class sun.nio.fs.UnixFileAttributeViews$Posix extends sun.nio.fs.UnixFileAttributeViews$Basic implements java.nio.file.attribute.PosixFileAttributeView
minor version: 0
major version: 59
flags: flags: (0x0020) ACC_SUPER
this_class: sun.nio.fs.UnixFileAttributeViews$Posix
super_class: sun.nio.fs.UnixFileAttributeViews$Basic
{
private static final java.lang.String PERMISSIONS_NAME;
descriptor: Ljava/lang/String;
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
ConstantValue: "permissions"
private static final java.lang.String OWNER_NAME;
descriptor: Ljava/lang/String;
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
ConstantValue: "owner"
private static final java.lang.String GROUP_NAME;
descriptor: Ljava/lang/String;
flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
ConstantValue: "group"
static final java.util.Set<java.lang.String> posixAttributeNames;
descriptor: Ljava/util/Set;
flags: (0x0018) ACC_STATIC, ACC_FINAL
Signature: Ljava/util/Set<Ljava/lang/String;>;
static void <clinit>();
descriptor: ()V
flags: (0x0008) ACC_STATIC
Code:
stack=5, locals=0, args_size=0
0: getstatic sun.nio.fs.UnixFileAttributeViews$Posix.basicAttributeNames:Ljava/util/Set;
iconst_3
anewarray java.lang.String
dup
iconst_0
ldc "permissions"
aastore
dup
iconst_1
ldc "owner"
aastore
dup
iconst_2
ldc "group"
aastore
invokestatic sun.nio.fs.Util.newSet:(Ljava/util/Set;[Ljava/lang/Object;)Ljava/util/Set;
1: putstatic sun.nio.fs.UnixFileAttributeViews$Posix.posixAttributeNames:Ljava/util/Set;
2: return
LocalVariableTable:
Start End Slot Name Signature
void <init>(sun.nio.fs.UnixPath, boolean);
descriptor: (Lsun/nio/fs/UnixPath;Z)V
flags: (0x0000)
Code:
stack=3, locals=3, args_size=3
start local 0 start local 1 start local 2 0: aload 0
aload 1
iload 2
invokespecial sun.nio.fs.UnixFileAttributeViews$Basic.<init>:(Lsun/nio/fs/UnixPath;Z)V
1: return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 2 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 2 1 file Lsun/nio/fs/UnixPath;
0 2 2 followLinks Z
MethodParameters:
Name Flags
file
followLinks
final void checkReadExtended();
descriptor: ()V
flags: (0x0010) ACC_FINAL
Code:
stack=4, locals=2, args_size=1
start local 0 0: invokestatic java.lang.System.getSecurityManager:()Ljava/lang/SecurityManager;
astore 1
start local 1 1: aload 1
ifnull 4
2: aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
invokevirtual sun.nio.fs.UnixPath.checkRead:()V
3: aload 1
new java.lang.RuntimePermission
dup
ldc "accessUserInformation"
invokespecial java.lang.RuntimePermission.<init>:(Ljava/lang/String;)V
invokevirtual java.lang.SecurityManager.checkPermission:(Ljava/security/Permission;)V
4: StackMap locals: java.lang.SecurityManager
StackMap stack:
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 5 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
1 5 1 sm Ljava/lang/SecurityManager;
final void checkWriteExtended();
descriptor: ()V
flags: (0x0010) ACC_FINAL
Code:
stack=4, locals=2, args_size=1
start local 0 0: invokestatic java.lang.System.getSecurityManager:()Ljava/lang/SecurityManager;
astore 1
start local 1 1: aload 1
ifnull 4
2: aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
invokevirtual sun.nio.fs.UnixPath.checkWrite:()V
3: aload 1
new java.lang.RuntimePermission
dup
ldc "accessUserInformation"
invokespecial java.lang.RuntimePermission.<init>:(Ljava/lang/String;)V
invokevirtual java.lang.SecurityManager.checkPermission:(Ljava/security/Permission;)V
4: StackMap locals: java.lang.SecurityManager
StackMap stack:
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 5 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
