1 #pragma ident "%Z%%M% %I% %E% SMI" 2 /* 3 * lib/krb5/os/net_write.c 4 * 5 * Copyright 1987, 1988, 1990 by the Massachusetts Institute of Technology. 6 * All Rights Reserved. 7 * 8 * Export of this software from the United States of America may 9 * require a specific license from the United States Government. 10 * It is the responsibility of any person or organization contemplating 11 * export to obtain such a license before exporting. 12 * 13 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 14 * distribute this software and its documentation for any purpose and 15 * without fee is hereby granted, provided that the above copyright 16 * notice appear in all copies and that both that copyright notice and 17 * this permission notice appear in supporting documentation, and that 18 * the name of M.I.T. not be used in advertising or publicity pertaining 19 * to distribution of the software without specific, written prior 20 * permission. Furthermore if you modify this software you must label 21 * your software as modified software and not distribute it in such a 22 * fashion that it might be confused with the original M.I.T. software. 23 * M.I.T. makes no representations about the suitability of 24 * this software for any purpose. It is provided "as is" without express 25 * or implied warranty. 26 * 27 */ 28 29 #define NEED_LOWLEVEL_IO 30 #define NEED_SOCKETS 31 #include <k5-int.h> 32 33 /* 34 * krb5_net_write() writes "len" bytes from "buf" to the file 35 * descriptor "fd". It returns the number of bytes written or 36 * a write() error. (The calling interface is identical to 37 * write(2).) 38 * 39 * XXX must not use non-blocking I/O 40 */ 41 42 /*ARGSUSED*/ 43 int 44 krb5_net_write(krb5_context context, int fd, register const char *buf, int len) 45 { 46 int cc; 47 register int wrlen = len; 48 do { 49 cc = SOCKET_WRITE((SOCKET)fd, buf, wrlen); 50 if (cc < 0) { 51 if (SOCKET_ERRNO == SOCKET_EINTR) 52 continue; 53 54 /* XXX this interface sucks! */ 55 errno = SOCKET_ERRNO; 56 57 return(cc); 58 } 59 else { 60 buf += cc; 61 wrlen -= cc; 62 } 63 } while (wrlen > 0); 64 return(len); 65 } 66