File: [local] / sys / sys / proc.h (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:16:12 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: proc.h,v 1.100 2007/07/25 23:11:53 art Exp $ */
/* $NetBSD: proc.h,v 1.44 1996/04/22 01:23:21 christos Exp $ */
/*-
* Copyright (c) 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)proc.h 8.8 (Berkeley) 1/21/94
*/
#ifndef _SYS_PROC_H_
#define _SYS_PROC_H_
#include <machine/proc.h> /* Machine-dependent proc substruct. */
#include <sys/selinfo.h> /* For struct selinfo. */
#include <sys/queue.h>
#include <sys/timeout.h> /* For struct timeout. */
#include <sys/event.h> /* For struct klist */
#include <machine/atomic.h>
#define curproc curcpu()->ci_curproc
#ifdef _KERNEL
#define __need_process
#endif
/*
* One structure allocated per session.
*/
struct session {
int s_count; /* Ref cnt; pgrps in session. */
struct proc *s_leader; /* Session leader. */
struct vnode *s_ttyvp; /* Vnode of controlling terminal. */
struct tty *s_ttyp; /* Controlling terminal. */
char s_login[MAXLOGNAME]; /* Setlogin() name. */
};
/*
* One structure allocated per process group.
*/
struct pgrp {
LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */
LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members. */
struct session *pg_session; /* Pointer to session. */
pid_t pg_id; /* Pgrp id. */
int pg_jobc; /* # procs qualifying pgrp for job control */
};
/*
* One structure allocated per emulation.
*/
struct exec_package;
struct ps_strings;
struct uvm_object;
union sigval;
struct emul {
char e_name[8]; /* Symbolic name */
int *e_errno; /* Errno array */
/* Signal sending function */
void (*e_sendsig)(sig_t, int, int, u_long, int, union sigval);
int e_nosys; /* Offset of the nosys() syscall */
int e_nsysent; /* Number of system call entries */
struct sysent *e_sysent; /* System call array */
char **e_syscallnames; /* System call name array */
int e_arglen; /* Extra argument size in words */
/* Copy arguments on the stack */
void *(*e_copyargs)(struct exec_package *, struct ps_strings *,
void *, void *);
/* Set registers before execution */
void (*e_setregs)(struct proc *, struct exec_package *,
u_long, register_t *);
int (*e_fixup)(struct proc *, struct exec_package *);
char *e_sigcode; /* Start of sigcode */
char *e_esigcode; /* End of sigcode */
int e_flags; /* Flags, see below */
struct uvm_object *e_sigobject; /* shared sigcode object */
/* Per-process hooks */
void (*e_proc_exec)(struct proc *, struct exec_package *);
void (*e_proc_fork)(struct proc *p, struct proc *parent);
void (*e_proc_exit)(struct proc *);
};
/* Flags for e_flags */
#define EMUL_ENABLED 0x0001 /* Allow exec to continue */
#define EMUL_NATIVE 0x0002 /* Always enabled */
extern struct emul *emulsw[]; /* All emuls in system */
extern int nemuls; /* Number of emuls */
/*
* Description of a process.
*
* These structures contain the information needed to manage a thread of
* control, known in UN*X as a process; it has references to substructures
* containing descriptions of things that the process uses, but may share
* with related processes.
*
* struct process is the higher level process containing information
* shared by all threads in a process, while struct proc contains the
* run-time information needed by threads.
*/
#ifdef __need_process
struct process {
/*
* ps_mainproc is the main thread in the process.
* Ultimately, we shouldn't need that, threads should be able to exit
* at will. Unfortunately until the pid is moved into struct process
* we'll have to remember the main threads and abuse its pid as the
* the pid of the process. This is gross, but considering the horrible
* pid semantics we have right now, it's unavoidable.
