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kvm_private.h revision 1.9 
      1 /*	$NetBSD: kvm_private.h,v 1.9 2000/05/26 02:42:22 simonb Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software developed by the Computer Systems
      8  * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
      9  * BG 91-66 and contributed to Berkeley.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the University of
     22  *	California, Berkeley and its contributors.
     23  * 4. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  *	@(#)kvm_private.h	8.1 (Berkeley) 6/4/93
     40  */
     41 
     42 struct __kvm {
     43 	/*
     44 	 * a string to be prepended to error messages
     45 	 * provided for compatibility with sun's interface
     46 	 * if this value is null, errors are saved in errbuf[]
     47 	 */
     48 	const char *program;
     49 	char	*errp;		/* XXX this can probably go away */
     50 	char	errbuf[_POSIX2_LINE_MAX];
     51 	DB	*db;
     52 	int	pmfd;		/* physical memory file (or crashdump) */
     53 	int	vmfd;		/* virtual memory file (-1 if crashdump) */
     54 	int	swfd;		/* swap file (e.g., /dev/drum) */
     55 	int	nlfd;		/* namelist file (e.g., /vmunix) */
     56 	char	alive;		/* live kernel? */
     57 	struct kinfo_proc *procbase;
     58 	struct kinfo_proc2 *procbase2;
     59 	u_long	usrstack;		/* address of end of user stack */
     60 	u_long	min_uva, max_uva;	/* min/max user virtual address */
     61 	int	nbpg;		/* page size */
     62 	char	*swapspc;	/* (dynamic) storage for swapped pages */
     63 	char	*argspc, *argbuf; /* (dynamic) storage for argv strings */
     64 	int	arglen;		/* length of the above */
     65 	char	**argv;		/* (dynamic) storage for argv pointers */
     66 	int	argc;		/* length of above (not actual # present) */
     67 
     68 	/*
     69 	 * Header structures for kernel dumps. Only gets filled in for
     70 	 * dead kernels.
     71 	 */
     72 	struct kcore_hdr	*kcore_hdr;
     73 	size_t	cpu_dsize;
     74 	void	*cpu_data;
     75 	off_t	dump_off;	/* Where the actual dump starts	*/
     76 
     77 	/*
     78 	 * Kernel virtual address translation state.  This only gets filled
     79 	 * in for dead kernels; otherwise, the running kernel (i.e. kmem)
     80 	 * will do the translations for us.  It could be big, so we
     81 	 * only allocate it if necessary.
     82 	 */
     83 	struct vmstate *vmst; /* XXX: should become obsoleted */
     84 	/*
     85 	 * These kernel variables are used for looking up user addresses,
     86 	 * and are cached for efficiency.
     87 	 */
     88 	struct pglist *vm_page_buckets;
     89 	int vm_page_hash_mask;
     90 };
     91 
     92 /* Levels of aliveness */
     93 #define	KVM_ALIVE_DEAD		0	/* dead, working from core file */
     94 #define	KVM_ALIVE_FILES		1	/* alive, working from open kmem/drum */
     95 #define	KVM_ALIVE_SYSCTL	2	/* alive, sysctl-type calls only */
     96 
     97 #define	ISALIVE(kd)	((kd)->alive != KVM_ALIVE_DEAD)
     98 #define	ISKMEM(kd)	((kd)->alive == KVM_ALIVE_FILES)
     99 #define	ISSYSCTL(kd)	((kd)->alive == KVM_ALIVE_SYSCTL || ISKMEM(kd))
    100 
    101 /*
    102  * Functions used internally by kvm, but across kvm modules.
    103  */
    104 void	 _kvm_err __P((kvm_t *kd, const char *program, const char *fmt, ...));
    105 int	 _kvm_dump_mkheader __P((kvm_t *kd_live, kvm_t *kd_dump));
    106 void	 _kvm_freeprocs __P((kvm_t *kd));
    107 void	 _kvm_freevtop __P((kvm_t *));
    108 int	 _kvm_mdopen __P((kvm_t *));
    109 int	 _kvm_initvtop __P((kvm_t *));
    110 int	 _kvm_kvatop __P((kvm_t *, u_long, u_long *));
    111 void	*_kvm_malloc __P((kvm_t *kd, size_t));
    112 off_t	 _kvm_pa2off __P((kvm_t *, u_long));
    113 void	*_kvm_realloc __P((kvm_t *kd, void *, size_t));
    114 void	 _kvm_syserr
    115 	    __P((kvm_t *kd, const char *program, const char *fmt, ...));
    116