Mercurial > hg > toybox
annotate toys/other/ifconfig.c @ 1193:f6f56a002d9a draft
Add /prefix netmask support to ifconfig, ala "ifconfig eth0 192.168.1.42/28"
| author | Rob Landley <rob@landley.net> |
|---|---|
| date | Tue, 04 Feb 2014 06:13:13 -0600 |
| parents | 63f8c7fa94d7 |
| children | 4f080cdb2f6e |
| rev | line source |
|---|---|
| 841 | 1 /* ifconfig.c - Configure network interface. |
| 2 * | |
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3 * Copyright 2012 Ranjan Kumar <ranjankumar.bth@gmail.com> |
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4 * Copyright 2012 Kyungwan Han <asura321@gamil.com> |
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5 * Reviewed by Kyungsu Kim <kaspyx@gmail.com> |
| 841 | 6 * |
| 7 * Not in SUSv4. | |
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8 |
| 841 | 9 USE_IFCONFIG(NEWTOY(ifconfig, "?a", TOYFLAG_BIN)) |
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10 |
| 841 | 11 config IFCONFIG |
| 12 bool "ifconfig" | |
| 921 | 13 default y |
| 841 | 14 help |
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15 usage: ifconfig [-a] [INTERFACE [ACTION...]] |
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16 |
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17 Display or configure network interface. |
| 841 | 18 |
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19 With no arguments, display active interfaces. First argument is interface |
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20 to operate on, one argument by itself displays that interface. |
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21 |
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22 -a Show all interfaces, not just active ones |
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23 |
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24 Additional arguments are actions to perform on the interface: |
| 841 | 25 |
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26 ADDRESS[/NETMASK] - set IPv4 address (1.2.3.4/5) |
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27 default - unset ipv4 address |
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28 add|del ADDRESS[/PREFIXLEN] - add/remove IPv6 address (1111::8888/128) |
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29 up - enable interface |
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30 down - disable interface |
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31 |
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32 netmask|broadcast|pointopoint ADDRESS - set more IPv4 characteristics |
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33 hw ether|infiniband ADDRESS - set LAN hardware address (AA:BB:CC...) |
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34 txqueuelen LEN - number of buffered packets before output blocks |
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35 mtu LEN - size of outgoing packets (Maximum Transmission Unit) |
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36 |
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37 Flags you can set on an interface (or -remove by prefixing with -): |
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38 arp - don't use Address Resolution Protocol to map LAN routes |
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39 promisc - don't discard packets that aren't to this LAN hardware address |
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40 multicast - force interface into multicast mode if the driver doesn't |
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41 allmulti - promisc for multicast packets |
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42 |
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43 Obsolete fields included for historical purposes: |
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44 irq|io_addr|mem_start ADDR - micromanage obsolete hardware |
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45 outfill|keepalive INTEGER - SLIP analog dialup line quality monitoring |
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46 metric INTEGER - added to Linux 0.9.10 with comment "never used", still true |
| 841 | 47 */ |
| 48 | |
| 49 #define FOR_ifconfig | |
| 50 #include "toys.h" | |
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51 |
| 841 | 52 #include <net/if_arp.h> |
| 53 #include <net/ethernet.h> | |
| 54 | |
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55 GLOBALS( |
| 921 | 56 int sockfd; |
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57 ) |
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58 |
| 841 | 59 //for ipv6 add/del |
| 60 struct ifreq_inet6 { | |
| 61 struct in6_addr ifrinte6_addr; | |
| 62 uint32_t ifrinet6_prefixlen; | |
| 63 int ifrinet6_ifindex; | |
| 64 }; | |
| 65 | |
| 1128 | 66 // Convert hostname to binary address for AF_INET or AF_INET6 |
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67 // return /prefix (or range max if none) |
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68 int get_addrinfo(char *host, sa_family_t af, void *addr) |
| 841 | 69 { |
| 1128 | 70 struct addrinfo hints, *result, *rp = 0; |
| 71 int status, len; | |
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72 char *from, *slash; |
| 841 | 73 |
| 921 | 74 memset(&hints, 0 , sizeof(struct addrinfo)); |
| 75 hints.ai_family = af; | |
| 76 hints.ai_socktype = SOCK_STREAM; | |
| 77 | |
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78 slash = strchr(host, '/'); |
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79 if (slash) *slash = 0; |
