1 /* 2 * Copyright (c) 2014 The FreeBSD Foundation. 3 * 4 * Portions of this software were developed by Konstantin Belousov 5 * under sponsorship from the FreeBSD Foundation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice(s), this list of conditions and the following disclaimer as 12 * the first lines of this file unmodified other than the possible 13 * addition of one or more copyright notices. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice(s), this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 26 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 28 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 29 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/fcntl.h> 34 #include <stdarg.h> 35 #include "libc_private.h" 36 37 __weak_reference(__sys_openat, __openat); 38 __sym_compat(openat, __impl_openat, FBSD_1.1); 39 __weak_reference(openat, __impl_openat); 40 __sym_default(openat, openat, FBSD_1.2); 41 42 #pragma weak openat 43 int 44 openat(int fd, const char *path, int flags, ...) 45 { 46 va_list ap; 47 int mode; 48 49 if ((flags & O_CREAT) != 0) { 50 va_start(ap, flags); 51 mode = va_arg(ap, int); 52 va_end(ap); 53 } else { 54 mode = 0; 55 } 56 return (((int (*)(int, const char *, int, ...)) 57 __libc_interposing[INTERPOS_openat])(fd, path, flags, mode)); 58 } 59