There is a macFUSE bug that can result in an Input/output error - https://github.com/osxfuse/osxfuse/issues/45 when listing a directory. In most cases this doesn't cause any major issues, just a "ls: mount: Input/output error" message when running ls.
The problem is that the contentsOfDirectory(at:includingPropertiesForKeys:options:) now does not work, however, the contentsOfDirectory(atPath:) method does.
There appears to be a difference in how these methods handle errors, although the documentation doesn't seem to suggest this.
The following code returns an array of strings without an error:
FileManager.default.contentsOfDirectory(atPath: "/Users/user")
The following code results in an error:
FileManager.default.contentsOfDirectory(at: URL.init(fileURLWithPath:"/Users/user"), includingPropertiesForKeys: nil)
REPL:
$E3: NSError = domain: "NSCocoaErrorDomain" - code: 256 {
_userInfo = 3 key/value pairs {
[0] = {
key = "NSURL"
value = "file:///Users/user/mount"
}
[1] = {
key = "NSFilePath"
value = "/Users/user/mount"
}
[2] = {
key = "NSUnderlyingError"
value =
}
}
}
Xcode:
Error Domain=NSCocoaErrorDomain Code=256 "The file “mount” couldn’t be opened." UserInfo={NSURL=file:///Users/user/mount, NSFilePath=/Users/user/mount, NSUnderlyingError=0x600000289740 {Error Domain=NSPOSIXErrorDomain Code=5 "Input/output error”}}
Passing [] as the includingPropertiesForKeys value gives the same result.
It's also interesting that in the REPL the NSUnderlyingError value is missing.
