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r362880 | tuexen | 2020-07-01 16:47:51 -0700 (Wed, 01 Jul 2020) | 14 lines

MFC r349893:

This commit updates rack to what is basically being used at NF as
well as sets in some of the groundwork for committing BBR. The
hpts system is updated as well as some other needed utilities
for the entrance of BBR. This is actually part 1 of 3 more
needed commits which will finally complete with BBRv1 being
added as a new tcp stack.

Merge conflics were manually resolved.

Sponsored by:		Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D20834

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r362881 | mav | 2020-07-01 18:02:40 -0700 (Wed, 01 Jul 2020) | 2 lines

MFC r362630: Fix few panics on NVMe's timing out initialization requests.

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r362892 | 0mp | 2020-07-02 09:10:34 -0700 (Thu, 02 Jul 2020) | 14 lines

MFC 362321:

Improve periodic(8) manual page presentation

- Update synopsis to present all available arguments.
- Consistently call the argument specifying an arbitrary directory a
  "directory".
- Do not put macros into -width argument to Bl. They do not expand there.
- Stylize command modifiers like "daily" with Cm instead of Pa. While
  technically periodic(8) operates on directories with such names, it is
  confusing from the perspective of the manual page reader as Pa and Ar are
  stylized the same way. Also, I cannot recall a single manual page where
  Pa would be used to describe the syntax of command-line arguments.

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r362894 | 0mp | 2020-07-02 09:12:52 -0700 (Thu, 02 Jul 2020) | 4 lines

MFC 362325:

Fix the --guid flag description

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r362896 | 0mp | 2020-07-02 09:16:01 -0700 (Thu, 02 Jul 2020) | 20 lines

MFC 362324:

Clean up and improve manual page for fuser(1)

- Mention option's arguments in the list of options (so that now we mention
  "-N system" instead of just "-N").
- Stylize signals and other constants like O_APPEND with Dv.
- Sort options.
- Change indentation width for readability.
- Fix a couple of typos.
- Sort symbols list.
- Use Sy instead of Cm for symbols. They are not command modifiers.
- Use Ex -std in the EXIT STATUS section for consistency with other manual
  pages.
- Use Ql instead of Dq Li for inline code examples as Li has recently been
  deprecated by mdoc.

Reviewed by:	bcr
Differential Revision:	https://reviews.freebsd.org/D25332

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r362898 | thj | 2020-07-02 11:40:22 -0700 (Thu, 02 Jul 2020) | 8 lines

MFC r362379:

Fix typo in apic.4

Reviewed by:    bcr (manpages)
Approved by:    jtl (co-mentor)
Differential Revision:  https://reviews.freebsd.org/D2535

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r362907 | delphij | 2020-07-03 00:22:34 -0700 (Fri, 03 Jul 2020) | 2 lines

MFC r362642: Don't log normal login_getpwclass(3) result.

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r362911 | kaktus | 2020-07-03 04:44:43 -0700 (Fri, 03 Jul 2020) | 9 lines

MFC r362611

man page of select(2) should mention pselect(2)

Reviewed by:	bcr (manpages), kib, trasz
Approved by:	kib (mentor)
MFC after:	7 days
Sponsored by:	Mysterious Code Ltd.

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r362915 | delphij | 2020-07-03 20:26:17 -0700 (Fri, 03 Jul 2020) | 2 lines

MFC r362452, r362478: liblzma: Make liblzma use libmd implementation of SHA256.

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r362916 | delphij | 2020-07-03 20:27:51 -0700 (Fri, 03 Jul 2020) | 3 lines

Bump __FreeBSD_version after making liblzma to use libmd implementation
of SHA256.

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r362924 | pstef | 2020-07-03 23:34:55 -0700 (Fri, 03 Jul 2020) | 4 lines

MFC r362705 and r362707:
ps(1): reuse keyword "cpu" to show CPU number
ps(1): don't try to handle non-SMP systems

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r362925 | hrs | 2020-07-04 00:04:56 -0700 (Sat, 04 Jul 2020) | 6 lines

MFC r362770:

Fix CTYPE for ja_JP.eucJP and ja_JP.SJIS.

PR:		163168

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r362926 | kib | 2020-07-04 01:34:43 -0700 (Sat, 04 Jul 2020) | 3 lines

MFC r362706:
amd64 pmap: explain ptepindex.

