18 files changed, 644 insertions, 92 deletions

diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index 9b9f718dbe2f..a5e7e04597d0 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -37,6 +37,14 @@ SRCS+=	\
 
 SRCS+= getdents.c lstat.c mknod.c stat.c
 
+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+= pipe.c
 
 INTERPOSED = \
@@ -421,8 +429,7 @@ MLINKS+=open.2 openat.2
 MLINKS+=pathconf.2 fpathconf.2
 MLINKS+=pathconf.2 lpathconf.2
 MLINKS+=pdfork.2 pdgetpid.2\
-	pdfork.2 pdkill.2 \
-	pdfork.2 pdwait4.2
+	pdfork.2 pdkill.2
 MLINKS+=pipe.2 pipe2.2
 MLINKS+=poll.2 ppoll.2
 MLINKS+=rctl_add_rule.2 rctl_get_limits.2 \
diff --git a/lib/libc/sys/Symbol.map b/lib/libc/sys/Symbol.map
index feccda6f6bf4..4411cfe968cd 100644
--- a/lib/libc/sys/Symbol.map
+++ b/lib/libc/sys/Symbol.map
@@ -121,7 +121,6 @@ FBSD_1.0 {
 	jail;
 	jail_attach;
 	kenv;
-	kevent;
 	kill;
 	kldfind;
 	kldfirstmod;
@@ -393,6 +392,7 @@ FBSD_1.5 {
 	getdents;
 	getdirentries;
 	getfsstat;
+	kevent;
 	lstat;
 	mknod;
 	mknodat;
diff --git a/lib/libc/sys/compat-ino64.h b/lib/libc/sys/compat-ino64.h
new file mode 100644
index 000000000000..dde741e4f089
--- /dev/null
+++ b/lib/libc/sys/compat-ino64.h
@@ -0,0 +1,102 @@
+/*-
+ * Copyright (c) 2017 M. Warner Losh <imp@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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * 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
new file mode 100644
index 000000000000..a57a8aad52a2
--- /dev/null
+++ b/lib/libc/sys/fstat.c
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 2017 M. Warner Losh <imp@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 "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
new file mode 100644
index 000000000000..5e6edccdb97d
--- /dev/null
+++ b/lib/libc/sys/fstatat.c
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 2017 M. Warner Losh <imp@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 "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
new file mode 100644
index 000000000000..71ee12dc0bfb
--- /dev/null
+++ b/lib/libc/sys/fstatfs.c
@@ -0,0 +1,54 @@
+/*-
+ * Copyright (c) 2017 M. Warner Losh <imp@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 "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 c8a2878c972f..480fbf265fb9 100644
--- a/lib/libc/sys/getdents.c
+++ b/lib/libc/sys/getdents.c
@@ -36,6 +36,11 @@ __FBSDID("$FreeBSD$");
 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 (__sys_getdirentries(fd, buf, nbytes, NULL));
+	return (_getdirentries(fd, buf, nbytes, NULL));
 }
diff --git a/lib/libc/sys/getdirentries.c b/lib/libc/sys/getdirentries.c
new file mode 100644
index 000000000000..469e6d26d790
--- /dev/null
+++ b/lib/libc/sys/getdirentries.c
@@ -0,0 +1,117 @@
+/*-
+ * Copyright (c) 2017 M. Warner Losh <imp@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("$FreeBSD$");
+
+#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
new file mode 100644
index 000000000000..ca81f3e9fd52
--- /dev/null
+++ b/lib/libc/sys/getfsstat.c
@@ -0,0 +1,65 @@
+/*-
+ * Copyright (c) 2017 M. Warner Losh <imp@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 "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/kqueue.2 b/lib/libc/sys/kqueue.2
index e7bca7231690..6630ae3db688 100644
--- a/lib/libc/sys/kqueue.2
+++ b/lib/libc/sys/kqueue.2
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd April 18, 2017
+.Dd June 22, 2017
 .Dt KQUEUE 2
 .Os
 .Sh NAME
@@ -148,12 +148,13 @@ The
 structure is defined as:
