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22 Commits

Author SHA1 Message Date
Tobias Klauser
bf31f56cad unix: add MemfdSecret on linux/riscv64 
Now that SYS_MEMFD_SECRET is defined on linux/riscv64, CL 398514 can be
reverted to provide MemfdSecret on that platform as well.

Fixes golang/go#51547

Change-Id: I48e3e029fd2a3aeb860d69faf387bc10753759c7
Reviewed-on: https://go-review.googlesource.com/c/sys/+/411376
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
 2022-06-15 21:21:20 +00:00
Eric Lagergren
1e041c57c4 unix: revert MemfdSecret changes to riscv64 
Linux apparently supports the memfd_secret syscall on riscv, but
SYS_MEMFD_SECRET isn't defined by zsysnum_linux_riscv64.go.

Updates #51547

Change-Id: I138ce679bf742a7ff4ce1d5e10db84a00df0e271
Reviewed-on: https://go-review.googlesource.com/c/sys/+/398514
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Bryan Mills <bcmills@google.com>
 2022-04-05 21:05:40 +00:00
Eric Lagergren
b1e9470b6e unix: add MemfdSecret 
Fixes #51547

Change-Id: I07a02e8e6ac8baaa72f1c214621fbaca6a6ed707
Reviewed-on: https://go-review.googlesource.com/c/sys/+/397774
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>
 2022-04-05 05:20:23 +00:00
Tobias Klauser
039c03cc5b unix: add race annotations to Pread and Pwrite 
Follow CL 391954 which changed Pread/Pwrite in package syscall.

For golang/go#51618

Change-Id: Icc587c61f083886bb66ca96717f686f56b398e34
Reviewed-on: https://go-review.googlesource.com/c/sys/+/392794
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2022-03-15 19:43:20 +00:00
Tobias Klauser
b146bcec3b unix: remove accept on Linux 
Same as CL 386415 does for package syscall.

accept is no longer used on Linux since CL 347329 changed Accept to use
accept4 only.

For golang/go#45964

Change-Id: I9f431044c03e7f28c08152390ad71f45eddfe9dd
Reviewed-on: https://go-review.googlesource.com/c/sys/+/386954
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2022-02-22 16:06:53 +00:00
Jason A. Donenfeld
1cf2251ac2 unix: implement ppoll in terms of poll on Linux 
Android's Bionic libc installs a seccomp filter that allows ppoll but
not poll. This has been fine for arm64, where we already implement poll
in terms of ppoll, but not the other architectures, such as amd64, which
runs on Chromebooks, and currently leads to crashes.

This commit implements poll in terms of ppoll on the remaining
architectures and makes this common code, so that everyone uses the more
modern syscall.

Change-Id: Ic01a32b5abe48ab53a2549f592a41561f1684c30
Reviewed-on: https://go-review.googlesource.com/c/sys/+/352310
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2021-09-27 05:27:49 +00:00
Tobias Klauser
437939a702 unix: use dup3 in Dup2 on all Linux platforms 
The minimum required Linux kernel version for Go 1.18 will be changed to
2.6.32, see golang/go#45964. The dup3 syscall was added in 2.6.27, so it
can be used instead of the dup2 syscall which is not implemented on
arm64 and riscv64 or blocked on android.

For golang/go#45964

Change-Id: I9c677db4bae3ce441b258c49580fb9a2cd600436
Reviewed-on: https://go-review.googlesource.com/c/sys/+/350552
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-09-21 06:55:28 +00:00
Tobias Klauser
d61c044b16 unix: implement Pipe using pipe2 syscall on all linux platforms 
Most architectures currently already implement Pipe using the pipe2
syscall. Only 386, amd64, mips{,le}, ppc and sparc64 still use the pipe
syscall. However, some systems (e.g. Android seccomp policies) block
that syscall, see golang/go#40828 for an example.

The pipe2 syscall was added in Linux kernel version 2.6.27. The minimum
required Linux kernel version for Go 1.18 will be changed to 2.6.32
per golang/go#45964 so it is possible to unify the implementation of
Pipe using the pipe2 syscall.