1 5 1 sm Ljava/lang/SecurityManager;
public java.lang.String name();
descriptor: ()Ljava/lang/String;
flags: (0x0001) ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
start local 0 0: ldc "posix"
areturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
public void setAttribute(java.lang.String, java.lang.Object);
descriptor: (Ljava/lang/String;Ljava/lang/Object;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=3, args_size=3
start local 0 start local 1 start local 2 0: aload 1
ldc "permissions"
invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
ifeq 3
1: aload 0
aload 2
checkcast java.util.Set
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.setPermissions:(Ljava/util/Set;)V
2: return
3: StackMap locals:
StackMap stack:
aload 1
ldc "owner"
invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
ifeq 6
4: aload 0
aload 2
checkcast java.nio.file.attribute.UserPrincipal
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.setOwner:(Ljava/nio/file/attribute/UserPrincipal;)V
5: return
6: StackMap locals:
StackMap stack:
aload 1
ldc "group"
invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
ifeq 9
7: aload 0
aload 2
checkcast java.nio.file.attribute.GroupPrincipal
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.setGroup:(Ljava/nio/file/attribute/GroupPrincipal;)V
8: return
9: StackMap locals:
StackMap stack:
aload 0
aload 1
aload 2
invokespecial sun.nio.fs.UnixFileAttributeViews$Basic.setAttribute:(Ljava/lang/String;Ljava/lang/Object;)V
10: return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 11 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 11 1 attribute Ljava/lang/String;
0 11 2 value Ljava/lang/Object;
Exceptions:
throws java.io.IOException
MethodParameters:
Name Flags
attribute
value
final void addRequestedPosixAttributes(java.nio.file.attribute.PosixFileAttributes, sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder);
descriptor: (Ljava/nio/file/attribute/PosixFileAttributes;Lsun/nio/fs/AbstractBasicFileAttributeView$AttributesBuilder;)V
flags: (0x0010) ACC_FINAL
Code:
stack=3, locals=3, args_size=3
start local 0 start local 1 start local 2 0: aload 0
aload 1
aload 2
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.addRequestedBasicAttributes:(Ljava/nio/file/attribute/BasicFileAttributes;Lsun/nio/fs/AbstractBasicFileAttributeView$AttributesBuilder;)V
1: aload 2
ldc "permissions"
invokevirtual sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.match:(Ljava/lang/String;)Z
ifeq 3
2: aload 2
ldc "permissions"
aload 1
invokeinterface java.nio.file.attribute.PosixFileAttributes.permissions:()Ljava/util/Set;
invokevirtual sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.add:(Ljava/lang/String;Ljava/lang/Object;)V
3: StackMap locals:
StackMap stack:
aload 2
ldc "owner"
invokevirtual sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.match:(Ljava/lang/String;)Z
ifeq 5
4: aload 2
ldc "owner"
aload 1
invokeinterface java.nio.file.attribute.PosixFileAttributes.owner:()Ljava/nio/file/attribute/UserPrincipal;
invokevirtual sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.add:(Ljava/lang/String;Ljava/lang/Object;)V
5: StackMap locals:
StackMap stack:
aload 2
ldc "group"
invokevirtual sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.match:(Ljava/lang/String;)Z
ifeq 7
6: aload 2
ldc "group"
aload 1
invokeinterface java.nio.file.attribute.PosixFileAttributes.group:()Ljava/nio/file/attribute/GroupPrincipal;
invokevirtual sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.add:(Ljava/lang/String;Ljava/lang/Object;)V
7: StackMap locals:
StackMap stack:
