7cf8b4b933
without VIMAGE virtualization in the kernel. If we cannot resolve a symbol try to see if we can find it with prefix of the virtualized subsystem, currently only "vnet_entry" by identifying either the vnet of the current process for a live system or the vnet of proc0 (or of dumptid if compiled in a non-default way). The way this is done currently allows us to only touch libkvm but no single application. Once we are going to virtualize more subsystems we will have to review this decision for better scaling. Submitted by: rwatson (initial version of kvm_vnet.c, lots of ideas) Reviewed by: rwatson Approved by: re (kib)
97 lines
4.1 KiB
C
97 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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* 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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* $FreeBSD$
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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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#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 unused; /* was: swap file (e.g., /dev/drum) */
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int nlfd; /* namelist file (e.g., /kernel) */
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struct kinfo_proc *procbase;
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char *argspc; /* (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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char *argbuf; /* (dynamic) temporary storage */
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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;
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int rawdump; /* raw dump format */
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int vnet_initialized; /* vnet fields set up */
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uintptr_t vnet_start; /* start of kernel's vnet region */
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uintptr_t vnet_stop; /* stop of kernel's vnet region */
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uintptr_t vnet_current; /* vnet we're working with */
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uintptr_t vnet_base; /* vnet base of current vnet */
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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(kvm_t *kd, const char *program, const char *fmt, ...)
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__printflike(3, 4);
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void _kvm_freeprocs(kvm_t *kd);
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void _kvm_freevtop(kvm_t *);
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int _kvm_initvtop(kvm_t *);
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int _kvm_kvatop(kvm_t *, u_long, off_t *);
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void *_kvm_malloc(kvm_t *kd, size_t);
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int _kvm_nlist(kvm_t *, struct nlist *, int);
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void *_kvm_realloc(kvm_t *kd, void *, size_t);
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void _kvm_syserr (kvm_t *kd, const char *program, const char *fmt, ...)
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__printflike(3, 4);
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int _kvm_uvatop(kvm_t *, const struct proc *, u_long, u_long *);
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int _kvm_vnet_selectpid(kvm_t *, pid_t);
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int _kvm_vnet_initialized(kvm_t *, int);
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uintptr_t _kvm_vnet_validaddr(kvm_t *, uintptr_t);
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#if defined(__amd64__) || defined(__i386__) || defined(__arm__)
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void _kvm_minidump_freevtop(kvm_t *);
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int _kvm_minidump_initvtop(kvm_t *);
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int _kvm_minidump_kvatop(kvm_t *, u_long, off_t *);
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#endif
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