1 /* $NetBSD: core_netbsd.c,v 1.24 2019/11/20 19:37:53 pgoyette 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 1.24 2019/11/20 19:37:53 pgoyette Exp $");
49
50 #include <sys/param.h>
51 #include <sys/systm.h>
52 #include <sys/exec.h>
53 #include <sys/proc.h>
54 #include <sys/vnode.h>
55 #include <sys/core.h>
56 #include <sys/module.h>
57 #include <sys/compat_stub.h>
58 #include <sys/signalvar.h>
59
60 #include <uvm/uvm_extern.h>
61
62 #ifndef CORENAME
63 #define CORENAME(x) x
64 #endif
65 #ifdef COREINC
66 #include COREINC
67 #endif
68
69 struct coredump_state {
70 struct coredump_iostate *iocookie;
71 struct CORENAME(core) core;
72 };
73
74 static int CORENAME(coredump_writesegs_netbsd)(struct uvm_coredump_state *);
75
76 int
CORENAME(real_coredump_netbsd)77 CORENAME(real_coredump_netbsd)(struct lwp *l, struct coredump_iostate *iocookie)
78 {
79 struct coredump_state cs;
80 struct proc *p = l->l_proc;
81 struct vmspace *vm = p->p_vmspace;
82 int error;
83
84 cs.iocookie = iocookie;
85 cs.core.c_midmag = 0;
86 strncpy(cs.core.c_name, p->p_comm, MAXCOMLEN);
87 cs.core.c_nseg = 0;
88 cs.core.c_signo = p->p_sigctx.ps_info._signo;
89 cs.core.c_ucode = p->p_sigctx.ps_info._code;
90 cs.core.c_cpusize = 0;
91 cs.core.c_tsize = (u_long)ctob(vm->vm_tsize);
92 cs.core.c_dsize = (u_long)ctob(vm->vm_dsize);
93 cs.core.c_ssize = (u_long)round_page(ctob(vm->vm_ssize));
94
95 error = CORENAME(cpu_coredump)(l, NULL, &cs.core);
96 if (error)
97 return (error);
98 MODULE_HOOK_CALL(uvm_coredump_count_segs_hook, (p), 0, cs.core.c_nseg);
99
100 /* First write out the core header. */
101 MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE, &cs.core,
102 cs.core.c_hdrsize), ENOSYS, error);
103 if (error)
104 return (error);
105
106 /* Then the CPU specific stuff */
107 error = CORENAME(cpu_coredump)(l, iocookie, &cs.core);
108 if (error)
109 return (error);
110
111 /* Finally, the address space dump */
112 MODULE_HOOK_CALL(uvm_coredump_walkmap_hook,
113 (p, CORENAME(coredump_writesegs_netbsd), &cs), ENOSYS, error);
114
115 return error;
116 }
117
118 static int
CORENAME(coredump_writesegs_netbsd)119 CORENAME(coredump_writesegs_netbsd)(struct uvm_coredump_state *us)
120 {
121 struct coredump_state *cs = us->cookie;
122 struct CORENAME(coreseg) cseg;
123 int flag, error;
124
125 if (us->flags & UVM_COREDUMP_STACK)
126 flag = CORE_STACK;
127 else
128 flag = CORE_DATA;
129
130 /*
131 * Set up a new core file segment.
132 */
133 CORE_SETMAGIC(cseg, CORESEGMAGIC, CORE_GETMID(cs->core), flag);
134 cseg.c_addr = us->start;
135
136 if (us->start == us->realend)
137 /* Not really wanted, but counted... */
138 cseg.c_size = 0;
139 else
140 cseg.c_size = us->end - us->start;
141
142 MODULE_HOOK_CALL(coredump_write_hook, (cs->iocookie, UIO_SYSSPACE,
143 &cseg, cs->core.c_seghdrsize), ENOSYS, error);
144 if (error)
145 return (error);
146
147 MODULE_HOOK_CALL(coredump_write_hook, (cs->iocookie, UIO_USERSPACE,
148 (void *)(vaddr_t)us->start, cseg.c_size), ENOSYS, error);
149
150 return error;
151 }
152