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HDFS-6570. add api that enables checking if a user has certain permissions on a file. Contributed by Jitendra Pandey.

Browse Source 
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1614723 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Chris Nauroth 2014-07-30 17:49:09 +00:00
parent 9b2bfc7c28
commit 535fe14ded
34 changed files with 670 additions and 11 deletions
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13
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/AbstractFileSystem.java
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@ -43,6 +43,7 @@
import org.apache.hadoop.fs.Options.Rename;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.InvalidPathException;
import org.apache.hadoop.security.AccessControlException;
@ -803,6 +804,18 @@ public abstract FileStatus getFileStatus(final Path f)
throws AccessControlException, FileNotFoundException,
UnresolvedLinkException, IOException;
/**
* The specification of this method matches that of
* {@link FileContext#access(Path, FsAction)}
* except that an UnresolvedLinkException may be thrown if a symlink is
* encountered in the path.
*/
@InterfaceAudience.LimitedPrivate({"HDFS", "Hive"})
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
FileSystem.checkAccessPermissions(this.getFileStatus(path), mode);
}
/**
* The specification of this method matches that of
* {@link FileContext#getFileLinkStatus(Path)}

50
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileContext.java
View File

@ -44,6 +44,7 @@
import org.apache.hadoop.fs.Options.CreateOpts;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.FS_DEFAULT_NAME_KEY;
import static org.apache.hadoop.fs.CommonConfigurationKeysPublic.FS_DEFAULT_NAME_DEFAULT;
@ -1108,6 +1109,55 @@ public FileStatus next(final AbstractFileSystem fs, final Path p)
}.resolve(this, absF);
}
/**
* Checks if the user can access a path. The mode specifies which access
* checks to perform. If the requested permissions are granted, then the
* method returns normally. If access is denied, then the method throws an
* {@link AccessControlException}.
* <p/>
* The default implementation of this method calls {@link #getFileStatus(Path)}
* and checks the returned permissions against the requested permissions.
* Note that the getFileStatus call will be subject to authorization checks.
* Typically, this requires search (execute) permissions on each directory in
* the path's prefix, but this is implementation-defined. Any file system
* that provides a richer authorization model (such as ACLs) may override the
* default implementation so that it checks against that model instead.
* <p>
* In general, applications should avoid using this method, due to the risk of
* time-of-check/time-of-use race conditions. The permissions on a file may
* change immediately after the access call returns. Most applications should
* prefer running specific file system actions as the desired user represented
* by a {@link UserGroupInformation}.
*
* @param path Path to check
* @param mode type of access to check
* @throws AccessControlException if access is denied
* @throws FileNotFoundException if the path does not exist
* @throws UnsupportedFileSystemException if file system for <code>path</code>
* is not supported
* @throws IOException see specific implementation
*
* Exceptions applicable to file systems accessed over RPC:
* @throws RpcClientException If an exception occurred in the RPC client
* @throws RpcServerException If an exception occurred in the RPC server
* @throws UnexpectedServerException If server implementation throws
* undeclared exception to RPC server
*/
@InterfaceAudience.LimitedPrivate({"HDFS", "Hive"})
public void access(final Path path, final FsAction mode)
throws AccessControlException, FileNotFoundException,
UnsupportedFileSystemException, IOException {
final Path absPath = fixRelativePart(path);
new FSLinkResolver<Void>() {
@Override
public Void next(AbstractFileSystem fs, Path p) throws IOException,
UnresolvedLinkException {
fs.access(p, mode);
return null;
}
}.resolve(this, absPath);
}
/**
* Return a file status object that represents the path. If the path
* refers to a symlink then the FileStatus of the symlink is returned.

