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 }
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