unix: add missing xattr symlink syscall functions on Linux
Add support for the lgetxattr, llistxattr, lremovexattr and lsetxattr on
Linux, akin to the already existing getxattr, listxattr, removexattr and
setxattr syscalls.
These variants are identical to the already existing variants. except in
the case of a symbolic link where the extended attribute operation is
applied to the link itself rather than to the file that it refers to.
See:
http://man7.org/linux/man-pages/man2/getxattr.2.html
http://man7.org/linux/man-pages/man2/listxattr.2.html
http://man7.org/linux/man-pages/man2/removexattr.2.html
http://man7.org/linux/man-pages/man2/setxattr.2.html
Fixes golang/go#14116
Change-Id: I786953db8bf862566f54bdd745cc1feca5031be7
Reviewed-on: https://go-review.googlesource.com/44374
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/unix/zsyscall_linux_mips64.go b/unix/zsyscall_linux_mips64.go
index 5a496a9..b584866 100644
--- a/unix/zsyscall_linux_mips64.go
+++ b/unix/zsyscall_linux_mips64.go
@@ -827,6 +827,33 @@
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+func Lgetxattr(path string, attr string, dest []byte) (sz int, err error) {
+ var _p0 *byte
+ _p0, err = BytePtrFromString(path)
+ if err != nil {
+ return
+ }
+ var _p1 *byte
+ _p1, err = BytePtrFromString(attr)
+ if err != nil {
+ return
+ }
+ var _p2 unsafe.Pointer
+ if len(dest) > 0 {
+ _p2 = unsafe.Pointer(&dest[0])
+ } else {
+ _p2 = unsafe.Pointer(&_zero)
+ }
+ r0, _, e1 := Syscall6(SYS_LGETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 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 Listxattr(path string, dest []byte) (sz int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
@@ -849,6 +876,74 @@
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+func Llistxattr(path string, dest []byte) (sz int, err error) {
+ var _p0 *byte
+ _p0, err = BytePtrFromString(path)
+ if err != nil {
+ return
+ }
+ var _p1 unsafe.Pointer
+ if len(dest) > 0 {
+ _p1 = unsafe.Pointer(&dest[0])
+ } else {
+ _p1 = unsafe.Pointer(&_zero)
+ }
+ r0, _, e1 := Syscall(SYS_LLISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
+ sz = int(r0)
+ if e1 != 0 {
+ err = errnoErr(e1)
+ }
+ return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Lremovexattr(path string, attr string) (err error) {
+ var _p0 *byte
+ _p0, err = BytePtrFromString(path)
+ if err != nil {
+ return
+ }
+ var _p1 *byte
+ _p1, err = BytePtrFromString(attr)
+ if err != nil {
+ return
+ }
+ _, _, e1 := Syscall(SYS_LREMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
+ if e1 != 0 {
+ err = errnoErr(e1)
+ }
+ return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func Lsetxattr(path string, attr string, data []byte, flags int) (err error) {
+ var _p0 *byte
+ _p0, err = BytePtrFromString(path)
+ if err != nil {
+ return
+ }
+ var _p1 *byte
+ _p1, err = BytePtrFromString(attr)
+ if err != nil {
+ return
+ }
+ var _p2 unsafe.Pointer
+ if len(data) > 0 {
+ _p2 = unsafe.Pointer(&data[0])
+ } else {
+ _p2 = unsafe.Pointer(&_zero)
+ }
+ _, _, e1 := Syscall6(SYS_LSETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(data)), uintptr(flags), 0)
+ 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)
