Add a wrapper for the kexec_file_load syscall on the architectures that
implement it (amd64, ppc64x, s390x). See
http://man7.org/linux/man-pages/man2/kexec_file_load.2.html
Change-Id: Ie29f871902176610a6ba7ed0a7bcc95c10eb172b
Reviewed-on: https://go-review.googlesource.com/c/140037
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Add a wrapper for the memfd_create syscall on Linux. See
http://man7.org/linux/man-pages/man2/memfd_create.2.html for more
information.
Also add the corresponding MFD_* constants to be used in the flags
argument.
Change-Id: Ib30a007e15575a38ecf204601ffede9c913799b6
Reviewed-on: https://go-review.googlesource.com/135915
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Including linux/stat.h in mkerrors.sh is no longer necessary because the
statx types and constants were added to the glibc headers.
Change-Id: I643c35fd2da76dd2c15015556658d7fa862249c4
Reviewed-on: https://go-review.googlesource.com/129100
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Renameat2 is Linux-specific and allows to pass an additional flags
argument to the renameat syscall. Also add the corresponding RENAME_*
flag mask values.
Change-Id: Ib4baa46fdd0b07ccd0988ac624862ce69d5c3ad5
Reviewed-on: https://go-review.googlesource.com/127763
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This adds the NETNSA constants from net_namespace.h, used for creating
and querying network namespace IDs.
Fixesgolang/go#26330
Change-Id: I786c4c4771be3eddc4fdb830a52e128aa1a2b9fd
Reviewed-on: https://go-review.googlesource.com/124436
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Reviewed-by: Ian Lance Taylor <iant@golang.org>
Change-Id: I280fc3b2cd3402c40f2840d152bac2fa288f48a0
Reviewed-on: https://go-review.googlesource.com/118661
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The code has been regenerated using the updated software versions.
Change-Id: Ic2af968d4d8cbf3ab31e5bca1d6640642eb7115a
Reviewed-on: https://go-review.googlesource.com/118255
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Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Add ErrnoName and SignalName to get errno and signal name strings from
syscall.Errno and syscall.Signal values, respectively.
This repurposes the errors and signals vars (because they are not used
within x/sys/unix currently) and turns them into slices of struct,
containing errno/signal number, name and description. ErrnoName and
SignalName can then be trivially implemented using sort.Search.
Renaming errors to errorList additionaly allows to avoid package aliases
for the errors package.
Fixesgolang/go#25134
Change-Id: Ie195872793f44c437f0f175ccfaa13a2546338c5
Reviewed-on: https://go-review.googlesource.com/110875
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These types and constants are taken from hdreg.h, and will enable
querying and manipulation of block devices on Linux.
Fixesgolang/go#24971
Change-Id: Iafe8f81ba7ab9f1e127743dab6a9fb1912874a5c
Reviewed-on: https://go-review.googlesource.com/108455
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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
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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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To be used e.g. in github.com/mdlayher/vsock
Change-Id: I52148a6e6c53c022c07e2cc8bf7348a96445c17b
Reviewed-on: https://go-review.googlesource.com/76193
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Reviewed-by: Matt Layher <mdlayher@gmail.com>
Update go to 1.9.2 in the Dockerfile used to generate the Linux go files.
The update also changes some zerror definitions: RLIM_INFINITY is
assigned to Rlimit.{Cur,Max} which are both uint64 on all architectures.
PR_SET_PTRACER_ANY is used with Prctl which expects an uintptr.
With the current version, an "constant -1 overflows uint64" error would
result if these constants were used directly without type conversion.
Change-Id: Iefd23a44e983b4fcf210121776531df225014112
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To be used e.g. in
2e60d5b8c8
Change-Id: If79ffec9021dc79375c861a0ddd9dd443adb4692
Reviewed-on: https://go-review.googlesource.com/72375
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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They might be used as special values in struct Timespec. See
http://man7.org/linux/man-pages/man2/utimensat.2.html for details.
