As spotted by Brad Fitzpatrick, CL 106838 unexported the value field of
Fsid and Sigset_t, but these types would be useless without any exported
fields. Re-export them via an exception in mkpost.go
Change-Id: I30d3c3b81c8c1b6377f8aa55cad816e3486a4395
Reviewed-on: https://go-review.googlesource.com/107415
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This adds a wrapper around perf_event_open, exported constants and
two structs:
- perf_event_attr, used to configure the syscall
- perf_event_mmap_page to coordinate the kernel's mmap ring buffer
Change-Id: Ife7ded8344de9e3eb74441bd51ab9a04c81b4965
Reviewed-on: https://go-review.googlesource.com/105756
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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Move the common Getsockopt* implementations to syscall_unix.go instead
of duplicating them in syscall_bsd.go and syscall_linux.go. This also
makes all of them available on Solaris and adds GetsockoptByte on Linux.
Change-Id: Ibf49b27be46be579e63e3b3e2ebc1504e5228d5f
Reviewed-on: https://go-review.googlesource.com/104695
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
In a Linux user namespace that doesn't have UID 0 mapped, WriteMsgUnix
will return an EINVAL as the uid-valid-in-uns check comes first in the kernel.
Even if in a user and PID namespace, using the wrong PID in Ucred will
always give EPERM.
Change-Id: Ia7452bbf2911c3b9a2aa5d7df1572e8b0790ff38
GitHub-Last-Rev: 341d3f0cba0511411caffd2ac5a6c8dfb7a022ef
GitHub-Pull-Request: golang/sys#7
Reviewed-on: https://go-review.googlesource.com/103857
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On Illumos, TestFchmodat fails with:
--- FAIL: TestFchmodat (0.00s)
syscall_unix_test.go:502: Fchmodat: unexpected error: operation not supported on transport endpoint
Like Linux, Illumos doesn't support flags != 0 in Fchmodat, see
https://illumos.org/man/2/chmod
Adjust TestFchmodat accordingly to handle EOPNOTSUPP on Illumos.
Change-Id: Icd4564497a41c4aa962cd76604b5ca2c7575d96c
Reviewed-on: https://go-review.googlesource.com/101775
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Now that Fchmodat is available on all Unices, move TestFchmodat to
syscall_unix_test.go and adjust it such that Fchmodat with
AT_SYMLINK_NOFOLLOW in flags is tested where supported.
Change-Id: I41ef5b874e36d84ed4866706dbba075c39aa00d4
Reviewed-on: https://go-review.googlesource.com/101615
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Currently the doc string forms one run-on sentence when viewed in
a browser. Add an additional newline so the text is presented in
a browser the same way it is in the source code.
Change-Id: If93e45c5aec9edd195c6bf36cb757c5146368507
Reviewed-on: https://go-review.googlesource.com/101284
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The syscall execve has no wrapper in this library, which it seems like
it should - Ian seemed to concur in CL 72550.
Add a docstring and an example, because I always get confused about
how to invoke the syscall.
Change-Id: I6100bbbf4ace9e3e341bf186a04cc03301da9aea
Reviewed-on: https://go-review.googlesource.com/101282
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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Also use the Ubuntu 17.10 docker image and additionally install bison
which is needed by the glibc build.
The resulting change only consists of a few additional constants.
Exclude the X86_CR3_PCID_NOFLUSH constant on 386 and amd64, though.
Change-Id: I0a9b8959146273ff3b259c17bb616625a9ac8278
Reviewed-on: https://go-review.googlesource.com/96255
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Add rudimentary godoc for all existing Sockaddr* types implementing the
Sockaddr interface.
Change-Id: Ida7d1e8756477b54fc773f4bc978002c3d4a376d
Reviewed-on: https://go-review.googlesource.com/89775
Reviewed-by: Ian Lance Taylor <iant@golang.org>
CL 87555 added the AT_STATX_* constants which are garbled on linux/s390x due
to the replacement regex in mkpost.go being too broad. Adjust the regex to
only match on word boundaries.
Change-Id: I898547fbbbc5d02965e86300e9144fb65207ab33
Reviewed-on: https://go-review.googlesource.com/87876
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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statx(2) allows to get enhanced file status information (not currently
available through the existing stat syscalls), lightweight stat,
heavyweight stat. The Statx_t type used by Statx has consistent field
sizes on all arches (with year-2038-capable timestamps) and is closer to
the BSD implementation of Stat_t.
See http://man7.org/linux/man-pages/man2/statx.2.html for details. The
syscall was added in Linux kernel 4.11.
See https://github.com/tklauser/statx for an example of how this
function and types can be used to report stat(1)-like file status
information.
Change-Id: I9e9642b5b42a393f94fd532453888ce9ba4f0003
Reviewed-on: https://go-review.googlesource.com/87555
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Tobias Klauser