fc5bb5a941a6ef49b2401698d8523dded08cb374
2 * Copyright (c) 1982, 1988, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
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18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
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35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)systm.h 8.4 (Berkeley) 2/23/94
44 #include <machine/cpufunc.h>
45 #include <machine/stdarg.h>
48 * The `securelevel' variable controls the security level of the system.
49 * It can only be decreased by process 1 (/sbin/init).
51 * Security levels are as follows:
52 * -1 permannently insecure mode - always run system in level 0 mode.
53 * 0 insecure mode - immutable and append-only flags make be turned off.
54 * All devices may be read or written subject to permission modes.
55 * 1 secure mode - immutable and append-only flags may not be changed;
56 * raw disks of mounted filesystems, /dev/mem, and /dev/kmem are
58 * 2 highly secure mode - same as (1) plus raw disks are always
59 * read-only whether mounted or not. This level precludes tampering
60 * with filesystems by unmounting them, but also inhibits running
61 * newfs while the system is secured.
63 * In normal operation, the system runs in level 0 mode while single user
64 * and in level 1 mode while multiuser. If level 2 mode is desired while
65 * running multiuser, it can be set in the multiuser startup script
66 * (/etc/rc.local) using sysctl(1). If it is desired to run the system
67 * in level 0 mode while multiuser, initialize the variable securelevel
68 * in /sys/kern/kern_sysctl.c to -1. Note that it is NOT initialized to
69 * zero as that would allow the kernel binary to be patched to -1.
70 * Without initialization, securelevel loads in the BSS area which only
71 * comes into existence when the kernel is loaded and hence cannot be
72 * patched by a stalking hacker.
74 extern int securelevel
; /* system security level */
76 extern int cold
; /* nonzero if we are doing a cold boot */
77 extern const char *panicstr
; /* panic message */
78 extern char version
[]; /* system version */
79 extern char copyright
[]; /* system copyright */
81 extern int nblkdev
; /* number of entries in bdevsw */
82 extern int nchrdev
; /* number of entries in cdevsw */
83 extern struct swdevt
*swdevt
; /* swap-device information */
84 extern int nswdev
; /* number of swap devices */
85 extern int nswap
; /* size of swap space */
87 extern int selwait
; /* select timeout address */
89 extern u_char curpriority
; /* priority of current process */
91 extern int physmem
; /* physical memory */
93 extern dev_t dumpdev
; /* dump device */
94 extern long dumplo
; /* offset into dumpdev */
96 extern dev_t rootdev
; /* root device */
97 extern struct vnode
*rootvp
; /* vnode equivalent to above */
99 extern dev_t swapdev
; /* swapping device */
100 extern struct vnode
*swapdev_vp
;/* vnode equivalent to above */
102 extern int boothowto
; /* reboot flags, from console subsystem */
105 * General function declarations.
