1 /* @(#)faccessat.c 1.1 14/05/11 Copyright 2013-2014 J. Schilling */ 2 /* 3 * Emulate the behavior of faccessat(int fd, const char *name, 4 * int amode, int flag) 5 * 6 * Note that emulation methods that do not use the /proc filesystem are 7 * not MT safe. In the non-MT-safe case, we do: 8 * 9 * savewd()/fchdir()/open(name)/restorewd() 10 * 11 * Errors may force us to abort the program as our caller is not expected 12 * to know that we do more than a simple open() here and that the 13 * working directory may be changed by us. 14 * 15 * Copyright (c) 2013-2014 J. Schilling 16 */ 17 /* 18 * The contents of this file are subject to the terms of the 19 * Common Development and Distribution License, Version 1.0 only 20 * (the "License"). You may not use this file except in compliance 21 * with the License. 22 * 23 * See the file CDDL.Schily.txt in this distribution for details. 24 * A copy of the CDDL is also available via the Internet at 25 * http://www.opensource.org/licenses/cddl1.txt 26 * 27 * When distributing Covered Code, include this CDDL HEADER in each 28 * file and include the License file CDDL.Schily.txt from this distribution. 29 */ 30 31 #include <schily/unistd.h> 32 #include <schily/types.h> 33 #include <schily/fcntl.h> 34 #include <schily/maxpath.h> 35 #include <schily/errno.h> 36 #include <schily/standard.h> 37 #include <schily/schily.h> 38 #include "at-defs.h" 39 40 #ifndef HAVE_FACCESSAT 41 42 /* CSTYLED */ 43 #define PROTO_DECL , int amode, int flag 44 #define KR_DECL int amode; int flag; 45 /* CSTYLED */ 46 #define KR_ARGS , amode, flag 47 #define FUNC_CALL(n) (flag & AT_EACCESS ? \ 48 eaccess(n, amode) : access(n, amode)) 49 #define FLAG_CHECK() if (flag & ~(AT_EACCESS)) { \ 50 seterrno(EINVAL); \ 51 return (-1); \ 52 } 53 #define FUNC_NAME faccessat 54 #define FUNC_RESULT int 55 56 #include "at-base.c" 57 58 #endif /* HAVE_FCHOWNAT */ 59