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8ea4199d DF |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
6b2f9dd0 KB |
3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
f4f66d2c KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
8ea4199d DF |
16 | */ |
17 | ||
2ce81398 | 18 | #if defined(LIBC_SCCS) && !defined(lint) |
f4f66d2c | 19 | static char sccsid[] = "@(#)getproto.c 5.5 (Berkeley) %G%"; |
6b2f9dd0 | 20 | #endif /* LIBC_SCCS and not lint */ |
82fe24d3 SL |
21 | |
22 | #include <netdb.h> | |
23 | ||
5442f2c7 JL |
24 | extern int _proto_stayopen; |
25 | ||
82fe24d3 | 26 | struct protoent * |
5e649950 | 27 | getprotobynumber(proto) |
82fe24d3 SL |
28 | register int proto; |
29 | { | |
30 | register struct protoent *p; | |
31 | ||
5442f2c7 | 32 | setprotoent(_proto_stayopen); |
82fe24d3 SL |
33 | while (p = getprotoent()) |
34 | if (p->p_proto == proto) | |
35 | break; | |
5442f2c7 JL |
36 | if (!_proto_stayopen) |
37 | endprotoent(); | |
82fe24d3 SL |
38 | return (p); |
39 | } |