382 lines
8.8 KiB
C
382 lines
8.8 KiB
C
/*
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* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#include <sys/socket.h>
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#if defined ALPHA || defined SH || defined SH64
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# include <linux/ioctl.h>
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#endif
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#include <linux/sockios.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include DEF_MPERS_TYPE(struct_ifconf)
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#include DEF_MPERS_TYPE(struct_ifreq)
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typedef struct ifconf struct_ifconf;
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typedef struct ifreq struct_ifreq;
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#include MPERS_DEFS
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#include "xlat/iffflags.h"
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#define PRINT_IFREQ_ADDR(tcp, ifr, sockaddr) \
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do { \
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tprints(#sockaddr "="); \
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print_sockaddr(tcp, &((ifr)->sockaddr), \
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sizeof((ifr)->sockaddr)); \
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} while (0)
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static void
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print_ifname(const char *ifname)
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{
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print_quoted_string(ifname, IFNAMSIZ + 1, QUOTE_0_TERMINATED);
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}
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static void
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print_ifreq(struct tcb *const tcp, const unsigned int code,
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const kernel_ulong_t arg, const struct_ifreq *const ifr)
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{
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switch (code) {
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case SIOCSIFADDR:
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case SIOCGIFADDR:
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PRINT_IFREQ_ADDR(tcp, ifr, ifr_addr);
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break;
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case SIOCSIFDSTADDR:
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case SIOCGIFDSTADDR:
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PRINT_IFREQ_ADDR(tcp, ifr, ifr_dstaddr);
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break;
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case SIOCSIFBRDADDR:
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case SIOCGIFBRDADDR:
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PRINT_IFREQ_ADDR(tcp, ifr, ifr_broadaddr);
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break;
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case SIOCSIFNETMASK:
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case SIOCGIFNETMASK:
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PRINT_IFREQ_ADDR(tcp, ifr, ifr_netmask);
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break;
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case SIOCSIFHWADDR:
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case SIOCGIFHWADDR: {
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/* XXX Are there other hardware addresses
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than 6-byte MACs? */
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const unsigned char *bytes =
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(unsigned char *) &ifr->ifr_hwaddr.sa_data;
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tprintf("ifr_hwaddr=%02x:%02x:%02x:%02x:%02x:%02x",
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bytes[0], bytes[1], bytes[2],
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bytes[3], bytes[4], bytes[5]);
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break;
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}
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case SIOCSIFFLAGS:
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case SIOCGIFFLAGS:
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tprints("ifr_flags=");
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printflags(iffflags, (unsigned short) ifr->ifr_flags, "IFF_???");
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break;
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case SIOCSIFMETRIC:
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case SIOCGIFMETRIC:
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tprintf("ifr_metric=%d", ifr->ifr_metric);
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break;
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case SIOCSIFMTU:
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case SIOCGIFMTU:
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tprintf("ifr_mtu=%d", ifr->ifr_mtu);
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break;
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case SIOCSIFSLAVE:
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case SIOCGIFSLAVE:
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tprints("ifr_slave=");
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print_ifname(ifr->ifr_slave);
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break;
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case SIOCSIFTXQLEN:
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case SIOCGIFTXQLEN:
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tprintf("ifr_qlen=%d", ifr->ifr_qlen);
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break;
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case SIOCSIFMAP:
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case SIOCGIFMAP:
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tprintf("ifr_map={mem_start=%#" PRI_klx ", "
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"mem_end=%#" PRI_klx ", base_addr=%#x, "
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"irq=%u, dma=%u, port=%u}",
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(kernel_ulong_t) ifr->ifr_map.mem_start,
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(kernel_ulong_t) ifr->ifr_map.mem_end,
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(unsigned) ifr->ifr_map.base_addr,
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(unsigned) ifr->ifr_map.irq,
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(unsigned) ifr->ifr_map.dma,
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(unsigned) ifr->ifr_map.port);
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break;
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}
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}
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static unsigned int
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print_ifc_len(int len)
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{
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const unsigned int n = (unsigned int) len / sizeof(struct_ifreq);
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if (len < 0 || n * sizeof(struct_ifreq) != (unsigned int) len)
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tprintf("%d", len);
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else
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tprintf("%u * sizeof(struct ifreq)", n);
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return n;
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}
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static bool
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print_ifconf_ifreq(struct tcb *tcp, void *elem_buf, size_t elem_size,
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void *dummy)
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{
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struct_ifreq *ifr = elem_buf;
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tprints("{ifr_name=");
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print_ifname(ifr->ifr_name);
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tprints(", ");
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PRINT_IFREQ_ADDR(tcp, ifr, ifr_addr);
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tprints("}");
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return true;
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}
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/*
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* There are two different modes of operation:
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*
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* - Get buffer size. In this case, the callee sets ifc_buf to NULL,
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* and the kernel returns the buffer size in ifc_len.
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* - Get actual data. In this case, the callee specifies the buffer address
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* in ifc_buf and its size in ifc_len. The kernel fills the buffer with
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* the data, and its amount is returned in ifc_len.
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*
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* Note that, technically, the whole struct ifconf is overwritten,
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* so ifc_buf could be different on exit, but current ioctl handler
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* implementation does not touch it.