 .Bd -literal
 struct kevent {
-	uintptr_t ident;	/* identifier for this event */
+	uintptr_t  ident;	/* identifier for this event */
 	short	  filter;	/* filter for event */
 	u_short	  flags;	/* action flags for kqueue */
 	u_int	  fflags;	/* filter flag value */
-	intptr_t  data;		/* filter data value */
+	int64_t   data;		/* filter data value */
 	void	  *udata;	/* opaque user data identifier */
+	uint64_t  ext[4];	/* extentions */
 };
 .Ed
 .Pp
@@ -177,6 +178,20 @@ Filter-specific flags.
 Filter-specific data value.
 .It Fa udata
 Opaque user-defined value passed through the kernel unchanged.
+.It Fa ext
+Extended data passed to and from kernel.
+The
+.Fa ext[0]
+and
+.Fa ext[1]
+members use is defined by the filter.
+If the filter does not use them, the members are copied unchanged.
+The
+.Fa ext[2]
+and
+.Fa ext[3]
+members are always passed throught the kernel as-is,
+making additional context available to application.
 .El
 .Pp
 The
@@ -336,33 +351,18 @@ case.
 Takes a descriptor as the identifier, and returns whenever
 there is no remaining data in the write buffer.
 .It Dv EVFILT_AIO
-The sigevent portion of the AIO request is filled in, with
-.Va sigev_notify_kqueue
-containing the descriptor of the kqueue that the event should
-be attached to,
-.Va sigev_notify_kevent_flags
-containing the kevent flags which should be
-.Dv EV_ONESHOT ,
-.Dv EV_CLEAR
-or
-.Dv EV_DISPATCH ,
-.Va sigev_value
-containing the udata value, and
-.Va sigev_notify
-set to
-.Dv SIGEV_KEVENT .
-When the
-.Fn aio_*
-system call is made, the event will be registered
-with the specified kqueue, and the
-.Va ident
-argument set to the
-.Fa struct aiocb
-returned by the
-.Fn aio_*
-system call.
+Events for this filter are not registered with
+.Fn kevent
+directly but are registered via the
+.Va aio_sigevent
+member of an asychronous I/O request when it is scheduled via an asychronous I/O
+system call such as
+.Fn aio_read .
 The filter returns under the same conditions as
 .Fn aio_error .
+For more details on this filter see
+.Xr sigevent 3 and
+.Xr aio 4 .
 .It Dv EVFILT_VNODE
 Takes a file descriptor as the identifier and the events to watch for in
 .Va fflags ,
@@ -515,16 +515,26 @@ Establishes an arbitrary timer identified by
 .Va ident .
 When adding a timer,
 .Va data
-specifies the timeout period.
+specifies the moment to fire the timer (for
+.Dv NOTE_ABSTIME )
+or the timeout period.
 The timer will be periodic unless
 .Dv EV_ONESHOT
+or
+.Dv NOTE_ABSTIME
 is specified.
 On return,
 .Va data
 contains the number of times the timeout has expired since the last call to
 .Fn kevent .
-This filter automatically sets the EV_CLEAR flag internally.
-.Bl -tag -width "Dv NOTE_USECONDS"
+For non-monotonic timers, this filter automatically sets the
+.Dv EV_CLEAR
+flag internally.
+.Pp
+The filter accepts the following flags in the
+.Va fflags
+argument:
+.Bl -tag -width "Dv NOTE_MSECONDS"
 .It Dv NOTE_SECONDS
 .Va data
 is in seconds.
@@ -537,6 +547,8 @@ is in microseconds.
 .It Dv NOTE_NSECONDS
 .Va data
 is in nanoseconds.
+.It Dv NOTE_ABSTIME
+The specified expiration time is absolute.
 .El
 .Pp
 If
diff --git a/lib/libc/sys/lstat.c b/lib/libc/sys/lstat.c
index ccc73e3d3d06..d639a42d3dd0 100644
--- a/lib/libc/sys/lstat.c
+++ b/lib/libc/sys/lstat.c
@@ -1,4 +1,5 @@
 /*-
+ * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
  * Copyright (c) 2012 Gleb Kurtsou <gleb@FreeBSD.org>
  * All rights reserved.
  *
@@ -29,15 +30,22 @@ __FBSDID("$FreeBSD$");
 
