cp: fall back to read/write if copy_file_range fails
Even though copy_file_range has a file-system agnostic version, it still
fails on devfs (perhaps because the file descriptor is non-seekable?) In
that case, fallback to old-fashioned read/write. Fixes
"cp /dev/null /tmp/null"
iwm: fix regression from r365419 (ieee80211_media_change())
In r365419 ieee80211_media_change() callers were updated to not longer
act on the obselete ENETRESET return code.
While in the old days iwm has done a stop/init cycle in these cases,
this was not executed since r193340.
As a consequence simplify iwm code as well by passing ieee80211_media_change()
right to ieee80211_vap_attach() as there is no more need for a local
implementation.
Reported by: Tomoaki AOKI (junchoon dec.sakura.ne.jp)
Tested by: Tomoaki AOKI (junchoon dec.sakura.ne.jp)
MFC after: 3 days
X-MFC: fix is already in stable/12
PR: 248955
This would allow interested parties to do experimental runs with an
environment set appropriately to raise all the warnings throughout the
build; e.g. env WARNS=6 NO_WERROR=yes buildworld.
Not currently touching the numerous instances in ^/tools.
Return values are passed in a0, so read it from there. We also pass a1 through
to userspace, as the ABI allows small structs to be returned in registers
a0/a1. While here read the register values directly from the trapframe rather
than rtval, and remove the now unneeded argument from dtrace_invop().
Set fbtp_roffset so that we get the correct return location in arg0.
memfd_create: simplify HUGETLB support a little bit
This also fixes a minor issue that was missed in the initial review; the
layout of the MFD_HUGE_* flags is actually not 1:1 bit:flag -- it instead
borrowed the Linux convention of how this is laid out since it was
originally implemented on Linux, the top 6 bits represent the shift required
for the requested page size.
This allows us to remove the flag <-> pgsize mapping table and simplify the
logic just prior to validation of the requested page size.
While we're here, fix two small nits:
- HUGETLB memfd shouldn't exhibit the SHM_GROW_ON_WRITE behavior. We can
only grow largepage shm by appropriately aligned (i.e. requested pagesize)
sizes, so it can't work in the typical/sane fashion. Furthermore, Linux
does the same, so let's be compatible.
- We don't allow MFD_HUGETLB without specifying a pagesize, so no need to
check for that later.
- Assorted bug fixes
- Support for newer versions of the device firmware
- Suspend/resume support
- Support for Lenient Link Mode for E82X devices (e.g. can try to link with
SFP/QSFP modules with bad EEPROMs)
- Adds port-level rx_discards sysctl, similar to ixl(4)'s
This version of the driver is intended to be used with DDP package 1.3.16.0,
which has already been updated in a previous commit.
Fix interaction between largepages and seals/writes.
On write with SHM_GROW_ON_WRITE, use proper truncate.
Do not allow to grow largepage shm if F_SEAL_GROW is set. Note that
shrinks are not supported at all due to unmanaged mappings.
Call to vm_pager_update_writecount() is only valid for swap objects,
skip it for unmanaged largepages.
Largepages cannot support write sealing.
Do not writecnt largepage mappings.
Reported by: kevans
Reviewed by: kevans, markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D26394
crunchgen(8): fix crunched application build with WARNS=6
This was revealed by the rescue build with a patch I'm working on to default
WARNS=6 everywhere. The issues resolved were:
- Missing prototype for _crunched_${ident}_stub in the *_stub.c generated
bits
- Missing prototype for crunched_main
- Incomplete prototype for _crunched_${ident}_stub in the generated parts of
crunched_main
- Literal strings in the stub table must drop const qualifier, unless we
const'ify name
- f field in struct stub didn't have a proper prototype
Most of these issues are minor formalities and easily addressed.
I note that if my patch to eventually raise WARNS for the rescue build
lands, we'll need to bump the __FreeBSD_version requirement for
bootstrapping crunchgen and wipe out the rescue .OBJDIR if it's stale, which
we should be able to detect pretty easily from a couple of the issues that
have been fixed here.
got_sigalrm is a global with external linkage and must therefore have a
previous extern declaration. There's no reason to maintain the status quo
there, so just make it static.
