For #65355
Change-Id: I9168d9a767e3b2ece65ac6dcab6827ab6f6b11bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/560136
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Auto-Submit: Ian Lance Taylor <iant@golang.org>
Change-Id: I0fcb79f471cdb8b464924d9b04c675f120861f67
Reviewed-on: https://go-review.googlesource.com/c/go/+/539835
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
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For #65355
Change-Id: I5fefe30dcb520159de565e61dafc74a740fc8730
Reviewed-on: https://go-review.googlesource.com/c/go/+/559715
Reviewed-by: Michael Pratt <mpratt@google.com>
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Fixes#62254Fixes#48622
Change-Id: Ida598e7fa914c8737fdbc1c813bcd68adb5119c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/542275
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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The comment being removed is no longer true as of CL 494916.
Change-Id: I4975866c58efb5c9c41db3640564ac7233f5840f
Reviewed-on: https://go-review.googlesource.com/c/go/+/542415
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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Found by codespell.
Change-Id: I2ebefbbbc8eacf9bc83051407519fa8fd5e4495f
GitHub-Last-Rev: 9cc550f3db
GitHub-Pull-Request: golang/go#65346
Reviewed-on: https://go-review.googlesource.com/c/go/+/559095
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
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On Darwin, the ptrace syscall is called in ptrace1, which then be
called in ptrace. This allows ptrace1 be disabled on iOS (by
implementing ptrace differently). But we can also achieve this by
adding a conditional directly in ptrace. This reduces stack usage
with -N -l, while keeping ptrace disabled on iOS.
For #64113.
Change-Id: I89d8e317e77352fffdbb5a25ba21ee9cdf2e1e20
Reviewed-on: https://go-review.googlesource.com/c/go/+/545276
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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CL 520266 added pidfd_send_signal linux syscall numbers to the
syscall package for the sake of a unit test.
As pidfd_send_signal will be used from the os package, let's revert the
changes to syscall package, add the pidfd_send_signal syscall numbers
and the implementation to internal/syscall/unix, and change the above
test to use it.
Updates #51246.
For #62654.
Change-Id: I862174c3c1a64baf1080792bdb3a1c1d1b417bb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/528436
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While working on CL 528798, I found out that sys.PidFD field (added
in CL 520266) is not filled in when CLONE_NEWUSER is used.
This happens because the code assumed that the parent and the child
run in the same memory space. This assumption is right only when
CLONE_VM is used for clone syscall, and the code only sets CLONE_VM
when CLONE_NEWUSER is not used.
Fix this, and add a test case (which fails before the fix).
Updates #51246.
Change-Id: I805203c1369cadd63d769568b132a9ffd92cc184
Reviewed-on: https://go-review.googlesource.com/c/go/+/542698
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os.OpenFile on windows did not use the O_SYNC flag. This meant
that even if the user set O_SYNC, os.OpenFile would ignore it.
This change adds a new flag FILE_FLAG_WRITE_THROUGH, which is
the equivalent of O_SYNC flag on Linux and is documented in
https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfileaFixes#35358
Change-Id: Ib338caed5bb2f215723bfe30a2551a83998d92c9
GitHub-Last-Rev: 82c6275cb4
GitHub-Pull-Request: golang/go#64027
Reviewed-on: https://go-review.googlesource.com/c/go/+/541015
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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The fchmodat2 syscall was added in Linux kernel 6.6. Mirror the
implementation in golang.org/x/sys/unix.Fchmodat (CL 539635) and use
fchmodat2 in Fchmodat if flags are given. It will return ENOSYS on older
kernels (or EINVAL or any other bogus error in some container
implementations).
Also update ztypes_linux_$GOARCH.go for all linux platforms to add
_AT_EMPTY_PATH. It was added to linux/types in CL 407694 but was only
updated for linux/loong64 at that time.
Updates #61636
Change-Id: I863d06e35cd366f1cf99052e9f77c22ab8168b3f
Reviewed-on: https://go-review.googlesource.com/c/go/+/540435
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
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Provide ioctlPtr for all BSD platforms, then use this for BPF.
This reduces darwin specific code, as well as avoiding the use of
an indirect system call on OpenBSD.
Updates #63900
Change-Id: I81f3e74a3149150abe972f106903310e3cf26929
Reviewed-on: https://go-review.googlesource.com/c/go/+/540019
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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Provide fcntlPtr for all BSD platforms, then use this for FcntlFlock.
This reduces darwin and openbsd specific code, as well as avoiding
the use of an indirect system call on OpenBSD.