*/
struct proc *ps_mainproc;
struct pcred *ps_cred; /* Process owner's identity. */
struct plimit *ps_limit; /* Process limits. */
TAILQ_HEAD(,proc) ps_threads; /* Threads in this process. */
};
#else
struct process;
#endif
struct proc {
struct proc *p_forw; /* Doubly-linked run/sleep queue. */
struct proc *p_back;
LIST_ENTRY(proc) p_list; /* List of all processes. */
struct process *p_p; /* The process of this thread. */
TAILQ_ENTRY(proc) p_thr_link;/* Threads in a process linkage. */
/* substructures: */
struct filedesc *p_fd; /* Ptr to open files structure. */
struct pstats *p_stats; /* Accounting/statistics */
struct vmspace *p_vmspace; /* Address space. */
struct sigacts *p_sigacts; /* Signal actions, state */
#define p_cred p_p->ps_cred
#define p_ucred p_cred->pc_ucred
#define p_rlimit p_p->ps_limit->pl_rlimit
int p_exitsig; /* Signal to send to parent on exit. */
int p_flag; /* P_* flags. */
u_char p_os; /* OS tag */
char p_stat; /* S* process status. */
char p_pad1[1];
u_char p_descfd; /* if not 255, fdesc permits this fd */
pid_t p_pid; /* Process identifier. */
LIST_ENTRY(proc) p_hash; /* Hash chain. */
LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */
struct proc *p_pptr; /* Pointer to parent process. */
LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */
LIST_HEAD(, proc) p_children; /* Pointer to list of children. */
/* The following fields are all zeroed upon creation in fork. */
#define p_startzero p_oppid
pid_t p_oppid; /* Save parent pid during ptrace. XXX */
int p_dupfd; /* Sideways return value from filedescopen. XXX */
long p_thrslpid; /* for thrsleep syscall */
/* scheduling */
u_int p_estcpu; /* Time averaged value of p_cpticks. */
int p_cpticks; /* Ticks of cpu time. */
fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */
void *p_wchan; /* Sleep address. */
struct timeout p_sleep_to;/* timeout for tsleep() */
const char *p_wmesg; /* Reason for sleep. */
u_int p_swtime; /* Time swapped in or out. */
u_int p_slptime; /* Time since last blocked. */
struct cpu_info * __volatile p_cpu; /* CPU we're running on. */
struct itimerval p_realtimer; /* Alarm timer. */
struct timeout p_realit_to; /* Alarm timeout. */
struct timeval p_rtime; /* Real time. */
u_quad_t p_uticks; /* Statclock hits in user mode. */
u_quad_t p_sticks; /* Statclock hits in system mode. */
u_quad_t p_iticks; /* Statclock hits processing intr. */
int p_traceflag; /* Kernel trace points. */
struct vnode *p_tracep; /* Trace to vnode. */
void *p_systrace; /* Back pointer to systrace */
int p_ptmask; /* Ptrace event mask */
struct ptrace_state *p_ptstat; /* Ptrace state */
int p_siglist; /* Signals arrived but not delivered. */
struct vnode *p_textvp; /* Vnode of executable. */
struct emul *p_emul; /* Emulation information */
void *p_emuldata; /* Per-process emulation data, or */
/* NULL. Malloc type M_EMULDATA */
struct klist p_klist; /* knotes attached to this process */
/* pad to 256, avoid shifting eproc. */
sigset_t p_sigdivert; /* Signals to be diverted to thread. */
/* End area that is zeroed on creation. */
#define p_endzero p_startcopy
/* The following fields are all copied upon creation in fork. */
#define p_startcopy p_sigmask
sigset_t p_sigmask; /* Current signal mask. */
sigset_t p_sigignore; /* Signals being ignored. */
sigset_t p_sigcatch; /* Signals being caught by user. */
u_char p_priority; /* Process priority. */
u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */
char p_nice; /* Process "nice" value. */
char p_comm[MAXCOMLEN+1];
struct pgrp *p_pgrp; /* Pointer to process group. */
vaddr_t p_sigcode; /* user pointer to the signal code. */
/* End area that is copied on creation. */
#define p_endcopy p_addr
struct user *p_addr; /* Kernel virtual addr of u-area */
struct mdproc p_md; /* Any machine-dependent fields. */
u_short p_xstat; /* Exit status for wait; also stop signal. */
u_short p_acflag; /* Accounting flags. */
struct rusage *p_ru; /* Exit information. XXX */
};