67
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java
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@ -25,6 +25,7 @@
import java.net.URISyntaxException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
@ -50,6 +51,7 @@
import org.apache.hadoop.fs.Options.Rename;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.io.MultipleIOException;
import org.apache.hadoop.io.Text;
@ -2072,6 +2074,71 @@ public short getDefaultReplication(Path path) {
*/
public abstract FileStatus getFileStatus(Path f) throws IOException;
/**
* Checks if the user can access a path. The mode specifies which access
* checks to perform. If the requested permissions are granted, then the
* method returns normally. If access is denied, then the method throws an
* {@link AccessControlException}.
* <p/>
* The default implementation of this method calls {@link #getFileStatus(Path)}
* and checks the returned permissions against the requested permissions.
* Note that the getFileStatus call will be subject to authorization checks.
* Typically, this requires search (execute) permissions on each directory in
* the path's prefix, but this is implementation-defined. Any file system
* that provides a richer authorization model (such as ACLs) may override the
* default implementation so that it checks against that model instead.
* <p>
* In general, applications should avoid using this method, due to the risk of
* time-of-check/time-of-use race conditions. The permissions on a file may
* change immediately after the access call returns. Most applications should
* prefer running specific file system actions as the desired user represented
* by a {@link UserGroupInformation}.
*
* @param path Path to check
* @param mode type of access to check
* @throws AccessControlException if access is denied
* @throws FileNotFoundException if the path does not exist
* @throws IOException see specific implementation
*/
@InterfaceAudience.LimitedPrivate({"HDFS", "Hive"})
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, IOException {
checkAccessPermissions(this.getFileStatus(path), mode);
}
/**
* This method provides the default implementation of
* {@link #access(Path, FsAction)}.
*
* @param stat FileStatus to check
* @param mode type of access to check
* @throws IOException for any error
*/
@InterfaceAudience.Private
static void checkAccessPermissions(FileStatus stat, FsAction mode)
throws IOException {
FsPermission perm = stat.getPermission();
UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
String user = ugi.getShortUserName();
List<String> groups = Arrays.asList(ugi.getGroupNames());
if (user.equals(stat.getOwner())) {
if (perm.getUserAction().implies(mode)) {
return;
}
} else if (groups.contains(stat.getGroup())) {
if (perm.getGroupAction().implies(mode)) {
return;
}
} else {
if (perm.getOtherAction().implies(mode)) {
return;
}
}
throw new AccessControlException(String.format(
"Permission denied: user=%s, path=\"%s\":%s:%s:%s%s", user, stat.getPath(),
stat.getOwner(), stat.getGroup(), stat.isDirectory() ? "d" : "-", perm));
}
/**
* See {@link FileContext#fixRelativePart}
*/

7
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FilterFileSystem.java
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@ -30,6 +30,7 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.Options.ChecksumOpt;
import org.apache.hadoop.security.AccessControlException;
@ -397,6 +398,12 @@ public FileStatus getFileStatus(Path f) throws IOException {
return fs.getFileStatus(f);
}
@Override
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, IOException {
fs.access(path, mode);
}
public void createSymlink(final Path target, final Path link,
final boolean createParent) throws AccessControlException,
FileAlreadyExistsException, FileNotFoundException,

8
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FilterFs.java
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@ -29,6 +29,7 @@
import org.apache.hadoop.fs.FileSystem.Statistics;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.Options.ChecksumOpt;
import org.apache.hadoop.security.AccessControlException;
@ -119,6 +120,13 @@ public FileStatus getFileStatus(Path f)
return myFs.getFileStatus(f);
}
@Override
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
checkPath(path);
myFs.access(path, mode);
}
@Override
public FileStatus getFileLinkStatus(final Path f)
throws IOException, UnresolvedLinkException {

8
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ChRootedFileSystem.java
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@ -41,7 +41,9 @@
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.util.Progressable;
/**
@ -222,6 +224,12 @@ public FileStatus getFileStatus(final Path f)
return super.getFileStatus(fullPath(f));
}
@Override
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, IOException {
super.access(fullPath(path), mode);
}
@Override
public FsStatus getStatus(Path p) throws IOException {
return super.getStatus(fullPath(p));

7
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ChRootedFs.java
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@ -41,7 +41,9 @@
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.Progressable;
@ -200,6 +202,11 @@ public FileStatus getFileStatus(final Path f)
return myFs.getFileStatus(fullPath(f));
}
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
myFs.access(fullPath(path), mode);
}
@Override
public FileStatus getFileLinkStatus(final Path f)
throws IOException, UnresolvedLinkException {

10
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFileSystem.java
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@ -51,6 +51,7 @@
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.AclUtil;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.viewfs.InodeTree.INode;
import org.apache.hadoop.fs.viewfs.InodeTree.INodeLink;
@ -359,7 +360,14 @@ public FileStatus getFileStatus(final Path f) throws AccessControlException,
return new ViewFsFileStatus(status, this.makeQualified(f));
}
@Override
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, IOException {
InodeTree.ResolveResult<FileSystem> res =
fsState.resolve(getUriPath(path), true);
res.targetFileSystem.access(res.remainingPath, mode);
}
@Override
public FileStatus[] listStatus(final Path f) throws AccessControlException,
FileNotFoundException, IOException {

9
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/viewfs/ViewFs.java
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@ -54,6 +54,7 @@
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclUtil;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.viewfs.InodeTree.INode;
import org.apache.hadoop.fs.viewfs.InodeTree.INodeLink;
@ -352,6 +353,14 @@ public FileStatus getFileStatus(final Path f) throws AccessControlException,
return new ViewFsFileStatus(status, this.makeQualified(f));
}
@Override
public void access(Path path, FsAction mode) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
InodeTree.ResolveResult<AbstractFileSystem> res =
fsState.resolve(getUriPath(path), true);
res.targetFileSystem.access(res.remainingPath, mode);
}
@Override
public FileStatus getFileLinkStatus(final Path f)
throws AccessControlException, FileNotFoundException,

