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kvm_private.h revision 1.5 
      1 /*-
      2  * Copyright (c) 1992, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * This code is derived from software developed by the Computer Systems
      6  * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
      7  * BG 91-66 and contributed to Berkeley.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed by the University of
     20  *	California, Berkeley and its contributors.
     21  * 4. Neither the name of the University nor the names of its contributors
     22  *    may be used to endorse or promote products derived from this software
     23  *    without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  *	@(#)kvm_private.h	8.1 (Berkeley) 6/4/93
     38  */
     39 
     40 struct __kvm {
     41 	/*
     42 	 * a string to be prepended to error messages
     43 	 * provided for compatibility with sun's interface
     44 	 * if this value is null, errors are saved in errbuf[]
     45 	 */
     46 	const char *program;
     47 	char	*errp;		/* XXX this can probably go away */
     48 	char	errbuf[_POSIX2_LINE_MAX];
     49 	DB	*db;
     50 #define ISALIVE(kd) ((kd)->vmfd >= 0)
     51 	int	pmfd;		/* physical memory file (or crashdump) */
     52 	int	vmfd;		/* virtual memory file (-1 if crashdump) */
     53 	int	swfd;		/* swap file (e.g., /dev/drum) */
     54 	int	nlfd;		/* namelist file (e.g., /vmunix) */
     55 	struct kinfo_proc *procbase;
     56 	int	nbpg;		/* page size */
     57 	char	*swapspc;	/* (dynamic) storage for swapped pages */
     58 	char	*argspc, *argbuf; /* (dynamic) storage for argv strings */
     59 	int	arglen;		/* length of the above */
     60 	char	**argv;		/* (dynamic) storage for argv pointers */
     61 	int	argc;		/* length of above (not actual # present) */
     62 
     63 	/*
     64 	 * Header structures for kernel dumps. Only gets filled in for
     65 	 * dead kernels.
     66 	 */
     67 	struct kcore_hdr	*kcore_hdr;
     68 	struct cpu_kcore_hdr	*cpu_hdr;
     69 	off_t	dump_off;	/* Where the actual dump starts	*/
     70 
     71 	/*
     72 	 * Kernel virtual address translation state.  This only gets filled
     73 	 * in for dead kernels; otherwise, the running kernel (i.e. kmem)
     74 	 * will do the translations for us.  It could be big, so we
     75 	 * only allocate it if necessary.
     76 	 */
     77 	struct vmstate *vmst; /* XXX: should become obsoleted */
     78 	/*
     79 	 * These kernel variables are used for looking up user addresses,
     80 	 * and are cached for efficiency.
     81 	 */
     82 	struct pglist *vm_page_buckets;
     83 	int vm_page_hash_mask;
     84 };
     85 
     86 /*
     87  * Functions used internally by kvm, but across kvm modules.
     88  */
     89 void	 _kvm_err __P((kvm_t *kd, const char *program, const char *fmt, ...));
     90 int	 _kvm_dump_mkheader __P((kvm_t *kd_live, kvm_t *kd_dump));
     91 void	 _kvm_freeprocs __P((kvm_t *kd));
     92 void	 _kvm_freevtop __P((kvm_t *));
     93 int	 _kvm_initvtop __P((kvm_t *));
     94 int	 _kvm_kvatop __P((kvm_t *, u_long, u_long *));
     95 void	*_kvm_malloc __P((kvm_t *kd, size_t));
     96 off_t	 _kvm_pa2off __P((kvm_t *, u_long));
     97 void	*_kvm_realloc __P((kvm_t *kd, void *, size_t));
     98 void	 _kvm_syserr
     99 	    __P((kvm_t *kd, const char *program, const char *fmt, ...));
    100