Updates #63900
Change-Id: I5c701f0d8413fab5477b9e21381395621d1fb6d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/540018
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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Fix the following error introduced by CL 518627:
./mkall.sh: line 370: syntax error near unexpected token `)'
./mkall.sh: line 370: `openbsd_riscv64)'
Change-Id: I044563759bf07c94840f2024734d32a0ad663aab
Reviewed-on: https://go-review.googlesource.com/c/go/+/538935
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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Tests in rlimit_test.go exist to test the behavior of automatically
bumping RLIMIT_NOFILE on Unix implemented in rlimit.go (issue #46279),
with darwin-specific behavior split out into rlimit_darwin.go and
the rest left empty in rlimit_stub.go.
Since the behavior happens only on Unix, it doesn't make sense to test
it on other platforms. Copy rlimit.go's 'unix' build constraint to
rlimit_test.go to accomplish that.
Also simplify the build constraint in rlimit_stub.go while here,
so that its maintenance is easier and it starts to match all
non-darwin Unix GOOS values (previously, 'hurd' happened to be missed).
In particular, this fixes a problem where TestOpenFileLimit was
failing in some environments when testing the wasip1/wasm port.
The RLIMIT_NOFILE bumping behavior isn't implemented there, so
the test was testing the environment and not the Go project.
Updates #46279.
For #61116.
Change-Id: Ic993f9cfc021d4cda4fe3d7fed8e2e180f78a2ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/539435
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
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On openbsd, call getfsstat directly via libc, instead of calling it
via syscall.Syscall.
Updates #63900
Change-Id: Ib4c581160b170e6cc6017c42e959e647d97ac993
Reviewed-on: https://go-review.googlesource.com/c/go/+/538736
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This removes the unused writelen function, which was cleaned up for other
platforms in CL#529035.
Change-Id: I1999dc81276763bdc73d8590c16729447c4e8538
Reviewed-on: https://go-review.googlesource.com/c/go/+/538119
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The sysctl declaration was moved in CL 141639, however the files were
presumably not regenerated. There is no functional change, however
regenerating avoids unrelated noise in future diffs.
Change-Id: Ifb840b5853f3f1c3c88a3f94df21b6f6d3c635d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/538118
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Changes trailing-NUL-counting behavior for abstract addresses
starting with the NUL character to be the same as abstract
addresses starting with the @ character.
For #63579.
Change-Id: I206e4d0d808396998cb7d92a9e26dda854cb1248
GitHub-Last-Rev: 0ff0a9c938
GitHub-Pull-Request: golang/go#63580
Reviewed-on: https://go-review.googlesource.com/c/go/+/535776
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Change-Id: I8740a2a7ebb3045d8daa97bcb0da7f31f6f7b881
Reviewed-on: https://go-review.googlesource.com/c/go/+/531996
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CL 531516 converted origRlimitNofile from an atomic.Value to
atomic.Pointer[Rlimit]. i.e., it changed from storing a value to storing
a pointer.
After storing a pointer to lim, the remainder of this function
immediately modifies it, thus mutating the value pointer to by
origRlimitNofile (and thus defeating the point of origRlimitNofile).
This broke the android-amd64-emu builder because it is (apparently) the
only builder where the original RLIMIT_NOFILE Cur != Max.
TestRlimitRestored is skipped on every other builder.
Change-Id: I12076350eeddfd221823ad651e7e7eca59d2bdcd
Reviewed-on: https://go-review.googlesource.com/c/go/+/532100
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Currently we are bootstrapping with Go 1.20, origRlimitNofile can
be changed to atomic.Pointer[Rlimit].
Change-Id: I00ce9d1a9030bd5dbd34e3dc6c4e38683a87be86
GitHub-Last-Rev: f2ccdb3841
GitHub-Pull-Request: golang/go#63274
Reviewed-on: https://go-review.googlesource.com/c/go/+/531516
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createEnvBlock currently allocates multiple times: at least one to
convert the slice of strings into a NULL separated slice of bytes, and
then again to encode it as UTF-16. The logic to do so is also quite
complex.
