Show dirs known to exist instead of Permission denied.

[ole-tange]

I hate that I cannot access all files that a normal filemanager has access to in a single namespace using sshfs.

I understand that I can use SAF to select which folder to access, but I would much rather access everything in one go.

So I propose a slightly modified "Plain old filesystem": Identify all the paths that can be accessed by the user and present those in a single namespace. For dirs that you do not have -r right to, assume it is empty apart from the dirs that we know must exist.

For example: When starting the server it tests "well-known" paths, such as /storage/emulated/0. Let us assume it exists and is readable/writable by the user. Let us assume / and /storage/emulated/ only have -x, so you cannot list the files in those dirs.

You can, however, determine that /storage and /storage/emulated/0 do exist, so instead of failing to list anyting in / and /storage/emulated list /storage and /storage/emulated/0 repectively.

In other words:

$ sshfs -p 1234 [email protected]:/ phone
$ cd phone
$ ls
(Here you would normally get: ls: reading directory '.': Permission denied)
storage
$ cd storage
$ ls
0F74-0C3F  emulated  self
$ cd emulated
(Here you would normally get: ls: reading directory '.': Permission denied)
0
$ cd 0
$ ls Android
data  media  obb

This way you would be able to do things like:

du phone

and get the usage of both /storage/emulated/0 an /storage/0F74-0C3F.

Without rooting the phone I understand this cannot be perfect: You cannot know if someone has created /storage2 that you have full access to. But you can at least try all the "well-known" paths and see which of these exist. I believe Android also has a way to list the paths of some user dirs, and it will be natural to test if these exist, too.

[wolpi]

That is a little similar to VirtualFolders just added recently
be15f50

[lmagyar]

#352 fixed this in 7.2. Also these "injected" folders and their parents got r and x mode flags enabled to make them "friendly" to file-managers and sshfs. Note: it is possible to add other "known to exists" folders.

So I think this issue can be closed.

[wolpi]

And it is released already