/* @(#)proc.h 13.7 (RC International) 91/10/09 */ /* * proc.h -- memory-resident user process information * * One structure allocated per active process. It contains all data * needed about the process while the process may be swapped out. * Other per process data (user.h) is swapped with the process. * * P_link usage depends on p_stat: if SRUN, p_link is forward link * for hash list of runnable procs; if pstat == SSLEEP or SSTOP, p_link * is the hash chain links for procs on slpque. */ #if defined(LANGUAGE_C) #include struct proc { struct proc *p_link; /* linked list of running procs (see above) */ struct proc *p_rlink; /* back link for hash list of runnable procs */ char p_processor; /* [TX] which processor (used by txqueue.c) */ char p_runerr; /* [TX] error code from child doing run() */ short p_swload; /* [TX] swapload lock/count */ struct proc *p_txqlink; /* [TX] for waiting in txqueues or semaphores */ struct txqueue *p_q; /* [TX] txqueue on which we are waiting */ struct pte *p_addr; /* u-area kernel map address */ int p_tlbpid; /* tlb context of this proc */ struct tlbinfo *p_tlbinfo; /* per process tlb mappings */ int p_tlbindx; /* index of next wired tlb entry to use */ struct shmat_ds *p_shmlist; /* [sysv] shm segment attach descriptors */ u_char p_usrpri; /* user-priority based on p_cpu and p_nice */ u_char p_pri; /* priority, negative is high */ u_char p_cpu; /* cpu usage for scheduling */ char p_stat; /* process status (SSLEEP, etc. below) */ u_char p_time; /* resident time for scheduling */ u_char p_nice; /* nice for cpu usage */ u_char p_slptime; /* time since last block */ u_char p_cursig; /* signal now being handled */ int p_sig; /* signals pending to this process */ int p_sigmask; /* current signal mask */ int p_sigignore; /* signals being ignored */ int p_sigcatch; /* signals being caught by user */ int p_flag; /* process flags (SLOAD, etc. below) */ pid_t p_pgrp; /* name of process group leader */ pid_t p_pid; /* unique process id */ pid_t p_ppid; /* process id of parent*/ struct pid_s *p_pidp; /* ptr to process ID info */ struct pid_s *p_pgidp; /* prt to process group ID info */ struct proc *p_pglink; /* head of process group chain */ struct sess *p_sessp; /* session information */ UID_T p_subpu; /* uid of associated subpu */ u_short p_xstat; /* exit status for wait */ short p_code; /* [TX] code for SIGTRANS */ short p_abocode; /* [TX] code for SIGABORT */ short p_errcode; /* [TX] code for SIGERR */ struct trans_req *p_transmsg; /* [TX] sigtrans message */ struct trans_req *p_abortmsg; /* [TX] sigabort message */ struct rusage *p_ru; /* mbuf holding exit information */ long p_textstart; /* starting address of user text */ long p_datastart; /* starting address of user data */ short p_poip; /* page outs in progress */ short p_textpt; /* copy of text page table size */ short p_datapt; /* copy of data page table size */ short p_stakpt; /* copy of stack page table size */ size_t p_tsize; /* size of text (clicks) */ size_t p_dsize; /* size of data space (clicks) */ size_t p_ssize; /* copy of stack size (clicks) */ size_t p_rssize; /* current resident set size in clicks */ size_t p_maxrss; /* copy of u.u_limit[MAXRSS] */ size_t p_swrss; /* resident set size before last swap */ swblk_t p_swaddr; /* disk address of u area when swapped */ caddr_t p_wchan; /* event process is awaiting */ struct text *p_textp; /* pointer to text structure */ struct pte *p_textbr; /* text page table base */ struct pte *p_databr; /* data page table base */ struct pte *p_stakbr; /* stack page table base */ struct proc *p_xlink; /* linked list of procs sharing same text */ short p_uid; /* effective user id for process management */ short p_ruid; /* real user id for process management */ short p_cpticks; /* ticks of cpu time */ long p_pctcpu; /* cpu fraction for this proc during p_time * multiplied by "avenscale" (was a float) */ short p_suid; /* saved euid (for SysV compat) */ short p_sgid; /* saved egid (for SysV compat) */ short p_mflags; /* more process flags (se below) */ short p_fp; /* generate SIGFPE on all fp interrupts - MIPS*/ short p_ndx; /* proc index for memall (because of vfork) */ short p_idhash; /* hashed based on p_pid for