Remove residual blank line at start of Makefile

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Add tarfs, a filesystem backed by tarballs.

Sponsored by: Juniper Networks, Inc.
Sponsored by: Klara, Inc.
Reviewed by: pauamma, imp
Differential Revision: https://reviews.freebsd.org/D37753

tests/sys/fs: remove mips workaround

MIPS is gone, so we no longer require this check.

Reviewed by: imp, asomers
Differential Revision: https://reviews.freebsd.org/D36566

Refine fusefs test workaround for mips+llvm

This re-enables building the googletest suite by default on mips and instead
specifically doesn't build fusefs tests for mips+clang builds. clang will
ea

Refine fusefs test workaround for mips+llvm

This re-enables building the googletest suite by default on mips and instead
specifically doesn't build fusefs tests for mips+clang builds. clang will
easily spent >= 1.5 hours compiling a single file due to a bug in
optimization (see LLVM PR 43263), so turn these off for now while that's
hashed out.

GCC builds are unaffected and build the fusefs tests as-is. Clang builds
only happen by early adopters attempting to hash out the remaining issues.

The comment has been updated to reflect its new position and use less strong
wording about imposing on people.

Discussed with: ngie, asomers
Reviewed by: ngie

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Merge ^/head r351317 through r351731.

Fix the build with WITHOUT_GOOGLETEST

Attempting to build the fusefs tests WITHOUT_GOOGLETEST will result in an
error if the host system or sysroot doesn't already have googletest headers
in /usr/in

Fix the build with WITHOUT_GOOGLETEST

Attempting to build the fusefs tests WITHOUT_GOOGLETEST will result in an
error if the host system or sysroot doesn't already have googletest headers
in /usr/include/private (e.g. host built/installed WITHOUT_GOOGLETEST, clean
cross-buildworld WITHOUT_GOOGLETEST).

Reviewed by: asomers
Differential Revision: https://reviews.freebsd.org/D21367

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fusefs: merge from projects/fuse2

This commit imports the new fusefs driver. It raises the protocol level
from 7.8 to 7.23, fixes many bugs, adds a test suite for the driver, and
adds many new featu

fusefs: merge from projects/fuse2

This commit imports the new fusefs driver. It raises the protocol level
from 7.8 to 7.23, fixes many bugs, adds a test suite for the driver, and
adds many new features. New features include:

* Optional kernel-side permissions checks (-o default_permissions)
* Implement VOP_MKNOD, VOP_BMAP, and VOP_ADVLOCK
* Allow interrupting FUSE operations
* Support named pipes and unix-domain sockets in fusefs file systems
* Forward UTIME_NOW during utimensat(2) to the daemon
* kqueue support for /dev/fuse
* Allow updating mounts with "mount -u"
* Allow exporting fusefs file systems over NFS
* Server-initiated invalidation of the name cache or data cache
* Respect RLIMIT_FSIZE
* Try to support servers as old as protocol 7.4

Performance enhancements include:

* Implement FUSE's FOPEN_KEEP_CACHE and FUSE_ASYNC_READ flags
* Cache file attributes
* Cache lookup entries, both positive and negative
* Server-selectable cache modes: writethrough, writeback, or uncached
* Write clustering
* Readahead
* Use counter(9) for statistical reporting

PR: 199934 216391 233783 234581 235773 235774 235775
PR: 236226 236231 236236 236291 236329 236381 236405
PR: 236327 236466 236472 236473 236474 236530 236557
PR: 236560 236844 237052 237181 237588 238565
Reviewed by: bcr (man pages)
Reviewed by: cem, ngie, rpokala, glebius, kib, bde, emaste (post-commit
review on project branch)
MFC after: 3 weeks
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Pull Request: https://reviews.freebsd.org/D21110

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fusefs: misc build fixes

* Only build the tests on platforms with C++14 support
* Fix an undefined symbol error on lint builds
* Remove an unused function: fiov_clear

Sponsored by: The FreeBSD Foun

fusefs: misc build fixes

* Only build the tests on platforms with C++14 support
* Fix an undefined symbol error on lint builds
* Remove an unused function: fiov_clear

Sponsored by: The FreeBSD Foundation

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fusefs: adapt the tests to the fuse => fusefs rename

Sponsored by: The FreeBSD Foundation

Begin a fuse(4) test suite

It only tests the kernel portion of fuse, not the userspace portion (which
comes from sysutils/fusefs-libs). The kernel-userspace interface is
de-facto standardized, and

Begin a fuse(4) test suite

It only tests the kernel portion of fuse, not the userspace portion (which
comes from sysutils/fusefs-libs). The kernel-userspace interface is
de-facto standardized, and this test suite seeks to validate FreeBSD's
implementation.

It uses GoogleMock to substitute for a userspace daemon and validate the
kernel's behavior in response to filesystem access. GoogleMock is
convenient because it can validate the order, number, and arguments of each
operation, and return canned responses.

But that also means that the test suite must use GoogleTest, since
GoogleMock is incompatible with atf-c++ and atf.test.mk does not allow C++
programs to use atf-c.

This commit adds the first 10 test cases out of an estimated 130 total.

PR: 235775, 235773
Sponsored by: The FreeBSD Foundation

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Merge ^/head r307383 through r307735.

Integrate contrib/netbsd-tests/fs/tmpfs into the FreeBSD test suite
as tests/sys/fs

These testcases exercise tmpfs support

MFC after: 2 weeks
Sponsored by: Dell EMC Isilon