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80 |
| 921 | 81 status = getaddrinfo(host, NULL, &hints, &result); |
| 1128 | 82 if (!status) |
| 83 for (rp = result; rp; rp = rp->ai_next) | |
| 84 if (rp->ai_family == af) break; | |
| 85 if (!rp) error_exit("bad address '%s' : %s", host, gai_strerror(status)); | |
| 852 | 86 |
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87 // ai_addr isn't struct in_addr or in6_addr, it's struct sockaddr. Of course. |
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88 // You'd think ipv4 and ipv6 would have some basic compatibility, but no. |
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89 from = ((char *)rp->ai_addr) + 4; |
| 1128 | 90 if (af == AF_INET6) { |
| 91 len = 16; | |
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92 from += 4; // skip "flowinfo" field ipv6 puts before address |
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93 } else len = 4; |
| 1128 | 94 memcpy(addr, from, len); |
| 95 freeaddrinfo(result); | |
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96 |
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97 len = -1; |
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98 if (slash) len = atolx_range(slash+1, 0, (af == AF_INET) ? 128 : 32); |
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99 |
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100 return len; |
| 841 | 101 } |
| 102 | |
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103 static void display_ifconfig(char *name, int always, unsigned long long val[]) |
| 841 | 104 { |
| 105 struct ifreq ifre; | |
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106 struct { |
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107 int type; |
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108 char *title; |
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109 } types[] = { |
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110 {ARPHRD_LOOPBACK, "Local Loopback"}, {ARPHRD_ETHER, "Ethernet"}, |
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111 {ARPHRD_PPP, "Point-to-Point Protocol"}, {ARPHRD_INFINIBAND, "InfiniBand"}, |
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112 {ARPHRD_SIT, "IPv6-in-IPv4"}, {-1, "UNSPEC"} |
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113 }; |
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114 int i; |
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115 char *pp; |
| 921 | 116 FILE *fp; |
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117 short flags; |
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118 |
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119 xstrncpy(ifre.ifr_name, name, IFNAMSIZ); |
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120 if (ioctl(TT.sockfd, SIOCGIFFLAGS, &ifre)<0) perror_exit("%s", name); |
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121 flags = ifre.ifr_flags; |
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122 if (!always && !(flags & IFF_UP)) return; |
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123 |
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124 // query hardware type and hardware address |
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125 i = ioctl(TT.sockfd, SIOCGIFHWADDR, &ifre); |
| 841 | 126 |
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127 for (i=0; i < (sizeof(types)/sizeof(*types))-1; i++) |
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128 if (ifre.ifr_hwaddr.sa_family == types[i].type) break; |
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129 |
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130 xprintf("%-9s Link encap:%s ", name, types[i].title); |
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131 if(i >= 0 && ifre.ifr_hwaddr.sa_family == ARPHRD_ETHER) { |
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132 xprintf("HWaddr "); |
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133 for (i=0; i<6; i++) xprintf(":%02X"+!i, ifre.ifr_hwaddr.sa_data[i]); |
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134 } |
| 852 | 135 xputc('\n'); |
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136 |
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137 // If an address is assigned record that. |
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138 |
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139 ifre.ifr_addr.sa_family = AF_INET; |
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140 memset(&ifre.ifr_addr, 0, sizeof(ifre.ifr_addr)); |
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141 ioctl(TT.sockfd, SIOCGIFADDR, &ifre); |
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142 pp = (char *)&ifre.ifr_addr; |
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143 for (i = 0; i<sizeof(ifre.ifr_addr); i++) if (pp[i]) break; |
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144 |
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145 if (i != sizeof(ifre.ifr_addr)) { |
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146 struct sockaddr_in *si = (struct sockaddr_in *)&ifre.ifr_addr; |
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147 struct { |
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148 char *name; |
|
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149 int flag, ioctl; |
|
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150 } addr[] = { |
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151 {"addr", 0, 0}, |
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152 {"P-t-P", IFF_POINTOPOINT, SIOCGIFDSTADDR}, |
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153 {"Bcast", IFF_BROADCAST, SIOCGIFBRDADDR}, |