3
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/TestHarFileSystem.java
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@ -23,6 +23,7 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.security.token.Token;
@ -201,6 +202,8 @@ public Map<String, byte[]> getXAttrs(Path path, List<String> names)
public void removeXAttr(Path path, String name) throws IOException;
public AclStatus getAclStatus(Path path) throws IOException;
public void access(Path path, FsAction mode) throws IOException;
}
@Test

3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
View File

@ -332,6 +332,9 @@ Release 2.6.0 - UNRELEASED
HDFS-6778. The extended attributes javadoc should simply refer to the
user docs. (clamb via wang)
HDFS-6570. add api that enables checking if a user has certain permissions on
a file. (Jitendra Pandey via cnauroth)
OPTIMIZATIONS
HDFS-6690. Deduplicate xattr names in memory. (wang)

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/fs/Hdfs.java
View File

@ -33,6 +33,7 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.Options.ChecksumOpt;
import org.apache.hadoop.hdfs.CorruptFileBlockIterator;
@ -448,6 +449,11 @@ public void removeXAttr(Path path, String name) throws IOException {
dfs.removeXAttr(getUriPath(path), name);
}
@Override
public void access(Path path, final FsAction mode) throws IOException {
dfs.checkAccess(getUriPath(path), mode);
}
/**
* Renew an existing delegation token.
*

12
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
View File

@ -122,6 +122,7 @@
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.hdfs.client.HdfsDataInputStream;
import org.apache.hadoop.hdfs.client.HdfsDataOutputStream;
import org.apache.hadoop.hdfs.net.Peer;
@ -2832,6 +2833,17 @@ public void removeXAttr(String src, String name) throws IOException {
}
}
public void checkAccess(String src, FsAction mode) throws IOException {
checkOpen();
try {
namenode.checkAccess(src, mode);
} catch (RemoteException re) {
throw re.unwrapRemoteException(AccessControlException.class,
FileNotFoundException.class,
UnresolvedPathException.class);
}
}
@Override // RemotePeerFactory
public Peer newConnectedPeer(InetSocketAddress addr,
Token<BlockTokenIdentifier> blockToken, DatanodeID datanodeId)

20
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DistributedFileSystem.java
View File

@ -59,6 +59,7 @@
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.hdfs.client.HdfsAdmin;
import org.apache.hadoop.hdfs.client.HdfsDataInputStream;
import org.apache.hadoop.hdfs.client.HdfsDataOutputStream;
@ -1898,4 +1899,23 @@ public Void next(final FileSystem fs, final Path p) throws IOException {
}
}.resolve(this, absF);
}
@Override
public void access(Path path, final FsAction mode) throws IOException {
final Path absF = fixRelativePart(path);
new FileSystemLinkResolver<Void>() {
@Override
public Void doCall(final Path p) throws IOException {
dfs.checkAccess(getPathName(p), mode);
return null;
}
@Override
public Void next(final FileSystem fs, final Path p)
throws IOException {
fs.access(p, mode);
return null;
}
}.resolve(this, absF);
}
}

19
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/ClientProtocol.java
View File

@ -39,6 +39,7 @@
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.RollingUpgradeAction;
@ -1327,4 +1328,22 @@ public List<XAttr> listXAttrs(String src)
*/
@AtMostOnce
public void removeXAttr(String src, XAttr xAttr) throws IOException;
/**
* Checks if the user can access a path. The mode specifies which access
* checks to perform. If the requested permissions are granted, then the
* method returns normally. If access is denied, then the method throws an
* {@link AccessControlException}.
* In general, applications should avoid using this method, due to the risk of
* time-of-check/time-of-use race conditions. The permissions on a file may
* change immediately after the access call returns.
*
* @param path Path to check
* @param mode type of access to check
* @throws AccessControlException if access is denied
* @throws FileNotFoundException if the path does not exist
* @throws IOException see specific implementation
*/
@Idempotent
public void checkAccess(String path, FsAction mode) throws IOException;
}

16
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientNamenodeProtocolServerSideTranslatorPB.java
View File

@ -174,6 +174,8 @@
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.UpdateBlockForPipelineResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.UpdatePipelineRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.UpdatePipelineResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CheckAccessRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CheckAccessResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.DatanodeIDProto;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.DatanodeInfoProto;
import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.LocatedBlockProto;
@ -320,6 +322,9 @@ public class ClientNamenodeProtocolServerSideTranslatorPB implements
private static final RemoveXAttrResponseProto
VOID_REMOVEXATTR_RESPONSE = RemoveXAttrResponseProto.getDefaultInstance();
private static final CheckAccessResponseProto
VOID_CHECKACCESS_RESPONSE = CheckAccessResponseProto.getDefaultInstance();
/**
* Constructor
*
@ -1338,4 +1343,15 @@ public RemoveXAttrResponseProto removeXAttr(RpcController controller,
}
return VOID_REMOVEXATTR_RESPONSE;
}
@Override
public CheckAccessResponseProto checkAccess(RpcController controller,
CheckAccessRequestProto req) throws ServiceException {
try {
server.checkAccess(req.getPath(), PBHelper.convert(req.getMode()));
} catch (IOException e) {
throw new ServiceException(e);
}
return VOID_CHECKACCESS_RESPONSE;
}
}