Same as CL 350530 did for package syscall.

For golang/go#45964
Fixes golang/go#40828

Change-Id: I07d84d3ea06a54e37d9ff6b72702fe5d96efef7b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/350549
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-09-17 16:11:53 +00:00
Tobias Klauser
ed5796bab1 unix: implement EpollCreate using EpollCreate1 on all linux platforms 
Most newer architectures (e.g. arm64 or riscv64) don't provide the
epoll_create syscall. Some systems (e.g. Android) block it even if it
were available. In the kernel, the epoll_create syscall is implemented
[1] the same way EpollCreate is implemented in this package for
platforms without the epoll_create syscall. Thus, avoid the separate
wrapper and consistently implement EpollCreate using EpollCreate1.

[1] https://elixir.bootlin.com/linux/v5.15-rc1/source/fs/eventpoll.c#L2006

Change-Id: I8ac11d0de939dafa4b1d189d97d350b9c324c3ab
Reviewed-on: https://go-review.googlesource.com/c/sys/+/349809
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-09-15 08:33:10 +00:00
Tobias Klauser
6f6e22806c unix: implement InotifyInit using InotifyInit1 on all linux platforms 
Most newer architectures (e.g. arm64 or riscv64) don't provide the
inotify_init syscall and some systems (e.g. Android) block it even if it
were available. Internally, the inotify_init syscall is implemented
exactly like inotify_init1 [1], so there is no point in having a
separate wrapper on some platforms.

[1] https://elixir.bootlin.com/linux/v5.14.1/source/fs/notify/inotify/inotify_user.c#L704

Change-Id: Iae69de8e6cad1c6207fc0f521e275d94cdad3ca5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/347869
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-09-06 17:05:28 +00:00
Tom Thorogood
9665404d36 unix: support Linux NFC Subsystem 
This adds the constants and types needed for the Linux NFC Subsystem.
It also adds support for sockaddr_nfc and sockaddr_nfc_llcp to Connect.

The Linux NFC Subsystem is documented in:
https://www.kernel.org/doc/html/latest/networking/nfc.html.

Change-Id: Ic6a79afdba85e9b154ec46f191f27714b4b38a57
Reviewed-on: https://go-review.googlesource.com/c/sys/+/323551
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-06-03 12:58:02 +00:00
Russ Cox
9a76102bfb all: go fmt ./... 
Make all our package sources use Go 1.17 gofmt format
(adding //go:build lines).

Not strictly necessary but will avoid spurious changes
as files are edited.

Part of //go:build change (#41184).
See https://golang.org/design/draft-gobuild

Change-Id: I01667f826428426a39c84717d02efa25fa44553c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/294490
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Russ Cox <rsc@golang.org>
 2021-02-20 05:07:31 +00:00
Tobias Klauser
73548a7a48 unix: consistently use tabs in //sys and //sysnb lines 
There is some inconsistent use of tabs and spaces in the //sys and
//sysnb lines. However, the large majority is using tabs, so use these
consistently.

Also change the regexp in mksyscall*.go to only accept tabs going
forward.

Change-Id: I78944e88b5fec11c1bd1d103cea894bc5109da56
Reviewed-on: https://go-review.googlesource.com/c/sys/+/283596
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-02-17 08:59:31 +00:00
Elias Naur
10377860bb unix: replace blocked dup2 calls with dup3 on Android 
Android O and newer blocks access to the dup2 syscall. Route calls
to Dup2 to Dup3.

Change-Id: I76c0180db260ece4840b8ebf2736fb3f8c7ff9eb
Reviewed-on: https://go-review.googlesource.com/c/sys/+/231277
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2020-05-01 05:29:02 +00:00
Sergey Ivanov
e047566fdf unix: add new setfsuid/setfsgid wrappers 
Added SetfsgidRetGid and SetfsuidRetUid wrappers for corresponding
syscalls, both returning previous gid or uid set.

