NetBSD/sys/kern/core_netbsd.c

177 lines
5.4 KiB
C

/* $NetBSD: core_netbsd.c,v 1.12 2005/12/08 03:05:40 thorpej Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
* Copyright (c) 1991, 1993 The Regents of the University of California.
* Copyright (c) 1988 University of Utah.
*
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor,
* Washington University, the University of California, Berkeley and
* its contributors.
* 4. 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.
*
* from: Utah $Hdr: vm_unix.c 1.1 89/11/07$
* @(#)vm_unix.c 8.1 (Berkeley) 6/11/93
* from: NetBSD: uvm_unix.c,v 1.25 2001/11/10 07:37:01 lukem Exp
*/
/*
* core_netbsd.c: Support for the historic NetBSD core file format.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: core_netbsd.c,v 1.12 2005/12/08 03:05:40 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/exec.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/core.h>
#include <uvm/uvm_extern.h>
#ifndef CORENAME
#define CORENAME(x) x
#endif
#ifdef COREINC
#include COREINC
#endif
struct coredump_state {
struct CORENAME(core) core;
};
static int CORENAME(coredump_countsegs_netbsd)(struct proc *, void *,
struct uvm_coredump_state *);
static int CORENAME(coredump_writesegs_netbsd)(struct proc *, void *,
struct uvm_coredump_state *);
int
CORENAME(coredump_netbsd)(struct lwp *l, void *iocookie)
{
struct coredump_state cs;
struct proc *p = l->l_proc;
struct vmspace *vm = p->p_vmspace;
int error;
cs.core.c_midmag = 0;
strncpy(cs.core.c_name, p->p_comm, MAXCOMLEN);
cs.core.c_nseg = 0;
cs.core.c_signo = p->p_sigctx.ps_signo;
cs.core.c_ucode = p->p_sigctx.ps_code;
cs.core.c_cpusize = 0;
cs.core.c_tsize = (u_long)ctob(vm->vm_tsize);
cs.core.c_dsize = (u_long)ctob(vm->vm_dsize);
cs.core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize));
#if 0
/*
* XXX
* It would be nice if we at least dumped the signal state (and made it
* available at run time to the debugger, as well), but this code
* hasn't actually had any effect for a long time, since we don't dump
* the user area. For now, it's dead.
*/
memcpy(&p->p_addr->u_kproc.kp_proc, p, sizeof(struct proc));
fill_eproc(p, &p->p_addr->u_kproc.kp_eproc);
#endif
error = CORENAME(cpu_coredump)(l, NULL, &cs.core);
if (error)
return (error);
error = uvm_coredump_walkmap(p, NULL,
CORENAME(coredump_countsegs_netbsd), &cs);
if (error)
return (error);
/* First write out the core header. */
error = coredump_write(iocookie, UIO_SYSSPACE, &cs.core,
cs.core.c_hdrsize);
if (error)
return (error);
/* Then the CPU specific stuff */
error = CORENAME(cpu_coredump)(l, iocookie, &cs.core);
if (error)
return (error);
/* Finally, the address space dump */
return uvm_coredump_walkmap(p, iocookie,
CORENAME(coredump_writesegs_netbsd), &cs);
}
static int
CORENAME(coredump_countsegs_netbsd)(struct proc *p, void *iocookie,
struct uvm_coredump_state *us)
{
struct coredump_state *cs = us->cookie;
if (us->start != us->realend)
cs->core.c_nseg++;
return (0);
}
static int
CORENAME(coredump_writesegs_netbsd)(struct proc *p, void *iocookie,
struct uvm_coredump_state *us)
{
struct coredump_state *cs = us->cookie;
struct CORENAME(coreseg) cseg;
int flag, error;
if (us->start == us->realend)
return (0);
if (us->flags & UVM_COREDUMP_STACK)
flag = CORE_STACK;
else
flag = CORE_DATA;
/*
* Set up a new core file segment.
*/
CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag);
cseg.c_addr = us->start;
cseg.c_size = us->end - us->start;
error = coredump_write(iocookie, UIO_SYSSPACE,
&cseg, cs->core.c_seghdrsize);
if (error)
return (error);
return coredump_write(iocookie, UIO_USERSPACE,
(void *)(vaddr_t)us->start, cseg.c_size);
}