Re: [PATCH 3/3] Add a pair of system calls to make extended file stats available

[Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>]

On Tuesday 29 June 2010 22:03:15 David Howells wrote:
>         ssize_t ret = xstat(int dfd,
>                             const char *filename,
>                             unsigned atflag,
>                             struct xstat *buffer,
>                             size_t buflen);
> 
>         ssize_t ret = fxstat(int fd,
>                              struct xstat *buffer,
>                              size_t buflen);
> 
> 
> The dfd, filename, atflag and fd parameters indicate the file to query.  There
> is no equivalent of lstat() as that can be emulated with xstat(), passing 0
> instead of AT_SYMLINK_NOFOLLOW as atflag.

Do we actually need the fxstat variant? IIRC, some *at syscalls just
operate on dfd when filename==NULL, which would be trivial to do here.

	Arnd