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154 {"Mask", 0, SIOCGIFNETMASK} |
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155 }; |
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156 |
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157 xprintf("%10c%s", ' ', (si->sin_family == AF_INET) ? "inet" : |
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158 (si->sin_family == AF_INET6) ? "inet6" : "unspec"); |
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159 |
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160 for (i=0; i < sizeof(addr)/sizeof(*addr); i++) { |
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161 if (!addr[i].flag || (flags & addr[i].flag)) { |
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162 if (addr[i].ioctl && ioctl(TT.sockfd, addr[i].ioctl, &ifre)) |
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163 si->sin_family = 0; |
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164 xprintf(" %s:%s ", addr[i].name, |
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165 (si->sin_family == 0xFFFF || !si->sin_family) |
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166 ? "[NOT SET]" : inet_ntoa(si->sin_addr)); |
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167 } |
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168 } |
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169 |
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170 xputc('\n'); |
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171 } |
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172 |
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173 fp = fopen(pp = "/proc/net/if_inet6", "r"); |
| 921 | 174 if (fp) { |
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175 char iface_name[IFNAMSIZ]; |
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176 int plen, iscope; |
| 921 | 177 |
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178 while (fgets(toybuf, sizeof(toybuf), fp)) { |
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179 int nitems; |
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180 char ipv6_addr[40]; |
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181 |
| 921 | 182 nitems = sscanf(toybuf, "%32s %*08x %02x %02x %*02x %15s\n", |
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183 ipv6_addr, &plen, &iscope, iface_name); |
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184 if (nitems<0 && feof(fp)) break; |
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185 if (nitems != 4) perror_exit("bad %s", pp); |
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186 |
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187 if (!strcmp(name, iface_name)) { |
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188 struct sockaddr_in6 s6; |
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189 char *ptr = ipv6_addr+sizeof(ipv6_addr)-1; |
| 921 | 190 |
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191 // convert giant hex string into colon-spearated ipv6 address by |
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192 // inserting ':' every 4 characters. |
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193 for (i = 32; i; i--) |
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194 if ((*(ptr--) = ipv6_addr[i])) if (!(i&3)) *(ptr--) = ':'; |
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195 |
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196 // Convert to binary and back to get abbreviated :: version |
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197 if (inet_pton(AF_INET6, ipv6_addr, (void *)&s6.sin6_addr) > 0) { |
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198 if (inet_ntop(AF_INET6, &s6.sin6_addr, toybuf, sizeof(toybuf))) { |
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199 char *scopes[] = {"Global","Host","Link","Site","Compat"}, |
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200 *scope = "Unknown"; |
| 921 | 201 |
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202 for (i=0; i < sizeof(scopes)/sizeof(*scopes); i++) |
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203 if (iscope == (!!i)<<(i+3)) scope = scopes[i]; |
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204 xprintf("%10cinet6 addr: %s/%d Scope: %s\n", |
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205 ' ', toybuf, plen, scope); |
| 921 | 206 } |
| 207 } | |
| 208 } | |
| 209 } | |
| 210 fclose(fp); | |
| 211 } | |
| 212 | |
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213 xprintf("%10c", ' '); |
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214 |
|
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215 if (flags) { |
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216 unsigned short mask = 1; |
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217 char **s, *str[] = { |
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218 "UP", "BROADCAST", "DEBUG", "LOOPBACK", "POINTOPOINT", "NOTRAILERS", |
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219 "RUNNING", "NOARP", "PROMISC", "ALLMULTI", "MASTER", "SLAVE", "MULTICAST", |
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220 "PORTSEL", "AUTOMEDIA", "DYNAMIC", NULL |
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221 }; |
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222 |
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223 for (s = str; *s; s++) { |
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224 if (flags & mask) xprintf("%s ", *s); |
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225 mask = mask << 1; |