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r362928 | lwhsu | 2020-07-04 02:18:19 -0700 (Sat, 04 Jul 2020) | 7 lines

MFC r362672:

rtwn: Add a USB ID for Buffalo WI-U2-433DHP

PR:		247573
Submitted by:	HATANO Tomomi <hatanou@infolab.ne.jp>

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r362933 | eugen | 2020-07-04 08:16:48 -0700 (Sat, 04 Jul 2020) | 7 lines

MFC r362502,r362503: network.subr, rc.conf: unobsolete gif_interfaces.

There are cases when gif_interfaces cannot be replaced
with cloned_interfaces, such as tunnels with external IPv6 addresses
and internal IPv4 or vice versa. Such configuration requires
extra invocation of ifconfig(8) and supported with gif_interfaces only.

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r362939 | kib | 2020-07-04 23:50:22 -0700 (Sat, 04 Jul 2020) | 3 lines

MFC r362711:
top: do not try to use sysctl machdep.smp_active.

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r362955 | 0mp | 2020-07-06 02:04:06 -0700 (Mon, 06 Jul 2020) | 4 lines

MFC 362676:

Fix trailing-comma-related typos in the tree when the Xr macro is used

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r362959 | markj | 2020-07-06 06:54:18 -0700 (Mon, 06 Jul 2020) | 5 lines

MFC r362496, r362592:
acpi_ibm(4): Add support for putting fans in disengaged mode.

PR:	247306

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r362960 | markj | 2020-07-06 06:54:44 -0700 (Mon, 06 Jul 2020) | 3 lines

MFC r362739:
Remove some redundant assignments and computations.

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r362961 | markj | 2020-07-06 07:00:20 -0700 (Mon, 06 Jul 2020) | 3 lines

MFC r362338:
Add the SCTP_SUPPORT kernel option.

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r362964 | mhorne | 2020-07-06 08:00:28 -0700 (Mon, 06 Jul 2020) | 6 lines

MFC r362788:

Fix printf(3) output of long doubles on RISC-V

PR:	242067

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r362983 | lwhsu | 2020-07-06 23:04:21 -0700 (Mon, 06 Jul 2020) | 8 lines

MFC r362539:

Mention CI system information in development(7)

Approved by:	0mp, bcr
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25340

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r362996 | gbe | 2020-07-07 11:37:06 -0700 (Tue, 07 Jul 2020) | 11 lines

MFC r362779: gre(4): Add a STANDARDS section

Expand the mentioned RFC in the SEE ALSO section
and reference RFC1701 and RFC1702.

PR:	240250
Reviewed by:	bcr (mentor)
Approved by:	bcr (mentor)
Obtained from:	OpenBSD
Differential Revision:	https://reviews.freebsd.org/D25504

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r363004 | rscheff | 2020-07-08 02:00:05 -0700 (Wed, 08 Jul 2020) | 16 lines

MFC r362577: TCP: make after-idle work for transactional sessions.

The use of t_rcvtime as proxy for the last transmission
fails for transactional IO, where the client requests
data before the server can respond with a bulk transfer.

Set aside a dedicated variable to actually track the last
locally sent segment going forward.

Reported by:	rrs
Reviewed by:	rrs, tuexen (mentor)
Approved by:	tuexen (mentor), rgrimes (mentor, blanket)
MFC after:	2 weeks
Sponsored by:	NetApp, Inc.
Differential Revision:	https://reviews.freebsd.org/D25016

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r363005 | rscheff | 2020-07-08 02:04:20 -0700 (Wed, 08 Jul 2020) | 16 lines

MFC r362580: TCP: fix cubic RTO reaction.

Proper TCP Cubic operation requires the knowledge
of the maximum congestion window prior to the
last congestion event.

This restores and improves a bugfix previously added
by jtl@ but subsequently removed due to a revert.

Reported by:	chengc_netapp.com
Reviewed by:	chengc_netapp.com, tuexen (mentor)
Approved by:	tuexen (mentor), rgrimes (mentor, blanket)
MFC after:	2 weeks
Sponsored by:	NetApp, Inc.
Differential Revision:	https://reviews.freebsd.org/D25133

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r363006 | kib | 2020-07-08 03:04:12 -0700 (Wed, 08 Jul 2020) | 3 lines

MFC r362948:
Fix typo.

