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unix: add MemfdCreate on Linux

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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
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Tobias Klauser
2018-09-18 15:37:33 +00:00
committed by Tobias Klauser
parent d0be0721c3
commit ee1b12c67a
26 changed files with 375 additions and 1 deletions
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unix/zsyscall_linux_386.go
+16
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@@ -979,6 +979,22 @@ func Lsetxattr(path string, attr string, data []byte, flags int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func MemfdCreate(name string, flags int) (fd int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(name)
if err != nil {
return
}
r0, _, e1 := Syscall(SYS_MEMFD_CREATE, uintptr(unsafe.Pointer(_p0)), uintptr(flags), 0)
fd = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mkdirat(dirfd int, path string, mode uint32) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)