Add FreeBSD support to ZoL

- Refactor tree in to os specific parts
- Import FreeBSD SPL
- update tests to work on FreeBSD

Signed-off-by: Matt Macy <mmacy@FreeBSD.org>

.gitignore

@@ -63,3 +63,13 @@ cscope.*
 *.log
 venv
 
+*.so
+*.so.debug
+*.so.full
+*.tmp
+*.log
+module/export_syms
+module/machine
+module/x86
+module/zfs.ko.debug
+module/zfs.ko.full

COPYRIGHT

@@ -19,7 +19,7 @@ notable exceptions and their respective licenses include:
   * AES Implementation: module/icp/asm-x86_64/aes/THIRDPARTYLICENSE.gladman
   * AES Implementation: module/icp/asm-x86_64/aes/THIRDPARTYLICENSE.openssl
   * PBKDF2 Implementation: lib/libzfs/THIRDPARTYLICENSE.openssl
-  * SPL Implementation: module/spl/THIRDPARTYLICENSE.gplv2
+  * SPL Implementation: module/os/linux/spl/THIRDPARTYLICENSE.gplv2
 
 This product includes software developed by the OpenSSL Project for use
 in the OpenSSL Toolkit (http://www.openssl.org/)

Makefile.am

@@ -4,19 +4,28 @@ include config/rpm.am
 include config/deb.am
 include config/tgz.am
 
-SUBDIRS = include rpm
+SUBDIRS = include
+if BUILD_LINUX
+SUBDIRS+= rpm
+endif
+
 if CONFIG_USER
-SUBDIRS += udev etc man scripts lib tests cmd contrib
+SUBDIRS += etc man scripts lib tests cmd contrib
+if BUILD_LINUX
+SUBDIRS+= udev
+endif
 endif
 if CONFIG_KERNEL
 SUBDIRS += module
 
 extradir = $(prefix)/src/zfs-$(VERSION)
 extra_HEADERS = zfs.release.in zfs_config.h.in
 
+if BUILD_LINUX
 kerneldir = $(prefix)/src/zfs-$(VERSION)/$(LINUX_VERSION)
 nodist_kernel_HEADERS = zfs.release zfs_config.h module/$(LINUX_SYMBOLS)
 endif
+endif
 
 AUTOMAKE_OPTIONS = foreign
 EXTRA_DIST  = autogen.sh copy-builtin
@@ -28,7 +37,8 @@ EXTRA_DIST += CODE_OF_CONDUCT.md
 EXTRA_DIST += module/icp/algs/skein/THIRDPARTYLICENSE module/icp/algs/skein/THIRDPARTYLICENSE.descrip
 EXTRA_DIST += module/icp/asm-x86_64/aes/THIRDPARTYLICENSE.gladman module/icp/asm-x86_64/aes/THIRDPARTYLICENSE.gladman.descrip
 EXTRA_DIST += module/icp/asm-x86_64/aes/THIRDPARTYLICENSE.openssl module/icp/asm-x86_64/aes/THIRDPARTYLICENSE.openssl.descrip
-EXTRA_DIST += module/spl/THIRDPARTYLICENSE.gplv2 module/spl/THIRDPARTYLICENSE.gplv2.descrip
+EXTRA_DIST += module/os/linux/spl/THIRDPARTYLICENSE.gplv2
+EXTRA_DIST += module/os/linux/spl/THIRDPARTYLICENSE.gplv2.descrip
 EXTRA_DIST += module/zfs/THIRDPARTYLICENSE.cityhash module/zfs/THIRDPARTYLICENSE.cityhash.descrip
 
 @CODE_COVERAGE_RULES@
@@ -60,6 +70,7 @@ dist-hook: gitrev
 	sed -i 's/Release:[[:print:]]*/Release:      $(RELEASE)/' \
 		$(distdir)/META
 
+if BUILD_LINUX
 # For compatibility, create a matching spl-x.y.z directly which contains
 # symlinks to the updated header and object file locations.  These
 # compatibility links will be removed in the next major release.
@@ -76,6 +87,7 @@ install-data-hook:
 	ln -fs zfs_config.h spl_config.h && \
 	ln -fs zfs.release spl.release
 endif
+endif
 
 codecheck: cstyle shellcheck flake8 mancheck testscheck vcscheck
 
@@ -88,15 +100,18 @@ commitcheck:
 
 cstyle:
 	@find ${top_srcdir} -name '*.[hc]' ! -name 'zfs_config.*' \
-		! -name '*.mod.c' -type f \
+		! -name '*.mod.c' ! -name '*_if.h'  ! -path "*/os/freebsd/*" \
+                -type f \
 		-exec ${top_srcdir}/scripts/cstyle.pl -cpP {} \+
 
