Commit the 64-bit inode project.

Extend the ino_t, dev_t, nlink_t types to 64-bit ints.  Modify
struct dirent layout to add d_off, increase the size of d_fileno
to 64-bits, increase the size of d_namlen to 16-bits, and change
the required alignment.  Increase struct statfs f_mntfromname[] and
f_mntonname[] array length MNAMELEN to 1024.

ABI breakage is mitigated by providing compatibility using versioned
symbols, ingenious use of the existing padding in structures, and
by employing other tricks.  Unfortunately, not everything can be
fixed, especially outside the base system.  For instance, third-party
APIs which pass struct stat around are broken in backward and
forward incompatible ways.

Kinfo sysctl MIBs ABI is changed in backward-compatible way, but
there is no general mechanism to handle other sysctl MIBS which
return structures where the layout has changed. It was considered
that the breakage is either in the management interfaces, where we
usually allow ABI slip, or is not important.

Struct xvnode changed layout, no compat shims are provided.

For struct xtty, dev_t tty device member was reduced to uint32_t.
It was decided that keeping ABI compat in this case is more useful
than reporting 64-bit dev_t, for the sake of pstat.

Update note: strictly follow the instructions in UPDATING.  Build
and install the new kernel with COMPAT_FREEBSD11 option enabled,
then reboot, and only then install new world.

Credits: The 64-bit inode project, also known as ino64, started life
many years ago as a project by Gleb Kurtsou (gleb).  Kirk McKusick
(mckusick) then picked up and updated the patch, and acted as a
flag-waver.  Feedback, suggestions, and discussions were carried
by Ed Maste (emaste), John Baldwin (jhb), Jilles Tjoelker (jilles),
and Rick Macklem (rmacklem).  Kris Moore (kris) performed an initial
ports investigation followed by an exp-run by Antoine Brodin (antoine).
Essential and all-embracing testing was done by Peter Holm (pho).
The heavy lifting of coordinating all these efforts and bringing the
project to completion were done by Konstantin Belousov (kib).

Sponsored by:	The FreeBSD Foundation (emaste, kib)
Differential revision:	https://reviews.freebsd.org/D10439

8 files changed, 194 insertions, 35 deletions

diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index 76eeebd9d71c..b641125096d1 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -35,6 +35,8 @@ SRCS+=	\
 	__error.c \
 	interposing_table.c
 
+SRCS+= getdents.c lstat.c mknod.c stat.c
+
 SRCS+= futimens.c utimensat.c
 NOASM+= futimens.o utimensat.o
 PSEUDO+= _futimens.o _utimensat.o
diff --git a/lib/libc/sys/Symbol.map b/lib/libc/sys/Symbol.map
index 6a5c838a762b..feccda6f6bf4 100644
--- a/lib/libc/sys/Symbol.map
+++ b/lib/libc/sys/Symbol.map
@@ -85,26 +85,19 @@ FBSD_1.0 {
 	fchown;
 	fcntl;
 	fhopen;
-	fhstat;
-	fhstatfs;
 	flock;
 	fork;
 	fpathconf;
-	fstat;
-	fstatfs;
 	fsync;
 	futimes;
 	getaudit;
 	getaudit_addr;
 	getauid;
 	getcontext;
-	getdents;
-	getdirentries;
 	getdtablesize;
 	getegid;
 	geteuid;
 	getfh;
-	getfsstat;
 	getgid;
 	getgroups;
 	getitimer;
@@ -163,7 +156,6 @@ FBSD_1.0 {
 	link;
 	lio_listio;
 	listen;
-	lstat;
 	lutimes;
 	mac_syscall;
 	madvise;
@@ -171,7 +163,6 @@ FBSD_1.0 {
 	minherit;
 	mkdir;
 	mkfifo;
-	mknod;
 	mlock;
 	mlockall;
 	modfind;
@@ -192,10 +183,7 @@ FBSD_1.0 {
 	netbsd_lchown;
 	netbsd_msync;
 	nfssvc;
-	nfstat;
-	nlstat;
 	nmount;
-	nstat;
 	ntp_adjtime;
 	ntp_gettime;
 	open;
@@ -275,8 +263,6 @@ FBSD_1.0 {
 	sigwaitinfo;
 	socket;
 	socketpair;
-	stat;
-	statfs;
 	swapoff;
 	swapon;
 	symlink;
@@ -330,7 +316,6 @@ FBSD_1.1 {
 	fchmodat;
 	fchownat;
 	fexecve;
-	fstatat;
 	futimesat;
 	jail_get;
 	jail_set;
@@ -339,7 +324,6 @@ FBSD_1.1 {
 	lpathconf;
 	mkdirat;
 	mkfifoat;
-	mknodat;
 	msgctl;
 	readlinkat;
 	renameat;
@@ -401,6 +385,19 @@ FBSD_1.4 {
 FBSD_1.5 {
 	clock_nanosleep;
 	fdatasync;
+	fhstat;
+	fhstatfs;
+	fstat;
+	fstatat;
+	fstatfs;
+	getdents;
+	getdirentries;
+	getfsstat;
+	lstat;
+	mknod;
+	mknodat;
+	stat;
+	statfs;
 };
 
