1 | /* |
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2 | * Copyright (c) 2016 Chris Johns <chrisj@rtems.org>. All rights reserved. |
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3 | * |
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4 | * Redistribution and use in source and binary forms, with or without |
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5 | * modification, are permitted provided that the following conditions |
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6 | * are met: |
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7 | * 1. Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * 2. Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * |
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13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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14 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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16 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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17 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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18 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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19 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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20 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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21 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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22 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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23 | * SUCH DAMAGE. |
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24 | */ |
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25 | |
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26 | /* |
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27 | * Handle the networking directives found in rc.conf. |
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28 | * - ifconfig_* |
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29 | * - cloned_interfaces |
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30 | * - autobridge_interfaces |
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31 | * - autobridge_bridge* |
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32 | * - defaultrouter |
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33 | */ |
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34 | |
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35 | #include <sys/param.h> |
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36 | #include <sys/types.h> |
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37 | #include <sys/queue.h> |
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38 | #include <sys/kernel.h> |
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39 | #include <sysexits.h> |
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40 | |
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41 | #include <ifaddrs.h> |
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42 | #include <net/if.h> |
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43 | #include <net/route.h> |
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44 | #include <netinet/in.h> |
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45 | #include <sys/socket.h> |
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46 | |
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47 | #include <errno.h> |
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48 | #include <stddef.h> |
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49 | #include <stdio.h> |
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50 | #include <stdlib.h> |
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51 | #include <sys/stat.h> |
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52 | #include <unistd.h> |
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53 | |
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54 | #include <rtems.h> |
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55 | #include <rtems/chain.h> |
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56 | |
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57 | #include <machine/rtems-bsd-commands.h> |
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58 | #include <machine/rtems-bsd-rc-conf-services.h> |
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59 | |
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60 | #include <rtems/rtems-routes.h> |
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61 | |
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62 | /* |
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63 | * Default defaultroute_delay is 30seconds. |
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64 | */ |
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65 | static int defaultroute_delay_secs = 30; |
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66 | |
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67 | /* |
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68 | * Show a result. |
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69 | */ |
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70 | static void |
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71 | show_result(const char* label, int r) |
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72 | { |
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73 | if (r < 0) |
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74 | fprintf(stderr, "error: %s: %s\n", label, strerror(errno)); |
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75 | } |
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76 | |
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77 | /* |
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78 | * cloned_interfaces |
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79 | * |
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80 | * eg cloned_interfaces="vlan0 bridge0 tap1 tap2" |
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81 | * |
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82 | * See 'man rc.conf(5)' on FreeBSD. |
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83 | */ |
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84 | static int |
