Whenn O_TRUNC is set, Opentat ends up calling syscall.Ftruncate, which
needs write access. Make sure write access is not removed when O_TRUNC
and O_APPEND are both set.
Updates #67002.
Change-Id: Iccc470b7be3c62144318d6a707057504f3b74c97
Reviewed-on: https://go-review.googlesource.com/c/go/+/620576
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Change-Id: I351b88276307c8d21e43b5b992b30b64996d129c
Reviewed-on: https://go-review.googlesource.com/c/go/+/620777
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
On ELF, default to "-B gobuildid", so it generates GNU build ID
based on Go buildid by default.
Updates #41004.
Fixes#63934.
Fixes#68652.
Change-Id: I5619dfaa4eeb6575c52922ae1de3430b46e31db6
Reviewed-on: https://go-review.googlesource.com/c/go/+/618601
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Reviewed-by: Than McIntosh <thanm@golang.org>
This is similar to CL 618597, but for GNU build ID on ELF. This
makes it possible to enable "-B gobuildid" by default on ELF.
Updates #41004.
For #63934.
Change-Id: I4e663a27a2f7824bce994c783fe6d9ce8d1a395a
Reviewed-on: https://go-review.googlesource.com/c/go/+/618600
Reviewed-by: Than McIntosh <thanm@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Currently, on Mach-O, the -B UUID setting is only applied in
internal linking mode, whereas in external linking mode the UUID
is always rewritten to a hash of Go build ID. This CL makes it
apply to external linking as well. This makes the behavior
consistent on both linkmodes, and also consistent with the -B
flag's behavior for GNU build ID on ELF.
Add tests.
Updates #68678.
Cq-Include-Trybots: luci.golang.try:gotip-darwin-amd64_14,gotip-darwin-arm64_13
Change-Id: I276a5930e231141440cdba16e8812df28ac4237b
Reviewed-on: https://go-review.googlesource.com/c/go/+/618599
Reviewed-by: Than McIntosh <thanm@golang.org>
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On Mach-O, default to "-B gobuildid", so it generates the UUID
based on Go buildid by default.
Fixes#68678.
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Change-Id: I6c1a6bcafd8370a13174657e05d7d9620a8d4f12
Reviewed-on: https://go-review.googlesource.com/c/go/+/618598
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Than McIntosh <thanm@golang.org>
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With the "-B gobuildid" linker option (which will be the default
on some platforms), the host build ID (GNU build ID, Mach-O UUID)
depends on the Go buildid. If the host build ID is included in the
Go buildid computation, it will lead to convergence problem for
the toolchain binaries. So ignore the host build ID in the buildid
computation.
This CL only handles Mach-O UUID. ELF GNU build ID will be handled
later.
For #68678.
For #63934.
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Change-Id: Ie8ff20402a1c6083246d25dea391140c75be40d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/618597
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Currently the linker has some code handling and manipulating
Mach-O files. Specifically, it augments the debug/macho package
with file offset and length, so the content can be handled or
updated easily with the file.
Move this code to an internal package, so it can be used by other
part of the toolchain, e.g. buildid computation.
For #68678.
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Change-Id: I2311af0a06441b7fd887ca5c6ed9e6fc44670a16
Reviewed-on: https://go-review.googlesource.com/c/go/+/618596
Reviewed-by: Than McIntosh <thanm@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Currently, on Mach-O, the Go linker doesn't generate LC_UUID in
internal linking mode. This causes some macOS system tools unable
to track the binary, as well as in some cases the binary unable
to access local network on macOS 15.
This CL makes the linker start generate LC_UUID. Currently, the
UUID is generated if the -B flag is specified. And we'll make it
generate UUID by default in a later CL. The -B flag is currently
for generating GNU build ID on ELF, which is a similar concept to
Mach-O's UUID. Instead of introducing another flag, we just use
the same flag and the same setting. Specifically, "-B gobuildid"
will generate a UUID based on the Go build ID.
For #68678.