return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 8 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 8 1 attrs Ljava/nio/file/attribute/PosixFileAttributes;
0 8 2 builder Lsun/nio/fs/AbstractBasicFileAttributeView$AttributesBuilder;
MethodParameters:
Name Flags
attrs
builder
public java.util.Map<java.lang.String, java.lang.Object> readAttributes(java.lang.String[]);
descriptor: ([Ljava/lang/String;)Ljava/util/Map;
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=4, args_size=2
start local 0 start local 1 0: getstatic sun.nio.fs.UnixFileAttributeViews$Posix.posixAttributeNames:Ljava/util/Set;
aload 1
invokestatic sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.create:(Ljava/util/Set;[Ljava/lang/String;)Lsun/nio/fs/AbstractBasicFileAttributeView$AttributesBuilder;
1: astore 2
start local 2 2: aload 0
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.readAttributes:()Lsun/nio/fs/UnixFileAttributes;
astore 3
start local 3 3: aload 0
aload 3
aload 2
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.addRequestedPosixAttributes:(Ljava/nio/file/attribute/PosixFileAttributes;Lsun/nio/fs/AbstractBasicFileAttributeView$AttributesBuilder;)V
4: aload 2
invokevirtual sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder.unmodifiableMap:()Ljava/util/Map;
areturn
end local 3 end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 5 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 5 1 requested [Ljava/lang/String;
2 5 2 builder Lsun/nio/fs/AbstractBasicFileAttributeView$AttributesBuilder;
3 5 3 attrs Ljava/nio/file/attribute/PosixFileAttributes;
Exceptions:
throws java.io.IOException
Signature: ([Ljava/lang/String;)Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;
MethodParameters:
Name Flags
requested
public sun.nio.fs.UnixFileAttributes readAttributes();
descriptor: ()Lsun/nio/fs/UnixFileAttributes;
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=2, args_size=1
start local 0 0: aload 0
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.checkReadExtended:()V
1: aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.followLinks:Z
invokestatic sun.nio.fs.UnixFileAttributes.get:(Lsun/nio/fs/UnixPath;Z)Lsun/nio/fs/UnixFileAttributes;
2: areturn
3: StackMap locals:
StackMap stack: sun.nio.fs.UnixException
astore 1
start local 1 4: aload 1
aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
invokevirtual sun.nio.fs.UnixException.rethrowAsIOException:(Lsun/nio/fs/UnixPath;)V
5: aconst_null
areturn
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 6 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
4 6 1 x Lsun/nio/fs/UnixException;
Exception table:
from to target type
1 2 3 Class sun.nio.fs.UnixException
Exceptions:
throws java.io.IOException
final void setMode(int);
descriptor: (I)V
flags: (0x0010) ACC_FINAL
Code:
stack=2, locals=4, args_size=2
start local 0 start local 1 0: aload 0
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.checkWriteExtended:()V
1: aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.followLinks:Z
ifeq 4
2: aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
iload 1
invokestatic sun.nio.fs.UnixNativeDispatcher.chmod:(Lsun/nio/fs/UnixPath;I)V
3: goto 14
4: StackMap locals:
StackMap stack:
aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
iconst_0
invokevirtual sun.nio.fs.UnixPath.openForAttributeAccess:(Z)I
istore 2
start local 2 5: iload 2
iload 1
invokestatic sun.nio.fs.UnixNativeDispatcher.fchmod:(II)V
6: goto 10
StackMap locals: sun.nio.fs.UnixFileAttributeViews$Posix int int
StackMap stack: java.lang.Throwable
7: astore 3
8: iload 2
invokestatic sun.nio.fs.UnixNativeDispatcher.close:(I)V
9: aload 3
athrow
10: StackMap locals:
StackMap stack:
iload 2