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85 | cloned_interfaces(rtems_bsd_rc_conf* rc_conf, rtems_bsd_rc_conf_argc_argv* aa) |
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86 | { |
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87 | int arg; |
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88 | int r = 0; |
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89 | |
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90 | r = rtems_bsd_rc_conf_find(rc_conf, "cloned_interfaces", aa); |
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91 | if (r < 0) { |
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92 | if (errno == ENOENT) |
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93 | r = 0; |
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94 | return r; |
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95 | } |
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96 | |
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97 | for (arg = 1; arg < aa->argc; ++arg) { |
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98 | const char* ifconfg_args[] = { |
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99 | "ifconfig", aa->argv[arg], "create", NULL |
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100 | }; |
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101 | rtems_bsd_rc_conf_print_cmd(rc_conf, "cloning_interfaces", 3, ifconfg_args); |
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102 | rtems_bsd_command_ifconfig(3, (char**) ifconfg_args); |
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103 | } |
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104 | |
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105 | return 0; |
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106 | } |
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107 | |
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108 | /* |
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109 | * create_args_'interface' |
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110 | * |
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111 | * eg create_args_myvlan="vlan 102" |
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112 | * |
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113 | * See 'man rc.conf(5)' on FreeBSD. |
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114 | */ |
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115 | typedef struct { |
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116 | rtems_chain_node node; |
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117 | const char* label; |
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118 | int argc; |
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119 | const char** argv; |
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120 | } create_args_item; |
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121 | |
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122 | static RTEMS_CHAIN_DEFINE_EMPTY(create_args_items); |
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123 | |
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124 | static int |
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125 | load_create_args(rtems_bsd_rc_conf* rc_conf, rtems_bsd_rc_conf_argc_argv* aa) |
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126 | { |
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127 | int r = 0; |
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128 | |
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129 | r = rtems_bsd_rc_conf_find(rc_conf, "create_args_.*", aa); |
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130 | |
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131 | while (r == 0) { |
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132 | rtems_chain_node* node; |
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133 | const char* label; |
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134 | create_args_item* item; |
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135 | int arg; |
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136 | |
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137 | rtems_bsd_rc_conf_print_cmd(rc_conf, "create_args_", aa->argc, aa->argv); |
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138 | |
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139 | label = aa->argv[0] + strlen("create_args_"); |
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140 | |
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141 | node = rtems_chain_first(&create_args_items); |
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142 | |
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143 | while (!rtems_chain_is_tail(&create_args_items, node)) { |
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144 | item = (create_args_item*) node; |
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145 | if (strcasecmp(item->label, label) == 0) { |
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146 | fprintf(stderr, "error: %s:%d: duplicate create args entry: %s\n", |
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147 | rtems_bsd_rc_conf_name(rc_conf), |
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148 | rtems_bsd_rc_conf_line(rc_conf), |
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149 | aa->argv[0]); |
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150 | errno = EEXIST; |
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151 | return -1; |
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152 | } |
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153 | node = rtems_chain_next(node); |
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154 | } |
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155 | |
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156 | item = calloc(1, sizeof(*item)); |
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157 | if (item == NULL) { |
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158 | errno = ENOMEM; |
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159 | fprintf(stderr, "error: %s:%d: %s\n", |
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160 | rtems_bsd_rc_conf_name(rc_conf), |
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161 | rtems_bsd_rc_conf_line(rc_conf), |
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162 | strerror(errno)); |
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163 | return -1; |
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164 | } |
