1 /* $NetBSD: agr.c,v 1.16 2021/06/21 03:14:40 christos Exp $ */ 2 3 /*- 4 * Copyright (c)2005 YAMAMOTO Takashi, 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 #if !defined(lint) 31 __RCSID("$NetBSD: agr.c,v 1.16 2021/06/21 03:14:40 christos Exp $"); 32 #endif /* !defined(lint) */ 33 34 #include <sys/param.h> 35 #include <sys/ioctl.h> 36 37 #include <net/if.h> 38 #include <net/agr/if_agrioctl.h> 39 40 #include <ctype.h> 41 #include <err.h> 42 #include <errno.h> 43 #include <string.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <util.h> 47 48 #include "env.h" 49 #include "extern.h" 50 #include "parse.h" 51 #include "util.h" 52 53 static int agrsetport(prop_dictionary_t, prop_dictionary_t); 54 static void agr_constructor(void) __attribute__((constructor)); 55 static int checkifname(prop_dictionary_t); 56 static void assertifname(prop_dictionary_t); 57 58 static struct piface agrif = PIFACE_INITIALIZER(&agrif, "agr interface", 59 agrsetport, "agrport", &command_root.pb_parser); 60 61 static const struct kwinst agrkw[] = { 62 {.k_word = "agrport", .k_type = KW_T_INT, .k_int = AGRCMD_ADDPORT, 63 .k_nextparser = &agrif.pif_parser} 64 , {.k_word = "-agrport", .k_type = KW_T_INT, .k_int = AGRCMD_REMPORT, 65 .k_nextparser = &agrif.pif_parser} 66 }; 67 68 struct pkw agr = PKW_INITIALIZER(&agr, "agr", NULL, "agrcmd", 69 agrkw, __arraycount(agrkw), NULL); 70 71 static int 72 checkifname(prop_dictionary_t env) 73 { 74 const char *ifname; 75 76 if ((ifname = getifname(env)) == NULL) 77 return 1; 78 79 return strncmp(ifname, "agr", 3) != 0 || 80 !isdigit((unsigned char)ifname[3]); 81 } 82 83 static void 84 assertifname(prop_dictionary_t env) 85 { 86 if (checkifname(env)) 87 errx(EXIT_FAILURE, "valid only with agr(4) interfaces"); 88 } 89 90 int 91 agrsetport(prop_dictionary_t env, prop_dictionary_t oenv) 92 { 93 char buf[IFNAMSIZ]; 94 struct agrreq ar; 95 const char *port; 96 int64_t cmd; 97 98 if (!prop_dictionary_get_int64(env, "agrcmd", &cmd)) { 99 warnx("%s.%d", __func__, __LINE__); 100 errno = ENOENT; 101 return -1; 102 } 103 104 if (!prop_dictionary_get_string(env, "agrport", &port)) { 105 warnx("%s.%d", __func__, __LINE__); 106 errno = ENOENT; 107 return -1; 108 } 109 strlcpy(buf, port, sizeof(buf)); 110 111 assertifname(env); 112 memset(&ar, 0, sizeof(ar)); 113 ar.ar_version = AGRREQ_VERSION; 114 ar.ar_cmd = cmd; 115 ar.ar_buf = buf; 116 ar.ar_buflen = strlen(buf); 117 118 if (indirect_ioctl(env, SIOCSETAGR, &ar) == -1) 119 err(EXIT_FAILURE, "SIOCSETAGR"); 120 return 0; 121 } 122 123 static void 124 agr_status(prop_dictionary_t env, prop_dictionary_t oenv) 125 { 126 struct agrreq ar; 127 void *buf = NULL; 128 size_t buflen = 0; 129 struct agrportlist *apl; 130 struct agrportinfo *api; 131 int i; 132 133 if (checkifname(env)) 134 return; 135 136 again: 137 memset(&ar, 0, sizeof(ar)); 138 ar.ar_version = AGRREQ_VERSION; 139 ar.ar_cmd = AGRCMD_PORTLIST; 140 ar.ar_buf = buf; 141 ar.ar_buflen = buflen; 142 143 if (indirect_ioctl(env, SIOCGETAGR, &ar) == -1) { 144 if (errno != E2BIG) { 145 warn("SIOCGETAGR"); 146 return; 147 } 148 149 free(buf); 150 buf = NULL; 151 buflen = 0; 152 goto again; 153 } 154 155 if (buf == NULL) { 156 buflen = ar.ar_buflen; 157 buf = malloc(buflen); 158 if (buf == NULL) { 159 err(EXIT_FAILURE, "agr_status"); 160 } 161 goto again; 162 } 163 164 apl = buf; 165 api = (void *)(apl + 1); 166 167 for (i = 0; i < apl->apl_nports; i++) { 168 char tmp[256]; 169 170 snprintb(tmp, sizeof(tmp), AGRPORTINFO_BITS, api->api_flags); 171 printf("\tagrport: %s, flags=%s\n", api->api_ifname, tmp); 172 api++; 173 } 174 } 175 176 static status_func_t status; 177 static usage_func_t usage; 178 static cmdloop_branch_t branch; 179 180 static void 181 agr_usage(prop_dictionary_t env) 182 { 183 fprintf(stderr, "\t[ agrport i ] [ -agrport i ]\n"); 184 } 185 186 static void 187 agr_constructor(void) 188 { 189 status_func_init(&status, agr_status); 190 usage_func_init(&usage, agr_usage); 191 register_status(&status); 192 register_usage(&usage); 193 cmdloop_branch_init(&branch, &agr.pk_parser); 194 register_cmdloop_branch(&branch); 195 } 196
Indexes created Sat Sep 20 22:09:52 GMT 2025