1 /* $NetBSD: core_netbsd.c,v 1.18 2011/02/02 20:10:09 chuck 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 1.18 2011/02/02 20:10:09 chuck 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 CORENAME(core) core; 74 }; 75 76 static int CORENAME(coredump_countsegs_netbsd)(struct proc *, void *, 77 struct uvm_coredump_state *); 78 static int CORENAME(coredump_writesegs_netbsd)(struct proc *, void *, 79 struct uvm_coredump_state *); 80 81 int 82 CORENAME(coredump_netbsd)(struct lwp *l, void *iocookie) 83 { 84 struct coredump_state cs; 85 struct proc *p = l->l_proc; 86 struct vmspace *vm = p->p_vmspace; 87 int error; 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 error = CORENAME(cpu_coredump)(l, NULL, &cs.core); 100 if (error) 101 return (error); 102 error = uvm_coredump_walkmap(p, NULL, 103 CORENAME(coredump_countsegs_netbsd), &cs); 104 if (error) 105 return (error); 106 107 /* First write out the core header. */ 108 error = coredump_write(iocookie, UIO_SYSSPACE, &cs.core, 109 cs.core.c_hdrsize); 110 if (error) 111 return (error); 112 113 /* Then the CPU specific stuff */ 114 error = CORENAME(cpu_coredump)(l, iocookie, &cs.core); 115 if (error) 116 return (error); 117 118 /* Finally, the address space dump */ 119 return uvm_coredump_walkmap(p, iocookie, 120 CORENAME(coredump_writesegs_netbsd), &cs); 121 } 122 123 static int 124 CORENAME(coredump_countsegs_netbsd)(struct proc *p, void *iocookie, 125 struct uvm_coredump_state *us) 126 { 127 struct coredump_state *cs = us->cookie; 128 129 if (us->start != us->realend) 130 cs->core.c_nseg++; 131 132 return (0); 133 } 134 135 static int 136 CORENAME(coredump_writesegs_netbsd)(struct proc *p, void *iocookie, 137 struct uvm_coredump_state *us) 138 { 139 struct coredump_state *cs = us->cookie; 140 struct CORENAME(coreseg) cseg; 141 int flag, error; 142 143 if (us->start == us->realend) 144 return (0); 145 146 if (us->flags & UVM_COREDUMP_STACK) 147 flag = CORE_STACK; 148 else 149 flag = CORE_DATA; 150 151 /* 152 * Set up a new core file segment. 153 */ 154 CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag); 155 cseg.c_addr = us->start; 156 cseg.c_size = us->end - us->start; 157 158 error = coredump_write(iocookie, UIO_SYSSPACE, 159 &cseg, cs->core.c_seghdrsize); 160 if (error) 161 return (error); 162 163 return coredump_write(iocookie, UIO_USERSPACE, 164 (void *)(vaddr_t)us->start, cseg.c_size); 165 } 166 167 #else /* COREDUMP */ 168 169 int 170 CORENAME(coredump_netbsd)(struct lwp *l, void *cookie) 171 { 172 173 return ENOSYS; 174 } 175 176 #endif /* COREDUMP */ 177