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165 | |
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166 | item->argc = aa->argc; |
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167 | |
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168 | item->label = strdup(label); |
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169 | if (item->label == NULL) { |
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170 | free(item); |
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171 | errno = ENOMEM; |
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172 | fprintf(stderr, "error: %s:%d: %s\n", |
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173 | rtems_bsd_rc_conf_name(rc_conf), |
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174 | rtems_bsd_rc_conf_line(rc_conf), |
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175 | strerror(errno)); |
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176 | return -1; |
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177 | } |
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178 | |
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179 | item->argv = calloc(aa->argc + 1, sizeof(char*)); |
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180 | if (item->argv == NULL) { |
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181 | free((void*) item->label); |
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182 | free(item); |
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183 | errno = ENOMEM; |
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184 | fprintf(stderr, "error: %s:%d: %s\n", |
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185 | rtems_bsd_rc_conf_name(rc_conf), |
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186 | rtems_bsd_rc_conf_line(rc_conf), |
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187 | strerror(errno)); |
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188 | return -1; |
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189 | } |
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190 | |
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191 | for (arg = 0; arg < aa->argc; ++arg) { |
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192 | item->argv[arg] = strdup(aa->argv[0]); |
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193 | if (item->argv[arg] == NULL) { |
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194 | int a; |
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195 | for (a = 0; a < arg; ++a) |
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196 | free((void*) item->argv[a]); |
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197 | free(item->argv); |
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198 | free((void*) item->label); |
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199 | free(item); |
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200 | errno = ENOMEM; |
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201 | fprintf(stderr, "error: %s:%d: %s\n", |
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202 | rtems_bsd_rc_conf_name(rc_conf), |
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203 | rtems_bsd_rc_conf_line(rc_conf), |
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204 | strerror(errno)); |
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205 | return -1; |
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206 | } |
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207 | } |
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208 | |
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209 | rtems_chain_append(&create_args_items, &item->node); |
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210 | |
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211 | r = rtems_bsd_rc_conf_find_next(rc_conf, aa); |
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212 | } |
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213 | |
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214 | /* |
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215 | * ignore not found. |
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216 | */ |
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217 | if (r < 0 && errno == ENOENT) |
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218 | r = 0; |
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219 | |
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220 | return 0; |
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221 | } |
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222 | |
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223 | /* |
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224 | * ifconfig_show |
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225 | |
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226 | */ |
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227 | static int |
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228 | ifconfig_show(const char* ifname) |
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229 | { |
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230 | const char const* ifconfig_show[] = { "ifconfig", ifname, NULL }; |
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231 | return rtems_bsd_command_ifconfig(2, (char**) ifconfig_show); |
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232 | } |
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233 | |
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234 | /* |
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235 | * ifconfig_'interface' |
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236 | * |
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237 | * eg ifconfig_em0="inet 10.10.5.33 netmask 255.255.255.0" |
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238 | * ifconfig_em0_alias0="ether 10:22:33:44:55:66" |
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239 | * ifconfig_em0_alias1="inet 10.1.1.111 netmask 0xffffffff" |
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240 | * |
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241 | * See 'man rc.conf(5)' on FreeBSD. |
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242 | */ |
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243 | static int |
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244 | ifconfig_(rtems_bsd_rc_conf* rc_conf, |
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245 | const char* ifname, |
