/// <exception cref="System.IO.IOException"/>
internal static HdfsFileStatus GetFileInfo(FSDirectory fsd, string src, bool resolveLink
, bool isRawPath, bool includeStoragePolicy)
{
string srcs = FSDirectory.NormalizePath(src);
if (srcs.EndsWith(HdfsConstants.SeparatorDotSnapshotDir))
{
if (fsd.GetINode4DotSnapshot(srcs) != null)
{
return(new HdfsFileStatus(0, true, 0, 0, 0, 0, null, null, null, null, HdfsFileStatus
.EmptyName, -1L, 0, null, BlockStoragePolicySuite.IdUnspecified));
}
return(null);
}
fsd.ReadLock();
try
{
INodesInPath iip = fsd.GetINodesInPath(srcs, resolveLink);
return(GetFileInfo(fsd, src, iip, isRawPath, includeStoragePolicy));
}
finally
{
fsd.ReadUnlock();
}
}
/// <summary>
/// Currently we only support "ls /xxx/.snapshot" which will return all the
/// snapshots of a directory.
/// </summary>
/// <remarks>
/// Currently we only support "ls /xxx/.snapshot" which will return all the
/// snapshots of a directory. The FSCommand Ls will first call getFileInfo to
/// make sure the file/directory exists (before the real getListing call).
/// Since we do not have a real INode for ".snapshot", we return an empty
/// non-null HdfsFileStatus here.
/// </remarks>
/// <exception cref="Org.Apache.Hadoop.FS.UnresolvedLinkException"/>
private static HdfsFileStatus GetFileInfo4DotSnapshot(FSDirectory fsd, string src
)
{
if (fsd.GetINode4DotSnapshot(src) != null)
{
return(new HdfsFileStatus(0, true, 0, 0, 0, 0, null, null, null, null, HdfsFileStatus
.EmptyName, -1L, 0, null, BlockStoragePolicySuite.IdUnspecified));
}
return(null);
}
/// <exception cref="System.IO.IOException"/>
internal static AclStatus GetAclStatus(FSDirectory fsd, string src)
{
CheckAclsConfigFlag(fsd);
FSPermissionChecker pc = fsd.GetPermissionChecker();
byte[][] pathComponents = FSDirectory.GetPathComponentsForReservedPath(src);
src = fsd.ResolvePath(pc, src, pathComponents);
string srcs = FSDirectory.NormalizePath(src);
fsd.ReadLock();
try
{
// 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.SeparatorDotSnapshotDir) && fsd.GetINode4DotSnapshot
(srcs) != null)
{
return(new AclStatus.Builder().Owner(string.Empty).Group(string.Empty).Build());
}
INodesInPath iip = fsd.GetINodesInPath(srcs, true);
if (fsd.IsPermissionEnabled())
{
fsd.CheckTraverse(pc, iip);
}
INode inode = FSDirectory.ResolveLastINode(iip);
int snapshotId = iip.GetPathSnapshotId();
IList <AclEntry> acl = AclStorage.ReadINodeAcl(fsd.GetAttributes(src, inode.GetLocalNameBytes
(), inode, snapshotId));
FsPermission fsPermission = inode.GetFsPermission(snapshotId);
return(new AclStatus.Builder().Owner(inode.GetUserName()).Group(inode.GetGroupName
()).StickyBit(fsPermission.GetStickyBit()).SetPermission(fsPermission).AddEntries
(acl).Build());
}
finally
{
fsd.ReadUnlock();
}
}