Commit Graph

711 Commits

Author SHA1 Message Date
Russ Cox f229e7031a all: go fix -fix=buildtag std cmd (except for bootstrap deps, vendor)
When these packages are released as part of Go 1.18,
Go 1.16 will no longer be supported, so we can remove
the +build tags in these files.

Ran go fix -fix=buildtag std cmd and then reverted the bootstrapDirs
as defined in src/cmd/dist/buildtool.go, which need to continue
to build with Go 1.4 for now.

Also reverted src/vendor and src/cmd/vendor, which will need
to be updated in their own repos first.

Manual changes in runtime/pprof/mprof_test.go to adjust line numbers.

For #41184.

Change-Id: Ic0f93f7091295b6abc76ed5cd6e6746e1280861e
Reviewed-on: https://go-review.googlesource.com/c/go/+/344955
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-10-28 18:17:57 +00:00
Forest Johnson 53260943ea os: explain ProccessState.Exited() SIGKILL interaction
When a process is forcefully killed (for example, with SIGKILL on unix), its ProccessState.Exited() will return false.

Change-Id: I8cebc8d28f2ba1b687c145f6d941647fc3a10665
GitHub-Last-Rev: 414ae1980f
GitHub-Pull-Request: golang/go#48871
Reviewed-on: https://go-review.googlesource.com/c/go/+/354698
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Alexander Rakoczy <alex@golang.org>
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2021-10-13 15:56:29 +00:00
Tamir Duberstein 3283d1a2f2 os: Simplify size using io.Discard.
Change-Id: Ib7cc86643a3dcae788a94472e54de171e0d655fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/355449
Trust: Michael Pratt <mpratt@google.com>
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
2021-10-12 21:30:45 +00:00
Tobias Klauser 0f52292e72 os: don't use wait6 on netbsd
CL 315281 changed the os package use wait6 on netbsd. This seems to be
causing frequent test failures as reported in #48789. Revert that change
using wait6 on netbsd for now.

Updates #13987
Updates #16028
For #48789

Change-Id: Ieddffc65611c7f449971eaa8ed6f4299a5f742c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/354249
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Bryan C. Mills <bcmills@google.com>
Trust: Benny Siegert <bsiegert@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-10-07 20:02:29 +00:00
Russ Cox 4d8db00641 all: use bytes.Cut, strings.Cut
Many uses of Index/IndexByte/IndexRune/Split/SplitN
can be written more clearly using the new Cut functions.
Do that. Also rewrite to other functions if that's clearer.

For #46336.

Change-Id: I68d024716ace41a57a8bf74455c62279bde0f448
Reviewed-on: https://go-review.googlesource.com/c/go/+/351711
Trust: Russ Cox <rsc@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-10-06 15:53:04 +00:00
Kir Kolyshkin 30faf968b1 os/user: implement go native GroupIds
Currently, GroupIds (a method that returns supplementary group IDs
for a user) is not implemented when cgo is not available, or osusergo
build tag is set, or the underlying OS lacks getgrouplist(3).

This adds a native Go implementation of GroupIds (which parses
/etc/group) for such cases, together with some tests.

This implementation is used:
 - when cgo is not available;
 - when osusergo build tag is set;
 - on AIX (which lacks getgrouplist(3));
 - on Illumos (which only recently added getgrouplist(3)).

This commit moves listgroups_unix.go to cgo_listgroups_unix.go, and adds
listgroups_unix.go which implements the feature.

NOTE the +build equivalent of go:build expression in listgroups_unix.go
is not provided as it is going to be bulky. Go 1.17 already prefers
go:build over +build, and no longer fail if a file contains go:build
without +build, so the absence of +build is not a problem even with Go
1.17, and this code is targeted for Go 1.18.

Updates #14709
Updates #30563

Change-Id: Icc95cda97ee3bcb03ef028b16eab7d3faba9ffab
Reviewed-on: https://go-review.googlesource.com/c/go/+/330753
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2021-09-21 23:11:47 +00:00
Jason A. Donenfeld 14e812bfc5 syscall: do not use handle lists on windows when NoInheritHandles is true
If NoInheritHandles is passed, then we shouldn't attempt to do anything
with handle lists. Otherwise CreateProcess fails with invalid param,
because it's being told both to not inherit handles and to inherit
certain handles.