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246 | int argc, |
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247 | const char** argv, |
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248 | int opt_argc, |
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249 | const char** opt_argv, |
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250 | bool add_up) |
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251 | { |
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252 | const char** args; |
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253 | int arg; |
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254 | int ifconfig_argc = 0; |
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255 | int r; |
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256 | |
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257 | for (arg = 1; arg < argc; ++arg) { |
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258 | if (strcasecmp(argv[arg], "NOAUTO") == 0) |
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259 | return 0; |
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260 | } |
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261 | |
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262 | args = calloc(argc + opt_argc + 3, sizeof(char*)); |
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263 | if (args == NULL) { |
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264 | errno = ENOMEM; |
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265 | return -1; |
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266 | } |
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267 | |
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268 | args[ifconfig_argc++] = "ifconfig"; |
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269 | args[ifconfig_argc++] = ifname; |
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270 | |
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271 | for (arg = 1; arg < argc; ++arg) { |
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272 | if (strcasecmp("DHCP", argv[arg]) == 0 || |
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273 | strcasecmp("SYNCDHCP", argv[arg]) == 0 || |
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274 | strcasecmp("UP", argv[arg]) == 0) { |
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275 | add_up = false; |
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276 | } |
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277 | else { |
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278 | args[ifconfig_argc++] = argv[arg]; |
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279 | } |
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280 | } |
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281 | |
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282 | if (opt_argv != NULL) { |
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283 | for (arg = 0; arg < opt_argc; ++arg) { |
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284 | args[ifconfig_argc++] = opt_argv[arg]; |
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285 | } |
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286 | } |
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287 | |
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288 | if (add_up) |
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289 | args[ifconfig_argc++] = "up"; |
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290 | |
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291 | rtems_bsd_rc_conf_print_cmd(rc_conf, "ifconfig", ifconfig_argc, args); |
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292 | |
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293 | r = rtems_bsd_command_ifconfig(ifconfig_argc, (char**) args); |
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294 | |
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295 | free(args); |
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296 | |
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297 | if (r != EX_OK) { |
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298 | errno = ECANCELED; |
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299 | return -1; |
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300 | } |
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301 | |
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302 | return r; |
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303 | } |
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304 | |
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305 | /* |
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306 | * hostname |
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307 | * |
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308 | * eg hostname="myhost" |
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309 | * |
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310 | * See 'man rc.conf(5)' on FreeBSD. |
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311 | */ |
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312 | static int |
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313 | hostname(rtems_bsd_rc_conf* rc_conf, rtems_bsd_rc_conf_argc_argv* aa) |
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314 | { |
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315 | const char** argv; |
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316 | int r; |
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317 | const char const* default_argv[] = { "hostname", "Amnesiac", NULL }; |
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318 | |
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319 | r = rtems_bsd_rc_conf_find(rc_conf, "hostname", aa); |
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320 | if (r < 0 && errno != ENOENT) |
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321 | return -1; |
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322 | |
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323 | if (r < 0 || (r == 0 && aa->argc != 2)) { |
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324 | argv = default_argv; |
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325 | } |
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326 | else { |
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327 | argv = aa->argv; |
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328 | } |
