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-rw-r--r--c/src/exec/librpc/src/rpc/bindresvport.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/c/src/exec/librpc/src/rpc/bindresvport.c b/c/src/exec/librpc/src/rpc/bindresvport.c
index e69de29bb2..bb97570b88 100644
--- a/c/src/exec/librpc/src/rpc/bindresvport.c
+++ b/c/src/exec/librpc/src/rpc/bindresvport.c
@@ -0,0 +1,147 @@
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part. Users
+ * may copy or modify Sun RPC without charge, but are not authorized
+ * to license or distribute it to anyone else except as part of a product or
+ * program developed by the user.
+ *
+ * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
+ * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
+ *
+ * Sun RPC is provided with no support and without any obligation on the
+ * part of Sun Microsystems, Inc. to assist in its use, correction,
+ * modification or enhancement.
+ *
+ * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
+ * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
+ * OR ANY PART THEREOF.
+ *
+ * In no event will Sun Microsystems, Inc. be liable for any lost revenue
+ * or profits or other special, indirect and consequential damages, even if
+ * Sun has been advised of the possibility of such damages.
+ *
+ * Sun Microsystems, Inc.
+ * 2550 Garcia Avenue
+ * Mountain View, California 94043
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)bindresvport.c 1.8 88/02/08 SMI";*/
+/*static char *sccsid = "from: @(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC";*/
+/*from: OpenBSD: bindresvport.c,v 1.7 1996/07/30 16:25:47 downsj Exp */
+static char *rcsid = "$FreeBSD: src/lib/libc/rpc/bindresvport.c,v 1.12 2000/01/26 09:02:42 shin Exp $";
+#endif
+
+/*
+ * Copyright (c) 1987 by Sun Microsystems, Inc.
+ *
+ * Portions Copyright(C) 1996, Jason Downs. All rights reserved.
+ */
+
+#include <sys/types.h>
+#include <sys/errno.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <unistd.h>
+#include <string.h>
+
+/*
+ * Bind a socket to a privileged port for whatever protocol.
+ */
+int
+bindresvport_sa(sd, sa)
+ int sd;
+ struct sockaddr *sa;
+{
+ int old, error, af;
+ struct sockaddr myaddr;
+ struct sockaddr_in *sin;
+#if (defined(AF_INET6) && defined(IPPROTO_IPV6))
+ struct sockaddr_in6 *sin6;
+#endif
+ int proto, portrange, portlow;
+ u_int16_t port;
+ int salen;
+
+ if (sa == NULL) {
+ salen = sizeof(myaddr);
+ sa = (struct sockaddr *)&myaddr;
+
+ if (getsockname(sd, sa, &salen) == -1)
+ return -1; /* errno is correctly set */
+
+ af = sa->sa_family;
+ memset(&myaddr, 0, salen);
+ } else
+ af = sa->sa_family;
+
+ if (af == AF_INET) {
+ proto = IPPROTO_IP;
+ portrange = IP_PORTRANGE;
+ portlow = IP_PORTRANGE_LOW;
+ sin = (struct sockaddr_in *)sa;
+ salen = sizeof(struct sockaddr_in);
+ port = sin->sin_port;
+#if (defined(AF_INET6) && defined(IPPROTO_IPV6))
+ } else if (af == AF_INET6) {
+ proto = IPPROTO_IPV6;
+ portrange = IPV6_PORTRANGE;
+ portlow = IPV6_PORTRANGE_LOW;
+ sin6 = (struct sockaddr_in6 *)sa;
+ salen = sizeof(struct sockaddr_in6);
+ port = sin6->sin6_port;
+#endif
+ } else {
+ errno = EPFNOSUPPORT;
+ return (-1);
+ }
+ sa->sa_family = af;
+ sa->sa_len = salen;
+
+ if (port == 0) {
+ int oldlen = sizeof(old);
+
+ error = getsockopt(sd, proto, portrange, &old, &oldlen);
+ if (error < 0)
+ return (error);
+
+ error = setsockopt(sd, proto, portrange, &portlow,
+ sizeof(portlow));
+ if (error < 0)
+ return (error);
+ }
+
+ error = bind(sd, sa, salen);
+
+ if (port == 0) {
+ int saved_errno = errno;
+
+ if (error) {
+ if (setsockopt(sd, proto, portrange, &old,
+ sizeof(old)) < 0)
+ errno = saved_errno;
+ return (error);
+ }
+
+ if (sa != (struct sockaddr *)&myaddr) {
+ /* Hmm, what did the kernel assign... */
+ if (getsockname(sd, sa, &salen) < 0)
+ errno = saved_errno;
+ return (error);
+ }
+ }
+ return (error);
+}
+
+/*
+ * Bind a socket to a privileged IP port
+ */
+int
+bindresvport(sd, sin)
+ int sd;
+ struct sockaddr_in *sin;
+{
+ return bindresvport_sa(sd, (struct sockaddr *)sin);
+}