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HDFS-10745. Directly resolve paths into INodesInPath. Contributed by Daryn Sharp.

This commit is contained in:
Kihwal Lee 2016-08-18 12:37:57 -05:00
parent d464483bf7
commit 922d045e11
16 changed files with 227 additions and 221 deletions
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29
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAclOp.java
View File

@ -25,7 +25,6 @@ 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.AclException;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
import java.io.IOException;
@ -39,11 +38,11 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
iip = fsd.getINodesInPath4Write(FSDirectory.normalizePath(src), true);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
fsd.checkOwner(pc, iip);
INode inode = FSDirectory.resolveLastINode(iip);
int snapshotId = iip.getLatestSnapshotId();
@ -64,11 +63,11 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
iip = fsd.getINodesInPath4Write(FSDirectory.normalizePath(src), true);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
fsd.checkOwner(pc, iip);
INode inode = FSDirectory.resolveLastINode(iip);
int snapshotId = iip.getLatestSnapshotId();
@ -88,11 +87,11 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
iip = fsd.getINodesInPath4Write(FSDirectory.normalizePath(src), true);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
fsd.checkOwner(pc, iip);
INode inode = FSDirectory.resolveLastINode(iip);
int snapshotId = iip.getLatestSnapshotId();
@ -112,11 +111,11 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
iip = fsd.getINodesInPath4Write(src);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
fsd.checkOwner(pc, iip);
unprotectedRemoveAcl(fsd, iip);
} finally {
@ -132,11 +131,11 @@ class FSDirAclOp {
String src = srcArg;
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
INodesInPath iip;
fsd.writeLock();
try {
iip = fsd.getINodesInPath4Write(src);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
fsd.checkOwner(pc, iip);
List<AclEntry> newAcl = unprotectedSetAcl(fsd, src, aclSpec, false);
fsd.getEditLog().logSetAcl(src, newAcl);
@ -150,17 +149,15 @@ class FSDirAclOp {
FSDirectory fsd, String src) throws IOException {
checkAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
String srcs = FSDirectory.normalizePath(src);
fsd.readLock();
try {
INodesInPath iip = fsd.resolvePath(pc, src);
src = iip.getPath();
// There is no real inode for the path ending in ".snapshot", so return a
// non-null, unpopulated AclStatus. This is similar to getFileInfo.
if (srcs.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR) &&
fsd.getINode4DotSnapshot(srcs) != null) {
if (iip.isDotSnapshotDir() && fsd.getINode4DotSnapshot(iip) != null) {
return new AclStatus.Builder().owner("").group("").build();
}
INodesInPath iip = fsd.getINodesInPath(srcs, true);
if (fsd.isPermissionEnabled()) {
fsd.checkTraverse(pc, iip);
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirAppendOp.java
View File

@ -87,8 +87,8 @@ final class FSDirAppendOp {
final String src;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, srcArg);
final INodesInPath iip = fsd.getINodesInPath4Write(src);
final INodesInPath iip = fsd.resolvePathForWrite(pc, srcArg);
src = iip.getPath();
// Verify that the destination does not exist as a directory already
final INode inode = iip.getLastINode();
final String path = iip.getPath();

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

@ -60,8 +60,8 @@ public class FSDirAttrOp {
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
fsd.checkOwner(pc, iip);
unprotectedSetPermission(fsd, src, permission);
} finally {
@ -81,8 +81,8 @@ public class FSDirAttrOp {
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
fsd.checkOwner(pc, iip);
if (!pc.isSuperUser()) {
if (username != null && !pc.getUser().equals(username)) {
@ -108,8 +108,8 @@ public class FSDirAttrOp {
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
// Write access is required to set access and modification times
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.WRITE);
@ -138,8 +138,8 @@ public class FSDirAttrOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath4Write(src);
final INodesInPath iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.WRITE);
}
@ -211,8 +211,7 @@ public class FSDirAttrOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
fsd.readLock();
try {
path = fsd.resolvePath(pc, path);
final INodesInPath iip = fsd.getINodesInPath(path, false);
final INodesInPath iip = fsd.resolvePath(pc, path, false);
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.READ);
}
@ -232,8 +231,8 @@ public class FSDirAttrOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
fsd.readLock();
try {
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, false);
final INodesInPath iip = fsd.resolvePath(pc, src, false);
src = iip.getPath();
if (fsd.isPermissionEnabled()) {
fsd.checkTraverse(pc, iip);
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirDeleteOp.java
View File

@ -98,8 +98,8 @@ class FSDirDeleteOp {
FSDirectory fsd = fsn.getFSDirectory();
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath4Write(src, false);
final INodesInPath iip = fsd.resolvePathForWrite(pc, src, false);
src = iip.getPath();
if (!recursive && fsd.isNonEmptyDirectory(iip)) {
throw new PathIsNotEmptyDirectoryException(src + " is non empty");
}

