Re: Identifying sparse files using getattrlist()
Re: Identifying sparse files using getattrlist()
- Subject: Re: Identifying sparse files using getattrlist()
- From: Mike Mackovitch <email@hidden>
- Date: Tue, 3 Nov 2009 08:12:14 -0800
On Tue, Nov 03, 2009 at 09:27:38PM +0530, rohan a wrote:
> Why the hard coded value 512 ?
>
> To find the real size of the file I tried this :
> RealSize = st_blocks * st_blksize;
>
> st_blksize returned was 4096
>
> And the real size far execeeded the stat size (should be the opposite
> for sparse files)
Perhaps reading the documentation would help? From the stat(2) man page:
The size-related fields of the structures are as follows:
st_blksize The optimal I/O block size for the file.
st_blocks The actual number of blocks allocated for the file in
512-byte units. [...]
HTH
--macko
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