1 /* 2 * poll_posix: poll compatibility wrapper for POSIX systems 3 * Copyright 2013 RealVNC Ltd. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; either 8 * version 2.1 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 * 19 */ 20 21 #include <config.h> 22 23 #include <unistd.h> 24 #include <fcntl.h> 25 #include <errno.h> 26 #include <stdlib.h> 27 28 #include "libusbi.h" 29 30 int usbi_pipe(int pipefd[2]) 31 { 32 int ret = pipe(pipefd); 33 if (ret != 0) { 34 return ret; 35 } 36 ret = fcntl(pipefd[1], F_GETFL); 37 if (ret == -1) { 38 usbi_dbg("Failed to get pipe fd flags: %d", errno); 39 goto err_close_pipe; 40 } 41 ret = fcntl(pipefd[1], F_SETFL, ret | O_NONBLOCK); 42 if (ret != 0) { 43 usbi_dbg("Failed to set non-blocking on new pipe: %d", errno); 44 goto err_close_pipe; 45 } 46 47 return 0; 48 49 err_close_pipe: 50 usbi_close(pipefd[0]); 51 usbi_close(pipefd[1]); 52 return ret; 53 } 54
