unix: add Statx on Linux

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
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Tobias Klauser
2018-01-15 08:58:44 +00:00
committed by Tobias Klauser
parent 52ba35ddf9
commit fff93fa7cd
38 changed files with 952 additions and 37 deletions
+4
View File
@@ -61,6 +61,10 @@ func main() {
convertUtsnameRegex := regexp.MustCompile(`((Sys|Node|Domain)name|Release|Version|Machine)(\s+)\[(\d+)\]u?int8`)
b = convertUtsnameRegex.ReplaceAll(b, []byte("$1$3[$4]byte"))
// Remove spare fields (e.g. in Statx_t)
spareFieldsRegex := regexp.MustCompile(`X__spare\S*`)
b = spareFieldsRegex.ReplaceAll(b, []byte("_"))
// We refuse to export private fields on s390x
if goarch == "s390x" && goos == "linux" {
// Remove cgo padding fields