13
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientNamenodeProtocolTranslatorPB.java
View File

@ -39,6 +39,7 @@
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException;
import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry;
@ -144,6 +145,7 @@
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.SetTimesRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.UpdateBlockForPipelineRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.UpdatePipelineRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.CheckAccessRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.XAttrProtos.GetXAttrsRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.XAttrProtos.ListXAttrsRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.XAttrProtos.RemoveXAttrRequestProto;
@ -1346,4 +1348,15 @@ public void removeXAttr(String src, XAttr xAttr) throws IOException {
throw ProtobufHelper.getRemoteException(e);
}
}
@Override
public void checkAccess(String path, FsAction mode) throws IOException {
CheckAccessRequestProto req = CheckAccessRequestProto.newBuilder()
.setPath(path).setMode(PBHelper.convert(mode)).build();
try {
rpcProxy.checkAccess(null, req);
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
}
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelper.java
View File

@ -2107,11 +2107,11 @@ private static XAttr.NameSpace convert(XAttrNamespaceProto v) {
return castEnum(v, XATTR_NAMESPACE_VALUES);
}
private static FsActionProto convert(FsAction v) {
public static FsActionProto convert(FsAction v) {
return FsActionProto.valueOf(v != null ? v.ordinal() : 0);
}
private static FsAction convert(FsActionProto v) {
public static FsAction convert(FsActionProto v) {
return castEnum(v, FSACTION_VALUES);
}

23
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
View File

@ -8458,6 +8458,29 @@ private void checkXAttrChangeAccess(String src, XAttr xAttr,
}
}
void checkAccess(String src, FsAction mode) throws AccessControlException,
FileNotFoundException, UnresolvedLinkException, IOException {
checkOperation(OperationCategory.READ);
byte[][] pathComponents = FSDirectory.getPathComponentsForReservedPath(src);
readLock();
try {
checkOperation(OperationCategory.READ);
src = FSDirectory.resolvePath(src, pathComponents, dir);
if (dir.getINode(src) == null) {
throw new FileNotFoundException("Path not found");
}
if (isPermissionEnabled) {
FSPermissionChecker pc = getPermissionChecker();
checkPathAccess(pc, src, mode);
}
} catch (AccessControlException e) {
logAuditEvent(false, "checkAccess", src);
throw e;
} finally {
readUnlock();
}
}
/**
* Default AuditLogger implementation; used when no access logger is
* defined in the config file. It can also be explicitly listed in the

6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
View File

@ -54,6 +54,7 @@
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.ha.HAServiceStatus;
import org.apache.hadoop.ha.HealthCheckFailedException;
@ -1443,5 +1444,10 @@ public List<XAttr> listXAttrs(String src) throws IOException {
public void removeXAttr(String src, XAttr xAttr) throws IOException {
namesystem.removeXAttr(src, xAttr);
}
@Override
public void checkAccess(String path, FsAction mode) throws IOException {
namesystem.checkAccess(path, mode);
}
}

23
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/web/resources/NamenodeWebHdfsMethods.java
View File

