Re: Compatible fstat()

[linux-os (Dick Johnson)]

On Tue, 8 Nov 2005, Al Viro wrote:

> 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...
>
I think lseek has more of a chance than ioctl(), though.
Thanks.

Cheers,
Dick Johnson
Penguin : Linux version 2.6.13.4 on an i686 machine (5589.55 BogoMips).
Warning : 98.36% of all statistics are fiction.
.

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