1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | /* |
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4 | * Copyright (c) 1983, 1993 |
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5 | * The Regents of the University of California. All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * 4. Neither the name of the University nor the names of its contributors |
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16 | * may be used to endorse or promote products derived from this software |
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17 | * without specific prior written permission. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 | * SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #ifndef lint |
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33 | static const char rcsid[] = |
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34 | "$FreeBSD$"; |
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35 | #endif /* not lint */ |
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36 | |
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37 | #ifdef __rtems__ |
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38 | #include <machine/rtems-bsd-program.h> |
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39 | #endif /* __rtems__ */ |
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40 | #include <sys/queue.h> |
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41 | #include <sys/types.h> |
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42 | #include <sys/ioctl.h> |
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43 | #include <sys/socket.h> |
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44 | #include <net/if.h> |
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45 | |
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46 | #include <err.h> |
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47 | #include <stdio.h> |
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48 | #include <stdlib.h> |
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49 | #include <string.h> |
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50 | #include <unistd.h> |
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51 | |
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52 | #include "ifconfig.h" |
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53 | |
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54 | static void |
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55 | list_cloners(void) |
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56 | { |
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57 | struct if_clonereq ifcr; |
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58 | char *cp, *buf; |
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59 | int idx; |
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60 | int s; |
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61 | |
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62 | s = socket(AF_LOCAL, SOCK_DGRAM, 0); |
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63 | if (s == -1) |
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64 | err(1, "socket(AF_LOCAL,SOCK_DGRAM)"); |
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65 | |
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66 | memset(&ifcr, 0, sizeof(ifcr)); |
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67 | |
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68 | if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0) |
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69 | err(1, "SIOCIFGCLONERS for count"); |
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70 | |
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71 | buf = malloc(ifcr.ifcr_total * IFNAMSIZ); |
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72 | if (buf == NULL) |
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73 | err(1, "unable to allocate cloner name buffer"); |
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74 | |
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75 | ifcr.ifcr_count = ifcr.ifcr_total; |
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76 | ifcr.ifcr_buffer = buf; |
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77 | |
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78 | if (ioctl(s, SIOCIFGCLONERS, &ifcr) < 0) { |
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79 | free(buf); |
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80 | err(1, "SIOCIFGCLONERS for names"); |
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81 | } |
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82 | |
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83 | /* |
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84 | * In case some disappeared in the mean time, clamp it down. |
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85 | */ |
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86 | if (ifcr.ifcr_count > ifcr.ifcr_total) |
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87 | ifcr.ifcr_count = ifcr.ifcr_total; |
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88 | |
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89 | for (cp = buf, idx = 0; idx < ifcr.ifcr_count; idx++, cp += IFNAMSIZ) { |
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90 | if (idx > 0) |
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91 | putchar(' '); |
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92 | printf("%s", cp); |
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93 | } |
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94 | |
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95 | putchar('\n'); |
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96 | free(buf); |
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97 | } |
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98 | |
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99 | struct clone_defcb { |
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100 | char ifprefix[IFNAMSIZ]; |
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101 | clone_callback_func *clone_cb; |
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102 | SLIST_ENTRY(clone_defcb) next; |
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103 | }; |
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104 | |
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105 | static SLIST_HEAD(, clone_defcb) clone_defcbh = |
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106 | SLIST_HEAD_INITIALIZER(clone_defcbh); |
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107 | |
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108 | void |
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109 | clone_setdefcallback(const char *ifprefix, clone_callback_func *p) |
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110 | { |
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111 | struct clone_defcb *dcp; |
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112 | |
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113 | dcp = malloc(sizeof(*dcp)); |
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114 | #ifndef __rtems__ |
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115 | if (dcp == NULL) { |
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116 | errx(1, "unable to allocate clone"); |
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117 | } |
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118 | #endif /* __rtems__ */ |
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119 | strlcpy(dcp->ifprefix, ifprefix, IFNAMSIZ-1); |
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120 | dcp->clone_cb = p; |
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121 | SLIST_INSERT_HEAD(&clone_defcbh, dcp, next); |
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122 | } |
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123 | |
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124 | /* |
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125 | * Do the actual clone operation. Any parameters must have been |