@ -57,6 +57,7 @@
import org.apache.hadoop.fs.Options;
import org.apache.hadoop.fs.XAttr;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.hdfs.StorageType;
import org.apache.hadoop.hdfs.XAttrHelper;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
@ -112,6 +113,7 @@
import org.apache.hadoop.hdfs.web.resources.XAttrNameParam;
import org.apache.hadoop.hdfs.web.resources.XAttrSetFlagParam;
import org.apache.hadoop.hdfs.web.resources.XAttrValueParam;
import org.apache.hadoop.hdfs.web.resources.FsActionParam;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.ipc.RetriableException;
import org.apache.hadoop.ipc.Server;
@ -755,10 +757,12 @@ public Response getRoot(
@QueryParam(XAttrEncodingParam.NAME) @DefaultValue(XAttrEncodingParam.DEFAULT)
final XAttrEncodingParam xattrEncoding,
@QueryParam(ExcludeDatanodesParam.NAME) @DefaultValue(ExcludeDatanodesParam.DEFAULT)
final ExcludeDatanodesParam excludeDatanodes
final ExcludeDatanodesParam excludeDatanodes,
@QueryParam(FsActionParam.NAME) @DefaultValue(FsActionParam.DEFAULT)
final FsActionParam fsAction
) throws IOException, InterruptedException {
return get(ugi, delegation, username, doAsUser, ROOT, op, offset, length,
renewer, bufferSize, xattrNames, xattrEncoding, excludeDatanodes);
renewer, bufferSize, xattrNames, xattrEncoding, excludeDatanodes, fsAction);
}
/** Handle HTTP GET request. */
@ -789,11 +793,13 @@ public Response get(
@QueryParam(XAttrEncodingParam.NAME) @DefaultValue(XAttrEncodingParam.DEFAULT)
final XAttrEncodingParam xattrEncoding,
@QueryParam(ExcludeDatanodesParam.NAME) @DefaultValue(ExcludeDatanodesParam.DEFAULT)
final ExcludeDatanodesParam excludeDatanodes
final ExcludeDatanodesParam excludeDatanodes,
@QueryParam(FsActionParam.NAME) @DefaultValue(FsActionParam.DEFAULT)
final FsActionParam fsAction
) throws IOException, InterruptedException {
init(ugi, delegation, username, doAsUser, path, op, offset, length,
renewer, bufferSize, xattrEncoding, excludeDatanodes);
renewer, bufferSize, xattrEncoding, excludeDatanodes, fsAction);
return ugi.doAs(new PrivilegedExceptionAction<Response>() {
@Override
@ -801,7 +807,7 @@ public Response run() throws IOException, URISyntaxException {
try {
return get(ugi, delegation, username, doAsUser,
path.getAbsolutePath(), op, offset, length, renewer, bufferSize,
xattrNames, xattrEncoding, excludeDatanodes);
xattrNames, xattrEncoding, excludeDatanodes, fsAction);
} finally {
reset();
}
@ -822,7 +828,8 @@ private Response get(
final BufferSizeParam bufferSize,
final List<XAttrNameParam> xattrNames,
final XAttrEncodingParam xattrEncoding,
final ExcludeDatanodesParam excludeDatanodes
final ExcludeDatanodesParam excludeDatanodes,
final FsActionParam fsAction
) throws IOException, URISyntaxException {
final NameNode namenode = (NameNode)context.getAttribute("name.node");
final NamenodeProtocols np = getRPCServer(namenode);
@ -919,6 +926,10 @@ private Response get(
final String js = JsonUtil.toJsonString(xAttrs);
return Response.ok(js).type(MediaType.APPLICATION_JSON).build();
}
case CHECKACCESS: {
np.checkAccess(fullpath, FsAction.getFsAction(fsAction.getValue()));
return Response.ok().build();
}
default:
throw new UnsupportedOperationException(op + " is not supported");
}

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java
View File

@ -54,6 +54,7 @@
import org.apache.hadoop.fs.XAttrSetFlag;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSUtil;
@ -1356,6 +1357,12 @@ BlockLocation[] decodeResponse(Map<?,?> json) throws IOException {
}.run();
}
@Override
public void access(final Path path, final FsAction mode) throws IOException {
final HttpOpParam.Op op = GetOpParam.Op.CHECKACCESS;
new FsPathRunner(op, path, new FsActionParam(mode)).run();
}
@Override
public ContentSummary getContentSummary(final Path p) throws IOException {
statistics.incrementReadOps(1);

58
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/resources/FsActionParam.java Normal file
View File

@ -0,0 +1,58 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.web.resources;
import org.apache.hadoop.fs.permission.FsAction;
import java.util.regex.Pattern;
/** {@link FsAction} Parameter */
public class FsActionParam extends StringParam {
/** Parameter name. */
public static final String NAME = "fsaction";
/** Default parameter value. */
public static final String DEFAULT = NULL;
private static String FS_ACTION_PATTERN = "[rwx-]{3}";
private static final Domain DOMAIN = new Domain(NAME,
Pattern.compile(FS_ACTION_PATTERN));
/**
* Constructor.
* @param str a string representation of the parameter value.
*/
public FsActionParam(final String str) {
super(DOMAIN, str == null || str.equals(DEFAULT)? null: str);
}
/**
* Constructor.
* @param value the parameter value.
*/
public FsActionParam(final FsAction value) {
super(DOMAIN, value == null? null: value.SYMBOL);
}
@Override
public String getName() {
return NAME;
}
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/resources/GetOpParam.java
View File

@ -39,7 +39,9 @@ public static enum Op implements HttpOpParam.Op {
GETXATTRS(false, HttpURLConnection.HTTP_OK),
LISTXATTRS(false, HttpURLConnection.HTTP_OK),
NULL(false, HttpURLConnection.HTTP_NOT_IMPLEMENTED);
NULL(false, HttpURLConnection.HTTP_NOT_IMPLEMENTED),
CHECKACCESS(false, HttpURLConnection.HTTP_OK);
final boolean redirect;
final int expectedHttpResponseCode;

10
hadoop-hdfs-project/hadoop-hdfs/src/main/proto/ClientNamenodeProtocol.proto
View File

