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unix: add F*xattr on Darwin

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Add Fgetxattr, Flistxattr, Fremovexattr and Fsetxattr on Darwin. Also
add a corresponding test.

Updates golang/go#26832

Change-Id: Id75bfce90ccc024b567a7b066a9188a615b9eec4
Reviewed-on: https://go-review.googlesource.com/128537
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Tobias Klauser
2018-08-08 10:17:46 +02:00
committed by Tobias Klauser
parent 3249cb6984
commit 904bdc2570
6 changed files with 336 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
unix/syscall_darwin.go
View File

@@ -199,7 +199,13 @@ func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) {
return getxattr(link, attr, xattrPointer(dest), len(dest), 0, XATTR_NOFOLLOW)
}
//sys setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error)
//sys fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error)
func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) {
return fgetxattr(fd, attr, xattrPointer(dest), len(dest), 0, 0)
}
//sys setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error)
func Setxattr(path string, attr string, data []byte, flags int) (err error) {
// The parameters for the OS X implementation vary slightly compared to the
@@ -235,7 +241,13 @@ func Lsetxattr(link string, attr string, data []byte, flags int) (err error) {
return setxattr(link, attr, xattrPointer(data), len(data), 0, flags|XATTR_NOFOLLOW)
}
//sys removexattr(path string, attr string, options int) (err error)
//sys fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error)
func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) {
return fsetxattr(fd, attr, xattrPointer(data), len(data), 0, 0)
}
//sys removexattr(path string, attr string, options int) (err error)
func Removexattr(path string, attr string) (err error) {
// We wrap around and explicitly zero out the options provided to the OS X
@@ -248,6 +260,12 @@ func Lremovexattr(link string, attr string) (err error) {
return removexattr(link, attr, XATTR_NOFOLLOW)
}
//sys fremovexattr(fd int, attr string, options int) (err error)
func Fremovexattr(fd int, attr string) (err error) {
return fremovexattr(fd, attr, 0)
}
//sys listxattr(path string, dest *byte, size int, options int) (sz int, err error)
func Listxattr(path string, dest []byte) (sz int, err error) {
@@ -258,6 +276,12 @@ func Llistxattr(link string, dest []byte) (sz int, err error) {
return listxattr(link, xattrPointer(dest), len(dest), XATTR_NOFOLLOW)
}
//sys flistxattr(fd int, dest *byte, size int, options int) (sz int, err error)
func Flistxattr(fd int, dest []byte) (sz int, err error) {
return flistxattr(fd, xattrPointer(dest), len(dest), 0)
}
func setattrlistTimes(path string, times []Timespec, flags int) error {
_p0, err := BytePtrFromString(path)
if err != nil {
@@ -529,10 +553,6 @@ func Uname(uname *Utsname) error {
// Watchevent
// Waitevent
// Modwatch
// Fgetxattr
// Fsetxattr
// Fremovexattr
// Flistxattr
// Fsctl
// Initgroups
// Posix_spawn

82
unix/xattr_test.go
View File

@@ -7,6 +7,7 @@
package unix_test
import (
"io/ioutil"
"os"
"runtime"
"strings"
@@ -117,3 +118,84 @@ func TestXattr(t *testing.T) {
}
}
}
func TestFdXattr(t *testing.T) {
file, err := ioutil.TempFile("", "TestFdXattr")
if err != nil {
t.Fatal(err)
}
defer os.Remove(file.Name())
defer file.Close()
fd := int(file.Fd())
xattrName := "user.test"
xattrDataSet := "gopher"
err = unix.Fsetxattr(fd, xattrName, []byte(xattrDataSet), 0)
if err == unix.ENOTSUP || err == unix.EOPNOTSUPP {
t.Skip("filesystem does not support extended attributes, skipping test")
} else if err != nil {
t.Fatalf("Fsetxattr: %v", err)
}
// find size
size, err := unix.Flistxattr(fd, nil)
if err != nil {
t.Fatalf("Flistxattr: %v", err)
}
if size <= 0 {
t.Fatalf("Flistxattr returned an empty list of attributes")
}
buf := make([]byte, size)
read, err := unix.Flistxattr(fd, buf)
if err != nil {
t.Fatalf("Flistxattr: %v", err)
}
xattrs := stringsFromByteSlice(buf[:read])
xattrWant := xattrName
if runtime.GOOS == "freebsd" {
// On FreeBSD, the namespace is stored separately from the xattr
// name and Listxattr doesn't return the namespace prefix.
xattrWant = strings.TrimPrefix(xattrWant, "user.")
}
found := false
for _, name := range xattrs {
if name == xattrWant {
found = true
}
}
if !found {
t.Errorf("Flistxattr did not return previously set attribute '%s'", xattrName)
}
// find size
size, err = unix.Fgetxattr(fd, xattrName, nil)
if err != nil {
t.Fatalf("Fgetxattr: %v", err)
}
if size <= 0 {
t.Fatalf("Fgetxattr returned an empty attribute")
}
xattrDataGet := make([]byte, size)
_, err = unix.Fgetxattr(fd, xattrName, xattrDataGet)
if err != nil {
t.Fatalf("Fgetxattr: %v", err)
}
got := string(xattrDataGet)
if got != xattrDataSet {
t.Errorf("Fgetxattr: expected attribute value %s, got %s", xattrDataSet, got)
}
err = unix.Fremovexattr(fd, xattrName)
if err != nil {
t.Fatalf("Fremovexattr: %v", err)
}
}

