ino64: Remove 'forward compat' code for this

Forward compatibility code was added for running newer ino64 binaries on
older kernels as a transition aide. Now that ino64 has been in the tree
6 years, this code is no longer useful and should have been removed long
ago.  Remove it now. Should be no user-visible changes at this point as
all the 'upgrade' scenarios it was intended for are long since past.

Also need to remove this stuff from rtld since the _foo versions
no longer exist.

Sponsored by:		Netflix
Reviewed by:		kib
Differential Revision:	https://reviews.freebsd.org/D42382

13 files changed, 21 insertions, 507 deletions

diff --git a/UPDATING b/UPDATING
index 722d7d66acbe..1ee0731742b3 100644
--- a/UPDATING
+++ b/UPDATING
@@ -27,6 +27,10 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 15.x IS SLOW:
 	world, or to merely disable the most expensive debugging functionality
 	at runtime, run "ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20231027:
+	Forward compatibility (running the new code on old kernels) for the
+	"ino64" project have been removed. The need for it has passed long ago.
+
 20231018:
 	Commit 57ce37f9dcd0 changed the internal KAPI between the
 	nfscommon and nfscl modules.  Both must be rebuilt from sources.
@@ -1573,6 +1577,14 @@ https://lists.freebsd.org/archives/freebsd-current/2021-June/000153.html
 	Switch back to the BSDL dtc (Device Tree Compiler). Set WITH_GPL_DTC
 	if you require the GPL compiler.
 
+20170619:
+	Forward compatibility for the "ino64" project have been committed. This
+	will allow most new binaries to run on older kernels in a limited
+	fashion.  This prevents many of the common foot-shooting actions in the
+	upgrade as well as the limited ability to roll back the kernel across
+	the ino64 upgrade. Complicated use cases may not work properly, though
+	enough simpler ones work to allow recovery in most situations.
+
 20170618:
 	The internal ABI used for communication between the NFS kernel modules
 	was changed by r320085, so __FreeBSD_version was bumped to
diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index f52487a3fef2..e9a9f8f5935c 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -38,14 +38,6 @@ SRCS+= getdents.c lstat.c mknod.c stat.c
 NOASM+=  sched_getcpu.o
 PSEUDO+= _sched_getcpu.o
 