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*/
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static int
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decode_ifconf(struct tcb *const tcp, const kernel_ulong_t addr)
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{
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struct_ifconf *entering_ifc = NULL;
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struct_ifconf *ifc =
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entering(tcp) ? malloc(sizeof(*ifc)) : alloca(sizeof(*ifc));
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if (exiting(tcp)) {
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entering_ifc = get_tcb_priv_data(tcp);
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if (!entering_ifc) {
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error_msg("decode_ifconf: where is my ifconf?");
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return 0;
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}
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}
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if (!ifc || umove(tcp, addr, ifc) < 0) {
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if (entering(tcp)) {
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free(ifc);
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tprints(", ");
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printaddr(addr);
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} else {
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/*
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* We failed to fetch the structure on exiting syscall,
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* print whatever was fetched on entering syscall.
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*/
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if (!entering_ifc->ifc_buf)
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print_ifc_len(entering_ifc->ifc_len);
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tprints(", ifc_buf=");
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printaddr(ptr_to_kulong(entering_ifc->ifc_buf));
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tprints("}");
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}
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return RVAL_DECODED | 1;
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}
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if (entering(tcp)) {
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tprints(", {ifc_len=");
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if (ifc->ifc_buf)
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print_ifc_len(ifc->ifc_len);
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set_tcb_priv_data(tcp, ifc, free);
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return 1;
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}
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/* exiting */
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if (entering_ifc->ifc_buf && (entering_ifc->ifc_len != ifc->ifc_len))
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tprints(" => ");
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if (!entering_ifc->ifc_buf || (entering_ifc->ifc_len != ifc->ifc_len))
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print_ifc_len(ifc->ifc_len);
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tprints(", ifc_buf=");
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if (!entering_ifc->ifc_buf || syserror(tcp)) {
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printaddr(ptr_to_kulong(entering_ifc->ifc_buf));
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if (entering_ifc->ifc_buf != ifc->ifc_buf) {
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tprints(" => ");
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printaddr(ptr_to_kulong(ifc->ifc_buf));
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}
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} else {
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struct_ifreq ifr;
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print_array(tcp, ptr_to_kulong(ifc->ifc_buf),
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ifc->ifc_len / sizeof(struct_ifreq),
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&ifr, sizeof(ifr),
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umoven_or_printaddr, print_ifconf_ifreq, NULL);
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}
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tprints("}");
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return RVAL_DECODED | 1;
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}
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MPERS_PRINTER_DECL(int, sock_ioctl,
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struct tcb *tcp, const unsigned int code,
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const kernel_ulong_t arg)
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{
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struct_ifreq ifr;
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switch (code) {
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case SIOCGIFCONF:
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return decode_ifconf(tcp, arg);
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#ifdef SIOCBRADDBR
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case SIOCBRADDBR:
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case SIOCBRDELBR:
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tprints(", ");
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printstr(tcp, arg);
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break;
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#endif
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#ifdef FIOSETOWN
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case FIOSETOWN:
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#endif
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#ifdef SIOCSPGRP
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case SIOCSPGRP:
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#endif
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tprints(", ");
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printnum_int(tcp, arg, "%d");
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break;
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#ifdef FIOGETOWN
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case FIOGETOWN:
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#endif
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#ifdef SIOCGPGRP
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case SIOCGPGRP:
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#endif
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#ifdef SIOCATMARK
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case SIOCATMARK:
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#endif
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if (entering(tcp))
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return 0;
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tprints(", ");
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printnum_int(tcp, arg, "%d");
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break;
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#ifdef SIOCBRADDIF
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case SIOCBRADDIF:
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#endif
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#ifdef SIOCBRDELIF
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case SIOCBRDELIF:
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#endif
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/* no arguments */
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break;
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case SIOCSIFNAME:
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case SIOCSIFADDR:
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case SIOCSIFDSTADDR:
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case SIOCSIFBRDADDR:
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case SIOCSIFNETMASK:
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case SIOCSIFFLAGS:
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case SIOCSIFMETRIC:
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case SIOCSIFMTU:
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case SIOCSIFSLAVE:
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case SIOCSIFHWADDR:
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case SIOCSIFTXQLEN:
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case SIOCSIFMAP:
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &ifr))
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break;
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tprints("{ifr_name=");
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print_ifname(ifr.ifr_name);
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tprints(", ");
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if (code == SIOCSIFNAME) {
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tprints("ifr_newname=");
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print_ifname(ifr.ifr_newname);
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} else {
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print_ifreq(tcp, code, arg, &ifr);
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}
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tprints("}");
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break;
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case SIOCGIFNAME:
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case SIOCGIFINDEX:
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case SIOCGIFADDR:
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case SIOCGIFDSTADDR:
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case SIOCGIFBRDADDR:
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case SIOCGIFNETMASK:
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case SIOCGIFFLAGS:
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case SIOCGIFMETRIC:
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case SIOCGIFMTU:
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case SIOCGIFSLAVE:
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case SIOCGIFHWADDR:
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case SIOCGIFTXQLEN:
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case SIOCGIFMAP:
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if (entering(tcp)) {
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tprints(", ");
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if (umove_or_printaddr(tcp, arg, &ifr))
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break;
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if (SIOCGIFNAME == code) {
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tprintf("{ifr_index=%d", ifr.ifr_ifindex);
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} else {
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tprints("{ifr_name=");
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print_ifname(ifr.ifr_name);
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}
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return 1;
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} else {
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if (syserror(tcp)) {
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tprints("}");
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break;
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}
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tprints(", ");
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if (umove(tcp, arg, &ifr) < 0) {
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tprints("???}");
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break;
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}
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if (SIOCGIFNAME == code) {
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tprints("ifr_name=");
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print_ifname(ifr.ifr_name);
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} else {
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print_ifreq(tcp, code, arg, &ifr);
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}
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tprints("}");
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break;
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}
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default:
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return RVAL_DECODED;
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}
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return RVAL_DECODED | 1;
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}
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