1*d60b58c8SSascha Wildner /*-
2*d60b58c8SSascha Wildner * Copyright (c) 2019 The DragonFly Project. All rights reserved.
3*d60b58c8SSascha Wildner *
4*d60b58c8SSascha Wildner * Redistribution and use in source and binary forms, with or without
5*d60b58c8SSascha Wildner * modification, are permitted provided that the following conditions
6*d60b58c8SSascha Wildner * are met:
7*d60b58c8SSascha Wildner *
8*d60b58c8SSascha Wildner * 1. Redistributions of source code must retain the above copyright
9*d60b58c8SSascha Wildner * notice, this list of conditions and the following disclaimer.
10*d60b58c8SSascha Wildner * 2. Redistributions in binary form must reproduce the above copyright
11*d60b58c8SSascha Wildner * notice, this list of conditions and the following disclaimer in
12*d60b58c8SSascha Wildner * the documentation and/or other materials provided with the
13*d60b58c8SSascha Wildner * distribution.
14*d60b58c8SSascha Wildner * 3. Neither the name of The DragonFly Project nor the names of its
15*d60b58c8SSascha Wildner * contributors may be used to endorse or promote products derived
16*d60b58c8SSascha Wildner * from this software without specific, prior written permission.
17*d60b58c8SSascha Wildner *
18*d60b58c8SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19*d60b58c8SSascha Wildner * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20*d60b58c8SSascha Wildner * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21*d60b58c8SSascha Wildner * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22*d60b58c8SSascha Wildner * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23*d60b58c8SSascha Wildner * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
24*d60b58c8SSascha Wildner * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25*d60b58c8SSascha Wildner * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26*d60b58c8SSascha Wildner * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27*d60b58c8SSascha Wildner * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
28*d60b58c8SSascha Wildner * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29*d60b58c8SSascha Wildner * SUCH DAMAGE.
30*d60b58c8SSascha Wildner */
31*d60b58c8SSascha Wildner
32*d60b58c8SSascha Wildner #include "namespace.h"
33*d60b58c8SSascha Wildner #include <errno.h>
34*d60b58c8SSascha Wildner #include <fcntl.h>
35*d60b58c8SSascha Wildner #include <sys/stat.h>
36*d60b58c8SSascha Wildner #include <machine/limits.h>
37*d60b58c8SSascha Wildner #include "un-namespace.h"
38*d60b58c8SSascha Wildner
39*d60b58c8SSascha Wildner int
posix_fadvise(int fd,off_t offset,off_t len,int advice)40*d60b58c8SSascha Wildner posix_fadvise(int fd, off_t offset, off_t len, int advice)
41*d60b58c8SSascha Wildner {
42*d60b58c8SSascha Wildner struct stat buf;
43*d60b58c8SSascha Wildner int ret;
44*d60b58c8SSascha Wildner
45*d60b58c8SSascha Wildner if (offset < 0 || len < 0 || offset > OFF_MAX - len ||
46*d60b58c8SSascha Wildner advice < POSIX_FADV_NORMAL || advice > POSIX_FADV_NOREUSE)
47*d60b58c8SSascha Wildner return (EINVAL);
48*d60b58c8SSascha Wildner if ((ret = _fstat(fd, &buf)) != 0)
49*d60b58c8SSascha Wildner return (ret);
50*d60b58c8SSascha Wildner if (S_ISFIFO(buf.st_mode))
51*d60b58c8SSascha Wildner return (ESPIPE);
52*d60b58c8SSascha Wildner /* do nothing */
53*d60b58c8SSascha Wildner return (0);
54*d60b58c8SSascha Wildner }
55