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 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 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 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 * 161 _mdb_init(void) 162 { 163 return (&modinfo); 164 } 165