This commit fixes that by using the same logic for handle lists as it
does for enabling or disabling handle inheritance. It also adds a test
to make sure this doesn't regress again.

Fixes #48040

Change-Id: I507261baeec263091738ab90157a991d917dc92f
Reviewed-on: https://go-review.googlesource.com/c/go/+/350411
Reviewed-by: Patrik Nyblom <pnyb@google.com>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
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2021-09-17 00:31:49 +00:00
Tobias Klauser d13d62c49a os, syscall: remove fallback to pipe syscall on Linux
The minimum required Linux kernel version for Go 1.18 will be changed to
2.6.32, see #45964. The pipe2 syscall was added in 2.6.27, so the
fallback to use the pipe syscall in os.Pipe and syscall.forkExecPipe on
Linux can be removed.

For #45964

Change-Id: I033a534f2b39e9bafc9980c9ce980e92f1e3a136
Reviewed-on: https://go-review.googlesource.com/c/go/+/346789
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2021-09-02 09:24:44 +00:00
Kir Kolyshkin f4cd001b57 os/user: simplify skipping listGroups test
This is not implemented on AIX and Illumos, and we already have a
mechanism to skip the test case -- let's use it.

Change-Id: Idb1cc2d716cf6d0731e93dfc3aa7853b9edec41f
Reviewed-on: https://go-review.googlesource.com/c/go/+/330752
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2021-08-28 18:48:37 +00:00
Kir Kolyshkin 41b99dab0f os/user: don't skip TestLookupGroup if supported
CL 37664 implemented this functionality, yet the tests were skipped.

Introduce and use additional variable groupListImplemented to
distinguish between these cases and enable TestLookupGroup for
supported configurations (which looks like all but plan9).

Change-Id: Iabaa7f08b4551dc67e67bdb6e715f15bb20d6218
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/330751
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
2021-08-25 03:07:54 +00:00
Kir Kolyshkin 5d5e50c3db os/user: simplify test skip for plan9
There's no need to specifically check for runtime.GOOS as there's
already a generic mechanism for that.

Change-Id: I7125443ead456548bd503c5e71cd56e9eb30b446
Reviewed-on: https://go-review.googlesource.com/c/go/+/330750
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
2021-08-22 22:04:02 +00:00
Dmitri Shuralyov 095bb790e1 os/exec: re-enable LookPathTest/16
This failure was confirmed to be due to a bug in prerelease versions
of Windows, and has been fixed by now. Remove the skip for this test.

Fixes #44379.

Change-Id: Idfb92ffd6b9d416d4c78ef3800a5ffdda06c6562
Reviewed-on: https://go-review.googlesource.com/c/go/+/341455
Trust: Dmitri Shuralyov <dmitshur@golang.org>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-08-12 15:58:41 +00:00
Eli Bendersky 0fa3265fe1 os: change example to avoid deprecated function
The IsNotExist function is deprecated; change package example to avoid
it and use the recommended way instead.

Fixes #46976

Change-Id: I3c301d0a89b6bda42184df314ba8418062ca39ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/331692
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-06-30 16:44:19 +00:00
siddharth 222ed1b38a os: enable TestFifoEOF on openbsd
The test successfully runs on currently supported versions (6.8 and
6.9) of openbsd.

Fixes #25877

Change-Id: I2694f08c5596b486453c2ac829f17b8bc455f828
Reviewed-on: https://go-review.googlesource.com/c/go/+/329732
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Trust: Tobias Klauser <tobias.klauser@gmail.com>
2021-06-24 00:14:41 +00:00
Andrew G. Morgan 460900a7b5 os/signal: test with a significantly longer fatal timeout
We've observed some occasional os-arch specific timeouts
in signal.TestSignalTrace(). While the main purpose of a
short timeout is to ensure the passing tests complete
quickly, the unexpected failure path can tolerate waiting
longer (the test is not intended to test how slow or
overloaded the OS is at the time it is run).

Fixes #46736
Change-Id: Ib392fc6ce485a919612784ca88ed76c30f4898e2
Reviewed-on: https://go-review.googlesource.com/c/go/+/329502
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
2021-06-20 11:17:27 +00:00
Jason A. Donenfeld 3a9d906edc os: avoid finalizer race in windows process object
If proc.Release is called concurrently, a handle will be double-freed.