This CL simplifies the logic by allocating only once by encoding the
slice of strings into UTF-16 directly using utf16.AppendRune.
goos: windows
goarch: amd64
pkg: syscall
cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
│ old.txt │ new.txt │
│ sec/op │ sec/op vs base │
CreateEnvBlock-12 37.92µ ± 24% 21.36µ ± 8% -43.66% (p=0.000 n=10)
│ old.txt │ new.txt │
│ B/op │ B/op vs base │
CreateEnvBlock-12 109.12Ki ± 0% 26.62Ki ± 0% -75.60% (p=0.000 n=10)
│ old.txt │ new.txt │
│ allocs/op │ allocs/op vs base │
CreateEnvBlock-12 4.000 ± 0% 1.000 ± 0% -75.00% (p=0.000 n=10)
Change-Id: If35f62c3926b486d5253a9ae23a33b979b2f02c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/531355
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Windows 7 is no longer supported, there is no need to complicate the
code to support inheriting console handles.
Change-Id: Ie9f5cde77a63ea4fa6032bbb7ba5bd48a0989c5b
Reviewed-on: https://go-review.googlesource.com/c/go/+/531235
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Fixes the misuse of "a" vs "an", according to English grammatical
expectations and using https://www.a-or-an.com/
Change-Id: Ic9600dcbb3d843880349729478266c4b9bcf7316
Reviewed-on: https://go-review.googlesource.com/c/go/+/531335
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This is a follow up of CL 528696.
Change-Id: I5b71eabedb12567c4b1b36f7182a3d2b0ed662a5
GitHub-Last-Rev: acaf3ac11c
GitHub-Pull-Request: golang/go#62713
Reviewed-on: https://go-review.googlesource.com/c/go/+/529197
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Also explicitly look up user "nobody" (or "gopher" on the Go builders)
if running as root, instead of hard-coding UID/GID 99.
Fixes#62719.
Change-Id: I9fa8955f2c239804fa775f2478a5274af9330822
Reviewed-on: https://go-review.googlesource.com/c/go/+/529795
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CL 457995 introduced syscall_linux_accept.go which is used on linux/arm
to generate accept and use it in Accept. However, that CL forgot to
include the file in the list of files used with mksyscall.pl to generate
the syscall wrappers. This lead to accept no longer being generated when
re-running mkall.sh on linux/arm.
Change-Id: I7747399afae47a883a7fb079c82e835b90f366cf
Reviewed-on: https://go-review.googlesource.com/c/go/+/529055
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Run 'unconvert -safe -apply' (https://github.com/mdempsky/unconvert)
Change-Id: I24b7cd7d286cddce86431d8470d15c5f3f0d1106
GitHub-Last-Rev: 022e75384c
GitHub-Pull-Request: golang/go#62662
Reviewed-on: https://go-review.googlesource.com/c/go/+/528696
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To get them to pass, implement more fake syscalls.
To make those syscalls easier to reason about, replace
the use of sync.Cond with selectable channels.
Fixes#59718.
Fixes#50216.
Change-Id: I135a6656f5c48f0e5c43dc4d4bcbdb48ee5535d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/526117
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ptracePtr was introduced in CL 470299 for openbsd but it's not used on
this platform.
For #58387
Change-Id: I27901c3f4497e18dc407a9248b66e2691c9a6abb
Reviewed-on: https://go-review.googlesource.com/c/go/+/527535
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Otherwise the setrlimit1 wrapper would be generated using the inexistent
SYS_GETRLIMIT1 syscall number.
This was likely missed in CL 476097.
For #476097
Change-Id: I5cfa2ebacb58aeeaddd3db3639a45cf368fbe0ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/527555
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This is a follow up of CL 526496.
Change-Id: I9f351951bf975e31befd36b9c951d195d2f8f9f7
GitHub-Last-Rev: 4307adafbf
GitHub-Pull-Request: golang/go#62590
Reviewed-on: https://go-review.googlesource.com/c/go/+/527576
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This CL fixes the links to Microsoft documentation in the Go source
code. Some links were broken and some others were outdated.
Change-Id: I4c3bcd3aa3c07a31be1b7f94c25339dcc2e771e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/527556
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CL 513779 added crude skips for tests that couldn't work when run under
'unshare --net --map-root-user' as used by the current iteration of the
no-network check in LUCI. Bryan suggested a more targeted way to detect
when the environment is insufficient, which makes it possible to remove
the builder-specific skip and its slightly incorrect explaining comment.
Updates #30612.
Change-Id: I0de79f44ab94d7f1018384c2e959ca7df3a1b0ae
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-linux-amd64-longtest-race
Reviewed-on: https://go-review.googlesource.com/c/go/+/526835
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
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TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
ptracePtr was introduced in CL 470299 for darwin but it's not used on
this platform. Also, the argument types for addr and data were swapped
in the generated ptrace1Ptr (probably because the change was not
generated but done manually).
