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Operating Systems Linux permissions issue
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Old 07-19-2007
permissions issue

We are trying to run a program on a Red Hat ES3 machine that works fine under root user but not as any other user. I believe its getting denied access to the USB ports (which this program needs), Does anyone know how i can open up access to the USB ports on a machine to all users.

Thanks,
Frank

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CAPTEST:(8)						  System Administration Utilities					       CAPTEST:(8)

NAME
captest - a program to demonstrate capabilities SYNOPSIS
captest [ --drop-all | --drop-caps | --id ] [ --lock ] [ --text ] DESCRIPTION
captest is a program that demonstrates and prints out the current process capabilities. Each option prints the same report. It will output current capabilities. then it will try to access /etc/shadow directly to show if that can be done. Then it creates a child process that attempts to read /etc/shadow and outputs the results of that. Then it outputs the capabilities that a child process would have. You can also apply file system capabilities to this program to study how they work. For example, filecap /usr/bin/captest chown. Then run captest as a normal user. Another interesting test is to make captest suid root so that you can see what the interaction is between root's credentials and capabilities. For example, chmod 4755 /usr/bin/captest. When run as a normal user, the program will see if privilege esca- lation is possible. But do not leave this app setuid root after you are don testing so that an attacker cannot take advantage of it. OPTIONS
--drop-all This drops all capabilities and clears the bounding set. --drop-caps This drops just traditional capabilities. --id This changes to uid and gid 99, drops supplemental groups, and clears the bounding set. --text This option outputs the effective capabilities in text rather than numerically. --lock This prevents the ability for child processes to regain privileges if the uid is 0. SEE ALSO
filecap(8), capabilities(7) AUTHOR
Steve Grubb Red Hat June 2009 CAPTEST:(8)

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