Re: Identifying sparse files using getattrlist()
Re: Identifying sparse files using getattrlist()
- Subject: Re: Identifying sparse files using getattrlist()
- From: rohan a <email@hidden>
- Date: Tue, 3 Nov 2009 21:55:05 +0530
Thanks a lot :) I will try this
Would st_blksize vary for every file ?
Also is there any macro I can use instead of directly using 512 ?
On Tue, Nov 3, 2009 at 9:42 PM, Mike Mackovitch <email@hidden> wrote:
> 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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