 FBSDprivate_1.0 {
@@ -606,8 +603,6 @@ FBSDprivate_1.0 {
 	__sys_getauid;
 	_getcontext;
 	__sys_getcontext;
-	_getdents;
-	__sys_getdents;
 	_getdirentries;
 	__sys_getdirentries;
 	_getdtablesize;
@@ -736,8 +731,6 @@ FBSDprivate_1.0 {
 	__sys_lio_listio;
 	_listen;
 	__sys_listen;
-	_lstat;
-	__sys_lstat;
 	_lutimes;
 	__sys_lutimes;
 	_mac_syscall;
@@ -796,14 +789,8 @@ FBSDprivate_1.0 {
 	__sys_netbsd_msync;
 	_nfssvc;
 	__sys_nfssvc;
-	_nfstat;
-	__sys_nfstat;
-	_nlstat;
-	__sys_nlstat;
 	_nmount;
 	__sys_nmount;
-	_nstat;
-	__sys_nstat;
 	_ntp_adjtime;
 	__sys_ntp_adjtime;
 	_ntp_gettime;
@@ -971,8 +958,6 @@ FBSDprivate_1.0 {
 	__sys_socket;
 	_socketpair;
 	__sys_socketpair;
-	_stat;
-	__sys_stat;
 	_statfs;
 	__sys_statfs;
 	_swapcontext;
diff --git a/lib/libc/sys/getdents.c b/lib/libc/sys/getdents.c
new file mode 100644
index 000000000000..c8a2878c972f
--- /dev/null
+++ b/lib/libc/sys/getdents.c
@@ -0,0 +1,41 @@
+/*-
+ * Copyright (c) 2012 Gleb Kurtsou <gleb@FreeBSD.org>
+ * 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.
+ *
+ * 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>
+__FBSDID("$FreeBSD$");
+
+#include "namespace.h"
+#include <sys/param.h>
+#include <sys/syscall.h>
+#include <dirent.h>
+#include "libc_private.h"
+
+ssize_t
+getdents(int fd, char *buf, size_t nbytes)
+{
+
+	return (__sys_getdirentries(fd, buf, nbytes, NULL));
+}
diff --git a/lib/libc/sys/getdirentries.2 b/lib/libc/sys/getdirentries.2
index ace8faa7521c..d3f2129d400f 100644
--- a/lib/libc/sys/getdirentries.2
+++ b/lib/libc/sys/getdirentries.2
@@ -40,10 +40,10 @@
 .Sh SYNOPSIS
 .In sys/types.h
 .In dirent.h
-.Ft int
-.Fn getdirentries "int fd" "char *buf" "int nbytes" "long *basep"
-.Ft int
-.Fn getdents "int fd" "char *buf" "int nbytes"
+.Ft ssize_t
+.Fn getdirentries "int fd" "char *buf" "size_t nbytes" "off_t *basep"
+.Ft ssize_t
+.Fn getdents "int fd" "char *buf" "size_t nbytes"
 .Sh DESCRIPTION
 The
 .Fn getdirentries
diff --git a/lib/libc/sys/lstat.c b/lib/libc/sys/lstat.c
new file mode 100644
index 000000000000..ccc73e3d3d06
--- /dev/null
+++ b/lib/libc/sys/lstat.c
@@ -0,0 +1,43 @@
+/*-
+ * Copyright (c) 2012 Gleb Kurtsou <gleb@FreeBSD.org>
+ * 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.
+ *
+ * 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>
+__FBSDID("$FreeBSD$");
+
+#include "namespace.h"
+#include <sys/param.h>
