/* Open a NETLINK socket. */ int __netlink_open (struct netlink_handle *h) { struct sockaddr_nl nladdr; h->fd = __socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE); if (h->fd < 0) goto out; memset (&nladdr, '\0', sizeof (nladdr)); nladdr.nl_family = AF_NETLINK; if (__bind (h->fd, (struct sockaddr *) &nladdr, sizeof (nladdr)) < 0) { close_and_out: __netlink_close (h); out: #if __ASSUME_NETLINK_SUPPORT == 0 __no_netlink_support = 1; #endif return -1; } /* Determine the ID the kernel assigned for this netlink connection. It is not necessarily the PID if there is more than one socket open. */ socklen_t addr_len = sizeof (nladdr); if (__getsockname (h->fd, (struct sockaddr *) &nladdr, &addr_len) < 0) goto close_and_out; h->pid = nladdr.nl_pid; return 0; }
/* * Usage: * xprt = svcunix_create(sock, send_buf_size, recv_buf_size); * * Creates, registers, and returns a (rpc) unix based transporter. * Once *xprt is initialized, it is registered as a transporter * see (svc.h, xprt_register). This routine returns * a NULL if a problem occurred. * * If sock<0 then a socket is created, else sock is used. * If the socket, sock is not bound to a port then svcunix_create * binds it to an arbitrary port. The routine then starts a unix * listener on the socket's associated port. In any (successful) case, * xprt->xp_sock is the registered socket number and xprt->xp_port is the * associated port number. * * Since unix streams do buffered io similar to stdio, the caller can specify * how big the send and receive buffers are via the second and third parms; * 0 => use the system default. */ SVCXPRT * svcunix_create (int sock, u_int sendsize, u_int recvsize, char *path) { bool_t madesock = FALSE; SVCXPRT *xprt; struct unix_rendezvous *r; struct sockaddr_un addr; socklen_t len = sizeof (struct sockaddr_in); if (sock == RPC_ANYSOCK) { if ((sock = __socket (AF_UNIX, SOCK_STREAM, 0)) < 0) { perror (_("svc_unix.c - AF_UNIX socket creation problem")); return (SVCXPRT *) NULL; } madesock = TRUE; } memset (&addr, '\0', sizeof (addr)); addr.sun_family = AF_UNIX; len = strlen (path) + 1; memcpy (addr.sun_path, path, len); len += sizeof (addr.sun_family); __bind (sock, (struct sockaddr *) &addr, len); if (__getsockname (sock, (struct sockaddr *) &addr, &len) != 0 || __listen (sock, SOMAXCONN) != 0) { perror (_("svc_unix.c - cannot getsockname or listen")); if (madesock) __close (sock); return (SVCXPRT *) NULL; } r = (struct unix_rendezvous *) mem_alloc (sizeof (*r)); xprt = (SVCXPRT *) mem_alloc (sizeof (SVCXPRT)); if (r == NULL || xprt == NULL) { __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n")); mem_free (r, sizeof (*r)); mem_free (xprt, sizeof (SVCXPRT)); return NULL; } r->sendsize = sendsize; r->recvsize = recvsize; xprt->xp_p2 = NULL; xprt->xp_p1 = (caddr_t) r; xprt->xp_verf = _null_auth; xprt->xp_ops = &svcunix_rendezvous_op; xprt->xp_port = -1; xprt->xp_sock = sock; xprt_register (xprt); return xprt; }
/* * Usage: * xprt = svctcp_create(sock, send_buf_size, recv_buf_size); * * Creates, registers, and returns a (rpc) tcp based transporter. * Once *xprt is initialized, it is registered as a transporter * see (svc.h, xprt_register). This routine returns * a NULL if a problem occurred. * * If sock<0 then a socket is created, else sock is used. * If the socket, sock is not bound to a port then svctcp_create * binds it to an arbitrary port. The routine then starts a tcp * listener on the socket's associated port. In any (successful) case, * xprt->xp_sock is the registered socket number and xprt->xp_port is the * associated port number. * * Since tcp streams do buffered io similar to stdio, the caller can specify * how big the send and receive buffers are via the second and third parms; * 0 => use the system default. */ SVCXPRT * svctcp_create (int sock, u_int sendsize, u_int recvsize) { bool_t madesock = FALSE; SVCXPRT *xprt; struct tcp_rendezvous *r; struct sockaddr_in addr; socklen_t len = sizeof (struct sockaddr_in); if (sock == RPC_ANYSOCK) { if ((sock = __socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) { perror (_("svc_tcp.c - tcp socket creation problem")); return (SVCXPRT *) NULL; } madesock = TRUE; } __bzero ((char *) &addr, sizeof (addr)); addr.sin_family = AF_INET; if (bindresvport (sock, &addr)) { addr.sin_port = 0; (void) __bind (sock, (struct sockaddr *) &addr, len); } if ((__getsockname (sock, (struct sockaddr *) &addr, &len) != 0) || (__listen (sock, SOMAXCONN) != 0)) { perror (_("svc_tcp.c - cannot getsockname or listen")); if (madesock) (void) __close (sock); return (SVCXPRT *) NULL; } r = (struct tcp_rendezvous *) mem_alloc (sizeof (*r)); xprt = (SVCXPRT *) mem_alloc (sizeof (SVCXPRT)); if (r == NULL || xprt == NULL) { (void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n")); mem_free (r, sizeof (*r)); mem_free (xprt, sizeof (SVCXPRT)); return NULL; } r->sendsize = sendsize; r->recvsize = recvsize; xprt->xp_p2 = NULL; xprt->xp_p1 = (caddr_t) r; xprt->xp_verf = _null_auth; xprt->xp_ops = &svctcp_rendezvous_op; xprt->xp_port = ntohs (addr.sin_port); xprt->xp_sock = sock; xprt_register (xprt); return xprt; }
static int get_address_family (int fd) { struct sockaddr_storage sa; socklen_t sa_len = sizeof (sa); if (__getsockname (fd, (struct sockaddr *) &sa, &sa_len) < 0) return -1; /* Check that the socket family number is preserved despite in-band signaling. */ _Static_assert (sizeof (sa.ss_family) < sizeof (int), "address family size"); _Static_assert (0 < (__typeof__ (sa.ss_family)) -1, "address family unsigned"); return sa.ss_family; }