From ab861dfca1652aa09b26b7aa2899feb29b33dfd9 Mon Sep 17 00:00:00 2001 From: Daniel Jurgens Date: Fri, 19 May 2017 15:48:58 +0300 Subject: selinux: Add IB Port SMP access vector Add a type for Infiniband ports and an access vector for subnet management packets. Implement the ib_port_smp hook to check that the caller has permission to send and receive SMPs on the end port specified by the device name and port. Add interface to query the SID for a IB port, which walks the IB_PORT ocontexts to find an entry for the given name and port. Signed-off-by: Daniel Jurgens Reviewed-by: James Morris Acked-by: Doug Ledford Signed-off-by: Paul Moore --- security/selinux/ss/services.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'security/selinux/ss/services.c') diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index 02257d90adc9..202166612b80 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -2272,6 +2272,47 @@ out: return rc; } +/** + * security_ib_endport_sid - Obtain the SID for a subnet management interface. + * @dev_name: device name + * @port: port number + * @out_sid: security identifier + */ +int security_ib_endport_sid(const char *dev_name, u8 port_num, u32 *out_sid) +{ + struct ocontext *c; + int rc = 0; + + read_lock(&policy_rwlock); + + c = policydb.ocontexts[OCON_IBENDPORT]; + while (c) { + if (c->u.ibendport.port == port_num && + !strncmp(c->u.ibendport.dev_name, + dev_name, + IB_DEVICE_NAME_MAX)) + break; + + c = c->next; + } + + if (c) { + if (!c->sid[0]) { + rc = sidtab_context_to_sid(&sidtab, + &c->context[0], + &c->sid[0]); + if (rc) + goto out; + } + *out_sid = c->sid[0]; + } else + *out_sid = SECINITSID_UNLABELED; + +out: + read_unlock(&policy_rwlock); + return rc; +} + /** * security_netif_sid - Obtain the SID for a network interface. * @name: interface name -- cgit v1.2.3-59-g8ed1b