The current default is provided in various Makefile.inc in some top-level
directories and covers a good portion of the tree, but doesn't cover parts
of the build a little deeper (e.g. libcasper).
Provide a default in src.sys.mk and set WARNS to it in bsd.sys.mk if that
variable is defined. This lets us relatively cleanly provide a default WARNS
no matter where you're building in the src tree without breaking things
outside of the tree.
Crunchgen has been updated as a bootstrap tool to work on this change
because it needs r365605 at a minimum to succeed. The cleanup necessary to
successfully walk over this change on WITHOUT_CLEAN builds has been added.
There is a supplemental project to this to list all of the warnings that are
encountered when the environment has WARNS=6 NO_WERROR=yes:
https://warns.kevans.dev -- this project will hopefully eventually go away
in favor of CI doing a much better job than it.
Reviewed by: emaste, brooks, ngie (all earlier version)
Reviewed by: emaste, arichardson (depend-cleanup.sh change)
Differential Revision: https://reviews.freebsd.org/D26455
(default: WITH_GH_BC) and 12-STABLE (default: WITHOUT_GH_BC).
Since the new implementation of bc and dc is optionally available in
12-STABLE, I intend to MFC these descriptions for inclusion in 12.2.
MFC after: 3 days
In D12421, the ability to compile stand/ in little-endian was added, with the
intention to extend loader.kboot to run in Petitboot.
However, no further work was done, as the kernel then gained self-execution
capabilities as Petitboot was taught to load FreeBSD kernels directly.
The FreeBSD installer on powerpc64 (on POWER8 and POWER9) uses
/boot/etc/kboot.conf instead of loader.
As this option does nothing but cause stand/ to be miscompiled and actively
causes confusion, remove it.
(I have a functioning petitboot loader in my local tree, however, it turned
out to be quite inconvient to use due to the current petitboot plugin design
so I put it on hold.)
Reviewed by: emaste, imp, jhibbits
Sponsored by: Tag1 Consulting, Inc.
Differential Revision: https://reviews.freebsd.org/D26430
The floppy test passes with this. The others fail due to 'integrity
checks' failing in GPART. It's not at all clear those integrity
checks are legit or if the test samples were bogusly generated
by FreeBSD.
These images are no longer relevant... However, I've also not tested
the regression test here to see if it still works or not... It needs
a lot of love regardless...
Currently, WITHOUT_PORTSNAP forces WITHOUT_FREEBSD_UPDATE because the
latter relies on phttpget, which lives inside the portsnap build bits.
Remove the dependency between these two options by moving phttpget out into
^/libexec and building/installing it if either WITH_PORTSNAP or
WITH_FREEBSD_UPDATE.
Future work could remove the conditional if it's decided that users will use
it independently of either the current in-base consumers.
Reported by: swills
Reviewed by: jilles, emaste
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D26255
This allows use of the standard src.conf configuration for controlling
whether the tree is cleaned before build or not. The default is still
to clean.
Setting either NOCLEAN or NO_CLEAN will mention the new src.conf option.
NOCLEAN remains a .warning, while for now NO_CLEAN is .info.
Reviewed by: bdrewery (earlier version)
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D22762
We have some hacks to remove stale dependency files for NO_CLEAN
builds that are missed by make's dependency handling. These are
intended to upport ongoing NO_CLEAN builds, and are no longer needed
after a sufficient amount of time elapses.
MK_MALLOC_PRODUCTION option on -CURRENT.
Also, for the sake of backwards compatibility, support the old way of
enabling 'production malloc', e.g. by adding a define in make.conf(5).
MFC after: 1 week
X-MFC-With: r365371
For historical reasons, defining MALLOC_PRODUCTION in /etc/make.conf has
been used to turn off potentially expensive debug checks and statistics
gathering in the implementation of malloc(3).
It seems more consistent to turn this into a regular src.conf(5) option,
e.g. WITH_MALLOC_PRODUCTION / WITHOUT_MALLOC_PRODUCTION. This can then
be toggled similar to any other source build option, and turned on or
off by default for e.g. stable branches.
Reviewed by: imp, #manpages
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26337
pmtimer was removed from base some time ago. apm hasn't been relevant
for these devices in a long time (and was commented out). Remove them
both from these config files.
-DNO_CLEAN builds have had trouble across the OpenZFS import. It's not
worth the effort to try to address this with any granularity; instead,
just trigger on a .depend file indicating a tree from before the import,
and remove the whole cddl object tree.
Reviewed by: mmacy, kevans
Differential Revision: https://reviews.freebsd.org/D26189
The most awkward bit in this patch is the bootstrapping of m4:
We can't simply use the host version of m4 since that is not compatible
with the flags passed by lex (at least on macOS, possibly also on Linux).
Therefore we need to bootstrap m4, but lex needs m4 to build and m4 also
depends on lex (which needs m4 to generate any files). To work around this
cyclic dependency we can build a bootstrap version of m4 (with pre-generated
files) then use that to build the real m4.
This patch also changes the xz/unxz/dd tools to always use the host version
since the version in the source tree cannot easily be bootstrapped on macOS
or Linux.
Reviewed By: brooks, imp (earlier version)
Differential Revision: https://reviews.freebsd.org/D25992
In most cases this simply builds the file from lib/libc for missing
functions (e.g. strlcpy on Linux etc.). In cases where this is not possible
I've added an implementation to tools/build/cross-build.
The fgetln.c/fgetwln.c/closefrom.c compatibility code was obtained from
https://gitlab.freedesktop.org/libbsd/libbsd, but I'm not sure it makes
sense to import it into to contrib just for these three bootstrap files.
Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D25978
These headers are required in order to build the bootstrap tools on macOS
and Linux. A follow-up commit will add implementations of functions that
don't exist on those operating systems to -legacy when bootstrapping.
Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D14316
The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.
I would advise against doing 'zpool upgrade'
or creating indispensable pools using new
features until this change has had a month+
to soak.
Work on merging FreeBSD support in to what was
at the time "ZFS on Linux" began in August 2018.
