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7 Commits
Author SHA1 Message Date
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>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
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>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
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>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-09-06 17:05:28 +00:00
Matt Layher 00dd8d7831 unix: gofmt with Go 1.17 
Change-Id: I867e6e01c803fec1b5db464db0e88dfe5799cd43
Reviewed-on: https://go-review.googlesource.com/c/sys/+/343249
Trust: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
 2021-08-18 15:36:20 +00:00
Kir Kolyshkin 30e4713e60 unix: make Prlimit public 
glibc has a wrapper for it, so why shouldn't we?

Change-Id: I5c6e24c8e567e0198ea679f0be33e2eff056d5ed
Reviewed-on: https://go-review.googlesource.com/c/sys/+/332029
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Michael Knyszek <mknyszek@google.com>
 2021-08-16 03:25:35 +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>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-06-03 12:58:02 +00:00
Ben Hutchings 33663a62ff unix/linux: add ppc system call definitions, for use with gccgo 
Add system call definitions for 32-bit PowerPC (ppc).  These are
expected to be used with gccgo, as gc does not have a suitable code
generator.

These definitions are largely copied from ppc64x, with some 32-bit
specific wrappers copied from arm.

The glibc definitions of epoll_event and sockaddr_un structures need
to be overridden on ppc, similarly to some other architectures.

For golang/go#18031
Fixes golang/go#37443

Change-Id: I061ac2b8fa452dd37c2239a0b09dff2f3e9d50da
GitHub-Last-Rev: aada37a10b99a914cb9efe2abe4ef8f7f112da43
GitHub-Pull-Request: golang/sys#106
Reviewed-on: https://go-review.googlesource.com/c/sys/+/312349
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
 2021-04-21 22:16:51 +00:00