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gen/FreeBSD/readdir.c Libc-1725.40.4 /dev/null
--- Libc/Libc-1725.40.4/gen/FreeBSD/readdir.c
+++ /dev/null
@@ -1,174 +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 <stdlib.h>
-#include <string.h>
-#include <unistd.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(DIR *dirp, int skip)
-{
-	struct dirent *dp;
-	long initial_seek;
-	long initial_loc = 0;
-
-	for (;;) {
-		if (dirp->dd_loc >= dirp->dd_size) {
-			if (dirp->dd_flags & (__DTF_READALL | __DTF_ATEND))
-				return (NULL);
-			initial_loc = dirp->dd_loc;
-			dirp->dd_flags &= ~__DTF_SKIPREAD;
-			dirp->dd_loc = 0;
-		}
-		if (dirp->dd_loc == 0 &&
-		    !(dirp->dd_flags & (__DTF_READALL | __DTF_ATEND | __DTF_SKIPREAD))) {
-			if (dirp->dd_len == READDIR_INITIAL_SIZE) {
-				/*
-				 * If we need to read more, and we still have the original size,
-				 * then grow the internal buffer to a large size to amortize
-				 * the cost of __getdirentries64 calls.
-				 */
-				int len = READDIR_LARGE_SIZE;
-				char *buf = malloc(len);
-				if (buf) {
-					free(dirp->dd_buf);
-					dirp->dd_buf = buf;
-					dirp->dd_len = len;
-				}
-			}
-#if __DARWIN_64_BIT_INO_T
-			/*
-			 * sufficiently recent kernels when the buffer is large enough,
-			 * will use the last bytes of the buffer to return status.
-			 *
-			 * To support older kernels:
-			 * - make sure it's 0 initialized
-			 * - make sure it's past `dd_size` before reading it
-			 */
-			getdirentries64_flags_t *gdeflags =
-			    (getdirentries64_flags_t *)(dirp->dd_buf + dirp->dd_len -
-			    sizeof(getdirentries64_flags_t));
-			*gdeflags = 0;
-			initial_seek = dirp->dd_td->seekoff;
-			dirp->dd_size = (long)__getdirentries64(dirp->dd_fd,
-			    dirp->dd_buf, dirp->dd_len, &dirp->dd_td->seekoff);
-			if (dirp->dd_size >= 0 &&
-			    dirp->dd_size <= dirp->dd_len - sizeof(getdirentries64_flags_t)) {
-				if (*gdeflags & GETDIRENTRIES64_EOF) {
-					dirp->dd_flags |= __DTF_ATEND;
-				}
-			}
-#else /* !__DARWIN_64_BIT_INO_T */
-			initial_seek = dirp->dd_seek;
-			dirp->dd_size = _getdirentries(dirp->dd_fd,
-			    dirp->dd_buf, dirp->dd_len, &dirp->dd_seek);
-#endif /* __DARWIN_64_BIT_INO_T */
-			if (dirp->dd_size <= 0)
-				return (NULL);
-			_fixtelldir(dirp, initial_seek, initial_loc);
-		}
-		dirp->dd_flags &= ~__DTF_SKIPREAD;
-		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(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(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);
-}