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329 | |
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330 | fprintf(stdout, "Setting hostname: %s.\n", argv[1]); |
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331 | |
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332 | return sethostname(argv[1], strlen(argv[1])); |
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333 | } |
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334 | |
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335 | /* |
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336 | * defaultrouter |
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337 | * |
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338 | * eg defaultrouter="1.2.3.4" |
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339 | * |
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340 | * See 'man rc.conf(5)' on FreeBSD. |
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341 | */ |
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342 | static int |
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343 | defaultrouter(rtems_bsd_rc_conf* rc_conf, rtems_bsd_rc_conf_argc_argv* aa, bool dhcp) |
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344 | { |
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345 | int r; |
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346 | |
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347 | if (dhcp) { |
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348 | char* end = NULL; |
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349 | int delay = 30; |
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350 | |
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351 | /* |
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352 | * See if a delay is specified else use default to 30 seconds. Wait for a |
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353 | * valid default route. |
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354 | */ |
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355 | r = rtems_bsd_rc_conf_find(rc_conf, "defaultroute_delay", aa); |
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356 | if (r == 0 && aa->argc == 2) { |
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357 | delay = (int) strtol(aa->argv[1], &end, 10); |
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358 | if (*end != '\0') { |
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359 | fprintf(stderr, "error: defaultroute_delay: invalid delay value\n"); |
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360 | delay = 30; |
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361 | } |
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362 | } |
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363 | |
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364 | printf("Waiting %ds for default route interface: ", delay); |
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365 | fflush(stdout); |
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366 | |
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367 | while (delay > 0) { |
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368 | struct sockaddr_in sin; |
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369 | struct sockaddr* rti_info[RTAX_MAX]; |
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370 | |
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371 | --delay; |
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372 | |
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373 | memset(&sin, 0, sizeof(sin)); |
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374 | memset(&rti_info[0], 0, sizeof(rti_info)); |
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375 | sin.sin_family = AF_INET; |
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376 | inet_pton(AF_INET, "0.0.0.0", &sin.sin_addr); |
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377 | |
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378 | r = rtems_get_route(&sin, rti_info); |
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379 | if (r == 0 && rti_info[RTAX_GATEWAY] != NULL) { |
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380 | break; |
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381 | } |
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382 | else if (r < 0 && errno != ESRCH) { |
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383 | fprintf(stderr, |
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384 | "error: get routes %d: %d %s\n", r, errno, strerror(errno)); |
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385 | } |
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386 | |
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387 | sleep(1); |
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388 | } |
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389 | |
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390 | /* |
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391 | * We should print the interface but I cannot see how to get the interface |
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392 | * with the default route without a lot of code. |
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393 | */ |
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394 | if (delay > 0) { |
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395 | printf("found.\n"); |
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396 | return 0; |
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397 | } |
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398 | |
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399 | printf("\nerror: no default route found, try defaultrouter\n"); |
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400 | } |
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401 | |
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402 | r = rtems_bsd_rc_conf_find(rc_conf, "defaultrouter", aa); |
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403 | if (r < 0 && errno != ENOENT) |
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404 | return -1; |
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405 | |
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406 | if (r == 0) { |
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407 | if (aa->argc > 2) { |
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408 | errno = EINVAL; |
