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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I have finally figured out that I can indeed talk to the driver just fine. The problem is that my code checks for errno even when ioctls don’t return -1.
For some reason, after resume, errno is set to EINTR. Is it possible that criu causes this by sending a signal to the my app during suspend?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Shouldn’t errno be cleared by criu on resume?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Krystof<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> criu-bounces@openvz.org [mailto:criu-bounces@openvz.org]
<b>On Behalf Of </b>Zmudzinski, Krystof C<br>
<b>Sent:</b> Tuesday, September 30, 2014 1:11 PM<br>
<b>To:</b> beproject criu<br>
<b>Cc:</b> CRIU<br>
<b>Subject:</b> Re: [CRIU] CRIU saving/restoring fd for the device file<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yes, the fd is restored but ioctls fail. My driver is a misc character driver although I could probably change it to something else. I haven’t figured out
a way to reconnect the fd back to the driver.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Krystof<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> beproject criu [<a href="mailto:beprojectcriu@gmail.com">mailto:beprojectcriu@gmail.com</a>]
<br>
<b>Sent:</b> Monday, September 29, 2014 12:21 PM<br>
<b>To:</b> Zmudzinski, Krystof C<br>
<b>Subject:</b> CRIU saving/restoring fd for the device file<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Sir,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">I am working on criu, i am not able to dump process tree because of fd of a device file.You have mentioned in your query of CRIU mailing list that you were able to succesfully save/restore fd of a device file.<o:p></o:p></p>
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<p class="MsoNormal">Can you tell me that how did you save fd of a file?<o:p></o:p></p>
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<p class="MsoNormal"><br>
It will be a major step for me if i am able to store fd of a device file.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">Nilesh<o:p></o:p></p>
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