@ -654,6 +654,14 @@ message DeleteSnapshotRequestProto {
message DeleteSnapshotResponseProto { // void response
}
message CheckAccessRequestProto {
required string path = 1;
required AclEntryProto.FsActionProto mode = 2;
}
message CheckAccessResponseProto { // void response
}
service ClientNamenodeProtocol {
rpc getBlockLocations(GetBlockLocationsRequestProto)
returns(GetBlockLocationsResponseProto);
@ -783,4 +791,6 @@ service ClientNamenodeProtocol {
returns(ListXAttrsResponseProto);
rpc removeXAttr(RemoveXAttrRequestProto)
returns(RemoveXAttrResponseProto);
rpc checkAccess(CheckAccessRequestProto)
returns(CheckAccessResponseProto);
}

44
hadoop-hdfs-project/hadoop-hdfs/src/site/apt/WebHDFS.apt.vm
View File

@ -82,6 +82,9 @@ WebHDFS REST API
* {{{List all XAttrs}<<<LISTXATTRS>>>}}
(see {{{../../api/org/apache/hadoop/fs/FileSystem.html}FileSystem}}.listXAttrs)
* {{{Check access}<<<CHECKACCESS>>>}}
(see {{{../../api/org/apache/hadoop/fs/FileSystem.html}FileSystem}}.access)
* HTTP PUT
* {{{Create and Write to a File}<<<CREATE>>>}}
@ -927,6 +930,28 @@ Transfer-Encoding: chunked
{{{../../api/org/apache/hadoop/fs/FileSystem.html}FileSystem}}.getAclStatus
** {Check access}
* Submit a HTTP GET request.
+---------------------------------
curl -i -X PUT "http://<HOST>:<PORT>/webhdfs/v1/<PATH>?op=CHECKACCESS
&fsaction=<FSACTION>
+---------------------------------
The client receives a response with zero content length:
+---------------------------------
HTTP/1.1 200 OK
Content-Length: 0
+---------------------------------
[]
See also:
{{{../../api/org/apache/hadoop/fs/FileSystem.html}FileSystem}}.access
* {Extended Attributes(XAttrs) Operations}
** {Set XAttr}
@ -2166,6 +2191,25 @@ var tokenProperties =
{{Proxy Users}}
** {Fs Action}
*----------------+-------------------------------------------------------------------+
|| Name | <<<fsaction>>> |
*----------------+-------------------------------------------------------------------+
|| Description | File system operation read/write/execute |
*----------------+-------------------------------------------------------------------+
|| Type | String |
*----------------+-------------------------------------------------------------------+
|| Default Value | null (an invalid value) |
*----------------+-------------------------------------------------------------------+
|| Valid Values | Strings matching regex pattern \"[rwx-]\{3\}\" |
*----------------+-------------------------------------------------------------------+
|| Syntax | \"[rwx-]\{3\}\" |
*----------------+-------------------------------------------------------------------+
See also:
{{{Check access}<<<CHECKACCESS>>>}},
** {Group}
*----------------+-------------------------------------------------------------------+

77
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSPermission.java
View File

@ -20,8 +20,11 @@
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.PrivilegedExceptionAction;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
@ -36,6 +39,7 @@
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.Time;
@ -421,6 +425,79 @@ public void testPermissionChecking() throws Exception {
}
}
@Test
public void testAccessOwner() throws IOException, InterruptedException {
FileSystem rootFs = FileSystem.get(conf);
Path p1 = new Path("/p1");
rootFs.mkdirs(p1);
rootFs.setOwner(p1, USER1_NAME, GROUP1_NAME);
fs = USER1.doAs(new PrivilegedExceptionAction<FileSystem>() {
@Override
public FileSystem run() throws Exception {
return FileSystem.get(conf);
}
});
fs.setPermission(p1, new FsPermission((short) 0444));
fs.access(p1, FsAction.READ);
try {
fs.access(p1, FsAction.WRITE);
fail("The access call should have failed.");
} catch (AccessControlException e) {
// expected
}
Path badPath = new Path("/bad/bad");
try {
fs.access(badPath, FsAction.READ);
fail("The access call should have failed");
} catch (FileNotFoundException e) {
// expected
}
}
@Test
public void testAccessGroupMember() throws IOException, InterruptedException {
FileSystem rootFs = FileSystem.get(conf);
Path p2 = new Path("/p2");
rootFs.mkdirs(p2);
rootFs.setOwner(p2, UserGroupInformation.getCurrentUser().getShortUserName(), GROUP1_NAME);
rootFs.setPermission(p2, new FsPermission((short) 0740));
fs = USER1.doAs(new PrivilegedExceptionAction<FileSystem>() {
@Override
public FileSystem run() throws Exception {
return FileSystem.get(conf);
}
});
fs.access(p2, FsAction.READ);
try {
fs.access(p2, FsAction.EXECUTE);
fail("The access call should have failed.");
} catch (AccessControlException e) {
// expected
}
}
@Test
public void testAccessOthers() throws IOException, InterruptedException {
FileSystem rootFs = FileSystem.get(conf);
Path p3 = new Path("/p3");
rootFs.mkdirs(p3);
rootFs.setPermission(p3, new FsPermission((short) 0774));
fs = USER1.doAs(new PrivilegedExceptionAction<FileSystem>() {
@Override
public FileSystem run() throws Exception {
return FileSystem.get(conf);
}
});
fs.access(p3, FsAction.READ);
try {
fs.access(p3, FsAction.READ_WRITE);
fail("The access call should have failed.");
} catch (AccessControlException e) {
// expected
}
}
/* Check if namenode performs permission checking correctly
* for the given user for operations mkdir, open, setReplication,
* getFileInfo, isDirectory, exists, getContentLength, list, rename,

