/* * 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 7.1 (Berkeley) 6/4/86 */ /* * RCS Info * $Header: user.h,v 3.1 86/10/22 13:29:59 tadl Exp $ * $Locker: $ */ #ifdef KERNEL #include "../machine/pcb.h" #include "dmap.h" #include "time.h" #include "resource.h" #else #include <machine/pcb.h> #include <sys/dmap.h> #include <sys/time.h> #include <sys/resource.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 */ struct ucred *u_cred; /* user credentials (uid, gid, etc) */ #define u_uid u_cred->cr_uid #define u_gid u_cred->cr_gid #define u_groups u_cred->cr_groups #define u_ruid u_cred->cr_ruid #define u_rgid u_cred->cr_rgid /* 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 vnode *u_cdir; /* current directory */ struct vnode *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 */ int u_stack[1]; }; struct ucred { u_short cr_ref; /* reference count */ uid_t cr_uid; /* effective user id */ gid_t cr_gid; /* effective group id */ gid_t cr_groups[NGROUPS]; /* groups, 0 terminated */ uid_t cr_ruid; /* real user id */ gid_t cr_rgid; /* real group id */ }; #ifdef KERNEL #define crhold(cr) (cr)->cr_ref++ struct ucred *crget(); struct ucred *crcopy(); struct ucred *crdup(); #endif KERNEL /* 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