1 /* @(#)fstatat.c 1.2 13/10/30 Copyright 2013 J. Schilling */ 2 /* 3 * Emulate the behavior of fstatat(int fd, const char *name, 4 * struct stat *sbuf, 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 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/stat.h> 35 #include <schily/maxpath.h> 36 #include <schily/errno.h> 37 #include <schily/standard.h> 38 #include <schily/schily.h> 39 #include "at-defs.h" 40 41 #ifndef HAVE_FSTATAT 42 43 #ifndef HAVE_LSTAT 44 #define lstat stat 45 #endif 46 47 /* CSTYLED */ 48 #define PROTO_DECL , struct stat *sbuf, int flag 49 #define KR_DECL struct stat *sbuf; int flag; 50 /* CSTYLED */ 51 #define KR_ARGS , sbuf, flag 52 #define FUNC_CALL(n) (flag & AT_SYMLINK_NOFOLLOW ? \ 53 lstat(n, sbuf) : stat(n, sbuf)) 54 #define FLAG_CHECK() if (flag & ~(AT_SYMLINK_NOFOLLOW|_AT_TRIGGER)) { \ 55 seterrno(EINVAL); \ 56 return (-1); \ 57 } 58 #define FUNC_NAME fstatat 59 #define FUNC_RESULT int 60 61 #include "at-base.c" 62 63 #endif /* HAVE_FSTATAT */ 64