+filter_executable = -exec test -x '{}' \; -print
+
 shellcheck:
 	@if type shellcheck > /dev/null 2>&1; then \
-		shellcheck --exclude=SC1090 --format=gcc \
+		shellcheck --exclude=SC1090 --exclude=SC1117 --format=gcc \
 			$$(find ${top_srcdir}/scripts/*.sh -type f) \
 			$$(find ${top_srcdir}/cmd/zed/zed.d/*.sh -type f) \
-			$$(find ${top_srcdir}/cmd/zpool/zpool.d/* -executable); \
+			$$(find ${top_srcdir}/cmd/zpool/zpool.d/* -type f ${filter_executable}); \
 	else \
 		echo "skipping shellcheck because shellcheck is not installed"; \
 	fi
@@ -111,13 +126,19 @@ mancheck:
 		echo "skipping mancheck because mandoc is not installed"; \
 	fi
 
+if BUILD_LINUX
+stat_fmt = -c '%A %n'
+else
+stat_fmt = -f '%Sp %N'
+endif
+
 testscheck:
 	@find ${top_srcdir}/tests/zfs-tests -type f \
-		\( -name '*.ksh' -not -executable \) -o \
-		\( -name '*.kshlib' -executable \) -o \
-		\( -name '*.shlib' -executable \) -o \
-		\( -name '*.cfg' -executable \) | \
-		xargs -r stat -c '%A %n' | \
+		\( -name '*.ksh' -not ${filter_executable} \) -o \
+		\( -name '*.kshlib' ${filter_executable} \) -o \
+		\( -name '*.shlib' ${filter_executable} \) -o \
+		\( -name '*.cfg' ${filter_executable} \) | \
+		xargs -r stat ${stat_fmt} | \
 		awk '{c++; print} END {if(c>0) exit 1}'
 
 vcscheck:

README.md

@@ -1,31 +1,28 @@
-![img](http://zfsonlinux.org/images/zfs-linux.png)
+![img](https://github.com/zfsonfreebsd/ZoF/raw/master/zof-logo.png)
 
 ZFS on Linux is an advanced file system and volume manager which was originally
-developed for Solaris and is now maintained by the OpenZFS community.
+developed for Solaris and is now maintained by the OpenZFS community. ZoF is the work
+to bring FreeBSD support into the ZoL repo.
 
 [![codecov](https://codecov.io/gh/zfsonlinux/zfs/branch/master/graph/badge.svg)](https://codecov.io/gh/zfsonlinux/zfs)
 [![coverity](https://scan.coverity.com/projects/1973/badge.svg)](https://scan.coverity.com/projects/zfsonlinux-zfs)
 
 # Official Resources
 
-  * [Site](http://zfsonlinux.org)
-  * [Wiki](https://github.com/zfsonlinux/zfs/wiki)
-  * [Mailing lists](https://github.com/zfsonlinux/zfs/wiki/Mailing-Lists)
+  * [ZoF GitHub Site](https://zfsonfreebsd.github.io/ZoF/)
+  * [ZoL Site](http://zfsonlinux.org)
+  * [ZoL Wiki](https://github.com/zfsonlinux/zfs/wiki)
+  * [ZoL Mailing lists](https://github.com/zfsonlinux/zfs/wiki/Mailing-Lists)
   * [OpenZFS site](http://open-zfs.org/)
+  * [HEAD Snapshots](http://pkg.trueos.org/iso/freebsd-pkgbase/)
 
 # Installation
 
-Full documentation for installing ZoL on your favorite Linux distribution can
-be found at [our site](http://zfsonlinux.org/).
+[FreeBSD HEAD Snapshot Images](http://pkg.trueos.org/iso/freebsd-pkgbase/) are available from the [TrueOS Project](https://www.trueos.org).
 
-# Contribute & Develop
+Legacy ZFS is disabled in the src build (While enabled for the boot-loader) and ZoF is included automatically via the ports system as sysutils/zol and sysutils/zol-kmod.
 
-We have a separate document with [contribution guidelines](./.github/CONTRIBUTING.md).
+# Issues
 
-# Release
+Issues can be reported via GitHub's [Issue Tracker](https://github.com/zfsonfreebsd/ZoF).
 
-ZFS on Linux is released under a CDDL license.  
-For more details see the NOTICE, LICENSE and COPYRIGHT files; `UCRL-CODE-235197`
-
-# Supported Kernels
-  * The `META` file contains the officially recognized supported kernel versions.