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226 } |
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227 } else xprintf("[NO FLAGS] "); |
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228 |
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229 if (ioctl(TT.sockfd, SIOCGIFMTU, &ifre) < 0) ifre.ifr_mtu = 0; |
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230 xprintf(" MTU:%d", ifre.ifr_mtu); |
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231 if (ioctl(TT.sockfd, SIOCGIFMETRIC, &ifre) < 0) ifre.ifr_metric = 0; |
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232 if (!ifre.ifr_metric) ifre.ifr_metric = 1; |
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233 xprintf(" Metric:%d", ifre.ifr_metric); |
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234 |
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235 // non-virtual interface |
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236 |
| 1128 | 237 if (val) { |
| 870 | 238 char *label[] = {"RX bytes", "RX packets", "errors", "dropped", "overruns", |
| 239 "frame", 0, 0, "TX bytes", "TX packets", "errors", "dropped", "overruns", | |
| 240 "collisions", "carrier", 0, "txqueuelen"}; | |
| 241 signed char order[] = {-1, 1, 2, 3, 4, 5, -1, 9, 10, 11, 12, 14, -1, | |
| 242 13, 16, -1, 0, 8}; | |
| 243 int i; | |
| 244 | |
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245 // Query txqueuelen |
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246 if (ioctl(TT.sockfd, SIOCGIFTXQLEN, &ifre) >= 0) val[16] = ifre.ifr_qlen; |
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247 else val[16] = -1; |
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248 |
| 870 | 249 for (i = 0; i < sizeof(order); i++) { |
| 250 int j = order[i]; | |
| 841 | 251 |
| 870 | 252 if (j < 0) xprintf("\n%10c", ' '); |
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253 else xprintf("%s:%llu ", label[j], val[j]); |
| 870 | 254 } |
|
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255 } |
| 870 | 256 xputc('\n'); |
| 257 | |
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258 if(!ioctl(TT.sockfd, SIOCGIFMAP, &ifre) && (ifre.ifr_map.irq || |
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259 ifre.ifr_map.mem_start || ifre.ifr_map.dma || ifre.ifr_map.base_addr)) |
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260 { |
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261 xprintf("%10c", ' '); |
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262 if(ifre.ifr_map.irq) xprintf("Interrupt:%d ", ifre.ifr_map.irq); |
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263 if(ifre.ifr_map.base_addr >= 0x100) // IO_MAP_INDEX |
|
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264 xprintf("Base address:0x%lx ", ifre.ifr_map.base_addr); |
|
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265 if(ifre.ifr_map.mem_start) |
|
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266 xprintf("Memory:%lx-%lx ", ifre.ifr_map.mem_start, ifre.ifr_map.mem_end); |
|
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|
267 if(ifre.ifr_map.dma) xprintf("DMA chan:%x ", ifre.ifr_map.dma); |
| 852 | 268 xputc('\n'); |
| 841 | 269 } |
| 852 | 270 xputc('\n'); |
| 841 | 271 } |
| 272 | |
| 870 | 273 static void show_iface(char *iface_name) |
| 841 | 274 { |
|
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|
275 char *name; |
|
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|
276 struct string_list *ifaces = 0, *sl; |
| 870 | 277 int i, j; |
| 278 FILE *fp; | |
| 279 | |
| 280 fp = xfopen("/proc/net/dev", "r"); | |
| 281 | |
| 282 for (i=0; fgets(toybuf, sizeof(toybuf), fp); i++) { | |
|
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283 char *buf = toybuf; |
|
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|
284 unsigned long long val[17]; |
| 870 | 285 |
| 286 if (i<2) continue; | |
|
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|
287 |
|
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|
288 while (isspace(*buf)) buf++; |
| 870 | 289 name = strsep(&buf, ":"); |
| 290 if(!buf) error_exit("bad name %s", name); | |
| 291 | |
| 292 errno = 0; | |
|
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293 for (j=0; j<16 && !errno; j++) val[j] = strtoll(buf, &buf, 0); |
| 870 | 294 if (errno) perror_exit("bad %s at %s", name, buf); |
| 295 | |
|
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|
296 if (iface_name) { |
|
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297 if (!strcmp(iface_name, name)) { |
|
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298 display_ifconfig(iface_name, 1, val); |
|
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299 |
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300 return; |
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301 } |
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302 } else { |
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303 sl = xmalloc(sizeof(*sl)+strlen(name)+1); |
|
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304 strcpy(sl->str, name); |
|
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|
305 sl->next = ifaces; |
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|
306 ifaces = sl; |
|
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|
307 |
| 1128 | 308 display_ifconfig(sl->str, toys.optflags & FLAG_a, val); |
|
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309 } |
| 870 | 310 } |
| 311 fclose(fp); | |
|
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An ifconfig bugfix from the original submitter.