For #58387
Change-Id: I429ab0c741e19020d98729c34efabce1d9003f56
Reviewed-on: https://go-review.googlesource.com/c/go/+/526475
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
The SysProcAttr is OS-specific anyway, so it makes little sense to say
that some fields are Linux-specific (they all are anyway).
While at it, make sure to use complete sentences (add missing periods).
Change-Id: Ic0afe3920c2561fd9a657f4edab21939a8f56d57
Reviewed-on: https://go-review.googlesource.com/c/go/+/525395
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Add PidFD support, so that if the PidFD pointer in SysProcAttr is not
nil, ForkExec (and thus all its users) obtains a pidfd from the kernel
during clone(), and writes the result (or -1, if the functionality
is not supported by the kernel) into *PidFD.
The functionality to get pidfd is implemented for both clone3 and clone.
For the latter, an extra argument to rawVforkSyscall is needed, thus the
change in asm files.
Add a trivial test case checking the obtained pidfd can be used to send
a signal to a process, using pidfd_send_signal. To test clone3 code path,
add a flag available to tests only.
Updates #51246.
Change-Id: I2212b69e1a657163c31b4a6245b076bc495777a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/520266
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Kirill Kolyshkin <kolyshkin@gmail.com>
Use ^ and $ in the -run flag regular expression value when the intention
is to invoke a single named test. This removes the reliance on there not
being another similarly named test to achieve the intended result.
In particular, package syscall has tests named TestUnshareMountNameSpace
and TestUnshareMountNameSpaceChroot that both trigger themselves setting
GO_WANT_HELPER_PROCESS=1 to run alternate code in a helper process. As a
consequence of overlap in their test names, the former was inadvertently
triggering one too many helpers.
Spotted while reviewing CL 525196. Apply the same change in other places
to make it easier for code readers to see that said tests aren't running
extraneous tests. The unlikely cases of -run=TestSomething intentionally
being used to run all tests that have the TestSomething substring in the
name can be better written as -run=^.*TestSomething.*$ or with a comment
so it is clear it wasn't an oversight.
Change-Id: Iba208aba3998acdbf8c6708e5d23ab88938bfc1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/524948
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Kirill Kolyshkin <kolyshkin@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Fixup for CL 520265; of course errors returned from os/exec are wrapped.
While at it, change the order -- it seems more readable this way.
Change-Id: Ifb5d0c113f4fb2b3cc4be922021dbd2a8a886b7b
Reviewed-on: https://go-review.googlesource.com/c/go/+/524959
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This way, the test case is self-contained, and the test output no longer
has useless lines related to TestUseCgroupFDHelper.
Change-Id: I575a03b678c8c08a87353f6dc00c35a90ec561ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/525196
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
The check in prepareCgroupFD tried to find out if clone3 with
CLONE_INTO_CGROUP flag is supported, by supplying arguments in
SysProcAttr that will make ForkExec use clone3 with CLONE_INTO_CGROUP
and fail.
CL 456375 inadvertently broke the above check by adding more errno
values to ignore. As a result, TestUseCgroupFD is always skipped, even
when the test could in fact be run.
Fix by removing the check entirely, instead let's use the functionality
and figure out from the errno if this has failed because of unsupported
syscall, lack of permissions, or other reason.
Change-Id: I108b27b6cfeec390ebd3f161ac39e8597569b666
Reviewed-on: https://go-review.googlesource.com/c/go/+/520265
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Auto-Submit: Ian Lance Taylor <iant@google.com>
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Reviewed-by: Bryan Mills <bcmills@google.com>
TestUnshareMountNameSpaceChroot attempts to build a statically-linked
binary to run in a chroot, and sets CGO_ENABLED=0 in order to do so.
Rather than trying to figure out some other way to coax the linker
into building a static binary, let's just skip the test on Linux
platforms that require external linking (namely android/arm).
This should fix the build failure reported in
https://build.golang.org/log/1ea245a9c2e916c81043db177be76778bab00058.
While we're here, let's also fix the failure logging to make the text
readable!
Updates #46330.
Change-Id: I4fa07640ce012ac141bf4698bc3215a7f146062c
Reviewed-on: https://go-review.googlesource.com/c/go/+/522182
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Add syscall support for the openbsd/ppc64 port.
Updates #56001
Change-Id: I695c5c296e90645515de0c8f89f1bc57e976679d
Reviewed-on: https://go-review.googlesource.com/c/go/+/475636
Reviewed-by: Eric Grosse <grosse@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
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