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r363016 | mav | 2020-07-08 10:59:00 -0700 (Wed, 08 Jul 2020) | 3 lines

MFC r346386, r347890, r347896, r349895:
remove the 4GB boundary requirement on PCI DMA segments

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r363017 | kevans | 2020-07-08 11:29:06 -0700 (Wed, 08 Jul 2020) | 89 lines

MFC r361798, r361800: vfs: default disallow read(2) of a directory

This MFC is in accordance with the original MFC plan outlined in the commit
message for r361798, appearing in full (with exception to metadata) below.

To summarize: this MFC only merges back the sysctl with a default disallow
policy, as in head, to ensure we hit any issues quickly but in a fashion
that end users can easily revert. Interested parties can flip the
security.bsd.allow_read_dir sysctl back to 1 to fully honor the previous
behavior of allowing read(2) of any dir, filesystem permitting.

r361798:
vfs: add restrictions to read(2) of a directory [1/2]

Historically, we've allowed read() of a directory and some filesystems will
accommodate (e.g. ufs/ffs, msdosfs). From the history department staffed by
Warner: <<EOF

pdp-7 unix seemed to allow reading directories, but they were weird, special
things there so I'm unsure (my pdp-7 assembler sucks).

1st Edition's sources are lost, mostly. The kernel allows it. The
reconstructed sources from 2nd or 3rd edition read it though.

V6 to V7 changed the filesystem format, and should have been a warning, but
reading directories weren't materially changed.

4.1b BSD introduced readdir because of UFS. UFS broke all directory reading
programs in 1983. ls, du, find, etc all had to be rewritten. readdir() and
friends were introduced here.

SysVr3 picked up readdir() in 1987 for the AT&T fork of Unix. SysVr4 updated
all the directory reading programs in 1988 because different filesystem
types were introduced.

In the 90s, these interfaces became completely ubiquitous as PDP-11s running
V7 faded from view and all the folks that initially started on V7 upgraded
to SysV. Linux never supported this (though I've not done the software
archeology to check) because it has always had a pathological diversity of
filesystems.
EOF

Disallowing read(2) on a directory has the side-effect of masking
application bugs from relying on other implementation's behavior
(e.g. Linux) of rejecting these with EISDIR across the board, but allowing
it has been a vector for at least one stack disclosure bug in the past[0].

By POSIX, this is implementation-defined whether read() handles directories
or not. Popular implementations have chosen to reject them, and this seems
sensible: the data you're reading from a directory is not structured in some
unified way across filesystem implementations like with readdir(2), so it is
impossible for applications to portably rely on this.

With this patch, we will reject most read(2) of a dirfd with EISDIR. Users
that know what they're doing can conscientiously set
bsd.security.allow_read_dir=1 to allow read(2) of directories, as it has
proven useful for debugging or recovery. A future commit will further limit
the sysctl to allow only the system root to read(2) directories, to make it
at least relatively safe to leave on for longer periods of time.

While we're adding logic pertaining to directory vnodes to vn_io_fault, an
additional assertion has also been added to ensure that we're not reaching
vn_io_fault with any write request on a directory vnode. Such request would
be a logical error in the kernel, and must be debugged rather than allowing
it to potentially silently error out.

Commented out shell aliases have been placed in root's chsrc/shrc to promote
awareness that grep may become noisy after this change, depending on your
usage.

A tentative MFC plan has been put together to try and make it as trivial as
possible to identify issues and collect reports; note that this will be
strongly re-evaluated. Tentatively, I will MFC this knob with the default as
it is in HEAD to improve our odds of actually getting reports. The future
priv(9) to further restrict the sysctl WILL NOT BE MERGED BACK, so the knob
will be a faithful reversion on stable/12. We will go into the merge
acknowledging that the sysctl default may be flipped back to restore
historical behavior at *any* point if it's warranted.

[0] https://www.freebsd.org/security/advisories/FreeBSD-SA-19:10.ufs.asc

r361800:
RELNOTES and UPDATING: Document the new policy on read(2) of dirfd

These changes have been completely flushed as of r361799; note it.

PR:		246412
Relnotes:	yes 100%

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