The result var is unused.
This part of the test has not been upstreamed, presumably because it exists
solely for sem_clockwait_np. We should perhaps consider moving it into its
own test file outside of ^/contrib/netbsd-tests, but this can happen later.
MFV r365599: import fix for a libexecinfo warning at higher WARNS
v1.17 of this file included a fix that I just submitted upstream to fix a
warning about prevent_inline with external linkage not having been
previously declared.
r365524 did accidentally invert this check that sets SHM_LARGEPAGE, leading
non-hugetlb memfd as unconfigured largepage shm and thus test failures when
we try to ftruncate or write to them.
dim [Thu, 10 Sep 2020 16:47:12 +0000 (16:47 +0000)]
Follow-up r364753 by only using arm's stdatomic.c implementation, as it
already covers the functions in compiler-rt's atomic.c, leading to
conflicts when linking.
Ensure that the makewhatis symlink is added in the bootstrap-tools stage
We currently set MK_MAN=no in $BSARGS so MK_MAN_UTILS will also be false
which means that the makewhatis symlink will not be created.
This change fixes the build when using both -DBUILD_WITH_STRICT_TMPPATH and
-DBOOTSTRAP_ALL_TOOLS.
Tested by: andrew
Differential Revision: https://reviews.freebsd.org/D16761
Set AlignTrailingComments in the clang-format config
This seems to be fairly common in existing code and often looks better when
adding trailing comments to e.g. enumerators or array initializers.
See D26340 for more context.
Use the correct config names for some .clang-format entries
Those values are enum entries and should use "Never" instead of "false".
clang-format currently accepts false, but it's better to use the correct
syntax in case that changes in the future.
andrew [Thu, 10 Sep 2020 09:42:37 +0000 (09:42 +0000)]
Only manage ofw gpio providers on ofw systems
On arm64 we may boot via ACPI. In this case we will still try to manage the
gpio providers as if we are using FDT. Fix this by checking if the FDT node
is valid before registering a cross reference.
Remove vm_map_create(9) KPI's manpage according to r364302
Submitted by: Ka Ho Ng <khng300@gmail.com>
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26372
* Fewer context switches and data copies
* Mostly preserves a file's sparseness
* On some file systems (currently NFS 4.2) the file system will perform the
copy in an especially efficient way.
There were multiple bugs in the OPAL RTC code which had never been
discovered, as the default configuration of OPAL machines is to
have the BMC / FSP control the RTC.
* Fix calling convention for setting the time -- the variables are passed
directly in CPU registers, not via memory.
* Fix bug in the bcd encoding routines. (from jhibbits)
Tested on POWER9 Talos II (BE) and POWER9 Blackbird (LE).
Reviewed by: jhibbits (in irc)
Sponsored by: Tag1 Consulting, Inc.
Add -z "TOS" option to ping6, to test DSCP/ECN values
ping has the option to add the (deprecated) TOS byte
using the -z option. Adding the same option, with the
same (deprecated) Traffic Class Byte (nowadays actually
DSCP and ECN fields) to ping6 to validate proper QoS
processing in network switches.
During the DCTCP improvements, use of CCF_DELACK was
removed. This change is just to rename the unused flag
bit to prevent use of it, without also re-implementing
the tcp_input and tcp_output interfaces.
Support for userspace non-transparent superpages (largepages).
Created with shm_open2(SHM_LARGEPAGE) and then configured with
FIOSSHMLPGCNF ioctl, largepages posix shared memory objects guarantee
that all userspace mappings of it are served by superpage non-managed
mappings.
Only amd64 for now, both 2M and 1G superpages can be requested, the
later requires CPU feature.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D24652
Update nexthop handling for route addition/deletion in preparation for mpath.
Currently kernel requests deletion for the certain routes with specified gateway,
but this gateway is not actually checked. With multipath routes, internal gateway
checking becomes mandatory. Add the logic performing this check.
Generalise RTF_PINNED routes to the generic route priorities, simplifying the logic.
Add lookup_prefix() function to perform exact match search based on data in @info.
vm_map: Add a map entry kind that can only be clipped at specific boundary.