-SRCS+= fstat.c fstatat.c fstatfs.c getfsstat.c statfs.c
-NOASM+= fstat.o fstatat.o fstatfs.o getfsstat.o statfs.o
-PSEUDO+= _fstat.o _fstatat.o _fstatfs.o _getfsstat.o _statfs.o
-
-SRCS+= getdirentries.c
-NOASM+= getdirentries.o
-PSEUDO+= _getdirentries.o
-
 SRCS+= brk.c
 SRCS+= closefrom.c
 SRCS+= pipe.c
diff --git a/lib/libc/sys/compat-ino64.h b/lib/libc/sys/compat-ino64.h
deleted file mode 100644
index ded3c6c64124..000000000000
--- a/lib/libc/sys/compat-ino64.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/*-
- * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- */
-
-/*
- * Forward compatibility shim to convert old stat buffer to
- * new so we can call the old system call, but return data in
- * the new system call's format.
- */
-#define _WANT_FREEBSD11_STATFS
-#include <sys/fcntl.h>
-#include <sys/mount.h>
-
-#define _WANT_FREEBSD11_STAT
-#include <sys/stat.h>
-
-#include <string.h>
-
-#define INO64_FIRST 1200031
-
-static __inline void
-__stat11_to_stat(const struct freebsd11_stat *sb11, struct stat *sb)
-{
-
-	sb->st_dev = sb11->st_dev;
-	sb->st_ino = sb11->st_ino;
-	sb->st_nlink = sb11->st_nlink;
-	sb->st_mode = sb11->st_mode;
-	sb->st_uid = sb11->st_uid;
-	sb->st_gid = sb11->st_gid;
-	sb->st_rdev = sb11->st_rdev;
-	sb->st_atim = sb11->st_atim;
-	sb->st_mtim = sb11->st_mtim;
-	sb->st_ctim = sb11->st_ctim;
-#ifdef __STAT_TIME_T_EXT
-	sb->st_atim_ext = 0;
-	sb->st_mtim_ext = 0;
-	sb->st_ctim_ext = 0;
-	sb->st_btim_ext = 0;
-#endif
-	sb->st_birthtim = sb11->st_birthtim;
-	sb->st_size = sb11->st_size;
-	sb->st_blocks = sb11->st_blocks;
-	sb->st_blksize = sb11->st_blksize;
-	sb->st_flags = sb11->st_flags;
-	sb->st_gen = sb11->st_gen;
-	sb->st_padding0 = 0;
-	sb->st_padding1 = 0;
-	memset(sb->st_spare, 0, sizeof(sb->st_spare));
-}
-
-static __inline void
-__statfs11_to_statfs(const struct freebsd11_statfs *sf11, struct statfs *sf)
-{
-
-	sf->f_version = STATFS_VERSION;
-	sf->f_type = sf11->f_type;
-	sf->f_flags = sf11->f_flags;
-	sf->f_bsize = sf11->f_bsize;
-	sf->f_iosize = sf11->f_iosize;
-	sf->f_blocks = sf11->f_blocks;
-	sf->f_bfree = sf11->f_bfree;
-	sf->f_bavail = sf11->f_bavail;
-	sf->f_files = sf11->f_files;
-	sf->f_ffree = sf11->f_ffree;
-	sf->f_syncwrites = sf11->f_syncwrites;
-	sf->f_asyncwrites = sf11->f_asyncwrites;
-	sf->f_syncreads = sf11->f_syncreads;
-	sf->f_asyncreads = sf11->f_asyncreads;
-	sf->f_namemax = sf11->f_namemax;
-	sf->f_owner = sf11->f_owner;
-	sf->f_fsid = sf11->f_fsid;
-	memset(sf->f_spare, 0, sizeof(sf->f_spare));
-	memset(sf->f_charspare, 0, sizeof(sf->f_charspare));
-	strlcpy(sf->f_fstypename, sf11->f_fstypename, sizeof(sf->f_fstypename));
-	strlcpy(sf->f_mntfromname, sf11->f_mntfromname, sizeof(sf->f_mntfromname));
-	strlcpy(sf->f_mntonname, sf11->f_mntonname, sizeof(sf->f_mntonname));
-}
diff --git a/lib/libc/sys/fstat.c b/lib/libc/sys/fstat.c
deleted file mode 100644
index 4efeecfd0978..000000000000
--- a/lib/libc/sys/fstat.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*-
- * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
-#include "namespace.h"
-#include <sys/param.h>
-#include <sys/syscall.h>
-#include "compat-ino64.h"
-#include <unistd.h>
-
-#include "libc_private.h"
-
-#undef fstat
-__weak_reference(_fstat, fstat);
-
-#pragma weak _fstat
-int
-_fstat(int fd, struct stat *sb)
-{
-	struct freebsd11_stat stat11;
-	int rv;
-
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_fstat(fd, sb));
-	rv = syscall(SYS_freebsd11_fstat, fd, &stat11);
-	if (rv == 0)
-		__stat11_to_stat(&stat11, sb);
-	return (rv);
-}
diff --git a/lib/libc/sys/fstatat.c b/lib/libc/sys/fstatat.c
deleted file mode 100644
index d83647f98da1..000000000000
--- a/lib/libc/sys/fstatat.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/*-
- * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
-#include "namespace.h"
-#include <sys/param.h>
-#include <sys/syscall.h>
-#include "compat-ino64.h"
-#include <unistd.h>
-
-#include "libc_private.h"
-
-int
-fstatat(int fd, const char *path, struct stat *sb, int flag)
-{
-	struct freebsd11_stat stat11;
-	int rv;
-
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_fstatat(fd, path, sb, flag));
-	rv = syscall(SYS_freebsd11_fstatat, fd, path, &stat11, flag);
-	if (rv == 0)
-		__stat11_to_stat(&stat11, sb);
-	return (rv);
-}
diff --git a/lib/libc/sys/fstatfs.c b/lib/libc/sys/fstatfs.c
deleted file mode 100644
index 517ba2a420b6..000000000000
--- a/lib/libc/sys/fstatfs.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*-
- * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
-#include "namespace.h"
-#include <sys/param.h>
-#include <sys/syscall.h>
-#include "compat-ino64.h"
-#include <unistd.h>
-
-#include "libc_private.h"
-
-#undef fstatfs
-__weak_reference(_fstatfs, fstatfs);
-
-#pragma weak _fstatfs
-int
-_fstatfs(int fd, struct statfs *buf)
-{
-	struct freebsd11_statfs statfs11;
-	int rv;
-
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_fstatfs(fd, buf));
-	rv = syscall(SYS_freebsd11_fstatfs, fd, &statfs11);
-	if (rv == 0)
-		__statfs11_to_statfs(&statfs11, buf);
-	return (rv);
-}
diff --git a/lib/libc/sys/getdents.c b/lib/libc/sys/getdents.c
index b34b7003a729..673b7d62d1ee 100644
--- a/lib/libc/sys/getdents.c
+++ b/lib/libc/sys/getdents.c
@@ -34,11 +34,6 @@
 ssize_t
 getdents(int fd, char *buf, size_t nbytes)
 {
-	/*
-	 * _getdirentries knows how to call the right thing and
-	 * return it in the new format. It assumes that the entire
-	 * libc expecting the new format.
-	 */
 
