18 files changed, 1276 insertions, 0 deletions

diff --git a/lib/libspl/Makefile.am b/lib/libspl/Makefile.am
index 3101b5fc5..77d8aba0e 100644
--- a/lib/libspl/Makefile.am
+++ b/lib/libspl/Makefile.am
@@ -42,6 +42,15 @@ USER_C += \
 	os/linux/getmntany.c
 endif
 
+if BUILD_FREEBSD
+USER_C += \
+	os/freebsd/getexecname.c \
+	os/freebsd/gethostid.c \
+	os/freebsd/getmntany.c \
+	os/freebsd/mnttab.c
+
+endif
+
 USER_ASM = atomic.S
 
 nodist_libspl_la_SOURCES = \
diff --git a/lib/libspl/include/os/Makefile.am b/lib/libspl/include/os/Makefile.am
index 09c0beec4..7b362e02a 100644
--- a/lib/libspl/include/os/Makefile.am
+++ b/lib/libspl/include/os/Makefile.am
@@ -1,3 +1,7 @@
+if BUILD_FREEBSD
+SUBDIRS = freebsd
+endif
+
 if BUILD_LINUX
 SUBDIRS = linux
 endif
diff --git a/lib/libspl/include/os/freebsd/Makefile.am b/lib/libspl/include/os/freebsd/Makefile.am
new file mode 100644
index 000000000..081839c48
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/Makefile.am
@@ -0,0 +1 @@
+SUBDIRS = sys
diff --git a/lib/libspl/include/os/freebsd/sys/Makefile.am b/lib/libspl/include/os/freebsd/sys/Makefile.am
new file mode 100644
index 000000000..896c93871
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/Makefile.am
@@ -0,0 +1,12 @@
+libspldir = $(includedir)/libspl/sys
+libspl_HEADERS = \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/byteorder.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/file.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/mnttab.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/mount.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/param.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/stat.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/sysmacros.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/uio.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/vfs.h \
+	$(top_srcdir)/lib/libspl/include/os/freebsd/sys/zfs_context_os.h
diff --git a/lib/libspl/include/os/freebsd/sys/byteorder.h b/lib/libspl/include/os/freebsd/sys/byteorder.h
new file mode 100644
index 000000000..74649cc4e
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/byteorder.h
@@ -0,0 +1,311 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+/*
+ * University Copyright- Copyright (c) 1982, 1986, 1988
+ * The Regents of the University of California
+ * All Rights Reserved
+ *
+ * University Acknowledgment- Portions of this document are derived from
+ * software developed by the University of California, Berkeley, and its
+ * contributors.
+ */
+
+#ifndef _SYS_BYTEORDER_H
+#define	_SYS_BYTEORDER_H
+
+/*
+ * XXX FIXME
+ * on FreeBSD _BIG_ENDIAN is defined on all architectures so we have
+ * to exclude _MACHINE_ENDIAN_H_ and define the bulk of it here
+ */
+
+#include <sys/cdefs.h>
+#include <sys/_types.h>
+
+/*
+ * Define the order of 32-bit words in 64-bit words.
+ */
+#define	_QUAD_HIGHWORD 1
+#define	_QUAD_LOWWORD 0
+
+/*
+ * Definitions for byte order, according to byte significance from low
+ * address to high.
+ */
+#undef _LITTLE_ENDIAN
+/* LSB first: i386, vax */
+#define	_LITTLE_ENDIAN	1234
+/* LSB first in word, MSW first in long */
+#define	_PDP_ENDIAN		3412
+
+#define	_BYTE_ORDER		_LITTLE_ENDIAN
+
+/*
+ * Deprecated variants that don't have enough underscores to be useful in more
+ * strict namespaces.
