1 /*- 2 * Copyright (c) 2012 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Pawel Jakub Dawidek under sponsorship from 6 * the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $P4: //depot/projects/trustedbsd/openbsm/bin/auditdistd/renameat.h#1 $ 30 */ 31 32 #ifndef _RENAMEAT_H_ 33 #define _RENAMEAT_H_ 34 35 #include <stdio.h> 36 #include <unistd.h> 37 38 static int 39 renameat(int fromfd, const char *from, int tofd, const char *to) 40 { 41 int cfd, error, ret; 42 43 if (fromfd != tofd) { 44 errno = EINVAL; 45 return (-1); 46 } 47 48 cfd = open(".", O_RDONLY | O_DIRECTORY); 49 if (cfd == -1) 50 return (-1); 51 52 if (fchdir(fromfd) == -1) { 53 error = errno; 54 (void)close(cfd); 55 errno = error; 56 return (-1); 57 } 58 59 ret = rename(from, to); 60 61 error = errno; 62 (void)fchdir(cfd); 63 (void)close(cfd); 64 errno = error; 65 return (ret); 66 } 67 68 #endif /* !_RENAMEAT_H_ */ 69