Change-Id: I0c0c32e312e07bc8615e0bf9e9b691214444d8d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/322510
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-06-04 17:21:49 +00:00
Jason A. Donenfeld 105c5b50e0 os: terminate windows processes via handle directly
We already have a handle to the process, so use that for termination,
rather than doing a new lookup based on the PID.

Change-Id: I2958c1817f12f3dd783412baacbf629049f6956a
Reviewed-on: https://go-review.googlesource.com/c/go/+/322509
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-06-04 17:21:40 +00:00
Ian Lance Taylor 3075ffc93e os: deflake TestFdReadRace
The test would hang if the call to Fd set the pipe to be non-blocking
before the Read entered the first read system call. Avoid that problem
by writing data to the pipe to wake up the read.

For #24481
Fixes #44818

Change-Id: I0b798874c7b81e7308a38ebbf657efc4392ffacd
Reviewed-on: https://go-review.googlesource.com/c/go/+/322893
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Damien Neil <dneil@google.com>
2021-05-26 23:33:38 +00:00
Damien Neil a62c08734f src/os: revert accidentally submitted change
Change-Id: Ib34984a6bd0abc76266e8aac96f9f8ad8ae21d17
Reviewed-on: https://go-review.googlesource.com/c/go/+/322894
Trust: Damien Neil <dneil@google.com>
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2021-05-26 22:54:09 +00:00
Damien Neil 1d5298d46a doc/go1.17: document net/... changes
For #44513.
Fixes #46014.
Fixes #46015.
Fixes #46016.
Fixes #46017.

Change-Id: I356483d68d07159281dfe2ea1e49430ddf200973
Reviewed-on: https://go-review.googlesource.com/c/go/+/322891
Trust: Damien Neil <dneil@google.com>
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2021-05-26 22:43:54 +00:00
Ian Lance Taylor 76b2d6afed os: document that StartProcess puts files into blocking mode
Fixes #43894

Change-Id: I2add7b8a4f6ae69a5ef1c48703fde21a4b74307c
Reviewed-on: https://go-review.googlesource.com/c/go/+/321852
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2021-05-21 20:38:43 +00:00
Richard Miller 8c3d217d89 os: skip TestExecutableDeleted on plan9
This test deletes the running executable file, which is not safe
on Plan 9. The test was working by accident prior to commit 02ab8d1,
which must have changed the page reference ordering just enough to
cause a new demand page-in after deletion of the file.

Fixes #45941

Change-Id: Ic13d8032c21cee603e3afc3c5c4da6093fc37bf4
Reviewed-on: https://go-review.googlesource.com/c/go/+/316829
Reviewed-by: David du Colombier <0intro@gmail.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Trust: David du Colombier <0intro@gmail.com>
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2021-05-04 18:47:19 +00:00
Paul E. Murphy da7496d841 os/signal: increase test timeouts on ppc64*/linux
TestSignalTrace can take a bit longer to run on some
ppc64{,le} machines. I was only able to reproduce the
timeout reliably on a POWER8/ppc64le ubuntu 16.04 host.

Bump the timeout to 5 seconds.  This should be more than
sufficient for a test which occasionally takes a bit
longer to run on these builders.

Fixes #45773

Change-Id: I4177bb986561f714aabfa5b0ca44b1c90b1cd94f
Reviewed-on: https://go-review.googlesource.com/c/go/+/315049
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2021-05-04 17:37:39 +00:00
Tobias Klauser 45600bcd61 os, syscall: use wait6 to avoid wait/kill race on netbsd
Follow CL 23967 and CL 24021 which did the same on linux and freebsd,
respectively.

Updates #13987
Updates #16028

Change-Id: I95b13d8ddde4cea1ef4fb7d655f1ad1a219d13aa
Reviewed-on: https://go-review.googlesource.com/c/go/+/315281
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-04 12:44:42 +00:00
Brad Fitzpatrick ed5ebd32b3 os: update some docs to reference fs.ErrFoo instead of os.ErrFoo
Change-Id: I8b771f407028406a6ec9a1f2500c806054961267
Reviewed-on: https://go-review.googlesource.com/c/go/+/313569
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-03 22:01:04 +00:00
Tobias Klauser abb110bf3d os/user: implement (*User).GroupIds on solaris
It seems like getgrouplist is supported since Solaris 11.3 (released in
2016):
https://docs.oracle.com/cd/E86824_01/html/E54766/getgrouplist-3c.html

Use it to implement (*User).GroupIds on solaris, like on other Unix
platforms.

