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Date: Mon, 08 Sep 2008 16:19:41 -0700
From: Leslie Cheung <lccheung@usc.edu>
Subject: Re: Stat(1) for filesize
In-reply-to: <200809080153.m881rH8X021678@bourbon.usc.edu>
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Hi class,

fseek and stat are different, in that fseek reads the file while stat does
not (stat reads only the file's metadata).  If you do not have read
permission, fseek would fail, but stat may give you the filesize if you have
permission to read the file's metadata.

I have just looked at the grading guidelines, and you can't get the
filesize using fseek in at least one test case.

Regards,
Leslie

On Sun, Sep 7, 2008 at 6:53 PM, Bill Cheng <william@bourbon.usc.edu> wrote:

> Someone wrote:
>
>  > You have emphasized to use stat(1) for filesize. But I have used other
>  > method such as 'Fseek' to know the filesize. Is that ok? Or should I
>  > change it?
>
> Anything equivalent would be fine.  Please make sure that the
> value it gives is correct and that it also works for directories.
> --
> Bill Cheng // bill.cheng@usc.edu <URL:http://merlot.usc.edu/william/usc/>
>
>

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<div dir="ltr"><div>Hi class,</div>
<div>&nbsp;</div>
<div>fseek and stat are different, in that fseek reads the file while stat does not (stat reads only the file&#39;s metadata).&nbsp; If you do not have read permission, fseek would fail, but stat may give you the filesize if you have permission to read the file&#39;s metadata. </div>

<div>&nbsp;</div>
<div>I have just looked at the grading guidelines, and you can&#39;t get the filesize&nbsp;using fseek in&nbsp;at least one test case.</div>
<div>&nbsp;</div>
<div>Regards,</div>
<div>Leslie<br><br></div>
<div class="gmail_quote">On Sun, Sep 7, 2008 at 6:53 PM, Bill Cheng <span dir="ltr">&lt;<a href="mailto:william@bourbon.usc.edu">william@bourbon.usc.edu</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Someone wrote:<br><br>&nbsp;&gt; You have emphasized to use stat(1) for filesize. But I have used other<br>&nbsp;&gt; method such as &#39;Fseek&#39; to know the filesize. Is that ok? Or should I<br>
&nbsp;&gt; change it?<br><br>Anything equivalent would be fine. &nbsp;Please make sure that the<br>value it gives is correct and that it also works for directories.<br><font color="#888888">--<br>Bill Cheng // <a href="mailto:bill.cheng@usc.edu">bill.cheng@usc.edu</a> &lt;URL:<a href="http://merlot.usc.edu/william/usc/" target="_blank">http://merlot.usc.edu/william/usc/</a>&gt;<br>
<br></font></blockquote></div><br></div>

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