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Bug 1052817 - SELinux prevents glusterfsd from accessing a local directory
Summary: SELinux prevents glusterfsd from accessing a local directory
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: selinux-policy
Version: 7.0
Hardware: Unspecified
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Miroslav Grepl
QA Contact: Michal Trunecka
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-01-14 06:07 UTC by Shanzhi Yu
Modified: 2014-09-30 23:35 UTC (History)
7 users (show)

Fixed In Version: selinux-policy-3.12.1-117.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-06-13 10:31:27 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Shanzhi Yu 2014-01-14 06:07:21 UTC 
Description of problem:

Selinux prevent glusterfs  access local directory

Version-Release number of selected component (if applicable):

selinux-policy-3.12.1-115.el7.noarch

libvirt-1.1.1-18.el7.x86_64
qemu-kvm-rhev-1.5.3-34.el7.x86_64


How reproducible:
100%

Steps to Reproduce:
1.prepare glusterfs server and volume
#gluster volume  info gluster-vol1 
 
Volume Name: gluster-vol1
Type: Distribute
Volume ID: 32fe2d1d-7a2a-45d9-8a96-faab68253edd
Status: Started
Number of Bricks: 2
Transport-type: tcp
Bricks:
Brick1: 10.66.106.20:/mnt/gluster-volume1
Brick2: 10.66.106.22:/mnt/gluster-volume1
Options Reconfigured:
server.allow-insecure: on

2.create an netfs type pool
#mkdir /var/lib/libvirt/images/netfs
#ll -Z /var/lib/libvirt/images|grep netfs

drwxr-xr-x. root root system_u:object_r:nfs_t:s0       netfs

# virsh pool-create-as gluster --type netfs --source-host 10.66.106.20 --source-path gluster-vol1 --source-format glusterfs --target /var/lib/libvirt/images/netfs/ 

error: Failed to create pool gluster
error: internal error: Child process (/usr/bin/mount -t glusterfs 10.66.106.20:gluster-vol1 -o direct-io-mode=1 /var/lib/libvirt/images/netfs) unexpected exit status 1: 2014-01-13 03:33:09.963+0000: 6226: debug : virFileClose:90 : Closed fd 26
2014-01-13 03:33:09.963+0000: 6226: debug : virFileClose:90 : Closed fd 28
2014-01-13 03:33:09.963+0000: 6226: debug : virFileClose:90 : Closed fd 22
/usr/bin/fusermount-glusterfs: mount failed: Permission denied

3.#grep glusterfs /var/log/audit/audit.log

type=AVC msg=audit(1389679054.415:6890): avc:  denied  { mounton } for  pid=32442 comm="glusterfs" path="/var/lib/libvirt/images/netfs" dev="0:35" ino=9508905 scontext=system_u:system_r:glusterd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:nfs_t:s0 tclass=dir
type=SYSCALL msg=audit(1389679054.415:6890): arch=c000003e syscall=165 success=no exit=-13 a0=7fb021cdbb50 a1=7fb021cdb680 a2=7fb01e869028 a3=0 items=0 ppid=32441 pid=32442 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="glusterfs" exe="/usr/sbin/glusterfsd" subj=system_u:system_r:glusterd_t:s0-s0:c0.c1023 key=(null)
type=SYSCALL msg=audit(1389679054.417:6891): arch=c000003e syscall=165 success=no exit=-13 a0=7f9a762e6240 a1=7f9a762e5070 a2=7f9a762e62a0 a3=6 items=0 ppid=32442 pid=32447 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="fusermount-glus" exe="/usr/bin/fusermount-glusterfs" subj=system_u:system_r:glusterd_t:s0-s0:c0.c1023 key=(null)



Actual results:


Expected results:

should succeed creating pool in step 2

Additional info:

workaround:
# grep glusterfs /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp
or
disable selinux

I can run "mount -t glusterfs 10.66.106.20:gluster-vol1 -o direct-io-mode=1 /var/lib/libvirt/images/netfs" with root,there is no permission error.
Comment 2 Shanzhi Yu 2014-01-14 06:44:00 UTC 
sorry,please refer to this audit log