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Change-Id: I90089a78ba144110bf06c1c6836daf2d737ff10a
Reviewed-on: https://go-review.googlesource.com/c/go/+/618595
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ingo Oeser <nightlyone@googlemail.com>
Reviewed-by: Than McIntosh <thanm@golang.org>
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This is a peace-of-mind change to make sure that delayed-zeroed memory
(in the large alloc case) is globally visible from the moment the
allocation is published back to the caller.
The way it's written right now is good enough for the garbage collector
(we already have a publication barrier for a nil span.largeType, so the
GC will ignore the noscan span) but this might matter for user code on
weak memory architectures.
Change-Id: I06ac9b95863074e5f09382629083b19bfa87fdb8
Reviewed-on: https://go-review.googlesource.com/c/go/+/619036
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
Last CL we separated mallocgc into several specialized paths. Let's
split up heapSetType too. This will make the specialized heapSetType
functions inlineable and cut out some branches as well as a function
call.
Microbenchmark results at this point in the stack:
│ before.out │ after-5.out │
│ sec/op │ sec/op vs base │
Malloc8-4 13.52n ± 3% 12.15n ± 2% -10.13% (p=0.002 n=6)
Malloc16-4 21.49n ± 2% 18.32n ± 4% -14.75% (p=0.002 n=6)
MallocTypeInfo8-4 27.12n ± 1% 18.64n ± 2% -31.30% (p=0.002 n=6)
MallocTypeInfo16-4 28.71n ± 3% 21.63n ± 5% -24.65% (p=0.002 n=6)
geomean 21.81n 17.31n -20.64%
Change-Id: I5de9ac5089b9eb49bf563af2a74e6dc564420e05
Reviewed-on: https://go-review.googlesource.com/c/go/+/614795
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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Right now mallocgc is a monster of a function. In real programs, we see
that a substantial amount of time in mallocgc is spent in mallocgc
itself. It's very branch-y, holds a lot of state, and handles quite a few
disparate cases, trying to merge them together.
This change breaks apart mallocgc into separate, leaner functions.
There's some duplication now, but there are a lot of branches that can
be pruned as a result.
There's definitely still more we can do here. heapSetType can be inlined
and broken down for each case, since its internals roughly map to each
case anyway (done in a follow-up CL). We can probably also do more with
the size class lookups, since we know more about the size of the object
in each case than before.
Below are the savings for the full stack up until now.
│ after-3.out │ after-4.out │
│ sec/op │ sec/op vs base │
Malloc8-4 13.32n ± 2% 12.17n ± 1% -8.63% (p=0.002 n=6)
Malloc16-4 21.64n ± 3% 19.38n ± 10% -10.47% (p=0.002 n=6)
MallocTypeInfo8-4 23.15n ± 2% 19.91n ± 2% -14.00% (p=0.002 n=6)
MallocTypeInfo16-4 25.86n ± 4% 22.48n ± 5% -13.11% (p=0.002 n=6)
MallocLargeStruct-4 270.0n ± ∞ ¹
geomean 20.38n 30.97n -11.58%
Change-Id: I681029c0b442f9221c4429950626f06299a5cfe4
Reviewed-on: https://go-review.googlesource.com/c/go/+/614257
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Reviewed-by: Keith Randall <khr@golang.org>
This change breaks out the debug.malloc codepaths into dedicated
functions, both for making mallocgc easier to read, and to reduce the
function's size (currently all that code is inlined and really doesn't
need to be).
This is a microoptimization that on its own changes very little, but
together with other optimizations and a breaking up of the various
malloc paths will matter all together ("death by a thousand cuts").
Change-Id: I30b3ab4a1f349ba85b4a1b5b2c399abcdfe4844f
Reviewed-on: https://go-review.googlesource.com/c/go/+/617879
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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These debug checks are very occasionally helpful, but they do cost real
time. The biggest issue seems to be the bloat of mallocgc due to the
"throw" paths. Overall, after some follow-ups, this change cuts about
1ns off of the mallocgc fast path.
This is a microoptimization that on its own changes very little, but
together with other optimizations and a breaking up of the various
malloc paths will matter all together ("death by a thousand cuts").
