Disk quotas and the like: is there a standard?

[Guy Harris]

>I don't know about POSIX;

They're not part of any current POSIX standard I know of (well, the only
current one, as opposed to "under development" one, is 1003.1).

Since 1003.1 is a standard to which applications are written, and since
most general applications (as opposed to administrative utilities) don't
manipulate quotas, the only thing 1003.1 would want to say about quotas
is "the following calls may fail due to disk quotas being exceeded, and
they set 'errno' to EDQUOT if that happens".   However, it doesn't
happen to say that.