diff options
| author | gwr <gwr@NetBSD.org> | 1999-05-19 03:53:03 +0000 |
|---|---|---|
| committer | gwr <gwr@NetBSD.org> | 1999-05-19 03:53:03 +0000 |
| commit | 1cf8e1e36bc28f3a0cc2aa31d48cb34a4e66e6c1 (patch) | |
| tree | 909f6df7214d6c13f2c808948f3016acf9488638 /distrib/utils/libhack | |
| parent | 1e4c25754e4e0a8692af1e616050fd2f88585db9 (diff) | |
Prune out references to qsort in opendir unionfs code.
(Never needed on a ramdisk root.)
Diffstat (limited to 'distrib/utils/libhack')
| -rw-r--r-- | distrib/utils/libhack/opendir.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/distrib/utils/libhack/opendir.c b/distrib/utils/libhack/opendir.c new file mode 100644 index 00000000000..cd780cfc983 --- /dev/null +++ b/distrib/utils/libhack/opendir.c @@ -0,0 +1,97 @@ +/* $NetBSD: opendir.c,v 1.1 1999/05/19 03:53:03 gwr Exp $ */ + +/* + * Copyright (c) 1983, 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. 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. + */ + +#include <sys/param.h> +#include <sys/mount.h> +#include <sys/stat.h> + +#include <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +/* + * Open a directory. + */ +DIR * +opendir(name) + const char *name; +{ + DIR *dirp; + int fd; + struct stat sb; + int pagesz; + + if ((fd = open(name, O_RDONLY | O_NONBLOCK)) == -1) + return (NULL); + if (fstat(fd, &sb) || !S_ISDIR(sb.st_mode)) { + errno = ENOTDIR; + close(fd); + return (NULL); + } + if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1 || + (dirp = (DIR *)malloc(sizeof(DIR))) == NULL) { + close(fd); + return (NULL); + } + + /* + * Determine whether this directory is the top of a union stack. + * (Never is on a ramdisk) + */ + { + dirp->dd_len = DIRBLKSIZ; + dirp->dd_buf = malloc((size_t)dirp->dd_len); + if (dirp->dd_buf == NULL) { + free(dirp); + close (fd); + return (NULL); + } + dirp->dd_seek = 0; + } + + dirp->dd_loc = 0; + dirp->dd_fd = fd; + dirp->dd_flags = DTF_HIDEW; + + /* + * Set up seek point for rewinddir. + */ + dirp->dd_rewind = telldir(dirp); + + return (dirp); +} |
