1 /* $NetBSD: core_netbsd.c,v 1.17 2011/01/14 02:06:34 rmind 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 1.17 2011/01/14 02:06:34 rmind Exp $"); 54 55 #ifdef _KERNEL_OPT 56 #include "opt_coredump.h" 57 #endif 58 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/exec.h> 62 #include <sys/proc.h> 63 #include <sys/vnode.h> 64 #include <sys/core.h> 65 66 #include <uvm/uvm_extern.h> 67 68 #ifndef CORENAME 69 #define CORENAME(x) x 70 #endif 71 #ifdef COREINC 72 #include COREINC 73 #endif 74 75 #ifdef COREDUMP 76 77 struct coredump_state { 78 struct CORENAME(core) core; 79 }; 80 81 static int CORENAME(coredump_countsegs_netbsd)(struct proc *, void *, 82 struct uvm_coredump_state *); 83 static int CORENAME(coredump_writesegs_netbsd)(struct proc *, void *, 84 struct uvm_coredump_state *); 85 86 int 87 CORENAME(coredump_netbsd)(struct lwp *l, void *iocookie) 88 { 89 struct coredump_state cs; 90 struct proc *p = l->l_proc; 91 struct vmspace *vm = p->p_vmspace; 92 int error; 93 94 cs.core.c_midmag = 0; 95 strncpy(cs.core.c_name, p->p_comm, MAXCOMLEN); 96 cs.core.c_nseg = 0; 97 cs.core.c_signo = p->p_sigctx.ps_signo; 98 cs.core.c_ucode = p->p_sigctx.ps_code; 99 cs.core.c_cpusize = 0; 100 cs.core.c_tsize = (u_long)ctob(vm->vm_tsize); 101 cs.core.c_dsize = (u_long)ctob(vm->vm_dsize); 102 cs.core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize)); 103 104 error = CORENAME(cpu_coredump)(l, NULL, &cs.core); 105 if (error) 106 return (error); 107 error = uvm_coredump_walkmap(p, NULL, 108 CORENAME(coredump_countsegs_netbsd), &cs); 109 if (error) 110 return (error); 111 112 /* First write out the core header. */ 113 error = coredump_write(iocookie, UIO_SYSSPACE, &cs.core, 114 cs.core.c_hdrsize); 115 if (error) 116 return (error); 117 118 /* Then the CPU specific stuff */ 119 error = CORENAME(cpu_coredump)(l, iocookie, &cs.core); 120 if (error) 121 return (error); 122 123 /* Finally, the address space dump */ 124 return uvm_coredump_walkmap(p, iocookie, 125 CORENAME(coredump_writesegs_netbsd), &cs); 126 } 127 128 static int 129 CORENAME(coredump_countsegs_netbsd)(struct proc *p, void *iocookie, 130 struct uvm_coredump_state *us) 131 { 132 struct coredump_state *cs = us->cookie; 133 134 if (us->start != us->realend) 135 cs->core.c_nseg++; 136 137 return (0); 138 } 139 140 static int 141 CORENAME(coredump_writesegs_netbsd)(struct proc *p, void *iocookie, 142 struct uvm_coredump_state *us) 143 { 144 struct coredump_state *cs = us->cookie; 145 struct CORENAME(coreseg) cseg; 146 int flag, error; 147 148 if (us->start == us->realend) 149 return (0); 150 151 if (us->flags & UVM_COREDUMP_STACK) 152 flag = CORE_STACK; 153 else 154 flag = CORE_DATA; 155 156 /* 157 * Set up a new core file segment. 158 */ 159 CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag); 160 cseg.c_addr = us->start; 161 cseg.c_size = us->end - us->start; 162 163 error = coredump_write(iocookie, UIO_SYSSPACE, 164 &cseg, cs->core.c_seghdrsize); 165 if (error) 166 return (error); 167 168 return coredump_write(iocookie, UIO_USERSPACE, 169 (void *)(vaddr_t)us->start, cseg.c_size); 170 } 171 172 #else /* COREDUMP */ 173 174 int 175 CORENAME(coredump_netbsd)(struct lwp *l, void *cookie) 176 { 177 178 return ENOSYS; 179 } 180 181 #endif /* COREDUMP */ 182