 #include "namespace.h"
 #include <sys/param.h>
-#include <sys/fcntl.h>
 #include <sys/syscall.h>
-#include <sys/stat.h>
+#include "compat-ino64.h"
 #include <unistd.h>
+
 #include "libc_private.h"
 
 int
 lstat(const char *path, struct stat *sb)
 {
+	struct freebsd11_stat stat11;
+	int rv;
 
-	return (__sys_fstatat(AT_FDCWD, path, sb, AT_SYMLINK_NOFOLLOW));
+	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);
 }
diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2
index e36f804c587b..b7704a2351c0 100644
--- a/lib/libc/sys/mmap.2
+++ b/lib/libc/sys/mmap.2
@@ -28,7 +28,7 @@
 .\"	@(#)mmap.2	8.4 (Berkeley) 5/11/95
 .\" $FreeBSD$
 .\"
-.Dd February 4, 2017
+.Dd June 22, 2017
 .Dt MMAP 2
 .Os
 .Sh NAME
@@ -69,7 +69,7 @@ current) offsets in the object.
 In particular, the
 .Fa offset
 value cannot be negative.
-If the object is truncated and the process later accesses a pages that
+If the object is truncated and the process later accesses a page that
 is wholly within the truncated region, the access is aborted and a
 .Dv SIGBUS
 signal is delivered to the process.
@@ -199,9 +199,21 @@ In contrast, if
 .Dv MAP_EXCL
 is specified, the request will fail if a mapping
 already exists within the range.
-.It Dv MAP_HASSEMAPHORE
-Notify the kernel that the region may contain semaphores and that special
-handling may be necessary.
+.It Dv MAP_GUARD
+Instead of a mapping, create a guard of the specified size.
+Guards allow a process to create reservations in its address space,
+which can later be replaced by actual mappings.
+.Pp
+.Fa mmap
+will not create mappings in the address range of a guard unless
+the request specifies
+.Dv MAP_FIXED .
+Guards can be destroyed with
+.Xr munmap 2 .
+Any memory access by a thread to the guarded range results
+in the delivery of a
+.Dv SIGSEGV
+signal to that thread.
 .It Dv MAP_NOCORE
 Region is not included in a core file.
 .It Dv MAP_NOSYNC
@@ -306,6 +318,7 @@ must include at least
 .Dv PROT_READ
 and
 .Dv PROT_WRITE .
+.Pp
 This option creates
 a memory region that grows to at most
 .Fa len
@@ -316,6 +329,10 @@ stack top is the starting address returned by the call, plus
 bytes.
 The bottom of the stack at maximum growth is the starting
 address returned by the call.
+The system uses guards to prevent the inadvertent use of
+regions into which stacks created with
+.Dv MAP_STACK
+will automatically grow, without mapping the whole stack in advance.
 .El
 .Pp
 The
@@ -409,6 +426,7 @@ were specified.
 .It Bq Er EINVAL
 None of
 .Dv MAP_ANON ,
+.Dv MAP_GUARD ,
 .Dv MAP_PRIVATE ,
 .Dv MAP_SHARED ,
 or
@@ -458,6 +476,25 @@ were specified, but the requested region is already used by a mapping.
 was specified, but
 .Dv MAP_FIXED
 was not.
+.It Bq Er EINVAL
+.Dv MAP_GUARD
+was specified, but the
+.Fa offset
+argument was not zero, the
+.Fa fd
+argument was not -1, or the
+.Fa prot
+argument was not
+.Dv PROT_NONE .
+.It Bq Er EINVAL
+.Dv MAP_GUARD
+was specified together with one of the flags
+.Dv MAP_ANON ,
+.Dv MAP_PREFAULT ,
+.Dv MAP_PREFAULT_READ ,
+.Dv MAP_PRIVATE ,
+.Dv MAP_SHARED ,
+.Dv MAP_STACK .
 .It Bq Er ENODEV
 .Dv MAP_ANON
 has not been specified and
diff --git a/lib/libc/sys/munmap.2 b/lib/libc/sys/munmap.2
index 8fa539550fbe..d050db0f3fac 100644
--- a/lib/libc/sys/munmap.2
+++ b/lib/libc/sys/munmap.2
@@ -28,7 +28,7 @@
 .\"	@(#)munmap.2	8.3 (Berkeley) 5/27/94
 .\" $FreeBSD$
 .\"
-.Dd May 27, 1994
+.Dd June 22, 2017
 .Dt MUNMAP 2
 .Os
 .Sh NAME
@@ -44,7 +44,7 @@
 The
 .Fn munmap
 system call
-deletes the mappings for the specified address range,
+deletes the mappings and guards for the specified address range,
 and causes further references to addresses within the range
 to generate invalid memory references.
 .Sh RETURN VALUES
diff --git a/lib/libc/sys/pdfork.2 b/lib/libc/sys/pdfork.2
index 5f1a86e3b961..ab1a73dc9ce1 100644
--- a/lib/libc/sys/pdfork.2
+++ b/lib/libc/sys/pdfork.2
@@ -32,14 +32,13 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd June 8, 2016
+.Dd June 17, 2017
 .Dt PDFORK 2
 .Os
 .Sh NAME
 .Nm pdfork ,
 .Nm pdgetpid ,
-.Nm pdkill ,
-.Nm pdwait4
+.Nm pdkill
 .Nd System calls to manage process descriptors
 .Sh LIBRARY
 .Lb libc
@@ -51,8 +50,6 @@
 .Fn pdgetpid "int fd" "pid_t *pidp"
 .Ft int
 .Fn pdkill "int fd" "int signum"
-.Ft int
-.Fn pdwait4 "int fd" "int *status" "int options" "struct rusage *rusage"
 .Sh DESCRIPTION
 Process descriptors are special file descriptors that represent processes,
 and are created using
@@ -96,11 +93,6 @@ except that it accepts a process descriptor,
 .Fa fd ,
 rather than a PID.
 .Pp
-.Fn pdwait4
-behaves identically to
-.Xr wait4 2 ,
-but operates with respect to a process descriptor argument rather than a PID.
-.Pp
 The following system calls also have effects specific to process descriptors:
 .Pp
 .Xr fstat 2
