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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [posix/] [opendir.c] - Rev 301
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#ifndef HAVE_OPENDIR /* * Copyright (c) 1983 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)opendir.c 5.11 (Berkeley) 2/23/91"; #endif /* LIBC_SCCS and not lint */ #include <dirent.h> #include <fcntl.h> #include <stdlib.h> #include <unistd.h> #include <sys/lock.h> /* * open a directory. */ DIR * _DEFUN(opendir, (name), const char *name) { register DIR *dirp; register int fd; int rc = 0; if ((fd = open(name, 0)) == -1) return NULL; #ifdef HAVE_FCNTL rc = fcntl(fd, F_SETFD, 1); #endif if (rc == -1 || (dirp = (DIR *)malloc(sizeof(DIR))) == NULL) { close (fd); return NULL; } /* * If CLSIZE is an exact multiple of DIRBLKSIZ, use a CLSIZE * buffer that it cluster boundary aligned. * Hopefully this can be a big win someday by allowing page trades * to user space to be done by getdirentries() */ dirp->dd_buf = malloc (512); dirp->dd_len = 512; if (dirp->dd_buf == NULL) { close (fd); return NULL; } dirp->dd_fd = fd; dirp->dd_loc = 0; dirp->dd_seek = 0; /* * Set up seek point for rewinddir. */ #ifdef HAVE_DD_LOCK /* if we have a locking mechanism, initialize it */ __lock_init_recursive(dirp->dd_lock); #endif return dirp; } #endif /* ! HAVE_OPENDIR */
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