1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 /****************************************************************************** 20 * writen.c 21 ******************************************************************************/ 22 23 #include <unistd.h> 24 25 /* Write "n" bytes to a descriptor 26 Use instead of write() when fd is a stream socket. */ 27 28 int writen(int fd, char *ptr, int nbytes) 29 { 30 int nleft, nwritten; 31 32 nleft = nbytes; 33 while (nleft > 0) { 34 nwritten = write(fd, ptr, nleft); 35 if (nwritten <= 0) 36 return (nwritten); /* error */ 37 nleft -= nwritten; 38 ptr += nwritten; 39 } 40 return (nbytes - nleft); 41 } 42