Change-Id: I1c2d6d7731ca7f077d033e51ee6421a4f2cfbb89
Reviewed-on: https://go-review.googlesource.com/72376
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This change updates the Linux symbols to correspond to v4.13 of the
kernel and v2.26 of glibc. To get everything building correctly, newer
versions of the build tools are required. Instead of trying to get an
Ubuntu 17.10 docker image working, we just add Artful sources to
/etc/apt/sources.list to get a similar effect.
Now that the kernel UAPI is updated, FS_MAX_KEY_SIZE and fscrypt_key no
longer need to be manually declared, as they are now in the proper
kernel headers.
Change-Id: I5f14c99fd70b43dbb8b44e05f53e4e9f09c9a345
Reviewed-on: https://go-review.googlesource.com/61771
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Generic netlink is a generalized netlink family which enables a series
of different communication channels to be multiplexed on a single
netlink family.
For more information, please see: https://lwn.net/Articles/208755/.
Fixesgolang/go#21682.
Change-Id: I2095150e06471f4a0e1322fba669573aa8f0a9b1
Reviewed-on: https://go-review.googlesource.com/59931
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Taskstats is a netlink-based interface for sending per-task and
per-process statistics from the kernel to userspace.
For more information, please see:
https://www.kernel.org/doc/Documentation/accounting/taskstats.txt.
Fixesgolang/go#21616.
Change-Id: I7d4b8035aa8e993074d61911d9a8c3a3e61c9b2e
Reviewed-on: https://go-review.googlesource.com/59050
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Add the PERF_EVENT_IOC_* constants on Linux which are used to
enable/disable/configure perf events. Also add the PERF_IOC_FLAG_GROUP
constant which might be using as part of the ioct argument. See section
"perf_event ioctl calls" in
http://man7.org/linux/man-pages/man2/perf_event_open.2.html
Change-Id: I92fb8f6ef5cc53711f00db566d8e277cdf1cd607
Reviewed-on: https://go-review.googlesource.com/47770
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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Add support for the eventfd2 syscall on Linux.
Use the eventfd2 syscall instead of eventfd, as the latter does not
provide a flags argument and glibc also maps its eventfd() function to
the eventfd2 syscall, see the Notes section in
http://man7.org/linux/man-pages/man2/eventfd.2.html
Also add the corresponding flags values EFD_CLOEXEC, EFD_NONBLOCK and
EFD_SEMAPHORE.
Change-Id: Ia8c99e68d5966ab5c7ebe7e45423943fd7d8214e
Reviewed-on: https://go-review.googlesource.com/45093
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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This CL adds support for the ADD_KEY, REQUESET_KEY, and KEYCTL syscalls.
These syscalls allow access to the kernel keyring facilities. In C code,
these syscalls are wrapped by the libkeyutils package. See:
http://man7.org/linux/man-pages/man7/keyutils.7.html
The ADD_KEY and REQUEST_KEY calls are fairly straightforward, but the
KEYCTL syscall is a multiplexor for a number of key management
functions. See:
http://man7.org/linux/man-pages/man3/keyctl.3.html
The Go bindings for the KEYCTL functions attempt to replicate what
libkeyutils does. This is done via generated helper functions.
Change-Id: If8c97d4ef5bce14c43dee3e6772ded42dc3c595a
Reviewed-on: https://go-review.googlesource.com/41415
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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This CL adds in the necessary types and constants to support Linux
filesystem encryption. This includes the structs for the keys and
polices as well as the constants for key size and encryption algorithms.
This code also reduces the scope of some of the regexes in mkerrors.sh.
This is to reduce the number of unrelated constants added in with this
change.
Note that due to a bug in the Linux uapi headers, not all of the
necessary constants and structures are declared in linux/fs.h despite
being part of the kernel ABI. This means that some constants and types
had to be manually added in.
