2 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
3 * Copyright (c) 1996-2017 The strace developers.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #include <sys/socket.h>
32 #if defined ALPHA || defined SH || defined SH64
33 # include <linux/ioctl.h>
35 #include <linux/sockios.h>
36 #include <arpa/inet.h>
39 #include DEF_MPERS_TYPE(struct_ifconf)
40 #include DEF_MPERS_TYPE(struct_ifreq)
42 typedef struct ifconf struct_ifconf;
43 typedef struct ifreq struct_ifreq;
47 #include "xlat/iffflags.h"
49 #define PRINT_IFREQ_ADDR(tcp, ifr, sockaddr) \
51 tprints(#sockaddr "="); \
52 print_sockaddr(tcp, &((ifr)->sockaddr), \
53 sizeof((ifr)->sockaddr)); \
57 print_ifname(const char *ifname)
59 print_quoted_string(ifname, IFNAMSIZ + 1, QUOTE_0_TERMINATED);
63 print_ifreq(struct tcb *const tcp, const unsigned int code,
64 const kernel_ulong_t arg, const struct_ifreq *const ifr)
69 PRINT_IFREQ_ADDR(tcp, ifr, ifr_addr);
73 PRINT_IFREQ_ADDR(tcp, ifr, ifr_dstaddr);
77 PRINT_IFREQ_ADDR(tcp, ifr, ifr_broadaddr);
81 PRINT_IFREQ_ADDR(tcp, ifr, ifr_netmask);
85 /* XXX Are there other hardware addresses
87 const unsigned char *bytes =
88 (unsigned char *) &ifr->ifr_hwaddr.sa_data;
89 tprintf("ifr_hwaddr=%02x:%02x:%02x:%02x:%02x:%02x",
90 bytes[0], bytes[1], bytes[2],
91 bytes[3], bytes[4], bytes[5]);
96 tprints("ifr_flags=");
97 printflags(iffflags, (unsigned short) ifr->ifr_flags, "IFF_???");
101 tprintf("ifr_metric=%d", ifr->ifr_metric);
105 tprintf("ifr_mtu=%d", ifr->ifr_mtu);
109 tprints("ifr_slave=");
110 print_ifname(ifr->ifr_slave);
114 tprintf("ifr_qlen=%d", ifr->ifr_qlen);
118 tprintf("ifr_map={mem_start=%#" PRI_klx ", "
119 "mem_end=%#" PRI_klx ", base_addr=%#x, "
120 "irq=%u, dma=%u, port=%u}",
121 (kernel_ulong_t) ifr->ifr_map.mem_start,
122 (kernel_ulong_t) ifr->ifr_map.mem_end,
123 (unsigned) ifr->ifr_map.base_addr,
124 (unsigned) ifr->ifr_map.irq,
125 (unsigned) ifr->ifr_map.dma,
126 (unsigned) ifr->ifr_map.port);
132 print_ifc_len(int len)
134 const unsigned int n = (unsigned int) len / sizeof(struct_ifreq);
136 if (len < 0 || n * sizeof(struct_ifreq) != (unsigned int) len)
139 tprintf("%u * sizeof(struct ifreq)", n);
145 print_ifconf_ifreq(struct tcb *tcp, void *elem_buf, size_t elem_size,
148 struct_ifreq *ifr = elem_buf;
150 tprints("{ifr_name=");
151 print_ifname(ifr->ifr_name);
153 PRINT_IFREQ_ADDR(tcp, ifr, ifr_addr);
160 * There are two different modes of operation:
162 * - Get buffer size. In this case, the callee sets ifc_buf to NULL,
163 * and the kernel returns the buffer size in ifc_len.
164 * - Get actual data. In this case, the callee specifies the buffer address
165 * in ifc_buf and its size in ifc_len. The kernel fills the buffer with
166 * the data, and its amount is returned in ifc_len.
168 * Note that, technically, the whole struct ifconf is overwritten,
169 * so ifc_buf could be different on exit, but current ioctl handler
170 * implementation does not touch it.
173 decode_ifconf(struct tcb *const tcp, const kernel_ulong_t addr)
175 struct_ifconf *entering_ifc = NULL;
177 entering(tcp) ? malloc(sizeof(*ifc)) : alloca(sizeof(*ifc));
180 entering_ifc = get_tcb_priv_data(tcp);
183 error_msg("decode_ifconf: where is my ifconf?");
188 if (!ifc || umove(tcp, addr, ifc) < 0) {
196 * We failed to fetch the structure on exiting syscall,
197 * print whatever was fetched on entering syscall.
199 if (!entering_ifc->ifc_buf)
200 print_ifc_len(entering_ifc->ifc_len);
202 tprints(", ifc_buf=");
203 printaddr(ptr_to_kulong(entering_ifc->ifc_buf));
208 return RVAL_DECODED | 1;
212 tprints(", {ifc_len=");
214 print_ifc_len(ifc->ifc_len);
216 set_tcb_priv_data(tcp, ifc, free);
223 if (entering_ifc->ifc_buf && (entering_ifc->ifc_len != ifc->ifc_len))
225 if (!entering_ifc->ifc_buf || (entering_ifc->ifc_len != ifc->ifc_len))
226 print_ifc_len(ifc->ifc_len);
228 tprints(", ifc_buf=");
230 if (!entering_ifc->ifc_buf || syserror(tcp)) {
231 printaddr(ptr_to_kulong(entering_ifc->ifc_buf));
232 if (entering_ifc->ifc_buf != ifc->ifc_buf) {
234 printaddr(ptr_to_kulong(ifc->ifc_buf));
239 print_array(tcp, ptr_to_kulong(ifc->ifc_buf),
240 ifc->ifc_len / sizeof(struct_ifreq),
242 umoven_or_printaddr, print_ifconf_ifreq, NULL);
247 return RVAL_DECODED | 1;
250 MPERS_PRINTER_DECL(int, sock_ioctl,
251 struct tcb *tcp, const unsigned int code,
252 const kernel_ulong_t arg)
258 return decode_ifconf(tcp, arg);
275 printnum_int(tcp, arg, "%d");
290 printnum_int(tcp, arg, "%d");
315 if (umove_or_printaddr(tcp, arg, &ifr))
318 tprints("{ifr_name=");
319 print_ifname(ifr.ifr_name);
321 if (code == SIOCSIFNAME) {
322 tprints("ifr_newname=");
323 print_ifname(ifr.ifr_newname);
325 print_ifreq(tcp, code, arg, &ifr);
345 if (umove_or_printaddr(tcp, arg, &ifr))
348 if (SIOCGIFNAME == code) {
349 tprintf("{ifr_index=%d", ifr.ifr_ifindex);
351 tprints("{ifr_name=");
352 print_ifname(ifr.ifr_name);
362 if (umove(tcp, arg, &ifr) < 0) {
367 if (SIOCGIFNAME == code) {
368 tprints("ifr_name=");
369 print_ifname(ifr.ifr_name);
371 print_ifreq(tcp, code, arg, &ifr);
381 return RVAL_DECODED | 1;