-	return (_getdirentries(fd, buf, nbytes, NULL));
+	return (__sys_getdirentries(fd, buf, nbytes, NULL));
 }
diff --git a/lib/libc/sys/getdirentries.c b/lib/libc/sys/getdirentries.c
deleted file mode 100644
index 92f43e74cab7..000000000000
--- a/lib/libc/sys/getdirentries.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*-
- * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
-#define _WANT_FREEBSD11_DIRENT
-
-#include "namespace.h"
-#include <sys/param.h>
-#include <sys/syscall.h>
-#include "compat-ino64.h"
-#include <dirent.h>
-#include <errno.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include "libc_private.h"
-
-static ssize_t
-__cvt_dirents_from11(const char *de11, ssize_t len11, char *de, ssize_t len)
-{
-	struct dirent *dst;
-	const struct freebsd11_dirent *src;
-	const char *edst, *esrc;
-	ssize_t rlen;
-
-	src = (const struct freebsd11_dirent *)de11;
-	dst = (struct dirent *)de;
-	esrc = de11 + len11;
-	edst = de + len;
-	while ((const char *)src < esrc && (const char *)dst < edst) {
-		rlen = roundup(offsetof(struct dirent, d_name) + src->d_namlen + 1, 8);
-		if ((const char *)dst + rlen >= edst)
-			break;
-		dst->d_fileno = src->d_fileno;
-		dst->d_off = 0;			/* nothing uses it yet, so safe for now */
-		dst->d_reclen = rlen;
-		dst->d_type = src->d_type;
-		dst->d_pad0 = 0;
-		dst->d_namlen = src->d_namlen;
-		dst->d_pad1 = 0;
-		memset(dst->d_name, 0, roundup(src->d_namlen + 1, 8));
-		memcpy(dst->d_name, src->d_name, src->d_namlen);
-		dst = (struct dirent *)((char *)dst + rlen);
-		src = (const struct freebsd11_dirent *)((const char *)src + src->d_reclen);
-	}
-	return ((char *)dst - de);
-}
-
-#undef getdirentries
-__weak_reference(_getdirentries, getdirentries);
-
-#pragma weak _getdirentries
-ssize_t
-_getdirentries(int fd, char *buf, size_t nbytes, off_t *basep)
-{
-	char *oldbuf;
-	size_t len;
-	ssize_t rv;
-
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_getdirentries(fd, buf, nbytes, basep));
-
-	/*
-	 * Because the old system call returns entries that are smaller than the
-	 * new, we could wind up in a situation where we have too many to fit in
-	 * the buffer with the new encoding. So sacrifice a small bit of
-	 * efficiency to ensure that never happens. We pick 1/4 the size round
-	 * up to the next DIRBLKSIZ. This will guarnatee enough room exists in
-	 * the dst buffer due to changes in efficiency in packing dirent
-	 * entries. We don't check against minimum block size to avoid a lot of
-	 * stat calls, we'll see if that's wise or not.
-	 * TBD: Will this difference matter to lseek?
-	 */
-	len = roundup(nbytes / 4, DIRBLKSIZ);
-	oldbuf = malloc(len);
-	if (oldbuf == NULL) {
-		errno = EINVAL;		/* ENOMEM not in possible list */
-		return (-1);
-	}
-	rv = syscall(SYS_freebsd11_getdirentries, fd, oldbuf, len, basep);
-	if (rv == -1) {
-		free(oldbuf);
-		return (rv);
-	}
-	if (rv > 0)
-		rv = __cvt_dirents_from11(oldbuf, rv, buf, nbytes);
-	free(oldbuf);
-
-	return (rv);
-}
diff --git a/lib/libc/sys/getfsstat.c b/lib/libc/sys/getfsstat.c
deleted file mode 100644
index 60cd433c9d40..000000000000
--- a/lib/libc/sys/getfsstat.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*-
- * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
-#include "namespace.h"
-#include <sys/param.h>
-#include "compat-ino64.h"
-#include <sys/errno.h>
-#include <sys/syscall.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include "libc_private.h"
-
-int
-getfsstat(struct statfs *buf, long bufsize, int flags)
-{
-	struct freebsd11_statfs *statfs11 = NULL;
-	ssize_t len = 0;
-	int rv, i;
-
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_getfsstat(buf, bufsize, flags));
-	if (buf != NULL) {
-		len = sizeof(struct freebsd11_statfs) *	/* Round down on purpose to avoid */
-		    (bufsize / sizeof(struct statfs));	/* overflow on translation.	  */
-		statfs11 = malloc(len);
-		if (statfs11 == NULL) {
-			errno = ENOMEM;
-			return (-1);
-		}
-	}
-	rv = syscall(SYS_freebsd11_getfsstat, statfs11, len, flags);
-	if (rv != -1 && buf != NULL) {
-		for (i = 0; i < rv; i++)
-			__statfs11_to_statfs(&statfs11[i], &buf[i]);
-	}
-	free(statfs11);
-	return (rv);
-}
diff --git a/lib/libc/sys/lstat.c b/lib/libc/sys/lstat.c
index c9c3351e79fc..b335946d2f3c 100644
--- a/lib/libc/sys/lstat.c
+++ b/lib/libc/sys/lstat.c
@@ -27,22 +27,15 @@
 #include <sys/cdefs.h>
 #include "namespace.h"
 #include <sys/param.h>
+#include <sys/fcntl.h>
 #include <sys/syscall.h>
-#include "compat-ino64.h"
+#include <sys/stat.h>
 #include <unistd.h>
-
 #include "libc_private.h"
 
