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Diffstat (limited to 'c/src/exec/libnetworking/sys/kernel.h')
| -rw-r--r-- | c/src/exec/libnetworking/sys/kernel.h | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/c/src/exec/libnetworking/sys/kernel.h b/c/src/exec/libnetworking/sys/kernel.h new file mode 100644 index 0000000000..35bce70bd6 --- /dev/null +++ b/c/src/exec/libnetworking/sys/kernel.h @@ -0,0 +1,251 @@ +/*- + * Copyright (c) 1995 Terrence R. Lambert + * All rights reserved. + * + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * (c) UNIX System Laboratories, Inc. + * All or some portions of this file are derived from material licensed + * to the University of California by American Telephone and Telegraph + * Co. or Unix System Laboratories, Inc. and are reproduced herein with + * the permission of UNIX System Laboratories, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)kernel.h 8.3 (Berkeley) 1/21/94 + * $Id$ + */ + +#ifndef _SYS_KERNEL_H_ +#define _SYS_KERNEL_H_ + +/* Global variables for the kernel. */ + +/* 1.1 */ +extern long hostid; +extern char hostname[MAXHOSTNAMELEN]; +extern int hostnamelen; +extern char domainname[MAXHOSTNAMELEN]; +extern int domainnamelen; +extern char kernelname[MAXPATHLEN]; + +/* 1.2 */ +extern volatile struct timeval mono_time; +extern struct timeval boottime; +extern struct timeval runtime; +/* extern volatile struct timeval time; */ +extern struct timezone tz; /* XXX */ + +extern int tick; /* usec per tick (1000000 / hz) */ +extern int hz; /* system clock's frequency */ +extern int psratio; /* ratio: prof / stat */ +extern int stathz; /* statistics clock's frequency */ +extern int profhz; /* profiling clock's frequency */ +extern int ticks; +extern int lbolt; /* once a second sleep address */ +extern int tickdelta; +extern long timedelta; + +/* + * The following macros are used to declare global sets of objects, which + * are collected by the linker into a `struct linker_set' as defined below. + * + * NB: the constants defined below must match those defined in + * ld/ld.h. Since their calculation requires arithmetic, we + * can't name them symbolically (e.g., 23 is N_SETT | N_EXT). + */ +#define MAKE_SET(set, sym, type) +#define TEXT_SET(set, sym) MAKE_SET(set, sym, 23) +#define DATA_SET(set, sym) MAKE_SET(set, sym, 25) +#define BSS_SET(set, sym) MAKE_SET(set, sym, 27) +#define ABS_SET(set, sym) MAKE_SET(set, sym, 21) + + +/* + * Enumerated types for known system startup interfaces. + * + * Startup occurs in ascending numeric order; the list entries are + * sorted prior to attempting startup to guarantee order. Items + * of the same level are arbitrated for order based on the 'order' + * element. + * + * These numbers are arbitrary and are chosen ONLY for ordering; the + * enumeration values are explicit rather than implicit to provide + * for binary compatibility with inserted elements. + * + * The SI_SUB_RUN_SCHEDULER value must have the highest lexical value. + * + * The SI_SUB_CONSOLE and SI_SUB_SWAP values represent values used by + * the BSD 4.4Lite but not by FreeBSD; they are maintained in dependent + * order to support porting. + * + * The SI_SUB_PROTO_BEGIN and SI_SUB_PROTO_END bracket a range of + * initializations to take place at splimp(). This is a historical + * wart that should be removed -- probably running everything at + * splimp() until the first init that doesn't want it is the correct + * fix. They are currently present to ensure historical behavior. + */ +enum sysinit_sub_id { + SI_SUB_DUMMY = 0x00000000, /* not executed; for linker*/ + SI_SUB_CONSOLE = 0x08000000, /* console*/ + SI_SUB_COPYRIGHT = 0x08000001, /* first use of console*/ + SI_SUB_VM = 0x10000000, /* virtual memory system init*/ + SI_SUB_KMEM = 0x18000000, /* kernel memory*/ + SI_SUB_CPU = 0x20000000, /* CPU resource(s)*/ + SI_SUB_DEVFS = 0x22000000, /* get DEVFS ready */ + SI_SUB_DRIVERS = 0x23000000, /* Let Drivers initialize */ + SI_SUB_CONFIGURE = 0x24000000, /* Configure devices */ + SI_SUB_INTRINSIC = 0x28000000, /* proc 