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Description of problem: Version-Release number of selected component (if applicable): selinux-policy-3.3.1-95.fc9.noarch How reproducible: Steps to Reproduce: 1. try to export a filesystem on a mls enforcing server Actual results: startup: Oct 16 14:00:54 keymaster exportfs[1983]: failed to lock /var/lib/nfs/xtab Oct 16 14:00:54 keymaster exportfs[1983]: failed to lock /var/lib/nfs/etab Oct 16 14:00:54 keymaster exportfs[1983]: can't open /var/lib/nfs/etab.tmp for writing Oct 16 14:00:54 keymaster exportfs[1983]: failed to lock /var/lib/nfs/xtab Oct 16 14:00:54 keymaster exportfs[1983]: can't open /var/lib/nfs/xtab.tmp for writing trying to stop: # run_init service nfs stop Authenticating root. Password: Shutting down NFS mountd: [FAILED] Shutting down NFS daemon: [FAILED] Shutting down NFS quotas: [FAILED] exportfs: failed to lock /var/lib/nfs/etab Shutting down NFS services: [FAILED] Shutting down RPC svcgssd: [FAILED] Expected results: no errors Additional info: This is the policy I currently have for my mls enforcing nfsserver: module mynfsserver 1.0.13; require { type var_lib_nfs_t; type kernel_t; type nfsd_t; type rpcd_t; type gssd_t; type initrc_t; type mnt_t; class tcp_socket { read write }; class file { unlink rename create lock read write }; class dir { read write add_name remove_name getattr search }; class process ptrace; } #============= initrc_t ============== allow initrc_t var_lib_nfs_t:file { unlink rename lock read write create }; allow initrc_t var_lib_nfs_t:dir { write add_name remove_name }; # idmap is rpcd_t allow initrc_t rpcd_t:process ptrace; # rpcbind it initrc_t allow initrc_t initrc_t:process ptrace; allow initrc_t kernel_t:process ptrace; allow initrc_t gssd_t:process ptrace; allow initrc_t nfsd_t:process ptrace; #============= kernel_t ============== allow kernel_t var_lib_nfs_t:dir read; allow kernel_t nfsd_t:tcp_socket { read write }; #============= nfsd_t ============== allow nfsd_t mnt_t:dir { getattr search };
forgot to include avc... below, newaudit is a script i wrote to show new avcs since the last run of the script.. [root@keymaster ~]# run_init service nfs stop ... [ all success] [root@keymaster ~]# newaudit none [root@keymaster ~]# semodule -r sefosnfsserver [root@keymaster ~]# newaudit *** /tmp/newaudit 2008-10-16 18:38:56.000000000 -0400 --- /tmp/newaudit.new 2008-10-16 18:42:53.000000000 -0400 *************** *** 3156 **** --- 3157 ---- + type=USER_AVC msg=audit(1224196770.264:281): user pid=1758 uid=81 auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t:s0-s15:c0.c1023 msg='avc: received policyload notice (seqno=2) : exe="?" (sauid=81, hostname=?, addr=?, terminal=?)' [root@keymaster ~]# run_init service nfs start Authenticating root. Password: Starting RPC svcgssd: [ OK ] Starting NFS services: exportfs: failed to lock /var/lib/nfs/etab exportfs: can't open /var/lib/nfs/etab.tmp for writing [ OK ] Starting NFS quotas: rpc.rquotad: Cannot bind to given address: Permission denied [ OK ] Starting NFS daemon: [ OK ] Starting NFS mountd: [ OK ] Starting RPC idmapd: [ OK ] [root@keymaster ~]# newaudit *** /tmp/newaudit 2008-10-16 18:42:53.000000000 -0400 --- /tmp/newaudit.new 2008-10-16 18:43:10.000000000 -0400 *************** *** 3157 **** --- 3158,3161 ---- + type=AVC msg=audit(1224196987.162:285): avc: denied { lock } for pid=2226 comm="exportfs" path="/var/lib/nfs/etab" dev=dm-0 ino=97874 scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:object_r:var_lib_nfs_t:s0 tclass=file + type=AVC msg=audit(1224196987.165:286): avc: denied { write } for pid=2226 comm="exportfs" name="nfs" dev=dm-0 ino=97672 scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:object_r:var_lib_nfs_t:s0 tclass=dir + type=AVC msg=audit(1224196987.191:287): avc: denied { name_bind } for pid=2228 comm="rpc.rquotad" src=875 scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:object_r:hi_reserved_port_t:s0 tclass=tcp_socket + type=AVC msg=audit(1224196987.193:288): avc: denied { name_bind } for pid=2228 comm="rpc.rquotad" src=713 scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:object_r:hi_reserved_port_t:s0 tclass=tcp_socket [root@keymaster ~]# run_init service nfs stop Authenticating root. Password: Shutting down NFS mountd: [FAILED] Shutting down NFS daemon: [FAILED] Shutting down NFS quotas: [FAILED] exportfs: failed to lock /var/lib/nfs/etab Shutting down NFS services: [FAILED] Shutting down RPC svcgssd: [FAILED] [root@keymaster ~]# newaudit *** /tmp/newaudit 2008-10-16 18:43:10.000000000 -0400 --- /tmp/newaudit.new 2008-10-16 18:43:25.000000000 -0400 *************** *** 3161 **** --- 3162 ---- + type=AVC msg=audit(1224197003.561:291): avc: denied { lock } for pid=2295 comm="exportfs" path="/var/lib/nfs/etab" dev=dm-0 ino=97874 scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:object_r:var_lib_nfs_t:s0 tclass=file The stops above work once the ptrace permissions are added.. apparently ptrace is don't audited...
A sampling of the 2 pages of avcs I get trying to stop nfs after running 'semodule -DB' + type=AVC msg=audit(1224197435.639:649): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:nfsd_t:s0-s15:c0.c1023 tclass=process + type=AVC msg=audit(1224197435.640:650): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:rpcd_t:s0-s15:c0.c1023 tclass=process + type=AVC msg=audit(1224197435.640:651): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tclass=process + type=AVC msg=audit(1224197435.641:652): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tclass=process + type=AVC msg=audit(1224197435.641:653): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tclass=process + type=AVC msg=audit(1224197435.642:654): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tclass=process + type=AVC msg=audit(1224197435.642:655): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:kernel_t:s15:c0.c1023 tclass=process + type=AVC msg=audit(1224197435.643:656): avc: denied { ptrace } for pid=2351 comm="pidof" scontext=system_u:system_r:initrc_t:s0-s15:c0.c1023 tcontext=system_u:system_r:kernel_t:s15:c0.c1023 tclass=process
Fixed in selinux-policy-3.3.1-103.fc9.noarch
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