1 files changed, 43 insertions, 21 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 28832e689800..24caaeec8894 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -18,7 +18,6 @@
  *      as published by the Free Software Foundation.
  */
 
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -69,6 +68,7 @@
 #include <linux/sysctl.h>
 #include <linux/audit.h>
 #include <linux/string.h>
+#include <linux/selinux.h>
 
 #include "avc.h"
 #include "objsec.h"
@@ -2643,6 +2643,11 @@ static int selinux_task_getsid(struct task_struct *p)
         return task_has_perm(current, p, PROCESS__GETSESSION);
 }
 
+static void selinux_task_getsecid(struct task_struct *p, u32 *secid)
+{
+        selinux_get_task_sid(p, secid);
+}
+
 static int selinux_task_setgroups(struct group_info *group_info)
 {
         /* See the comment for setuid above. */
@@ -2665,6 +2670,11 @@ static int selinux_task_setioprio(struct task_struct *p, int ioprio)
         return task_has_perm(current, p, PROCESS__SETSCHED);
 }
 
+static int selinux_task_getioprio(struct task_struct *p)
+{
+        return task_has_perm(current, p, PROCESS__GETSCHED);
+}
+
 static int selinux_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
 {
         struct rlimit *old_rlim = current->signal->rlim + resource;
@@ -2699,12 +2709,14 @@ static int selinux_task_movememory(struct task_struct *p)
         return task_has_perm(current, p, PROCESS__SETSCHED);
 }
 
-static int selinux_task_kill(struct task_struct *p, struct siginfo *info, int sig)
+static int selinux_task_kill(struct task_struct *p, struct siginfo *info,
+                                int sig, u32 secid)
 {
         u32 perm;
         int rc;
+        struct task_security_struct *tsec;
 
-        rc = secondary_ops->task_kill(p, info, sig);
+        rc = secondary_ops->task_kill(p, info, sig, secid);
         if (rc)
                 return rc;
 
@@ -2715,8 +2727,12 @@ static int selinux_task_kill(struct task_struct *p, struct siginfo *info, int si
                 perm = PROCESS__SIGNULL; /* null signal; existence test */
         else
                 perm = signal_to_av(sig);
-
-        return task_has_perm(current, p, perm);
+        tsec = p->security;
+        if (secid)
+                rc = avc_has_perm(secid, tsec->sid, SECCLASS_PROCESS, perm, NULL);
+        else
+                rc = task_has_perm(current, p, perm);
+        return rc;
 }
 
 static int selinux_task_prctl(int option,
@@ -3420,7 +3436,13 @@ out:
 static int selinux_socket_getpeersec_dgram(struct sk_buff *skb, char **secdata, u32 *seclen)
 {
         int err = 0;
-        u32 peer_sid = selinux_socket_getpeer_dgram(skb);
+        u32 peer_sid;
+
+        if (skb->sk->sk_family == PF_UNIX)
+                selinux_get_inode_sid(SOCK_INODE(skb->sk->sk_socket),
+                                      &peer_sid);
+        else
+                peer_sid = selinux_socket_getpeer_dgram(skb);
 
         if (peer_sid == SECSID_NULL)
                 return -EINVAL;
@@ -3432,8 +3454,6 @@ static int selinux_socket_getpeersec_dgram(struct sk_buff *skb, char **secdata,
         return 0;
 }
 
-
-
 static int selinux_sk_alloc_security(struct sock *sk, int family, gfp_t priority)
 {
         return sk_alloc_security(sk, family, priority);
@@ -3641,32 +3661,32 @@ static unsigned int selinux_ipv6_postroute_last(unsigned int hooknum,
 
 static int selinux_netlink_send(struct sock *sk, struct sk_buff *skb)
 {
-        struct task_security_struct *tsec;
-        struct av_decision avd;
         int err;
 
         err = secondary_ops->netlink_send(sk, skb);
         if (err)
                 return err;
 
-        tsec = current->security;
-
-        avd.allowed = 0;
-        avc_has_perm_noaudit(tsec->sid, tsec->sid,
-                                SECCLASS_CAPABILITY, ~0, &avd);
-        cap_mask(NETLINK_CB(skb).eff_cap, avd.allowed);
-
         if (policydb_loaded_version >= POLICYDB_VERSION_NLCLASS)
                 err = selinux_nlmsg_perm(sk, skb);
 
         return err;
 }
 
-static int selinux_netlink_recv(struct sk_buff *skb)
+static int selinux_netlink_recv(struct sk_buff *skb, int capability)
 {
-        if (!cap_raised(NETLINK_CB(skb).eff_cap, CAP_NET_ADMIN))
-                return -EPERM;
-        return 0;
+        int err;
+        struct avc_audit_data ad;
+
+        err = secondary_ops->netlink_recv(skb, capability);
+        if (err)
+                return err;
+
+        AVC_AUDIT_DATA_INIT(&ad, CAP);
+        ad.u.cap = capability;
+
+        return avc_has_perm(NETLINK_CB(skb).sid, NETLINK_CB(skb).sid,
+                            SECCLASS_CAPABILITY, CAP_TO_MASK(capability), &ad);
 }
 
 static int ipc_alloc_security(struct task_struct *task,
@@ -4429,9 +4449,11 @@ static struct security_operations selinux_ops = {
         .task_setpgid =                 selinux_task_setpgid,
         .task_getpgid =                 selinux_task_getpgid,
         .task_getsid =                  selinux_task_getsid,
+        .task_getsecid =                selinux_task_getsecid,
         .task_setgroups =               selinux_task_setgroups,
         .task_setnice =                 selinux_task_setnice,
         .task_setioprio =               selinux_task_setioprio,
+        .task_getioprio =               selinux_task_getioprio,
         .task_setrlimit =               selinux_task_setrlimit,
         .task_setscheduler =            selinux_task_setscheduler,
         .task_getscheduler =            selinux_task_getscheduler,