The entries and their clip boundaries must be aligned on supported
superpages sizes from pagesizes[]. vm_map operations return Mach
error KERN_INVALID_ARGUMENT, which is usually translated to EINVAL, if
it would require clip not at the boundary.
In other words, entries force preserving virtual addresses superpage
properties.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D24652
Add pmap_enter(9) PMAP_ENTER_LARGEPAGE flag and implement it on amd64.
The flag requests entry of non-managed superpage mapping of size
pagesizes[psind] into the page table.
Pmap supports fake wiring of the largepage mappings. Only attributes
of the largepage mapping can be changed by calling pmap_enter(9) over
existing mapping, physical address of the page must be unchanged.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D24652
dim [Wed, 9 Sep 2020 20:48:57 +0000 (20:48 +0000)]
Follow-up r364753 by enabling compiler-rt's atomic implementation only
for clang, as it uses clang specific builtins, and does not compile
correctly with gcc. Note that gcc packages usually come with their own
libatomic, providing these primitives.
dim [Wed, 9 Sep 2020 18:11:04 +0000 (18:11 +0000)]
Merge commit e6bb4c8e7 from llvm git (by Craig Topper):
[X86] SSE4_A should only imply SSE3 not SSSE3 in the frontend.
SSE4_1 and SSE4_2 due imply SSSE3. So I guess I got confused when
switching the code to being table based in D83273.
Fixes PR47464
This should fix builds with -march=amdfam10 emitting SSSE3 instructions
such as pshufb, which lead to programs crashing with SIGILL on such
processors.
getlogin_r is specified by POSIX to to take a size_t len, not int. Fix our
version to do the same, bump the symbol version due to ABI change and
provide compat.
This was reported to break compilation of Ruby 2.8.
Some discussion about the necessity of the ABI compat did take place in the
review. While many 64-bit platforms would likely be passing it in a 64-bit
register and zero-extended and thus, not notice ABI breakage, some do
sign-extend (e.g. mips).
In r354148 the goal was to check THREAD_CAN_SLEEP() only once for the
purpose of epoch_trace() and for calling subsequent panic, but to keep
code fully under INVARIANTS, so don't use bare function call to panic().
However, at the last stage of review a true value slipped in, while
always false was assumed. I checked that in email archive with kib@.
So it turns out that syzkaller hit another crash. It has to do with switching
stacks with a SENT_FIN outstanding. Both rack and bbr will only send a
FIN if all data is ack'd so this must be enforced. Also if the previous stack
sent the FIN we need to make sure in rack that when we manufacture the
"unknown" sends that we include the proper HAS_FIN bits.
Note for BBR we take a simpler approach and just refuse to switch.
Sponsored by: Netflix Inc.
Differential Revision: https://reviews.freebsd.org/D26269
certctl: fix hashed link generation with duplicate subjects
Currently, certctl rehash will just keep clobbering .0 rather than
incrementing the suffix upon encountering a duplicate. Do this, and do it
for blacklisted certs as well.
This also improves the situation with the blacklist to be a little less
flakey, comparing cert fingerprints for all certs with a matching subject
hash in the blacklist to determine if the cert we're looking at can be
installed.
Future work needs to completely revamp the blacklist to align more with how
it's described in PR 246614. In particular, /etc/ssl/blacklisted should go
away to avoid potential confusion -- OpenSSL will not read it, it's
basically certctl internal.
PR: 246614
Reviewed by: Michael Osipov <michael.osipov siemens com>
Tested by: Michael Osipov
With suggestions from: Michael Osipov
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26167
Main changes:
* Vim-style expandtab option
* Provides Turkish translation
* Backspace now deletes \ rather than being escaped
* T during motion commands is now VI-compatible
* Encoding related fixes, such as UTF-8 detection
* Fixed a number of memory management issues
This is being addressed as part of a side-patch I'm working on that builds
all the things with WARNS=6, instead of relying on it being supplied in just
shallow parts of the build with higher-level Makefile.inc.