+ */
+#if __BSD_VISIBLE
+#define	LITTLE_ENDIAN	_LITTLE_ENDIAN
+#define	PDP_ENDIAN		_PDP_ENDIAN
+#define	BYTE_ORDER		_BYTE_ORDER
+#endif
+
+#define	__bswap16_gen(x)	(__uint16_t)((x) << 8 | (x) >> 8)
+#define	__bswap32_gen(x)                \
+	(((__uint32_t)__bswap16((x) & 0xffff) << 16) | __bswap16((x) >> 16))
+#define	__bswap64_gen(x)                \
+	(((__uint64_t)__bswap32((x) & 0xffffffff) << 32) | __bswap32((x) >> 32))
+
+#ifdef __GNUCLIKE_BUILTIN_CONSTANT_P
+#define	__bswap16(x)                            \
+	((__uint16_t)(__builtin_constant_p(x) ? \
+	__bswap16_gen((__uint16_t)(x)) : __bswap16_var(x)))
+#define	__bswap32(x)                    \
+	(__builtin_constant_p(x) ?      \
+	__bswap32_gen((__uint32_t)(x)) : __bswap32_var(x))
+#define	__bswap64(x)                    \
+	(__builtin_constant_p(x) ?      \
+	__bswap64_gen((__uint64_t)(x)) : __bswap64_var(x))
+#else
+/* XXX these are broken for use in static initializers. */
+#define	__bswap16(x)    __bswap16_var(x)
+#define	__bswap32(x)    __bswap32_var(x)
+#define	__bswap64(x)    __bswap64_var(x)
+#endif
+
+/* These are defined as functions to avoid multiple evaluation of x. */
+
+static __inline __uint16_t
+__bswap16_var(__uint16_t _x)
+{
+
+	return (__bswap16_gen(_x));
+}
+
+static __inline __uint32_t
+__bswap32_var(__uint32_t _x)
+{
+
+#ifdef __GNUCLIKE_ASM
+	__asm("bswap %0" : "+r" (_x));
+	return (_x);
+#else
+	return (__bswap32_gen(_x));
+#endif
+}
+#define	__htonl(x)	__bswap32(x)
+#define	__htons(x)	__bswap16(x)
+#define	__ntohl(x)	__bswap32(x)
+#define	__ntohs(x)	__bswap16(x)
+
+#include <sys/isa_defs.h>
+#include <sys/int_types.h>
+
+#if defined(__GNUC__) && defined(_ASM_INLINES) && \
+	(defined(__i386) || defined(__amd64))
+#include <asm/byteorder.h>
+#endif
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+/*
+ * macros for conversion between host and (internet) network byte order
+ */
+
+#if defined(_BIG_ENDIAN) && !defined(ntohl) && !defined(__lint)
+/* big-endian */
+#if defined(_BIG_ENDIAN) && (defined(__amd64__) || defined(__amd64))
+#error "incompatible ENDIAN / ARCH combination"
+#endif
+#define	ntohl(x)	(x)
+#define	ntohs(x)	(x)
+#define	htonl(x)	(x)
+#define	htons(x)	(x)
+
+#elif !defined(ntohl) /* little-endian */
+
+#ifndef	_IN_PORT_T
+#define	_IN_PORT_T
+typedef uint16_t in_port_t;
+#endif
+
+#ifndef	_IN_ADDR_T
+#define	_IN_ADDR_T
+typedef uint32_t in_addr_t;
+#endif
+
+#if !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5)
+extern	uint32_t htonl(uint32_t);
+extern	uint16_t htons(uint16_t);
+extern 	uint32_t ntohl(uint32_t);
+extern	uint16_t ntohs(uint16_t);
+#else
+extern	in_addr_t htonl(in_addr_t);
+extern	in_port_t htons(in_port_t);
+extern 	in_addr_t ntohl(in_addr_t);
+extern	in_port_t ntohs(in_port_t);
+#endif	/* !defined(_XPG4_2) || defined(__EXTENSIONS__) || defined(_XPG5) */
+#endif
+
+#if !defined(_XPG4_2) || defined(__EXTENSIONS__)
+
+/*
+ * Macros to reverse byte order
+ */
+#define	BSWAP_8(x)	((x) & 0xff)
+#define	BSWAP_16(x)	((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
+#define	BSWAP_32(x)	((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
+#define	BSWAP_64(x)	((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
+
+#define	BMASK_8(x)	((x) & 0xff)
+#define	BMASK_16(x)	((x) & 0xffff)
+#define	BMASK_32(x)	((x) & 0xffffffff)
+#define	BMASK_64(x)	(x)
+
+/*
+ * Macros to convert from a specific byte order to/from native byte order