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126 | * setup by now. If a callback has been setup to do the work |
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127 | * then defer to it; otherwise do a simple create operation with |
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128 | * no parameters. |
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129 | */ |
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130 | static void |
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131 | ifclonecreate(int s, void *arg) |
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132 | { |
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133 | struct ifreq ifr; |
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134 | struct clone_defcb *dcp; |
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135 | clone_callback_func *clone_cb = NULL; |
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136 | |
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137 | memset(&ifr, 0, sizeof(ifr)); |
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138 | (void) strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); |
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139 | |
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140 | if (clone_cb == NULL) { |
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141 | /* Try to find a default callback */ |
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142 | SLIST_FOREACH(dcp, &clone_defcbh, next) { |
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143 | if (strncmp(dcp->ifprefix, ifr.ifr_name, |
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144 | strlen(dcp->ifprefix)) == 0) { |
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145 | clone_cb = dcp->clone_cb; |
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146 | break; |
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147 | } |
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148 | } |
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149 | } |
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150 | if (clone_cb == NULL) { |
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151 | /* NB: no parameters */ |
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152 | if (ioctl(s, SIOCIFCREATE2, &ifr) < 0) |
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153 | err(1, "SIOCIFCREATE2"); |
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154 | } else { |
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155 | clone_cb(s, &ifr); |
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156 | } |
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157 | |
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158 | /* |
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159 | * If we get a different name back than we put in, print it. |
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160 | */ |
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161 | if (strncmp(name, ifr.ifr_name, sizeof(name)) != 0) { |
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162 | strlcpy(name, ifr.ifr_name, sizeof(name)); |
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163 | printf("%s\n", name); |
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164 | } |
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165 | } |
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166 | |
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167 | static |
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168 | DECL_CMD_FUNC(clone_create, arg, d) |
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169 | { |
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170 | callback_register(ifclonecreate, NULL); |
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171 | } |
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172 | |
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173 | static |
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174 | DECL_CMD_FUNC(clone_destroy, arg, d) |
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175 | { |
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176 | (void) strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); |
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177 | if (ioctl(s, SIOCIFDESTROY, &ifr) < 0) |
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178 | err(1, "SIOCIFDESTROY"); |
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179 | } |
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180 | |
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181 | static struct cmd clone_cmds[] = { |
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182 | DEF_CLONE_CMD("create", 0, clone_create), |
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183 | DEF_CMD("destroy", 0, clone_destroy), |
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184 | DEF_CLONE_CMD("plumb", 0, clone_create), |
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185 | DEF_CMD("unplumb", 0, clone_destroy), |
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186 | }; |
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187 | |
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188 | static void |
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189 | clone_Copt_cb(const char *optarg __unused) |
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190 | { |
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191 | list_cloners(); |
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192 | exit(0); |
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193 | } |
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194 | static struct option clone_Copt = { .opt = "C", .opt_usage = "[-C]", .cb = clone_Copt_cb }; |
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195 | |
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196 | #ifndef __rtems__ |
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197 | static __constructor void |
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198 | #else /* __rtems__ */ |
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199 | void |
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200 | #endif /* __rtems__ */ |
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201 | clone_ctor(void) |
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202 | { |
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203 | #ifdef __rtems__ |
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204 | SLIST_INIT(&clone_defcbh); |
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205 | #endif /* __rtems__ */ |
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206 | #define N(a) (sizeof(a) / sizeof(a[0])) |
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207 | size_t i; |
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208 | |
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209 | for (i = 0; i < N(clone_cmds); i++) |
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210 | cmd_register(&clone_cmds[i]); |
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211 | opt_register(&clone_Copt); |
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212 | #undef N |
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213 | } |
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214 | #ifdef __rtems__ |
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215 | void |
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216 | clone_dtor(void) |
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217 | { |
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218 | struct clone_defcb *dcp; |
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219 | struct clone_defcb *dcp_tmp; |
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220 | |
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221 | SLIST_FOREACH_SAFE(dcp, &clone_defcbh, next, dcp_tmp) { |
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222 | free(dcp); |
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223 | } |
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224 | } |
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225 | #endif /* __rtems__ */ |
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