From: Jan Kara <jack@suse.cz>
To: Ivan Shmakov <oneingray@gmail.com>
Cc: linux-ext4@vger.kernel.org
Subject: Re: a (documented) way to get the Ext2+ filesystem size?
Date: Tue, 16 Aug 2011 16:21:08 +0200 [thread overview]
Message-ID: <20110816142108.GF23416@quack.suse.cz> (raw)
In-Reply-To: <86aab94mfg.fsf@gray.siamics.net>
On Tue 16-08-11 18:37:23, Ivan Shmakov wrote:
> How do I get the Ext2+ filesystem size (in blocks)?
>
> Currently, I do it like:
>
> static uint_fast64_t
> e2fs_size (ext2_filsys e2)
> {
> uint_fast32_t hi
> = (uint_fast32_t)e2->super->s_blocks_count_hi;
> uint_fast32_t lo
> = (uint_fast32_t)e2->super->s_blocks_count;
>
> /* . */
> return (((uint64_t)hi << 32) | lo);
> }
>
> However, it seems that there's no documentation for both the
> ext2_filsys and struct ext2_super_block structure types, and
> their respective member fields.
>
> Am I safe with the code above?
Yes, this is correct.
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
next prev parent reply other threads:[~2011-08-16 14:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-16 11:37 a (documented) way to get the Ext2+ filesystem size? Ivan Shmakov
2011-08-16 14:21 ` Jan Kara [this message]
2011-08-17 18:31 ` Ted Ts'o
2011-08-17 18:50 ` Ivan Shmakov
2011-08-17 22:09 ` Ted Ts'o
2011-08-18 2:34 ` Steven Liu
2011-08-18 4:25 ` e2dis example usage pattern Ivan Shmakov
2011-08-18 3:49 ` a (documented) way to get the Ext2+ filesystem size? Ivan Shmakov
2011-08-18 21:03 ` Ted Ts'o
2011-08-19 4:34 ` Ivan Shmakov
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