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312 |
|
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|
313 if (iface_name) display_ifconfig(iface_name, 1, 0); |
|
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|
314 else { |
|
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|
315 struct ifconf ifcon; |
|
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|
316 struct ifreq *ifre; |
|
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|
317 int num; |
|
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|
318 |
|
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|
319 // Loop until buffer's big enough |
|
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|
320 ifcon.ifc_buf = NULL; |
|
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321 for (num = 30;;num += 10) { |
|
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322 ifcon.ifc_len = sizeof(struct ifreq)*num; |
|
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323 ifcon.ifc_buf = xrealloc(ifcon.ifc_buf, ifcon.ifc_len); |
|
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324 xioctl(TT.sockfd, SIOCGIFCONF, &ifcon); |
|
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|
325 if (ifcon.ifc_len != sizeof(struct ifreq)*num) break; |
|
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326 } |
|
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|
327 |
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|
328 ifre = ifcon.ifc_req; |
|
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329 for(num = 0; num < ifcon.ifc_len && ifre; num += sizeof(struct ifreq), ifre++) |
|
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|
330 { |
|
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|
331 // Skip duplicates |
|
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|
332 for(sl = ifaces; sl; sl = sl->next) |
|
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333 if(!strcmp(sl->str, ifre->ifr_name)) break; |
|
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|
334 |
|
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|
335 if(!sl) display_ifconfig(ifre->ifr_name, toys.optflags & FLAG_a, 0); |
| 841 | 336 } |
|
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|
337 |
|
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|
338 free(ifcon.ifc_buf); |
| 841 | 339 } |
|
878
d4263ebf6f9b
Yet more drive-by cleanup of ifconfig.
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diff
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|
340 |
|
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|
341 llist_traverse(ifaces, free); |
| 841 | 342 } |
|
869
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parents:
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|
343 |
|
919
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|
344 // Encode offset and size of field into an int, and make result negative |
|
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|
345 #define IFREQ_OFFSZ(x) -(int)((offsetof(struct ifreq, x)<<16) + sizeof(ifre.x)) |
|
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|
346 |
|
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|
347 void ifconfig_main(void) |
|
571e95bdf6af
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parents:
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diff
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|
348 { |
|
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ifconfig cleanup (Reorder functions to eliminate need for prototypes, put main at end).
Rob Landley <rob@landley.net>
parents:
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diff
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|
349 char **argv = toys.optargs; |
|
898
f6db08574875
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parents:
883
diff
changeset
|
350 struct ifreq ifre; |
| 921 | 351 int i; |
|
869
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ifconfig cleanup (Reorder functions to eliminate need for prototypes, put main at end).
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parents:
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diff
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|
352 |
| 921 | 353 TT.sockfd = xsocket(AF_INET, SOCK_DGRAM, 0); |
|
878
d4263ebf6f9b
Yet more drive-by cleanup of ifconfig.
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parents:
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diff
changeset
|
354 if(toys.optc < 2) { |
| 870 | 355 show_iface(*argv); |
|
869
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ifconfig cleanup (Reorder functions to eliminate need for prototypes, put main at end).
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parents:
866
diff
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|
356 return; |
|
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ifconfig cleanup (Reorder functions to eliminate need for prototypes, put main at end).