kill+exit+... */ struct proc *p_pptr; /* pointer to process structure of parent */ struct proc *p_child; /* pointer to first child process */ struct proc *p_sibling; /* pointer to next sibling process */ struct itimerval p_realtimer; /* real time interval timer struct */ struct quota *p_quota; /* quotas for this process */ u_int p_smbeg; /* [sysv] virtual pg # of shm base */ u_int p_smend; /* [sysv] virtual pg # after shm end */ struct uid_queue *p_myq; /* [TX] for waiting for synchronous events */ struct uid_queue *p_asyncq; /* [TX] for receiving asynchronous events */ int p_sigdebug; /* [TX] mask of signals NOT given to debugger */ char *p_debugstate; /* [TX] debugger state for process */ short p_last_breakhit;/* [TX] last breakpoint hit for process */ short p_proceed_count;/* [TX] step/continue remaining count */ char p_sstep; /* [TX] single step flag */ UID_T p_debuguid; /* [TX] uid of async_q of debugger process */ struct rp_rproc *p_rkids; /* [TX] remote children list */ struct inode *p_otty; /* [TX] control terminal inode pointer */ short p_shmcnt; /* [sysv] numbers of attached shm segments */ short p_syscalltime; /* syscall to be timed (hackers junk)! */ int p_unused; /* WAS : last syscall no */ int *p_syscallstat; /* syscall stat array (hackers junk)! */ }; /* process ID info */ struct pid_s { unsigned int pid_prinactive :1; unsigned int pid_pgorphaned :1; unsigned int pid_ref :6; unsigned int pid_prslot :24; pid_t pid_id; struct proc *pid_pglink; struct pid_s *pid_link; }; #endif defined(LANGUAGE_C) /* stat codes */ #define SNULL 0 /* nothing doing */ #define SSLEEP 1 /* awaiting an event */ #define SWAIT 2 /* (abandoned state) */ #define SRUN 3 /* running/want to run (might not be loaded)*/ #define SIDL 4 /* intermediate state in process creation */ #define SZOMB 5 /* intermediate state in process termination */ #define SSTOP 6 /* process being traced */ /* flag codes */ #define SLOAD 0x00000001 /* in core */ #define SSYS 0x00000002 /* swapper or pager process */ #define SLOCK 0x00000004 /* process being swapped out */ #define SSWAP 0x00000008 /* save area flag */ #define STRC 0x00000010 /* process is being traced */ #define SWTED 0x00000020 /* stopped&traced proc has been wait()'ed for */ #define SULOCK 0x00000040 /* user settable lock in core */ #define SPAGE 0x00000080 /* process in page wait state */ #define SKEEP 0x00000100 /* another flag to prevent swap out */ #define SOMASK 0x00000200 /* restore old mask after taking signal */ #define SWEXIT 0x00000400 /* working on exiting */ #define SPHYSIO 0x00000800 /* doing physical i/o (bio.c) */ #define SVFORK 0x00001000 /* process resulted from vfork() */ #define SVFDONE 0x00002000 /* another vfork flag */ #define SNOVM 0x00004000 /* no vm, parent in a vfork() */ #define SPAGI 0x00008000 /* init data space on demand, from inode */ #define SSEQL 0x00010000 /* user warned of sequential vm behavior */ #define SUANOM 0x00020000 /* user warned of random vm behavior */ #define STIMO 0x00040000 /* timing out during sleep */ /* was SDETACH */ #define SNEWDBG 0x00080000 /* process wants to trap for new debugger */ /* was SOUSIG */ #define SPTTY 0x00100000 /* p_tty being inititalize by this process */ #define SOWEUPC 0x00200000 /* owe process an addupc() call at next ast */ #define SSEL 0x00400000 /* selecting; wakeup/waiting danger */ /* was SLOGIN */ #define SRETIRE 0x00800000 /* waiting in retire */ #define SPTECHG 0x01000000 /* pte's for process have changed */ #define SSHRINK 0x02000000 /* vm shrinking, cannot swapload */ /* was SITRC */ #define SRUNPCR 0x04000000 /* process being created via run() */ #define SBREAKX 0x08000000 /* breakpoint on process exit */ #define SSHMDT 0x10000000 /* shared memory detach in progress */ #define SDBGX 0x20000000 /* brk_exit_process done */ #define SNOWAIT 0x40000000 /* parent exited, nobody waiting for zombie */ #define SFIXADE 0x80000000 /* fixup unalligned address errors - MIPS */ /* mflag codes */ #define MNOSIGCLD 0x00000001 /* do not sent SIGCLD when children stop/continue */ #define SEXECED 0x00000002 /* */ #define SSYSV 0x00000004 /* Using SYSV flavour of system calls */ /* flags for p_fp */ #define P_FP_SIGINTR1 1 #define P_FP_SIGINTR2 2