I first publicly proposed transitioning FreeBSD
to (new) OpenZFS on December 18th, 2018. FreeBSD
support in OpenZFS was finally completed in December
2019. A CFT for downstreaming OpenZFS support in
to FreeBSD was first issued on July 8th. All issues
that were reported have been addressed or, for
a couple of less critical matters there are
pull requests in progress with OpenZFS. iXsystems
has tested and dogfooded extensively internally.
The TrueNAS 12 release is based on OpenZFS with
some additional features that have not yet made
it upstream.
Improvements include:
project quotas, encrypted datasets,
allocation classes, vectorized raidz,
vectorized checksums, various command line
improvements, zstd compression.
Thanks to those who have helped along the way:
Ryan Moeller, Allan Jude, Zack Welch, and many
others.
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25872
Although I can't reproduce it, others are seeing different lex/yacc
programs always regenerated after my change to copy rather than
symlink the files. The reported fix is to add '-p' to the copies.
Since it doesn't hurt, go head and add it, though the reasons for
this mattering remain at best obscure and poorly articulated.
- Update tools/tools/locale to add make targets to automatically
generate locale source files. With this change, just typing
"make obj && make -j4" will rebuild them. Check README for more details.
- Fix issues in ja_JP ctypedef and range specification support
in utf8-rollup.pl.
- Add a temporary patch for UnicodeData.txt to fix code ranges of
CJK Ideograph Extension A and Extension B.
- tools/cldr2def.pl:
Use eucJP for ja_JP ctypedef because eucJP is not compatible with UTF-8.
- tools/convert_map.pl:
Add a verbose error message.
- tools/utf8-rollup.pl:
Normalize entries to use Unicode, not UTF-8.
Reviewed by: bapt
Differential Revision: https://reviews.freebsd.org/D25503
The -P flag is required by POSIX so we don't have to care whether pwd is
a shell builtin or not. This also allows removing pwd from the list of
bootstrap tools since all shells we care about for building have a
builtin pwd command. This effectively reverts r364190.
Suggested By: rgrimes, jrtc27
After r364166 and r364174, crunchgen needs a pwd binary in $PATH instead
of using a hardcoded absolute path. This commit is needed for
BUILD_WITH_STRICT_TMPPATH builds (currently not on by default).
libifconfig_sfp.h provides an API in libifconfig for querying SFP module
properties, operational status, and vendor strings, as well as descriptions
of the various fields, string conversions, and other useful helpers for
implementing user interfaces.
SFP module status is obtained by reading registers via an I2C interface.
Descriptions of these registers and the values therein have been collected
in a Lua table which is used to generate all the boilerplace C headers and
source files for accessing these values, their names, and descriptions.
The generated code is fully commented and readable.
This is the first use of libifconfig in ifconfig itself. For now, the
scope remains very limited. Over time, more of ifconfig will be replaced
with libifconfig.
Some minor changes to the formatting of ifconfig output have been made:
- Module memory hex dumps are indented one extra space as a result of using
hexdump(3) instead of a bespoke hex dump function.
- Media descriptions have an added two-character short-name in parenthesis.
- QSFP modules were incorrectly displaying TX bias current as power. Now
TX channels display bias current, and this change has been made for both
SFP and QSFP modules for consistency.
A Lua binding for libifconfig including this functionality is implemented
but has not been included in this commit. The plan is for it to be
committed after dynamic module loading has been enabled in flua.
Reviewed by: kp, melifaro
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D25494
make copies instead.
There's too many times that we can't run the new binaries with old
libraries. Making the links when things are known to be 'safe' is a
nice optimization, but a copy of all the binaries is only 30MB, so
saving the copies at the cost of increased support when new symbols
are added and used as part of the bootstrap seems to be unwise.
There may be additional optimizations possible here, especially for
!FreeBSD hosts. However, that's beyond the scope of the problem I'm
trying to fix with make failing mid-way through an installworld across
change r363679. This optimization there caused us to run a new binary
with an old library once a new make was installed due to the symbolic
link. One could just copy make, but then other binaries fail as well,
so rather than play whack-a-mole, I opted to take us back to the old
way. Before r340157 or so we did copies (thogh of a lot fewer
artifacts), and we didn't have issues like this.
Reviewed by: arichards@
Differential Revision: https://reviews.freebsd.org/D25967
llvmorg-10.0.1-rc2-0-g77d76b71d7d.
Also add a few more llvm utilities under WITH_CLANG_EXTRAS:
* llvm-dwp, a utility for merging DWARF 5 Split DWARF .dwo files into
.dwp (DWARF package files)
* llvm-size, a size(1) replacement
* llvm-strings, a strings(1) replacement
MFC after: 3 weeks
* bugpoint.1
* clang.1
* llc.1
* lldb.1
* lli.1
* llvm-ar.1
* llvm-as.1
* llvm-bcanalyzer.1
* llvm-cov.1
* llvm-diff.1
* llvm-dis.1
* llvm-dwarfdump.1
* llvm-extract.1
* llvm-link.1
* llvm-mca.1
* llvm-nm.1
* llvm-pdbutil.1
* llvm-profdata.1
* llvm-symbolizer.1
* llvm-tblgen.1
* opt.1
Add newly generated manpages for:
* llvm-addr2line.1 (this is an alias of llvm-symbolizer)
* llvm-cxxfilt.1
* llvm-objcopy.1
* llvm-ranlib.1 (this is an alias of llvm-ar)
Note that llvm-objdump.1 is an exception, as upstream has both a plain
.1 file, and a .rst variant. These will have to be reconciled upstream
first.
MFC after: 3 days
clang-format is enabled conditional on either WITH_CLANG_EXTRAS or
WITH_CLANG_FORMAT. Some sources in libclang are build conditional on
either rule, and obviously the clang-format binary itself depends on the
rule.
clang-format could still use a manual page.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D25427
libucl comes with a Lua library binding. Build it into flua.
This lets us parse/generate config files in the various formats supported by
libucl with flua. For example, the following script will detect the format of
an object written to stdin as one of UCL config, JSON, or YAML and write it to
stdout as pretty-printed JSON:
local ucl = require('ucl')
local parser = ucl.parser()
parser:parse_string(io.read('*a'))
local obj = parser:get_object()
print(ucl.to_format(obj, 'json'))
Reviewed by: kevans, pstef
Approved by: mmacy (mentor)
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D25009
Prepare support to be able to handle font data in loader, consolidate
data structures to sys/font.h and update vtfontcvt.
vtfontcvt update is about to output set of glyphs in form of C source,
the implementation does allow to output compressed or uncompressed font
bitmaps.