0*/ + SI_SUB_RUN_QUEUE = 0x30000000, /* the run queue*/ + SI_SUB_VM_CONF = 0x38000000, /* config VM, set limits*/ + SI_SUB_VFS = 0x40000000, /* virtual file system*/ + SI_SUB_CLOCKS = 0x48000000, /* real time and stat clocks*/ + SI_SUB_MBUF = 0x50000000, /* mbufs*/ + SI_SUB_CLIST = 0x58000000, /* clists*/ + SI_SUB_SYSV_SHM = 0x64000000, /* System V shared memory*/ + SI_SUB_SYSV_SEM = 0x68000000, /* System V semaphores*/ + SI_SUB_SYSV_MSG = 0x6C000000, /* System V message queues*/ + SI_SUB_PSEUDO = 0x70000000, /* pseudo devices*/ + SI_SUB_PROTO_BEGIN = 0x80000000, /* XXX: set splimp (kludge)*/ + SI_SUB_PROTO_IF = 0x84000000, /* interfaces*/ + SI_SUB_PROTO_DOMAIN = 0x88000000, /* domains (address families?)*/ + SI_SUB_PROTO_END = 0x8fffffff, /* XXX: set splx (kludge)*/ + SI_SUB_KPROF = 0x90000000, /* kernel profiling*/ + SI_SUB_KICK_SCHEDULER = 0xa0000000, /* start the timeout events*/ + SI_SUB_ROOT = 0xb0000000, /* root mount*/ + SI_SUB_ROOT_FDTAB = 0xb8000000, /* root vnode in fd table...*/ + SI_SUB_SWAP = 0xc0000000, /* swap*/ + SI_SUB_INTRINSIC_POST = 0xd0000000, /* proc 0 cleanup*/ + SI_SUB_KTHREAD_INIT = 0xe0000000, /* init process*/ + SI_SUB_KTHREAD_PAGE = 0xe4000000, /* pageout daemon*/ + SI_SUB_KTHREAD_VM = 0xe8000000, /* vm daemon*/ + SI_SUB_KTHREAD_UPDATE = 0xec000000, /* update daemon*/ + SI_SUB_RUN_SCHEDULER = 0xffffffff /* scheduler: no return*/ +}; + + +/* + * Some enumerated orders; "ANY" sorts last. + */ +enum sysinit_elem_order { + SI_ORDER_FIRST = 0x00000000, /* first*/ + SI_ORDER_SECOND = 0x00000001, /* second*/ + SI_ORDER_THIRD = 0x00000002, /* third*/ + SI_ORDER_MIDDLE = 0x10000000, /* somewhere in the middle */ + SI_ORDER_ANY = 0xffffffff /* last*/ +}; + + +/* + * System initialization call types; currently two are supported... one + * to do a simple function call and one to cause a process to be started + * by the kernel on the callers behalf. + */ +typedef enum sysinit_elem_type { + SI_TYPE_DEFAULT = 0x00000000, /* No special processing*/ + SI_TYPE_KTHREAD = 0x00000001 /* start kernel thread*/ +} si_elem_t; + + +/* + * A system initialization call instance + * + * The subsystem + */ +struct sysinit { + unsigned int subsystem; /* subsystem identifier*/ + unsigned int order; /* init order within subsystem*/ + void (*func) __P((void *)); /* init function*/ + void *udata; /* multiplexer/argument */ + si_elem_t type; /* sysinit_elem_type*/ +}; + + +/* + * Default: no special processing + */ +#define SYSINIT(uniquifier, subsystem, order, func, ident) + +/* + * Call 'fork()' before calling '(*func)(ident)'; + * for making a kernel 'thread' (or builtin process.) + */ +#define SYSINIT_KT(uniquifier, subsystem, order, func, ident) + + +/* + * A kernel process descriptor; used to start "internal" daemons + * + * Note: global_procpp may be NULL for no global save area + */ +struct kproc_desc { + char *arg0; /* arg 0 (for 'ps' listing)*/ + void (*func) __P((void)); /* "main" for kernel process*/ + struct proc **global_procpp; /* ptr to proc ptr save area*/ +}; + +void kproc_start __P((void *udata)); + +#ifdef PSEUDO_LKM +#include <sys/conf.h> +#include <sys/exec.h> +#include <sys/sysent.h> +#include <sys/lkm.h> + +#define PSEUDO_SET(init, name) \ + extern struct linker_set MODVNOPS; \ + MOD_MISC(name); \ + static int \ + name ## _load(struct lkm_table *lkmtp, int cmd) \ + { init((void *)NULL /* XXX unused (?) */); return 0; } \ + static int \ + name ## _unload(struct lkm_table *lkmtp, int cmd) \ + { return EINVAL; } \ + int \ + name ## _mod(struct lkm_table *lkmtp, int cmd, int ver) { \ + DISPATCH(lkmtp, cmd, ver, name ## _load, name ## _unload, \ + lkm_nullcmd); } +#else /* PSEUDO_LKM */ + +/* + * Compatibility. To be deprecated after LKM is updated. + */ +#define PSEUDO_SET(sym, name) SYSINIT(ps, SI_SUB_PSEUDO, SI_ORDER_ANY, sym, 0) + +#endif /* PSEUDO_LKM */ + +struct linker_set { + int ls_length; + const void *ls_items[1]; /* really ls_length of them, + * trailing NULL */ +}; + +extern struct linker_set execsw_set; + +#endif /* !_SYS_KERNEL_H_*/ |