Change-Id: I07c4547ad724b9f94281320846677fb558957721
Reviewed-on: https://go-review.googlesource.com/c/go/+/617878
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Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
shouldhelpgc is a very unhelpful name, because it has nothing to do with
assists and solely to do with GC triggering. Name it checkGCTrigger
instead, which is much clearer.
Change-Id: Id38debd424ddb397376c0cea6e74b3fe94002f71
Reviewed-on: https://go-review.googlesource.com/c/go/+/617877
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
This change stops tracking assistG across malloc to reduce number of
slots the compiler must keep track of in mallocgc, which adds to
register pressure. It also makes the call to deductAssistCredit only
happen if the GC is running.
This is a microoptimization that on its own changes very little, but
together with other optimizations and a breaking up of the various
malloc paths will matter all together ("death by a thousand cuts").
Change-Id: I4cfac7f3e8e873ba66ff3b553072737a4707e2c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/617876
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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Auto-Submit: Michael Knyszek <mknyszek@google.com>
This is an allocator microoptimization. There's no reason to check
gcphase in general, since it's mostly for debugging anyway.
writeBarrier.enabled is set in all the same cases here, and we force one
fewer cache line (probably) to be touched during malloc.
Conceptually, it also makes a bit more sense. The allocate-black policy
is partly informed by the write barrier design.
Change-Id: Ia5ff593d64c29cf7f4d1bced3204056566444a98
Reviewed-on: https://go-review.googlesource.com/c/go/+/617875
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
Checking whether the current allocation needs to be profiled is
currently branch-y and weirdly a lot of code. The branches are
generally predictable, but it's a surprising number of instructions.
Part of the problem is that MemProfileRate is just a global that can be
set at any time, so we need to load it and check certain settings
explicitly. In an ideal world, we would just always subtract from
nextSample and have a single branch to take the slow path if we
subtract below zero.
If MemProfileRate were a function, we could trash all the nextSample
values intentionally in each mcache. This would be slow, but
MemProfileRate changes rarely while the malloc hot path is well, hot.
Unfortunate...
Although this ideal world is, AFAICT, impossible, we can still get
close. If we cache the value of MemProfileRate in each mcache, then we
can force malloc to take the slow path whenever MemProfileRate changes.
This does require two additional loads, but crucially, these loads are
independent of everything else in mallocgc. Furthermore, the branch
dependent on those loads is incredibly predictable in practice.
This CL on its own has little-to-no impact on mallocgc. But this
codepath is going to be duplicated in several places in the next CL, so
it'll pay to simplify it. Also, we're very much trying to remedy a
death-by-a-thousand-cuts situation, and malloc is currently still kind
of a monster -- it will not help if mallocgc isn't really streamlined
itself.
Lastly, there's a nice property now that all nextSample values get
immediately re-sampled when MemProfileRate changes.
Change-Id: I6443d0cf9bd7861595584442b675ac1be8ea3455
Reviewed-on: https://go-review.googlesource.com/c/go/+/615815
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Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Fixes#69941
Change-Id: Icc3c88d57c14fa9ca203c693d67f144686fed8cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/621076
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Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
This change brings back a minor optimization lost in the Go 1.22 cycle
wherein the 8-byte pointer-ful span class spans would have the pointer
bitmap written ahead of time in bulk, because there's only one possible
pattern.
│ before │ after │
│ sec/op │ sec/op vs base │
MallocTypeInfo8-4 25.13n ± 1% 23.59n ± 2% -6.15% (p=0.002 n=6)
Change-Id: I135b84bb1d5b7e678b841b56430930bc73c0a038
Reviewed-on: https://go-review.googlesource.com/c/go/+/614256
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@google.com>
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For whatever reason, span.heapBits is kind of slow. It accounts for
about a quarter of the cost of writeHeapBitsSmall, which is absurd. We
get a nice speed improvement for small allocations by eliminating this
call.
