ab35544b83
- Add a kvaddr_type to represent kernel virtual addresses instead of unsigned long. - Add a struct kvm_nlist which is a stripped down version of struct nlist that uses kvaddr_t for n_value. - Add a kvm_native() routine that returns true if an open kvm descriptor is for a native kernel and memory image. - Add a kvm_open2() function similar to kvm_openfiles(). It drops the unused 'swapfile' argument and adds a new function pointer argument for a symbol resolving function. Native kernels still use _fdnlist() from libc to resolve symbols if a resolver function is not supplied, but cross kernels require a resolver. - Add a kvm_nlist2() function similar to kvm_nlist() except that it uses struct kvm_nlist instead of struct nlist. - Add a kvm_read2() function similar to kvm_read() except that it uses kvaddr_t instead of unsigned long for the kernel virtual address. - Add a new kvm_arch switch of routines needed by a vmcore backend. Each backend is responsible for implementing kvm_read2() for a given vmcore format. - Use libelf to read headers from ELF kernels and cores (except for powerpc cores). - Add internal helper routines for the common page offset hash table used by the minidump backends. - Port all of the existing kvm backends to implement a kvm_arch switch and to be cross-friendly by using private constants instead of ones that vary by platform (e.g. PAGE_SIZE). Static assertions are present when a given backend is compiled natively to ensure the private constants match the real ones. - Enable all of the existing vmcore backends on all platforms. This means that libkvm on any platform should be able to perform KVA translation and read data from a vmcore of any platform. Tested on: amd64, i386, sparc64 (marius) Differential Revision: https://reviews.freebsd.org/D3341
111 lines
3.6 KiB
C
111 lines
3.6 KiB
C
/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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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.h 8.1 (Berkeley) 6/2/93
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* $FreeBSD$
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*/
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#ifndef _KVM_H_
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#define _KVM_H_
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <nlist.h>
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/* Default version symbol. */
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#define VRS_SYM "_version"
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#define VRS_KEY "VERSION"
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#ifndef _SIZE_T_DECLARED
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typedef __size_t size_t;
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#define _SIZE_T_DECLARED
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#endif
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#ifndef _SSIZE_T_DECLARED
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typedef __ssize_t ssize_t;
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#define _SSIZE_T_DECLARED
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#endif
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typedef uint64_t kvaddr_t; /* An address in a target image. */
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struct kvm_nlist {
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const char *n_name;
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unsigned char n_type;
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kvaddr_t n_value;
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};
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typedef struct __kvm kvm_t;
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struct kinfo_proc;
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struct proc;
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struct kvm_swap {
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char ksw_devname[32];
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int ksw_used;
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int ksw_total;
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int ksw_flags;
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int ksw_reserved1;
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int ksw_reserved2;
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};
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#define SWIF_DEV_PREFIX 0x0002
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__BEGIN_DECLS
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int kvm_close(kvm_t *);
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int kvm_dpcpu_setcpu(kvm_t *, unsigned int);
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char **kvm_getargv(kvm_t *, const struct kinfo_proc *, int);
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int kvm_getcptime(kvm_t *, long *);
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char **kvm_getenvv(kvm_t *, const struct kinfo_proc *, int);
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char *kvm_geterr(kvm_t *);
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char *kvm_getfiles(kvm_t *, int, int, int *);
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int kvm_getloadavg(kvm_t *, double [], int);
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int kvm_getmaxcpu(kvm_t *);
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int kvm_getncpus(kvm_t *);
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void *kvm_getpcpu(kvm_t *, int);
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uint64_t kvm_counter_u64_fetch(kvm_t *, u_long);
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struct kinfo_proc *
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kvm_getprocs(kvm_t *, int, int, int *);
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int kvm_getswapinfo(kvm_t *, struct kvm_swap *, int, int);
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int kvm_native(kvm_t *);
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int kvm_nlist(kvm_t *, struct nlist *);
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int kvm_nlist2(kvm_t *, struct kvm_nlist *);
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kvm_t *kvm_open
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(const char *, const char *, const char *, int, const char *);
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kvm_t *kvm_openfiles
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(const char *, const char *, const char *, int, char *);
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kvm_t *kvm_open2
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(const char *, const char *, int, char *,
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int (*)(const char *, kvaddr_t *));
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ssize_t kvm_read(kvm_t *, unsigned long, void *, size_t);
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ssize_t kvm_read_zpcpu(kvm_t *, unsigned long, void *, size_t, int);
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ssize_t kvm_read2(kvm_t *, kvaddr_t, void *, size_t);
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ssize_t kvm_write(kvm_t *, unsigned long, const void *, size_t);
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__END_DECLS
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#endif /* !_KVM_H_ */
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