Provide a prototype for mod_main and annotate the thread function argument
as unused.
libc/resolv: attempt to fix the test under WARNS=6
In a side-change that I'm working on to start defaulting src builds to
WARNS=6 where WARNS isn't otherwise specified, GCC6 (and clang, to a lesser
extent) pointed out a number of issues with the resolv tests:
- Global method variable that gets shadowed in run_tests()
- Signed/unsigned comparison between i in run_tests() and hosts->sl_cur
The shadowed variable looks like it might actually be bogus as written, as
we pass it to RUN_TESTS -> run_tests, but other parts use the global method
instead. This change is mainly geared towards correcting that by removing
the global and plumbing the method through from run_tests -> run into the
new thread.
For the signed/unsigned comparison, there's no compelling reason to not just
switch i/nthreads/nhosts to size_t.
The review also included a change to the load() function that was better
addressed by jhb in r365302.
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.
Add support for user-supplied callbacks into phys pager operations,
providing custom getpages(), haspage(), and populate() methods
implementations. Pager stores user data ptr/val in the object to
provide context.
Add phys_pager_allocate() helper that takes user ops table as one of
the arguments.
Current code for these methods is moved to the 'default' ops table,
assigned automatically when vm_pager_alloc() is used.
Reviewed by: markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D24652
Adjust a couple of printf() lines that deal with dumping out addresses
to cast to uintmax_t.
This allows building a 64-bit libofw for use in things like a future
Petitboot loader for PowerPC64, and other FDT platforms that require
a 64-bit loader binary and want to use forth.
Don't return errors from the cryptodev_process() method.
The cryptodev_process() method should either return 0 if it has
completed a request, or ERESTART to defer the request until later. If
a request encounters an error, the error should be reported via
crp_etype before completing the request via crypto_done().
Fix a few more drivers noticed by asomers@ similar to the fix in
r365389. This is an old bug, but went unnoticed since crypto requests
did not start failing as a normal part of operation until digest
verification was introduced which can fail requests with EBADMSG.
eugen [Tue, 8 Sep 2020 22:23:53 +0000 (22:23 +0000)]
geom_part: extend kern.geom.part.check_integrity to work on GPT
There are multiple USB/SATA bridges on the market that unconditionally
cut some LBAs off connected media. This could be a problem
for pre-partitioned drives so GEOM complains and does not create
devices in /dev for slices/partitions preventing access to existing data.
We have kern.geom.part.check_integrity that allows us to correct
partitioning if changed from default 1 to 0 but it works for MBR only.
If backup copy of GPT is unavailable due to decreases number of LBAs,
kernel still does not give access to partitions and prints to dmesg:
GEOM: md0: corrupt or invalid GPT detected.
GEOM: md0: GPT rejected -- may not be recoverable.
This change makes it work for GPT too, so it created partitions in /dev
and prints to dmesg this instead:
GEOM: md0: the secondary GPT table is corrupt or invalid.
GEOM: md0: using the primary only -- recovery suggested.
Then "gpart recover" re-created backup copy of GPT
and allows further manipulations with partitions.
This change is no-op for default configuration having
kern.geom.part.check_integrity=1
Doing it this way eliminates the assumption about homogeneous support
for the feature, since HWCAP values are only set if support is present
on all CPUs.
Reviewed by: tuexen, markj
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26032
Expose some of the new HWCAP features added in r65304. This includes the
addition of elf_hwcap2 into the sysvec, and a separate function to parse
for those features.
This only exposes features which require no further configuration, e.g.
indicating the presence of certain instructions. Larger features (SVE)
will not be advertised until we actually support them. The exact list of
features/extensions this patch exposes is:
- ARMv8.0-DGH
- ARMv8.0-SB
- ARMv8.2-BF16
- ARMv8.2-DCCVADP
- ARMv8.2-I8MM
- ARMv8.4-LRCPC
- ARMv8.5-CondM
- ARMv8.5-FRINT
- ARMv8.5-RNG
- PSTATE.SSBS
While here, annotate elf_hwcap and elf_hwcap2 as __read_frequently, and
move the declarations to the machine/md_var.h header.
Submitted by: mikael@ (D22314 portion)
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26031
Differential Revision: https://reviews.freebsd.org/D22314
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