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirEncryptionZoneOp.java
View File

@ -155,7 +155,8 @@ final class FSDirEncryptionZoneOp {
fsd.writeLock();
try {
src = fsd.resolvePath(pc, srcArg);
final INodesInPath iip = fsd.resolvePath(pc, srcArg);
src = iip.getPath();
final XAttr ezXAttr = fsd.ezManager.createEncryptionZone(src, suite,
version, keyName);
xAttrs.add(ezXAttr);
@ -178,13 +179,11 @@ final class FSDirEncryptionZoneOp {
static Map.Entry<EncryptionZone, HdfsFileStatus> getEZForPath(
final FSDirectory fsd, final String srcArg, final FSPermissionChecker pc)
throws IOException {
final String src;
final INodesInPath iip;
final EncryptionZone ret;
fsd.readLock();
try {
src = fsd.resolvePath(pc, srcArg);
iip = fsd.getINodesInPath(src, true);
iip = fsd.resolvePath(pc, srcArg);
if (iip.getLastINode() == null) {
throw new FileNotFoundException("Path not found: " + iip.getPath());
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirMkdirOp.java
View File

@ -52,8 +52,8 @@ class FSDirMkdirOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src);
INodesInPath iip = fsd.getINodesInPath4Write(src);
INodesInPath iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
if (fsd.isPermissionEnabled()) {
fsd.checkTraverse(pc, iip);
}

41
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirRenameOp.java
View File

@ -65,12 +65,14 @@ class FSDirRenameOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
HdfsFileStatus resultingStat = null;
src = fsd.resolvePath(pc, src);
dst = fsd.resolvePath(pc, dst);
// Rename does not operate on link targets
// Do not resolveLink when checking permissions of src and dst
INodesInPath srcIIP = fsd.resolvePathForWrite(pc, src, false);
INodesInPath dstIIP = fsd.resolvePathForWrite(pc, dst, false);
@SuppressWarnings("deprecation")
final boolean status = renameTo(fsd, pc, src, dst, logRetryCache);
final boolean status = renameTo(fsd, pc, srcIIP, dstIIP, logRetryCache);
if (status) {
INodesInPath dstIIP = fsd.getINodesInPath(dst, false);
dstIIP = fsd.getINodesInPath(dstIIP.getPath(), false);
resultingStat = fsd.getAuditFileInfo(dstIIP);
}
return new RenameOldResult(status, resultingStat);
@ -238,9 +240,8 @@ class FSDirRenameOp {
final FSPermissionChecker pc = fsd.getPermissionChecker();
BlocksMapUpdateInfo collectedBlocks = new BlocksMapUpdateInfo();
src = fsd.resolvePath(pc, src);
dst = fsd.resolvePath(pc, dst);
renameTo(fsd, pc, src, dst, collectedBlocks, logRetryCache, options);
// returns resolved path
dst = renameTo(fsd, pc, src, dst, collectedBlocks, logRetryCache, options);
INodesInPath dstIIP = fsd.getINodesInPath(dst, false);
HdfsFileStatus resultingStat = fsd.getAuditFileInfo(dstIIP);
@ -252,11 +253,13 @@ class FSDirRenameOp {
* @see {@link #unprotectedRenameTo(FSDirectory, String, String, INodesInPath,
* INodesInPath, long, BlocksMapUpdateInfo, Options.Rename...)}
*/
static void renameTo(FSDirectory fsd, FSPermissionChecker pc, String src,
static String renameTo(FSDirectory fsd, FSPermissionChecker pc, String src,
String dst, BlocksMapUpdateInfo collectedBlocks, boolean logRetryCache,
Options.Rename... options) throws IOException {
final INodesInPath srcIIP = fsd.getINodesInPath4Write(src, false);
final INodesInPath dstIIP = fsd.getINodesInPath4Write(dst, false);
final INodesInPath srcIIP = fsd.resolvePathForWrite(pc, src, false);
final INodesInPath dstIIP = fsd.resolvePathForWrite(pc, dst, false);
src = srcIIP.getPath();
dst = dstIIP.getPath();
if (fsd.isPermissionEnabled()) {
// Rename does not operate on link targets
// Do not resolveLink when checking permissions of src and dst
@ -283,6 +286,7 @@ class FSDirRenameOp {
fsd.writeUnlock();
}
fsd.getEditLog().logRename(src, dst, mtime, logRetryCache, options);
return dst;
}
/**
@ -442,16 +446,17 @@ class FSDirRenameOp {
@Deprecated
@SuppressWarnings("deprecation")
private static boolean renameTo(FSDirectory fsd, FSPermissionChecker pc,
String src, String dst, boolean logRetryCache) throws IOException {
// Rename does not operate on link targets
// Do not resolveLink when checking permissions of src and dst
// Check write access to parent of src
final INodesInPath srcIIP = fsd.getINodesInPath4Write(src, false);
INodesInPath srcIIP, INodesInPath dstIIP, boolean logRetryCache)
throws IOException {
String src = srcIIP.getPath();
String dst = dstIIP.getPath();
// Note: We should not be doing this. This is move() not renameTo().
final String actualDst = fsd.isDir(dst) ?
dst + Path.SEPARATOR + new Path(src).getName() : dst;
final INodesInPath dstIIP = fsd.getINodesInPath4Write(actualDst, false);
if (fsd.isDir(dst)) {
dstIIP = INodesInPath.append(dstIIP, null, srcIIP.getLastLocalName());
}
final String actualDst = dstIIP.getPath();
if (fsd.isPermissionEnabled()) {
// Check write access to parent of src
fsd.checkPermission(pc, srcIIP, false, null, FsAction.WRITE, null, null,
false);
// Check write access to ancestor of dst