+ */
+#ifdef _BIG_ENDIAN
+#define	BE_8(x)		BMASK_8(x)
+#define	BE_16(x)	BMASK_16(x)
+#define	BE_32(x)	BMASK_32(x)
+#define	BE_64(x)	BMASK_64(x)
+#define	LE_8(x)		BSWAP_8(x)
+#define	LE_16(x)	BSWAP_16(x)
+#define	LE_32(x)	BSWAP_32(x)
+#define	LE_64(x)	BSWAP_64(x)
+#else
+#define	LE_8(x)		BMASK_8(x)
+#define	LE_16(x)	BMASK_16(x)
+#define	LE_32(x)	BMASK_32(x)
+#define	LE_64(x)	BMASK_64(x)
+#define	BE_8(x)		BSWAP_8(x)
+#define	BE_16(x)	BSWAP_16(x)
+#define	BE_32(x)	BSWAP_32(x)
+#define	BE_64(x)	BSWAP_64(x)
+#endif
+
+#ifdef _BIG_ENDIAN
+static __inline__ uint64_t
+htonll(uint64_t n)
+{
+	return (n);
+}
+
+static __inline__ uint64_t
+ntohll(uint64_t n)
+{
+	return (n);
+}
+#else
+static __inline__ uint64_t
+htonll(uint64_t n)
+{
+	return ((((uint64_t)htonl(n)) << 32) + htonl(n >> 32));
+}
+
+static __inline__ uint64_t
+ntohll(uint64_t n)
+{
+	return ((((uint64_t)ntohl(n)) << 32) + ntohl(n >> 32));
+}
+#endif
+
+/*
+ * Macros to read unaligned values from a specific byte order to
+ * native byte order
+ */
+
+#define	BE_IN8(xa) \
+	*((uint8_t *)(xa))
+
+#define	BE_IN16(xa) \
+	(((uint16_t)BE_IN8(xa) << 8) | BE_IN8((uint8_t *)(xa)+1))
+
+#define	BE_IN32(xa) \
+	(((uint32_t)BE_IN16(xa) << 16) | BE_IN16((uint8_t *)(xa)+2))
+
+#define	BE_IN64(xa) \
+	(((uint64_t)BE_IN32(xa) << 32) | BE_IN32((uint8_t *)(xa)+4))
+
+#define	LE_IN8(xa) \
+	*((uint8_t *)(xa))
+
+#define	LE_IN16(xa) \
+	(((uint16_t)LE_IN8((uint8_t *)(xa) + 1) << 8) | LE_IN8(xa))
+
+#define	LE_IN32(xa) \
+	(((uint32_t)LE_IN16((uint8_t *)(xa) + 2) << 16) | LE_IN16(xa))
+
+#define	LE_IN64(xa) \
+	(((uint64_t)LE_IN32((uint8_t *)(xa) + 4) << 32) | LE_IN32(xa))
+
+/*
+ * Macros to write unaligned values from native byte order to a specific byte
+ * order.
+ */
+
+#define	BE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
+
+#define	BE_OUT16(xa, yv) \
+	BE_OUT8((uint8_t *)(xa) + 1, yv); \
+	BE_OUT8((uint8_t *)(xa), (yv) >> 8);
+
+#define	BE_OUT32(xa, yv) \
+	BE_OUT16((uint8_t *)(xa) + 2, yv); \
+	BE_OUT16((uint8_t *)(xa), (yv) >> 16);
+
+#define	BE_OUT64(xa, yv) \
+	BE_OUT32((uint8_t *)(xa) + 4, yv); \
+	BE_OUT32((uint8_t *)(xa), (yv) >> 32);
+
+#define	LE_OUT8(xa, yv) *((uint8_t *)(xa)) = (uint8_t)(yv);
+
+#define	LE_OUT16(xa, yv) \
+	LE_OUT8((uint8_t *)(xa), yv); \
+	LE_OUT8((uint8_t *)(xa) + 1, (yv) >> 8);
+
+#define	LE_OUT32(xa, yv) \
+	LE_OUT16((uint8_t *)(xa), yv); \
+	LE_OUT16((uint8_t *)(xa) + 2, (yv) >> 16);
+
+#define	LE_OUT64(xa, yv) \
+	LE_OUT32((uint8_t *)(xa), yv); \
+	LE_OUT32((uint8_t *)(xa) + 4, (yv) >> 32);
+
+#endif	/* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* _SYS_BYTEORDER_H */
diff --git a/lib/libspl/include/os/freebsd/sys/file.h b/lib/libspl/include/os/freebsd/sys/file.h
new file mode 100644
index 000000000..27fd2888f
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/file.h
@@ -0,0 +1,42 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _LIBSPL_SYS_FILE_H
+#define	_LIBSPL_SYS_FILE_H
+
+#include_next <sys/file.h>
+
+#define	FCREAT	O_CREAT
+#define	FTRUNC	O_TRUNC
+#define	FSYNC	O_SYNC
+#define	FDSYNC	O_DSYNC
+#define	FEXCL	O_EXCL
+
+#define	FNODSYNC	0x10000	/* fsync pseudo flag */
+#define	FNOFOLLOW	0x20000	/* don't follow symlinks */
+#define	FIGNORECASE	0x80000	/* request case-insensitive lookups */
+
+#endif
diff --git a/lib/libspl/include/os/freebsd/sys/mnttab.h b/lib/libspl/include/os/freebsd/sys/mnttab.h
new file mode 100644