_config.yml

@@ -0,0 +1 @@
+theme: jekyll-theme-slate

cmd/Makefile.am

@@ -5,4 +5,6 @@ if USING_PYTHON
 SUBDIRS += arcstat arc_summary dbufstat
 endif
 
+if BUILD_LINUX
 SUBDIRS += mount_zfs zed zvol_id
+endif

cmd/arc_summary/Makefile.am

@@ -1,11 +1,17 @@
 EXTRA_DIST = arc_summary2 arc_summary3
 
+transform = $(program_transform_name)
+
 if USING_PYTHON_2
 dist_bin_SCRIPTS = arc_summary2
 install-exec-hook:
-	mv $(DESTDIR)$(bindir)/arc_summary2 $(DESTDIR)$(bindir)/arc_summary
+	before=$$(echo arc_summary2 | sed '$(transform)'); \
+	after=$$(echo arc_summary | sed '$(transform)'); \
+	mv "$(DESTDIR)$(bindir)/$$before" "$(DESTDIR)$(bindir)/$$after"
 else
 dist_bin_SCRIPTS = arc_summary3
 install-exec-hook:
-	mv $(DESTDIR)$(bindir)/arc_summary3 $(DESTDIR)$(bindir)/arc_summary
+	before=$$(echo arc_summary3 | sed '$(transform)'); \
+	after=$$(echo arc_summary | sed '$(transform)'); \
+	mv "$(DESTDIR)$(bindir)/$$before" "$(DESTDIR)$(bindir)/$$after"
 endif

cmd/arc_summary/arc_summary2

@@ -54,6 +54,10 @@ import errno
 from subprocess import Popen, PIPE
 from decimal import Decimal as D
 
+#Requires py27-sysctl on FreeBSD
+if sys.platform.startswith('freebsd'):
+    import sysctl
+
 show_tunable_descriptions = False
 alternate_tunable_layout = False
 
@@ -79,12 +83,18 @@ def get_Kstat():
     def load_proc_kstats(fn, namespace):
         """Collect information on a specific subsystem of the ARC"""
 
-        kstats = [line.strip() for line in open(fn)]
-        del kstats[0:2]
-        for kstat in kstats:
-            kstat = kstat.strip()
-            name, _, value = kstat.split()
-            Kstat[namespace + name] = D(value)
+        if sys.platform.startswith('freebsd'):
+            kstats = sysctl.filter(namespace)
+            for kstat in kstats:
+                name, value = kstat.name, kstat.value
+                Kstat[name] = D(value)
+        else:
+            kstats = [line.strip() for line in open(fn)]
+            del kstats[0:2]
+            for kstat in kstats:
+                kstat = kstat.strip()
+                name, _, value = kstat.split()
+                Kstat[namespace + name] = D(value)
 
     Kstat = {}
     load_proc_kstats('/proc/spl/kstat/zfs/arcstats',
@@ -921,13 +931,16 @@ def _tunable_summary(Kstat):
     global show_tunable_descriptions
     global alternate_tunable_layout
 
-    names = os.listdir("/sys/module/zfs/parameters/")
+    if sys.platform.startswith('freebsd'):
+        ctls = sysctl.filter('vfs.zfs')
+    else:
+        names = os.listdir("/sys/module/zfs/parameters/")
 
-    values = {}
-    for name in names:
-        with open("/sys/module/zfs/parameters/" + name) as f:
-            value = f.read()
-        values[name] = value.strip()
+        values = {}
+        for name in names:
+            with open("/sys/module/zfs/parameters/" + name) as f:
+                value = f.read()
+            values[name] = value.strip()
 
     descriptions = {}
 
@@ -966,22 +979,31 @@ def _tunable_summary(Kstat):
             sys.stderr.write("Tunable descriptions will be disabled.\n")
 
     sys.stdout.write("ZFS Tunables:\n")
-    names.sort()
+    if not sys.platform.startswith('freebsd'):
+        names.sort()
 
     if alternate_tunable_layout:
         fmt = "\t%s=%s\n"
     else:
         fmt = "\t%-50s%s\n"
 
-    for name in names:
+    if sys.platform.startswith('freebsd'):
+        for ctl in ctls:
+
+            if show_tunable_descriptions and ctl.name in descriptions:
+                sys.stdout.write("\t# %s\n" % descriptions[ctl.name])
+
+            sys.stdout.write(fmt % (ctl.name, ctl.value))
+    else:
+        for name in names:
 
-        if not name:
-            continue
+            if not name:
+                continue
 
-        if show_tunable_descriptions and name in descriptions:
-            sys.stdout.write("\t# %s\n" % descriptions[name])
+            if show_tunable_descriptions and name in descriptions:
+                sys.stdout.write("\t# %s\n" % descriptions[name])
 
-        sys.stdout.write(fmt % (name, values[name]))
+            sys.stdout.write(fmt % (name, values[name]))
 
 
 unSub = [