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parents:
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diff
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|
357 } |
|
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|
358 |
|
919
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|
359 // Open interface |
|
898
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|
360 memset(&ifre, 0, sizeof(struct ifreq)); |
|
f6db08574875
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|
361 xstrncpy(ifre.ifr_name, *argv, IFNAMSIZ); |
|
869
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parents:
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diff
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|
362 |
|
919
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|
363 // Perform operations on interface |
|
898
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diff
changeset
|
364 while(*++argv) { |
| 1128 | 365 // Table of known operations |
|
905
e875b03e1fcc
Yet more ifconfig cleanup. (As described on the mailing list [CLEANUP] thread.)
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parents:
898
diff
changeset
|
366 struct argh { |
|
898
f6db08574875
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diff
changeset
|
367 char *name; |
|
906
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
Rob Landley <rob@landley.net>
parents:
905
diff
changeset
|
368 int on, off; // set, clear |
|
898
f6db08574875
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parents:
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diff
changeset
|
369 } try[] = { |
| 1128 | 370 {0, IFF_UP|IFF_RUNNING, SIOCSIFADDR}, |
|
906
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
Rob Landley <rob@landley.net>
parents:
905
diff
changeset
|
371 {"up", IFF_UP|IFF_RUNNING, 0}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
Rob Landley <rob@landley.net>
parents:
905
diff
changeset
|
372 {"down", 0, IFF_UP}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
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parents:
905
diff
changeset
|
373 {"arp", 0, IFF_NOARP}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
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parents:
905
diff
changeset
|
374 {"promisc", IFF_PROMISC, 0}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
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parents:
905
diff
changeset
|
375 {"allmulti", IFF_ALLMULTI, 0}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
Rob Landley <rob@landley.net>
parents:
905
diff
changeset
|
376 {"multicast", IFF_MULTICAST, 0}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
Rob Landley <rob@landley.net>
parents:
905
diff
changeset
|
377 {"pointopoint", IFF_POINTOPOINT, SIOCSIFDSTADDR}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
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parents:
905
diff
changeset
|
378 {"broadcast", IFF_BROADCAST, SIOCSIFBRDADDR}, |
|
ce0a9368b82f
Next round of ifconfig cleanup, to be described on mailing list.
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parents:
905
diff
changeset
|
379 {"netmask", 0, SIOCSIFNETMASK}, |
|
919
a186f9a1406d
More ifconfig cleanup, described on list.
Rob Landley <rob@landley.net>
parents:
907
diff
changeset
|
380 {"dstaddr", 0, SIOCSIFDSTADDR}, |
|
a186f9a1406d
More ifconfig cleanup, described on list.
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parents:
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diff
changeset
|
381 {"mtu", IFREQ_OFFSZ(ifr_mtu), SIOCSIFMTU}, |
| 921 | 382 {"keepalive", IFREQ_OFFSZ(ifr_data), SIOCDEVPRIVATE}, // SIOCSKEEPALIVE |
| 383 {"outfill", IFREQ_OFFSZ(ifr_data), SIOCDEVPRIVATE+2}, // SIOCSOUTFILL | |
|
919
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More ifconfig cleanup, described on list.
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parents:
907
diff
changeset
|
384 {"metric", IFREQ_OFFSZ(ifr_metric), SIOCSIFMETRIC}, |
|
a186f9a1406d
More ifconfig cleanup, described on list.
Rob Landley <rob@landley.net>
parents:
907
diff
changeset
|
385 {"txqueuelen", IFREQ_OFFSZ(ifr_qlen), SIOCSIFTXQLEN}, |
|
a186f9a1406d
More ifconfig cleanup, described on list.
Rob Landley <rob@landley.net>
parents:
907
diff
changeset
|
386 {"mem_start", IFREQ_OFFSZ(ifr_map.mem_start), SIOCSIFMAP}, |
|
a186f9a1406d
More ifconfig cleanup, described on list.
Rob Landley <rob@landley.net>
parents:
907
diff
changeset
|
387 {"io_addr", IFREQ_OFFSZ(ifr_map.base_addr), SIOCSIFMAP}, |
|
a186f9a1406d
More ifconfig cleanup, described on list.
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parents:
907
diff
changeset
|
388 {"irq", IFREQ_OFFSZ(ifr_map.irq), SIOCSIFMAP}, |
|
a186f9a1406d
More ifconfig cleanup, described on list.