51
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirStatAndListingOp.java
View File

@ -53,11 +53,14 @@ class FSDirStatAndListingOp {
final String startAfterString = DFSUtil.bytes2String(startAfter);
String src = null;
final INodesInPath iip;
if (fsd.isPermissionEnabled()) {
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, srcArg);
iip = fsd.resolvePath(pc, srcArg);
src = iip.getPath();
} else {
src = FSDirectory.resolvePath(srcArg, fsd);
iip = fsd.getINodesInPath(src, true);
}
// Get file name when startAfter is an INodePath
@ -73,7 +76,6 @@ class FSDirStatAndListingOp {
}
}
final INodesInPath iip = fsd.getINodesInPath(src, true);
boolean isSuperUser = true;
if (fsd.isPermissionEnabled()) {
FSPermissionChecker pc = fsd.getPermissionChecker();
@ -106,8 +108,8 @@ class FSDirStatAndListingOp {
}
if (fsd.isPermissionEnabled()) {
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, srcArg);
final INodesInPath iip = fsd.getINodesInPath(src, resolveLink);
final INodesInPath iip = fsd.resolvePath(pc, srcArg, resolveLink);
src = iip.getPath();
fsd.checkPermission(pc, iip, false, null, null, null, null, false);
} else {
src = FSDirectory.resolvePath(srcArg, fsd);
@ -121,8 +123,7 @@ class FSDirStatAndListingOp {
*/
static boolean isFileClosed(FSDirectory fsd, String src) throws IOException {
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
final INodesInPath iip = fsd.resolvePath(pc, src);
if (fsd.isPermissionEnabled()) {
fsd.checkTraverse(pc, iip);
}
@ -132,8 +133,7 @@ class FSDirStatAndListingOp {
static ContentSummary getContentSummary(
FSDirectory fsd, String src) throws IOException {
FSPermissionChecker pc = fsd.getPermissionChecker();
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, false);
final INodesInPath iip = fsd.resolvePath(pc, src, false);
if (fsd.isPermissionEnabled()) {
fsd.checkPermission(pc, iip, false, null, null, null,
FsAction.READ_EXECUTE);
@ -158,8 +158,8 @@ class FSDirStatAndListingOp {
boolean isReservedName = FSDirectory.isReservedRawName(src);
fsd.readLock();
try {
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
final INodesInPath iip = fsd.resolvePath(pc, src);
src = iip.getPath();
final INodeFile inode = INodeFile.valueOf(iip.getLastINode(), src);
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.READ);
@ -386,24 +386,20 @@ class FSDirStatAndListingOp {
static HdfsFileStatus getFileInfo(
FSDirectory fsd, String src, boolean resolveLink, boolean isRawPath)
throws IOException {
String srcs = FSDirectory.normalizePath(src);
if (FSDirectory.isExactReservedName(src)) {
return FSDirectory.DOT_RESERVED_STATUS;
}
if (srcs.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR)) {
if (fsd.getINode4DotSnapshot(srcs) != null) {
return new HdfsFileStatus(0, true, 0, 0, 0, 0, null, null, null, null,
HdfsFileStatus.EMPTY_NAME, -1L, 0, null,
HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED);
}
return null;
}
fsd.readLock();
try {
final INodesInPath iip = fsd.getINodesInPath(srcs, resolveLink);
return getFileInfo(fsd, src, iip, isRawPath, true);
HdfsFileStatus status = null;
final INodesInPath iip = fsd.getINodesInPath(src, resolveLink);
if (FSDirectory.isExactReservedName(iip.getPathComponents())) {
status = FSDirectory.DOT_RESERVED_STATUS;
} else if (iip.isDotSnapshotDir()) {
if (fsd.getINode4DotSnapshot(iip) != null) {
status = FSDirectory.DOT_SNAPSHOT_DIR_STATUS;
}
} else {
status = getFileInfo(fsd, src, iip, isRawPath, true);
}
return status;
} finally {
fsd.readUnlock();
}
@ -614,8 +610,7 @@ class FSDirStatAndListingOp {
final INodesInPath iip;
fsd.readLock();
try {
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath(src, false);
iip = fsd.resolvePath(pc, src, false);
if (fsd.isPermissionEnabled()) {
fsd.checkPermission(pc, iip, false, null, null, null,
FsAction.READ_EXECUTE);

