contrib/netbsd-tests/net/if/t_compat.c

   1 /*      $NetBSD: t_compat.c,v 1.1 2010/11/07 19:53:42 pooka Exp $       */
   2
   3 #include <sys/socket.h>
   4 #include <sys/ioctl.h>
   5 #include <net/if.h>
   6 #include <netinet/in.h>
   7
   8 #include <string.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11
  12 #include <rump/rump.h>
  13 #include <rump/rump_syscalls.h>
  14
  15 #include "../config/netconfig.c"
  16
  17 /*
  18  * Test for stack smashing in compat ioctl handling.  Adapted as an
  19  * atf test from code provided by Onno van der Linden in PR kern/44054
  20  */
  21
  22 struct oifreq {
  23         char    ifr_name[IFNAMSIZ];             /* if name, e.g. "en0" */
  24         union {
  25                 struct  sockaddr ifru_addr;
  26                 struct  sockaddr ifru_dstaddr;
  27                 struct  sockaddr ifru_broadaddr;
  28                 short   ifru_flags;
  29                 int     ifru_metric;
  30                 int     ifru_mtu;
  31                 int     ifru_dlt;
  32                 u_int   ifru_value;
  33                 void *  ifru_data;
  34                 struct {
  35                         uint32_t        b_buflen;
  36                         void            *b_buf;
  37                 } ifru_b;
  38         } ifr_ifru;
  39 };
  40 #define OOSIOCGIFBRDADDR _IOWR('i', 18, struct oifreq)
  41
  42 ATF_TC(OOSIOCGIFBRDADDR);
  43 ATF_TC_HEAD(OOSIOCGIFBRDADDR, tc)
  44 {
  45
  46         atf_tc_set_md_var(tc, "descr", "Checks that OOSIOCGIFBRDADDR works "
  47             "(PR kern/44054)");
  48 }
  49
  50 ATF_TC_BODY(OOSIOCGIFBRDADDR, tc)
  51 {
  52         int fd, ifnum;
  53         struct oifreq ifreq;
  54         struct sockaddr_in *sin;
  55         int rv;
  56
  57         memset(&ifreq,'\0',sizeof ifreq);
  58
  59         rump_init();
  60
  61         /* create an interface and give it netmask 0xffff0000 */
  62         rv = rump_pub_shmif_create("bus", &ifnum);
  63         if (rv)
  64                 atf_tc_fail("failed to create shmif: %s", strerror(rv));
  65         sprintf(ifreq.ifr_name, "shmif%d", ifnum);
  66         netcfg_rump_if(ifreq.ifr_name, "1.7.64.10", "255.255.0.0");
  67
  68         /* query kernel for iface bcast */
  69         RL(fd = rump_sys_socket(AF_INET, SOCK_DGRAM, 0));
  70         RL(rump_sys_ioctl(fd, OOSIOCGIFBRDADDR, &ifreq));
  71
  72         /* make sure we got what we deserve */
  73         sin = (struct sockaddr_in *)&ifreq.ifr_broadaddr;
  74         ATF_REQUIRE_EQ(sin->sin_addr.s_addr, htonl(0x0107ffff));
  75         rump_sys_close(fd);
  76 }
  77
  78 ATF_TP_ADD_TCS(tp)
  79 {
  80
  81         ATF_TP_ADD_TC(tp, OOSIOCGIFBRDADDR);
  82         return atf_no_error();
  83 }