@@ -146,9 +138,6 @@ does.
 and
 .Fn pdkill
 return 0 on success and -1 on failure.
-.Pp
-.Fn pdwait4
-returns a PID on success and -1 on failure.
 .Sh ERRORS
 These functions may return the same error numbers as their PID-based equivalents
 (e.g.
@@ -180,9 +169,8 @@ for
 The
 .Fn pdfork ,
 .Fn pdgetpid ,
-.Fn pdkill
 and
-.Fn pdwait4
+.Fn pdkill
 system calls first appeared in
 .Fx 9.0 .
 .Pp
@@ -197,6 +185,3 @@ and
 .An Jonathan Anderson Aq Mt jonathan@FreeBSD.org
 at the University of Cambridge Computer Laboratory with support from a grant
 from Google, Inc.
-.Sh BUGS
-.Fn pdwait4
-has not yet been implemented.
diff --git a/lib/libc/sys/stat.2 b/lib/libc/sys/stat.2
index e706a408275d..8256ebc23cd0 100644
--- a/lib/libc/sys/stat.2
+++ b/lib/libc/sys/stat.2
@@ -28,7 +28,7 @@
 .\"     @(#)stat.2	8.4 (Berkeley) 5/1/95
 .\" $FreeBSD$
 .\"
-.Dd January 14, 2016
+.Dd June 23, 2017
 .Dt STAT 2
 .Os
 .Sh NAME
@@ -62,7 +62,7 @@ The
 .Fn lstat
 system call is like
 .Fn stat
-except in the case where the named file is a symbolic link,
+except when the named file is a symbolic link,
 in which case
 .Fn lstat
 returns information about the link,
@@ -82,7 +82,7 @@ system call is equivalent to
 .Fn stat
 and
 .Fn lstat
-except in the case where the
+except when the
 .Fa path
 specifies a relative path.
 In this case the status is retrieved from a file relative to
@@ -92,7 +92,7 @@ instead of the current working directory.
 .Pp
 The values for the
 .Fa flag
-are constructed by a bitwise-inclusive OR of flags from the following list,
+are constructed by a bitwise-inclusive OR of flags from this list,
 defined in
 .In fcntl.h :
 .Bl -tag -width indent
@@ -129,16 +129,16 @@ and into which information is placed concerning the file.
 .Pp
 The fields of
 .Vt "struct stat"
-related to the file system are as follows:
+related to the file system are:
 .Bl -tag -width ".Va st_nlink"
 .It Va st_dev
-The numeric ID of the device containing the file.
+Numeric ID of the device containing the file.
 .It Va st_ino
 The file's inode number.
 .It Va st_nlink
-The number of hard links to the file.
+Number of hard links to the file.
 .It Va st_flags
-The flags enabled for the file.
+Flags enabled for the file.
 See
 .Xr chflags 2
 for the list of flags and their description.
@@ -152,10 +152,10 @@ fields together identify the file uniquely within the system.
 .Pp
 The time-related fields of
 .Vt "struct stat"
-are as follows:
+are:
 .Bl -tag -width ".Va st_birthtim"
 .It Va st_atim
-Time when file data last accessed.
+Time when file data was last accessed.
 Changed by the
 .Xr mknod 2 ,
 .Xr utimes 2 ,
@@ -164,7 +164,7 @@ and
 .Xr readv 2
 system calls.
 .It Va st_mtim
-Time when file data last modified.
+Time when file data was last modified.
 Changed by the
 .Xr mkdir 2 ,
 .Xr mkfifo 2 ,
@@ -199,7 +199,7 @@ system calls.
 Time when the inode was created.
 .El
 .Pp
-The following time-related macros are defined for compatibility:
+These time-related macros are defined for compatibility:
 .Bd -literal
 #define	st_atime		st_atim.tv_sec
 #define	st_mtime		st_mtim.tv_sec
@@ -216,35 +216,35 @@ The following time-related macros are defined for compatibility:
 #endif
 .Ed
 .Pp
-The size-related fields of the
+Size-related fields of the
 .Vt "struct stat"
-are as follows:
+are:
 .Bl -tag -width ".Va st_blksize"
 .It Va st_size
-The file size in bytes.
+File size in bytes.
 .It Va st_blksize
-The optimal I/O block size for the file.
+Optimal I/O block size for the file.
 .It Va st_blocks
-The actual number of blocks allocated for the file in 512-byte units.
+Actual number of blocks allocated for the file in 512-byte units.
 As short symbolic links are stored in the inode, this number may
 be zero.
 .El
 .Pp
 The access-related fields of
 .Vt "struct stat"
-are as follows:
+are:
 .Bl -tag -width ".Va st_mode"
 .It Va st_uid
-The user ID of the file's owner.
+User ID of the file's owner.
 .It Va st_gid
-The group ID of the file.
+Group ID of the file.
 .It Va st_mode
 Status of the file (see below).
 .El
 .Pp
 The status information word
 .Fa st_mode
-has the following bits:
+has these bits:
 .Bd -literal
 #define S_IFMT   0170000  /* type of file mask */
 #define S_IFIFO  0010000  /* named pipe (fifo) */
@@ -277,7 +277,7 @@ For a list of access modes, see
 .Xr access 2
 and
 .Xr chmod 2 .
-The following macros are available to test whether a
+These macros are available to test whether a
 .Va st_mode
 value passed in the
 .Fa m
diff --git a/lib/libc/sys/stat.c b/lib/libc/sys/stat.c
index 6b58daa9e515..a7ed7baf5c2f 100644
--- a/lib/libc/sys/stat.c
+++ b/lib/libc/sys/stat.c
@@ -1,4 +1,5 @@
 /*-
+ * Copyright (c) 2017 M. Warner Losh <imp@FreeBSD.org>
  * Copyright (c) 2012 Gleb Kurtsou <gleb@FreeBSD.org>
  * All rights reserved.
  *
@@ -29,15 +30,22 @@ __FBSDID("$FreeBSD$");
 
