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os, syscall: use pipe2 instead of pipe syscall on OpenBSD

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The pipe2 syscall is part of OpenBSD since version 5.7 and thus exists in
all officially supported versions.

Follows CL 38426 and CL 94035

Change-Id: I8f93ecbc89664241f1b6b0d069e948776941b1d0
Reviewed-on: https://go-review.googlesource.com/97356
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Tobias Klauser 2018-02-27 08:14:53 +01:00 committed by Tobias Klauser
parent 81786649c5
commit 2013ad897d
10 changed files with 20 additions and 14 deletions
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2
src/os/pipe2_bsd.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build freebsd netbsd
// +build freebsd netbsd openbsd
package os

2
src/os/pipe_bsd.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly nacl openbsd solaris
// +build darwin dragonfly nacl solaris
package os

2
src/syscall/forkpipe.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build darwin dragonfly openbsd solaris
// +build darwin dragonfly solaris
package syscall

2
src/syscall/forkpipe2.go
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@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build freebsd netbsd
// +build freebsd netbsd openbsd
package syscall

12
src/syscall/syscall_openbsd.go
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@ -62,16 +62,20 @@ func direntNamlen(buf []byte) (uint64, bool) {
return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
}
//sysnb pipe(p *[2]_C_int) (err error)
func Pipe(p []int) (err error) {
func Pipe(p []int) error {
return Pipe2(p, 0)
}
//sysnb pipe2(p *[2]_C_int, flags int) (err error)
func Pipe2(p []int, flags int) error {
if len(p) != 2 {
return EINVAL
}
var pp [2]_C_int
err = pipe(&pp)
err := pipe2(&pp, flags)
p[0] = int(pp[0])
p[1] = int(pp[1])
return
return err
}
//sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)

4
src/syscall/zsyscall_openbsd_386.go
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@ -261,8 +261,8 @@ func fcntl(fd int, cmd int, arg int) (val int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe(p *[2]_C_int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {
err = errnoErr(e1)
}

4
src/syscall/zsyscall_openbsd_amd64.go
View File

@ -261,8 +261,8 @@ func fcntl(fd int, cmd int, arg int) (val int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe(p *[2]_C_int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {
err = errnoErr(e1)
}

4
src/syscall/zsyscall_openbsd_arm.go
View File

@ -261,8 +261,8 @@ func fcntl(fd int, cmd int, arg int) (val int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe(p *[2]_C_int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {
err = errnoErr(e1)
}

1
src/syscall/zsysnum_openbsd_386.go
View File

@ -102,6 +102,7 @@ const (
SYS_CONNECT = 98 // { int sys_connect(int s, const struct sockaddr *name, \
SYS_GETDENTS = 99 // { int sys_getdents(int fd, void *buf, size_t buflen); }
SYS_GETPRIORITY = 100 // { int sys_getpriority(int which, id_t who); }
SYS_PIPE2 = 101 // { int sys_pipe2(int *fdp, int flags); }
SYS_SIGRETURN = 103 // { int sys_sigreturn(struct sigcontext *sigcntxp); }
SYS_BIND = 104 // { int sys_bind(int s, const struct sockaddr *name, \
SYS_SETSOCKOPT = 105 // { int sys_setsockopt(int s, int level, int name, \

1
src/syscall/zsysnum_openbsd_amd64.go
View File

@ -102,6 +102,7 @@ const (
SYS_CONNECT = 98 // { int sys_connect(int s, const struct sockaddr *name, \
SYS_GETDENTS = 99 // { int sys_getdents(int fd, void *buf, size_t buflen); }
SYS_GETPRIORITY = 100 // { int sys_getpriority(int which, id_t who); }
SYS_PIPE2 = 101 // { int sys_pipe2(int *fdp, int flags); }
SYS_SIGRETURN = 103 // { int sys_sigreturn(struct sigcontext *sigcntxp); }
SYS_BIND = 104 // { int sys_bind(int s, const struct sockaddr *name, \
SYS_SETSOCKOPT = 105 // { int sys_setsockopt(int s, int level, int name, \