│ before │ after │
│ sec/op │ sec/op vs base │
MallocTypeInfo16-4 29.47n ± 1% 27.02n ± 1% -8.31% (p=0.002 n=6)
Change-Id: I6270e26902e5a9254cf1503fac81c3c799c59d6a
Reviewed-on: https://go-review.googlesource.com/c/go/+/614255
Reviewed-by: Keith Randall <khr@golang.org>
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Extendible hashing splits a swisstable map into many swisstables. This
keeps grow operations small.
For #54766.
Cq-Include-Trybots: luci.golang.try:gotip-linux-ppc64_power10,gotip-linux-amd64-longtest-swissmap
Change-Id: Id91f34af9e686bf35eb8882ee479956ece89e821
Reviewed-on: https://go-review.googlesource.com/c/go/+/604936
Reviewed-by: Keith Randall <khr@golang.org>
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Reviewed-by: Keith Randall <khr@google.com>
This allows PCALIGN to be used in the end-to-end assembly
tests without causing an error due to missing file position.
Change-Id: Iadea2875854ffd544a963acd21293dc9840da2d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/620635
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
When the root user belongs to a special user group
(for example, in a mock environment), TestSetuidEtc will fail.
For example: Setegid(1)
want:"Gid: 0 1 0 1"
got:"Gid: 1001 1 1001 1"
Fixes#69921
Change-Id: I74d0a006b7529b1b569120a067eb4d7c4ed2e491
GitHub-Last-Rev: 5724383eb1
GitHub-Pull-Request: golang/go#69922
Reviewed-on: https://go-review.googlesource.com/c/go/+/620775
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Based on the benchmarks in github.com/cockroachlabs/swiss.
For #54766.
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Change-Id: I9ad925d3272c671e21ec04eb2da5ebd8f0fc6a28
Reviewed-on: https://go-review.googlesource.com/c/go/+/596295
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Auto-Submit: Michael Pratt <mpratt@google.com>
src/runtime/testdata/testprogcgo/threadprof.go contains C code with a
variable called nullptr. This conflicts with the nullptr keyword in
the C23 revision of the C standard (showing up as gccgo test build
failures when updating GCC to use C23 by default when building C
code).
Rename that variable to nullpointer to avoid the clash with the
keyword (any other name that's not a keyword would work just as well).
Change-Id: Ida5ef371a3f856c611409884e185c3d5ded8e86c
GitHub-Last-Rev: 2ec464703b
GitHub-Pull-Request: golang/go#69927
Reviewed-on: https://go-review.googlesource.com/c/go/+/620955
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Fixes#69836
Change-Id: Ide243c2aa9c6f9d45976f728f97e32c4fbadb720
Reviewed-on: https://go-review.googlesource.com/c/go/+/619316
Reviewed-by: Ian Lance Taylor <iant@google.com>
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This worsens debugging, but improves performance.
Change-Id: I7f3c0d174823b3de412478f9537adc61ae4c076e
Reviewed-on: https://go-review.googlesource.com/c/go/+/620219
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Reviewed-by: Keith Randall <khr@google.com>
CL 618836 introduces a regression where O_APPEND and O_TRUNC could
not be used together on Windows.
This CL fixes the issue by keeping the write access when O_TRUNC is used
, which is required when overwriting data (as per the file
access rights docs: https://learn.microsoft.com/en-us/windows/win32/fileio/file-access-rights-constants).
Fixes#69902.
Change-Id: I77ec60ca6929124dd4490bdad6c3280c4db3efcb
Reviewed-on: https://go-review.googlesource.com/c/go/+/620575
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
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Reviewed-by: Damien Neil <dneil@google.com>
"time.AppendText" returns error messages that start with the prefix
"time.MarshalText: " which seems confusion.
Now correct the message prefix to "time.AppendText: " and add a test
to prevent regression.
Change-Id: I5742c9c3ed802eb79c65d459910deae4f3652ffd
GitHub-Last-Rev: ce965595c1
GitHub-Pull-Request: golang/go#69914
Reviewed-on: https://go-review.googlesource.com/c/go/+/620597
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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The compiler hasn't emitted indexed export data files since go1.19,
so this code, which is only statically reachable from
go/importer.For("gc") aka importer.Default(), is not dynamically
reachable since those files will not be in indexed format.
