What errors does FileManager throw?

Question

What are all the errors that can be thrown by FileManager's methods? Specifically, I'm interested in the errors throwable by attributesOfItem(atPath:).

This is how I want to use it:

do {
    let inode = try FileManager.default.attributesOfItem(atPath: somePath)[.systemFileNumber]
} catch SomeError.someSpecificError (let someContext) {
    /* implementation omitted... */
}

Answer 1

It can be like the following (see more file related constants in documentation for CocoaError)

do {
    let inode = try FileManager.default.attributesOfItem(atPath: somePath)[.systemFileNumber]
} catch CocoaError.fileNoSuchFile {
    print("Error: no such file exists")
} catch CocoaError.fileReadNoPermission {
    print("Error: you don't have permissions")
} catch {
    // something unknown
}