#define p_session p_pgrp->pg_session
#define p_pgid p_pgrp->pg_id
/* Status values. */
#define SIDL 1 /* Process being created by fork. */
#define SRUN 2 /* Currently runnable. */
#define SSLEEP 3 /* Sleeping on an address. */
#define SSTOP 4 /* Process debugging or suspension. */
#define SZOMB 5 /* Awaiting collection by parent. */
#define SDEAD 6 /* Process is almost a zombie. */
#define SONPROC 7 /* Process is currently on a CPU. */
#define P_ZOMBIE(p) ((p)->p_stat == SZOMB || (p)->p_stat == SDEAD)
/* These flags are kept in p_flag. */
#define P_ADVLOCK 0x000001 /* Proc may hold a POSIX adv. lock. */
#define P_CONTROLT 0x000002 /* Has a controlling terminal. */
#define P_INMEM 0x000004 /* Loaded into memory. UNUSED */
#define P_NOCLDSTOP 0x000008 /* No SIGCHLD when children stop. */
#define P_PPWAIT 0x000010 /* Parent waits for child exec/exit. */
#define P_PROFIL 0x000020 /* Has started profiling. */
#define P_SELECT 0x000040 /* Selecting; wakeup/waiting danger. */
#define P_SINTR 0x000080 /* Sleep is interruptible. */
#define P_SUGID 0x000100 /* Had set id privs since last exec. */
#define P_SYSTEM 0x000200 /* No sigs, stats or swapping. */
#define P_TIMEOUT 0x000400 /* Timing out during sleep. */
#define P_TRACED 0x000800 /* Debugged process being traced. */
#define P_WAITED 0x001000 /* Debugging proc has waited for child. */
/* XXX - Should be merged with INEXEC */
#define P_WEXIT 0x002000 /* Working on exiting. */
#define P_EXEC 0x004000 /* Process called exec. */
/* Should be moved to machine-dependent areas. */
#define P_OWEUPC 0x008000 /* Owe proc an addupc() at next ast. */
/* XXX Not sure what to do with these, yet. */
#define P_SSTEP 0x020000 /* proc needs single-step fixup ??? */
#define P_SUGIDEXEC 0x040000 /* last execve() was set[ug]id */
#define P_NOCLDWAIT 0x080000 /* Let pid 1 wait for my children */
#define P_NOZOMBIE 0x100000 /* Pid 1 waits for me instead of dad */
#define P_INEXEC 0x200000 /* Process is doing an exec right now */
#define P_SYSTRACE 0x400000 /* Process system call tracing active*/
#define P_CONTINUED 0x800000 /* Proc has continued from a stopped state. */
#define P_BIGLOCK 0x2000000 /* Process needs kernel "big lock" to run */
#define P_THREAD 0x4000000 /* Only a thread, not a real process */
#define P_IGNEXITRV 0x8000000 /* For thread kills */
#define P_SOFTDEP 0x10000000 /* Stuck processing softdep worklist */
#define P_STOPPED 0x20000000 /* Just stopped. */
#define P_BITS \
("\20\01ADVLOCK\02CTTY\04NOCLDSTOP\05PPWAIT\06PROFIL\07SELECT" \
"\010SINTR\011SUGID\012SYSTEM\013TIMEOUT\014TRACED\015WAITED\016WEXIT" \
"\017EXEC\020PWEUPC\022SSTEP\023SUGIDEXEC\024NOCLDWAIT" \
"\025NOZOMBIE\026INEXEC\027SYSTRACE\030CONTINUED\032BIGLOCK" \
"\033THREAD\034IGNEXITRV\035SOFTDEP\036STOPPED")
/* Macro to compute the exit signal to be delivered. */
#define P_EXITSIG(p) \
(((p)->p_flag & P_TRACED) ? SIGCHLD : (p)->p_exitsig)
/*
* MOVE TO ucred.h?
*
* Shareable process credentials (always resident). This includes a reference
* to the current user credentials as well as real and saved ids that may be
* used to change ids.
*/
struct pcred {
struct ucred *pc_ucred; /* Current credentials. */
uid_t p_ruid; /* Real user id. */
uid_t p_svuid; /* Saved effective user id. */
gid_t p_rgid; /* Real group id. */
gid_t p_svgid; /* Saved effective group id. */
int p_refcnt; /* Number of references. */
};
#ifdef _KERNEL
struct uidinfo {
LIST_ENTRY(uidinfo) ui_hash;
uid_t ui_uid;
long ui_proccnt; /* proc structs */
long ui_lockcnt; /* lockf structs */
};
struct uidinfo *uid_find(uid_t);
/*
* We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t,
* as it is used to represent "no process group".
* We set PID_MAX to (SHRT_MAX - 1) so we don't break sys/compat.
*/
#define PID_MAX 32766
#define NO_PID (PID_MAX+1)
#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
#define SESSHOLD(s) ((s)->s_count++)
#define SESSRELE(s) { \
if (--(s)->s_count == 0) \
pool_put(&session_pool, s); \
}
/*
* Flags to fork1().