Reviewed by: bcr
Differential Revision: https://reviews.freebsd.org/D24189
This is useful for tracking hardware provided AMSDU frames to see
when we're (a) seeing them, and (b) seeing the split between
intermediary and final frames.
Tested:
* QCA9880 (athp) - AP mode
As of r361857 all BINUTILS options are disabled by default - ports
have been changed to depend on binutils if they require GNU as, and
all base system assembly files have been switched to use Clang's
integrated assembler.
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
The ice(4) driver is the driver for the Intel E8xx series Ethernet
controllers; currently with codenames Columbiaville and
Columbia Park.
These new controllers support 100G speeds, as well as introducing
more queues, better virtualization support, and more offload
capabilities. Future work will enable virtual functions (like
in ixl(4)) and the other functionality outlined above.
For full functionality, the kernel should be compiled with
"device ice_ddp" like in the amd64 NOTES file, and/or
ice_ddp_load="YES" should be added to /boot/loader.conf so that
the DDP package file included in this commit can be downloaded
to the adapter. Otherwise, the adapter will fall back to a single
queue mode with limited functionality.
A man page for this driver will be forthcoming.
MFC after: 1 month
Relnotes: yes
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D21959
- When -z is used, include small buffers from 1 to 32 bytes to test
stream ciphers. Note that while AES-XTS claims to support a block
size of 1 in OpenSSL, it does require a minimum of 1 block of cipher
text as it is not a stream cipher but depends on CTS to pad out the
final partial block.
- Permit multiple AAD sizes to be set via multiple -A options, or via
-z. When -z is set, use small buffers from 0 to 32 bytes followed
by powers of 2 up to 256. When multiple sizes are specified, the
ETA and AEAD algorithms perform the full matrix of AAD sizes by
payload sizes.
- Only warn on unchanged ciphertext instead of erroring. The
currently generated plaintext and key for a couple of AES-CTR tests
with a buffer size of 1 results in ciphertext that matches the
plaintext.
Reviewed by: cem
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D25006
This reapplies logical r360944 and r360946 (reverting r360955), with fixed
copystr() stand-in replacement macro. Eventually the goal is to convert
consumers and kill the macro, but for a first step it helps if the macro is
correct.
Prior commit message:
Unlike the other copy*() functions, it does not serve to copy from one
address space to another or protect against potential faults. It's just
an older incarnation of the now-more-common strlcpy().
Add a coccinelle script to tools/ which can be used to mechanically
convert existing instances where replacement with strlcpy is trivial.
In the two cases which matched, fuse_vfsops.c and union_vfsops.c, the
code was further refactored manually to simplify.
Replace the declaration of copystr() in systm.h with a small macro
wrapper around strlcpy (with correction from brooks@ -- thanks).
Remove N redundant MI implementations of copystr. For MIPS, this
entailed inlining the assembler copystr into the only consumer,
copyinstr, and making the latter a leaf function.
Reviewed by: jhb (earlier version)
Discussed with: brooks (thanks!)
Differential Revision: https://reviews.freebsd.org/D24672
The CU-SeeMe videoconferencing client and associated protocol is at this
point a historical artifact; there is no need to retain support for this
protocol today.
Reviewed by: philip, markj, allanjude
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24790
This is in preparation for me bumping how many size buckets are used
for ath_rate_sample statistics.
* Bump buffer size to 64k
* Don't waste 4 lines per bucket size, condense it to two
* Alternate colours; my logic made everything after the first two just
be black. Oops.
Unlike the other copy*() functions, it does not serve to copy from one
address space to another or protect against potential faults. It's just
an older incarnation of the now-more-common strlcpy().
Add a coccinelle script to tools/ which can be used to mechanically
convert existing instances where replacement with strlcpy is trivial.
In the two cases which matched, fuse_vfsops.c and union_vfsops.c, the
code was further refactored manually to simplify.
Replace the declaration of copystr() in systm.h with a small macro
wrapper around strlcpy.
Remove N redundant MI implementations of copystr. For MIPS, this
entailed inlining the assembler copystr into the only consumer,
copyinstr, and making the latter a leaf function.
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D24672
`metalog.lua` is a script that reads METALOG file created by pkgbase
(make packages) and generates reports about the installed system
and issues.
This was developed as part of Yang's W2020 University of Waterloo co-
operative education term with the FreeBSD Foundation. kevans provided
some initial review; we will iterate on it in the tree.
Submitted by: Yang Wang <2333@outlook.jp>
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24563
Save and restore (also known as suspend and resume) permits a snapshot
to be taken of a guest's state that can later be resumed. In the
current implementation, bhyve(8) creates a UNIX domain socket that is
used by bhyvectl(8) to send a request to save a snapshot (and
optionally exit after the snapshot has been taken). A snapshot
currently consists of two files: the first holds a copy of guest RAM,
and the second file holds other guest state such as vCPU register
values and device model state.
To resume a guest, bhyve(8) must be started with a matching pair of
command line arguments to instantiate the same set of device models as
well as a pointer to the saved snapshot.
While the current implementation is useful for several uses cases, it
has a few limitations. The file format for saving the guest state is
tied to the ABI of internal bhyve structures and is not
self-describing (in that it does not communicate the set of device
models present in the system). In addition, the state saved for some
device models closely matches the internal data structures which might
prove a challenge for compatibility of snapshot files across a range
of bhyve versions. The file format also does not currently support
versioning of individual chunks of state. As a result, the current
file format is not a fixed binary format and future revisions to save
and restore will break binary compatiblity of snapshot files. The
goal is to move to a more flexible format that adds versioning,
etc. and at that point to commit to providing a reasonable level of
compatibility. As a result, the current implementation is not enabled
by default. It can be enabled via the WITH_BHYVE_SNAPSHOT=yes option
for userland builds, and the kernel option BHYVE_SHAPSHOT.
