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/* $OpenBSD: fchmod.c,v 1.3 2023/04/08 18:12:08 kn Exp $ */
/* $NetBSD: stat.c,v 1.3 1994/10/26 05:45:07 cgd Exp $ */
/*-
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)stat.c 8.1 (Berkeley) 6/11/93
*/
#include "stand.h"
int
fchmod(int fd, mode_t m)
{
struct open_file *f = &files[fd];
if (f->f_ops->fchmod == NULL) {
errno = EOPNOTSUPP;
return (-1);
}
if ((unsigned)fd >= SOPEN_MAX || f->f_flags == 0) {
errno = EBADF;
return (-1);
}
/* operation not defined on raw devices */
if (f->f_flags & F_RAW) {
errno = EOPNOTSUPP;
return (-1);
}
/* writing is broken or unsupported */
if (f->f_flags & F_NOWRITE) {
errno = EOPNOTSUPP;
return (-1);
}
if ((errno = (f->f_ops->fchmod)(f, m)))
return (-1);
return (0);
}
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