 int
 lstat(const char *path, struct stat *sb)
 {
-	struct freebsd11_stat stat11;
-	int rv;
 
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_fstatat(AT_FDCWD, path, sb, AT_SYMLINK_NOFOLLOW));
-	rv = syscall(SYS_freebsd11_lstat, path, &stat11);
-	if (rv == 0)
-		__stat11_to_stat(&stat11, sb);
-	return (rv);
+	return (__sys_fstatat(AT_FDCWD, path, sb, AT_SYMLINK_NOFOLLOW));
 }
diff --git a/lib/libc/sys/stat.c b/lib/libc/sys/stat.c
index dc9ef16c79e7..88a4e784adff 100644
--- a/lib/libc/sys/stat.c
+++ b/lib/libc/sys/stat.c
@@ -27,22 +27,15 @@
 #include <sys/cdefs.h>
 #include "namespace.h"
 #include <sys/param.h>
+#include <sys/fcntl.h>
 #include <sys/syscall.h>
-#include "compat-ino64.h"
+#include <sys/stat.h>
 #include <unistd.h>
-
 #include "libc_private.h"
 
 int
 stat(const char *path, struct stat *sb)
 {
-	struct freebsd11_stat stat11;
-	int rv;
 
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_fstatat(AT_FDCWD, path, sb, 0));
-	rv = syscall(SYS_freebsd11_stat, path, &stat11);
-	if (rv == 0)
-		__stat11_to_stat(&stat11, sb);
-	return (rv);
+	return (__sys_fstatat(AT_FDCWD, path, sb, 0));
 }
diff --git a/lib/libc/sys/statfs.c b/lib/libc/sys/statfs.c
deleted file mode 100644
index b8ac38b131ca..000000000000
--- a/lib/libc/sys/statfs.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/*-
- * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/cdefs.h>
-#include "namespace.h"
-#include <sys/param.h>
-#include <sys/syscall.h>
-#include "compat-ino64.h"
-#include <unistd.h>
-
-#include "libc_private.h"
-
-int
-statfs(const char *path, struct statfs *buf)
-{
-	struct freebsd11_statfs statfs11;
-	int rv;
-
-	if (__getosreldate() >= INO64_FIRST)
-		return (__sys_statfs(path, buf));
-	rv = syscall(SYS_freebsd11_statfs, path, &statfs11);
-	if (rv == 0)
-		__statfs11_to_statfs(&statfs11, buf);
-	return (rv);
-}
diff --git a/libexec/rtld-elf/rtld-libc/Makefile.inc b/libexec/rtld-elf/rtld-libc/Makefile.inc
index 91eb6f5cabec..c3a74fbecbdc 100644
--- a/libexec/rtld-elf/rtld-libc/Makefile.inc
+++ b/libexec/rtld-elf/rtld-libc/Makefile.inc
@@ -56,8 +56,8 @@ CFLAGS.strtok.c+=-Wno-cast-qual
 _libc_other_objects= sigsetjmp lstat stat fstat fstatat fstatfs syscall \
     cerror geteuid getegid sigfastblock munmap mprotect \
     sysarch __sysctl issetugid __getcwd utrace getpid \
-    thr_self thr_kill pread mmap lseek _exit _fstat _fstatat _fstatfs \
-    getdirentries _getdirentries _close _fcntl _open _openat _read \
+    thr_self thr_kill pread mmap lseek _exit \
+    getdirentries _close _fcntl _open _openat _read \
     _sigprocmask _write readlink __realpathat _setjmp setjmp setjmperr