Description of problem: All my services in F26 with PrivateDevices=true fail because the SELinux transition from init_t to the daemon domain is blocked, rendering the PrivateDevices directive unusable. The services worked in F25, so something has changed between versions. Version-Release number of selected component (if applicable): selinux-policy-3.13.1-259.fc26.noarch systemd-233-6.fc26.x86_64 kernel-4.11.8-300.fc26.x86_64 How reproducible: Always Steps to Reproduce: 1. Run a SELinux confined daemon with PrivateDevices=true Actual results: Daemon runs with init_t Expected results: Daemon process transitions to its own domain Additional info: This is an example AVC of amavisd.service in F26: SELinux is preventing amavisd from ioctl access on the file /usr/sbin/amavisd. ***** Plugin catchall (100. confidence) suggests ************************** If cree que de manera predeterminada, amavisd debería permitir acceso ioctl sobre amavisd file. Then debería reportar esto como un error. Puede generar un módulo de política local para permitir este acceso. Do allow this access for now by executing: # ausearch -c 'amavisd' --raw | audit2allow -M my-amavisd # semodule -X 300 -i my-amavisd.pp Additional Information: Source Context system_u:system_r:init_t:s0 Target Context system_u:object_r:antivirus_exec_t:s0 Target Objects /usr/sbin/amavisd [ file ] Source amavisd Source Path amavisd Port <Unknown> Host argon Source RPM Packages Target RPM Packages amavisd-new-2.11.0-6.fc26.noarch Policy RPM selinux-policy-3.13.1-259.fc26.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name argon Platform Linux argon 4.11.8-300.fc26.x86_64 #1 SMP Thu Jun 29 20:09:48 UTC 2017 x86_64 x86_64 Alert Count 93 First Seen 2017-07-08 12:09:18 CEST Last Seen 2017-07-08 23:06:09 CEST Local ID c08e43e9-df1b-4f1b-9ede-5557463000a1 Raw Audit Messages type=AVC msg=audit(1499547969.808:321): avc: denied { ioctl } for pid=3018 comm="amavisd" path="/usr/sbin/amavisd" dev="dm-0" ino=16844128 ioctlcmd=0x5401 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:antivirus_exec_t:s0 tclass=file permissive=0 Hash: amavisd,init_t,antivirus_exec_t,file,ioctl
See also this thread: https://lists.fedoraproject.org/archives/list/selinux@lists.fedoraproject.org/thread/MYQQAM5OBUCTQOGVRBQRVA2A2X5N2LSZ/
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