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409 | return -1; |
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410 | } |
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411 | |
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412 | if (strcasecmp(aa->argv[1], "NO") != 0) { |
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413 | const char* args[] = { "route", "add", "default", aa->argv[1], NULL }; |
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414 | |
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415 | rtems_bsd_rc_conf_print_cmd(rc_conf, "defaultrouter", 4, args); |
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416 | |
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417 | r = rtems_bsd_command_route(4, (char**) args); |
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418 | if (r != EX_OK) { |
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419 | errno = ECANCELED; |
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420 | return -1; |
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421 | } |
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422 | } |
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423 | } |
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424 | |
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425 | return 0; |
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426 | } |
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427 | |
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428 | static int |
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429 | list_interfaces(const char* msg, struct ifaddrs* ifap) |
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430 | { |
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431 | struct ifaddrs* ifa; |
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432 | |
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433 | fprintf(stdout, msg); |
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434 | |
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435 | /* |
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436 | * Always have lo0 first. |
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437 | */ |
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438 | |
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439 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { |
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440 | if (strcasecmp("lo0", ifa->ifa_name) == 0) { |
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441 | fprintf(stdout, "%s ", ifa->ifa_name); |
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442 | break; |
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443 | } |
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444 | } |
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445 | |
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446 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { |
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447 | if (strcasecmp("lo0", ifa->ifa_name) != 0) { |
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448 | fprintf(stdout, "%s ", ifa->ifa_name); |
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449 | } |
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450 | } |
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451 | |
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452 | fprintf(stdout, "\b.\n"); |
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453 | |
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454 | return 0; |
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455 | } |
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456 | |
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457 | static int |
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458 | show_interfaces(struct ifaddrs* ifap) |
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459 | { |
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460 | struct ifaddrs* ifa; |
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461 | |
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462 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { |
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463 | ifconfig_show(ifa->ifa_name); |
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464 | } |
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465 | |
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466 | return 0; |
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467 | } |
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468 | |
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469 | static int |
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470 | dhcp_check(rtems_bsd_rc_conf_argc_argv* aa) |
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471 | { |
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472 | int arg; |
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473 | for (arg = 0; arg < aa->argc; ++arg) { |
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474 | if (strcasestr(aa->argv[1], "DHCP") != NULL || |
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475 | strcasestr(aa->argv[1], "SYNCDHCP") != NULL) |
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476 | return true; |
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477 | } |
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478 | return false; |
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479 | } |
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480 | |
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481 | static int |
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482 | setup_lo0(rtems_bsd_rc_conf* rc_conf, struct ifaddrs* ifap) |
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483 | { |
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484 | struct ifaddrs* ifa; |
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485 | |
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486 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { |
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487 | if (strcasecmp("lo0", ifa->ifa_name) == 0) { |
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488 | const char* lo0_argv[] = { |
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489 | "ifconfig_lo0", "inet", "127.0.0.1", "netmask", "255.0.0.0", NULL |
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490 | }; |
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491 | show_result("lo0", |