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirSymlinkOp.java
View File

@ -56,8 +56,8 @@ class FSDirSymlinkOp {
INodesInPath iip;
fsd.writeLock();
try {
link = fsd.resolvePath(pc, link);
iip = fsd.getINodesInPath4Write(link, false);
iip = fsd.resolvePathForWrite(pc, link, false);
link = iip.getPath();
if (!createParent) {
fsd.verifyParentDir(iip, link);
}

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirTruncateOp.java
View File

@ -77,8 +77,8 @@ final class FSDirTruncateOp {
Block truncateBlock = null;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, srcArg);
iip = fsd.getINodesInPath4Write(src, true);
iip = fsd.resolvePathForWrite(pc, srcArg);
src = iip.getPath();
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.WRITE);
}

84
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirWriteFileOp.java
View File

@ -39,7 +39,6 @@ import org.apache.hadoop.hdfs.protocol.ClientProtocol;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.EncryptionZone;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
@ -116,25 +115,10 @@ class FSDirWriteFileOp {
static void abandonBlock(
FSDirectory fsd, FSPermissionChecker pc, ExtendedBlock b, long fileId,
String src, String holder) throws IOException {
src = fsd.resolvePath(pc, src);
final INode inode;
final INodesInPath iip;
if (fileId == HdfsConstants.GRANDFATHER_INODE_ID) {
// Older clients may not have given us an inode ID to work with.
// In this case, we have to try to resolve the path and hope it
// hasn't changed or been deleted since the file was opened for write.
iip = fsd.getINodesInPath(src, true);
inode = iip.getLastINode();
} else {
inode = fsd.getInode(fileId);
iip = INodesInPath.fromINode(inode);
if (inode != null) {
src = iip.getPath();
}
}
final INodesInPath iip = fsd.resolvePath(pc, src, fileId);
src = iip.getPath();
FSNamesystem fsn = fsd.getFSNamesystem();
final INodeFile file = fsn.checkLease(src, holder, inode, fileId);
final INodeFile file = fsn.checkLease(iip, holder, fileId);
Preconditions.checkState(file.isUnderConstruction());
Block localBlock = ExtendedBlock.getLocalBlock(b);
@ -177,8 +161,8 @@ class FSDirWriteFileOp {
final byte storagePolicyID;
String clientMachine;
src = fsn.dir.resolvePath(pc, src);
FileState fileState = analyzeFileState(fsn, src, fileId, clientName,
INodesInPath iip = fsn.dir.resolvePath(pc, src, fileId);
FileState fileState = analyzeFileState(fsn, iip, fileId, clientName,
previous, onRetryBlock);
if (onRetryBlock[0] != null && onRetryBlock[0].getLocations().length > 0) {
// This is a retry. No need to generate new locations.
@ -228,7 +212,8 @@ class FSDirWriteFileOp {
// Run the full analysis again, since things could have changed
// while chooseTarget() was executing.
LocatedBlock[] onRetryBlock = new LocatedBlock[1];
FileState fileState = analyzeFileState(fsn, src, fileId, clientName,
INodesInPath iip = fsn.dir.resolvePath(null, src, fileId);
FileState fileState = analyzeFileState(fsn, iip, fileId, clientName,
previous, onRetryBlock);
final INodeFile pendingFile = fileState.inode;
src = fileState.path;
@ -339,8 +324,8 @@ class FSDirWriteFileOp {
boolean isRawPath = FSDirectory.isReservedRawName(src);
FSDirectory fsd = fsn.getFSDirectory();
src = fsd.resolvePath(pc, src);
INodesInPath iip = fsd.getINodesInPath4Write(src);
INodesInPath iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
// Verify that the destination does not exist as a directory already.
