GNU bug report logs - #15325
How does gzip reads/writes data from/to the file.

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: ddun <ddun.user <at> gmail.com>
To: bug-gzip <at> gnu.org
Subject: How does gzip reads/writes data from/to the file.
Date: Tue, 10 Sep 2013 13:54:39 -0400

[Message part 1 (text/plain, inline)]

Hello,

I am trying to figure out what functions does gzip uses to read/write the
data to/from the files. I saw that for error cases gzip was using *fprintf
(stderr.. *but saw no fread/fscanf functions anywhere in the code.
*
*
Can anyone point out the functions used by gzip to read/write to a file and
in which code file are they.
*
*
Thanks* *

[Message part 2 (text/html, inline)]

Message #12 received at 15325-done <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: ddun <ddun.user <at> gmail.com>
Cc: 15325-done <at> debbugs.gnu.org
Subject: Re: bug#15325: How does gzip reads/writes data from/to the file.
Date: Tue, 10 Sep 2013 12:15:07 -0600

[Message part 1 (text/plain, inline)]

tag 15325 notabug
thanks

On 09/10/2013 11:54 AM, ddun wrote:
> Hello,
> 
> I am trying to figure out what functions does gzip uses to read/write the
> data to/from the files. I saw that for error cases gzip was using *fprintf
> (stderr.. *but saw no fread/fscanf functions anywhere in the code.
> *
> *
> Can anyone point out the functions used by gzip to read/write to a file and
> in which code file are they.

Look for the lower-level read()/write() interface (Unix unbuffered file
I/O), not the higher-level fread() (C buffered file I/O).

I'm closing this as not a bug, so that it doesn't clog the bug tracker;
but feel free to continue to respond as you have other questions.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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