Re: [BUG] Generic syscalls -- chmod vs. fchmodat

From: Arnd Bergmann
Date: Tue Jan 25 2011 - 13:21:40 EST

On Tuesday 25 January 2011 18:45:15 Roland McGrath wrote:
> I know of no reason to
> think that the current treatment of the empty string was ever intended at
> the creation of the *at interfaces.

I always assumed that this was done so that the *at syscalls can replace
both the ones that take a file descriptor (e.g. fstat) and the ones that
take a pathname (e.g. stat), which is sensible for the non-AT_FDCWD case,
although not documented in the man pages.

Treating the empty string special for AT_FDCWD is rather pointless, but
at least consistent.

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