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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*-
27: * Copyright (c) 1982, 1988, 1991, 1993
28: * The Regents of the University of California. All rights reserved.
29: * (c) UNIX System Laboratories, Inc.
30: * All or some portions of this file are derived from material licensed
31: * to the University of California by American Telephone and Telegraph
32: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
33: * the permission of UNIX System Laboratories, Inc.
34: *
35: * Redistribution and use in source and binary forms, with or without
36: * modification, are permitted provided that the following conditions
37: * are met:
38: * 1. Redistributions of source code must retain the above copyright
39: * notice, this list of conditions and the following disclaimer.
40: * 2. Redistributions in binary form must reproduce the above copyright
41: * notice, this list of conditions and the following disclaimer in the
42: * documentation and/or other materials provided with the distribution.
43: * 3. All advertising materials mentioning features or use of this software
44: * must display the following acknowledgement:
45: * This product includes software developed by the University of
46: * California, Berkeley and its contributors.
47: * 4. Neither the name of the University nor the names of its contributors
48: * may be used to endorse or promote products derived from this software
49: * without specific prior written permission.
50: *
51: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61: * SUCH DAMAGE.
62: *
63: * @(#)systm.h 8.7 (Berkeley) 3/29/95
64: */
65:
66: /*
67: * The `securelevel' variable controls the security level of the system.
68: * It can only be decreased by process 1 (/sbin/init).
69: *
70: * Security levels are as follows:
71: * -1 permannently insecure mode - always run system in level 0 mode.
72: * 0 insecure mode - immutable and append-only flags make be turned off.
73: * All devices may be read or written subject to permission modes.
74: * 1 secure mode - immutable and append-only flags may not be changed;
75: * raw disks of mounted filesystems, /dev/mem, and /dev/kmem are
76: * read-only.
77: * 2 highly secure mode - same as (1) plus raw disks are always
78: * read-only whether mounted or not. This level precludes tampering
79: * with filesystems by unmounting them, but also inhibits running
80: * newfs while the system is secured.
81: *
82: * In normal operation, the system runs in level 0 mode while single user
83: * and in level 1 mode while multiuser. If level 2 mode is desired while
84: * running multiuser, it can be set in the multiuser startup script
85: * (/etc/rc.local) using sysctl(1). If it is desired to run the system
86: * in level 0 mode while multiuser, initialize the variable securelevel
87: * in /sys/kern/kern_sysctl.c to -1. Note that it is NOT initialized to
88: * zero as that would allow the vmunix binary to be patched to -1.
89: * Without initialization, securelevel loads in the BSS area which only
90: * comes into existence when the kernel is loaded and hence cannot be
91: * patched by a stalking hacker.
92: */
93:
94: #ifndef _SYS_SYSTM_H_
95: #define _SYS_SYSTM_H_
96:
97: #include <sys/types.h>
98: #include <sys/time.h>
99: #include <sys/tty.h>
100: #include <sys/vm.h>
101:
102: extern int securelevel; /* system security level */
103: extern const char *panicstr; /* panic message */
104: extern char version[]; /* system version */
105: extern char copyright[]; /* system copyright */
106:
107: extern int nblkdev; /* number of entries in bdevsw */
108: extern int nchrdev; /* number of entries in cdevsw */
109:
110: extern dev_t rootdev; /* root device */
111: extern struct vnode *rootvp; /* vnode equivalent to above */
112:
113: extern struct sysent { /* system call table */
114: int16_t sy_narg; /* number of args */
115: int16_t sy_parallel;/* can execute in parallel */
116: int32_t (*sy_call)(); /* implementing function */
117: } sysent[];
118: extern int nsysent;
119:
120: extern int boothowto; /* reboot flags, from console subsystem */
121: extern int show_space;
122:
123: #include <sys/cdefs.h>
124:
125: /*
126: * General function declarations.
127: */
128: int nullop __P((void));
129: int enodev (); /* avoid actual prototype for multiple use */
130: void enodev_strat();
131: int nulldev();
132: int enoioctl __P((void));
133: int enxio __P((void));
134: int eopnotsupp __P((void));
135: int einval __P((void));
136: int seltrue __P((dev_t dev, int which, struct proc *p));
137: void *hashinit __P((int count, int type, u_long *hashmask));
138: int nosys __P((struct proc *, void *, register_t *));
139:
140: #ifdef __GNUC__
141: volatile void panic __P((const char *, ...));
142: #else
143: void panic __P((const char *, ...));
144: #endif
145: void tablefull __P((const char *));
146: void addlog __P((const char *, ...));
147: void log __P((int, const char *, ...));
148: void printf __P((const char *, ...)) __attribute__ ((format (printf, 1, 2)));
149: int sprintf __P((char *buf, const char *, ...)) __attribute__ ((format (printf, 2, 3)));
150: void kprintf __P((const char *, ...)) __attribute__ ((format (printf, 1, 2)));
151: void ttyprintf __P((struct tty *, const char *, ...)) __attribute__ ((format (printf, 2, 3)));
152:
153: void bcopy __P((const void *from, void *to, size_t len));
154: void ovbcopy __P((const void *from, void *to, size_t len));
155: void bzero __P((void *buf, size_t len));
156:
157: int copystr __P((void *kfaddr, void *kdaddr, size_t len, size_t *done));
158: int copyinstr __P((void *udaddr, void *kaddr, size_t len, size_t *done));
159: int copyoutstr __P((void *kaddr, void *udaddr, size_t len, size_t *done));
160: int copyin __P((void *udaddr, void *kaddr, size_t len));
161: int copyout __P((void *kaddr, void *udaddr, size_t len));
162: int copywithin __P((void *saddr, void *daddr, size_t len));
163:
164: int fubyte __P((void *base));
165: #ifdef notdef
166: int fuibyte __P((void *base));
167: #endif
168: int subyte __P((void *base, int byte));
169: int suibyte __P((void *base, int byte));
170: long fuword __P((void *base));
171: long fuiword __P((void *base));
172: int suword __P((void *base, long word));
173: int suiword __P((void *base, long word));
174:
175: int hzto __P((struct timeval *tv));
176: typedef void (*timeout_fcn_t)(void *);
177: void timeout __P((void (*)(void *), void *arg, int ticks));
178: int untimeout __P((void (*)(void *), void *arg));
179: void realitexpire __P((void *));
180:
181: void hardclock __P((caddr_t pc, int ps));
182: void gatherstats __P((caddr_t pc, int ps));
183:
184: void initclocks __P((void));
185:
186: void startprofclock __P((struct proc *));
187: void stopprofclock __P((struct proc *));
188: void setstatclockrate __P((int hzrate));
189:
190: #include <libkern/libkern.h>
191:
192: #ifdef DDB
193: /* debugger entry points */
194: int Debugger __P((void)); /* in DDB only */
195: int read_symtab_from_file __P((struct proc *,struct vnode *,const char *));
196: #endif
197: #endif /* !_SYS_SYSTM_H_ */
198:
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