ff2955473b
describe the process memory layout). Fudge the a.out core code to not dump the entire contents. I'm not sue that anything can read a.out core files - more progress might be made on such dumps by converting the a.out file to elf!
162 lines
4.6 KiB
C
162 lines
4.6 KiB
C
/* $NetBSD: core_netbsd.c,v 1.22 2014/01/07 07:59:03 dsl Exp $ */
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/*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* Copyright (c) 1991, 1993 The Regents of the University of California.
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* Copyright (c) 1988 University of Utah.
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*
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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. 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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* from: Utah $Hdr: vm_unix.c 1.1 89/11/07$
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* @(#)vm_unix.c 8.1 (Berkeley) 6/11/93
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* from: NetBSD: uvm_unix.c,v 1.25 2001/11/10 07:37:01 lukem Exp
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*/
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/*
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* core_netbsd.c: Support for the historic NetBSD core file format.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: core_netbsd.c,v 1.22 2014/01/07 07:59:03 dsl Exp $");
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#ifdef _KERNEL_OPT
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#include "opt_coredump.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/exec.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/core.h>
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#include <uvm/uvm_extern.h>
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#ifndef CORENAME
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#define CORENAME(x) x
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#endif
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#ifdef COREINC
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#include COREINC
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#endif
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#ifdef COREDUMP
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struct coredump_state {
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struct coredump_iostate *iocookie;
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struct CORENAME(core) core;
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};
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static int CORENAME(coredump_writesegs_netbsd)(struct uvm_coredump_state *);
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int
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CORENAME(coredump_netbsd)(struct lwp *l, struct coredump_iostate *iocookie)
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{
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struct coredump_state cs;
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struct proc *p = l->l_proc;
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struct vmspace *vm = p->p_vmspace;
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int error;
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cs.iocookie = iocookie;
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cs.core.c_midmag = 0;
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strncpy(cs.core.c_name, p->p_comm, MAXCOMLEN);
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cs.core.c_nseg = 0;
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cs.core.c_signo = p->p_sigctx.ps_signo;
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cs.core.c_ucode = p->p_sigctx.ps_code;
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cs.core.c_cpusize = 0;
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cs.core.c_tsize = (u_long)ctob(vm->vm_tsize);
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cs.core.c_dsize = (u_long)ctob(vm->vm_dsize);
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cs.core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize));
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error = CORENAME(cpu_coredump)(l, NULL, &cs.core);
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if (error)
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return (error);
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cs.core.c_nseg = uvm_coredump_count_segs(p);
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/* First write out the core header. */
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error = coredump_write(iocookie, UIO_SYSSPACE, &cs.core,
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cs.core.c_hdrsize);
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if (error)
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return (error);
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/* Then the CPU specific stuff */
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error = CORENAME(cpu_coredump)(l, iocookie, &cs.core);
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if (error)
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return (error);
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/* Finally, the address space dump */
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return uvm_coredump_walkmap(p, CORENAME(coredump_writesegs_netbsd),
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&cs);
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}
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static int
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CORENAME(coredump_writesegs_netbsd)(struct uvm_coredump_state *us)
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{
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struct coredump_state *cs = us->cookie;
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struct CORENAME(coreseg) cseg;
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int flag, error;
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if (us->flags & UVM_COREDUMP_STACK)
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flag = CORE_STACK;
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else
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flag = CORE_DATA;
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/*
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* Set up a new core file segment.
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*/
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CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag);
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cseg.c_addr = us->start;
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if (us->start == us->realend)
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/* Not really wanted, but counted... */
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cseg.c_size = 0;
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else
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cseg.c_size = us->end - us->start;
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error = coredump_write(cs->iocookie, UIO_SYSSPACE,
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&cseg, cs->core.c_seghdrsize);
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if (error)
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return (error);
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return coredump_write(cs->iocookie, UIO_USERSPACE,
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(void *)(vaddr_t)us->start, cseg.c_size);
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}
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#else /* COREDUMP */
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int
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CORENAME(coredump_netbsd)(struct lwp *l, struct coredump_iostate *cookie)
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{
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return ENOSYS;
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}
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#endif /* COREDUMP */
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