There is currently no function to allow for setting repair options for sockets in repair mode.
There are 4 options catered for in the linux implementation.
TCPOPT_WINDOW
TCPOPT_MAXSEG
TCPOPT_SACK_PERMITTED
TCPOPT_TIMESTAMP
Details of the patch to the kernel and the thinking behind it is here https://lwn.net/Articles/495304
Work done in this commit
Included the tcp options type and length for inclusion in the Docker build
Added TCPOPT to the regular expression in mkerrors.sh. There was only TCP_ previously
Add the new function to syscall_unix.go
I have tested locally and verified each option with ss -i
I am not sure whether to commit tests because I don't know if socket creation is possible on the test runs in the offical pipeline.
I did check for existing tests but didn't see any that created sockets, only one that validated a string option.
Fixesgolang/go#46984
Change-Id: Iade0434c05cebf2fbdfb5f04b2a7b51c8b358423
Reviewed-on: https://go-review.googlesource.com/c/sys/+/332709
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>
ifreq is difficult to use in Go due to the union field in particular. This
situation is made worse due to the need to comply with Go's unsafe.Pointer
rules. This CL generates the raw ifreq type and also adds an ifreqData type
of the same size which is specialized for use with unsafe.Pointer.
We also replace the existing ifreqEthtool (which was not padded to the correct
size) with the new APIs and add a test to verify that IoctlGetEthtoolDrvinfo
functions properly by checking the name of the driver for each network interface.
Future uses of ifreq in package unix can expand upon this type with additional
getter and setter methods to deal with the unsafe casts to and from the union
byte array. We may also consider exporting ifreq and ifreqData if necessary.
Change-Id: Ibf73a10e774b4336815c674bb867bbb7ec1b9c71
Reviewed-on: https://go-review.googlesource.com/c/sys/+/340369
Run-TryBot: Matt Layher <mdlayher@gmail.com>
Trust: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
It would be convenient to have MTD user space consts and structs
in the package.
Checked that the regexes in unix/mkerrors.sh are not too general,
and that all the defined constants in <mtd/mtd-user.h> are included
in the generated code.
Checked that all structs and enums added in unix/linux/types.go
are complete.
Fixesgolang/go#46063
Change-Id: I190ac290f3f32a4f817cc7506df0dddb24d881b8
Reviewed-on: https://go-review.googlesource.com/c/sys/+/318211
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>
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#18031Fixesgolang/go#37443
Change-Id: I061ac2b8fa452dd37c2239a0b09dff2f3e9d50da
GitHub-Last-Rev: aada37a10b
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>
The close_range(2) syscall is available since Linux kernel v5.9,
with additional functionality of CLOSE_RANGE_CLOEXEC since v5.11.
No tests are required since this is a bare syscall.
Change-Id: I410470e3713e2005cc7acf24d1347938fe05ef63
Reviewed-on: https://go-review.googlesource.com/c/sys/+/301409
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
This change adds (most) of the ioctl API for the Linux HIDRAW interface.
Reading and writing non-numbered HID reports is done using the read and
write system calls respectively.
Some of the HIDIOC* request numbers are exported directly while others
are kept unexported. This is because some of the #defines require a len
attribute that doesn't have a specific well defined value.
Wrapper types are added for most of the request numbers as is standard.
No wrapper is added for HIDIOCGRDESCSIZE as it would just be
IoctlGetUint32.
The HIDIOC[GS]FEATURE, HIDIOC[GS]INPUT and HIDIOC[GS]OUTPUT request
numbers, which are required for numbered HID reports, are entirely
ommitted as the len attribute has to be a runtime variable. These could
be added later by doing something like
`HIDIOCGFEATURE(0) | (len << _IOC_SIZESHIFT)`,
with care taken that len doesn't overflow _IOC_XSIZEMASK.
Outdated documentation for the HIDRAW interface is available at:
https://www.kernel.org/doc/Documentation/hid/hidraw.txt.
Change-Id: I2ae5060f0f46150f6fb52959c2e55f50927c1f69
Reviewed-on: https://go-review.googlesource.com/c/sys/+/289169
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>
openat2 is a new syscall added to Linux 5.6. It provides a superset of
openat(2) functionality, extending it with flags telling the kernel how
to resolve the paths.
For more info, see https://lwn.net/Articles/803237/
NOTE that this is a second attempt to add the call; the previous one
(https://golang.org/cl/227280) was reverted
(https://golang.org/cl/227846) due to the test case failure on ARM
(https://golang.org/issue/38357).
This CL has the test case reworked to be less assumptive to the testing
environment. In particular, it first tries if the most simplistic
openat2() call succeeds, and skips the test otherwise. It is done that
way because CI can be under under different kernels and in various
envrionments -- in particular, Docker+seccomp can result in EPERM from a
system call (which is not expected otherwise).
For previous discussions about the test case, see
https://golang.org/cl/227865.
Change-Id: I4276cf13dc29ecbdbdc9c58da0f76270f585a67f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/253057
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
openat2 is a new syscall added to Linux 5.6. It provides a superset
of openat(2) functionality, providing a way to extend it in the future,
and (for now) adding flags telling the kernel how to resolve the path.
For more info on openat2, see https://lwn.net/Articles/803237/
A primitive test case is added to check that Openat2 works as
it should. Tested to skip on kernel 5.5 and pass on 5.6.
Change-Id: Ib8bbd71791762f043200543cecdea16d2fd3c81d
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Reviewed-on: https://go-review.googlesource.com/c/sys/+/227280
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Add constants and types to support IP-encapsulated L2TP/RFC3931
tunnels on Linux systems.
The L2TP subsystem for IP encapsulated tunnels hooks into the inet
kernel code using a specific IP protocol value. In order to handle
this, anyToSockaddr now has to query the socket protocol type using
GetsockoptInt for the AF_INET and AF_INET6 address families.
Although this change is reasonably simple, unit tests have been added
to validate handling of the new types.
Fixesgolang/go#37787
Change-Id: I16ae1e24dcced4ccc6ce6a79a90a5a2f6a560967
GitHub-Last-Rev: ca554ad1b6
GitHub-Pull-Request: golang/sys#60
Reviewed-on: https://go-review.googlesource.com/c/sys/+/223157
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Create Go bindings for the updated fscrypt UAPI from Linux v5.4:
- Various new ioctls. We use the regex FS_IOC_.*ENCRYPTION to match
both the new and existing fscrypt ioctls.
- Various new structures for passing to the ioctls
- Various new constants named like FSCRYPT_*
- FscryptPolicy was renamed to FscryptPolicyV1. (But the old name is
still available for source compatibility.)
- The existing fscrypt-related constants named like FS_* (besides the
ioctls) were renamed to FSCRYPT_*. (But the old names are still
available for source compatibility.)
For reference, see fscrypt.h:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/uapi/linux/fscrypt.h?h=v5.4Fixesgolang/go#35856
Change-Id: I48ddd37cfa7c1e0e7eb227baa6f220c848ddc880
Reviewed-on: https://go-review.googlesource.com/c/sys/+/208898
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
