granicus.if.org Git - strace/blob - sock.c

   1 /*
   2  * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "defs.h"
  29 #include <sys/socket.h>
  30 #if defined ALPHA || defined SH || defined SH64
  31 # include <linux/ioctl.h>
  32 #endif
  33 #include <linux/sockios.h>
  34 #include <arpa/inet.h>
  35 #include <net/if.h>
  36
  37 #include "xlat/iffflags.h"
  38
  39 static void
  40 print_ifreq_addr(struct tcb *tcp, const struct ifreq *ifr, const long addr)
  41 {
  42         tprintf("{");
  43         printxval(addrfams, ifr->ifr_addr.sa_family, "AF_???");
  44         tprints(", ");
  45         if (ifr->ifr_addr.sa_family == AF_INET) {
  46                 const struct sockaddr_in *sinp =
  47                         (struct sockaddr_in *) &ifr->ifr_addr;
  48                 tprintf("inet_addr(\"%s\")", inet_ntoa(sinp->sin_addr));
  49         } else
  50                 printstr(tcp, addr + offsetof(struct ifreq, ifr_addr.sa_data),
  51                          sizeof(ifr->ifr_addr.sa_data));
  52         tprints("}");
  53 }
  54
  55 static void
  56 print_ifname(const char *ifname)
  57 {
  58         print_quoted_string(ifname, IFNAMSIZ + 1, QUOTE_0_TERMINATED);
  59 }
  60
  61 static void
  62 print_ifreq(struct tcb *tcp, const unsigned int code, const long arg,
  63             const struct ifreq *ifr)
  64 {
  65         switch (code) {
  66         case SIOCSIFADDR:
  67         case SIOCGIFADDR:
  68                 tprints("ifr_addr=");
  69                 print_ifreq_addr(tcp, ifr, arg);
  70                 break;
  71         case SIOCSIFDSTADDR:
  72         case SIOCGIFDSTADDR:
  73                 tprints("ifr_dstaddr=");
  74                 print_ifreq_addr(tcp, ifr, arg);
  75                 break;
  76         case SIOCSIFBRDADDR:
  77         case SIOCGIFBRDADDR:
  78                 tprints("ifr_broadaddr=");
  79                 print_ifreq_addr(tcp, ifr, arg);
  80                 break;
  81         case SIOCSIFNETMASK:
  82         case SIOCGIFNETMASK:
  83                 tprints("ifr_netmask=");
  84                 print_ifreq_addr(tcp, ifr, arg);
  85                 break;
  86         case SIOCSIFHWADDR:
  87         case SIOCGIFHWADDR: {
  88                 /* XXX Are there other hardware addresses
  89                    than 6-byte MACs?  */
  90                 const unsigned char *bytes =
  91                         (unsigned char *) &ifr->ifr_hwaddr.sa_data;
  92                 tprintf("ifr_hwaddr=%02x:%02x:%02x:%02x:%02x:%02x",
  93                         bytes[0], bytes[1], bytes[2],
  94                         bytes[3], bytes[4], bytes[5]);
  95                 break;
  96         }
  97         case SIOCSIFFLAGS:
  98         case SIOCGIFFLAGS:
  99                 tprints("ifr_flags=");
 100                 printflags(iffflags, (unsigned short) ifr->ifr_flags, "IFF_???");
 101                 break;
 102         case SIOCSIFMETRIC:
 103         case SIOCGIFMETRIC:
 104                 tprintf("ifr_metric=%d", ifr->ifr_metric);
 105                 break;
 106         case SIOCSIFMTU:
 107         case SIOCGIFMTU:
 108                 tprintf("ifr_mtu=%d", ifr->ifr_mtu);
 109                 break;
 110         case SIOCSIFSLAVE:
 111         case SIOCGIFSLAVE:
 112                 tprints("ifr_slave=");
 113                 print_ifname(ifr->ifr_slave);
 114                 break;
 115         case SIOCSIFTXQLEN:
 116         case SIOCGIFTXQLEN:
 117                 tprintf("ifr_qlen=%d", ifr->ifr_qlen);
 118                 break;
 119         case SIOCSIFMAP:
 120         case SIOCGIFMAP:
 121                 tprintf("ifr_map={mem_start=%#lx, "
 122                         "mem_end=%#lx, base_addr=%#x, "