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492 | ifconfig_(rc_conf, "lo0", |
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493 | 5, lo0_argv, |
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494 | 0, NULL, |
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495 | true)); |
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496 | return 0; |
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497 | } |
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498 | } |
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499 | |
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500 | fprintf(stderr, "warning: no loopback interface found\n"); |
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501 | |
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502 | return -1; |
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503 | } |
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504 | |
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505 | static int |
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506 | setup_interfaces(rtems_bsd_rc_conf* rc_conf, |
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507 | rtems_bsd_rc_conf_argc_argv* aa, |
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508 | struct ifaddrs* ifap, |
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509 | bool* dhcp) |
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510 | { |
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511 | struct ifaddrs* ifa; |
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512 | int r; |
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513 | |
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514 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { |
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515 | if (strcasecmp("lo0", ifa->ifa_name) != 0) { |
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516 | char iface[64]; |
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517 | snprintf(iface, sizeof(iface), "ifconfig_%s", ifa->ifa_name); |
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518 | r = rtems_bsd_rc_conf_find(rc_conf, iface, aa); |
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519 | if (r == 0) { |
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520 | if (dhcp_check(aa)) { |
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521 | *dhcp = true; |
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522 | } |
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523 | /* |
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524 | * A DHCP ifconfig can have other options we need to set on the |
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525 | * interface. |
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526 | */ |
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527 | show_result(iface, ifconfig_(rc_conf, ifa->ifa_name, |
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528 | aa->argc, aa->argv, |
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529 | 0, NULL, |
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530 | true)); |
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531 | } |
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532 | snprintf(iface, sizeof(iface), "ifconfig_%s_alias[0-9]+", ifa->ifa_name); |
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533 | if (r == 0) { |
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534 | r = rtems_bsd_rc_conf_find(rc_conf, iface, aa); |
---|
535 | while (r == 0) { |
---|
536 | const char* alias_argv[] = { "alias", NULL }; |
---|
537 | show_result(iface, |
---|
538 | ifconfig_(rc_conf, ifa->ifa_name, |
---|
539 | aa->argc, aa->argv, |
---|
540 | 1, alias_argv, |
---|
541 | false)); |
---|
542 | r = rtems_bsd_rc_conf_find_next(rc_conf, aa); |
---|
543 | } |
---|
544 | } |
---|
545 | } |
---|
546 | } |
---|
547 | |
---|
548 | return 0; |
---|
549 | } |
---|
550 | |
---|
551 | static int |
---|
552 | setup_vlans(rtems_bsd_rc_conf* rc_conf, |
---|
553 | rtems_bsd_rc_conf_argc_argv* aa, |
---|
554 | struct ifaddrs* ifap, |
---|
555 | bool* dhcp) |
---|
556 | { |
---|
557 | rtems_bsd_rc_conf_argc_argv* vaa; |
---|
558 | struct ifaddrs* ifa; |
---|
559 | |
---|
560 | vaa = rtems_bsd_rc_conf_argc_argv_create(); |
---|
561 | if (vaa == NULL) |
---|
562 | return -1; |
---|
563 | |
---|
564 | show_result("create_args", load_create_args(rc_conf, aa)); |
---|
565 | |
---|
566 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { |
---|
567 | if (strcasecmp("lo0", ifa->ifa_name) != 0) { |
---|
568 | char expr[128]; |
---|
569 | int r; |
---|
570 | /* |
---|
571 | * Look for vlans_'iface'="101 102 103" |
---|
572 | */ |
---|
573 | snprintf(expr, sizeof(expr), "vlans_%s", ifa->ifa_name); |
---|
574 | r = rtems_bsd_rc_conf_find(rc_conf, expr, aa); |
---|
575 | if (r == 0) { |
---|
576 | int arg; |
---|
577 | for (arg = 1; arg < aa->argc; ++arg) { |
---|
578 | char vlan_name[64]; |
---|
579 | const char* vlan_create[] = { |
---|
580 | "ifconfig", vlan_name, "create", NULL |
---|
581 | }; |
---|
582 | /* |
---|
583 | * Create the VLAN name as 'iface'.'vlan'. |
---|
584 | */ |
---|
585 | snprintf(vlan_name, sizeof(vlan_name), |
---|
586 | "%s.%s", ifa->ifa_name, aa->argv[arg]); |
---|
587 | rtems_bsd_rc_conf_print_cmd(rc_conf, "vlan", 3, vlan_create); |
---|
588 | r = rtems_bsd_command_ifconfig(3, (char**) vlan_create); |
---|
589 | if (r == 0) { |
---|
590 | /* |
---|
591 | * Look for ifconfig_'iface'_'vlan'="..." |
---|
592 | */ |
---|
593 | snprintf(expr, sizeof(expr), |
---|
594 | "ifconfig_%s_%s", ifa->ifa_name, aa->argv[arg]); |
---|
595 | r = rtems_bsd_rc_conf_find(rc_conf, expr, vaa); |
---|
596 | if (r == 0) { |
---|
597 | if (dhcp_check(vaa)) { |
---|
598 | *dhcp = true; |
---|
599 | } |
---|
600 | else { |
---|
601 | show_result(vlan_name, |
---|
602 | ifconfig_(rc_conf, vlan_name, |
---|
603 | vaa->argc, vaa->argv, |
---|
604 | 0, NULL, |
---|
605 | true)); |
---|
606 | } |
---|
607 | } |
---|
608 | } |
---|
609 | } |
---|
610 | } |
---|
611 | } |
---|
612 | } |
---|
613 | |
---|
614 | rtems_bsd_rc_conf_argc_argv_destroy(vaa); |
---|
615 | |
---|
616 | return 0; |
---|
617 | } |
---|
618 | |
---|
619 | /* |
---|
620 | * The rc_conf struct cannot be passed to a thread as a pointer. It can only be |
---|
621 | * used in the rc.conf worker thread. As a result the values needed to print a |
---|
622 | * verbose message to aid debugging need to have local copies made and passed |
---|
