borg: Avoid trying to extract xattrs, ACLS, and bsdflags

when retrieving from a borg repository

That broke restoring on linux from a borg backup made on OSX.

Sponsored-by: Boyd Stephen Smith Jr. on Patreon

CHANGELOG

@@ -1,3 +1,10 @@
+git-annex (8.20210904) UNRELEASED; urgency=medium
+
+  * borg: Avoid trying to extract xattrs, ACLS, and bsdflags when
+    retrieving from a borg repository.
+
+ -- Joey Hess <id@joeyh.name>  Fri, 03 Sep 2021 12:02:55 -0400
+
 git-annex (8.20210903) upstream; urgency=medium
 
   * Deal with clock skew, both forwards and backwards, when logging

Remote/Borg.hs

@@ -360,6 +360,15 @@ retrieveExportWithContentIdentifierM borgrepo loc _ dest mkk _ = do
 		absborgrepo <- absBorgRepo borgrepo
 		let p = proc "borg" $ toCommand
 			[ Param "extract"
+			-- git-annex object files do not need any
+			-- xattrs or ACLs, and trying to extract
+			-- any that are set from the backup can lead
+			-- to problems when doing a retrieve from a
+			-- different OS than the one where the backup was
+			-- made.
+			, Param "--noxattrs"
+			, Param "--noacls"
+			, Param "--nobsdflags"
 			, Param (borgArchive absborgrepo archivename)
 			, File (fromRawFilePath archivefile)
 			]

doc/forum/Borg_and_xattrs/comment_1_703c9a9be1e0b0ca9ce4dd0309546a04._comment

@@ -0,0 +1,8 @@
+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 1"""
+ date="2021-09-03T16:07:53Z"
+ content="""
+I see no reason for it to need to preserve xattrs or ACLs.
+I've changed it to disable extracting those.
+"""]]