Examples of java.nio.file.attribute.AclFileAttributeView

java.nio.file.attribute.AclFileAttributeView
etf.org/rfc/rfc3530.txt">RFC 3530: Network File System (NFS) version 4 Protocol. This file attribute view is intended for file system implementations that support the NFSv4 ACL model or have a well-defined mapping between the NFSv4 ACL model and the ACL model used by the file system. The details of such mapping are implementation dependent and are therefore unspecified.
This class also extends {@code FileOwnerAttributeView} so as to definemethods to get and set the file owner.
When a file system provides access to a set of {@link FileStore file-systems} that are not homogeneous then only some of the file systems maysupport ACLs. The {@link FileStore#supportsFileAttributeView supportsFileAttributeView} method can be used to test if a file systemsupports ACLs.
Interoperability
RFC 3530 allows for special user identities to be used on platforms that support the POSIX defined access permissions. The special user identities are " {@code OWNER@}", " {@code GROUP@}", and " {@code EVERYONE@}". When both the {@code AclFileAttributeView} and the {@link PosixFileAttributeView}are supported then these special user identities may be included in ACL {@link AclEntry entries} that are read or written. The file system's {@link UserPrincipalLookupService} may be used to obtain a {@link UserPrincipal}to represent these special identities by invoking the {@link UserPrincipalLookupService#lookupPrincipalByName lookupPrincipalByName}method.
Usage Example: Suppose we wish to add an entry to an existing ACL to grant "joe" access:
```
 // lookup "joe" UserPrincipal joe = file.getFileSystem().getUserPrincipalLookupService() .lookupPrincipalByName("joe"); // get view AclFileAttributeView view = Files.getFileAttributeView(file, AclFileAttributeView.class); // create ACE to give "joe" read access AclEntry entry = AclEntry.newBuilder() .setType(AclEntryType.ALLOW) .setPrincipal(joe) .setPermissions(AclEntryPermission.READ_DATA, AclEntryPermission.READ_ATTRIBUTES) .build(); // read ACL, insert ACE, re-write ACL List<AclEntry> acl = view.getAcl(); acl.add(0, entry);   // insert before any DENY entries view.setAcl(acl); 
```
Dynamic Access

Where dynamic access to file attributes is required, the attributes supported by this attribute view are as follows:

Name Type

"acl" {@link List}< {@link AclEntry}>

"owner" {@link UserPrincipal}

The {@link Files#getAttribute getAttribute} method may be used to readthe ACL or owner attributes as if by invoking the {@link #getAcl getAcl} or{@link #getOwner getOwner} methods.
The {@link Files#setAttribute setAttribute} method may be used toupdate the ACL or owner attributes as if by invoking the {@link #setAcl setAcl}or {@link #setOwner setOwner} methods.
Setting the ACL when creating a file

Implementations supporting this attribute view may also support setting the initial ACL when creating a file or directory. The initial ACL may be provided to methods such as {@link Files#createFile createFile} or {@link Files#createDirectory createDirectory} as an {@link FileAttribute} with {@link FileAttribute#name name} {@code "acl:acl"} and a {@link FileAttribute#value value} that is the list of {@code AclEntry} objects.
Where an implementation supports an ACL model that differs from the NFSv4 defined ACL model then setting the initial ACL when creating the file must translate the ACL to the model supported by the file system. Methods that create a file should reject (by throwing {@link IOException IOException}) any attempt to create a file that would be less secure as a result of the translation. @since 1.7

Name	Type
"acl"	{@link List}< {@link AclEntry}>
"owner"	{@link UserPrincipal}

              else
                throw new CloudsyncException(msg + "\n  try to run with '--permissions try'");
            }
            break;
          case Item.ATTRIBUTE_ACL:
            AclFileAttributeView aclView = Files.getFileAttributeView(path, AclFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
            if (aclView != null) {
              List<AclEntry> acls = aclView.getAcl();
              for (int i = 0; i < values.length; i = i + 4) {


                Builder aclEntryBuilder = AclEntry.newBuilder();


                aclEntryBuilder.setType(AclEntryType.valueOf(values[i]));
                aclEntryBuilder.setPrincipal(lookupService.lookupPrincipalByName(values[i + 1]));


                Set<AclEntryFlag> flags = new HashSet<AclEntryFlag>();
                for (String flag : StringUtils.splitPreserveAllTokens(values[i + 2], ",")) {
                  flags.add(AclEntryFlag.valueOf(flag));
                }
                if (flags.size() > 0)
                  aclEntryBuilder.setFlags(flags);


                Set<AclEntryPermission> aclPermissions = new HashSet<AclEntryPermission>();
                for (String flag : StringUtils.splitPreserveAllTokens(values[i + 3], ",")) {
                  aclPermissions.add(AclEntryPermission.valueOf(flag));
                }
                if (aclPermissions.size() > 0)
                  aclEntryBuilder.setPermissions(aclPermissions);
                acls.add(aclEntryBuilder.build());
              }
              aclView.setAcl(acls);
            } else {
              String msg = "Can't restore 'acl' permissions on '" + item.getPath() + "'. They are not supported.";
              if (permissionType.equals(PermissionType.TRY))
                LOGGER.log(Level.WARNING, msg);
              else

View Full Code Here

        }
      }


      if (!type.equals(ItemType.LINK)) {


        AclFileAttributeView aclView = Files.getFileAttributeView(path, AclFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
        if (aclView != null) {
          if (!attributes.containsKey(Item.ATTRIBUTE_POSIX))
            attributes.put(Item.ATTRIBUTE_OWNER, new String[] { aclView.getOwner().getName() });


          AclFileAttributeView parentAclView = Files.getFileAttributeView(path.getParent(), AclFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);


          List<AclEntry> aclList = getLocalAclEntries(type, parentAclView.getAcl(), aclView.getAcl());
          if (aclList.size() > 0) {
            List<String> aclData = new ArrayList<String>();
            for (AclEntry acl : aclList) {
              List<String> flags = new ArrayList<String>();
              for (AclEntryFlag flag : acl.flags()) {

View Full Code Here

    assertSetFails("acl", ImmutableList.of("hello"));
  }


  @Test
  public void testView() throws IOException {
    AclFileAttributeView view = provider.view(fileLookup(),
        ImmutableMap.<String, FileAttributeView>of(
            "owner", new OwnerAttributeProvider().view(fileLookup(), NO_INHERITED_VIEWS)));
    assertNotNull(view);


    assertThat(view.name()).isEqualTo("acl");


    assertThat(view.getAcl()).isEqualTo(defaultAcl);


    view.setAcl(ImmutableList.<AclEntry>of());
    view.setOwner(FOO);


    assertThat(view.getAcl()).isEqualTo(ImmutableList.<AclEntry>of());
    assertThat(view.getOwner()).isEqualTo(FOO);


    assertThat(file.getAttribute("acl", "acl")).isEqualTo(ImmutableList.<AclEntry>of());
  }

View Full Code Here

TOP

Related Classes of java.nio.file.attribute.AclFileAttributeView

cloudsync.connector.LocalFilesystemConnector

com.google.common.jimfs.AclAttributeProviderTest

org.apache.derby.iapi.services.io.FilePermissionServiceImpl

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.

Examples of java.nio.file.attribute.AclFileAttributeView

Interoperability

Dynamic Access

Setting the ACL when creating a file

Related Classes of java.nio.file.attribute.AclFileAttributeView