diff options
Diffstat (limited to 'net/if/t_compat.c')
-rw-r--r-- | net/if/t_compat.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/net/if/t_compat.c b/net/if/t_compat.c new file mode 100644 index 000000000000..4798034fa2cc --- /dev/null +++ b/net/if/t_compat.c @@ -0,0 +1,83 @@ +/* $NetBSD: t_compat.c,v 1.1 2010/11/07 19:53:42 pooka Exp $ */ + +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <net/if.h> +#include <netinet/in.h> + +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#include <rump/rump.h> +#include <rump/rump_syscalls.h> + +#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"); + + /* 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(); +} |