invokestatic sun.nio.fs.UnixNativeDispatcher.close:(I)V
end local 2 11: goto 14
StackMap locals: sun.nio.fs.UnixFileAttributeViews$Posix int
StackMap stack: sun.nio.fs.UnixException
12: astore 2
start local 2 13: aload 2
aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
invokevirtual sun.nio.fs.UnixException.rethrowAsIOException:(Lsun/nio/fs/UnixPath;)V
end local 2 14: StackMap locals:
StackMap stack:
return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 15 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 15 1 mode I
5 11 2 fd I
13 14 2 x Lsun/nio/fs/UnixException;
Exception table:
from to target type
5 7 7 any
1 11 12 Class sun.nio.fs.UnixException
Exceptions:
throws java.io.IOException
MethodParameters:
Name Flags
mode
final void setOwners(int, int);
descriptor: (II)V
flags: (0x0010) ACC_FINAL
Code:
stack=3, locals=4, args_size=3
start local 0 start local 1 start local 2 0: aload 0
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.checkWriteExtended:()V
1: aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.followLinks:Z
ifeq 4
2: aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
iload 1
iload 2
invokestatic sun.nio.fs.UnixNativeDispatcher.chown:(Lsun/nio/fs/UnixPath;II)V
3: goto 8
4: StackMap locals:
StackMap stack:
aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
iload 1
iload 2
invokestatic sun.nio.fs.UnixNativeDispatcher.lchown:(Lsun/nio/fs/UnixPath;II)V
5: goto 8
StackMap locals:
StackMap stack: sun.nio.fs.UnixException
6: astore 3
start local 3 7: aload 3
aload 0
getfield sun.nio.fs.UnixFileAttributeViews$Posix.file:Lsun/nio/fs/UnixPath;
invokevirtual sun.nio.fs.UnixException.rethrowAsIOException:(Lsun/nio/fs/UnixPath;)V
end local 3 8: StackMap locals:
StackMap stack:
return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 9 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 9 1 uid I
0 9 2 gid I
7 8 3 x Lsun/nio/fs/UnixException;
Exception table:
from to target type
1 5 6 Class sun.nio.fs.UnixException
Exceptions:
throws java.io.IOException
MethodParameters:
Name Flags
uid
gid
public void setPermissions(java.util.Set<java.nio.file.attribute.PosixFilePermission>);
descriptor: (Ljava/util/Set;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=2, locals=2, args_size=2
start local 0 start local 1 0: aload 0
aload 1
invokestatic sun.nio.fs.UnixFileModeAttribute.toUnixMode:(Ljava/util/Set;)I
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.setMode:(I)V
1: return
end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 2 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 2 1 perms Ljava/util/Set<Ljava/nio/file/attribute/PosixFilePermission;>;
Exceptions:
throws java.io.IOException
Signature: (Ljava/util/Set<Ljava/nio/file/attribute/PosixFilePermission;>;)V
MethodParameters:
Name Flags
perms
public void setOwner(java.nio.file.attribute.UserPrincipal);
descriptor: (Ljava/nio/file/attribute/UserPrincipal;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=3, args_size=2
start local 0 start local 1 0: aload 1
ifnonnull 2
1: new java.lang.NullPointerException
dup
ldc "'owner' is null"
invokespecial java.lang.NullPointerException.<init>:(Ljava/lang/String;)V
athrow
2: StackMap locals:
StackMap stack:
aload 1
instanceof sun.nio.fs.UnixUserPrincipals$User
ifne 4
3: new java.nio.file.ProviderMismatchException
dup
invokespecial java.nio.file.ProviderMismatchException.<init>:()V
athrow
4: StackMap locals:
StackMap stack:
aload 1
instanceof sun.nio.fs.UnixUserPrincipals$Group
ifeq 6
5: new java.io.IOException
dup
ldc "'owner' parameter can't be a group"
invokespecial java.io.IOException.<init>:(Ljava/lang/String;)V
athrow
6: StackMap locals:
