1 files changed, 67 insertions, 0 deletions
diff --git a/trappy/filesystem.py b/trappy/filesystem.py
new file mode 100644
index 0000000..0c4a57d
--- /dev/null
+++ b/trappy/filesystem.py
@@ -0,0 +1,67 @@
+#    Copyright 2017 Google, ARM Limited
+#
+# Licensed 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.
+#
+
+
+"""
+Definitions of filesystem (ext4) trace parsers
+registered by the FTrace class
+"""
+
+from trappy.base import Base
+from trappy.dynamic import register_ftrace_parser, register_dynamic_ftrace
+
+class FilesystemExt4Base(Base):
+    def generate_data_dict(self, data_str):
+        #filesystem traces are space delimited in the form:
+        #fieldA valueA fieldB valueB ...
+        data = data_str.split(' ')
+        return zip(data[0::2], data[1::2])
+
+    def finalize_object(self):
+        self.data_frame.rename(columns={'ino':'inode'}, inplace=True)
+
+
+class FilesystemExt4DaWriteBegin(FilesystemExt4Base):
+    """Corresponds to Linux kernel trace event ext4_da_write_begin"""
+
+    unique_word = "ext4_da_write_begin:"
+    """The unique word that will be matched in a trace line"""
+
+
+register_ftrace_parser(FilesystemExt4DaWriteBegin)
+
+class FilesystemExt4DaWriteEnd(FilesystemExt4Base):
+    """Corresponds to Linux kernel trace event ext4_da_write_end"""
+
+    unique_word = "ext4_da_write_end:"
+    """The unique word that will be matched in a trace line"""
+
+register_ftrace_parser(FilesystemExt4DaWriteEnd)
+
+class FilesystemExt4SyncFileEnter(FilesystemExt4Base):
+    """Corresponds to Linux kernel trace event ext4_sync_file_enter"""
+
+    unique_word = "ext4_sync_file_enter:"
+    """The unique word that will be matched in a trace line"""
+
+register_ftrace_parser(FilesystemExt4SyncFileEnter)
+
+class FilesystemExt4SyncFileExit(FilesystemExt4Base):
+    """Corresponds to Linux kernel trace event ext4_sync_file_exit"""
+
+    unique_word = "ext4_sync_file_exit:"
+    """The unique word that will be matched in a trace line"""
+
+register_ftrace_parser(FilesystemExt4SyncFileExit)