diff options
Diffstat (limited to 'libbb/create_icmp6_socket.c')
-rw-r--r-- | libbb/create_icmp6_socket.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libbb/create_icmp6_socket.c b/libbb/create_icmp6_socket.c new file mode 100644 index 0000000..2065517 --- /dev/null +++ b/libbb/create_icmp6_socket.c @@ -0,0 +1,36 @@ +/* vi: set sw=4 ts=4: */ +/* + * Utility routines. + * + * create raw socket for icmp (IPv6 version) protocol + * and drop root privileges if running setuid + */ + +#include "libbb.h" + +#if ENABLE_FEATURE_IPV6 +int FAST_FUNC create_icmp6_socket(void) +{ + int sock; +#if 0 + struct protoent *proto; + proto = getprotobyname("ipv6-icmp"); + /* if getprotobyname failed, just silently force + * proto->p_proto to have the correct value for "ipv6-icmp" */ + sock = socket(AF_INET6, SOCK_RAW, + (proto ? proto->p_proto : IPPROTO_ICMPV6)); +#else + sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); +#endif + if (sock < 0) { + if (errno == EPERM) + bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); + bb_perror_msg_and_die(bb_msg_can_not_create_raw_socket); + } + + /* drop root privs if running setuid */ + xsetuid(getuid()); + + return sock; +} +#endif |