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Revision 1.20, Mon Sep 12 21:11:32 2011 UTC (9 years ago) by christos
Branch: MAIN
CVS Tags: yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb8-mediatek-base, matt-nb8-mediatek, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, localcount-20160914, is-mlppp-base, is-mlppp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, agc-symver-base, agc-symver
Changes since 1.19: +2 -1 lines

add a function to report the name of the file kvm_open{,.files} is using.

/*	$NetBSD: kvm_private.h,v 1.20 2011/09/12 21:11:32 christos Exp $	*/

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software developed by the Computer Systems
 * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
 * BG 91-66 and contributed to Berkeley.
 *
 * 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. 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.
 *
 *	@(#)kvm_private.h	8.1 (Berkeley) 6/4/93
 */

struct __kvm {
	/*
	 * a string to be prepended to error messages
	 * provided for compatibility with sun's interface
	 * if this value is null, errors are saved in errbuf[]
	 */
	const char *program;
	char	*errp;		/* XXX this can probably go away */
	char	errbuf[_POSIX2_LINE_MAX];
	int	pmfd;		/* physical memory file (or crash dump) */
	int	vmfd;		/* virtual memory file (-1 if crash dump) */
	int	swfd;		/* swap file (e.g., /dev/drum) */
	int	nlfd;		/* namelist file (e.g., /vmunix) */
	char	alive;		/* live kernel? */
	struct kinfo_proc *procbase;
	struct kinfo_proc2 *procbase2;
	struct kinfo_lwp *lwpbase;
	size_t  procbase_len;
	size_t  procbase2_len;
	size_t  lwpbase_len;
	u_long	usrstack;		/* address of end of user stack */
	u_long	min_uva, max_uva;	/* min/max user virtual address */
	int	nbpg;		/* page size */
	char	*swapspc;	/* (dynamic) storage for swapped pages */
	char	*argspc, *argbuf; /* (dynamic) storage for argv strings */
	size_t	argspc_len;	/* length of the above */
	char	**argv;		/* (dynamic) storage for argv pointers */
	int	argc;		/* length of above (not actual # present) */

	/*
	 * Header structures for kernel dumps. Only gets filled in for
	 * dead kernels.
	 */
	struct kcore_hdr	*kcore_hdr;
	size_t	cpu_dsize;
	void	*cpu_data;
	off_t	dump_off;	/* Where the actual dump starts	*/

	/*
	 * Kernel virtual address translation state.  This only gets filled
	 * in for dead kernels; otherwise, the running kernel (i.e. kmem)
	 * will do the translations for us.  It could be big, so we
	 * only allocate it if necessary.
	 */
	struct vmstate *vmst; /* XXX: should become obsoleted */
	/*
	 * These kernel variables are used for looking up user addresses,
	 * and are cached for efficiency.
	 */
	struct pglist *vm_page_buckets;
	int vm_page_hash_mask;
	/* Buffer for raw disk I/O. */
	size_t fdalign;
	uint8_t *iobuf;
	size_t iobufsz;
	char kernelname[MAXPATHLEN];
};

/* Levels of aliveness */
#define	KVM_ALIVE_DEAD		0	/* dead, working from core file */
#define	KVM_ALIVE_FILES		1	/* alive, working from open kmem/drum */
#define	KVM_ALIVE_SYSCTL	2	/* alive, sysctl-type calls only */

#define	ISALIVE(kd)	((kd)->alive != KVM_ALIVE_DEAD)
#define	ISKMEM(kd)	((kd)->alive == KVM_ALIVE_FILES)
#define	ISSYSCTL(kd)	((kd)->alive == KVM_ALIVE_SYSCTL || ISKMEM(kd))

/*
 * Functions used internally by kvm, but across kvm modules.
 */
void	 _kvm_err(kvm_t *, const char *, const char *, ...)
	    __attribute__((__format__(__printf__, 3, 4)));
int	 _kvm_dump_mkheader(kvm_t *, kvm_t *);
void	 _kvm_freeprocs(kvm_t *);
void	 _kvm_freevtop(kvm_t *);
int	 _kvm_mdopen(kvm_t *);
int	 _kvm_initvtop(kvm_t *);
int	 _kvm_kvatop(kvm_t *, vaddr_t, paddr_t *);
void	*_kvm_malloc(kvm_t *, size_t);
off_t	 _kvm_pa2off(kvm_t *, paddr_t);
void	*_kvm_realloc(kvm_t *, void *, size_t);
void	 _kvm_syserr(kvm_t *, const char *, const char *, ...)
	    __attribute__((__format__(__printf__, 3, 4)));
ssize_t	_kvm_pread(kvm_t *, int, void *, size_t, off_t);

#define KREAD(kd, addr, obj) \
	(kvm_read(kd, addr, (obj), sizeof(*obj)) != sizeof(*obj))

#define KVM_ALLOC(kd, member, size) \
    do { \
	if (kd->member == NULL)	\
		kd->member = _kvm_malloc(kd, kd->member ## _len = size); \
	else if (kd->member ## _len < size) \
		kd->member = _kvm_realloc(kd, kd->member, \
		    kd->member ## _len = size); \
	if (kd->member == NULL) { \
		kd->member ## _len = 0; \
		return (NULL); \
	} \
    } while (/*CONSTCOND*/0)