Updates #68898
Change-Id: I12ea4e1b88da4fffdc9a07f318b9445a61e0d02b
Reviewed-on: https://go-review.googlesource.com/c/go/+/620135
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Alan Donovan <adonovan@google.com>
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Fixes#69890
Change-Id: I1da4eb76c008679a687f4faa4294fe32b5fc7f42
Reviewed-on: https://go-review.googlesource.com/c/go/+/620236
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This commit fixes the issue where tls testdata recordings made with the
newer version of the prerecorded tls conversation test harness, doesn't
end up capturing the final close notify message. The fix simply ensures
that the tls.Client closes before the recording of the conversation is
closed. The closing of the client connection directly is no longer
needed when updating the recording since it will be closed when the
tls.Client is closed.
Fixesgolang/go#69846
Change-Id: I93898de32abd89659a32ed240df6daea5aeaa7fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/620395
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Refactor TestOpenError to use relative paths in test cases,
in preparation for extending it to test os.Root.
Use a test temporary directory instead of system directory
with presumed-known contents.
Move the testcase type and case definitions inline with the test.
For #67002
Change-Id: Idc53dd9fcecf763d3e4eb3b4643032e3003d7ef4
Reviewed-on: https://go-review.googlesource.com/c/go/+/620157
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Change-Id: I0fccb18b2d5d3f7c86f026c988f90734546f7be0
GitHub-Last-Rev: a72cfe970e
GitHub-Pull-Request: golang/go#69856
Reviewed-on: https://go-review.googlesource.com/c/go/+/619056
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@google.com>
Mkdirat does not close the handle returned by CreateFile, but it should.
Mkdirat has been introduced in this developer cycle, so it is not
necessary to backport this fix to any release branch.
Change-Id: Icddac5ccdc6a142a5be5392a39aba2ae7cc9c69a
Reviewed-on: https://go-review.googlesource.com/c/go/+/620195
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Quim Muntal <quimmuntal@gmail.com>
Use the new SwissTable-based map in internal/runtime/maps as the basis
for the runtime map when GOEXPERIMENT=swissmap.
Integration is complete enough to pass all.bash. Notable missing
features:
* Race integration / concurrent write detection
* Stack-allocated maps
* Specialized "fast" map variants
* Indirect key / elem
For #54766.
Cq-Include-Trybots: luci.golang.try:gotip-linux-ppc64_power10,gotip-linux-amd64-longtest-swissmap
Change-Id: Ie97b656b6d8e05c0403311ae08fef9f51756a639
Reviewed-on: https://go-review.googlesource.com/c/go/+/594596
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
The Ticker Stop and Reset methods don't report a value,
so we don't need to track whether they are interrupting a send.
This includes a test that used to fail about 2% of the time on
my laptop when run under x/tools/cmd/stress.
Change-Id: Ic6d14b344594149dd3c24b37bbe4e42e83f9a9ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/620136
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Change-Id: Id22ad7c92c54bc61f1f1d5544f17208f2f8648aa
GitHub-Last-Rev: 61eee331dc
GitHub-Pull-Request: golang/go#69866
Reviewed-on: https://go-review.googlesource.com/c/go/+/619836
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This allows for more efficient use of memory.
Change-Id: I16f399a25c23b804e55289ca055fa83ea9862f16
GitHub-Last-Rev: 19bb96a7cf
GitHub-Pull-Request: golang/go#69841
Reviewed-on: https://go-review.googlesource.com/c/go/+/618960
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Change-Id: I66199995ca34c92aeb8234b43cb2166f2976c903
Reviewed-on: https://go-review.googlesource.com/c/go/+/619735
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Windows versions of openat and mkdirat,
implemented using NtCreateFile.
For #67002
Change-Id: If43b1c1069733e5c45f7d45a69699fec30187308
Reviewed-on: https://go-review.googlesource.com/c/go/+/619435
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
