The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/kern/core_netbsd.c

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    1 /*      $NetBSD: core_netbsd.c,v 1.14 2006/11/01 10:17:58 yamt 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. All advertising materials mentioning features or use of this software
   23  *    must display the following acknowledgement:
   24  *      This product includes software developed by Charles D. Cranor,
   25  *      Washington University, the University of California, Berkeley and
   26  *      its contributors.
   27  * 4. Neither the name of the University nor the names of its contributors
   28  *    may be used to endorse or promote products derived from this software
   29  *    without specific prior written permission.
   30  *
   31  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   32  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   33  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   34  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   35  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   39  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   40  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   41  * SUCH DAMAGE.
   42  *
   43  * from: Utah $Hdr: vm_unix.c 1.1 89/11/07$
   44  *      @(#)vm_unix.c   8.1 (Berkeley) 6/11/93
   45  * from: NetBSD: uvm_unix.c,v 1.25 2001/11/10 07:37:01 lukem Exp
   46  */
   47 
   48 /*
   49  * core_netbsd.c: Support for the historic NetBSD core file format.
   50  */
   51 
   52 #include <sys/cdefs.h>
   53 __KERNEL_RCSID(0, "$NetBSD: core_netbsd.c,v 1.14 2006/11/01 10:17:58 yamt Exp $");
   54 
   55 #include <sys/param.h>
   56 #include <sys/systm.h>
   57 #include <sys/exec.h>
   58 #include <sys/proc.h>
   59 #include <sys/vnode.h>
   60 #include <sys/core.h>
   61 
   62 #include <uvm/uvm_extern.h>
   63 
   64 #ifndef CORENAME
   65 #define CORENAME(x)     x
   66 #endif
   67 #ifdef COREINC
   68 #include COREINC
   69 #endif
   70 
   71 struct coredump_state {
   72         struct CORENAME(core) core;
   73 };
   74 
   75 static int      CORENAME(coredump_countsegs_netbsd)(struct proc *, void *,
   76                     struct uvm_coredump_state *);
   77 static int      CORENAME(coredump_writesegs_netbsd)(struct proc *, void *,
   78                     struct uvm_coredump_state *);
   79 
   80 int
   81 CORENAME(coredump_netbsd)(struct lwp *l, void *iocookie)
   82 {
   83         struct coredump_state cs;
   84         struct proc *p = l->l_proc;
   85         struct vmspace *vm = p->p_vmspace;
   86         int error;
   87 
   88 
   89         cs.core.c_midmag = 0;
   90         strncpy(cs.core.c_name, p->p_comm, MAXCOMLEN);
   91         cs.core.c_nseg = 0;
   92         cs.core.c_signo = p->p_sigctx.ps_signo;
   93         cs.core.c_ucode = p->p_sigctx.ps_code;
   94         cs.core.c_cpusize = 0;
   95         cs.core.c_tsize = (u_long)ctob(vm->vm_tsize);
   96         cs.core.c_dsize = (u_long)ctob(vm->vm_dsize);
   97         cs.core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize));
   98 
   99 #if 0
  100         /*
  101          * XXX
  102          * It would be nice if we at least dumped the signal state (and made it
  103          * available at run time to the debugger, as well), but this code
  104          * hasn't actually had any effect for a long time, since we don't dump
  105          * the user area.  For now, it's dead.
  106          */
  107         memcpy(&p->p_addr->u_kproc.kp_proc, p, sizeof(struct proc));
  108         fill_eproc(p, &p->p_addr->u_kproc.kp_eproc);
  109 #endif
  110         error = CORENAME(cpu_coredump)(l, NULL, &cs.core);
  111         if (error)
  112                 return (error);
  113         error = uvm_coredump_walkmap(p, NULL,
  114             CORENAME(coredump_countsegs_netbsd), &cs);
  115         if (error)
  116                 return (error);
  117 
  118         /* First write out the core header. */
  119         error = coredump_write(iocookie, UIO_SYSSPACE, &cs.core,
  120             cs.core.c_hdrsize);
  121         if (error)
  122                 return (error);
  123 
  124         /* Then the CPU specific stuff */
  125         error = CORENAME(cpu_coredump)(l, iocookie, &cs.core);
  126         if (error)
  127                 return (error);
  128 
  129         /* Finally, the address space dump */
  130         return uvm_coredump_walkmap(p, iocookie,
  131             CORENAME(coredump_writesegs_netbsd), &cs);
  132 }
  133 
  134 static int
  135 CORENAME(coredump_countsegs_netbsd)(struct proc *p, void *iocookie,
  136     struct uvm_coredump_state *us)
  137 {
  138         struct coredump_state *cs = us->cookie;
  139 
  140         if (us->start != us->realend)
  141                 cs->core.c_nseg++;
  142 
  143         return (0);
  144 }
  145 
  146 static int
  147 CORENAME(coredump_writesegs_netbsd)(struct proc *p, void *iocookie,
  148     struct uvm_coredump_state *us)
  149 {
  150         struct coredump_state *cs = us->cookie;
  151         struct CORENAME(coreseg) cseg;
  152         int flag, error;
  153 
  154         if (us->start == us->realend)
  155                 return (0);
  156 
  157         if (us->flags & UVM_COREDUMP_STACK)
  158                 flag = CORE_STACK;
  159         else
  160                 flag = CORE_DATA;
  161 
  162         /*
  163          * Set up a new core file segment.
  164          */
  165         CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag);
  166         cseg.c_addr = us->start;
  167         cseg.c_size = us->end - us->start;
  168 
  169         error = coredump_write(iocookie, UIO_SYSSPACE,
  170             &cseg, cs->core.c_seghdrsize);
  171         if (error)
  172                 return (error);
  173 
  174         return coredump_write(iocookie, UIO_USERSPACE,
  175             (void *)(vaddr_t)us->start, cseg.c_size);
  176 }

Cache object: 6746d6fcb8c6471cf53f165c1b7272fb


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