index 000000000..eb6ea2433
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/mnttab.h
@@ -0,0 +1,85 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
+/*  All Rights Reserved  */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+/* Copyright 2006 Ricardo Correia */
+
+#ifndef _SYS_MNTTAB_H
+#define	_SYS_MNTTAB_H
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#ifdef MNTTAB
+#undef MNTTAB
+#endif /* MNTTAB */
+
+#include <paths.h>
+#include <sys/mount.h>
+#define	MNTTAB		_PATH_DEVZERO
+#define	MS_NOMNTTAB		0x0
+#define	MS_RDONLY		0x1
+#define	umount2(p, f)	unmount(p, f)
+#define	MNT_LINE_MAX	4096
+
+#define	MNT_TOOLONG	1	/* entry exceeds MNT_LINE_MAX */
+#define	MNT_TOOMANY	2	/* too many fields in line */
+#define	MNT_TOOFEW	3	/* too few fields in line */
+
+struct mnttab {
+	char *mnt_special;
+	char *mnt_mountp;
+	char *mnt_fstype;
+	char *mnt_mntopts;
+};
+
+/*
+ * NOTE: fields in extmnttab should match struct mnttab till new fields
+ * are encountered, this allows hasmntopt to work properly when its arg is
+ * a pointer to an extmnttab struct cast to a mnttab struct pointer.
+ */
+
+struct extmnttab {
+	char *mnt_special;
+	char *mnt_mountp;
+	char *mnt_fstype;
+	char *mnt_mntopts;
+	uint_t mnt_major;
+	uint_t mnt_minor;
+};
+
+struct stat64;
+struct statfs;
+
+extern int getmntany(FILE *fp, struct mnttab *mp, struct mnttab *mpref);
+extern int _sol_getmntent(FILE *fp, struct mnttab *mp);
+extern int getextmntent(const char *path, struct extmnttab *entry,
+    struct stat64 *statbuf);
+extern void statfs2mnttab(struct statfs *sfs, struct mnttab *mp);
+char *hasmntopt(struct mnttab *mnt, char *opt);
+int getmntent(FILE *fp, struct mnttab *mp);
+
+#endif
diff --git a/lib/libspl/include/os/freebsd/sys/mount.h b/lib/libspl/include/os/freebsd/sys/mount.h
new file mode 100644
index 000000000..b40239100
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/mount.h
@@ -0,0 +1,108 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+
+#ifndef _LIBSPL_SYS_MOUNT_H
+#define	_LIBSPL_SYS_MOUNT_H
+
+#undef _SYS_MOUNT_H_
+#include_next <sys/mount.h>
+
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+
+/*
+ * Some old glibc headers don't define BLKGETSIZE64
+ * and we don't want to require the kernel headers
+ */
+#if !defined(BLKGETSIZE64)
+#define	BLKGETSIZE64		_IOR(0x12, 114, size_t)
+#endif
+
+/*
+ * Some old glibc headers don't correctly define MS_DIRSYNC and
+ * instead use the enum name S_WRITE.  When using these older
+ * headers define MS_DIRSYNC to be S_WRITE.
+ */
+#if !defined(MS_DIRSYNC)
+#define	MS_DIRSYNC		S_WRITE
+#endif
+
+/*
+ * Some old glibc headers don't correctly define MS_POSIXACL and
+ * instead leave it undefined.  When using these older headers define
+ * MS_POSIXACL to the reserved value of (1<<16).
+ */
+#if !defined(MS_POSIXACL)
+#define	MS_POSIXACL		(1<<16)
+#endif
+
+#define	MS_NOSUID	MNT_NOSUID
+#define	MS_NOEXEC	MNT_NOEXEC
+#define	MS_NODEV	0
+#define	S_WRITE		0
+#define	MS_BIND		0
+#define	MS_REMOUNT	0
+#define	MS_SYNCHRONOUS	MNT_SYNCHRONOUS
+
+#define	MS_USERS	(MS_NOEXEC|MS_NOSUID|MS_NODEV)
+#define	MS_OWNER	(MS_NOSUID|MS_NODEV)
+#define	MS_GROUP	(MS_NOSUID|MS_NODEV)
+#define	MS_COMMENT	0
+
+/*
+ * Older glibc <sys/mount.h> headers did not define all the available
+ * umount2(2) flags.  Both MNT_FORCE and MNT_DETACH are supported in the
+ * kernel back to 2.4.11 so we define them correctly if they are missing.