 #include "namespace.h"
 #include <sys/param.h>
-#include <sys/fcntl.h>
 #include <sys/syscall.h>
-#include <sys/stat.h>
+#include "compat-ino64.h"
 #include <unistd.h>
+
 #include "libc_private.h"
 
 int
 stat(const char *path, struct stat *sb)
 {
+	struct freebsd11_stat stat11;
+	int rv;
 
-	return (__sys_fstatat(AT_FDCWD, path, sb, 0));
+	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);
 }
diff --git a/lib/libc/sys/statfs.c b/lib/libc/sys/statfs.c
new file mode 100644
index 000000000000..63774e999d92
--- /dev/null
+++ b/lib/libc/sys/statfs.c
@@ -0,0 +1,50 @@
+/*-
+ * Copyright (c) 2017 M. Warner Losh <imp@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 "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/lib/libc/sys/wait.2 b/lib/libc/sys/wait.2
index c34743290451..49cbc269d326 100644
--- a/lib/libc/sys/wait.2
+++ b/lib/libc/sys/wait.2
@@ -28,7 +28,7 @@
 .\"     @(#)wait.2	8.2 (Berkeley) 4/19/94
 .\" $FreeBSD$
 .\"
-.Dd June 1, 2016
+.Dd June 17, 2017
 .Dt WAIT 2
 .Os
 .Sh NAME
@@ -601,9 +601,7 @@ must be checked against zero to determine if a process reported status.
 called with -1 to wait for any child process will ignore a child that is
 referenced by a process descriptor (see
 .Xr pdfork 2 ) .
-Specific processes can still be waited on by specifying the process ID
-or descriptor (see
-.Xr pdwait 4 ) .
+Specific processes can still be waited on by specifying the process ID.
 .Sh ERRORS
 The
 .Fn wait