Unfortunately it looks like getgrouplist was added to illumos only
fairly recently, see
f2c438c505

Thus, don't use it on GOOS=illumos for now.

Updates #14709

Change-Id: Ibfcdbfca6b7d1af96630512d08921e5637ca76d4
Reviewed-on: https://go-review.googlesource.com/c/go/+/315278
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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2021-05-02 21:27:08 +00:00
Tobias Klauser b177b2d51e os, syscall: use wait6 to avoid wait/kill race on dragonfly
Follow CL 23967 and CL 24021 which did the same on linux and freebsd,
respectively.

Updates #13987
Updates #16028

Change-Id: Ia30ef8b5cffd8f9eb75c29ee5fe350dac2be6d44
Reviewed-on: https://go-review.googlesource.com/c/go/+/315279
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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2021-05-02 21:26:09 +00:00
Ian Lance Taylor 0d32d9e8a8 os: document that Windows Symlink to missing target creates file symlink
Fixes #39183

Change-Id: Iec4a5a561182ade57dc7dc24247710005d6b9f21
Reviewed-on: https://go-review.googlesource.com/c/go/+/314275
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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2021-05-02 18:22:19 +00:00
Tobias Klauser 88a8a27056 os: don't check non-nil err twice in Symlink on windows
Change-Id: I398d324723025b559fdca783fc334de9be68f2d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/314030
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2021-04-27 15:50:45 +00:00
Egon Elbre 105a6e9518 os: skip TestExecutableDeleted on aix
aix does not support reading deleted executable name.

Change-Id: I955ed2c22bd0693440e2c889a4d3132d0a375c48
Reviewed-on: https://go-review.googlesource.com/c/go/+/312392
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-23 11:33:03 +00:00
Egon Elbre cfe5d79c5c os: depend on Readlink only when necessary
Currently Readlink gets linked into the binary even when Executable is
not needed.

This reduces a simple "os.Stdout.Write([]byte("hello"))" by ~10KiB.

Previously the executable path was read during init time, because
deleting the executable would make "Readlink" return "(deleted)" suffix.
There's probably a slight chance that the init time reading would return
it anyways.

Updates #6853

Change-Id: Ic76190c5b64d9320ceb489cd6a553108614653d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/311790
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2021-04-22 21:03:32 +00:00
Andrew G. Morgan 7e97e4e8cc syscall: syscall.AllThreadsSyscall signal handling fixes
The runtime support for syscall.AllThreadsSyscall() functions had
some corner case deadlock issues when signal handling was in use.
This was observed in at least 3 build test failures on ppc64 and
amd64 architecture CGO_ENABLED=0 builds over the last few months.

The fixes involve more controlled handling of signals while the
AllThreads mechanism is being executed. Further details are
discussed in bug #44193.

The all-threads syscall support is new in go1.16, so earlier
releases are not affected by this bug.

Fixes #44193

Change-Id: I01ba8508a6e1bb2d872751f50da86dd07911a41d
Reviewed-on: https://go-review.googlesource.com/c/go/+/305149
Reviewed-by: Michael Pratt <mpratt@google.com>
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2021-04-21 21:25:26 +00:00
Manlio Perillo 492faaeda8 os/exec: replace os.Setenv with T.Setenv
Updates #45448

Change-Id: I570e9894c4976d0a875388ef9ea4a2aa31b78013
Reviewed-on: https://go-review.googlesource.com/c/go/+/310031
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2021-04-14 19:25:38 +00:00
Brad Fitzpatrick 13a4e8c41c all: simplify the spelling of Linux
The prefix didn't help clarify anything.

Change-Id: I897fd4022ce9df42a548b15714e4b592618ca547
Reviewed-on: https://go-review.googlesource.com/c/go/+/309573
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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Reviewed-by: Filippo Valsorda <filippo@golang.org>
2021-04-13 13:56:21 +00:00
Grace Han 841bc14216 os: restore testErrNotExist's working directory on os.Chdir success
The existing implementation calls os.Chdir expecting the call not to
succeed. This change restores the original working directory in the
case that the call does succeed.

