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The existing implementation of NameSpace implicitly assumes that a FileSystem with a directory at the top will be mounted at the root mount point "/" of the NameSpace. If this is not the case, then Stat("/") will fail even if ReadDir("/") succeedes. This is unexpected behavior which breaks directory traversal routines (eg. http.FileServer). This CL adds an unexported implementation of FileSystem called emptyVFS that emulates an empty directory and adds a NewNameSpace() function that binds emptyVFS to "/" so that unexpected behavior does not arise even if the use does not mount anything explicitly at "/". Latest patch set causes the FileInfo of the empty top level emulated directory to return "/" for Name() and Zero Time for ModTime() and removes the related struct state fields being used in the previous implementation. Fixes golang/go#14190 Change-Id: Idce2fc3c9b81206847a33840d76b660059d53d18 Reviewed-on: https://go-review.googlesource.com/19445 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> |
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gatefs | ||
httpfs | ||
mapfs | ||
zipfs | ||
emptyvfs_test.go | ||
emptyvfs.go | ||
namespace.go | ||
os.go | ||
vfs.go |