thr_fcntl.c revision 174112
113546Sjulian/* 235509Sjb * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 313546Sjulian * All rights reserved. 413546Sjulian * 513546Sjulian * Redistribution and use in source and binary forms, with or without 613546Sjulian * modification, are permitted provided that the following conditions 713546Sjulian * are met: 813546Sjulian * 1. Redistributions of source code must retain the above copyright 913546Sjulian * notice, this list of conditions and the following disclaimer. 1013546Sjulian * 2. Redistributions in binary form must reproduce the above copyright 1113546Sjulian * notice, this list of conditions and the following disclaimer in the 1213546Sjulian * documentation and/or other materials provided with the distribution. 13165967Simp * 3. Neither the name of the author nor the names of any co-contributors 1413546Sjulian * may be used to endorse or promote products derived from this software 1513546Sjulian * without specific prior written permission. 1613546Sjulian * 1713546Sjulian * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 1813546Sjulian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1913546Sjulian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2049439Sdeischen * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2113546Sjulian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2213546Sjulian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2313546Sjulian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2413546Sjulian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2513546Sjulian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2613546Sjulian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2713546Sjulian * SUCH DAMAGE. 2813546Sjulian * 2950476Speter * $FreeBSD: head/lib/libkse/thread/thr_fcntl.c 174112 2007-11-30 17:20:29Z deischen $ 3013546Sjulian */ 31174112Sdeischen 32174112Sdeischen#include "namespace.h" 3313546Sjulian#include <stdarg.h> 3413546Sjulian#include <fcntl.h> 35174112Sdeischen#include <pthread.h> 36113658Sdeischen#include "un-namespace.h" 37103388Smini#include "thr_private.h" 3813546Sjulian 39156611SdeischenLT10_COMPAT_PRIVATE(__fcntl); 40156611SdeischenLT10_COMPAT_DEFAULT(fcntl); 41156611Sdeischen 42174112Sdeischenint __fcntl(int fd, int cmd,...); 43174112Sdeischen 4475369Sdeischen__weak_reference(__fcntl, fcntl); 4571581Sdeischen 4613546Sjulianint 4771581Sdeischen__fcntl(int fd, int cmd,...) 4856698Sjasone{ 49113658Sdeischen struct pthread *curthread = _get_curthread(); 50123312Sdavidxu int ret, check = 1; 5156698Sjasone va_list ap; 5256698Sjasone 53123312Sdavidxu _thr_cancel_enter(curthread); 5456698Sjasone 5556698Sjasone va_start(ap, cmd); 5656698Sjasone switch (cmd) { 57113658Sdeischen case F_DUPFD: 58123312Sdavidxu ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 59123312Sdavidxu /* 60123312Sdavidxu * To avoid possible file handle leak, 61123312Sdavidxu * only check cancellation point if it is failure 62123312Sdavidxu */ 63123312Sdavidxu check = (ret == -1); 64123312Sdavidxu break; 65113658Sdeischen case F_SETFD: 66113658Sdeischen case F_SETFL: 67113658Sdeischen ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 68113658Sdeischen break; 69113658Sdeischen case F_GETFD: 70113658Sdeischen case F_GETFL: 71113658Sdeischen ret = __sys_fcntl(fd, cmd); 72113658Sdeischen break; 73113658Sdeischen default: 74113658Sdeischen ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 7556698Sjasone } 7656698Sjasone va_end(ap); 7756698Sjasone 78123312Sdavidxu _thr_cancel_leave(curthread, check); 7956698Sjasone 80113658Sdeischen return (ret); 8156698Sjasone} 82