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1.1 root 1: /*
2: * Copyright (c) 1983 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms are permitted
6: * provided that: (1) source distributions retain this entire copyright
7: * notice and comment, and (2) distributions including binaries display
8: * the following acknowledgement: ``This product includes software
9: * developed by the University of California, Berkeley and its contributors''
10: * in the documentation or other materials provided with the distribution
11: * and in all advertising materials mentioning features or use of this
12: * software. Neither the name of the University nor the names of its
13: * contributors may be used to endorse or promote products derived
14: * from this software without specific prior written permission.
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18: */
19:
20: #if defined(LIBC_SCCS) && !defined(lint)
21: static char sccsid[] = "@(#)getproto.c 5.6 (Berkeley) 6/1/90";
22: #endif /* LIBC_SCCS and not lint */
23:
24: #include <netdb.h>
25:
26: extern int _proto_stayopen;
27:
28: struct protoent *
29: getprotobynumber(proto)
30: register int proto;
31: {
32: register struct protoent *p;
33:
34: setprotoent(_proto_stayopen);
35: while (p = getprotoent())
36: if (p->p_proto == proto)
37: break;
38: if (!_proto_stayopen)
39: endprotoent();
40: return (p);
41: }
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