9c2128ecdd
1) savecore will not access the dump or live-kernel directly. It
will always use the kvm-functions. Allowing it to work on kernels
that don't have a 1-1 PA-VA mapping.
2) the kvm-lib has some additional functions to accomplish 1
- kvm_dump_mkheader()
- kvm_dump_wrtheader()
- kvm_dump_inval()
3) the file formats of the dump generated by the kernel and the dump
generated by savecore have been changed. The file format now looks
like the format produced for 'normal' core dumps.
Ports not yet supporting the new kvm-format will be using libkvm.old/
savecore.old for the time being.
100 lines
4.1 KiB
C
100 lines
4.1 KiB
C
/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software developed by the Computer Systems
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* Engineering group at Lawrence Berkeley Laboratory under DARPA contract
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* BG 91-66 and contributed to Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kvm_private.h 8.1 (Berkeley) 6/4/93
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*/
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struct __kvm {
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/*
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* a string to be prepended to error messages
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* provided for compatibility with sun's interface
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* if this value is null, errors are saved in errbuf[]
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*/
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const char *program;
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char *errp; /* XXX this can probably go away */
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char errbuf[_POSIX2_LINE_MAX];
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DB *db;
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#define ISALIVE(kd) ((kd)->vmfd >= 0)
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int pmfd; /* physical memory file (or crashdump) */
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int vmfd; /* virtual memory file (-1 if crashdump) */
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int swfd; /* swap file (e.g., /dev/drum) */
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int nlfd; /* namelist file (e.g., /vmunix) */
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struct kinfo_proc *procbase;
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int nbpg; /* page size */
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char *swapspc; /* (dynamic) storage for swapped pages */
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char *argspc, *argbuf; /* (dynamic) storage for argv strings */
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int arglen; /* length of the above */
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char **argv; /* (dynamic) storage for argv pointers */
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int argc; /* length of above (not actual # present) */
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/*
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* Header structures for kernel dumps. Only gets filled in for
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* dead kernels.
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*/
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struct kcore_hdr *kcore_hdr;
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struct cpu_kcore_hdr *cpu_hdr;
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off_t dump_off; /* Where the actual dump starts */
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/*
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* Kernel virtual address translation state. This only gets filled
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* in for dead kernels; otherwise, the running kernel (i.e. kmem)
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* will do the translations for us. It could be big, so we
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* only allocate it if necessary.
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*/
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struct vmstate *vmst; /* XXX: should become obsoleted */
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/*
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* These kernel variables are used for looking up user addresses,
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* and are cached for efficiency.
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*/
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struct pglist *vm_page_buckets;
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int vm_page_hash_mask;
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};
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/*
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* Functions used internally by kvm, but across kvm modules.
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*/
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void _kvm_err __P((kvm_t *kd, const char *program, const char *fmt, ...));
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int _kvm_dump_mkheader __P((kvm_t *kd_live, kvm_t *kd_dump));
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void _kvm_freeprocs __P((kvm_t *kd));
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void _kvm_freevtop __P((kvm_t *));
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int _kvm_initvtop __P((kvm_t *));
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int _kvm_kvatop __P((kvm_t *, u_long, u_long *));
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void *_kvm_malloc __P((kvm_t *kd, size_t));
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off_t _kvm_pa2off __P((kvm_t *, u_long));
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void *_kvm_realloc __P((kvm_t *kd, void *, size_t));
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void _kvm_syserr
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__P((kvm_t *kd, const char *program, const char *fmt, ...));
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