[haiku-development] Re: [RFC] seek(SEEK_END) on block devices
- From: François Revol <revol@xxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Tue, 28 Oct 2014 15:32:52 +0100
On 28/10/2014 15:01, François Revol wrote:
> It seems like some programs now use lseek(SEEK_END) to determine block
> devices size, instead of non-portable ioctls() like BLKGETSIZE64.
>
> One such program is ddrescue.
>
> I'm wondering about adding support for it in the vfs.
>
> The POSIX specs are not really verbose on this, they don't really make
> it mandatory explicitely nor forbid it:
> http://pubs.opengroup.org/onlinepubs/009695399/functions/lseek.html
I actually patched ddrescue to use the proper ioctl instead but the
question still stands.
François.
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