Behavior of copyTo/moveTo on mounts

[backbone87]

Several use cases... example structure:

• / <- LocalAdapter A
• /fileA1 <- file of A
• /dirA1 <- dir of A
• /dirA2 <- dir of A, LocalAdapter B mounted onto
• /dirA2/fileB1 <- file of B
• /dirA2/dirB1 <- dir of B
• /dirV1 <- LocalAdapter C mounted onto, does not exists in A
• /dirV1/fileC1 <- file of C
• /dirV1/dirC1 <- dir of C

What should happen on:

• mv dirV1 into dirA1
  • move mountpoint to dirA1/dirV1?
  • move dirV1/fileC1 to dirA1/dirV1/fileC1 and dirV1/dirC1 to dirA1/dirV1/dirC1?
• mv dirA2 into dirA1
• mv dirV1 over dirA1
• mv dirA2 over dirA1

[tristanlins]

Moving mount points is Forbidden. (It is also forbidden on unix systems)
Copying is allowed, but only if the target path is not a subpath of the source. (We need to make a general recursion protection here)