final INode inode = iip.getLastINode();
@ -449,8 +434,7 @@ class FSDirWriteFileOp {
CryptoProtocolVersion[] supportedVersions)
throws IOException {
FSDirectory fsd = fsn.getFSDirectory();
src = fsd.resolvePath(pc, src);
INodesInPath iip = fsd.getINodesInPath4Write(src);
INodesInPath iip = fsd.resolvePathForWrite(pc, src);
// Nothing to do if the path is not within an EZ
final EncryptionZone zone = FSDirEncryptionZoneOp.getEZForPath(fsd, iip);
if (zone == null) {
@ -583,11 +567,11 @@ class FSDirWriteFileOp {
}
private static FileState analyzeFileState(
FSNamesystem fsn, String src, long fileId, String clientName,
FSNamesystem fsn, INodesInPath iip, long fileId, String clientName,
ExtendedBlock previous, LocatedBlock[] onRetryBlock)
throws IOException {
assert fsn.hasReadLock();
String src = iip.getPath();
checkBlock(fsn, previous);
onRetryBlock[0] = null;
fsn.checkNameNodeSafeMode("Cannot add block to " + src);
@ -596,24 +580,7 @@ class FSDirWriteFileOp {
fsn.checkFsObjectLimit();
Block previousBlock = ExtendedBlock.getLocalBlock(previous);
final INode inode;
final INodesInPath iip;
if (fileId == HdfsConstants.GRANDFATHER_INODE_ID) {
// Older clients may not have given us an inode ID to work with.
// In this case, we have to try to resolve the path and hope it
// hasn't changed or been deleted since the file was opened for write.
iip = fsn.dir.getINodesInPath4Write(src);
inode = iip.getLastINode();
} else {
// Newer clients pass the inode ID, so we can just get the inode
// directly.
inode = fsn.dir.getInode(fileId);
iip = INodesInPath.fromINode(inode);
if (inode != null) {
src = iip.getPath();
}
}
final INodeFile file = fsn.checkLease(src, clientName, inode, fileId);
final INodeFile file = fsn.checkLease(iip, clientName, fileId);
BlockInfo lastBlockInFile = file.getLastBlock();
if (!Block.matchingIdAndGenStamp(previousBlock, lastBlockInFile)) {
// The block that the client claims is the current last block
@ -692,8 +659,8 @@ class FSDirWriteFileOp {
src + " for " + holder);
}
checkBlock(fsn, last);
src = fsn.dir.resolvePath(pc, src);
boolean success = completeFileInternal(fsn, src, holder,
INodesInPath iip = fsn.dir.resolvePath(pc, src, fileId);
boolean success = completeFileInternal(fsn, iip, holder,
ExtendedBlock.getLocalBlock(last),
fileId);
if (success) {
@ -704,27 +671,16 @@ class FSDirWriteFileOp {
}
private static boolean completeFileInternal(
FSNamesystem fsn, String src, String holder, Block last, long fileId)
FSNamesystem fsn, INodesInPath iip,
String holder, Block last, long fileId)
throws IOException {
assert fsn.hasWriteLock();
final String src = iip.getPath();
final INodeFile pendingFile;
final INodesInPath iip;
INode inode = null;
try {
if (fileId == HdfsConstants.GRANDFATHER_INODE_ID) {
// Older clients may not have given us an inode ID to work with.
// In this case, we have to try to resolve the path and hope it
// hasn't changed or been deleted since the file was opened for write.
iip = fsn.dir.getINodesInPath(src, true);
inode = iip.getLastINode();
} else {
inode = fsn.dir.getInode(fileId);
iip = INodesInPath.fromINode(inode);
if (inode != null) {
src = iip.getPath();
}
}
pendingFile = fsn.checkLease(src, holder, inode, fileId);
inode = iip.getLastINode();
pendingFile = fsn.checkLease(iip, holder, fileId);
} catch (LeaseExpiredException lee) {
if (inode != null && inode.isFile() &&
!inode.asFile().isUnderConstruction()) {