The bug has been patched (https://patchwork.kernel.org/patch/9662723),
and the manual additions can be removed when the patch is merged into
the mainline kernel.
Change-Id: Ib508ad99bdf4c0068933ffcf351c52bb359cfcf4
Reviewed-on: https://go-review.googlesource.com/41417
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Right now the process for adding in new constants, errors, or syscalls
for Linux is a pain and unreliable. The scripts are designed to be run
on the target architecture and use the header files installed on the
user's system. This makes it hard to generate files for all the
architectures or to have consistency between users. See golang/go#15282.
This CL fixes this issue by making all of the files for the 11 supported
architectures directly from source checkouts of Linux, glibc, and bluez.
This is done using Docker, the gcc cross-compilers, and qemu emulation.
Previously discussed here:
https://go-review.googlesource.com/c/37589/
A README.md file is also added to explain how all the parts of the build
system work.
In order to get the build working for all the architectures, I made
some changes to the other scripts called from mkall_linux.go:
- Files only used for generating linux code, moved to linux/
- linux/mksysnum.pl supports a specified CC compiler.
- The generated C code in mkerrors.sh changed to avoid a warning
- mkerrors.sh headers changed to fix powerpc64 bug in sys/ioctl.h
- linux/types.go no longer needs to export Ptrace structs in lowercase
Build instructions:
- Host system needs to be x86-64 Linux
- Install Docker (https://docs.docker.com/engine/installation/)
- ./mkall.sh (That's it!!!)
Change-Id: I87067c14442ba12f8d51991349a43a9d73f38ae0
Reviewed-on: https://go-review.googlesource.com/37943
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
These are useful for re-reading partition tables and getting device
sizes.
Fixesgolang/go#19370
Change-Id: Ia8dbe3416a48dbdbceafa0fff0131d71057d97ca
Reviewed-on: https://go-review.googlesource.com/37640
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This CL introduces the Getrandom syscall. Allowing users of
sufficiently new kernels (3.17) to detect when the operating system
lacks enough entropy to generate cryptographic random data. See:
http://man7.org/linux/man-pages/man2/getrandom.2.html
As we have updated the syscall numbers, the Getrandom function can
just be generated normally. The only other change is to mkerrors.sh
to include the GRND_* flags for getrandom from <linux/random.h>.
It is important to note that currently the mkerrors.sh script cannot
actually be run as it has fallen behind the 4.10 kernel. The GRND_*
flags were added manually.
This was originally part of a larger commit that was split up.
See CL: https://go-review.googlesource.com/37570
Change-Id: I464088a9c9f7224abdcdae476b30a4f2f412d9f5
Reviewed-on: https://go-review.googlesource.com/37589
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Fixesgolang/go#16188
Change-Id: I396ccbf6ce14147bc03ecdf180c2657c22b477b4
Reviewed-on: https://go-review.googlesource.com/33392
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Change-Id: I827a97ad2b43f9b33281d0da36fe4cfdf24b928f
Reviewed-on: https://go-review.googlesource.com/23965
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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- mkerrors.sh: Included several termios-related constants that were
missing. Also included definitions of tty-related ioctl numbers for
linux.
- zerrors_linux_*: the files have been generated using
"./mkerrors.sh". After their automatic generation the files have
been manually edited to remove changes that were not due to this
patch.
Change-Id: I0463112542a5c1c41583007003b652375f9ce572
Reviewed-on: https://go-review.googlesource.com/17184
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Go1.4 does not recognize arm64 and ppc64le as valid GOARCH values, so
we need explicit build tags.
Change-Id: I1a886c132ae398d9f92b2c2b33d2a4827bbdb9d4
Reviewed-on: https://go-review.googlesource.com/10083
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Tobias Klauser
Matt Layher
Casey Callendrello
Michael Stapelberg
Joe Richey joerichey@google.com
Maxime de Roucy
Elliot Morrison-Reed
Jess Frazelle
Nick Patavalis
Shenghou Ma
Ian Lance Taylor