1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2019 Joyent, Inc.
14 */
15
16 #include <mdb/mdb_modapi.h>
17 #include <mdb/mdb_ks.h>
18 #include <sys/refstr.h>
19
20 #define REFSTR_LEN (1024)
21
22 int
cmd_refstr(uintptr_t addr,uint_t flags __unused,int argc,const mdb_arg_t * argv)23 cmd_refstr(uintptr_t addr, uint_t flags __unused,
24 int argc, const mdb_arg_t *argv)
25 {
26 if (!(flags & DCMD_ADDRSPEC)) {
27 mdb_warn("address is required\n");
28 return (DCMD_ERR);
29 }
30
31 if (mdb_getopts(argc, argv, NULL) != argc)
32 return (DCMD_USAGE);
33
34 char *buf = mdb_alloc(REFSTR_LEN, UM_SLEEP | UM_GC);
35
36 if (mdb_read_refstr(addr, buf, REFSTR_LEN) < 0) {
37 mdb_warn("couldn't read refstr from %p", addr);
38 return (DCMD_ERR);
39 }
40
41 mdb_printf("%s\n", buf);
42 return (DCMD_OK);
43 }
44