23
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSafeMode.java
View File

@ -26,6 +26,7 @@
import static org.junit.Assert.fail;
import java.io.IOException;
import java.security.PrivilegedExceptionAction;
import java.util.List;
import org.apache.commons.logging.Log;
@ -36,6 +37,7 @@
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.MiniDFSCluster.DataNodeProperties;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.SafeModeAction;
@ -47,6 +49,8 @@
import org.apache.hadoop.hdfs.server.namenode.SafeModeException;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.test.GenericTestUtils;
import org.junit.After;
import org.junit.Before;
@ -297,7 +301,8 @@ public void runFsFun(String msg, FSRun f) {
* assert that they are either allowed or fail as expected.
*/
@Test
public void testOperationsWhileInSafeMode() throws IOException {
public void testOperationsWhileInSafeMode() throws IOException,
InterruptedException {
final Path file1 = new Path("/file1");
assertFalse(dfs.setSafeMode(SafeModeAction.SAFEMODE_GET));
@ -407,6 +412,22 @@ public void run(FileSystem fs) throws IOException {
fail("getAclStatus failed while in SM");
}
// Test access
UserGroupInformation ugiX = UserGroupInformation.createRemoteUser("userX");
FileSystem myfs = ugiX.doAs(new PrivilegedExceptionAction<FileSystem>() {
@Override
public FileSystem run() throws IOException {
return FileSystem.get(conf);
}
});
myfs.access(file1, FsAction.READ);
try {
myfs.access(file1, FsAction.WRITE);
fail("The access call should have failed.");
} catch (AccessControlException e) {
// expected
}
assertFalse("Could not leave SM",
dfs.setSafeMode(SafeModeAction.SAFEMODE_LEAVE));
}

28
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/FSAclBaseTest.java
View File

@ -34,6 +34,7 @@
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
import org.apache.hadoop.hdfs.MiniDFSCluster;
@ -1256,6 +1257,33 @@ public void testGetAclStatusRequiresTraverseOrSuper() throws Exception {
fsAsDiana.getAclStatus(bruceFile);
}
@Test
public void testAccess() throws IOException, InterruptedException {
Path p1 = new Path("/p1");
fs.mkdirs(p1);
fs.setOwner(p1, BRUCE.getShortUserName(), "groupX");
fsAsBruce.setAcl(p1, Lists.newArrayList(
aclEntry(ACCESS, USER, READ),
aclEntry(ACCESS, USER, "bruce", READ),
aclEntry(ACCESS, GROUP, NONE),
aclEntry(ACCESS, OTHER, NONE)));
fsAsBruce.access(p1, FsAction.READ);
try {
fsAsBruce.access(p1, FsAction.WRITE);
fail("The access call should have failed.");
} catch (AccessControlException e) {
// expected
}
Path badPath = new Path("/bad/bad");
try {
fsAsBruce.access(badPath, FsAction.READ);
fail("The access call should have failed");
} catch (FileNotFoundException e) {
// expected
}
}
/**
* Creates a FileSystem for the super-user.
*

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java
View File

@ -45,6 +45,7 @@
import org.apache.hadoop.fs.PathIsNotDirectoryException;
import org.apache.hadoop.fs.RemoteIterator;
import org.apache.hadoop.fs.XAttr;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.hdfs.DFSClient;
@ -581,6 +582,7 @@ public void testInodeIdBasedPaths() throws Exception {
fs.getAclStatus(testFileInodePath);
fs.getXAttrs(testFileInodePath);
fs.listXAttrs(testFileInodePath);
fs.access(testFileInodePath, FsAction.READ_WRITE);
}
// symbolic link related tests

9
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestAclWithSnapshot.java
View File

@ -30,6 +30,7 @@
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.AclEntry;
import org.apache.hadoop.fs.permission.AclStatus;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
@ -674,6 +675,13 @@ private static void assertDirPermissionDenied(FileSystem fs,
} catch (AccessControlException e) {
// expected
}
try {
fs.access(pathToCheck, FsAction.READ);
fail("The access call should have failed for "+pathToCheck);
} catch (AccessControlException e) {
// expected
}
}
/**
@ -689,6 +697,7 @@ private static void assertDirPermissionGranted(FileSystem fs,
UserGroupInformation user, Path pathToCheck) throws Exception {
try {
fs.listStatus(pathToCheck);
fs.access(pathToCheck, FsAction.READ);
} catch (AccessControlException e) {
fail("expected permission granted for user " + user + ", path = " +
pathToCheck);