57
unix/zsyscall_darwin_386.go
View File

@@ -420,6 +420,22 @@ func getxattr(path string, attr string, dest *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_FGETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(position), uintptr(options))
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -440,6 +456,21 @@ func setxattr(path string, attr string, data *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall6(SYS_FSETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(data)), uintptr(size), uintptr(position), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func removexattr(path string, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -460,6 +491,21 @@ func removexattr(path string, attr string, options int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fremovexattr(fd int, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall(SYS_FREMOVEXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func listxattr(path string, dest *byte, size int, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -476,6 +522,17 @@ func listxattr(path string, dest *byte, size int, options int) (sz int, err erro
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func flistxattr(fd int, dest *byte, size int, options int) (sz int, err error) {
r0, _, e1 := Syscall6(SYS_FLISTXATTR, uintptr(fd), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(options), 0, 0)
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func kill(pid int, signum int, posix int) (err error) {
_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), uintptr(posix))
if e1 != 0 {

57
unix/zsyscall_darwin_amd64.go
View File

@@ -420,6 +420,22 @@ func getxattr(path string, attr string, dest *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_FGETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(position), uintptr(options))
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -440,6 +456,21 @@ func setxattr(path string, attr string, data *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall6(SYS_FSETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(data)), uintptr(size), uintptr(position), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func removexattr(path string, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -460,6 +491,21 @@ func removexattr(path string, attr string, options int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fremovexattr(fd int, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall(SYS_FREMOVEXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func listxattr(path string, dest *byte, size int, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -476,6 +522,17 @@ func listxattr(path string, dest *byte, size int, options int) (sz int, err erro
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func flistxattr(fd int, dest *byte, size int, options int) (sz int, err error) {
r0, _, e1 := Syscall6(SYS_FLISTXATTR, uintptr(fd), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(options), 0, 0)
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func kill(pid int, signum int, posix int) (err error) {
_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), uintptr(posix))
if e1 != 0 {

57
unix/zsyscall_darwin_arm.go
View File

@@ -420,6 +420,22 @@ func getxattr(path string, attr string, dest *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_FGETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(position), uintptr(options))
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -440,6 +456,21 @@ func setxattr(path string, attr string, data *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall6(SYS_FSETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(data)), uintptr(size), uintptr(position), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func removexattr(path string, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -460,6 +491,21 @@ func removexattr(path string, attr string, options int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fremovexattr(fd int, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall(SYS_FREMOVEXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func listxattr(path string, dest *byte, size int, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -476,6 +522,17 @@ func listxattr(path string, dest *byte, size int, options int) (sz int, err erro
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func flistxattr(fd int, dest *byte, size int, options int) (sz int, err error) {
r0, _, e1 := Syscall6(SYS_FLISTXATTR, uintptr(fd), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(options), 0, 0)
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func kill(pid int, signum int, posix int) (err error) {
_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), uintptr(posix))
if e1 != 0 {

57
unix/zsyscall_darwin_arm64.go
View File

@@ -420,6 +420,22 @@ func getxattr(path string, attr string, dest *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_FGETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(position), uintptr(options))
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -440,6 +456,21 @@ func setxattr(path string, attr string, data *byte, size int, position uint32, o
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall6(SYS_FSETXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(data)), uintptr(size), uintptr(position), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func removexattr(path string, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -460,6 +491,21 @@ func removexattr(path string, attr string, options int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func fremovexattr(fd int, attr string, options int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := Syscall(SYS_FREMOVEXATTR, uintptr(fd), uintptr(unsafe.Pointer(_p0)), uintptr(options))
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func listxattr(path string, dest *byte, size int, options int) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -476,6 +522,17 @@ func listxattr(path string, dest *byte, size int, options int) (sz int, err erro
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func flistxattr(fd int, dest *byte, size int, options int) (sz int, err error) {
r0, _, e1 := Syscall6(SYS_FLISTXATTR, uintptr(fd), uintptr(unsafe.Pointer(dest)), uintptr(size), uintptr(options), 0, 0)
sz = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func kill(pid int, signum int, posix int) (err error) {
_, _, e1 := Syscall(SYS_KILL, uintptr(pid), uintptr(signum), uintptr(posix))
if e1 != 0 {