Submitted by: Mihai Tiganus, Flavius Anton, Darius Mihai
Submitted by: Elena Mihailescu, Mihai Carabas, Sergiu Weisz
Relnotes: yes
Sponsored by: University Politehnica of Bucharest
Sponsored by: Matthew Grooms (student scholarships)
Sponsored by: iXsystems
Differential Revision: https://reviews.freebsd.org/D19495
directory.
Add a quick sanity check to objdir before using it. It must start
with /. If there was a make error getting it, report that and continue
with the next target. If there was anything else, bail out.
This option was added as a transition aide when symbol versioning was
first added. It was enabled by default in 2007 and is supported even
by the old GPLv2 binutils. Trying to disable it currently fails to
build in libc and at this point it isn't worth fixing the build.
Reported by: Michael Dexter
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D24637
instead of MK_KERBEROS. The reason for this change is some users
prefer to build FreeBSD WITHOUT_KERBEROS, wanting to retain the
Kerberos rc scripts to start/stop MIT Kerberos or Heimdal from ports.
PR: 197337
Reported by: Adam McDougall <ebay at looksharp.net>
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D24252
Include a temporarily compatibility shim as well for kernels predating
close_range, since closefrom is used in some critical areas.
Reviewed by: markj (previous version), kib
Differential Revision: https://reviews.freebsd.org/D24399
r359461 introduced this nifty script to centralize these things, so add
shm_open.c there to remove a total of one (1) bad example from
Makefile.inc1.
Looked over by: emaste
For head/, this will remain eternally default-on to maintain the status quo.
For stable/ branches, it should be flipped to default-off to maintain the
status quo.
There's value in being able to flip it one way or the other easily on head
or stable branches, whether you want to gain some performance back on head/
(for machines there's little chance you'll actually hit an assertion) or
potentially diagnose a problem with the version of llvm on an older branch.
Currently, stable branches get the CFLAGS+= -ndebug line uncommented; going
forward, they will instead have the default of LLVM_ASSERTIONS flipped.
Reviewed by: dim, emaste, re (gjb)
MFC after: 1 week
MFC note: flip the default of LLVM_ASSERTIONS
Differential Revision: https://reviews.freebsd.org/D24264
It's rather awkward to debug issues with the dependency cleanup hacks
when implemented via make. Add a cleanup shell script and move the
libomp hack there as an initial example.
Reviewed by: brooks
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24228
In-tree gdb is essentially obsolete. We kept it for sparc64 (because
gdb in ports lacked sparc64 support) and as a fallback for crashinfo.
gdb was installed to /libexec on all archs other than sparc64, where the
WITHOUT_GDB_LIBEXEC option was default, with gdb installed to /usr/bin.
With sparc64's retirement WITH_GDB_LIBEXEC became the default for all
architectures, but it was still possible to set it off and install gdb
into /usr/bin.
As the next step in gdb's retirement, remove the option and install gdb
only into /libexec as the crashinfo fallback. We expect users to install
the gdb port or package for debugging. The in-tree gdb lacks support for
a number of supported architectures and does not support contemporary
DWARF debug info.
Reviewed by: jhb (earlier)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D24227
- The linked list of cryptoini structures used in session
initialization is replaced with a new flat structure: struct
crypto_session_params. This session includes a new mode to define
how the other fields should be interpreted. Available modes
include:
- COMPRESS (for compression/decompression)
- CIPHER (for simply encryption/decryption)
- DIGEST (computing and verifying digests)
- AEAD (combined auth and encryption such as AES-GCM and AES-CCM)
- ETA (combined auth and encryption using encrypt-then-authenticate)
Additional modes could be added in the future (e.g. if we wanted to
support TLS MtE for AES-CBC in the kernel we could add a new mode
for that. TLS modes might also affect how AAD is interpreted, etc.)
The flat structure also includes the key lengths and algorithms as
before. However, code doesn't have to walk the linked list and
switch on the algorithm to determine which key is the auth key vs
encryption key. The 'csp_auth_*' fields are always used for auth
keys and settings and 'csp_cipher_*' for cipher. (Compression
algorithms are stored in csp_cipher_alg.)
- Drivers no longer register a list of supported algorithms. This
doesn't quite work when you factor in modes (e.g. a driver might
support both AES-CBC and SHA2-256-HMAC separately but not combined
for ETA). Instead, a new 'crypto_probesession' method has been
added to the kobj interface for symmteric crypto drivers. This
method returns a negative value on success (similar to how
device_probe works) and the crypto framework uses this value to pick
the "best" driver. There are three constants for hardware
(e.g. ccr), accelerated software (e.g. aesni), and plain software
(cryptosoft) that give preference in that order. One effect of this
is that if you request only hardware when creating a new session,
you will no longer get a session using accelerated software.
Another effect is that the default setting to disallow software
crypto via /dev/crypto now disables accelerated software.
Once a driver is chosen, 'crypto_newsession' is invoked as before.
- Crypto operations are now solely described by the flat 'cryptop'
structure. The linked list of descriptors has been removed.
A separate enum has been added to describe the type of data buffer
in use instead of using CRYPTO_F_* flags to make it easier to add
more types in the future if needed (e.g. wired userspace buffers for
zero-copy). It will also make it easier to re-introduce separate
input and output buffers (in-kernel TLS would benefit from this).
Try to make the flags related to IV handling less insane:
- CRYPTO_F_IV_SEPARATE means that the IV is stored in the 'crp_iv'
member of the operation structure. If this flag is not set, the
IV is stored in the data buffer at the 'crp_iv_start' offset.
- CRYPTO_F_IV_GENERATE means that a random IV should be generated
and stored into the data buffer. This cannot be used with
CRYPTO_F_IV_SEPARATE.
If a consumer wants to deal with explicit vs implicit IVs, etc. it
can always generate the IV however it needs and store partial IVs in
the buffer and the full IV/nonce in crp_iv and set
CRYPTO_F_IV_SEPARATE.
The layout of the buffer is now described via fields in cryptop.
crp_aad_start and crp_aad_length define the boundaries of any AAD.
Previously with GCM and CCM you defined an auth crd with this range,
but for ETA your auth crd had to span both the AAD and plaintext
(and they had to be adjacent).
crp_payload_start and crp_payload_length define the boundaries of
the plaintext/ciphertext. Modes that only do a single operation
(COMPRESS, CIPHER, DIGEST) should only use this region and leave the
AAD region empty.
