SyncFile/SaveFile: default binary=False, just like open()

src/borg/cache.py

@@ -142,11 +142,11 @@ Chunk index:    {0.total_unique_chunks:20d} {0.total_chunks:20d}"""
         config.set('cache', 'version', '1')
         config.set('cache', 'repository', self.repository.id_str)
         config.set('cache', 'manifest', '')
-        with SaveFile(os.path.join(self.path, 'config'), binary=False) as fd:
+        with SaveFile(os.path.join(self.path, 'config')) as fd:
             config.write(fd)
         ChunkIndex().write(os.path.join(self.path, 'chunks').encode('utf-8'))
         os.makedirs(os.path.join(self.path, 'chunks.archive.d'))
-        with SaveFile(os.path.join(self.path, 'files')) as fd:
+        with SaveFile(os.path.join(self.path, 'files'), binary=True) as fd:
             pass  # empty file
 
     def _do_open(self):
@@ -213,7 +213,7 @@ Chunk index:    {0.total_unique_chunks:20d} {0.total_chunks:20d}"""
         if not self.txn_active:
             return
         if self.files is not None:
-            with SaveFile(os.path.join(self.path, 'files')) as fd:
+            with SaveFile(os.path.join(self.path, 'files'), binary=True) as fd:
                 for path_hash, item in self.files.items():
                     # Discard cached files with the newest mtime to avoid
                     # issues with filesystem snapshots and mtime precision
@@ -224,7 +224,7 @@ Chunk index:    {0.total_unique_chunks:20d} {0.total_chunks:20d}"""
         self.config.set('cache', 'timestamp', self.manifest.timestamp)
         self.config.set('cache', 'key_type', str(self.key.TYPE))
         self.config.set('cache', 'previous_location', self.repository._location.canonical_path())
-        with SaveFile(os.path.join(self.path, 'config'), binary=False) as fd:
+        with SaveFile(os.path.join(self.path, 'config')) as fd:
             self.config.write(fd)
         self.chunks.write(os.path.join(self.path, 'chunks').encode('utf-8'))
         os.rename(os.path.join(self.path, 'txn.active'),

src/borg/key.py

@@ -471,7 +471,7 @@ class KeyfileKey(KeyfileKeyBase):
 
     def save(self, target, passphrase):
         key_data = self._save(passphrase)
-        with SaveFile(target, binary=False) as fd:
+        with SaveFile(target) as fd:
             fd.write('%s %s\n' % (self.FILE_ID, bin_to_hex(self.repository_id)))
             fd.write(key_data)
             fd.write('\n')

src/borg/platform/base.py

@@ -80,10 +80,8 @@ class SyncFile:
     TODO: A Windows implementation should use CreateFile with FILE_FLAG_WRITE_THROUGH.
     """
 
-    def __init__(self, path, binary=True):
-        mode = 'x'
-        if binary:
-            mode += 'b'
+    def __init__(self, path, binary=False):
+        mode = 'xb' if binary else 'x'
         self.fd = open(path, mode)
         self.fileno = self.fd.fileno()
 
@@ -122,13 +120,13 @@ class SaveFile:
     Must be used as a context manager (defining the scope of the transaction).
 
     On a journaling file system the file contents are always updated
-    atomically and won't become corrupted, even on pure failures or
+    atomically and won't become corrupted, even on power failures or
     crashes (for caveats see SyncFile).
     """
 
     SUFFIX = '.tmp'
 
-    def __init__(self, path, binary=True):
+    def __init__(self, path, binary=False):
         self.binary = binary
         self.path = path
         self.tmppath = self.path + self.SUFFIX

src/borg/platform/linux.pyx

@@ -228,7 +228,7 @@ class SyncFile(BaseSyncFile):
     disk in the immediate future.
     """
 
-    def __init__(self, path, binary=True):
+    def __init__(self, path, binary=False):
         super().__init__(path, binary)
         self.offset = 0
         self.write_window = (16 * 1024 ** 2) & ~PAGE_MASK

src/borg/repository.py

@@ -160,7 +160,7 @@ class Repository:
 
     def save_config(self, path, config):
         config_path = os.path.join(path, 'config')
-        with SaveFile(config_path, binary=False) as fd:
+        with SaveFile(config_path) as fd:
             config.write(fd)
 
     def save_key(self, keydata):
@@ -731,7 +731,7 @@ class LoggedIO:
                 if not os.path.exists(dirname):
                     os.mkdir(dirname)
                     sync_dir(os.path.join(self.path, 'data'))
-            self._write_fd = SyncFile(self.segment_filename(self.segment))
+            self._write_fd = SyncFile(self.segment_filename(self.segment), binary=True)
             self._write_fd.write(MAGIC)
             self.offset = MAGIC_LEN
         return self._write_fd