+ */
+#ifdef MNT_FORCE
+#define	MS_FORCE	MNT_FORCE
+#else
+#define	MS_FORCE	0x00000001
+#endif /* MNT_FORCE */
+
+#ifdef MNT_DETACH
+#define	MS_DETACH	MNT_DETACH
+#else
+#define	MS_DETACH	0x00000002
+#endif /* MNT_DETACH */
+
+/*
+ * Overlay mount is default in Linux, but for solaris/zfs
+ * compatibility, MS_OVERLAY is defined to explicitly have the user
+ * provide a flag (-O) to mount over a non empty directory.
+ */
+#define	MS_OVERLAY	0x00000004
+
+/*
+ * MS_CRYPT indicates that encryption keys should be loaded if they are not
+ * already available. This is not defined in glibc, but it is never seen by
+ * the kernel so it will not cause any problems.
+ */
+#define	MS_CRYPT	0x00000008
+
+#endif /* _LIBSPL_SYS_MOUNT_H */
diff --git a/lib/libspl/include/os/freebsd/sys/param.h b/lib/libspl/include/os/freebsd/sys/param.h
new file mode 100644
index 000000000..c0ad8d679
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/param.h
@@ -0,0 +1,70 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _LIBSPL_SYS_PARAM_H
+#define	_LIBSPL_SYS_PARAM_H
+
+#include_next <sys/param.h>
+#include <unistd.h>
+
+/*
+ * File system parameters and macros.
+ *
+ * The file system is made out of blocks of at most MAXBSIZE units,
+ * with smaller units (fragments) only in the last direct block.
+ * MAXBSIZE primarily determines the size of buffers in the buffer
+ * pool. It may be made larger without any effect on existing
+ * file systems; however making it smaller may make some file
+ * systems unmountable.
+ *
+ * Note that the blocked devices are assumed to have DEV_BSIZE
+ * "sectors" and that fragments must be some multiple of this size.
+ */
+#define	MAXNAMELEN	256
+
+#define	UID_NOBODY	60001		/* user ID no body */
+#define	GID_NOBODY	UID_NOBODY
+#define	UID_NOACCESS	60002		/* user ID no access */
+
+#define	MAXUID		UINT32_MAX	/* max user id */
+#define	MAXPROJID	MAXUID		/* max project id */
+
+#ifdef	PAGESIZE
+#undef	PAGESIZE
+#endif /* PAGESIZE */
+
+extern size_t spl_pagesize(void);
+#define	PAGESIZE	(spl_pagesize())
+
+extern int execvpe(const char *name, char * const argv[], char * const envp[]);
+
+struct zfs_handle;
+/*
+ * Attach/detach the given filesystem to/from the given jail.
+ */
+extern int zfs_jail(struct zfs_handle *zhp, int jailid, int attach);
+
+#endif
diff --git a/lib/libspl/include/os/freebsd/sys/stat.h b/lib/libspl/include/os/freebsd/sys/stat.h
new file mode 100644
index 000000000..82c86262f
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/stat.h
@@ -0,0 +1,71 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef _LIBSPL_SYS_STAT_H
+#define	_LIBSPL_SYS_STAT_H
+
+#include_next <sys/stat.h>
+
+#include <sys/mount.h> /* for BLKGETSIZE64 */
+
+#define	stat64	stat
+
+#define	MAXOFFSET_T	OFF_MAX
+
+#ifndef _KERNEL
+#include <sys/disk.h>
+
+static __inline int
+fstat64(int fd, struct stat *sb)
+{
+	int ret;
+
+	ret = fstat(fd, sb);
+	if (ret == 0) {
+		if (S_ISCHR(sb->st_mode))
+			(void) ioctl(fd, DIOCGMEDIASIZE, &sb->st_size);
+	}
+	return (ret);
+}
+#endif
+
+/*
+ * Emulate Solaris' behavior of returning the block device size in fstat64().
+ */
+static inline int
+fstat64_blk(int fd, struct stat64 *st)
+{
+	if (fstat64(fd, st) == -1)
+		return (-1);
+
+	/* In Linux we need to use an ioctl to get the size of a block device */
+	if (S_ISBLK(st->st_mode)) {
+		if (ioctl(fd, BLKGETSIZE64, &st->st_size) != 0)
+			return (-1);
+	}
+
+	return (0);
+}
+#endif /* _LIBSPL_SYS_STAT_H */
diff --git a/lib/libspl/include/os/freebsd/sys/sysmacros.h b/lib/libspl/include/os/freebsd/sys/sysmacros.h
new file mode 100644
index 000000000..d9639d27b
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/sysmacros.h
@@ -0,0 +1 @@
+/* keep me */
diff --git a/lib/libspl/include/os/freebsd/sys/uio.h b/lib/libspl/include/os/freebsd/sys/uio.h
new file mode 100644
index 000000000..d978b6ad0
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/uio.h
@@ -0,0 +1,98 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+/*
+ * University Copyright- Copyright (c) 1982, 1986, 1988
+ * The Regents of the University of California
+ * All Rights Reserved
+ *
+ * University Acknowledgment- Portions of this document are derived from
+ * software developed by the University of California, Berkeley, and its
+ * contributors.
