diff options
Diffstat (limited to 'erts/emulator/drivers/common/inet_drv.c')
| -rw-r--r-- | erts/emulator/drivers/common/inet_drv.c | 97 |
1 files changed, 96 insertions, 1 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c index 0fe5183b42..90114b77f5 100644 --- a/erts/emulator/drivers/common/inet_drv.c +++ b/erts/emulator/drivers/common/inet_drv.c @@ -591,7 +591,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n) (((unsigned char*) (s))[1] << 8) | \ (((unsigned char*) (s))[0])) -#ifdef HAVE_SYS_UN_H +#if defined(HAVE_SYS_UN_H) || defined(SO_BINDTODEVICE) /* strnlen doesn't exist everywhere */ static size_t my_strnlen(const char *s, size_t maxlen) @@ -602,6 +602,10 @@ static size_t my_strnlen(const char *s, size_t maxlen) return i; } +#endif + +#if defined(HAVE_SYS_UN_H) + /* Check that some character in the buffer != '\0' */ static int is_nonzero(const char *s, size_t n) { @@ -778,6 +782,7 @@ static int is_nonzero(const char *s, size_t n) #define INET_LOPT_TCP_SHOW_ECONNRESET 39 /* tell user about incoming RST */ #define INET_LOPT_LINE_DELIM 40 /* Line delimiting char */ #define INET_OPT_TCLASS 41 /* IPv6 transport class */ +#define INET_OPT_BIND_TO_DEVICE 42 /* get/set network device the socket is bound to */ /* SCTP options: a separate range, from 100: */ #define SCTP_OPT_RTOINFO 100 #define SCTP_OPT_ASSOCINFO 101 @@ -1334,6 +1339,7 @@ static ErlDrvTermData am_tos; static ErlDrvTermData am_tclass; static ErlDrvTermData am_ipv6_v6only; static ErlDrvTermData am_netns; +static ErlDrvTermData am_bind_to_device; #endif static char str_eafnosupport[] = "eafnosupport"; @@ -3725,6 +3731,7 @@ static void inet_init_sctp(void) { INIT_ATOM(tclass); INIT_ATOM(ipv6_v6only); INIT_ATOM(netns); + INIT_ATOM(bind_to_device); /* Option names */ INIT_ATOM(sctp_rtoinfo); @@ -5946,6 +5953,9 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len) int ival; char* arg_ptr; int arg_sz; +#ifdef SO_BINDTODEVICE + char ifname[IFNAMSIZ]; +#endif enum PacketParseType old_htype = desc->htype; int old_active = desc->active; int propagate; /* Set to 1 if failure to set this option @@ -6331,6 +6341,29 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len) len -= arg_sz; break; +#ifdef SO_BINDTODEVICE + case INET_OPT_BIND_TO_DEVICE: + if (ival < 0) return -1; + if (len < ival) return -1; + if (ival > sizeof(ifname)) { + return -1; + } + memcpy(ifname, ptr, ival); + ifname[ival] = '\0'; + ptr += ival; + len -= ival; + + proto = SOL_SOCKET; + type = SO_BINDTODEVICE; + arg_ptr = (char*)&ifname; + arg_sz = sizeof(ifname); + propagate = 1; /* We do want to know if this fails */ + + DEBUGF(("inet_set_opts(%ld): s=%d, SO_BINDTODEVICE=%s\r\n", + (long)desc->port, desc->s, ifname)); + break; +#endif + default: return -1; } @@ -6463,6 +6496,9 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len) # ifdef SCTP_DELAYED_ACK_TIME struct sctp_assoc_value av; /* Not in SOLARIS10 */ # endif +# ifdef SO_BINDTODEVICE + char ifname[IFNAMSIZ]; +# endif } arg; @@ -6702,6 +6738,23 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len) continue; /* Option not supported -- ignore it */ # endif +#ifdef SO_BINDTODEVICE + case INET_OPT_BIND_TO_DEVICE: + arg_sz = get_int32(curr); curr += 4; + CHKLEN(curr, arg_sz); + if (arg_sz >= sizeof(arg.ifname)) + return -1; + memcpy(arg.ifname, curr, arg_sz); + arg.ifname[arg_sz] = '\0'; + curr += arg_sz; + + proto = SOL_SOCKET; + type = SO_BINDTODEVICE; + arg_ptr = (char*) (&arg.ifname); + arg_sz = sizeof ( arg.ifname); + break; +#endif + case SCTP_OPT_AUTOCLOSE: { arg.ival= get_int32 (curr); curr += 4; @@ -6967,6 +7020,9 @@ static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc, ErlDrvSizeT dest_used = 0; ErlDrvSizeT dest_allocated = destlen; char *orig_dest = *dest; +#ifdef SO_BINDTODEVICE + char ifname[IFNAMSIZ]; +#endif /* Ptr is a name parameter */ #define RETURN_ERROR() \ @@ -7302,6 +7358,26 @@ static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc, put_int32(arg_sz,ptr); continue; } + +#ifdef SO_BINDTODEVICE + case INET_OPT_BIND_TO_DEVICE: + arg_sz = sizeof(ifname); + TRUNCATE_TO(0,ptr); + PLACE_FOR(5 + arg_sz,ptr); + arg_ptr = ptr + 5; + if (IS_SOCKET_ERROR(sock_getopt(desc->s,SOL_SOCKET,SO_BINDTODEVICE, + arg_ptr,&arg_sz))) { + TRUNCATE_TO(0,ptr); + continue; + } + arg_sz = my_strnlen(arg_ptr, arg_sz); + TRUNCATE_TO(arg_sz + 5,ptr); + *ptr++ = opt; + put_int32(arg_sz,ptr); + ptr += arg_sz; + continue; +#endif + default: RETURN_ERROR(); } @@ -7583,6 +7659,25 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc, i = LOAD_TUPLE (spec, i, 2); break; } + +#ifdef SO_BINDTODEVICE + /* The following option returns a binary: */ + case INET_OPT_BIND_TO_DEVICE: { + char ifname[IFNAMSIZ]; + unsigned int sz = sizeof(ifname); + + if (sock_getopt(desc->s, SOL_SOCKET, SO_BINDTODEVICE, + &ifname, &sz) < 0) continue; + /* Fill in the response: */ + PLACE_FOR(spec, i, + LOAD_ATOM_CNT + LOAD_BUF2BINARY_CNT + LOAD_TUPLE_CNT); + i = LOAD_ATOM (spec, i, am_bind_to_device); + i = LOAD_BUF2BINARY(spec, i, ifname, my_strnlen(ifname, sz)); + i = LOAD_TUPLE (spec, i, 2); + break; + } +#endif + /* The following options just return an integer value: */ case INET_OPT_RCVBUF : case INET_OPT_SNDBUF : |