If a digest is present (or should be generated), it's starting
location is marked by crp_digest_start.
Instead of using the CRD_F_ENCRYPT flag to determine the direction
of the operation, cryptop now includes an 'op' field defining the
operation to perform. For digests I've added a new VERIFY digest
mode which assumes a digest is present in the input and fails the
request with EBADMSG if it doesn't match the internally-computed
digest. GCM and CCM already assumed this, and the new AEAD mode
requires this for decryption. The new ETA mode now also requires
this for decryption, so IPsec and GELI no longer do their own
authentication verification. Simple DIGEST operations can also do
this, though there are no in-tree consumers.
To eventually support some refcounting to close races, the session
cookie is now passed to crypto_getop() and clients should no longer
set crp_sesssion directly.
- Assymteric crypto operation structures should be allocated via
crypto_getkreq() and freed via crypto_freekreq(). This permits the
crypto layer to track open asym requests and close races with a
driver trying to unregister while asym requests are in flight.
- crypto_copyback, crypto_copydata, crypto_apply, and
crypto_contiguous_subsegment now accept the 'crp' object as the
first parameter instead of individual members. This makes it easier
to deal with different buffer types in the future as well as
separate input and output buffers. It's also simpler for driver
writers to use.
- bus_dmamap_load_crp() loads a DMA mapping for a crypto buffer.
This understands the various types of buffers so that drivers that
use DMA do not have to be aware of different buffer types.
- Helper routines now exist to build an auth context for HMAC IPAD
and OPAD. This reduces some duplicated work among drivers.
- Key buffers are now treated as const throughout the framework and in
device drivers. However, session key buffers provided when a session
is created are expected to remain alive for the duration of the
session.
- GCM and CCM sessions now only specify a cipher algorithm and a cipher
key. The redundant auth information is not needed or used.
- For cryptosoft, split up the code a bit such that the 'process'
callback now invokes a function pointer in the session. This
function pointer is set based on the mode (in effect) though it
simplifies a few edge cases that would otherwise be in the switch in
'process'.
It does split up GCM vs CCM which I think is more readable even if there
is some duplication.
- I changed /dev/crypto to support GMAC requests using CRYPTO_AES_NIST_GMAC
as an auth algorithm and updated cryptocheck to work with it.
- Combined cipher and auth sessions via /dev/crypto now always use ETA
mode. The COP_F_CIPHER_FIRST flag is now a no-op that is ignored.
This was actually documented as being true in crypto(4) before, but
the code had not implemented this before I added the CIPHER_FIRST
flag.
- I have not yet updated /dev/crypto to be aware of explicit modes for
sessions. I will probably do that at some point in the future as well
as teach it about IV/nonce and tag lengths for AEAD so we can support
all of the NIST KAT tests for GCM and CCM.
- I've split up the exising crypto.9 manpage into several pages
of which many are written from scratch.
- I have converted all drivers and consumers in the tree and verified
that they compile, but I have not tested all of them. I have tested
the following drivers:
- cryptosoft
- aesni (AES only)
- blake2
- ccr
and the following consumers:
- cryptodev
- IPsec
- ktls_ocf
- GELI (lightly)
I have not tested the following:
- ccp
- aesni with sha
- hifn
- kgssapi_krb5
- ubsec
- padlock
- safe
- armv8_crypto (aarch64)
- glxsb (i386)
- sec (ppc)
- cesa (armv7)
- cryptocteon (mips64)
- nlmsec (mips64)
Discussed with: cem
Relnotes: yes
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D23677
Now that LLD 10 is out, and required patches have landed, we are now ready
to finally switch away from the ancient in-tree ld.bfd.
Special thanks to Fangrui Song for many hours of work on getting the
32-bit powerpc lld ready for prime-time.
Reviewed by: emaste (earlier revision), jhibbits
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D24111
Having kyua in the base system will simplify automated testing in CI and
eliminates bootstrapping issues on new platforms.
The build of kyua is controlled by WITH(OUT)_TESTS_SUPPORT.
Reviewed by: emaste
Obtained from: CheriBSD
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D24103
autofs was introduced with FreeBSD 10.1 and is the supported method for
automounting filesystems. As of r296194 the amd man page claimed that it
is deprecated. Remove it from base now; the sysutils/am-utils port is
still available if necessary.
Discussed with: cy
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
It does extremely useful things like execute sendmail and spew dubiously
accurate factoids.
From the feedback, it seems like it is an essential utility in a modern unix
and not at all a useless bikeshed. How do those Linux people live without it?
Reverts r358561.
elfctl is a tool for modifying the NT_FREEBSD_FEATURE_CTL ELF note,
which contains a set of flags for enabling or disabling vulnerability
mitigations and other features.
Reviewed by: csjp, kib
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23910
Now that we no longer have GCC 4.2.1 in the tree and can assume FreeBSD
is being built with a C++11 compiler available, we can use BSDL dtc
unconditionally and retire the GPL dtc.
GPL dtc now has FreeBSD CI support via Cirrus-CI to help ensure it
continues to build/work on FreeBSD and is available in the ports tree
if needed.
The copy of (copyfree licensed) libfdt that we actually use is in
sys/contrib/libfdt so the extra copy under contrib/dtc/libfdt can be
removed along with the rest of the GPL dtc.
Reviewed by: kevans, ian, imp, manu, theraven
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23192
LLVM's libunwind is used on all FreeBSD-supported CPU architectures and
is a required component.
Reviewed by: brooks (earlier)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23123
As described in Warner's email message[1] to the FreeBSD-arch mailing
list we have reached GCC 4.2.1's retirement date. At this time all
supported architectures either use in-tree Clang, or rely on external
toolchain (i.e., a contemporary GCC version from ports).
GCC 4.2.1 was released July 18, 2007 and was imported into FreeBSD later
that year, in r171825. GCC has served us well, but version 4.2.1 is
obsolete and not used by default on any architecture in FreeBSD. It
does not support modern C and does not support arm64 or RISC-V.
Thanks to everyone responsible for maintaining, updating, and testing
GCC in the FreeBSD base system over the years.
So long, and thanks for all the fish.