+ */
+
+#ifndef	_LIBSPL_SYS_UIO_H
+#define	_LIBSPL_SYS_UIO_H
+
+#include_next <sys/uio.h>
+
+typedef struct iovec iovec_t;
+typedef enum uio_seg  uio_seg_t;
+
+typedef struct uio {
+	struct iovec	*uio_iov;	/* pointer to array of iovecs */
+	int		uio_iovcnt;	/* number of iovecs */
+	offset_t	uio_loffset;	/* file offset */
+	uio_seg_t	uio_segflg;	/* address space (kernel or user) */
+	uint16_t	uio_fmode;	/* file mode flags */
+	uint16_t	uio_extflg;	/* extended flags */
+	offset_t	uio_limit;	/* u-limit (maximum byte offset) */
+	ssize_t		uio_resid;	/* residual count */
+} uio_t;
+
+typedef enum xuio_type {
+	UIOTYPE_ASYNCIO,
+	UIOTYPE_ZEROCOPY,
+} xuio_type_t;
+
+#define	UIOA_IOV_MAX	16
+
+typedef struct uioa_page_s {		/* locked uio_iov state */
+	int	uioa_pfncnt;		/* count of pfn_t(s) in *uioa_ppp */
+	void	**uioa_ppp;		/* page_t or pfn_t array */
+	caddr_t	uioa_base;		/* address base */
+	size_t	uioa_len;		/* span length */
+} uioa_page_t;
+
+typedef struct xuio {
+	uio_t xu_uio;				/* embedded UIO structure */
+
+	/* Extended uio fields */
+	enum xuio_type xu_type;			/* uio type */
+	union {
+		struct {
+			uint32_t xu_a_state;	/* state of async i/o */
+			ssize_t xu_a_mbytes;	/* bytes moved */
+			uioa_page_t *xu_a_lcur;	/* uioa_locked[] pointer */
+			void **xu_a_lppp;	/* lcur->uioa_pppp[] pointer */
+			void *xu_a_hwst[4];	/* opaque hardware state */
+			uioa_page_t xu_a_locked[UIOA_IOV_MAX];
+		} xu_aio;
+
+		struct {
+			int xu_zc_rw;		/* read or write buffer */
+			void *xu_zc_priv;	/* fs specific */
+		} xu_zc;
+	} xu_ext;
+} xuio_t;
+
+#define	XUIO_XUZC_PRIV(xuio)	xuio->xu_ext.xu_zc.xu_zc_priv
+#define	XUIO_XUZC_RW(xuio)	xuio->xu_ext.xu_zc.xu_zc_rw
+
+#endif	/* _SYS_UIO_H */
diff --git a/lib/libspl/include/os/freebsd/sys/vfs.h b/lib/libspl/include/os/freebsd/sys/vfs.h
new file mode 100644
index 000000000..55eb3c23b
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/vfs.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2020 iXsystems, Inc.
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef ZFS_SYS_VFS_H_
+#define	ZFS_SYS_VFS_H_
+
+#include_next <sys/statvfs.h>
+
+int fsshare(const char *, const char *, const char *);
+int fsunshare(const char *, const char *);
+
+#endif /* !ZFS_SYS_VFS_H_ */
diff --git a/lib/libspl/include/os/freebsd/sys/zfs_context_os.h b/lib/libspl/include/os/freebsd/sys/zfs_context_os.h
new file mode 100644
index 000000000..25b5a47df
--- /dev/null
+++ b/lib/libspl/include/os/freebsd/sys/zfs_context_os.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2020 iXsystems, Inc.
