diff options
Diffstat (limited to 'lib/libc/gen/readdir.c')
| -rw-r--r-- | lib/libc/gen/readdir.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/lib/libc/gen/readdir.c b/lib/libc/gen/readdir.c deleted file mode 100644 index b4b4c39..0000000 --- a/lib/libc/gen/readdir.c +++ /dev/null @@ -1,132 +0,0 @@ -/* - * 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. - * 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[] = "@(#)readdir.c 8.3 (Berkeley) 9/29/94"; -#endif /* LIBC_SCCS and not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include "namespace.h" -#include <sys/param.h> -#include <dirent.h> -#include <errno.h> -#include <string.h> -#include <pthread.h> -#include "un-namespace.h" - -#include "libc_private.h" -#include "telldir.h" - -/* - * get next entry in a directory. - */ -struct dirent * -_readdir_unlocked(dirp, skip) - DIR *dirp; - int skip; -{ - struct dirent *dp; - - for (;;) { - if (dirp->dd_loc >= dirp->dd_size) { - if (dirp->dd_flags & __DTF_READALL) - return (NULL); - dirp->dd_loc = 0; - } - if (dirp->dd_loc == 0 && !(dirp->dd_flags & __DTF_READALL)) { - dirp->dd_size = _getdirentries(dirp->dd_fd, - dirp->dd_buf, dirp->dd_len, &dirp->dd_seek); - if (dirp->dd_size <= 0) - return (NULL); - } - dp = (struct dirent *)(dirp->dd_buf + dirp->dd_loc); - if ((long)dp & 03L) /* bogus pointer check */ - return (NULL); - if (dp->d_reclen <= 0 || - dp->d_reclen > dirp->dd_len + 1 - dirp->dd_loc) - return (NULL); - dirp->dd_loc += dp->d_reclen; - if (dp->d_ino == 0 && skip) - continue; - if (dp->d_type == DT_WHT && (dirp->dd_flags & DTF_HIDEW)) - continue; - return (dp); - } -} - -struct dirent * -readdir(dirp) - DIR *dirp; -{ - struct dirent *dp; - - if (__isthreaded) { - _pthread_mutex_lock(&dirp->dd_lock); - dp = _readdir_unlocked(dirp, 1); - _pthread_mutex_unlock(&dirp->dd_lock); - } - else - dp = _readdir_unlocked(dirp, 1); - return (dp); -} - -int -readdir_r(dirp, entry, result) - DIR *dirp; - struct dirent *entry; - struct dirent **result; -{ - struct dirent *dp; - int saved_errno; - - saved_errno = errno; - errno = 0; - if (__isthreaded) { - _pthread_mutex_lock(&dirp->dd_lock); - if ((dp = _readdir_unlocked(dirp, 1)) != NULL) - memcpy(entry, dp, _GENERIC_DIRSIZ(dp)); - _pthread_mutex_unlock(&dirp->dd_lock); - } - else if ((dp = _readdir_unlocked(dirp, 1)) != NULL) - memcpy(entry, dp, _GENERIC_DIRSIZ(dp)); - - if (errno != 0) { - if (dp == NULL) - return (errno); - } else - errno = saved_errno; - - if (dp != NULL) - *result = entry; - else - *result = NULL; - - return (0); -} |
