1 /* $NetBSD: core_netbsd.c,v 1.7 2003/09/14 06:59:14 christos 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 1.7 2003/09/14 06:59:14 christos Exp $");
54
55 #include <sys/param.h>
56 #include <sys/systm.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 struct coredump_state {
64 struct core core;
65 off_t offset;
66 };
67
68 int coredump_writesegs_netbsd(struct proc *, struct vnode *,
69 struct ucred *, struct uvm_coredump_state *);
70
71 int
72 coredump_netbsd(struct lwp *l, struct vnode *vp, struct ucred *cred)
73 {
74 struct coredump_state cs;
75 struct proc *p;
76 struct vmspace *vm;
77 int error;
78
79 p = l->l_proc;
80 vm = p->p_vmspace;
81
82 cs.core.c_midmag = 0;
83 strncpy(cs.core.c_name, p->p_comm, MAXCOMLEN);
84 cs.core.c_nseg = 0;
85 cs.core.c_signo = p->p_sigctx.ps_signo;
86 cs.core.c_ucode = p->p_sigctx.ps_code;
87 cs.core.c_cpusize = 0;
88 cs.core.c_tsize = (u_long)ctob(vm->vm_tsize);
89 cs.core.c_dsize = (u_long)ctob(vm->vm_dsize);
90 cs.core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize));
91 error = cpu_coredump(l, vp, cred, &cs.core);
92 if (error)
93 return (error);
94
95 #if 0
96 /*
97 * XXX
98 * It would be nice if we at least dumped the signal state (and made it
99 * available at run time to the debugger, as well), but this code
100 * hasn't actually had any effect for a long time, since we don't dump
101 * the user area. For now, it's dead.
102 */
103 memcpy(&p->p_addr->u_kproc.kp_proc, p, sizeof(struct proc));
104 fill_eproc(p, &p->p_addr->u_kproc.kp_eproc);
105 #endif
106
107 cs.offset = cs.core.c_hdrsize + cs.core.c_seghdrsize +
108 cs.core.c_cpusize;
109 error = uvm_coredump_walkmap(p, vp, cred, coredump_writesegs_netbsd,
110 &cs);
111 if (error)
112 return (error);
113
114 /* Now write out the core header. */
115 error = vn_rdwr(UIO_WRITE, vp, (caddr_t)&cs.core,
116 (int)cs.core.c_hdrsize, (off_t)0,
117 UIO_SYSSPACE, IO_NODELOCKED|IO_UNIT, cred, NULL, p);
118
119 return (error);
120 }
121
122 int
123 coredump_writesegs_netbsd(struct proc *p, struct vnode *vp, struct ucred *cred,
124 struct uvm_coredump_state *us)
125 {
126 struct coredump_state *cs = us->cookie;
127 struct coreseg cseg;
128 int flag, error;
129
130 if (us->flags & UVM_COREDUMP_NODUMP)
131 return (0);
132
133 if (us->flags & UVM_COREDUMP_STACK)
134 flag = CORE_STACK;
135 else
136 flag = CORE_DATA;
137
138 /*
139 * Set up a new core file segment.
140 */
141 CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag);
142 cseg.c_addr = us->start;
143 cseg.c_size = us->end - us->start;
144
145 error = vn_rdwr(UIO_WRITE, vp,
146 (caddr_t)&cseg, cs->core.c_seghdrsize,
147 cs->offset, UIO_SYSSPACE,
148 IO_NODELOCKED|IO_UNIT, cred, NULL, p);
149 if (error)
150 return (error);
151
152 cs->offset += cs->core.c_seghdrsize;
153 error = vn_rdwr(UIO_WRITE, vp,
154 (caddr_t) us->start, (int) cseg.c_size,
155 cs->offset, UIO_USERSPACE,
156 IO_NODELOCKED|IO_UNIT, cred, NULL, p);
157 if (error)
158 return (error);
159
160 cs->offset += cseg.c_size;
161 cs->core.c_nseg++;
162
163 return (0);
164 }
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