scoutos / prex-0.9.0 / usr / server / proc / proc.h @ 03e9c04a
History | View | Annotate | Download (4.59 KB)
1 | 03e9c04a | Brad Neuman | /*
|
---|---|---|---|
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/cdefs.h> |
||
34 | #include <sys/param.h> |
||
35 | #include <sys/types.h> |
||
36 | #include <sys/list.h> |
||
37 | #include <ipc/proc.h> |
||
38 | #include <ipc/ipc.h> |
||
39 | #include <sys/capability.h> |
||
40 | |||
41 | #include <unistd.h> |
||
42 | #include <stdio.h> |
||
43 | #include <assert.h> |
||
44 | |||
45 | /* #define DEBUG_PROC 1 */
|
||
46 | |||
47 | #ifdef DEBUG_PROC
|
||
48 | #define DPRINTF(a) dprintf a
|
||
49 | #define ASSERT(e) dassert(e)
|
||
50 | #else
|
||
51 | #define DPRINTF(a)
|
||
52 | #define ASSERT(e)
|
||
53 | #endif
|
||
54 | |||
55 | #define PID_MAX 0x8000 /* max number for PID */ |
||
56 | |||
57 | #define ID_MAXBUCKETS 32 |
||
58 | #define IDHASH(x) ((x) & (ID_MAXBUCKETS - 1)) |
||
59 | |||
60 | struct proc;
|
||
61 | |||
62 | /*
|
||
63 | * Session
|
||
64 | */
|
||
65 | struct session {
|
||
66 | int s_refcnt; /* reference count */ |
||
67 | struct proc *s_leader; /* session leader */ |
||
68 | int s_ttyhold; /* true if hold tty */ |
||
69 | }; |
||
70 | |||
71 | |||
72 | /*
|
||
73 | * Process group
|
||
74 | */
|
||
75 | struct pgrp {
|
||
76 | struct list pg_link; /* link for pgid hash */ |
||
77 | struct list pg_members; /* list head of processes */ |
||
78 | struct session *pg_session; /* pointer to session */ |
||
79 | pid_t pg_pgid; /* pgrp id */
|
||
80 | }; |
||
81 | |||
82 | /*
|
||
83 | * Description of a process
|
||
84 | */
|
||
85 | struct proc {
|
||
86 | struct list p_link; /* link for all processes */ |
||
87 | struct proc *p_parent; /* pointer to parent process */ |
||
88 | struct list p_children; /* list head of child processes */ |
||
89 | struct list p_sibling; /* link for sibling processes */ |
||
90 | struct list p_pid_link; /* link for pid hash */ |
||
91 | struct list p_task_link; /* link for task hash */ |
||
92 | struct list p_pgrp_link; /* link for process group */ |
||
93 | struct pgrp *p_pgrp; /* pointer to process group */ |
||
94 | int p_stat; /* process status S* */ |
||
95 | int p_flag; /* P_* flags */ |
||
96 | int p_exitcode; /* exit code to send to parrent */ |
||
97 | int p_vforked; /* true while processing vfork() */ |
||
98 | int p_invfork; /* true if child of vfork() */ |
||
99 | pid_t p_pid; /* process id */
|
||
100 | task_t p_task; /* task id */
|
||
101 | void *p_stackbase; /* pointer to stack */ |
||
102 | void *p_stacksaved; /* pointer to saved stack */ |
||
103 | }; |
||
104 | |||
105 | /* Status values. */
|
||
106 | #define SRUN 1 /* running */ |
||
107 | #define SZOMB 2 /* process terminated but not waited for */ |
||
108 | #define SSTOP 3 /* proces stopped */ |
||
109 | |||
110 | /* These flags are kept in p_flags. */
|
||
111 | #define P_TRACED 0x00001 /* debugged process being traced. */ |
||
112 | |||
113 | /*
|
||
114 | * Global variables.
|
||
115 | */
|
||
116 | extern struct proc initproc; /* process slot for init */ |
||
117 | extern struct list allproc; /* list of all processes */ |
||
118 | extern struct proc *curproc; /* current (caller) process */ |
||
119 | extern int perrno; /* errno */ |
||
120 | |||
121 | __BEGIN_DECLS |
||
122 | |||
123 | /* pid.c */
|
||
124 | pid_t sys_getpid(void);
|
||
125 | pid_t sys_getppid(void);
|
||
126 | int sys_getpgid(pid_t, pid_t *);
|
||
127 | int sys_setpgid(pid_t, pid_t);
|
||
128 | int sys_getsid(pid_t, pid_t *);
|
||
129 | int sys_setsid(pid_t *);
|
||
130 | |||
131 | /* fork.c */
|
||
132 | int newproc(struct proc *, pid_t, task_t); |
||
133 | int sys_fork(task_t, int, pid_t *); |
||
134 | void cleanup(struct proc *); |
||
135 | void vfork_end(struct proc *); |
||
136 | |||
137 | /* exit.c */
|
||
138 | int sys_exit(int); |
||
139 | int stop(int); |
||
140 | int sys_waitpid(pid_t, int *, int, pid_t *); |
||
141 | |||
142 | /* kill.c */
|
||
143 | int sys_kill(pid_t pid, int sig); |
||
144 | int kill_pg(pid_t, int); |
||
145 | |||
146 | /* hash.c */
|
||
147 | struct proc *p_find(pid_t);
|
||
148 | struct pgrp *pg_find(pid_t);
|
||
149 | struct proc *task_to_proc(task_t);
|
||
150 | void p_add(struct proc *); |
||
151 | void p_remove(struct proc *); |
||
152 | void pg_add(struct pgrp *); |
||
153 | void pg_remove(struct pgrp *); |
||
154 | void table_init(void); |
||
155 | |||
156 | /* tty.c */
|
||
157 | void tty_init(void); |
||
158 | |||
159 | __END_DECLS |
||
160 | |||
161 | #endif /* !_PROC_H */ |