Add name_hash to files_struct. Set within fsp_set_smb_fname().

3 files changed, 35 insertions, 1 deletions

diff --git a/source3/include/proto.h b/source3/include/proto.h
index 29dbcc9763..fafcf6be52 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -4764,6 +4764,8 @@ files_struct *file_fsp(struct smb_request *req, uint16 fid);
 NTSTATUS dup_file_fsp(struct smb_request *req, files_struct *from,
 		      uint32 access_mask, uint32 share_access,
 		      uint32 create_options, files_struct *to);
+NTSTATUS file_name_hash(connection_struct *conn,
+			const char *name, uint32_t *p_name_hash);
 NTSTATUS fsp_set_smb_fname(struct files_struct *fsp,
 			   const struct smb_filename *smb_fname_in);
 
diff --git a/source3/include/smb.h b/source3/include/smb.h
index 1a76691a44..6cfb6307d0 100644
--- a/source3/include/smb.h
+++ b/source3/include/smb.h
@@ -346,6 +346,7 @@ typedef struct files_struct {
 	bool posix_open;
 	bool is_sparse;
 	struct smb_filename *fsp_name;
+	uint32_t name_hash;		/* Jenkins hash of full pathname. */
 
 	struct vfs_fsp_data *vfs_extension;
 	struct fake_file_handle *fake_file_handle;
diff --git a/source3/smbd/files.c b/source3/smbd/files.c
index 7275868ffa..f01da2c8a2 100644
--- a/source3/smbd/files.c
+++ b/source3/smbd/files.c
@@ -591,6 +591,35 @@ NTSTATUS dup_file_fsp(struct smb_request *req, files_struct *from,
 }
 
 /**
+ * Return a jenkins hash of a pathname on a connection.
+ */
+
+NTSTATUS file_name_hash(connection_struct *conn,
+			const char *name, uint32_t *p_name_hash)
+{
+	TDB_DATA key;
+	char *fullpath = NULL;
+
+	/* Set the hash of the full pathname. */
+	fullpath = talloc_asprintf(talloc_tos(),
+			"%s/%s",
+			conn->connectpath,
+			name);
+	if (!fullpath) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	key = string_term_tdb_data(fullpath);
+	*p_name_hash = tdb_jenkins_hash(&key);
+
+	DEBUG(10,("file_name_hash: %s hash 0x%x\n",
+		fullpath,
+		(unsigned int)*p_name_hash ));
+
+	TALLOC_FREE(fullpath);
+	return NT_STATUS_OK;
+}
+
+/**
  * The only way that the fsp->fsp_name field should ever be set.
  */
 NTSTATUS fsp_set_smb_fname(struct files_struct *fsp,
@@ -607,5 +636,7 @@ NTSTATUS fsp_set_smb_fname(struct files_struct *fsp,
 	TALLOC_FREE(fsp->fsp_name);
 	fsp->fsp_name = smb_fname_new;
 
-	return NT_STATUS_OK;
+	return file_name_hash(fsp->conn,
+			smb_fname_str_dbg(fsp->fsp_name),
+			&fsp->name_hash);
 }