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      1 /*	$NetBSD: t_compat.c,v 1.5 2021/11/26 15:45:52 gson 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 	atf_tc_expect_fail("PR kern/51610: rump does not include COMPAT_43");
     69 
     70 	/* query kernel for iface bcast */
     71         RL(fd = rump_sys_socket(AF_INET, SOCK_DGRAM, 0));
     72         RL(rump_sys_ioctl(fd, OOSIOCGIFBRDADDR, &ifreq));
     73 
     74 	/* make sure we got what we deserve */
     75         sin = (struct sockaddr_in *)&ifreq.ifr_broadaddr;
     76 	ATF_REQUIRE_EQ(sin->sin_addr.s_addr, htonl(0x0107ffff));
     77         rump_sys_close(fd);
     78 }
     79 
     80 ATF_TP_ADD_TCS(tp)
     81 {
     82 
     83 	ATF_TP_ADD_TC(tp, OOSIOCGIFBRDADDR);
     84 	return atf_no_error();
     85 }
     86