MFC r306030,r306031,r306033,r306036,r306038,r307190,r307196,r307204,r307205,r307701,r307702:

r306030:

Port vnode_leak_test:main to FreeBSD

Use a simpler way of dumping kern.maxvnodes, i.e. sysctl -n kern.maxvnodes

The awk filtering method employed in NetBSD doesn't work on FreeBSD

r306031:

Port contrib/netbsd-tests/fs/h_funcs.subr to FreeBSD

Use kldstat -m to determine whether or not a filesystem is loaded. This works
well with tmpfs, ufs, and zfs

r306033:

Port sizes_test and statvfs_test to FreeBSD

Similar to r306030, use a simpler method for getting the value of
hw.pagesize, i.e. sysctl -n hw.pagesize. The awk filtering method doesn't
work on FreeBSD

r306036:

Port to mknod_test and readdir_test to FreeBSD

The mknod <file> p command doesn't exist on FreeBSD, like on NetBSD. Use
mkfifo instead to create named pipes (FIFOs).

r306038:

Port vnd_test to FreeBSD

Use mdmfs/mdconfig instead of vndconfig/newfs. vndconfig doesn't exist on FreeBSD.

TODO: need to parameterize out the md(4) device as it's currently hardcoded to "3"
(in both the FreeBSD and NetBSD cases).

r307190:

Skip :uchg on FreeBSD

Unfortunately removing files with uchg set always succeeds with root on
FreeBSD. Unfortunately running the test as an unprivileged user isn't doable
because mounting tmpfs requires root

PR: 212861

r307196:

Port contrib/netbsd-tests/fs/tmpfs/h_tools.c to FreeBSD

• Add inttypes.h #include for PRId64 macro
• Use FreeBSD's copy of getfh(2), which doesn't include a fh_size parameter. Use sizeof(fhandle_t) instead as the size of fhp is always fixed as fhandle_t, unlike NetBSD's copy of fhp, which is void*.

r307204:

Expect :large to fail on FreeBSD

FreeBSD doesn't appear to validate large -o size values like
NetBSD does

PR: 212862

r307205:

Change atf_skip call to atf_expect_fail to make it clear that a failure is
expected

PR: 212861
Suggested by: jmmv

r307701:

Expect tests/sys/fs/tmpfs/link_test:kqueue to fail

It fails with: "dir/b did not receive NOTE_LINK"

Also, add needed cleanup logic to cleanup the mountpoint after the fact

PR: 213662

r307702:

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

These testcases exercise tmpfs support