# grep gluster /var/log/audit/audit.log
type=AVC msg=audit(1389681621.988:7057): avc:  denied  { mounton } for  pid=2399 comm="glusterfs" path="/var/lib/libvirt/images/netfs" dev="sda1" ino=203763571 scontext=system_u:system_r:glusterd_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_image_t:s0 tclass=dir
type=SYSCALL msg=audit(1389681621.988:7057): arch=c000003e syscall=165 success=no exit=-13 a0=7f264d4e2b50 a1=7f264d4e2680 a2=7f2649e94028 a3=0 items=0 ppid=2398 pid=2399 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="glusterfs" exe="/usr/sbin/glusterfsd" subj=system_u:system_r:glusterd_t:s0-s0:c0.c1023 key=(null)
type=AVC msg=audit(1389681621.990:7058): avc:  denied  { mounton } for  pid=2404 comm="fusermount-glus" path="/var/lib/libvirt/images/netfs" dev="sda1" ino=203763571 scontext=system_u:system_r:glusterd_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:virt_image_t:s0 tclass=dir
type=SYSCALL msg=audit(1389681621.990:7058): arch=c000003e syscall=165 success=no exit=-13 a0=7fb4210e9240 a1=7fb4210e8070 a2=7fb4210e92a0 a3=6 items=0 ppid=2399 pid=2404 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="fusermount-glus" exe="/usr/bin/fusermount-glusterfs" subj=system_u:system_r:glusterd_t:s0-s0:c0.c1023 key=(null)
Comment 3 Miroslav Grepl 2014-01-14 08:17:44 UTC 
(In reply to Shanzhi Yu from comment #2)
> sorry,please refer to this audit log
> 
> # grep gluster /var/log/audit/audit.log
> type=AVC msg=audit(1389681621.988:7057): avc:  denied  { mounton } for 
> pid=2399 comm="glusterfs" path="/var/lib/libvirt/images/netfs" dev="sda1"
> ino=203763571 scontext=system_u:system_r:glusterd_t:s0-s0:c0.c1023
> tcontext=unconfined_u:object_r:virt_image_t:s0 tclass=dir
> type=SYSCALL msg=audit(1389681621.988:7057): arch=c000003e syscall=165
> success=no exit=-13 a0=7f264d4e2b50 a1=7f264d4e2680 a2=7f2649e94028 a3=0
> items=0 ppid=2398 pid=2399 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0
> egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="glusterfs"
> exe="/usr/sbin/glusterfsd" subj=system_u:system_r:glusterd_t:s0-s0:c0.c1023
> key=(null)
> type=AVC msg=audit(1389681621.990:7058): avc:  denied  { mounton } for 
> pid=2404 comm="fusermount-glus" path="/var/lib/libvirt/images/netfs"
> dev="sda1" ino=203763571
> scontext=system_u:system_r:glusterd_t:s0-s0:c0.c1023
> tcontext=unconfined_u:object_r:virt_image_t:s0 tclass=dir
> type=SYSCALL msg=audit(1389681621.990:7058): arch=c000003e syscall=165
> success=no exit=-13 a0=7fb4210e9240 a1=7fb4210e8070 a2=7fb4210e92a0 a3=6
> items=0 ppid=2399 pid=2404 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0
> egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="fusermount-glus"
> exe="/usr/bin/fusermount-glusterfs"
> subj=system_u:system_r:glusterd_t:s0-s0:c0.c1023 key=(null)

So these AVC come from

virsh pool-create-as gluster --type netfs --source-host 10.66.106.20 --source-path gluster-vol1 --source-format glusterfs --target /var/lib/libvirt/images/netfs/
Comment 4 Michal Trunecka 2014-01-20 14:35:56 UTC 
Shanzhi, could you please confirm it works fine with the current policy? (3.12.1-117.el7 or newer)
Comment 5 Shanzhi Yu 2014-01-21 02:05:10 UTC 
(In reply to Michal Trunecka from comment #4)
> Shanzhi, could you please confirm it works fine with the current policy?
> (3.12.1-117.el7 or newer)

Michal,

I'd like to tell you it works fine with 3.12.1-117,so I will change it to VERIFIED status.
Comment 7 Ludek Smid 2014-06-13 10:31:27 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

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