xref: /titanic_41/usr/src/cmd/mdb/common/modules/sockfs/sockfs.c (revision 2e3183c027b6ee946250860898d7ae82b066348a)
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  */
38 static boolean_t
sockparams_walk_list(const char * symname,int argc,const mdb_arg_t * argv)39 sockparams_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  */
65 static int
sockparams_prt(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)66 sockparams_prt(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
67 {
68 	struct sockparams sp;
69 	char strdev[MAXPATHLEN];
70 	char sockmod[MODMAXNAMELEN];
71 
72 	if ((flags & DCMD_ADDRSPEC) == 0) {
73 		uint_t opt_e = 0;
74 		uint_t opt_E = 0;
75 
76 		/*
77 		 * Determine what lists should be printed
78 		 */
79 		if (mdb_getopts(argc, argv,
80 		    'e', MDB_OPT_SETBITS, 1, &opt_e,
81 		    'E', MDB_OPT_SETBITS, 1, &opt_E) != argc)
82 			return (DCMD_USAGE);
83 
84 		if (!opt_E) {
85 			if (!sockparams_walk_list("sphead", argc, argv))
86 				return (DCMD_ERR);
87 		}
88 
89 		if (opt_e || opt_E) {
90 			if (!sockparams_walk_list("sp_ephem_list", argc, argv))
91 				return (DCMD_ERR);
92 		}
93 
94 		return (DCMD_OK);
95 	}
96 
97 	/*
98 	 * If we are piping the output, then just print out the address,
99 	 * otherwise summarize the sockparams info.
100 	 */
101 	if ((flags & DCMD_PIPE_OUT) != 0) {
102 		mdb_printf("%#lr\n", addr);
103 		return (DCMD_OK);
104 	}
105 
106 	if (DCMD_HDRSPEC(flags)) {
107 		mdb_printf("%-?s %3s %3s %3s %15s %15s %6s %6s\n",
108 		    "ADDR", "FAM", "TYP", "PRO", "STRDEV", "SOCKMOD", "REFS",
109 		    "FLGS");
110 	}
111 
112 	if (mdb_vread(&sp, sizeof (sp), addr) == -1) {
113 		mdb_warn("failed to read sockparams at %0?p", addr);
114 		return (DCMD_ERR);
115 	}
116 
117 	if ((sp.sp_sdev_info.sd_devpath == NULL) ||
118 	    (mdb_readstr(strdev, sizeof (strdev),
119 	    (uintptr_t)sp.sp_sdev_info.sd_devpath) <= 0))
120 		strcpy(strdev, "-");
121 	if (mdb_readstr(sockmod, sizeof (sockmod),
122 	    (uintptr_t)sp.sp_smod_name) <= 0)
123 		strcpy(sockmod, "");
124 
125 	mdb_printf("%0?p %3u %3u %3u %15s %15s %6u %#6x\n",
126 	    addr,
127 	    sp.sp_family, sp.sp_type, sp.sp_protocol,
128 	    strdev, sockmod, sp.sp_refcnt,
129 	    sp.sp_flags);
130 
131 
132 	return (DCMD_OK);
133 }
134 
135 /*
136  * Help function
137  */
138 void
sockparams_help(void)139 sockparams_help(void)
140 {
141 	mdb_printf("Print sockparams information for a give sockparams ptr.\n"
142 	    "Without the address, list available sockparams. Default "
143 	    "behavior is to list only entries that were installed by the "
144 	    "admin (via soconfig(1M)).\n\n"
145 	    "Options:\n"
146 	    "	-e:\t\tlist ephemeral sockparams\n"
147 	    "	-E:\t\tonly list ephemeral sockparams\n");
148 }
149 
150 static const mdb_dcmd_t dcmds[] = {
151 	{ "sockparams", "[-eE]", "print sockparams", sockparams_prt,
152 	    sockparams_help },
153 	{ NULL }
154 };
155 
156 static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, NULL };
157 
158 const mdb_modinfo_t *
_mdb_init(void)159 _mdb_init(void)
160 {
161 	return (&modinfo);
162 }
163