Re: Can I use printf in dl-load.c?

["Yihan Dang" <qcloud1223@qq.com>]

Hi Florian, 
Thank you very much for your reply!


I've checked ldsodefs.h and found _dl_printf there. I guess using functions in stdio.h may cause some problems so there is a seperate printf here.


Also, I did not find any function related to scanf in ldsodefs.h, does that mean there is no way to achieve the similar functionality?


Thank you in advance,
Yihan

---Original---
From: "Florian Weimer"<fweimer@redhat.com&gt;
Date: Thu, Jan 14, 2021 16:19 PM
To: "Yihan Dang via Libc-help"<libc-help@sourceware.org&gt;;
Cc: "Yihan Dang"<qcloud1223@qq.com&gt;;
Subject: Re: Can I use printf in dl-load.c?


* Yihan Dang via Libc-help:

&gt; I'm trying to use printf to get maplength in
&gt; dl-load.c:_dl_map_object_from_fd, and this is how the code looks like:

You need to use _dl_printf.&nbsp; Please note that it does not support all
formatting directives.

Thanks,
Florian
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