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 * Copyright 2019 Joyent, Inc.
26 */
27
28 #include <sys/types.h>
29 #include <sys/stropts.h>
30 #include <sys/socket.h>
31 #include <sys/socketvar.h>
32
33 #include <mdb/mdb_modapi.h>
34 #include <mdb/mdb_ks.h>
35
36 /*
37 * Look up the symbol name for the given sockparams list and walk
38 * all the entries.
39 */
40 static boolean_t
sockparams_walk_list(const char * symname,int argc,const mdb_arg_t * argv)41 sockparams_walk_list(const char *symname, int argc, const mdb_arg_t *argv)
42 {
43 GElf_Sym sym;
44
45 if (mdb_lookup_by_name(symname, &sym)) {
46 mdb_warn("can't find symbol %s", symname);
47 return (B_FALSE);
48 }
49
50 if (mdb_pwalk_dcmd("list", "sockfs`sockparams", argc, argv,
51 sym.st_value) != 0) {
52 mdb_warn("can't walk %s", symname);
53 return (B_FALSE);
54 }
55
56 return (B_TRUE);
57 }
58
59 /*
60 * dcmd to print sockparams info.
61 *
62 * If no address is given then the default is to print all sockparams on the
63 * global list (i.e., installed with soconfig(1)). To also print the ephemeral
64 * entries the '-e' flag should be used. Only ephemeral entries can be printed
65 * by specifying the '-E' flag.
66 */
67 static int
sockparams_prt(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)68 sockparams_prt(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
69 {
70 struct sockparams sp;
71 char strdev[MAXPATHLEN];
72 char sockmod[MODMAXNAMELEN];
73
74 if ((flags & DCMD_ADDRSPEC) == 0) {
75 uint_t opt_e = 0;
76 uint_t opt_E = 0;
77
78 /*
79 * Determine what lists should be printed
80 */
81 if (mdb_getopts(argc, argv,
82 'e', MDB_OPT_SETBITS, 1, &opt_e,
83 'E', MDB_OPT_SETBITS, 1, &opt_E, NULL) != argc)
84 return (DCMD_USAGE);
85
86 if (!opt_E) {
87 if (!sockparams_walk_list("sphead", argc, argv))
88 return (DCMD_ERR);
89 }
90
91 if (opt_e || opt_E) {
92 if (!sockparams_walk_list("sp_ephem_list", argc, argv))
93 return (DCMD_ERR);
94 }
95
96 return (DCMD_OK);
97 }
98
99 /*
100 * If we are piping the output, then just print out the address,
101 * otherwise summarize the sockparams info.
102 */
103 if ((flags & DCMD_PIPE_OUT) != 0) {
104 mdb_printf("%#lr\n", addr);
105 return (DCMD_OK);
106 }
107
108 if (DCMD_HDRSPEC(flags)) {
109 mdb_printf("%-?s %3s %3s %3s %15s %15s %6s %6s\n",
110 "ADDR", "FAM", "TYP", "PRO", "STRDEV", "SOCKMOD", "REFS",
111 "FLGS");
112 }
113
114 if (mdb_vread(&sp, sizeof (sp), addr) == -1) {
115 mdb_warn("failed to read sockparams at %0?p", addr);
116 return (DCMD_ERR);
117 }
118
119 if ((sp.sp_sdev_info.sd_devpath == NULL) ||
120 (mdb_readstr(strdev, sizeof (strdev),
121 (uintptr_t)sp.sp_sdev_info.sd_devpath) <= 0))
122 strcpy(strdev, "-");
123 if (mdb_readstr(sockmod, sizeof (sockmod),
124 (uintptr_t)sp.sp_smod_name) <= 0)
125 strcpy(sockmod, "");
126
127 mdb_printf("%0?p %3u %3u %3u %15s %15s %6u %#6x\n",
128 addr,
129 sp.sp_family, sp.sp_type, sp.sp_protocol,
130 strdev, sockmod, sp.sp_refcnt,
131 sp.sp_flags);
132
133
134 return (DCMD_OK);
135 }
136
137 /*
138 * Help function
139 */
140 void
sockparams_help(void)141 sockparams_help(void)
142 {
143 mdb_printf("Print sockparams information for a give sockparams ptr.\n"
144 "Without the address, list available sockparams. Default "
145 "behavior is to list only entries that were installed by the "
146 "admin (via soconfig(8)).\n\n"
147 "Options:\n"
148 " -e:\t\tlist ephemeral sockparams\n"
149 " -E:\t\tonly list ephemeral sockparams\n");
150 }
151
152 static const mdb_dcmd_t dcmds[] = {
153 { "sockparams", "[-eE]", "print sockparams", sockparams_prt,
154 sockparams_help },
155 { NULL }
156 };
157
158 static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, NULL };
159
160 const mdb_modinfo_t *
_mdb_init(void)161 _mdb_init(void)
162 {
163 return (&modinfo);
164 }
165