[1] https://lists.freebsd.org/pipermail/freebsd-arch/2020-January/019823.html
PR: 228919
Reviewed by: brooks, imp
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23124
We've grown to also require libthr and libprivatestd to be explicitly linked
in here, so do this now to fix freebsd-wifi-build.
Submitted by: Pavel Timofeev <timp87 gmail com>
Use of binutils is being incrementally reduced. The specific binutils
are listed in the WITH_BINUTILS and WITHOUT_BINUTILS descriptions; there
is no need to list the specific tools again in the descriptions for the
_BOOTSTRAP options.
MFC after: 1 week
simple_httpd was granted a reprieve from the picobsd removal based on having
some reported user; it turns out this user isn't actually using the version
in base and merging their changes would be difficult at this point, so the
version in base will simply continue to rot. Retire it now, it may make a
comeback to ports with the improved version.
No notice issued because its current visibility has only been for ~3
months, and a notice has been previously issued about picobsd removal.
In order to do so we need to install the msdosfs headers to the bootstrap
sysroot and avoid includes of kernel headers that may not exist on every
host (e.g. sys/lockmgr.h). This change should allow bootstrapping of makefs
on FreeBSD 11+ as well as Linux and macOS.
We also have to avoid using the IO_SYNC macro since that may not be
available. In makefs it is only used to switch between calling
bwrite() and bdwrite() which both call the same function. Therefore we
can simply always call bwrite().
For our CheriBSD builds we always bootstrap makefs by setting
LOCAL_XTOOL_DIRS='lib/libnetbsd usr.sbin/makefs' and use the makefs binary
from the build tree to create a bootable disk image.
Reviewed By: brooks
Differential Revision: https://reviews.freebsd.org/D23201
and the headers. If the user decides to install the system without Casper
support, then the Casper functions are mocked, but they still exist in
the system.
PR: 242971
MFC after: 2 weeks
pc-sysinstall was moved from the base system to ports in r351781.
Submitted by: driesm.michiels gmail com
Differential Revision: https://reviews.freebsd.org/D21647
WITHOUT_BINUTILS and WITHOUT_BINUTILS_BOOTSTRAP previously included
claims about being unable to build if set. Those cautions are no longer
universally true, and most FreeBSD targets can function more or less
without enabling GNU Binutils. Just remove the cautions.
Sponsored by: The FreeBSD Foundation
GNU as 2.17.50 is currently required by amd64 and i386 for at least one
file that cannot be assembled by Clang's integrated assembler (IAS).
Other supported CPU architectures either use Clang IAS for all assembly
files, or rely on external toolchain.
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23180
In the WITHOUT_ descriptions we don't need to mention that ld.bfd is
limited to powerpc. When WITHOUT_BINUTILS is specified ld.bfd is not
installed on any CPU architecture.
All archs except powerpc either use lld or require external toolchain.
powerpc still needs binutils ld to link 32-bit binaries.
Reviewed by: jhibbits
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23107
Describe /usr/bin/cc etc. as links to the compiler, and don't conflate
WITHOUT_CLANG_IS_CC with installing GCC. Leave a reference to WITH_GCC
and WITHOUT_CLANG_IS_CC installing links to GCC, although this will be
removed in ~1.5 months when GCC 4.2.1 is removed from the tree.
Sponsored by: The FreeBSD Foundation
${WORLDTMP}/legacy/usr/libexec will only have libexec/ bits that we've
pushed as bootstrap tools, so this is generally safe to include prior to
PATH. The following are the ramifications of this change:
- BPATH addition gets us at least bootstrap flua in WMAKEENV path for
buildenv, for those earlier systems where it's bootstrapped still
- Reworked the sysent target to just set PATH and let it get worked out in
src.lua.mk or individual sysent makefiles -- this gives us back the
ability to overwrite LUA_CMD and use a different/external lua for these
targets. sysent can also now work cleanly in buildenv.
- tools/build/Makefile will now symlink the host flua into build's host
tools so that the above can work without needing to add the host's
/usr/libexec explicitly into TMPPATH.
Reviewed by: arichardson, brooks, imp (all slightly earlier version)
Differential Revision: https://reviews.freebsd.org/D22464
- Rename 'blkcipher' to 'cipher'. Some of the ciphers being tested
are stream ciphers.
- Rename 'authenc' to 'eta' as it is only testing ETA chained
operations and not other combination modes.
- Add a notion of an OCF session and some helper routines to try to
reduce duplicated code. This also uses a single session for both
encrypt and decrypt operations during a single test.
- Add tests to ensure that AEAD algorithms fail decryption with
EBADMSG when given a corrupted tag.
- Remove the transitional hack for COP_F_CIPHER_FIRST.
- Update block comment to mention plain hashes.
Reviewed by: cem
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D22940
For libssp.so, rebuild stack_protector.c with FORTIFY_SOURCE stubs that just
abort built into it.
For libssp_nonshared.a, steal stack_protector_compat.c from
^/lib/libc/secure and massage it to maintain that __stack_chk_fail_local
is a hidden symbol.
libssp is now built unconditionally regardless of {WITH,WITHOUT}_SSP in the
build environment, and the gcclibs version has been disconnected from the
build in favor of this one.
PR: 242950 (exp-run)
Reviewed by: kib, emaste, pfg, Oliver Pinter (earlier version)
Also discussed with: kan
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22943
This should help people examining src.conf(5) draw the connection between
the HTTPD knobs and the particular implementation we're installing,
simple_httpd.
Reported by: saken658 via GitHub
o Remove All Rights Reserved from my notices
o imp@FreeBSD.org everywhere
o regularize punctiation, eliminate date ranges
o Make sure that it's clear that I don't claim All Rights reserved by listing
All Rights Reserved on same line as other copyright holders (but not
me). Other such holders are also listed last where it's clear.
Summary:
Enable on powerpc64 and in lib/libclang_rt/Makefile change
MACHINE_CPUARCH to MACHINE_ARCH because on powerpc64
MACHINE_ARCH==MACHINE_CPUARCH so the 32-bit library overwrites 64-bit
library during installworld.
This patch doesn't enable any other libclang_rt libraries because they
need to be separately ported.
I have verified that games/julius (which fails on powerpc64 elfv2
without this change because of no libclang_rt profiling library) builds.
