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 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