25
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirXAttrOp.java
View File

@ -67,13 +67,13 @@ class FSDirXAttrOp {
FSPermissionChecker pc = fsd.getPermissionChecker();
XAttrPermissionFilter.checkPermissionForApi(
pc, xAttr, FSDirectory.isReservedRawName(src));
src = fsd.resolvePath(pc, src);
List<XAttr> xAttrs = Lists.newArrayListWithCapacity(1);
xAttrs.add(xAttr);
INodesInPath iip;
fsd.writeLock();
try {
iip = fsd.getINodesInPath4Write(src);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
checkXAttrChangeAccess(fsd, iip, xAttr, pc);
unprotectedSetXAttrs(fsd, src, xAttrs, flag);
} finally {
@ -94,12 +94,11 @@ class FSDirXAttrOp {
if (!getAll) {
XAttrPermissionFilter.checkPermissionForApi(pc, xAttrs, isRawPath);
}
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
final INodesInPath iip = fsd.resolvePath(pc, src);
if (fsd.isPermissionEnabled()) {
fsd.checkPathAccess(pc, iip, FsAction.READ);
}
List<XAttr> all = FSDirXAttrOp.getXAttrs(fsd, src);
List<XAttr> all = FSDirXAttrOp.getXAttrs(fsd, iip);
List<XAttr> filteredAll = XAttrPermissionFilter.
filterXAttrsForApi(pc, all, isRawPath);
@ -134,13 +133,12 @@ class FSDirXAttrOp {
FSDirXAttrOp.checkXAttrsConfigFlag(fsd);
final FSPermissionChecker pc = fsd.getPermissionChecker();
final boolean isRawPath = FSDirectory.isReservedRawName(src);
src = fsd.resolvePath(pc, src);
final INodesInPath iip = fsd.getINodesInPath(src, true);
final INodesInPath iip = fsd.resolvePath(pc, src);
if (fsd.isPermissionEnabled()) {
/* To access xattr names, you need EXECUTE in the owning directory. */
fsd.checkParentAccess(pc, iip, FsAction.EXECUTE);
}
final List<XAttr> all = FSDirXAttrOp.getXAttrs(fsd, src);
final List<XAttr> all = FSDirXAttrOp.getXAttrs(fsd, iip);
return XAttrPermissionFilter.
filterXAttrsForApi(pc, all, isRawPath);
}
@ -167,8 +165,8 @@ class FSDirXAttrOp {
INodesInPath iip;
fsd.writeLock();
try {
src = fsd.resolvePath(pc, src);
iip = fsd.getINodesInPath4Write(src);
iip = fsd.resolvePathForWrite(pc, src);
src = iip.getPath();
checkXAttrChangeAccess(fsd, iip, xAttr, pc);
List<XAttr> removedXAttrs = unprotectedRemoveXAttrs(fsd, src, xAttrs);
@ -427,12 +425,11 @@ class FSDirXAttrOp {
}
}
private static List<XAttr> getXAttrs(FSDirectory fsd,
String src) throws IOException {
String srcs = FSDirectory.normalizePath(src);
private static List<XAttr> getXAttrs(FSDirectory fsd, INodesInPath iip)
throws IOException {
fsd.readLock();
try {
INodesInPath iip = fsd.getINodesInPath(srcs, true);
String src = iip.getPath();
INode inode = FSDirectory.resolveLastINode(iip);
int snapshotId = iip.getPathSnapshotId();
return XAttrStorage.readINodeXAttrs(fsd.getAttributes(src,

