V9/sys/h/user.h
#ifdef KERNEL
#include "../machine/pcb.h"
#include "../machine/reg.h"
#include "../h/dmap.h"
#include "../h/vtimes.h"
#else
#include <machine/reg.h>
#include <machine/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
#define NOGROUP (short)-1 /* end of group marker */
struct user
{
char u_stack[KERNSTACK]; /* the kernel stack */
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 */
short u_groups[NGROUPS]; /* access group id array */
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 MMAPPED 02 /* fd used to mmap memory */
label_t u_ssav; /* label variable for swapping */
int (*u_signal[NSIG])(); /* disposition of signals */
int u_code; /* ``code'' to trap */
/* on SIGILL code passes compatibility mode fault address */
/* on SIGFPE code passes more specific kind of floating point fault */
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 */
dev_t u_ttydev; /* dev,ino of controlling tty */
ino_t u_ttyino;
union {
struct { /* header of executable file */
#ifdef sun
unsigned short Ux_mach; /* machine type */
unsigned short Ux_mag; /* magic number */
#else
unsigned Ux_mag; /* magic number */
#endif
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;
#ifdef sun
#define ux_mach Ux_A.Ux_mach
#define M_OLDSUN2 0 /* old sun-2 executable files */
#define M_68010 1 /* runs on either 68010 or 68020 */
#define M_68020 2 /* runs only on 68020 */
#define OMAGIC 0407 /* old impure format */
#define NMAGIC 0410 /* read-only text */
#define ZMAGIC 0413 /* demand load format */
#endif
#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 */
int u_limit[8]; /* see <sys/vlimit.h> */
int u_nbadio; /* # IO operations on hungup streams */
char u_logname[8]; /* login name */
#ifdef sun
int u_lofault; /* catch faults in locore.s */
struct hole { /* a data space hole (no swap space) */
int uh_first; /* first data page in hole */
int uh_last; /* last data page in hole */
} u_hole;
/* sun2 only */
int u_memropc[12]; /* state of ropc */
struct skyctx {
u_int usc_regs[8]; /* the Sky registers */
short usc_cmd; /* current command */
short usc_used; /* user is using Sky */
} u_skyctx;
/* end sun2 only */
/* 68020/68881 only */
struct fp_status u_fp_status; /* user visible fpp state */
struct fp_istate u_fp_istate; /* internal fpp state */
/* end 68020/68881 only */
/* 68020/fpa only */
struct fpa_istate u_fpa_istate; /* supervisor privilege regs */
struct fpa_status u_fpa_status; /* user privilege regs */
/* end 68020/fpa only */
#endif sun
};
/* u_eosys values */
#define JUSTRETURN 0
#define RESTARTSYS 1
#define SIMULATERTI 2
#define REALLYRETURN 3
/* u_error codes */
#ifdef KERNEL
#include "../h/errno.h"
#else
#include <errno.h>
#endif
#ifdef KERNEL
#ifdef sun
#define u (*(struct user *)UADDR)
#else sun
extern struct user u;
#endif sun
extern struct user swaputl;
extern struct user forkutl;
extern struct user xswaputl;
extern struct user xswap2utl;
extern struct user pushutl;
extern struct user vfutl;
extern struct user prusrutl;
#endif