+#include <sys/fcntl.h>
+#include <sys/syscall.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "libc_private.h"
+
+int
+lstat(const char *path, struct stat *sb)
+{
+
+	return (__sys_fstatat(AT_FDCWD, path, sb, AT_SYMLINK_NOFOLLOW));
+}
diff --git a/lib/libc/sys/mknod.c b/lib/libc/sys/mknod.c
new file mode 100644
index 000000000000..3bb3853b5849
--- /dev/null
+++ b/lib/libc/sys/mknod.c
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 2011 Gleb Kurtsou <gleb@FreeBSD.org>
+ * 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.
+ *
+ * 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>
+__FBSDID("$FreeBSD$");
+
+#include "namespace.h"
+#include <sys/param.h>
+#include <sys/fcntl.h>
+#include <sys/syscall.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "libc_private.h"
+
+int __sys_mknodat(int, const char *, mode_t, dev_t);
+
+int
+mknod(const char *path, mode_t mode, dev_t dev)
+{
+
+	return (__sys_mknodat(AT_FDCWD, path, mode, dev));
+}
diff --git a/lib/libc/sys/stat.c b/lib/libc/sys/stat.c
new file mode 100644
index 000000000000..6b58daa9e515
--- /dev/null
+++ b/lib/libc/sys/stat.c
@@ -0,0 +1,43 @@
+/*-
+ * Copyright (c) 2012 Gleb Kurtsou <gleb@FreeBSD.org>
+ * 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.
+ *
+ * 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>
+__FBSDID("$FreeBSD$");
+
+#include "namespace.h"
+#include <sys/param.h>
+#include <sys/fcntl.h>
+#include <sys/syscall.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "libc_private.h"
+
+int
+stat(const char *path, struct stat *sb)
+{
+
+	return (__sys_fstatat(AT_FDCWD, path, sb, 0));
+}
diff --git a/lib/libc/sys/statfs.2 b/lib/libc/sys/statfs.2
index 7a95871125ca..a7383c4ce12b 100644
--- a/lib/libc/sys/statfs.2
+++ b/lib/libc/sys/statfs.2
@@ -28,7 +28,7 @@
 .\"	@(#)statfs.2	8.5 (Berkeley) 5/24/95
 .\" $FreeBSD$
 .\"
-.Dd November 1, 2006
+.Dd February 13, 2017
 .Dt STATFS 2
 .Os
 .Sh NAME
@@ -66,8 +66,8 @@ typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
  */
 
 #define	MFSNAMELEN	16		/* length of type name including null */
-#define	MNAMELEN	88		/* size of on/from name bufs */
-#define	STATFS_VERSION	0x20030518	/* current version number */
+#define	MNAMELEN	1024		/* size of on/from name bufs */
+#define	STATFS_VERSION	0x20140518	/* current version number */
 
 struct statfs {
 uint32_t f_version;		/* structure version number */