/* $NetBSD: t_compat.c,v 1.5 2021/11/26 15:45:52 gson Exp $ */ #include #include #include #include #include #include #include #include #include #include "../config/netconfig.c" /* * Test for stack smashing in compat ioctl handling. Adapted as an * atf test from code provided by Onno van der Linden in PR kern/44054 */ struct oifreq { char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ union { struct sockaddr ifru_addr; struct sockaddr ifru_dstaddr; struct sockaddr ifru_broadaddr; short ifru_flags; int ifru_metric; int ifru_mtu; int ifru_dlt; u_int ifru_value; void * ifru_data; struct { uint32_t b_buflen; void *b_buf; } ifru_b; } ifr_ifru; }; #define OOSIOCGIFBRDADDR _IOWR('i', 18, struct oifreq) ATF_TC(OOSIOCGIFBRDADDR); ATF_TC_HEAD(OOSIOCGIFBRDADDR, tc) { atf_tc_set_md_var(tc, "descr", "Checks that OOSIOCGIFBRDADDR works " "(PR kern/44054)"); } ATF_TC_BODY(OOSIOCGIFBRDADDR, tc) { int fd, ifnum; struct oifreq ifreq; struct sockaddr_in *sin; int rv; memset(&ifreq,'\0',sizeof ifreq); rump_init(); /* create an interface and give it netmask 0xffff0000 */ rv = rump_pub_shmif_create("bus", &ifnum); if (rv) atf_tc_fail("failed to create shmif: %s", strerror(rv)); sprintf(ifreq.ifr_name, "shmif%d", ifnum); netcfg_rump_if(ifreq.ifr_name, "1.7.64.10", "255.255.0.0"); atf_tc_expect_fail("PR kern/51610: rump does not include COMPAT_43"); /* query kernel for iface bcast */ RL(fd = rump_sys_socket(AF_INET, SOCK_DGRAM, 0)); RL(rump_sys_ioctl(fd, OOSIOCGIFBRDADDR, &ifreq)); /* make sure we got what we deserve */ sin = (struct sockaddr_in *)&ifreq.ifr_broadaddr; ATF_REQUIRE_EQ(sin->sin_addr.s_addr, htonl(0x0107ffff)); rump_sys_close(fd); } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, OOSIOCGIFBRDADDR); return atf_no_error(); }