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all: drop support for FreeBSD 9 or below

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This change drops the support for FreeBSD 9 or below and simplifies
platform-dependent code for the sake of maintenance.

Updates #7187.
Fixes #11412.
Updates #16064.
Updates #18854.
Fixes #19072.

Change-Id: I9129130aafbfc7d0d7e9b674b6fc6cb31b7381be
Reviewed-on: https://go-review.googlesource.com/64910
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Mikio Hara 2017-08-19 13:46:48 +09:00 committed by Brad Fitzpatrick
parent 9a13f8e11c
commit e76ae8af92
11 changed files with 10 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
doc/install.html
View File

@ -16,7 +16,7 @@
<p>
<a href="https://golang.org/dl/" target="_blank">Official binary
distributions</a> are available for the FreeBSD (release 8-STABLE and above),
distributions</a> are available for the FreeBSD (release 10-STABLE and above),
Linux, Mac OS X (10.8 and above), and Windows operating systems and
the 32-bit (<code>386</code>) and 64-bit (<code>amd64</code>) x86 processor
architectures.
@ -47,7 +47,7 @@ If your OS or architecture is not on the list, you may be able to
<th align="center">Notes</th>
</tr>
<tr><td colspan="3"><hr></td></tr>
<tr><td>FreeBSD 9.3 or later</td> <td>amd64, 386</td> <td>Debian GNU/kFreeBSD not supported</td></tr>
<tr><td>FreeBSD 10.3 or later</td> <td>amd64, 386</td> <td>Debian GNU/kFreeBSD not supported</td></tr>
<tr valign='top'><td>Linux 2.6.23 or later with glibc</td> <td>amd64, 386, arm, arm64,<br>s390x, ppc64le</td> <td>CentOS/RHEL 5.x not supported.<br>Install from source for other libc.</td></tr>
<tr><td>macOS 10.8 or later</td> <td>amd64</td> <td>use the clang or gcc<sup>&#8224;</sup> that comes with Xcode<sup>&#8225;</sup> for <code>cgo</code> support</td></tr>
<tr><td>Windows XP SP2 or later</td> <td>amd64, 386</td> <td>use MinGW gcc<sup>&#8224;</sup>. No need for cygwin or msys.</td></tr>

2
src/net/platform_test.go
View File

@ -43,8 +43,6 @@ func testableNetwork(network string) bool {
case "unixpacket":
switch runtime.GOOS {
case "android", "darwin", "nacl", "plan9", "windows":
fallthrough
case "freebsd": // FreeBSD 8 and below don't support unixpacket
return false
}
}

4
src/net/sock_bsd.go
View File

@ -17,8 +17,10 @@ func maxListenerBacklog() int {
err error
)
switch runtime.GOOS {
case "darwin", "freebsd":
case "darwin":
n, err = syscall.SysctlUint32("kern.ipc.somaxconn")
case "freebsd":
n, err = syscall.SysctlUint32("kern.ipc.acceptqueue")
case "netbsd":
// NOTE: NetBSD has no somaxconn-like kernel state so far
case "openbsd":

16
src/os/pipe_freebsd.go
View File

@ -13,21 +13,7 @@ func Pipe() (r *File, w *File, err error) {
e := syscall.Pipe2(p[0:], syscall.O_CLOEXEC)
if e != nil {
// Fallback support for FreeBSD 9, which lacks Pipe2.
//
// TODO: remove this for Go 1.10 when FreeBSD 9
// is removed (Issue 19072).
// See ../syscall/exec.go for description of lock.
syscall.ForkLock.RLock()
e := syscall.Pipe(p[0:])
if e != nil {
syscall.ForkLock.RUnlock()
return nil, nil, NewSyscallError("pipe", e)
}
syscall.CloseOnExec(p[0])
syscall.CloseOnExec(p[1])
syscall.ForkLock.RUnlock()
return nil, nil, NewSyscallError("pipe", e)
}
return newFile(uintptr(p[0]), "|0", kindPipe), newFile(uintptr(p[1]), "|1", kindPipe), nil

17
src/os/sys_freebsd.go
View File

@ -4,20 +4,7 @@
package os
import "syscall"
// supportsCloseOnExec reports whether the platform supports the
// O_CLOEXEC flag.
var supportsCloseOnExec bool
func init() {
osrel, err := syscall.SysctlUint32("kern.osreldate")
if err != nil {
return
}
// The O_CLOEXEC flag was introduced in FreeBSD 8.3.
// See http://www.freebsd.org/doc/en/books/porters-handbook/freebsd-versions.html.
if osrel >= 803000 {
supportsCloseOnExec = true
}
}
// The O_CLOEXEC flag was introduced in FreeBSD 8.3.
const supportsCloseOnExec bool = true

5
src/os/wait_wait6.go
View File

@ -30,11 +30,6 @@ func (p *Process) blockUntilWaitable() (bool, error) {
}
runtime.KeepAlive(p)
if errno != 0 {
// The wait6 system call is supported only on FreeBSD
// 9.3 and above, so it may return an ENOSYS error.
if errno == syscall.ENOSYS {
return false, nil
}
return false, NewSyscallError("wait6", errno)
}
return true, nil

18
src/syscall/exec_freebsd.go
View File

@ -5,21 +5,5 @@
package syscall
func forkExecPipe(p []int) error {
err := Pipe2(p, O_CLOEXEC)
if err == nil {
return nil
}
// FreeBSD 9 fallback.
// TODO: remove this for Go 1.10 per Issue 19072
err = Pipe(p)
if err != nil {
return err
}
_, err = fcntl(p[0], F_SETFD, FD_CLOEXEC)
if err != nil {
return err
}
_, err = fcntl(p[1], F_SETFD, FD_CLOEXEC)
return err
return Pipe2(p, O_CLOEXEC)
}

9
src/syscall/syscall_freebsd.go
View File

@ -66,15 +66,8 @@ func direntNamlen(buf []byte) (uint64, bool) {
return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
}
//sysnb pipe() (r int, w int, err error)
func Pipe(p []int) error {
if len(p) != 2 {
return EINVAL
}
var err error
p[0], p[1], err = pipe()
return err
return Pipe2(p, 0)
}
//sysnb pipe2(p *[2]_C_int, flags int) (err error)

12
src/syscall/zsyscall_freebsd_386.go
View File

@ -261,18 +261,6 @@ 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() (r int, w int, err error) {
r0, r1, e1 := RawSyscall(SYS_PIPE, 0, 0, 0)
r = int(r0)
w = int(r1)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {

12
src/syscall/zsyscall_freebsd_amd64.go
View File

@ -261,18 +261,6 @@ 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() (r int, w int, err error) {
r0, r1, e1 := RawSyscall(SYS_PIPE, 0, 0, 0)
r = int(r0)
w = int(r1)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {

12
src/syscall/zsyscall_freebsd_arm.go
View File

@ -261,18 +261,6 @@ 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() (r int, w int, err error) {
r0, r1, e1 := RawSyscall(SYS_PIPE, 0, 0, 0)
r = int(r0)
w = int(r1)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func pipe2(p *[2]_C_int, flags int) (err error) {
_, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
if e1 != 0 {