Test Plan: Ship it, test on powerpc and powerpcspe
Submitted by: pkubaj
Reviewed by: dim, jhibbits
Differential Revision: https://reviews.freebsd.org/D22425
MFC after: 1 month
X-MFC-With: r353358
flua is bootstrapped as part of the build for those on older
versions/revisions that don't yet have flua installed. Once upgraded past
r354833, "make sysent" will again naturally work as expected.
Reviewed by: brooks
Differential Revision: https://reviews.freebsd.org/D21894
The valectl(4) program is used to manage vale(4) switches.
Add it to the system commands so that it can be used right away.
This program was previously called vale-ctl, and stored in
tools/tools/netmap
Reviewed by: hrs, bcr, lwhsu, kevans
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22146
Add lib/libzstd to _elftoolchain_libs
tools/build/Makefile needs to create the install dir for libzstd
Since this would make the line too long, rework to use a list
in one per line format (easier to add in future)
and dispense with the .for loop
Reviewed by: emaste bapt
Differential Revision: https://reviews.freebsd.org/D220134
rename the WITH_LOADER_VERIEXEC_PASS_MANFIEST description to its correct
name. Also correct a bunch of spelling errors in that description.
MFC after: 3 days
This provides a framework to define a template describing
a set of "variables of interest" and the intended way for
the framework to maintain them (for example the maximum, sum,
t-digest, or a combination thereof). Afterwards the user
code feeds in the raw data, and the framework maintains
these variables inside a user-provided, opaque stats blobs.
The framework also provides a way to selectively extract the
stats from the blobs. The stats(3) framework can be used in
both userspace and the kernel.
See the stats(3) manual page for details.
This will be used by the upcoming TCP statistics gathering code,
https://reviews.freebsd.org/D20655.
The stats(3) framework is disabled by default for now, except
in the NOTES kernel (for QA); it is expected to be enabled
in amd64 GENERIC after a cool down period.
Reviewed by: sef (earlier version)
Obtained from: Netflix
Relnotes: yes
Sponsored by: Klara Inc, Netflix
Differential Revision: https://reviews.freebsd.org/D20477
At least some of the characters in E000-F8FF range are used by Powerline
fonts, and having no attributes for these ranges in UnicodeData.txt
other than "Other, Private Use" it should be safe to mark all of them as
printable. Some actually were before r340491, so this fixes the
regression introduced there as well.
PR: 240911
Reviewed by: bapt
Tested by: Daniel Ponte <amigan@gmail.com>
Differential Revision: https://reviews.freebsd.org/D21850
The one used previously was missing the characters in 0-127 range,
making various tools try to escape them in output.
PR: 235100
Reviewed by: bapt
Tested by: Ting-Wei Lan <lantw44@gmail.com>
Differential Revision: https://reviews.freebsd.org/D21794
This directory is actually needed during make installworld and will prevent
to reinstall a system after make delete-old is done.
PR: 226137
Reported by: rakuco
MFC after: 3 days
picobsd/tinyware has had this compact HTTPD server for a long time, and some
people do use it. Move it out into usr.sbin well in advance of any action
being taken on picobsd.
This has been gated behind an HTTPD option defaulted to *off*, primarily for
two reasons:
1.) This code likely needs a good audit, as it's been living off in picobsd
land for a long time, and
2.) We don't currently ship an httpd and this may not be a welcome surprise.
Reviewed by: eugen
Differential Revision: https://reviews.freebsd.org/D21724
run_early_customize is run as a shell list, not as a subshell, so that the side
effects of setting variables can affect later stages of the build (for better or
worse, it's been like this since it was introduced). It therefore has the side
effect of turning off xtrace always, which limits the usefulness of sh -x
nanobsd.sh. Remember the old setting and only turn off tracing after the command
if tracing was off before. All the other places where we do similar things we use
a subshell, so we don't need to do this.
rm -x was introduced in the FreeBSD 10 time frame. 4 years ago I added a
function to cope with building nanobsd images on hosts as old FreeBSD 7 that
lacked rm -x. The workaround is no longer needed as FreeBSD 9 hasn't been
supported for almost 3 years. Eliminate the wrapper and use rm -x directly
again.
This will allow feature control bits (e.g. for ASLR, PROT_MAX) to be
inspected or modified.
Some clean-up and additional work is likely still required, but we can
iterate on this in the tree.
Submitted by: Bora Özarslan <borako.ozarslan@gmail.com>
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D19290
per thread, so that instead of repeating the same info for all threads
in proc, it would print thread specific info. Also includes thread number
that would match 'info threads' info and can be used as argument for
thread swithcing with 'thread' command.
Those scripts are without copyright and license assignement since their creation
After grabbing information from The various authors and contributors assign
proper license header and copyrights.
This has been reported by yuripv in his work on integrating those in Illumos!
Reported by: yuripv
Discussed with: marino, edwin
MFC after: 3 days
With this last piece in place, make -C /usr/src/release release.iso is
finally able to run in a jail. This was not possible before because
msdosfs cannot be mounted inside a jail.
Submitted by: ryan@ixsystems.com
Reviewed by: emaste@, imp@, gjb@
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D21385
KTLS adds support for in-kernel framing and encryption of Transport
Layer Security (1.0-1.2) data on TCP sockets. KTLS only supports
offload of TLS for transmitted data. Key negotation must still be
performed in userland. Once completed, transmit session keys for a
connection are provided to the kernel via a new TCP_TXTLS_ENABLE
socket option. All subsequent data transmitted on the socket is
placed into TLS frames and encrypted using the supplied keys.
Any data written to a KTLS-enabled socket via write(2), aio_write(2),
or sendfile(2) is assumed to be application data and is encoded in TLS
frames with an application data type. Individual records can be sent
with a custom type (e.g. handshake messages) via sendmsg(2) with a new
control message (TLS_SET_RECORD_TYPE) specifying the record type.
At present, rekeying is not supported though the in-kernel framework
should support rekeying.
KTLS makes use of the recently added unmapped mbufs to store TLS
frames in the socket buffer. Each TLS frame is described by a single
ext_pgs mbuf. The ext_pgs structure contains the header of the TLS
record (and trailer for encrypted records) as well as references to
the associated TLS session.
