1*aa772005SRobert Watson /*-
2*aa772005SRobert Watson * Copyright (c) 2012 The FreeBSD Foundation
3*aa772005SRobert Watson * All rights reserved.
4*aa772005SRobert Watson *
5*aa772005SRobert Watson * This software was developed by Pawel Jakub Dawidek under sponsorship from
6*aa772005SRobert Watson * the FreeBSD Foundation.
7*aa772005SRobert Watson *
8*aa772005SRobert Watson * Redistribution and use in source and binary forms, with or without
9*aa772005SRobert Watson * modification, are permitted provided that the following conditions
10*aa772005SRobert Watson * are met:
11*aa772005SRobert Watson * 1. Redistributions of source code must retain the above copyright
12*aa772005SRobert Watson * notice, this list of conditions and the following disclaimer.
13*aa772005SRobert Watson * 2. Redistributions in binary form must reproduce the above copyright
14*aa772005SRobert Watson * notice, this list of conditions and the following disclaimer in the
15*aa772005SRobert Watson * documentation and/or other materials provided with the distribution.
16*aa772005SRobert Watson *
17*aa772005SRobert Watson * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
18*aa772005SRobert Watson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19*aa772005SRobert Watson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20*aa772005SRobert Watson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
21*aa772005SRobert Watson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22*aa772005SRobert Watson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23*aa772005SRobert Watson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24*aa772005SRobert Watson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25*aa772005SRobert Watson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26*aa772005SRobert Watson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27*aa772005SRobert Watson * SUCH DAMAGE.
28*aa772005SRobert Watson */
29*aa772005SRobert Watson
30*aa772005SRobert Watson #ifndef _FACCESSAT_H_
31*aa772005SRobert Watson #define _FACCESSAT_H_
32*aa772005SRobert Watson
33*aa772005SRobert Watson #include <unistd.h>
34*aa772005SRobert Watson
35*aa772005SRobert Watson #define AT_EACCESS 0x01
36*aa772005SRobert Watson
37*aa772005SRobert Watson static int
faccessat(int fd,const char * path,int mode,int flag)38*aa772005SRobert Watson faccessat(int fd, const char *path, int mode, int flag)
39*aa772005SRobert Watson {
40*aa772005SRobert Watson int cfd, error, ret;
41*aa772005SRobert Watson
42*aa772005SRobert Watson if (flag == AT_EACCESS) {
43*aa772005SRobert Watson errno = EINVAL;
44*aa772005SRobert Watson return (-1);
45*aa772005SRobert Watson }
46*aa772005SRobert Watson
47*aa772005SRobert Watson cfd = open(".", O_RDONLY | O_DIRECTORY);
48*aa772005SRobert Watson if (cfd == -1)
49*aa772005SRobert Watson return (-1);
50*aa772005SRobert Watson
51*aa772005SRobert Watson if (fchdir(fd) == -1) {
52*aa772005SRobert Watson error = errno;
53*aa772005SRobert Watson (void)close(cfd);
54*aa772005SRobert Watson errno = error;
55*aa772005SRobert Watson return (-1);
56*aa772005SRobert Watson }
57*aa772005SRobert Watson
58*aa772005SRobert Watson ret = access(path, mode);
59*aa772005SRobert Watson
60*aa772005SRobert Watson error = errno;
61*aa772005SRobert Watson (void)fchdir(cfd);
62*aa772005SRobert Watson (void)close(cfd);
63*aa772005SRobert Watson errno = error;
64*aa772005SRobert Watson return (ret);
65*aa772005SRobert Watson }
66*aa772005SRobert Watson
67*aa772005SRobert Watson #endif /* !_FACCESSAT_H_ */
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