scoutos / prex-0.9.0 / usr / server / proc / proc.h @ 03e9c04a
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/*
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* Copyright (c) 2005-2007, Kohsuke Ohtani
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _PROC_H
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#define _PROC_H
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#include <sys/cdefs.h> |
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#include <sys/param.h> |
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#include <sys/types.h> |
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#include <sys/list.h> |
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#include <ipc/proc.h> |
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#include <ipc/ipc.h> |
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#include <sys/capability.h> |
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#include <unistd.h> |
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#include <stdio.h> |
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#include <assert.h> |
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/* #define DEBUG_PROC 1 */
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#ifdef DEBUG_PROC
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#define DPRINTF(a) dprintf a
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#define ASSERT(e) dassert(e)
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#else
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#define DPRINTF(a)
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#define ASSERT(e)
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#endif
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#define PID_MAX 0x8000 /* max number for PID */ |
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#define ID_MAXBUCKETS 32 |
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#define IDHASH(x) ((x) & (ID_MAXBUCKETS - 1)) |
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struct proc;
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/*
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* Session
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*/
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struct session {
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int s_refcnt; /* reference count */ |
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struct proc *s_leader; /* session leader */ |
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int s_ttyhold; /* true if hold tty */ |
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}; |
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/*
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* Process group
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*/
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struct pgrp {
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struct list pg_link; /* link for pgid hash */ |
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struct list pg_members; /* list head of processes */ |
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struct session *pg_session; /* pointer to session */ |
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pid_t pg_pgid; /* pgrp id */
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}; |
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/*
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* Description of a process
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*/
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struct proc {
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struct list p_link; /* link for all processes */ |
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struct proc *p_parent; /* pointer to parent process */ |
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struct list p_children; /* list head of child processes */ |
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struct list p_sibling; /* link for sibling processes */ |
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struct list p_pid_link; /* link for pid hash */ |
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struct list p_task_link; /* link for task hash */ |
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struct list p_pgrp_link; /* link for process group */ |
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struct pgrp *p_pgrp; /* pointer to process group */ |
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int p_stat; /* process status S* */ |
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int p_flag; /* P_* flags */ |
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int p_exitcode; /* exit code to send to parrent */ |
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int p_vforked; /* true while processing vfork() */ |
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int p_invfork; /* true if child of vfork() */ |
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pid_t p_pid; /* process id */
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task_t p_task; /* task id */
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void *p_stackbase; /* pointer to stack */ |
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void *p_stacksaved; /* pointer to saved stack */ |
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}; |
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/* Status values. */
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#define SRUN 1 /* running */ |
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#define SZOMB 2 /* process terminated but not waited for */ |
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#define SSTOP 3 /* proces stopped */ |
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/* These flags are kept in p_flags. */
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#define P_TRACED 0x00001 /* debugged process being traced. */ |
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/*
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* Global variables.
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*/
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extern struct proc initproc; /* process slot for init */ |
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extern struct list allproc; /* list of all processes */ |
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extern struct proc *curproc; /* current (caller) process */ |
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extern int perrno; /* errno */ |
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__BEGIN_DECLS |
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/* pid.c */
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pid_t sys_getpid(void);
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pid_t sys_getppid(void);
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int sys_getpgid(pid_t, pid_t *);
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int sys_setpgid(pid_t, pid_t);
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int sys_getsid(pid_t, pid_t *);
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int sys_setsid(pid_t *);
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/* fork.c */
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int newproc(struct proc *, pid_t, task_t); |
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int sys_fork(task_t, int, pid_t *); |
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void cleanup(struct proc *); |
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void vfork_end(struct proc *); |
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/* exit.c */
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int sys_exit(int); |
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int stop(int); |
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int sys_waitpid(pid_t, int *, int, pid_t *); |
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/* kill.c */
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int sys_kill(pid_t pid, int sig); |
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int kill_pg(pid_t, int); |
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/* hash.c */
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struct proc *p_find(pid_t);
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struct pgrp *pg_find(pid_t);
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struct proc *task_to_proc(task_t);
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void p_add(struct proc *); |
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void p_remove(struct proc *); |
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void pg_add(struct pgrp *); |
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void pg_remove(struct pgrp *); |
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void table_init(void); |
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/* tty.c */
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void tty_init(void); |
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__END_DECLS |
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#endif /* !_PROC_H */ |