1 /*
2 * lib/krb5/os/net_write.c
3 *
4 * Copyright 1987, 1988, 1990 by the Massachusetts Institute of Technology.
5 * All Rights Reserved.
6 *
7 * Export of this software from the United States of America may
8 * require a specific license from the United States Government.
9 * It is the responsibility of any person or organization contemplating
10 * export to obtain such a license before exporting.
11 *
12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
13 * distribute this software and its documentation for any purpose and
14 * without fee is hereby granted, provided that the above copyright
15 * notice appear in all copies and that both that copyright notice and
16 * this permission notice appear in supporting documentation, and that
17 * the name of M.I.T. not be used in advertising or publicity pertaining
18 * to distribution of the software without specific, written prior
19 * permission. Furthermore if you modify this software you must label
20 * your software as modified software and not distribute it in such a
21 * fashion that it might be confused with the original M.I.T. software.
22 * M.I.T. makes no representations about the suitability of
23 * this software for any purpose. It is provided "as is" without express
24 * or implied warranty.
25 *
26 */
27
28 #include "k5-int.h"
29
30 /*
31 * krb5_net_write() writes "len" bytes from "buf" to the file
32 * descriptor "fd". It returns the number of bytes written or
33 * a write() error. (The calling interface is identical to
34 * write(2).)
35 *
36 * XXX must not use non-blocking I/O
37 */
38
39 /*ARGSUSED*/
40 int
krb5_net_write(krb5_context context,int fd,register const char * buf,int len)41 krb5_net_write(krb5_context context, int fd, register const char *buf, int len)
42 {
43 int cc;
44 register int wrlen = len;
45 do {
46 cc = SOCKET_WRITE((SOCKET)fd, buf, wrlen);
47 if (cc < 0) {
48 if (SOCKET_ERRNO == SOCKET_EINTR)
49 continue;
50
51 /* XXX this interface sucks! */
52 errno = SOCKET_ERRNO;
53
54 return(cc);
55 }
56 else {
57 buf += cc;
58 wrlen -= cc;
59 }
60 } while (wrlen > 0);
61 return(len);
62 }
63