dep ensure

vendor/github.com/hanwen/go-fuse/fuse/pathfs/syscall_linux.go

@@ -0,0 +1,144 @@
+// Copyright 2016 the Go-FUSE Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package pathfs
+
+import (
+	"bytes"
+	"syscall"
+	"unsafe"
+)
+
+var _zero uintptr
+
+func getXAttr(path string, attr string, dest []byte) (value []byte, err error) {
+	sz, err := sysGetxattr(path, attr, dest)
+	for sz > cap(dest) && err == nil {
+		dest = make([]byte, sz)
+		sz, err = sysGetxattr(path, attr, dest)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return dest[:sz], err
+}
+
+func listXAttr(path string) (attributes []string, err error) {
+	dest := make([]byte, 0)
+	sz, err := sysListxattr(path, dest)
+	if err != nil {
+		return nil, err
+	}
+
+	for sz > cap(dest) && err == nil {
+		dest = make([]byte, sz)
+		sz, err = sysListxattr(path, dest)
+	}
+
+	if sz == 0 {
+		return nil, err
+	}
+
+	// -1 to drop the final empty slice.
+	dest = dest[:sz-1]
+	attributesBytes := bytes.Split(dest, []byte{0})
+	attributes = make([]string, len(attributesBytes))
+	for i, v := range attributesBytes {
+		attributes[i] = string(v)
+	}
+	return attributes, err
+}
+
+// Below is cut & paste from std lib syscall, so gccgo 4.8.1 can
+// compile this too.
+func sysGetxattr(path string, attr string, dest []byte) (sz int, err error) {
+	var _p0 *byte
+	_p0, err = syscall.BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = syscall.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 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
+	sz = int(r0)
+	if e1 != 0 {
+		err = e1
+	}
+	return
+}
+
+func sysRemovexattr(path string, attr string) (err error) {
+	var _p0 *byte
+	_p0, err = syscall.BytePtrFromString(path)
+	if err != nil {
+		return
+	}
+	var _p1 *byte
+	_p1, err = syscall.BytePtrFromString(attr)
+	if err != nil {
+		return
+	}
+	_, _, e1 := syscall.Syscall(syscall.SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
+	if e1 != 0 {
+		err = e1
+	}
+	return
+}
+
+func sysListxattr(path string, dest []byte) (sz int, err error) {
+	var _p0 *byte
+	_p0, err = syscall.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.Syscall(syscall.SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
+	sz = int(r0)
+	if e1 != 0 {
+		err = e1
+	}
+	return
+}
+
+func sysSetxattr(path string, attr string, val []byte, flag int) error {
+	return syscall.Setxattr(path, attr, val, flag)
+}
+
+const _AT_SYMLINK_NOFOLLOW = 0x100
+
+// Linux kernel syscall utimensat(2)
+//
+// Needed to implement SetAttr on symlinks correctly as only utimensat provides
+// AT_SYMLINK_NOFOLLOW.
+func sysUtimensat(dirfd int, pathname string, times *[2]syscall.Timespec, flags int) (err error) {
+
+	// Null-terminated version of pathname
+	p0, err := syscall.BytePtrFromString(pathname)
+	if err != nil {
+		return err
+	}
+
+	_, _, e1 := syscall.Syscall6(syscall.SYS_UTIMENSAT,
+		uintptr(dirfd), uintptr(unsafe.Pointer(p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
+	if e1 != 0 {
+		err = syscall.Errno(e1)
+	}
+	return
+}