107 int nullop
__P((void));
108 int enodev
__P((void));
109 int enoioctl
__P((void));
110 int enxio
__P((void));
111 int eopnotsupp
__P((void));
112 int seltrue
__P((dev_t dev
, int which
, struct proc
*p
));
113 int ureadc
__P((int, struct uio
*));
114 void *hashinit
__P((int count
, int type
, u_long
*hashmask
));
115 void *phashinit
__P((int count
, int type
, u_long
*nentries
));
117 __dead
void panic
__P((const char *, ...)) __dead2
;
118 __dead
void boot
__P((int)) __dead2
;
119 void tablefull
__P((const char *));
120 void addlog
__P((const char *, ...));
122 void log
__P((int, const char *, ...));
123 void printf
__P((const char *, ...));
125 #include <oskitfreebsd.h>
126 #include <oskitdebug.h>
127 #define log(x,...) OS_DbgPrint(x,(__VA_ARGS__))
129 void uprintf
__P((const char *, ...));
130 int sprintf
__P((char *buf
, const char *, ...));
131 void ttyprintf
__P((struct tty
*, const char *, ...));
132 void kprintf
__P((const char *fmt
, int flags
, struct tty
*tp
, va_list ap
));
135 void bcopy
__P((const void *from
, void *to
, size_t len
));
137 void ovbcopy
__P((const void *from
, void *to
, size_t len
));
138 void blkclr
__P((void *buf
, u_int len
));
139 void bzero
__P((void *buf
, size_t len
));
142 void *memcpy
__P((void *to
, const void *from
, size_t len
));
145 int copystr
__P((void *kfaddr
, void *kdaddr
, u_int len
, u_int
*done
));
146 int copyinstr
__P((void *udaddr
, void *kaddr
, u_int len
, u_int
*done
));
147 int copyoutstr
__P((void *kaddr
, void *udaddr
, u_int len
, u_int
*done
));
148 int copyin
__P((void *udaddr
, void *kaddr
, u_int len
));
149 int copyout
__P((void *kaddr
, void *udaddr
, u_int len
));
151 int fubyte
__P((void *base
));
152 int fuibyte
__P((void *base
));
153 int subyte
__P((void *base
, int byte
));
154 int suibyte
__P((void *base
, int byte
));
155 int fuword
__P((void *base
));
156 int fuiword
__P((void *base
));
157 int suword
__P((void *base
, int word
));
158 int susword
__P((void *base
, int word
));
159 int suiword
__P((void *base
, int word
));
161 int hzto
__P((struct timeval
*tv
));
162 void realitexpire
__P((void *));
165 void hardclock
__P((struct clockframe
*frame
));
166 void softclock
__P((void));
167 void statclock
__P((struct clockframe
*frame
));
169 void initclocks
__P((void));
171 void startprofclock
__P((struct proc
*));
172 void stopprofclock
__P((struct proc
*));
173 void setstatclockrate
__P((int hzrate
));
175 void hardupdate
__P((long));
176 #include <sys/libkern.h>
178 /* Initialize the world */
179 extern void consinit(void);
180 extern void kmeminit(void);
181 extern void cpu_startup(void);
182 extern void usrinfoinit(void);
183 extern void rqinit(void);
184 extern void vfsinit(void);
185 extern void mbinit(void);
186 extern void clist_init(void);
187 extern void ifinit(void);
188 extern void domaininit(void);
189 extern void cpu_initclocks(void);
190 extern void vntblinit(void);
191 extern void nchinit(void);
193 /* Finalize the world. */
194 void shutdown_nice
__P((void));
196 extern __dead
void vm_pageout(void) __dead2
; /* pagedaemon, called in proc 2 */
197 extern __dead
void vfs_update(void) __dead2
; /* update, called in proc 3 */
198 extern __dead
void scheduler(void) __dead2
; /* sched, called in process 0 */
201 * Kernel to clock driver interface.
203 void inittodr
__P((time_t base
));
204 void resettodr
__P((void));
205 void startrtclock
__P((void));
208 typedef void (timeout_t
)(void *); /* actual timeout function type */
209 typedef timeout_t
*timeout_func_t
; /* a pointer to this type */
211 void timeout(timeout_func_t
, void *, int);
212 void untimeout(timeout_func_t
, void *);
213 void logwakeup
__P((void));
215 /* Syscalls that are called internally. */
219 int close
__P((struct proc
*, struct close_args
*uap
, int *retval
));
225 int execve
__P((struct proc
*, struct execve_args
*, int *retval
));
229 int fork
__P((struct proc
*, struct fork_args
*, int retval
[]));
233 int sync
__P((struct proc
*, struct sync_args
*, int *retval
));
238 struct rusage
*rusage
;
239 #if defined(COMPAT_43) || defined(COMPAT_IBCS2)
240 int compat
; /* pseudo */
243 int wait1
__P((struct proc
*, struct wait_args
*, int retval
[]));
245 #endif /* !_SYS_SYSTM_H_ */