Fixes #45407

Change-Id: I61c57f6858b9a9058226e45e24276c7af8913048
Reviewed-on: https://go-review.googlesource.com/c/go/+/308849
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-04-12 22:19:11 +00:00
Manlio Perillo 424abc8d3b os/signal: replace os.MkdirTemp with T.TempDir
Updates #45402.

Change-Id: I6fe356b51bc825a907f979d9c44432a4d43d1f6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/308996
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2021-04-12 00:45:40 +00:00
Manlio Perillo 4d7d7a4c50 os: replace os.MkdirTemp with T.TempDir
Updates #45402

Change-Id: Ib8e62a13ddff884e4d34b3a0fdc9a10db2b68da6
Reviewed-on: https://go-review.googlesource.com/c/go/+/308109
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2021-04-09 09:01:07 +00:00
Manlio Perillo d67e739989 os/exec: replace os.MkdirTemp with T.TempDir
Updates #45402

Change-Id: Idbd8067759d58bc57c52ede4ddccc98ab0ae18fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/308129
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2021-04-08 21:58:35 +00:00
Charlie Moog a25c584629 os: implement fs.StatFS for os.DirFS
Change-Id: I1d7382bf522aeda7148431b348f6ab9a162be097
Reviewed-on: https://go-review.googlesource.com/c/go/+/304531
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2021-04-06 04:48:09 +00:00
Tobias Klauser 4230a6ebdd os: don't use T.Cleanup in TestRemoveAllLongPath
Revert CL 306290 changes to TestRemoveAllLongPath. This breaks the test
on aix, illumos and solaris. We need to chdir out of startPath before
attempting to remove it.

Updates #45182

Change-Id: Ic14fa1962d6f2cc83238f6fc2c6932fd9a6e52a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/307189
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2021-04-04 20:04:37 +00:00
ianwoolf 776d8d387c os, path/filepath: use T.Cleanup to restore the original working directory
Updates #45182

Change-Id: Iaf3bdcc345c72fa9669fdc99908ada4e89904edd
Reviewed-on: https://go-review.googlesource.com/c/go/+/306290
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2021-04-04 00:01:03 +00:00
Tom Thorogood 9e7bc80b31 os: reuse readdir buffers on unix with a sync.Pool
(*File).readdir allocates a fixed-size 8KiB buffer on unix systems that
cannot be reused. While it accounts for just a single allocation, it's
more than large enough to show up in profiles and make things quite a
bit slower.

Instead of allocating so often, use a sync.Pool to allow these buffers to
be reused. This has a large impact on readdir heavy workloads.

Package os benchmarks:

name            old time/op    new time/op    delta
Readdirname-12    35.6µs ± 5%    18.1µs ± 4%  -49.00%  (p=0.000 n=10+10)
Readdir-12         142µs ± 1%     121µs ± 0%  -14.87%  (p=0.000 n=10+9)
ReadDir-12        44.0µs ± 6%    28.4µs ± 8%  -35.58%  (p=0.000 n=9+10)

name            old alloc/op   new alloc/op   delta
Readdirname-12    14.4kB ± 0%     6.2kB ± 0%  -57.08%  (p=0.000 n=10+10)
Readdir-12        41.6kB ± 0%    33.4kB ± 0%  -19.77%  (p=0.000 n=10+9)
ReadDir-12        21.9kB ± 0%    13.7kB ± 0%  -37.39%  (p=0.000 n=10+10)

name            old allocs/op  new allocs/op  delta
Readdirname-12       131 ± 0%       130 ± 0%   -0.76%  (p=0.000 n=10+10)
Readdir-12           367 ± 0%       366 ± 0%   -0.27%  (p=0.000 n=10+10)
ReadDir-12           249 ± 0%       248 ± 0%   -0.40%  (p=0.000 n=10+10)

A clunky benchmark I threw together that calls filepath.WalkDir on $GOMODCACHE:

name        old time/op    new time/op    delta
WalkDir-12    91.2ms ±19%    48.7ms ± 0%  -46.54%  (p=0.000 n=10+10)

name        old alloc/op   new alloc/op   delta
WalkDir-12    54.0MB ± 0%     7.6MB ± 0%  -85.92%  (p=0.000 n=8+9)

name        old allocs/op  new allocs/op  delta
WalkDir-12      136k ± 0%      130k ± 0%   -4.15%  (p=0.000 n=8+8)

