Re: Compatible fstat()

[Al Viro <viro@ftp.linux.org.uk>]

On Tue, Nov 08, 2005 at 12:10:25PM -0500, Parag Warudkar wrote:
> 
> On Nov 8, 2005, at 10:48 AM, linux-os ((Dick Johnson)) wrote:
> 
> >The Linux fstat() doesn't return any information number of blocks,
> >or the byte-length of a physical hard disk.
> 
> I don't think (f)stat returns size and blocks information about a  
> block device on any UNIX platform.
> 
> But I don't know for sure how to get it - perhaps ioctl on the  
> device? BLKGETSIZE?

	fd = open(bdev, O_RDONLY);
	lseek(fd, SEEK_END, 0);
	size = lseek(fd, SEEK_SET, 0);
	close(fd);

i.e. same as for regular files.  Won't be portable, though...
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