33
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsFileSystemContract.java
View File

@ -39,6 +39,7 @@
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystemContractBaseTest;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.AppendTestUtil;
import org.apache.hadoop.hdfs.DFSConfigKeys;
@ -49,6 +50,7 @@
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.junit.Assert;
import org.junit.Test;
public class TestWebHdfsFileSystemContract extends FileSystemContractBaseTest {
private static final Configuration conf = new Configuration();
@ -530,4 +532,35 @@ public void testResponseCode() throws IOException {
}
}
}
@Test
public void testAccess() throws IOException, InterruptedException {
Path p1 = new Path("/pathX");
try {
UserGroupInformation ugi = UserGroupInformation.createUserForTesting("alpha",
new String[]{"beta"});
WebHdfsFileSystem fs = WebHdfsTestUtil.getWebHdfsFileSystemAs(ugi, conf,
WebHdfsFileSystem.SCHEME);
fs.mkdirs(p1);
fs.setPermission(p1, new FsPermission((short) 0444));
fs.access(p1, FsAction.READ);
try {
fs.access(p1, FsAction.WRITE);
fail("The access call should have failed.");
} catch (AccessControlException e) {
// expected
}
Path badPath = new Path("/bad");
try {
fs.access(badPath, FsAction.READ);
fail("The access call should have failed");
} catch (FileNotFoundException e) {
// expected
}
} finally {
fs.delete(p1, true);
}
}
}

24
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsUrl.java
View File

@ -31,6 +31,7 @@
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenSecretManager;
import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
@ -40,6 +41,7 @@
import org.apache.hadoop.hdfs.web.resources.PutOpParam;
import org.apache.hadoop.hdfs.web.resources.TokenArgumentParam;
import org.apache.hadoop.hdfs.web.resources.UserParam;
import org.apache.hadoop.hdfs.web.resources.FsActionParam;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.SecurityUtil;
@ -283,6 +285,28 @@ public void testSecureProxyAuthParamsInUrl() throws IOException {
},
fileStatusUrl);
}
@Test(timeout=60000)
public void testCheckAccessUrl() throws IOException {
Configuration conf = new Configuration();
UserGroupInformation ugi =
UserGroupInformation.createRemoteUser("test-user");
UserGroupInformation.setLoginUser(ugi);
WebHdfsFileSystem webhdfs = getWebHdfsFileSystem(ugi, conf);
Path fsPath = new Path("/p1");
URL checkAccessUrl = webhdfs.toUrl(GetOpParam.Op.CHECKACCESS,
fsPath, new FsActionParam(FsAction.READ_WRITE));
checkQueryParams(
new String[]{
GetOpParam.Op.CHECKACCESS.toQueryString(),
new UserParam(ugi.getShortUserName()).toString(),
FsActionParam.NAME + "=" + FsAction.READ_WRITE.SYMBOL
},
checkAccessUrl);
}
private void checkQueryParams(String[] expected, URL url) {
Arrays.sort(expected);

35
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/security/TestPermissionSymlinks.java
View File

@ -27,6 +27,7 @@
import static org.junit.Assert.fail;
import java.io.IOException;
import java.io.FileNotFoundException;
import java.security.PrivilegedExceptionAction;
import java.util.Arrays;
@ -39,6 +40,7 @@
import org.apache.hadoop.fs.FileSystemTestWrapper;
import org.apache.hadoop.fs.Options.Rename;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsAction;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.DFSTestUtil;
@ -393,4 +395,37 @@ public Object run() throws IOException {
GenericTestUtils.assertExceptionContains("Permission denied", e);
}
}
@Test
public void testAccess() throws Exception {
fs.setPermission(target, new FsPermission((short) 0002));
fs.setAcl(target, Arrays.asList(
aclEntry(ACCESS, USER, ALL),
aclEntry(ACCESS, GROUP, NONE),
aclEntry(ACCESS, USER, user.getShortUserName(), WRITE),
aclEntry(ACCESS, OTHER, WRITE)));
FileContext myfc = user.doAs(new PrivilegedExceptionAction<FileContext>() {
@Override
public FileContext run() throws IOException {
return FileContext.getFileContext(conf);
}
});
// Path to targetChild via symlink
myfc.access(link, FsAction.WRITE);
try {
myfc.access(link, FsAction.ALL);
fail("The access call should have failed.");
} catch (AccessControlException e) {
// expected
}
Path badPath = new Path(link, "bad");
try {
myfc.access(badPath, FsAction.READ);
fail("The access call should have failed");
} catch (FileNotFoundException e) {
// expected
}
}
}