1/* $Id$ */ 2 3/*** 4 This file is part of avahi. 5 6 avahi is free software; you can redistribute it and/or modify it 7 under the terms of the GNU Lesser General Public License as 8 published by the Free Software Foundation; either version 2.1 of the 9 License, or (at your option) any later version. 10 11 avahi is distributed in the hope that it will be useful, but WITHOUT 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 13 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General 14 Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with avahi; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 19 USA. 20***/ 21 22#ifdef HAVE_CONFIG_H 23#include <config.h> 24#endif 25 26#include <sys/select.h> 27#include <unistd.h> 28#include <fcntl.h> 29#include <assert.h> 30 31#include "fdutil.h" 32 33int avahi_set_cloexec(int fd) { 34 int n; 35 36 assert(fd >= 0); 37 38 if ((n = fcntl(fd, F_GETFD)) < 0) 39 return -1; 40 41 if (n & FD_CLOEXEC) 42 return 0; 43 44 return fcntl(fd, F_SETFD, n|FD_CLOEXEC); 45} 46 47int avahi_set_nonblock(int fd) { 48 int n; 49 50 assert(fd >= 0); 51 52 if ((n = fcntl(fd, F_GETFL)) < 0) 53 return -1; 54 55 if (n & O_NONBLOCK) 56 return 0; 57 58 return fcntl(fd, F_SETFL, n|O_NONBLOCK); 59} 60 61int avahi_wait_for_write(int fd) { 62 fd_set fds; 63 int r; 64 65 FD_ZERO(&fds); 66 FD_SET(fd, &fds); 67 68 if ((r = select(fd+1, NULL, &fds, NULL, NULL)) < 0) 69 return -1; 70 71 assert(r > 0); 72 73 return 0; 74} 75