--- /dev/null
+++ Libc/Libc-1669.40.2/gen/FreeBSD/readdir.c
@@ -0,0 +1,174 @@
+/*
+ * 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);
+}