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core_netbsd.c revision 1.21 
      1 /*	$NetBSD: core_netbsd.c,v 1.21 2014/01/03 21:12:18 dsl Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 Charles D. Cranor and Washington University.
      5  * Copyright (c) 1991, 1993 The Regents of the University of California.
      6  * Copyright (c) 1988 University of Utah.
      7  *
      8  * All rights reserved.
      9  *
     10  * This code is derived from software contributed to Berkeley by
     11  * the Systems Programming Group of the University of Utah Computer
     12  * Science Department.
     13  *
     14  * Redistribution and use in source and binary forms, with or without
     15  * modification, are permitted provided that the following conditions
     16  * are met:
     17  * 1. Redistributions of source code must retain the above copyright
     18  *    notice, this list of conditions and the following disclaimer.
     19  * 2. Redistributions in binary form must reproduce the above copyright
     20  *    notice, this list of conditions and the following disclaimer in the
     21  *    documentation and/or other materials provided with the distribution.
     22  * 3. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  * from: Utah $Hdr: vm_unix.c 1.1 89/11/07$
     39  *      @(#)vm_unix.c   8.1 (Berkeley) 6/11/93
     40  * from: NetBSD: uvm_unix.c,v 1.25 2001/11/10 07:37:01 lukem Exp
     41  */
     42 
     43 /*
     44  * core_netbsd.c: Support for the historic NetBSD core file format.
     45  */
     46 
     47 #include <sys/cdefs.h>
     48 __KERNEL_RCSID(0, "$NetBSD: core_netbsd.c,v 1.21 2014/01/03 21:12:18 dsl Exp $");
     49 
     50 #ifdef _KERNEL_OPT
     51 #include "opt_coredump.h"
     52 #endif
     53 
     54 #include <sys/param.h>
     55 #include <sys/systm.h>
     56 #include <sys/exec.h>
     57 #include <sys/proc.h>
     58 #include <sys/vnode.h>
     59 #include <sys/core.h>
     60 
     61 #include <uvm/uvm_extern.h>
     62 
     63 #ifndef CORENAME
     64 #define	CORENAME(x)	x
     65 #endif
     66 #ifdef COREINC
     67 #include COREINC
     68 #endif
     69 
     70 #ifdef COREDUMP
     71 
     72 struct coredump_state {
     73 	struct coredump_iostate *iocookie;
     74 	struct CORENAME(core) core;
     75 };
     76 
     77 static int	CORENAME(coredump_writesegs_netbsd)(struct uvm_coredump_state *);
     78 
     79 int
     80 CORENAME(coredump_netbsd)(struct lwp *l, struct coredump_iostate *iocookie)
     81 {
     82 	struct coredump_state cs;
     83 	struct proc *p = l->l_proc;
     84 	struct vmspace *vm = p->p_vmspace;
     85 	int error;
     86 
     87 	cs.iocookie = iocookie;
     88 	cs.core.c_midmag = 0;
     89 	strncpy(cs.core.c_name, p->p_comm, MAXCOMLEN);
     90 	cs.core.c_nseg = 0;
     91 	cs.core.c_signo = p->p_sigctx.ps_signo;
     92 	cs.core.c_ucode = p->p_sigctx.ps_code;
     93 	cs.core.c_cpusize = 0;
     94 	cs.core.c_tsize = (u_long)ctob(vm->vm_tsize);
     95 	cs.core.c_dsize = (u_long)ctob(vm->vm_dsize);
     96 	cs.core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize));
     97 
     98 	error = CORENAME(cpu_coredump)(l, NULL, &cs.core);
     99 	if (error)
    100 		return (error);
    101 	cs.core.c_nseg = uvm_coredump_count_segs(p);
    102 
    103 	/* First write out the core header. */
    104 	error = coredump_write(iocookie, UIO_SYSSPACE, &cs.core,
    105 	    cs.core.c_hdrsize);
    106 	if (error)
    107 		return (error);
    108 
    109 	/* Then the CPU specific stuff */
    110 	error = CORENAME(cpu_coredump)(l, iocookie, &cs.core);
    111 	if (error)
    112 		return (error);
    113 
    114 	/* Finally, the address space dump */
    115 	return uvm_coredump_walkmap(p, CORENAME(coredump_writesegs_netbsd),
    116 	    &cs);
    117 }
    118 
    119 static int
    120 CORENAME(coredump_writesegs_netbsd)(struct uvm_coredump_state *us)
    121 {
    122 	struct coredump_state *cs = us->cookie;
    123 	struct CORENAME(coreseg) cseg;
    124 	int flag, error;
    125 
    126 	if (us->flags & UVM_COREDUMP_STACK)
    127 		flag = CORE_STACK;
    128 	else
    129 		flag = CORE_DATA;
    130 
    131 	/*
    132 	 * Set up a new core file segment.
    133 	 */
    134 	CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag);
    135 	cseg.c_addr = us->start;
    136 	cseg.c_size = us->end - us->start;
    137 
    138 	error = coredump_write(cs->iocookie, UIO_SYSSPACE,
    139 	    &cseg, cs->core.c_seghdrsize);
    140 	if (error)
    141 		return (error);
    142 
    143 	return coredump_write(cs->iocookie, UIO_USERSPACE,
    144 	    (void *)(vaddr_t)us->start, cseg.c_size);
    145 }
    146 
    147 #else	/* COREDUMP */
    148 
    149 int
    150 CORENAME(coredump_netbsd)(struct lwp *l, struct coredump_iostate *cookie)
    151 {
    152 
    153 	return ENOSYS;
    154 }
    155 
    156 #endif	/* COREDUMP */
    157