Ignore stdout/stderr broken pipe errors

borg/archiver.py

@@ -22,7 +22,7 @@
     get_cache_dir, prune_within, prune_split, \
     Manifest, NoManifestError, remove_surrogates, update_excludes, format_archive, check_extension_modules, Statistics, \
     dir_is_tagged, bigint_to_int, ChunkerParams, CompressionSpec, PrefixSpec, is_slow_msgpack, yes, sysinfo, \
-    EXIT_SUCCESS, EXIT_WARNING, EXIT_ERROR, log_multi, PatternMatcher
+    EXIT_SUCCESS, EXIT_WARNING, EXIT_ERROR, log_multi, PatternMatcher, ErrorIgnoringTextIOWrapper
 from .logger import create_logger, setup_logging
 logger = create_logger()
 from .compress import Compressor, COMPR_BUFFER
@@ -1592,8 +1592,8 @@ def setup_signal_handlers():  # pragma: no cover
 def main():  # pragma: no cover
     # Make sure stdout and stderr have errors='replace') to avoid unicode
     # issues when print()-ing unicode file names
-    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, sys.stdout.encoding, 'replace', line_buffering=True)
-    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, sys.stderr.encoding, 'replace', line_buffering=True)
+    sys.stdout = ErrorIgnoringTextIOWrapper(sys.stdout.buffer, sys.stdout.encoding, 'replace', line_buffering=True)
+    sys.stderr = ErrorIgnoringTextIOWrapper(sys.stderr.buffer, sys.stderr.encoding, 'replace', line_buffering=True)
     setup_signal_handlers()
     archiver = Archiver()
     msg = None

borg/helpers.py

@@ -12,6 +12,8 @@
 import platform
 import time
 import unicodedata
+import io
+import errno
 
 import logging
 from .logger import create_logger
@@ -1089,3 +1091,27 @@ def log_multi(*msgs, level=logging.INFO):
         lines.extend(msg.splitlines())
     for line in lines:
         logger.log(level, line)
+
+
+class ErrorIgnoringTextIOWrapper(io.TextIOWrapper):
+    def read(self, n):
+        if not self.closed:
+            try:
+                return super().read(n)
+            except BrokenPipeError:
+                try:
+                    super().close()
+                except OSError:
+                    pass
+        return ''
+
+    def write(self, s):
+        if not self.closed:
+            try:
+                return super().write(s)
+            except BrokenPipeError:
+                try:
+                    super().close()
+                except OSError:
+                    pass
+        return len(s)