Change-Id: I00e4d48726da0e46c528ab205409afd03127b844
Reviewed-on: https://go-review.googlesource.com/c/go/+/302169
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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2021-04-03 21:06:18 +00:00
Tobias Klauser 2e94401277 os/exec: use testenv.SkipFlaky in TestExtraFilesFDShuffle
Change-Id: Icc1980ea0f6363c667bf91371404a8df6ed6b8ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/303950
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2021-03-24 05:15:53 +00:00
Shuhei Takahashi 4e27aa6cd2 os/exec: simplify TestContextCancel
TestContextCancel is a test that ensures a process is killed soon after
canceling the context, even if Wait is not called (#16222). The test
checks whether the process exited without calling Wait by writing some
data to its stdin.

Currently the test involves two goroutines writing to stdin and reading
from stdout. However the reading goroutine is not very necessary to
detect the process exit.

This patch simplifies the test by connecting the process stdout to
/dev/null.

For #42061

Change-Id: I0447a1c024ee5abb050c627ec3766b731b02181a
Reviewed-on: https://go-review.googlesource.com/c/go/+/303352
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2021-03-23 22:36:59 +00:00
Jason A. Donenfeld b8371d495b runtime: support long paths without fixup on Windows 10 >= 1607
Windows 10 >= 1607 allows CreateFile and friends to use long paths if
bit 0x80 of the PEB's BitField member is set.

In time this means we'll be able to entirely drop our long path hacks,
which have never really worked right (see bugs below). Until that point,
we'll simply have things working well on recent Windows.

Updates #41734.
Updates #21782.
Updates #36375.

Change-Id: I765de6ea4859dd4e4b8ca80af7f337994734118e
Reviewed-on: https://go-review.googlesource.com/c/go/+/291291
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2021-03-23 03:49:17 +00:00
Shuhei Takahashi ba6b8e75ed os/exec: avoid flaky Wait in TestContextCancel
This change just increases the timeout to 1 minute to avoid test
flakiness.

Fixes #42061

Change-Id: Id258488ee8f062cd5e68b68bb5cf11e15fdbb396
Reviewed-on: https://go-review.googlesource.com/c/go/+/303351
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2021-03-22 18:41:13 +00:00
Andrey Bokhanko a98a0a75b4 os/user: make user.LookupGroupId function work for large entries
The existing implementation of user.LookupGroupId function works
incorrectly with very large (>64K symbols) entries in /etc/group file.
This patch fixes this.

Fixes #43636

Change-Id: I453321f1ab15fd4d0002f97fcec7d0789e1e0da5
Reviewed-on: https://go-review.googlesource.com/c/go/+/283601
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2021-03-17 03:08:07 +00:00
Josh Bleecher Snyder 061a6903a2 all: add internal/itoa package
This replaces five implementations scattered across low level packages.
(And I plan to use it in a sixth soon.)
Three of the five were byte-for-byte identical.

Change-Id: I3bbbeeac63723a487986c912b604e10ad1e042f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/301549
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2021-03-14 17:56:50 +00:00
Ian Lance Taylor a08adda12c os/signal: remove comments about SA_RESTART
It's no longer necessary for non-Go signal handlers to use SA_RESTART.

For #20400
Fixes #44761

Change-Id: Ie3c7fecc631a4a2822331754296ea09b308e1391
Reviewed-on: https://go-review.googlesource.com/c/go/+/298269
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2021-03-08 20:41:06 +00:00
Jason A. Donenfeld 2a8df4488e os: mark pipes returned by os.Pipe() as inheritable by default
Now that we don't automatically pass all inheritable handles to new
processes, we can make pipes returned by os.Pipe() inheritable, just
like they are on Unix. This then allows them to be passed through the
SysProcAttr.AdditionalInheritedHandles parameter simply.

Updates #44011.
Fixes #21085.

Change-Id: I8eae329fbc74f9dc7962136fa9aae8fb66879751
Reviewed-on: https://go-review.googlesource.com/c/go/+/288299
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2021-03-01 09:17:40 +00:00