*/
#define FORK_FORK 0x00000001
#define FORK_VFORK 0x00000002
#define FORK_RFORK 0x00000004
#define FORK_PPWAIT 0x00000008
#define FORK_SHAREFILES 0x00000010
#define FORK_CLEANFILES 0x00000020
#define FORK_NOZOMBIE 0x00000040
#define FORK_SHAREVM 0x00000080
#define FORK_SIGHAND 0x00000200
#define FORK_PTRACE 0x00000400
#define FORK_THREAD 0x00000800
#define EXIT_NORMAL 0x00000001
#define EXIT_THREAD 0x00000002
#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash])
extern LIST_HEAD(pidhashhead, proc) *pidhashtbl;
extern u_long pidhash;
#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash])
extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
extern u_long pgrphash;
extern struct proc proc0; /* Process slot for swapper. */
extern int nprocs, maxproc; /* Current and max number of procs. */
extern int randompid; /* fork() should create random pid's */
LIST_HEAD(proclist, proc);
extern struct proclist allproc; /* List of all processes. */
extern struct proclist zombproc; /* List of zombie processes. */
extern struct proc *initproc; /* Process slots for init, pager. */
extern struct proc *syncerproc; /* filesystem syncer daemon */
extern struct pool process_pool; /* memory pool for processes */
extern struct pool proc_pool; /* memory pool for procs */
extern struct pool rusage_pool; /* memory pool for zombies */
extern struct pool ucred_pool; /* memory pool for ucreds */
extern struct pool session_pool; /* memory pool for sessions */
extern struct pool pcred_pool; /* memory pool for pcreds */
#define NQS 32 /* 32 run queues. */
extern int whichqs; /* Bit mask summary of non-empty Q's. */
struct prochd {
struct proc *ph_link; /* Linked list of running processes. */
struct proc *ph_rlink;
};
extern struct prochd qs[NQS];
struct simplelock;
struct proc *pfind(pid_t); /* Find process by id. */
struct pgrp *pgfind(pid_t); /* Find process group by id. */
void proc_printit(struct proc *p, const char *modif,
int (*pr)(const char *, ...));
int chgproccnt(uid_t uid, int diff);
int enterpgrp(struct proc *p, pid_t pgid, int mksess);
void fixjobc(struct proc *p, struct pgrp *pgrp, int entering);
int inferior(struct proc *p);
int leavepgrp(struct proc *p);
void yield(void);
void preempt(struct proc *);
void mi_switch(void);
void pgdelete(struct pgrp *pgrp);
void procinit(void);
#if !defined(remrunqueue)
void remrunqueue(struct proc *);
#endif
void resetpriority(struct proc *);
void setrunnable(struct proc *);
#if !defined(setrunqueue)
void setrunqueue(struct proc *);
#endif
void unsleep(struct proc *);
void wakeup_n(void *chan, int);
void wakeup(void *chan);
#define wakeup_one(c) wakeup_n((c), 1)
void reaper(void);
void exit1(struct proc *, int, int);
void exit2(struct proc *);
int fork1(struct proc *, int, int, void *, size_t, void (*)(void *),
void *, register_t *, struct proc **);
void rqinit(void);
int groupmember(gid_t, struct ucred *);
#if !defined(cpu_switch)
void cpu_switch(struct proc *);
#endif
#if !defined(cpu_wait)
void cpu_wait(struct proc *);
#endif
void cpu_exit(struct proc *);
void child_return(void *);
int proc_cansugid(struct proc *);
void proc_zap(struct proc *);
struct sleep_state {
int sls_s;
int sls_catch;
int sls_do_sleep;
int sls_sig;
};
void sleep_setup(struct sleep_state *, void *, int, const char *);
void sleep_setup_timeout(struct sleep_state *, int);
void sleep_setup_signal(struct sleep_state *, int);
void sleep_finish(struct sleep_state *, int);
int sleep_finish_timeout(struct sleep_state *);
int sleep_finish_signal(struct sleep_state *);
int tsleep(void *, int, const char *, int);
#define ltsleep(c, p, w, t, l) tsleep(c, p, w, t)
#if defined(MULTIPROCESSOR)
void proc_trampoline_mp(void); /* XXX */
#endif
int proc_isunder(struct proc *, struct proc *);
#endif /* _KERNEL */
#endif /* !_SYS_PROC_H_ */