[tmhedberg]

As far as I know, the "ENT" in ENOENT refers specifically to a "dentry" (directory entry), i.e. the kernel data structure `struct dentry`, identified by a pathname in the virtual file system. It's not supposed to be a generic term for an entry in some arbitrary container of data.

I do see where you're coming from now, but I still think any usage other than the standard "no such file" meaning is errno abuse.

[ziffusion]

Seems reasonable enough. Can't help but wonder though, that a lot or the other errnos were probably also invented for very specific contexts, but find use in a wider sense because they capture a more generic error class.