This commit adds linux/s390x support to the unix package. It is
based on the changes made to the syscall package in
https://golang.org/cl/20961/. It also adds mkpost.go which is
used to cleanup the API generated by cgo -godefs.
The biggest departure that is made with the syscall package is
the use of the -fsigned-char flag to force signed chars. We
couldn't do this in the syscall package because of the need to
maintain compatibility with the gccgo implementation of the syscall
package (gccgo has supported s390x for a longer time than the Go
toolchain). The unix package does not have this constraint.
Using the -fsigned-char flag makes the API look more like the one
generated on amd64 and arm64 and also more consistent with itself
(the syscall package represents chars using both int8 and uint8
types, the sys package will only ever use int8). Unfortunately it
also means that applications transitioning from the syscall package
to the unix package will see a different API on s390x which might
be confusing. I think the tradeoff is worth it though.
Change-Id: I40b90c18ed787e74ba7a2ebd004bd6bd1ba6279a
Reviewed-on: https://go-review.googlesource.com/23045
Reviewed-by: Ian Lance Taylor <iant@golang.org>
These constants are used for fadvise() on Linux and were missing from
the ztypes_linux_*.go files.
Including the bluetooth headers is necessary so that cgo can resolve
struct sockaddr_hci.
Fixesgolang/go#15114
Change-Id: I1538b5a7b9b24f910c0520d446b2fa5bd8a09013
Reviewed-on: https://go-review.googlesource.com/21753
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Since Linux 3.11, O_TMPFILE flag can be used in open syscall to create
an unnamed file in a directory. The file occupies space in the
filesystem, and can be given a name using linkat syscall. If the file is
closed without being given a name, its contents are deleted.
See the manpage open(2) in Linux for details.
Exports O_TMPFILE for Linux in 386 and amd64 (other architectures
already had it). Exports Linkat syscall and AT_SYMLINK_FOLLOW (used for
giving a name to the file) for all Linux in all architectures.
Fixesgolang/go#7830.
Change-Id: Ib82e44f405b227e227b9cbf317c2657b32e046f5
Reviewed-on: https://go-review.googlesource.com/21003
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
- types_linux.go: Use the kernel-defined termios structure, *not* the
LIBC-defined one. The LIBC termios structure cannot be safely used
to do tty-related ioctls on all architectures (e.g. ppc64,
ppc64le). The kernel termios structure, and the associated
macros/constants, are defined in: "asm/termbits.h" which is included
by "linux/termios.h". The LIBC termios structure is defined in
"bits/termios.h" which is included by "termios.h". These structures
are *not* the same.
For systems that have both "struct termios" and "struct termios2"
use the latter to define the Termios type. This is ok, since the
"struct termios2" memory layout is compatible with "struct termios"
(with a couple of fields added at the end). This way, type Termios
can be used with both: the "old-style" TCSETS[FW], TCGETS ioctls,
*and* with the new TCSETS[FW]2, TCGETS2 ioctls. The new ioctls allow
configuring arbitrary baudrates.
The new Termios definitions (kernel-compatible) have the same fields
as the old ones (LIBC-derived) so there should be no user-code
compatibility issues.
Change-Id: I3c1484c60f45b28e13404765c01616c33063afd5
Reviewed-on: https://go-review.googlesource.com/17185
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This CL adds the Utimensat syscall and AT_SYMLINK_NOFOLLOW constant.
This is required for setting the access/modification times on symlinks.
In addition, it updates the UtimesNano function to pass 0 as the flags
parameter, to avoid potentially passing junk.
Change-Id: I280645f3f53173628b1e1986bc7a47bac254fcf8
Reviewed-on: https://go-review.googlesource.com/9379
Reviewed-by: Rob Pike <r@golang.org>
Import syscall so that Kill can refer to syscall.Signal. Drop
termios constants from types_linux.go--all other systems get
them from mkerrors.sh.
Fixesgolang/go#8865.
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/152980044
Semi-automatic migration from package syscall to package {plan9,windows,unix}.
No builds attempted yet, but this gets a lot of noise behind us so subsequent
CLs will be more concise and easier to follow.
Subsequent CLs will have semantic content.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/121520043
This CL copies to each package of go.sys the files from syscall it will need.
Different directories have different files, but these:
mkall.sh
str.go
syscall.go
mksyscall.pl
race.go
race0.go
syscall_test.go
are copied to all three.
No changes yet, these are just copies. They are not ready to use yet:
package names are wrong, for starters. But this clean copy will make
it easier to follow the changes as the packages are enabled.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/126960043