StackMap stack:
aload 1
checkcast sun.nio.fs.UnixUserPrincipals$User
invokevirtual sun.nio.fs.UnixUserPrincipals$User.uid:()I
istore 2
start local 2 7: aload 0
iload 2
iconst_m1
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.setOwners:(II)V
8: return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 9 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 9 1 owner Ljava/nio/file/attribute/UserPrincipal;
7 9 2 uid I
Exceptions:
throws java.io.IOException
MethodParameters:
Name Flags
owner
public java.nio.file.attribute.UserPrincipal getOwner();
descriptor: ()Ljava/nio/file/attribute/UserPrincipal;
flags: (0x0001) ACC_PUBLIC
Code:
stack=1, locals=1, args_size=1
start local 0 0: aload 0
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.readAttributes:()Lsun/nio/fs/UnixFileAttributes;
invokevirtual sun.nio.fs.UnixFileAttributes.owner:()Ljava/nio/file/attribute/UserPrincipal;
areturn
end local 0 LocalVariableTable:
Start End Slot Name Signature
0 1 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
Exceptions:
throws java.io.IOException
public void setGroup(java.nio.file.attribute.GroupPrincipal);
descriptor: (Ljava/nio/file/attribute/GroupPrincipal;)V
flags: (0x0001) ACC_PUBLIC
Code:
stack=3, locals=3, args_size=2
start local 0 start local 1 0: aload 1
ifnonnull 2
1: new java.lang.NullPointerException
dup
ldc "'owner' is null"
invokespecial java.lang.NullPointerException.<init>:(Ljava/lang/String;)V
athrow
2: StackMap locals:
StackMap stack:
aload 1
instanceof sun.nio.fs.UnixUserPrincipals$Group
ifne 4
3: new java.nio.file.ProviderMismatchException
dup
invokespecial java.nio.file.ProviderMismatchException.<init>:()V
athrow
4: StackMap locals:
StackMap stack:
aload 1
checkcast sun.nio.fs.UnixUserPrincipals$Group
invokevirtual sun.nio.fs.UnixUserPrincipals$Group.gid:()I
istore 2
start local 2 5: aload 0
iconst_m1
iload 2
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.setOwners:(II)V
6: return
end local 2 end local 1 end local 0 LocalVariableTable:
Start End Slot Name Signature
0 7 0 this Lsun/nio/fs/UnixFileAttributeViews$Posix;
0 7 1 group Ljava/nio/file/attribute/GroupPrincipal;
5 7 2 gid I
Exceptions:
throws java.io.IOException
MethodParameters:
Name Flags
group
public java.nio.file.attribute.PosixFileAttributes readAttributes();
descriptor: ()Ljava/nio/file/attribute/PosixFileAttributes;
flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
Code:
stack=1, locals=1, args_size=1
0: aload 0
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.readAttributes:()Lsun/nio/fs/UnixFileAttributes;
areturn
LocalVariableTable:
Start End Slot Name Signature
Exceptions:
throws java.io.IOException
public java.nio.file.attribute.BasicFileAttributes readAttributes();
descriptor: ()Ljava/nio/file/attribute/BasicFileAttributes;
flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
Code:
stack=1, locals=1, args_size=1
0: aload 0
invokevirtual sun.nio.fs.UnixFileAttributeViews$Posix.readAttributes:()Lsun/nio/fs/UnixFileAttributes;
areturn
LocalVariableTable:
Start End Slot Name Signature
Exceptions:
throws java.io.IOException
}
SourceFile: "UnixFileAttributeViews.java"
NestHost: sun.nio.fs.UnixFileAttributeViews
InnerClasses:
AttributesBuilder = sun.nio.fs.AbstractBasicFileAttributeView$AttributesBuilder of sun.nio.fs.AbstractBasicFileAttributeView
Basic = sun.nio.fs.UnixFileAttributeViews$Basic of sun.nio.fs.UnixFileAttributeViews
private Posix = sun.nio.fs.UnixFileAttributeViews$Posix of sun.nio.fs.UnixFileAttributeViews
Group = sun.nio.fs.UnixUserPrincipals$Group of sun.nio.fs.UnixUserPrincipals
User = sun.nio.fs.UnixUserPrincipals$User of sun.nio.fs.UnixUserPrincipals