lib/fs: Properly handle case insensitive systems (fixes #1787, fixes #2739, fixes #5708)

With this change we emulate a case sensitive filesystem on top of
insensitive filesystems. This means we correctly pick up case-only renames
and throw a case conflict error when there would be multiple files differing
only in case.

This safety check has a small performance hit (about 20% more filesystem
operations when scanning for changes). The new advanced folder option
`caseSensitiveFS` can be used to disable the safety checks, retaining the
previous behavior on systems known to be fully case sensitive.

Co-authored-by: Jakob Borg <jakob@kastelo.net>

This commit is contained in:

Simon Frei

2020-07-28 11:15:11 +02:00

committed by

Jakob Borg

co-authored by

Jakob Borg

parent 21dd9d6b43

commit 932d8c69de

27 changed files with 1241 additions and 187 deletions

									
										lib/model/folder_test.go
									
		+1
		
												View File
												
				@@ -12,6 +12,7 @@ import (

					"testing"

					"github.com/d4l3k/messagediff"

					"github.com/syncthing/syncthing/lib/config"

				)