<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal>We use Etherlab 2.0 for the automation of a hydraulic test rig. We would like to give users without admin rights the permission to execute control programs which have been built with the Simulink coder and the etherlab toolbox. <span style='color:#1F497D'>We set the udev rules from the etherlab documentation to allow user permission for the Ethercat device.</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>KERNEL ==" EtherCAT [0 -9]*" , MODE ="0664" , GROUP =" users "<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>When calling the executable we get the error message:<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='color:#1F497D'>mlockall() failed: Cannot allocate memory<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><span style='color:#1F497D'>Setting SCHED_FIFO with priority 99 failed: Operation not permitted<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>We can change the capability of the executable with setcap (sudo setcap cap_ipc_lock=ep ./Test2ndOrderSystem). But this doesn’t help because we need administrator rights to change that too. <o:p></o:p></span></p><p class=MsoNormal>Thank you, Matthias Liermann<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in'><p class=MsoNormal style='border:none;padding:0in'><span lang=EN-US style='mso-fareast-language:EN-GB'><o:p> </o:p></span></p></div><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:EN-GB'>Assistant Professor<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:EN-GB'><a href="http://aub.edu.lb/">American University of Beirut</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:EN-GB'><a href="http://www.aub.edu.lb/fea/me/Pages/default.aspx">Department of Mechanical Engineering</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='mso-fareast-language:EN-GB'><a href="http://staff.aub.edu.lb/~ml14/Homepage/">Personal Homepage</a><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>