KTLS supports two primary methods of encrypting TLS frames: software
TLS and ifnet TLS.
Software TLS marks mbufs holding socket data as not ready via
M_NOTREADY similar to sendfile(2) when TLS framing information is
added to an unmapped mbuf in ktls_frame(). ktls_enqueue() is then
called to schedule TLS frames for encryption. In the case of
sendfile_iodone() calls ktls_enqueue() instead of pru_ready() leaving
the mbufs marked M_NOTREADY until encryption is completed. For other
writes (vn_sendfile when pages are available, write(2), etc.), the
PRUS_NOTREADY is set when invoking pru_send() along with invoking
ktls_enqueue().
A pool of worker threads (the "KTLS" kernel process) encrypts TLS
frames queued via ktls_enqueue(). Each TLS frame is temporarily
mapped using the direct map and passed to a software encryption
backend to perform the actual encryption.
(Note: The use of PHYS_TO_DMAP could be replaced with sf_bufs if
someone wished to make this work on architectures without a direct
map.)
KTLS supports pluggable software encryption backends. Internally,
Netflix uses proprietary pure-software backends. This commit includes
a simple backend in a new ktls_ocf.ko module that uses the kernel's
OpenCrypto framework to provide AES-GCM encryption of TLS frames. As
a result, software TLS is now a bit of a misnomer as it can make use
of hardware crypto accelerators.
Once software encryption has finished, the TLS frame mbufs are marked
ready via pru_ready(). At this point, the encrypted data appears as
regular payload to the TCP stack stored in unmapped mbufs.
ifnet TLS permits a NIC to offload the TLS encryption and TCP
segmentation. In this mode, a new send tag type (IF_SND_TAG_TYPE_TLS)
is allocated on the interface a socket is routed over and associated
with a TLS session. TLS records for a TLS session using ifnet TLS are
not marked M_NOTREADY but are passed down the stack unencrypted. The
ip_output_send() and ip6_output_send() helper functions that apply
send tags to outbound IP packets verify that the send tag of the TLS
record matches the outbound interface. If so, the packet is tagged
with the TLS send tag and sent to the interface. The NIC device
driver must recognize packets with the TLS send tag and schedule them
for TLS encryption and TCP segmentation. If the the outbound
interface does not match the interface in the TLS send tag, the packet
is dropped. In addition, a task is scheduled to refresh the TLS send
tag for the TLS session. If a new TLS send tag cannot be allocated,
the connection is dropped. If a new TLS send tag is allocated,
however, subsequent packets will be tagged with the correct TLS send
tag. (This latter case has been tested by configuring both ports of a
Chelsio T6 in a lagg and failing over from one port to another. As
the connections migrated to the new port, new TLS send tags were
allocated for the new port and connections resumed without being
dropped.)
ifnet TLS can be enabled and disabled on supported network interfaces
via new '[-]txtls[46]' options to ifconfig(8). ifnet TLS is supported
across both vlan devices and lagg interfaces using failover, lacp with
flowid enabled, or lacp with flowid enabled.
Applications may request the current KTLS mode of a connection via a
new TCP_TXTLS_MODE socket option. They can also use this socket
option to toggle between software and ifnet TLS modes.
In addition, a testing tool is available in tools/tools/switch_tls.
This is modeled on tcpdrop and uses similar syntax. However, instead
of dropping connections, -s is used to force KTLS connections to
switch to software TLS and -i is used to switch to ifnet TLS.
Various sysctls and counters are available under the kern.ipc.tls
sysctl node. The kern.ipc.tls.enable node must be set to true to
enable KTLS (it is off by default). The use of unmapped mbufs must
also be enabled via kern.ipc.mb_use_ext_pgs to enable KTLS.
KTLS is enabled via the KERN_TLS kernel option.
This patch is the culmination of years of work by several folks
including Scott Long and Randall Stewart for the original design and
implementation; Drew Gallatin for several optimizations including the
use of ext_pgs mbufs, the M_NOTREADY mechanism for TLS records
awaiting software encryption, and pluggable software crypto backends;
and John Baldwin for modifications to support hardware TLS offload.
Reviewed by: gallatin, hselasky, rrs
Obtained from: Netflix
Sponsored by: Netflix, Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D21277
PowerPC64 still needs ld.bfd for 32-bit binaries/libraries.
This will be needed when ELFv2 becomes default, but there is no harm in
committing it already.
Reviewed by: jhibbits
Differential Revision: https://reviews.freebsd.org/D21136
For quite some time kgdb has been internally handling FreeBSD kernel
module state; add-on scripts and tools are not needed. asf(8) served
a similar purpose to this script and was removed in r335222.
PR: 229046
Reported by: jhb
Sponsored by: The FreeBSD Foundation
Save the last callout function pointer (and its argument) executed
on each CPU for inspection by a debugger. Add a ddb `show callout_last`
command to show these pointers. Add a kernel module that I used
for testing that command.
Relocate `ce_migration_cpu` to reduce padding and therefore preserve
the size of `struct callout_cpu` (320 bytes on amd64) despite the
added members.
This should help diagnose reference-after-free bugs where the
callout's mutex has already been freed when `softclock_call_cc`
tries to unlock it.
You might hope that the pointer would still be available, but it
isn't. The argument to that function is on the stack (because
`softclock_call_cc` uses it later), and that might be enough in
some cases, but even then, it's very laborious. A pointer to the
callout is saved right before these newly added fields, but that
callout might have been freed. We still have the pointer to its
associated mutex, and the name within might be enough, but it might
also have been freed.
Reviewed by: markj jhb
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20794
PR/238816 initially addressed updates to usage() however the PR has
morphed into a shopping list of updates to usage() and man pages.
PR: 238816 (I added to the list during discussion)
MFC after: 1 week
pkg now uses /dev/null for some of its operations. NanoBSD's packaging
stuff didn't mount that for the chroot it ran in, so any config that
added packages would see the error:
pkg: Cannot open /dev/null:No such file or directory
when trying to actually add those packages. It's easy enough for
nanobsd to mount /dev and it won't hurt anything that was already
working and may help things that weren't (like this). I moved the
mount/unmount pair to be in the right push/pop order from the
submitted patch.
PR: 238727
Submitted by: mike tancsa
Tested by: Karl Denninger
