| Summary: | No DAC seclabel info is output in active dumpxml when security_default_confined = 0 | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Fangge Jin <fjin> |
| Component: | libvirt | Assignee: | Ján Tomko <jtomko> |
| Status: | CLOSED WONTFIX | QA Contact: | yafu <yafu> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.3 | CC: | dyuan, mzhan, rbalakri, xuzhang, yafu, yanqzhan, zpeng |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-06-02 10:44:54 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
The "dac" security driver is quirky. I don't think this particular corner case is worth fixing. |
Description of problem: Set security_default_confined = 0 in qemu.conf, start guest, guest image ownership changed to qemu:qemu from root:root, but seclabel info is not output in active xml. Version-Release number of selected component: libvirt-2.0.0-5.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. Prepare guest image file: # ll -Z /var/lib/libvirt/images/rhel7.2.qcow2 -rw-------. root root system_u:object_r:virt_image_t:s0 /var/lib/libvirt/images/rhel7.2.qcow2 2. Set security_default_confined = 0 in qemu.conf, restart libvirtd service 3. Check active domain xml: # virsh dumpxml rhel7 ... <seclabel type='none' model='selinux'/> ... No DAC seclabel info is output in dumpxml, but actually guest image file ownership is changed to qemu:qemu from root:root # ll -Z /var/lib/libvirt/images/rhel7.2.qcow2 -rw-------. qemu qemu system_u:object_r:virt_image_t:s0 /var/lib/libvirt/images/rhel7.2.qcow2 Actual results: As step3 Expected results: In step 3, DAC seclabel info is output in active xml, or guest should fail to start Additional info: 1. Keep default setting in qemu.conf 2. Prepare guest without seclabel element in domain xml 3. Start guest, check active dumpxml: # virsh dumpxml rhel7 ... <seclabel type='dynamic' model='selinux' relabel='yes'> <label>system_u:system_r:svirt_t:s0:c124,c389</label> <imagelabel>system_u:object_r:svirt_image_t:s0:c124,c389</imagelabel> </seclabel> <seclabel type='dynamic' model='dac' relabel='yes'> <label>+107:+107</label> <imagelabel>+107:+107</imagelabel> </seclabel> ...