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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libc/] [opendir.c] - Blame information for rev 846

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Line No. Rev Author Line
1 30 unneback
/*
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 *  opendir() - POSIX 1003.1b - XXX
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 *
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 *  This was copied from Newlib 1.8.0.
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 *
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 *
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 * Copyright (c) 1983 Regents of the University of California.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *      This product includes software developed by the University of
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 *      California, Berkeley and its contributors.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)opendir.c   5.11 (Berkeley) 2/23/91";
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#endif /* LIBC_SCCS and not lint */
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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/*
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 * open a directory.
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 */
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DIR *
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opendir(name)
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        const char *name;
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{
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        register DIR *dirp;
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        register int fd;
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        if ((fd = open(name, 0)) == -1)
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                return NULL;
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        if (fcntl(fd, F_SETFD, 1) == -1 ||
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            (dirp = (DIR *)malloc(sizeof(DIR))) == NULL) {
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                close (fd);
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                return NULL;
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        }
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        /*
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         * If CLSIZE is an exact multiple of DIRBLKSIZ, use a CLSIZE
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         * buffer that it cluster boundary aligned.
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         * Hopefully this can be a big win someday by allowing page trades
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         * to user space to be done by getdirentries()
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         */
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        dirp->dd_buf = malloc (512);
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        dirp->dd_len = 512;
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        if (dirp->dd_buf == NULL) {
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                close (fd);
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                return NULL;
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        }
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        dirp->dd_fd = fd;
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        dirp->dd_loc = 0;
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        dirp->dd_seek = 0;
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        /*
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         * Set up seek point for rewinddir.
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         */
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        return dirp;
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}

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