623 | * to the dhcpcd worker. The dhcpcd worker should run for ever. Clean up the |
---|
624 | * memory if it exits. |
---|
625 | */ |
---|
626 | typedef struct dhcpcd_data { |
---|
627 | rtems_bsd_rc_conf_argc_argv* argc_argv; |
---|
628 | bool verbose; |
---|
629 | const char* name; |
---|
630 | } dhcpcd_data; |
---|
631 | |
---|
632 | static void |
---|
633 | dhcpcd_worker(rtems_task_argument arg) |
---|
634 | { |
---|
635 | dhcpcd_data* dd = (dhcpcd_data*) arg; |
---|
636 | int argc; |
---|
637 | const char** argv; |
---|
638 | const char* dhcpcd_argv[] = { "dhcpcd", NULL }; |
---|
639 | struct stat sb; |
---|
640 | int r; |
---|
641 | |
---|
642 | r = stat("/var", &sb); |
---|
643 | if (r < 0) { |
---|
644 | mkdir("/var", S_IRWXU | S_IRWXG | S_IRWXO); |
---|
645 | } |
---|
646 | |
---|
647 | r = stat("/var/db", &sb); |
---|
648 | if (r < 0) { |
---|
649 | mkdir("/var/db", S_IRWXU | S_IRWXG | S_IRWXO); |
---|
650 | } |
---|
651 | |
---|
652 | if (dd->argc_argv->argc > 0) { |
---|
653 | argc = dd->argc_argv->argc; |
---|
654 | argv = dd->argc_argv->argv; |
---|
655 | } |
---|
656 | else { |
---|
657 | argc = 1; |
---|
658 | argv = dhcpcd_argv; |
---|
659 | } |
---|
660 | |
---|
661 | if (dd->verbose) { |
---|
662 | fprintf(stdout, "rc.conf: %s: dhcpcd ", dd->name); |
---|
663 | for (r = 1; r < argc; ++r) |
---|
664 | fprintf(stdout, "%s ", argv[r]); |
---|
665 | fprintf(stdout, "\n"); |
---|
666 | } |
---|
667 | |
---|
668 | r = rtems_bsd_command_dhcpcd(argc, argv); |
---|
669 | if (r != EX_OK) |
---|
670 | fprintf(stderr, "error: dhcpcd: stopped\n"); |
---|
671 | |
---|
672 | free(dd->name); |
---|
673 | rtems_bsd_rc_conf_argc_argv_destroy(dd->argc_argv); |
---|
674 | free(dd); |
---|
675 | |
---|
676 | rtems_task_delete(RTEMS_SELF); |
---|
677 | } |
---|
678 | |
---|
679 | static int |
---|
680 | run_dhcp(rtems_bsd_rc_conf* rc_conf, rtems_bsd_rc_conf_argc_argv* aa) |
---|
681 | { |
---|
682 | dhcpcd_data* dd; |
---|
683 | rtems_status_code sc; |
---|
684 | rtems_id id; |
---|
685 | rtems_task_priority priority = RTEMS_MAXIMUM_PRIORITY - 1; |
---|
686 | char* end = NULL; |
---|
687 | int r; |
---|
688 | |
---|
689 | /* |
---|
690 | * These are passed to the worker and cleaned up there if it ever exits. Do |
---|
691 | * not destroy here unless an error before the thread runs. |
---|
692 | */ |
---|
693 | dd = calloc(1, sizeof(*dd)); |
---|
694 | if (dd == NULL) { |
---|
695 | fprintf(stderr, "error: dhcpcd data: no memory\n"); |
---|
696 | errno = ENOMEM; |
---|
697 | return -1; |
---|
698 | } |
---|
699 | |
---|
700 | dd->name = strdup(rtems_bsd_rc_conf_name(rc_conf)); |
---|
701 | if (dd == NULL) { |
---|
702 | free(dd); |
---|
703 | fprintf(stderr, "error: dhcpcd data: no memory\n"); |
---|
704 | errno = ENOMEM; |
---|
705 | return -1; |
---|
706 | } |
---|
707 | |
---|
708 | dd->argc_argv = rtems_bsd_rc_conf_argc_argv_create(); |
---|
709 | if (dd->argc_argv == NULL) { |
---|
710 | free(dd->name); |
---|
711 | free(dd); |
---|
712 | errno = ENOMEM; |
---|
713 | return -1; |
---|
714 | } |
---|
715 | |
---|
716 | dd->verbose = rtems_bsd_rc_conf_verbose(rc_conf); |
---|
717 | |
---|
718 | r = rtems_bsd_rc_conf_find(rc_conf, "dhcpcd_priority", dd->argc_argv); |
---|
719 | if (r == 0) { |
---|
720 | if (dd->argc_argv->argc == 2) { |
---|
721 | priority = strtoul(dd->argc_argv->argv[1], &end, 10); |
---|
722 | if (priority == 0 || *end != '\0') |
---|
723 | priority = RTEMS_MAXIMUM_PRIORITY - 1; |
---|
724 | } |
---|
725 | } |
---|
726 | |
---|
727 | rtems_bsd_rc_conf_find(rc_conf, "dhcpcd_options", dd->argc_argv); |
---|
728 | |
---|
729 | sc = rtems_task_create(rtems_build_name('D', 'H', 'C', 'P'), |
---|
730 | priority, |
---|
731 | 2 * RTEMS_MINIMUM_STACK_SIZE, |
---|
732 | RTEMS_DEFAULT_MODES, |
---|
733 | RTEMS_FLOATING_POINT, |
---|
734 | &id); |
---|
735 | if (sc == RTEMS_SUCCESSFUL) |
---|
736 | sc = rtems_task_start(id, dhcpcd_worker, (rtems_task_argument) dd); |
---|
737 | if (sc != RTEMS_SUCCESSFUL) { |
---|
738 | fprintf(stderr, |
---|
739 | "error: dhcpcd: thread create/start: %s\n", rtems_status_text(sc)); |
---|
740 | rtems_bsd_rc_conf_argc_argv_destroy(dd->argc_argv); |
---|
741 | free(dd->name); |
---|
742 | free(dd); |
---|
743 | errno = EIO; |
---|
744 | return -1; |
---|
745 | } |
---|
746 | |
---|
747 | /* |
---|
748 | * Let it run before moving on. |
---|
749 | */ |
---|
750 | sleep(1); |
---|
751 | |
---|
752 | return 0; |
---|
753 | } |
---|
754 | |
---|
755 | static int |
---|
756 | interfaces(rtems_bsd_rc_conf* rc_conf, rtems_bsd_rc_conf_argc_argv* aa) |
---|
757 | { |
---|
758 | struct ifaddrs* ifap; |
---|
759 | bool dhcp = false; |
---|
760 | |
---|
761 | if (getifaddrs(&ifap) != 0) { |
---|
762 | fprintf(stderr, "error: interfaces: getifaddrs: %s\n", strerror(errno)); |
---|
763 | return -1; |
---|
764 | } |
---|
765 | |
---|
766 | list_interfaces("Starting network: ", ifap); |
---|
767 | show_result("cloned_interfaces", cloned_interfaces(rc_conf, aa)); |
---|
768 | show_result("lo0", setup_lo0(rc_conf, ifap)); |
---|
769 | show_result("ifaces", setup_interfaces(rc_conf, aa, ifap, &dhcp)); |
---|
770 | show_result("vlans", setup_vlans(rc_conf, aa, ifap, &dhcp)); |
---|
771 | show_interfaces(ifap); |
---|
772 | |
---|
773 | if (dhcp) |
---|
774 | show_result("dhcp", run_dhcp(rc_conf, aa)); |
---|
775 | show_result("defaultrouter", defaultrouter(rc_conf, aa, dhcp)); |
---|
776 | |
---|
777 | free(ifap); |
---|
778 | |
---|
779 | return 0; |
---|
780 | } |
---|
781 | |
---|
782 | static int |
---|
783 | network_service(rtems_bsd_rc_conf* rc_conf) |
---|
784 | { |
---|
785 | rtems_bsd_rc_conf_argc_argv* aa; |
---|
786 | int r; |
---|
787 | |
---|
788 | aa = rtems_bsd_rc_conf_argc_argv_create(); |
---|
789 | if (aa == NULL) |
---|
790 | return -1; |
---|
791 | |
---|
792 | show_result("hostname", hostname(rc_conf, aa)); |
---|
793 | |
---|
794 | r = interfaces(rc_conf, aa); |
---|
795 | if (r < 0) { |
---|
796 | rtems_bsd_rc_conf_argc_argv_destroy(aa); |
---|
797 | return -1; |
---|
798 | } |
---|
799 | |
---|
800 | rtems_bsd_rc_conf_argc_argv_destroy(aa); |
---|
801 | |
---|
802 | return 0; |
---|
803 | } |
---|
804 | |
---|
805 | void |
---|
806 | rc_conf_net_init(void* arg) |
---|
807 | { |
---|
808 | int r; |
---|
809 | r = rtems_bsd_rc_conf_service_add("network", |
---|
810 | "after:first;", |
---|
811 | network_service); |
---|
812 | if (r < 0) |
---|
813 | fprintf(stderr, |
---|
814 | "error: network service add failed: %s\n", strerror(errno)); |
---|
815 | } |
---|