs' stimes */
       int     *u_ar0;                 /* address of users saved R0 */
       struct {                        /* 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_intflg;               /* catch intr from sys */
       char    u_sep;                  /* flag for I and D separation */
       struct tty *u_ttyp;             /* controlling tty pointer */
       dev_t   u_ttyd;                 /* controlling tty dev */
       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;
       } u_exdata;
       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 */
       int     u_stack[1];
                                       /* kernel stack per user
                                        * extends from u + USIZE*64
                                        * backward not to reah here
                                        */
};


/* u_error codes */
#define EPERM   1
#define ENOENT  2
#define ESRCH   3
#define EINTR   4
#define EIO     5
#define ENXIO   6
#define E2BIG   7
#define ENOEXEC 8
#define EBADF   9
#define ECHILD  10
#define EAGAIN  11
#define ENOMEM  12
#define EACCES  13
#define EFAULT  14
#define ENOTBLK 15
#define EBUSY   16
#define EEXIST  17
#define EXDEV   18
#define ENODEV  19
#define ENOTDIR 20
#define EISDIR  21
#define EINVAL  22
#define ENFILE  23
#define EMFILE  24
#define ENOTTY  25
#define ETXTBSY 26
#define EFBIG   27
#define ENOSPC  28
#define ESPIPE  29
#define EROFS   30
#define EMLINK  31
#define EPIPE   32
#define EDOM    33
#define ERANGE  34