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parents:
907
diff
changeset
|
389 {"inet", 0, 0}, |
|
a186f9a1406d
More ifconfig cleanup, described on list.
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parents:
907
diff
changeset
|
390 {"inet6", 0, 0} |
|
898
f6db08574875
Ifconfig cleanup to option parsing.
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parents:
883
diff
changeset
|
391 }; |
|
f6db08574875
Ifconfig cleanup to option parsing.
Rob Landley <rob@landley.net>
parents:
883
diff
changeset
|
392 char *s = *argv; |
|
f6db08574875
Ifconfig cleanup to option parsing.
Rob Landley <rob@landley.net>
parents:
883
diff
changeset
|
393 int rev = (*s == '-'); |
|
869
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ifconfig cleanup (Reorder functions to eliminate need for prototypes, put main at end).
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parents:
866
diff
changeset
|
394 |
|
898
f6db08574875
Ifconfig cleanup to option parsing.
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parents:
883
diff
changeset
|
395 s += rev; |
|
f6db08574875
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Rob Landley <rob@landley.net>
parents:
883
diff
changeset
|
396 |
| 1128 | 397 // "set hardware address" is oddball enough to special case |
| 398 if (!strcmp(*argv, "hw")) { | |
| 399 char *hw_addr, *ptr, *p; | |
| 400 struct sockaddr *sock = &ifre.ifr_hwaddr; | |
| 401 int count = 6; | |
| 402 | |
| 403 ptr = p = (char *)sock->sa_data; | |
| 404 memset(sock, 0, sizeof(struct sockaddr)); | |
| 405 if (!argv[1]) { | |
| 406 if (!strcmp("ether", *++argv)) sock->sa_family = ARPHRD_ETHER; | |
| 407 else if (!strcmp("infiniband", *argv)) { | |
| 408 sock->sa_family = ARPHRD_INFINIBAND; | |
| 409 count = 20; | |
| 410 p = ptr = toybuf; | |
| 411 } | |
| 412 } | |
| 413 if (!sock->sa_family || !argv[1]) { | |
| 414 toys.exithelp++; | |
| 415 error_exit("bad hw '%s'", *argv); | |
| 416 } | |
| 417 hw_addr = *++argv; | |
| 418 | |
| 419 // Parse and verify address. | |
| 420 while (*hw_addr && (p-ptr) < count) { | |
| 421 int val, len = 0; | |
| 422 | |
| 423 if (*hw_addr == ':') hw_addr++; | |
| 424 sscanf(hw_addr, "%2x%n", &val, &len); | |
| 425 if (len != 2) break; | |
| 426 hw_addr += len; | |
| 427 *p++ = val; | |
| 428 } | |
| 429 | |
| 430 if ((p-ptr) != count || *hw_addr) | |
| 431 error_exit("bad hw-addr '%s'", hw_addr ? hw_addr : ""); | |
| 432 | |
| 433 // the linux kernel's "struct sockaddr" (include/linux/socket.h in the | |
| 434 // kernel source) only has 14 bytes of sa_data, and an infiniband address | |
| 435 // is 20. So if we go through the ioctl, the kernel will truncate | |
| 436 // infiniband addresses, meaning we have to go through sysfs instead. | |
| 437 if (sock->sa_family == ARPHRD_INFINIBAND && !strchr(ifre.ifr_name, '/')) { | |
| 438 int fd; | |
| 439 | |
| 440 sprintf(toybuf, "/sys/class/net/%s/address", ifre.ifr_name); | |
| 441 fd = xopen(toybuf, O_RDWR); | |
| 442 xwrite(fd, *argv, strlen(*argv)); | |
| 443 close(fd); | |
| 444 } else xioctl(TT.sockfd, SIOCSIFHWADDR, &ifre); | |
| 445 continue; | |
| 446 | |
| 447 // Add/remove ipv6 address to interface | |
| 448 | |
| 449 } else if (!strcmp(*argv, "add") || !strcmp(*argv, "del")) { | |
| 450 struct ifreq_inet6 { | |
| 451 struct in6_addr addr; | |
| 452 unsigned prefix; | |
| 453 int index; | |
| 454 } ifre6; | |
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455 int plen, fd6 = xsocket(AF_INET6, SOCK_DGRAM, 0); |
| 1128 | 456 |
| 457 if (!argv[1]) { | |
| 458 toys.exithelp++; | |
| 459 error_exit(*argv); | |
| 460 } | |
| 461 | |
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462 plen = get_addrinfo(argv[1], AF_INET6, &ifre6.addr); |
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463 if (plen < 0) plen = 128; |
| 1128 | 464 xioctl(fd6, SIOCGIFINDEX, &ifre); |
| 465 ifre6.index = ifre.ifr_ifindex; | |
| 466 ifre6.prefix = plen; | |
| 467 xioctl(fd6, **(argv++)=='a' ? SIOCSIFADDR : SIOCDIFADDR, &ifre6); | |
| 468 | |
| 469 close(fd6); | |
| 470 continue; | |
| 471 // Iterate through table to find/perform operation | |
| 472 } else for (i = 0; i < sizeof(try)/sizeof(*try); i++) { | |
