1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * Copyright (c) 2013, Joyent, Inc. All rights reserved.
28 */
29
30 /*
31 * The default KVM backend, which simply calls directly into libkvm for all
32 * operations.
33 */
34
35 #include <mdb/mdb_kb.h>
36 #include <mdb/mdb_target_impl.h>
37
38 #include <fcntl.h>
39 #include <dlfcn.h>
40 #include <kvm.h>
41
42 /*ARGSUSED*/
43 static mdb_io_t *
libkvm_sym_io(void * kvm,const char * ignored)44 libkvm_sym_io(void *kvm, const char *ignored)
45 {
46 mdb_io_t *io;
47 const char *symfile = kvm_namelist(kvm);
48
49 if ((io = mdb_fdio_create_path(NULL, symfile, O_RDONLY, 0)) == NULL)
50 mdb_warn("failed to open %s", symfile);
51
52 return (io);
53 }
54
55 mdb_kb_ops_t *
libkvm_kb_ops(void)56 libkvm_kb_ops(void)
57 {
58 static mdb_kb_ops_t ops = {
59 .kb_open = (void *(*)())kvm_open,
60 .kb_close = (int (*)())kvm_close,
61 .kb_sym_io = libkvm_sym_io,
62 .kb_kread = (ssize_t (*)())kvm_kread,
63 .kb_kwrite = (ssize_t (*)())kvm_kwrite,
64 .kb_aread = (ssize_t (*)())kvm_aread,
65 .kb_awrite = (ssize_t (*)())kvm_awrite,
66 .kb_pread = (ssize_t (*)())kvm_pread,
67 .kb_pwrite = (ssize_t (*)())kvm_pwrite,
68 .kb_getmregs = (int (*)())mdb_tgt_notsup,
69 .kb_vtop = (uint64_t (*)())kvm_physaddr,
70 };
71 return (&ops);
72 }
73