107
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
View File

@ -132,6 +132,11 @@ public class FSDirectory implements Closeable {
null, null, null, HdfsFileStatus.EMPTY_NAME, -1L, 0, null,
HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED);
public final static HdfsFileStatus DOT_SNAPSHOT_DIR_STATUS =
new HdfsFileStatus(0, true, 0, 0, 0, 0, null, null, null, null,
HdfsFileStatus.EMPTY_NAME, -1L, 0, null,
HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED);
INodeDirectory rootDir;
private final FSNamesystem namesystem;
private volatile boolean skipQuotaCheck = false; //skip while consuming edits
@ -526,12 +531,66 @@ public class FSDirectory implements Closeable {
* @throws FileNotFoundException
* @throws AccessControlException
*/
String resolvePath(FSPermissionChecker pc, String path)
throws FileNotFoundException, AccessControlException {
if (isReservedRawName(path) && isPermissionEnabled) {
INodesInPath resolvePath(FSPermissionChecker pc, String src)
throws UnresolvedLinkException, FileNotFoundException,
AccessControlException {
return resolvePath(pc, src, true);
}
INodesInPath resolvePath(FSPermissionChecker pc, String src,
boolean resolveLink) throws UnresolvedLinkException,
FileNotFoundException, AccessControlException {
byte[][] components = INode.getPathComponents(src);
if (isPermissionEnabled && pc != null && isReservedRawName(components)) {
pc.checkSuperuserPrivilege();
}
return resolvePath(path, this);
components = resolveComponents(components, this);
return INodesInPath.resolve(rootDir, components, resolveLink);
}
INodesInPath resolvePathForWrite(FSPermissionChecker pc, String src)
throws UnresolvedLinkException, FileNotFoundException,
AccessControlException {
return resolvePathForWrite(pc, src, true);
}
INodesInPath resolvePathForWrite(FSPermissionChecker pc, String src,
boolean resolveLink) throws UnresolvedLinkException,
FileNotFoundException, AccessControlException {
INodesInPath iip = resolvePath(pc, src, resolveLink);
if (iip.isSnapshot()) {
throw new SnapshotAccessControlException(
"Modification on a read-only snapshot is disallowed");
}
return iip;
}
INodesInPath resolvePath(FSPermissionChecker pc, String src, long fileId)
throws UnresolvedLinkException, FileNotFoundException,
AccessControlException {
// Older clients may not have given us an inode ID to work with.
// In this case, we have to try to resolve the path and hope it
// hasn't changed or been deleted since the file was opened for write.
INodesInPath iip;
if (fileId == HdfsConstants.GRANDFATHER_INODE_ID) {
iip = resolvePath(pc, src);
} else {
INode inode = getInode(fileId);
if (inode == null) {
iip = INodesInPath.fromComponents(INode.getPathComponents(src));
} else {
iip = INodesInPath.fromINode(inode);
}
}
return iip;
}
// this method can be removed after IIP is used more extensively
static String resolvePath(String src,
FSDirectory fsd) throws FileNotFoundException {
byte[][] pathComponents = INode.getPathComponents(src);
pathComponents = resolveComponents(pathComponents, fsd);
return DFSUtil.byteArray2PathString(pathComponents);
}
/**
@ -1305,6 +1364,12 @@ public class FSDirectory implements Closeable {
return CHECK_RESERVED_FILE_NAMES && src.equals(DOT_RESERVED_PATH_PREFIX);
}
public static boolean isExactReservedName(byte[][] components) {
return CHECK_RESERVED_FILE_NAMES &&
(components.length == 2) &&
isReservedName(components);
}
static boolean isReservedRawName(String src) {
return src.startsWith(DOT_RESERVED_PATH_PREFIX +
Path.SEPARATOR + RAW_STRING);
@ -1316,11 +1381,17 @@ public class FSDirectory implements Closeable {
}
static boolean isReservedName(byte[][] components) {
return (components.length > 2) &&
return (components.length > 1) &&
Arrays.equals(INodeDirectory.ROOT_NAME, components[0]) &&
Arrays.equals(DOT_RESERVED, components[1]);
}
static boolean isReservedRawName(byte[][] components) {
return (components.length > 2) &&
isReservedName(components) &&
Arrays.equals(RAW, components[2]);
}
/**
* Resolve a /.reserved/... path to a non-reserved path.
* <p/>
@ -1339,19 +1410,18 @@ public class FSDirectory implements Closeable {
* /.reserved/raw/a/b/c is equivalent (they both refer to the same
* unencrypted file).
*
* @param src path that is being processed
* @param pathComponents to be resolved
* @param fsd FSDirectory
* @return if the path indicates an inode, return path after replacing up to
* <inodeid> with the corresponding path of the inode, else the path
* in {@code src} as is. If the path refers to a path in the "raw"
* directory, return the non-raw pathname.
* in {@code pathComponents} as is. If the path refers to a path in
* the "raw" directory, return the non-raw pathname.
* @throws FileNotFoundException if inodeid is invalid
*/
static String resolvePath(String src,
static byte[][] resolveComponents(byte[][] pathComponents,
FSDirectory fsd) throws FileNotFoundException {
byte[][] pathComponents = INode.getPathComponents(src);
final int nComponents = pathComponents.length;
if (!isReservedName(pathComponents)) {
if (nComponents < 3 || !isReservedName(pathComponents)) {
/* This is not a /.reserved/ path so do nothing. */
} else if (Arrays.equals(DOT_INODES, pathComponents[2])) {
/* It's a /.reserved/.inodes path. */
@ -1372,9 +1442,7 @@ public class FSDirectory implements Closeable {
}
}
}
// this double conversion will be unnecessary when resolving returns
// INodesInPath (needs components byte[][])
return DFSUtil.byteArray2PathString(pathComponents);
return pathComponents;
}
private static byte[][] resolveDotInodesPath(
@ -1428,15 +1496,12 @@ public class FSDirectory implements Closeable {
return components;
}
INode getINode4DotSnapshot(String src) throws UnresolvedLinkException {
INode getINode4DotSnapshot(INodesInPath iip) throws UnresolvedLinkException {
Preconditions.checkArgument(
src.endsWith(HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR),
"%s does not end with %s", src, HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR);
iip.isDotSnapshotDir(), "%s does not end with %s",
iip.getPath(), HdfsConstants.SEPARATOR_DOT_SNAPSHOT_DIR);
final String dirPath = normalizePath(src.substring(0,
src.length() - HdfsConstants.DOT_SNAPSHOT_DIR.length()));
final INode node = this.getINode(dirPath);
final INode node = iip.getINode(-2);
if (node != null && node.isDirectory()
&& node.asDirectory().isSnapshottable()) {
return node;

