1243730Srwatson/*- 2243730Srwatson * Copyright (c) 2012 The FreeBSD Foundation 3243730Srwatson * All rights reserved. 4243730Srwatson * 5243730Srwatson * This software was developed by Pawel Jakub Dawidek under sponsorship from 6243730Srwatson * the FreeBSD Foundation. 7243730Srwatson * 8243730Srwatson * Redistribution and use in source and binary forms, with or without 9243730Srwatson * modification, are permitted provided that the following conditions 10243730Srwatson * are met: 11243730Srwatson * 1. Redistributions of source code must retain the above copyright 12243730Srwatson * notice, this list of conditions and the following disclaimer. 13243730Srwatson * 2. Redistributions in binary form must reproduce the above copyright 14243730Srwatson * notice, this list of conditions and the following disclaimer in the 15243730Srwatson * documentation and/or other materials provided with the distribution. 16243730Srwatson * 17243730Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18243730Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19243730Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20243730Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21243730Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22243730Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23243730Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24243730Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25243730Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26243730Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27243730Srwatson * SUCH DAMAGE. 28243730Srwatson */ 29243730Srwatson 30243730Srwatson#ifndef _RENAMEAT_H_ 31243730Srwatson#define _RENAMEAT_H_ 32243730Srwatson 33243730Srwatson#include <stdio.h> 34243730Srwatson#include <unistd.h> 35243730Srwatson 36243730Srwatsonstatic int 37243730Srwatsonrenameat(int fromfd, const char *from, int tofd, const char *to) 38243730Srwatson{ 39243730Srwatson int cfd, error, ret; 40243730Srwatson 41243730Srwatson if (fromfd != tofd) { 42243730Srwatson errno = EINVAL; 43243730Srwatson return (-1); 44243730Srwatson } 45243730Srwatson 46243730Srwatson cfd = open(".", O_RDONLY | O_DIRECTORY); 47243730Srwatson if (cfd == -1) 48243730Srwatson return (-1); 49243730Srwatson 50243730Srwatson if (fchdir(fromfd) == -1) { 51243730Srwatson error = errno; 52243730Srwatson (void)close(cfd); 53243730Srwatson errno = error; 54243730Srwatson return (-1); 55243730Srwatson } 56243730Srwatson 57243730Srwatson ret = rename(from, to); 58243730Srwatson 59243730Srwatson error = errno; 60243730Srwatson (void)fchdir(cfd); 61243730Srwatson (void)close(cfd); 62243730Srwatson errno = error; 63243730Srwatson return (ret); 64243730Srwatson} 65243730Srwatson 66243730Srwatson#endif /* !_RENAMEAT_H_ */ 67