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/* $OpenBSD: readdir.c,v 1.9 2014/11/19 20:28:56 miod Exp $ */
/*
* Copyright (c) 1996 Michael Shalayeff
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*
*/
#ifndef NO_READDIR
#include <sys/types.h>
#include <sys/stat.h>
#define _KERNEL
#include <sys/fcntl.h>
#undef _KERNEL
#include "stand.h"
int
opendir(const char *name)
{
struct stat sb;
int fd;
if (stat(name, &sb) < 0)
return -1;
if (!S_ISDIR(sb.st_mode)) {
errno = ENOTDIR;
return -1;
}
/* XXX rewind needed for some dirs */
#ifdef __INTERNAL_LIBSA_CREAD
if ((fd = oopen(name, O_RDONLY)) >= 0)
olseek(fd, 0, 0);
#else
if ((fd = open(name, O_RDONLY)) >= 0)
lseek(fd, 0, SEEK_SET);
#endif
return fd;
}
int
readdir(int fd, char *dest)
{
struct open_file *f = &files[fd];
if (fd < 0 || fd >= SOPEN_MAX ||
!((f = &files[fd])->f_flags & F_READ)) {
errno = EBADF;
return (-1);
}
if (f->f_flags & F_RAW) {
errno = EOPNOTSUPP;
return (-1);
}
if ((errno = (f->f_ops->readdir)(f, dest)))
return (-1);
return 0;
}
void
closedir(int fd)
{
#ifdef __INTERNAL_LIBSA_CREAD
oclose(fd);
#else
close(fd);
#endif
}
#endif /* NO_READDIR */
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