On 02/15/2016 10:03 AM, Miroslav Grepl wrote:
On 02/14/2016 01:43 AM, Robert Nichols wrote:
In CentOS 6.7 with Windows 7 running in a QEMU/KVM virtual machine, when I power-on a printer that the Windows VM uses via networking I get the below AVC alert. Anyone have any idea what is going on? I haven't noticed anything not working.
Is it a USB printer?
The host is using a USB connection with CUPS. The printer also has a network interface, and I let Windows machines (both real and VM) use it directly via the network rather than setting up Samba print sharing.
SELinux is preventing /lib/udev/udev-configure-printer from read access on the chr_file 003.
***** Plugin catchall (100. confidence) suggests
If you believe that udev-configure-printer should be allowed read access on the 003 chr_file by default. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # grep udev-configure- /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp
Additional Information: Source Context system_u:system_r:cupsd_config_t:s0-s0:c0.c1023 Target Context system_u:object_r:svirt_image_t:s0:c255,c554 Target Objects 003 [ chr_file ] Source udev-configure- Source Path /lib/udev/udev-configure-printer Port <Unknown> Host omega-3g.local Source RPM Packages system-config-printer-udev-1.1.16-25.el6.x86_64 Target RPM Packages Policy RPM selinux-policy-3.7.19-279.el6_7.8.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name omega-3g.local Platform Linux omega-3g.local 3.18.21-16.el6.x86_64 #1 SMP Sat Sep 26 01:24:19 UTC 2015 x86_64 x86_64 Alert Count 1 First Seen Sat 13 Feb 2016 06:18:29 PM CST Last Seen Sat 13 Feb 2016 06:18:29 PM CST Local ID c3c9d30e-0835-4402-b342-acddd26e1686
Raw Audit Messages type=AVC msg=audit(1455409109.607:29449): avc: denied { read } for pid=32326 comm="udev-configure-" name="003" dev="devtmpfs" ino=2706 scontext=system_u:system_r:cupsd_config_t:s0-s0:c0.c1023 tcontext=system_u:object_r:svirt_image_t:s0:c255,c554 tclass=chr_file permissive=0
type=SYSCALL msg=audit(1455409109.607:29449): arch=x86_64 syscall=open success=no exit=EACCES a0=7ffe1bd16eb0 a1=0 a2=d a3=0 items=0 ppid=1 pid=32326 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=udev-configure- exe=/lib/udev/udev-configure-printer subj=system_u:system_r:cupsd_config_t:s0-s0:c0.c1023 key=(null)
Hash: udev-configure-,cupsd_config_t,svirt_image_t,chr_file,read