49
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
View File

@ -1800,8 +1800,9 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
* HDFS-7463. A better fix is to change the edit log of SetTime to
* use inode id instead of a path.
*/
src = dir.resolvePath(pc, srcArg);
final INodesInPath iip = dir.getINodesInPath(src, true);
final INodesInPath iip = dir.resolvePath(pc, srcArg);
src = iip.getPath();
INode inode = iip.getLastINode();
boolean updateAccessTime = inode != null &&
now > inode.getAccessTime() + dir.getAccessTimePrecision();
@ -2276,8 +2277,8 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
try {
checkOperation(OperationCategory.WRITE);
checkNameNodeSafeMode("Cannot recover the lease of " + src);
src = dir.resolvePath(pc, src);
final INodesInPath iip = dir.getINodesInPath4Write(src);
final INodesInPath iip = dir.resolvePathForWrite(pc, src);
src = iip.getPath();
final INodeFile inode = INodeFile.valueOf(iip.getLastINode(), src);
if (!inode.isUnderConstruction()) {
return true;
@ -2526,20 +2527,11 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
checkOperation(OperationCategory.READ);
//check safe mode
checkNameNodeSafeMode("Cannot add datanode; src=" + src + ", blk=" + blk);
src = dir.resolvePath(pc, src);
final INodesInPath iip = dir.resolvePath(pc, src, fileId);
src = iip.getPath();
//check lease
final INode inode;
if (fileId == HdfsConstants.GRANDFATHER_INODE_ID) {
// Older clients may not have given us an inode ID to work with.
// In this case, we have to try to resolve the path and hope it
// hasn't changed or been deleted since the file was opened for write.
inode = dir.getINode(src);
} else {
inode = dir.getInode(fileId);
if (inode != null) src = inode.getFullPathName();
}
final INodeFile file = checkLease(src, clientName, inode, fileId);
final INodeFile file = checkLease(iip, clientName, fileId);
clientMachine = file.getFileUnderConstructionFeature().getClientMachine();
clientnode = blockManager.getDatanodeManager().getDatanodeByHost(clientMachine);
preferredblocksize = file.getPreferredBlockSize();
@ -2596,8 +2588,10 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
: "Holder " + holder + " does not have any open files.");
}
INodeFile checkLease(String src, String holder, INode inode, long fileId)
INodeFile checkLease(INodesInPath iip, String holder, long fileId)
throws LeaseExpiredException, FileNotFoundException {
String src = iip.getPath();
INode inode = iip.getLastINode();
assert hasReadLock();
if (inode == null) {
throw new FileNotFoundException("File does not exist: "
@ -3031,18 +3025,9 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
try {
checkOperation(OperationCategory.WRITE);
checkNameNodeSafeMode("Cannot fsync file " + src);
src = dir.resolvePath(pc, src);
final INode inode;
if (fileId == HdfsConstants.GRANDFATHER_INODE_ID) {
// Older clients may not have given us an inode ID to work with.
// In this case, we have to try to resolve the path and hope it
// hasn't changed or been deleted since the file was opened for write.
inode = dir.getINode(src);
} else {
inode = dir.getInode(fileId);
if (inode != null) src = inode.getFullPathName();
}
final INodeFile pendingFile = checkLease(src, clientName, inode, fileId);
INodesInPath iip = dir.resolvePath(pc, src, fileId);
src = iip.getPath();
final INodeFile pendingFile = checkLease(iip, clientName, fileId);
if (lastBlockLength > 0) {
pendingFile.getFileUnderConstructionFeature().updateLengthOfLastBlock(
pendingFile, lastBlockLength);
@ -6700,17 +6685,17 @@ public class FSNamesystem implements Namesystem, FSNamesystemMBean,
void checkAccess(String src, FsAction mode) throws IOException {
checkOperation(OperationCategory.READ);
FSPermissionChecker pc = getPermissionChecker();
readLock();
try {
checkOperation(OperationCategory.READ);
src = FSDirectory.resolvePath(src, dir);
final INodesInPath iip = dir.getINodesInPath(src, true);
final INodesInPath iip = dir.resolvePath(pc, src);
src = iip.getPath();
INode inode = iip.getLastINode();
if (inode == null) {
throw new FileNotFoundException("Path not found");
}
if (isPermissionEnabled) {
FSPermissionChecker pc = getPermissionChecker();
dir.checkPathAccess(pc, iip, mode);
}
} catch (AccessControlException e) {

8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodesInPath.java
View File

@ -73,6 +73,10 @@ public class INodesInPath {
return new INodesInPath(inodes, path);
}
static INodesInPath fromComponents(byte[][] components) {
return new INodesInPath(new INode[components.length], components);
}
/**
* Given some components, create a path name.
* @param components The path components
@ -434,6 +438,10 @@ public class INodesInPath {
return this.isSnapshot;
}
boolean isDotSnapshotDir() {
return isDotSnapshotDir(getLastLocalName());
}
private static String toString(INode inode) {
return inode == null? null: inode.getLocalName();
}

4
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFsck.java
View File

@ -24,7 +24,7 @@ import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.anyBoolean;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
@ -1204,7 +1204,7 @@ public class TestFsck {
when(fsName.getBlockManager()).thenReturn(blockManager);
when(fsName.getFSDirectory()).thenReturn(fsd);
when(fsd.getFSNamesystem()).thenReturn(fsName);
when(fsd.getINodesInPath(anyString(), anyBoolean())).thenReturn(iip);
when(fsd.resolvePath(any(FSPermissionChecker.class), anyString())).thenReturn(iip);
when(blockManager.getDatanodeManager()).thenReturn(dnManager);
NamenodeFsck fsck = new NamenodeFsck(conf, namenode, nettop, pmap, out,