fuse integration: add POSIX compliance test suite

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

test/fuse_integration/xattr_linux.go

@@ -0,0 +1,115 @@
+//go:build linux
+
+package fuse
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// Extended attributes support for Linux
+
+func setXattr(path, name string, value []byte, flags int) error {
+	pathBytes, err := syscall.BytePtrFromString(path)
+	if err != nil {
+		return err
+	}
+	nameBytes, err := syscall.BytePtrFromString(name)
+	if err != nil {
+		return err
+	}
+
+	var valuePtr unsafe.Pointer
+	if len(value) > 0 {
+		valuePtr = unsafe.Pointer(&value[0])
+	}
+
+	_, _, errno := syscall.Syscall6(syscall.SYS_SETXATTR,
+		uintptr(unsafe.Pointer(pathBytes)),
+		uintptr(unsafe.Pointer(nameBytes)),
+		uintptr(valuePtr),
+		uintptr(len(value)),
+		uintptr(flags),
+		0)
+
+	if errno != 0 {
+		return errno
+	}
+	return nil
+}
+
+func getXattr(path, name string, value []byte) (int, error) {
+	pathBytes, err := syscall.BytePtrFromString(path)
+	if err != nil {
+		return 0, err
+	}
+	nameBytes, err := syscall.BytePtrFromString(name)
+	if err != nil {
+		return 0, err
+	}
+
+	var valuePtr unsafe.Pointer
+	if len(value) > 0 {
+		valuePtr = unsafe.Pointer(&value[0])
+	}
+
+	size, _, errno := syscall.Syscall6(syscall.SYS_GETXATTR,
+		uintptr(unsafe.Pointer(pathBytes)),
+		uintptr(unsafe.Pointer(nameBytes)),
+		uintptr(valuePtr),
+		uintptr(len(value)),
+		0,
+		0)
+
+	if errno != 0 {
+		return 0, errno
+	}
+	return int(size), nil
+}
+
+func listXattr(path string, list []byte) (int, error) {
+	pathBytes, err := syscall.BytePtrFromString(path)
+	if err != nil {
+		return 0, err
+	}
+
+	var listPtr unsafe.Pointer
+	if len(list) > 0 {
+		listPtr = unsafe.Pointer(&list[0])
+	}
+
+	size, _, errno := syscall.Syscall(syscall.SYS_LISTXATTR,
+		uintptr(unsafe.Pointer(pathBytes)),
+		uintptr(listPtr),
+		uintptr(len(list)))
+
+	if errno != 0 {
+		return 0, errno
+	}
+	return int(size), nil
+}
+
+func removeXattr(path, name string) error {
+	pathBytes, err := syscall.BytePtrFromString(path)
+	if err != nil {
+		return err
+	}
+	nameBytes, err := syscall.BytePtrFromString(name)
+	if err != nil {
+		return err
+	}
+
+	_, _, errno := syscall.Syscall(syscall.SYS_REMOVEXATTR,
+		uintptr(unsafe.Pointer(pathBytes)),
+		uintptr(unsafe.Pointer(nameBytes)),
+		0)
+
+	if errno != 0 {
+		return errno
+	}
+	return nil
+}
+
+func isXattrSupported() bool {
+	return true
+}