 123                         "irq=%u, dma=%u, port=%u}",
 124                         ifr->ifr_map.mem_start,
 125                         ifr->ifr_map.mem_end,
 126                         (unsigned) ifr->ifr_map.base_addr,
 127                         (unsigned) ifr->ifr_map.irq,
 128                         (unsigned) ifr->ifr_map.dma,
 129                         (unsigned) ifr->ifr_map.port);
 130                 break;
 131         }
 132 }
 133
 134 static unsigned int
 135 print_ifc_len(int len)
 136 {
 137         const unsigned int n = (unsigned int) len / sizeof(struct ifreq);
 138
 139         if (len < 0 || n * sizeof(struct ifreq) != (unsigned int) len)
 140                 tprintf("%d", len);
 141         else
 142                 tprintf("%u * sizeof(struct ifreq)", n);
 143
 144         return n;
 145 }
 146
 147 static int
 148 decode_ifconf(struct tcb *tcp, const long addr)
 149 {
 150         struct ifconf ifc;
 151
 152         if (entering(tcp)) {
 153                 tprints(", ");
 154                 if (umove_or_printaddr(tcp, addr, &ifc))
 155                         return RVAL_DECODED | 1;
 156                 if (ifc.ifc_buf) {
 157                         tprints("{");
 158                         print_ifc_len(ifc.ifc_len);
 159                 }
 160                 return 1;
 161         }
 162
 163         if (syserror(tcp) || umove(tcp, addr, &ifc) < 0) {
 164                 if (ifc.ifc_buf)
 165                         tprints("}");
 166                 else
 167                         printaddr(addr);
 168                 return RVAL_DECODED | 1;
 169         }
 170
 171         if (!ifc.ifc_buf) {
 172                 tprints("{");
 173                 print_ifc_len(ifc.ifc_len);
 174                 tprints(", NULL}");
 175                 return RVAL_DECODED | 1;
 176         }
 177
 178         tprints(" => ");
 179         const unsigned int nifra = print_ifc_len(ifc.ifc_len);
 180         if (!nifra) {
 181                 tprints("}");
 182                 return RVAL_DECODED | 1;
 183         }
 184
 185         struct ifreq ifra[nifra > max_strlen ? max_strlen : nifra];
 186         tprints(", ");
 187         if (umove_or_printaddr(tcp, (unsigned long) ifc.ifc_buf, &ifra)) {
 188                 tprints("}");
 189                 return RVAL_DECODED | 1;
 190         }
 191
 192         tprints("[");
 193         unsigned int i;
 194         for (i = 0; i < ARRAY_SIZE(ifra); ++i) {
 195                 if (i > 0)
 196                         tprints(", ");
 197                 tprints("{ifr_name=");
 198                 print_ifname(ifra[i].ifr_name);
 199                 tprints(", ");
 200                 if (verbose(tcp)) {
 201                         tprints("ifr_addr=");
 202                         print_ifreq_addr(tcp, &ifra[i],
 203                                          addr + i * sizeof(ifra[0]));
 204                 } else
 205                         tprints("...");
 206                 tprints("}");
 207         }
 208         if (i < nifra)
 209                 tprints(", ...");
 210         tprints("]}");
 211
 212         return RVAL_DECODED | 1;
 213 }
 214
 215 int
 216 sock_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
 217 {
 218         struct ifreq ifr;
 219
 220         switch (code) {
 221         case SIOCGIFCONF:
 222                 return decode_ifconf(tcp, arg);
 223
 224 #ifdef SIOCBRADDBR
 225         case SIOCBRADDBR:
 226         case SIOCBRDELBR:
 227                 tprints(", ");
 228                 printstr(tcp, arg, -1);
 229                 break;
 230 #endif
 231
 232 #ifdef FIOSETOWN
 233         case FIOSETOWN:
 234 #endif
 235 #ifdef SIOCSPGRP
 236         case SIOCSPGRP:
