3 * Copyright (C) 2001 Simone Piccardi
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 /****************************************************************
22 * Routine to read an exact number of bytes from a socket
24 * Author: Simone Piccardi
27 * $Id: SockRead.c,v 1.3 2001/09/09 22:45:34 piccardi Exp $
29 ****************************************************************/
33 ssize_t SockRead(int fd, void *buf, size_t count)
39 while (nleft > 0) { /* repeat until no left */
40 if ( (nread = read(fd, buf, nleft)) < 0) {
41 if (errno == EINTR) { /* if interrupted by system call */
42 continue; /* repeat the loop */
44 return(nread); /* otherwise exit */
46 } else if (nread == 0) { /* EOF */
47 break; /* break loop here */
49 nleft -= nread; /* set left to read */
50 buf +=nread; /* set pointer */
52 return (count - nleft);