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473 struct argh *t = try+i; |
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474 int on = t->on, off = t->off; |
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475 |
| 1128 | 476 if (!t->name) { |
| 477 if (isdigit(**argv) || !strcmp(*argv, "default")) argv--; | |
| 478 else continue; | |
| 479 } else if (strcmp(t->name, s)) continue; | |
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480 |
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481 // Is this an SIOCSI entry? |
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482 if ((off|0xff) == 0x89ff) { |
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483 if (!rev) { |
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484 if (!*++argv) error_exit("%s needs argument", t->name); |
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485 |
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486 // Assign value to ifre field and call ioctl? (via IFREQ_OFFSZ.) |
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487 if (on < 0) { |
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488 long l = strtoul(*argv, 0, 0); |
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489 |
| 921 | 490 if (off == SIOCSIFMAP) xioctl(TT.sockfd, SIOCGIFMAP, &ifre); |
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491 on = -on; |
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492 poke((on>>16) + (char *)&ifre, l, on&15); |
| 921 | 493 xioctl(TT.sockfd, off, &ifre); |
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494 break; |
| 1128 | 495 } else if (t->name || !strchr(ifre.ifr_name, ':')) { |
| 496 struct sockaddr_in *si = (struct sockaddr_in *)&ifre.ifr_addr; | |
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497 int mask = -1; |
| 1128 | 498 |
| 499 si->sin_family = AF_INET; | |
| 500 | |
| 501 if (!strcmp(*argv, "default")) si->sin_addr.s_addr = INADDR_ANY; | |
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502 else mask = get_addrinfo(*argv, AF_INET, &si->sin_addr); |
| 1128 | 503 xioctl(TT.sockfd, off, &ifre); |
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504 |
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505 // Handle /netmask |
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506 if (mask >= 0) { |
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507 // sin_addr probably isn't unaligned, but just in case... |
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508 mask = htonl((~0)<<(32-mask)); |
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509 memcpy(&si->sin_addr, &mask, 4); |
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510 xioctl(TT.sockfd, SIOCSIFNETMASK, &ifre); |
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511 } |
| 1128 | 512 } |
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513 } |
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514 off = 0; |
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515 } |
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516 |
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517 // Set flags |
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518 if (on || off) { |
| 921 | 519 xioctl(TT.sockfd, SIOCGIFFLAGS, &ifre); |
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520 ifre.ifr_flags &= ~(rev ? on : off); |
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521 ifre.ifr_flags |= (rev ? off : on); |
| 921 | 522 xioctl(TT.sockfd, SIOCSIFFLAGS, &ifre); |
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523 } |
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524 |
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525 break; |
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526 } |
| 1128 | 527 if (i == sizeof(try)/sizeof(*try)) { |
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528 toys.exithelp++; |
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529 error_exit("bad argument '%s'", *argv); |
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530 } |
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531 } |
| 921 | 532 close(TT.sockfd); |
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533 } |