+ * 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 AUTHORS 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 AUTHORS 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef ZFS_CONTEXT_OS_H_
+#define	ZFS_CONTEXT_OS_H_
+
+#if BYTE_ORDER != BIG_ENDIAN
+#undef _BIG_ENDIAN
+#endif
+
+#define	ZFS_EXPORTS_PATH	"/etc/zfs/exports"
+
+#endif
diff --git a/lib/libspl/os/freebsd/getexecname.c b/lib/libspl/os/freebsd/getexecname.c
new file mode 100644
index 000000000..13e50d324
--- /dev/null
+++ b/lib/libspl/os/freebsd/getexecname.c
@@ -0,0 +1,70 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+
+#include <string.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <limits.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <errno.h>
+
+const char *
+getexecname(void)
+{
+	static char execname[PATH_MAX + 1] = "";
+	static pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;
+	char *ptr = NULL;
+	ssize_t rc;
+
+	(void) pthread_mutex_lock(&mtx);
+
+	if (strlen(execname) == 0) {
+		int error, name[4];
+		size_t len;
+
+		name[0] = CTL_KERN;
+		name[1] = KERN_PROC;
+		name[2] = KERN_PROC_PATHNAME;
+		name[3] = -1;
+		len = PATH_MAX;
+		error = sysctl(name, nitems(name), execname, &len, NULL, 0);
+		if (error != 0) {
+			rc = -1;
+		} else {
+			rc = len;
+		}
+		if (rc == -1) {
+			execname[0] = '\0';
+		} else {
+			execname[rc] = '\0';
+			ptr = execname;
+		}
+	} else {
+		ptr = execname;
+	}
+
+	(void) pthread_mutex_unlock(&mtx);
+	return (ptr);
+}
diff --git a/lib/libspl/os/freebsd/gethostid.c b/lib/libspl/os/freebsd/gethostid.c
new file mode 100644
index 000000000..7bd567fe6
--- /dev/null
+++ b/lib/libspl/os/freebsd/gethostid.c
@@ -0,0 +1,36 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2017, Lawrence Livermore National Security, LLC.
+ */
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/systeminfo.h>
+
+unsigned long
+get_system_hostid(void)
+{
+	return (gethostid());
+}
diff --git a/lib/libspl/os/freebsd/getmntany.c b/lib/libspl/os/freebsd/getmntany.c
new file mode 100644
index 000000000..b41e763ce
--- /dev/null
+++ b/lib/libspl/os/freebsd/getmntany.c
@@ -0,0 +1,67 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2006 Ricardo Correia.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved	*/
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/errno.h>
+#include <sys/mnttab.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#define	BUFSIZE	(MNT_LINE_MAX + 2)
+
+__thread char buf[BUFSIZE];
+
+int
+getextmntent(const char *path, struct extmnttab *entry, struct stat64 *statbuf)
+{
+	struct statfs sfs;
+
+	if (strlen(path) >= MAXPATHLEN) {
+		(void) fprintf(stderr, "invalid object; pathname too long\n");
+		return (-1);
+	}
+
+	if (stat64(path, statbuf) != 0) {
+		(void) fprintf(stderr, "cannot open '%s': %s\n",
+		    path, strerror(errno));
+		return (-1);
+	}
+
+	if (statfs(path, &sfs) != 0) {
+		(void) fprintf(stderr, "%s: %s\n", path,
+		    strerror(errno));
+		return (-1);
+	}
+	statfs2mnttab(&sfs, (struct mnttab *)entry);
+	return (0);
+}
diff --git a/lib/libspl/os/freebsd/mnttab.c b/lib/libspl/os/freebsd/mnttab.c
new file mode 100644
index 000000000..5b9e6429d
--- /dev/null
+++ b/lib/libspl/os/freebsd/mnttab.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 2006 Pawel Jakub Dawidek <[email protected]>
+ * 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 AUTHORS 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 AUTHORS 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.