Fixes golang/go#36649

Change-Id: I95176f4442258ca68db79cf967fbf0bbf0a57acf
Reviewed-on: https://go-review.googlesource.com/c/sys/+/215579
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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 2020-01-22 13:43:26 +00:00
Brad Fitzpatrick
c1edf53553 Revert "unix: fix Setfsuid and Setfsgid return values" 
This reverts commit 94506bca4f.

Reason for revert: breaking API change; I want more discussion before we do this.
 
e.g. it breaks https://github.com/search?utf8=%E2%9C%93&q=unix.Setfsuid+filename%3A*.go&type=Code&ref=advsearch&l=&l= ... like 351481c720/src/LinuxBoot/github.com/u-root/u-root/cmds/core/fusermount/fusermount_linux.go

Change-Id: I474195047f080d0b2c2178578c5f45520af96c53
Reviewed-on: https://go-review.googlesource.com/c/sys/+/215518
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2020-01-20 15:04:07 +00:00
Sergey Ivanov
94506bca4f unix: fix Setfsuid and Setfsgid return values 
setfsuid(2) and setfsgid(2) both return an int value that indicates the
previous fsuid or fsgid set. This change makes unix.Setfsgid() and
unix.Setfsuid() return these values too instead of returning only an
error.

Fixes golang/go#36649

Change-Id: I56cbb49d7485023b6b04f7b95e8f675473241d8c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/215240
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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 2020-01-20 14:57:06 +00:00
andig
f460065e89 unix: add Msghdr.SetIovlen 
Fixes golang/go#34164

Change-Id: I77e634fafe8e573d5d2c65ddae9b0771c9f3e88f
GitHub-Last-Rev: dd25f06f86
GitHub-Pull-Request: golang/sys#42
Reviewed-on: https://go-review.googlesource.com/c/sys/+/194077
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 2019-09-09 08:27:30 +00:00
Tobias Klauser
e844e0132e unix: update Dockerfile to Go 1.12 and Linux 5.0 
Also enable KexecFileLoad on linux/{arm64,riscv64} now that they have
SYS_KEXEC_FILE_LOAD.

Change-Id: I1c52d09a1a617794f2df697e4966c4c24a166611
Reviewed-on: https://go-review.googlesource.com/c/sys/+/164997
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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 2019-03-04 15:46:30 +00:00
Tobias Klauser
e5ecc2a674 unix: use Renameat2 to implement Renameat on linux/riscv64 
On linux/riscv64, the renameat syscall no longer exists and has been
superseded by renameat2. Use Renameat2 to implement Renameat on
linux/riscv64.

Based on a patch by Ryan O'Leary.

Updates golang/go#27532

Change-Id: I7c60c7f824750408265f67397b8ac1fa7226f425
Reviewed-on: https://go-review.googlesource.com/c/157899
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2019-01-16 15:12:25 +00:00
Tobias Klauser
5cd93ef61a unix: use ppoll to implement Pause on linux/{arm64,riscv64} 
Use ppoll instead of re-implementing it using Syscall6(SYS_PPOLL, ...)

Change-Id: I7b3baa00df32dc1fe7ee80755843a492a884938c
Reviewed-on: https://go-review.googlesource.com/c/144171
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 2018-10-24 14:56:15 +00:00
Tobias Klauser
8cf3aee429 unix: add support for linux/riscv64 
Add syscall wrappers, error constants and types for linux/riscv64

Switch docker image to Ubuntu 18.10 in order to get qemu supporting
riscv64. Also set the uname release string for qemu to 4.15 (the first
Linux kernel version with riscv64 support), because otherwise running
the generating C program in mkerrors.sh on a host with an older kernel
would fail with a "FATAL: kernel too old".

Note that linux/riscv64 is currently only usable using gccgo.

Updates golang/go#27532

Change-Id: Ic420f842342418443474cac72d38adff14d1b938
Reviewed-on: https://go-review.googlesource.com/133735
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2018-09-06 13:30:57 +00:00