sockfs.c revision 8348:4137e18bfaf0 
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 2008 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <sys/types.h>
27#include <sys/stropts.h>
28#include <sys/socket.h>
29#include <sys/socketvar.h>
30
31#include <mdb/mdb_modapi.h>
32#include <mdb/mdb_ks.h>
33
34/*
35 * Look up the symbol name for the given sockparams list and walk
36 * all the entries.
37 */
38static boolean_t
39sockparams_walk_list(const char *symname, int argc, const mdb_arg_t *argv)
40{
41	GElf_Sym sym;
42
43	if (mdb_lookup_by_name(symname, &sym)) {
44		mdb_warn("can't find symbol %s", symname);
45		return (B_FALSE);
46	}
47
48	if (mdb_pwalk_dcmd("list", "sockfs`sockparams", argc, argv,
49	    sym.st_value) != 0) {
50		mdb_warn("can't walk %s", symname);
51		return (B_FALSE);
52	}
53
54	return (B_TRUE);
55}
56
57/*
58 * dcmd to print sockparams info.
59 *
60 * If no address is given then the default is to print all sockparams on the
61 * global list (i.e., installed with soconfig(1)). To also print the ephemeral
62 * entries the '-e' flag should be used. Only ephemeral entries can be printed
63 * by specifying the '-E' flag.
64 */
65static int
66sockparams_prt(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
67{
68	struct sockparams sp;
69
70	if ((flags & DCMD_ADDRSPEC) == 0) {
71		uint_t opt_e = 0;
72		uint_t opt_E = 0;
73
74		/*
75		 * Determine what lists should be printed
76		 */
77		if (mdb_getopts(argc, argv,
78		    'e', MDB_OPT_SETBITS, 1, &opt_e,
79		    'E', MDB_OPT_SETBITS, 1, &opt_E) != argc)
80			return (DCMD_USAGE);
81
82		if (!opt_E) {
83			if (!sockparams_walk_list("sphead", argc, argv))
84				return (DCMD_ERR);
85		}
86
87		if (opt_e || opt_E) {
88			if (!sockparams_walk_list("sp_ephem_list", argc, argv))
89				return (DCMD_ERR);
90		}
91
92		return (DCMD_OK);
93	}
94
95	/*
96	 * If we are piping the output, then just print out the address,
97	 * otherwise summarize the sockparams info.
98	 */
99	if ((flags & DCMD_PIPE_OUT) != 0) {
100		mdb_printf("%#lr\n", addr);
101		return (DCMD_OK);
102	}
103
104	if (DCMD_HDRSPEC(flags)) {
105		mdb_printf("%-?s %3s %3s %3s %15s %15s %6s %6s\n",
106		    "ADDR", "FAM", "TYP", "PRO", "STRDEV", "SOCKMOD", "REFS",
107		    "FLGS");
108	}
109
110	if (mdb_vread(&sp, sizeof (sp), addr) == -1) {
111		mdb_warn("failed to read sockparams at %0?p", addr);
112		return (DCMD_ERR);
113	}
114
115	mdb_printf("%0?p %3u %3u %3u %15s %15s %6u %#6x\n",
116	    addr,
117	    sp.sp_family, sp.sp_type, sp.sp_protocol,
118	    (sp.sp_sdev_info.sd_devpath != 0) ?
119	    sp.sp_sdev_info.sd_devpath : "-",
120	    sp.sp_smod_name, sp.sp_refcnt,
121	    sp.sp_flags);
122
123
124	return (DCMD_OK);
125}
126
127/*
128 * Help function
129 */
130void
131sockparams_help(void)
132{
133	mdb_printf("Print sockparams information for a give sockparams ptr.\n"
134	    "Without the address, list available sockparams. Default "
135	    "behavior is to list only entries that were installed by the "
136	    "admin (via soconfig(1M)).\n\n"
137	    "Options:\n"
138	    "	-e:\t\tlist ephemeral sockparams\n"
139	    "	-E:\t\tonly list ephemeral sockparams\n");
140}
141
142static const mdb_dcmd_t dcmds[] = {
143	{ "sockparams", "[-eE]", "print sockparams", sockparams_prt,
144	    sockparams_help },
145	{ NULL }
146};
147
148static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, NULL };
149
150const mdb_modinfo_t *
151_mdb_init(void)
152{
153	return (&modinfo);
154}
155