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*/
40int
41krb5_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