 237 #endif
 238                 tprints(", ");
 239                 printnum_int(tcp, arg, "%d");
 240                 break;
 241
 242 #ifdef FIOGETOWN
 243         case FIOGETOWN:
 244 #endif
 245 #ifdef SIOCGPGRP
 246         case SIOCGPGRP:
 247 #endif
 248 #ifdef SIOCATMARK
 249         case SIOCATMARK:
 250 #endif
 251                 if (entering(tcp))
 252                         return 0;
 253                 tprints(", ");
 254                 printnum_int(tcp, arg, "%d");
 255                 break;
 256
 257 #ifdef SIOCBRADDIF
 258         case SIOCBRADDIF:
 259 #endif
 260 #ifdef SIOCBRDELIF
 261         case SIOCBRDELIF:
 262 #endif
 263                 /* no arguments */
 264                 break;
 265
 266         case SIOCSIFNAME:
 267         case SIOCSIFADDR:
 268         case SIOCSIFDSTADDR:
 269         case SIOCSIFBRDADDR:
 270         case SIOCSIFNETMASK:
 271         case SIOCSIFFLAGS:
 272         case SIOCSIFMETRIC:
 273         case SIOCSIFMTU:
 274         case SIOCSIFSLAVE:
 275         case SIOCSIFHWADDR:
 276         case SIOCSIFTXQLEN:
 277         case SIOCSIFMAP:
 278                 tprints(", ");
 279                 if (umove_or_printaddr(tcp, arg, &ifr))
 280                         break;
 281
 282                 tprints("{ifr_name=");
 283                 print_ifname(ifr.ifr_name);
 284                 tprints(", ");
 285                 if (code == SIOCSIFNAME) {
 286                         tprints("ifr_newname=");
 287                         print_ifname(ifr.ifr_newname);
 288                 } else {
 289                         print_ifreq(tcp, code, arg, &ifr);
 290                 }
 291                 tprints("}");
 292                 break;
 293
 294         case SIOCGIFNAME:
 295         case SIOCGIFINDEX:
 296         case SIOCGIFADDR:
 297         case SIOCGIFDSTADDR:
 298         case SIOCGIFBRDADDR:
 299         case SIOCGIFNETMASK:
 300         case SIOCGIFFLAGS:
 301         case SIOCGIFMETRIC:
 302         case SIOCGIFMTU:
 303         case SIOCGIFSLAVE:
 304         case SIOCGIFHWADDR:
 305         case SIOCGIFTXQLEN:
 306         case SIOCGIFMAP:
 307                 if (entering(tcp)) {
 308                         tprints(", ");
 309                         if (umove_or_printaddr(tcp, arg, &ifr))
 310                                 break;
 311
 312                         if (SIOCGIFNAME == code) {
 313                                 tprintf("{ifr_index=%d", ifr.ifr_ifindex);
 314                         } else {
 315                                 tprints("{ifr_name=");
 316                                 print_ifname(ifr.ifr_name);
 317                         }
 318                         return 1;
 319                 } else {
 320                         if (syserror(tcp)) {
 321                                 tprints("}");
 322                                 break;
 323                         }
 324
 325                         tprints(", ");
 326                         if (umove(tcp, arg, &ifr) < 0) {
 327                                 tprints("???}");
 328                                 break;
 329                         }
 330
 331                         if (SIOCGIFNAME == code) {
 332                                 tprints("ifr_name=");
 333                                 print_ifname(ifr.ifr_name);
 334                         } else {
 335                                 print_ifreq(tcp, code, arg, &ifr);
 336                         }
 337                         tprints("}");
 338                         break;
 339                 }
 340
 341         default:
 342                 return RVAL_DECODED;
 343         }
 344
 345         return RVAL_DECODED | 1;
 346 }