Return to proc.h CVS log

Up to [local] / prex-old / usr / server / proc

Annotation of prex-old/usr/server/proc/proc.h, Revision 1.1.1.1

1.1       nbrk        1: /*
                      2:  * Copyright (c) 2005-2007, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: #ifndef _PROC_H
                     31: #define _PROC_H
                     32:
                     33: #include <sys/param.h>
                     34: #include <sys/types.h>
                     35: #include <sys/list.h>
                     36: #include <sys/syslog.h>
                     37: #include <server/proc.h>
                     38: #include <server/stdmsg.h>
                     39:
                     40: #include <unistd.h>
                     41: #include <stdio.h>
                     42:
                     43: #ifdef DEBUG
                     44: /* #define DEBUG_PROC 1 */
                     45: #endif
                     46:
                     47: #ifdef DEBUG_PROC
                     48: #define dprintf(fmt, args...)  syslog(LOG_DEBUG, "proc: " fmt, ## args)
                     49: #else
                     50: #define dprintf(fmt...)                do {} while (0)
                     51: #endif
                     52:
                     53: #define PRIO_PROC      130             /* priority of process server */
                     54: #define PID_MAX                0x8000          /* max number for PID */
                     55:
                     56: #define ID_MAXBUCKETS  32
                     57: #define IDHASH(x)      ((x) & (ID_MAXBUCKETS - 1))
                     58:
                     59: /*
                     60:  * Process group
                     61:  */
                     62: struct pgrp {
                     63:        struct list     pgid_link;      /* link for pgid hash */
                     64:        struct list     members;        /* list head of processes */
                     65:        pid_t           pgid;           /* pgrp id */
                     66: };
                     67:
                     68: /*
                     69:  * Description of a process.
                     70:  */
                     71: struct proc {
                     72:        struct list     link;           /* link for all processes */
                     73:        struct proc     *parent;        /* pointer to parent process */
                     74:        struct list     children;       /* list head of child processes */
                     75:        struct list     sibling;        /* link for sibling processes */
                     76:        struct list     pid_link;       /* link for pid hash */
                     77:        struct list     task_link;      /* link for task hash */
                     78:        struct list     pgrp_link;      /* link for process group */
                     79:        struct pgrp     *pgrp;          /* pointer to process group */
                     80:        int             stat;           /* process status S* */
                     81:        int             exit_code;      /* exit code to send to parrent */
                     82:        int             wait_vfork;     /* true while processing vfork() */
                     83:        pid_t           pid;            /* process id */
                     84:        task_t          task;           /* task id */
                     85:        cap_t           cap;            /* capability of the task */
                     86:        void            *stack_base;    /* pointer to stack */
                     87:        void            *stack_saved;   /* pointer to saved stack */
                     88: };
                     89:
                     90: /*
                     91:  * stat codes
                     92:  */
                     93: #define SRUN   1       /* running */
                     94: #define SZOMB  2       /* process terminated but not waited for */
                     95: #define SSTOP  3       /* proces stopped */
                     96:
                     97: /*
                     98:  * Global variables.
                     99:  */
                    100: extern struct proc initproc;           /* process slot for init */
                    101: extern struct list allproc;            /* list of all processes */
                    102: extern struct proc *curproc;           /* current (caller) process */
                    103:
                    104: extern pid_t pid_assign(void);
                    105: extern struct proc *proc_find(pid_t);
                    106: extern struct pgrp *pgrp_find(pid_t);
                    107: extern struct proc *task_to_proc(task_t);
                    108: extern void proc_add(struct proc *);
                    109: extern void proc_remove(struct proc *);
                    110: extern void pgrp_add(struct pgrp *);
                    111: extern void pgrp_remove(struct pgrp *);
                    112: extern void table_init(void);
                    113: extern void pid_init(void);
                    114: extern void proc_cleanup(struct proc *);
                    115: extern void vfork_end(struct proc *);
                    116: extern int kill_pg(pid_t, int);
                    117: extern void tty_init(void);
                    118:
                    119: extern int proc_getpid(struct msg *);
                    120: extern int proc_getppid(struct msg *);
                    121: extern int proc_getpgid(struct msg *);
                    122: extern int proc_setpgid(struct msg *);
                    123: extern int proc_fork(struct msg *);
                    124: extern int proc_exit(struct msg *);
                    125: extern int proc_stop(struct msg *);
                    126: extern int proc_waitpid(struct msg *);
                    127: extern int proc_kill(struct msg *);
                    128:
                    129: #endif /* !_PROC_H */