+ */
+
+/*
+ * This file implements Solaris compatible getmntany() and hasmntopt()
+ * functions.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/mntent.h>
+#include <sys/mnttab.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static char *
+mntopt(char **p)
+{
+	char *cp = *p;
+	char *retstr;
+
+	while (*cp && isspace(*cp))
+		cp++;
+
+	retstr = cp;
+	while (*cp && *cp != ',')
+		cp++;
+
+	if (*cp) {
+		*cp = '\0';
+		cp++;
+	}
+
+	*p = cp;
+	return (retstr);
+}
+
+char *
+hasmntopt(struct mnttab *mnt, char *opt)
+{
+	char tmpopts[MNT_LINE_MAX];
+	char *f, *opts = tmpopts;
+
+	if (mnt->mnt_mntopts == NULL)
+		return (NULL);
+	(void) strcpy(opts, mnt->mnt_mntopts);
+	f = mntopt(&opts);
+	for (; *f; f = mntopt(&opts)) {
+		if (strncmp(opt, f, strlen(opt)) == 0)
+			return (f - tmpopts + mnt->mnt_mntopts);
+	}
+	return (NULL);
+}
+
+static void
+optadd(char *mntopts, size_t size, const char *opt)
+{
+
+	if (mntopts[0] != '\0')
+		strlcat(mntopts, ",", size);
+	strlcat(mntopts, opt, size);
+}
+
+void
+statfs2mnttab(struct statfs *sfs, struct mnttab *mp)
+{
+	static char mntopts[MNTMAXSTR];
+	long flags;
+
+	mntopts[0] = '\0';
+
+	flags = sfs->f_flags;
+#define	OPTADD(opt)	optadd(mntopts, sizeof (mntopts), (opt))
+	if (flags & MNT_RDONLY)
+		OPTADD(MNTOPT_RO);
+	else
+		OPTADD(MNTOPT_RW);
+	if (flags & MNT_NOSUID)
+		OPTADD(MNTOPT_NOSETUID);
+	else
+		OPTADD(MNTOPT_SETUID);
+	if (flags & MNT_UPDATE)
+		OPTADD(MNTOPT_REMOUNT);
+	if (flags & MNT_NOATIME)
+		OPTADD(MNTOPT_NOATIME);
+	else
+		OPTADD(MNTOPT_ATIME);
+	OPTADD(MNTOPT_NOXATTR);
+	if (flags & MNT_NOEXEC)
+		OPTADD(MNTOPT_NOEXEC);
+	else
+		OPTADD(MNTOPT_EXEC);
+#undef	OPTADD
+	mp->mnt_special = strdup(sfs->f_mntfromname);
+	mp->mnt_mountp = strdup(sfs->f_mntonname);
+	mp->mnt_fstype = strdup(sfs->f_fstypename);
+	mp->mnt_mntopts = strdup(mntopts);
+}
+
+static struct statfs *gsfs = NULL;
+static int allfs = 0;
+
+static int
+statfs_init(void)
+{
+	struct statfs *sfs;
+	int error;
+
+	if (gsfs != NULL) {
+		free(gsfs);
+		gsfs = NULL;
+	}
+	allfs = getfsstat(NULL, 0, MNT_WAIT);
+	if (allfs == -1)
+		goto fail;
+	gsfs = malloc(sizeof (gsfs[0]) * allfs * 2);
+	if (gsfs == NULL)
+		goto fail;
+	allfs = getfsstat(gsfs, (long)(sizeof (gsfs[0]) * allfs * 2),
+	    MNT_WAIT);
+	if (allfs == -1)
+		goto fail;
+	sfs = realloc(gsfs, allfs * sizeof (gsfs[0]));
+	if (sfs != NULL)
+		gsfs = sfs;
+	return (0);
+fail:
+	error = errno;
+	if (gsfs != NULL)
+		free(gsfs);
+	gsfs = NULL;
+	allfs = 0;
+	return (error);
+}
+
+int
+getmntany(FILE *fd __unused, struct mnttab *mgetp, struct mnttab *mrefp)
+{
+	//	struct statfs *sfs;
+	int i, error;
+
+	error = statfs_init();
+	if (error != 0)
+		return (error);
+
+	for (i = 0; i < allfs; i++) {
+		if (mrefp->mnt_special != NULL &&
+		    strcmp(mrefp->mnt_special, gsfs[i].f_mntfromname) != 0) {
+			continue;
+		}
+		if (mrefp->mnt_mountp != NULL &&
+		    strcmp(mrefp->mnt_mountp, gsfs[i].f_mntonname) != 0) {
+			continue;
+		}
+		if (mrefp->mnt_fstype != NULL &&
+		    strcmp(mrefp->mnt_fstype, gsfs[i].f_fstypename) != 0) {
+			continue;
+		}
+		statfs2mnttab(&gsfs[i], mgetp);
+		return (0);
+	}
+	return (-1);
+}
+
+int
+getmntent(FILE *fp, struct mnttab *mp)
+{
+	//	struct statfs *sfs;
+	int error, nfs;
+
+	nfs = (int)lseek(fileno(fp), 0, SEEK_CUR);
+	if (nfs == -1)
+		return (errno);
+	/* If nfs is 0, we want to refresh out cache. */
+	if (nfs == 0 || gsfs == NULL) {
+		error = statfs_init();
+		if (error != 0)
+			return (error);
+	}
+	if (nfs >= allfs)
+		return (-1);
+	statfs2mnttab(&gsfs[nfs], mp);
+	if (lseek(fileno(fp), 1, SEEK_CUR) == -1)
+		return (errno);
+	return (0);
+}