6 files changed, 22 insertions, 51 deletions

diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index 7f9b5fac8779..b2ab60859832 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -927,7 +927,7 @@ int avc_has_perm_noaudit(u32 ssid, u32 tsid,
         if (denied) {
                 if (flags & AVC_STRICT)
                         rc = -EACCES;
-                else if (!selinux_enforcing || security_permissive_sid(ssid))
+                else if (!selinux_enforcing || (avd->flags & AVD_FLAGS_PERMISSIVE))
                         avc_update_node(AVC_CALLBACK_GRANT, requested, ssid,
                                         tsid, tclass, avd->seqno);
                 else
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 2fcad7c33eaf..195906bce266 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1980,10 +1980,6 @@ static int selinux_sysctl(ctl_table *table, int op)
         u32 tsid, sid;
         int rc;
 
-        rc = secondary_ops->sysctl(table, op);
-        if (rc)
-                return rc;
-
         sid = current_sid();
 
         rc = selinux_sysctl_get_sid(table, (op == 0001) ?
@@ -2375,10 +2371,8 @@ static void selinux_bprm_committed_creds(struct linux_binprm *bprm)
 {
         const struct task_security_struct *tsec = current_security();
         struct itimerval itimer;
-        struct sighand_struct *psig;
         u32 osid, sid;
         int rc, i;
-        unsigned long flags;
 
         osid = tsec->osid;
         sid = tsec->sid;
@@ -2398,22 +2392,20 @@ static void selinux_bprm_committed_creds(struct linux_binprm *bprm)
                 memset(&itimer, 0, sizeof itimer);
                 for (i = 0; i < 3; i++)
                         do_setitimer(i, &itimer, NULL);
-                flush_signals(current);
                 spin_lock_irq(&current->sighand->siglock);
-                flush_signal_handlers(current, 1);
-                sigemptyset(&current->blocked);
-                recalc_sigpending();
+                if (!(current->signal->flags & SIGNAL_GROUP_EXIT)) {
+                        __flush_signals(current);
+                        flush_signal_handlers(current, 1);
+                        sigemptyset(&current->blocked);
+                }
                 spin_unlock_irq(&current->sighand->siglock);
         }
 
         /* Wake up the parent if it is waiting so that it can recheck
          * wait permission to the new task SID. */
-        read_lock_irq(&tasklist_lock);
-        psig = current->parent->sighand;
-        spin_lock_irqsave(&psig->siglock, flags);
-        wake_up_interruptible(&current->parent->signal->wait_chldexit);
-        spin_unlock_irqrestore(&psig->siglock, flags);
-        read_unlock_irq(&tasklist_lock);
+        read_lock(&tasklist_lock);
+        wake_up_interruptible(&current->real_parent->signal->wait_chldexit);
+        read_unlock(&tasklist_lock);
 }
 
 /* superblock security operations */
diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index 5c3434f7626f..ca835795a8b3 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -8,14 +8,13 @@
 #ifndef _SELINUX_SECURITY_H_
 #define _SELINUX_SECURITY_H_
 
+#include <linux/magic.h>
 #include "flask.h"
 
 #define SECSID_NULL                     0x00000000 /* unspecified SID */
 #define SECSID_WILD                     0xffffffff /* wildcard SID */
 #define SECCLASS_NULL                   0x0000 /* no class */
 
-#define SELINUX_MAGIC 0xf97cff8c
-
 /* Identify specific policy version changes */
 #define POLICYDB_VERSION_BASE           15
 #define POLICYDB_VERSION_BOOL           16
@@ -91,9 +90,11 @@ struct av_decision {
         u32 auditallow;
         u32 auditdeny;
         u32 seqno;
+        u32 flags;
 };
 
-int security_permissive_sid(u32 sid);
+/* definitions of av_decision.flags */
+#define AVD_FLAGS_PERMISSIVE    0x0001
 
 int security_compute_av(u32 ssid, u32 tsid,
         u16 tclass, u32 requested,
diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c
index c6875fd3b9d6..dd7cc6de77f9 100644
--- a/security/selinux/nlmsgtab.c
+++ b/security/selinux/nlmsgtab.c
@@ -112,6 +112,8 @@ static struct nlmsg_perm nlmsg_audit_perms[] =
         { AUDIT_DEL_RULE,       NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
         { AUDIT_USER,           NETLINK_AUDIT_SOCKET__NLMSG_RELAY    },
         { AUDIT_SIGNAL_INFO,    NETLINK_AUDIT_SOCKET__NLMSG_READ     },
+        { AUDIT_TRIM,           NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
+        { AUDIT_MAKE_EQUIV,     NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
         { AUDIT_TTY_GET,        NETLINK_AUDIT_SOCKET__NLMSG_READ     },
         { AUDIT_TTY_SET,        NETLINK_AUDIT_SOCKET__NLMSG_TTY_AUDIT   },
 };
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 2d5136ec3d54..b4fc506e7a87 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -527,10 +527,10 @@ static ssize_t sel_write_access(struct file *file, char *buf, size_t size)
                 goto out2;
 
         length = scnprintf(buf, SIMPLE_TRANSACTION_LIMIT,
-                          "%x %x %x %x %u",
+                          "%x %x %x %x %u %x",
                           avd.allowed, 0xffffffff,
                           avd.auditallow, avd.auditdeny,
-                          avd.seqno);
+                          avd.seqno, avd.flags);
 out2:
         kfree(tcon);
 out:
@@ -803,10 +803,6 @@ static ssize_t sel_read_bool(struct file *filep, char __user *buf,
                 goto out;
         }
 
-        if (count > PAGE_SIZE) {
-                ret = -EINVAL;
-                goto out;
-        }
         page = (char *)get_zeroed_page(GFP_KERNEL);
         if (!page) {
                 ret = -ENOMEM;
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index deeec6c013ae..500e6f78e115 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -410,6 +410,7 @@ static int context_struct_compute_av(struct context *scontext,
         avd->auditallow = 0;
         avd->auditdeny = 0xffffffff;
         avd->seqno = latest_granting;
+        avd->flags = 0;
 
         /*
          * Check for all the invalid cases.
@@ -528,31 +529,6 @@ inval_class:
         return 0;
 }
 
-/*
- * Given a sid find if the type has the permissive flag set
- */
-int security_permissive_sid(u32 sid)
-{
-        struct context *context;
-        u32 type;
-        int rc;
-
-        read_lock(&policy_rwlock);
-
-        context = sidtab_search(&sidtab, sid);
-        BUG_ON(!context);
-
-        type = context->type;
-        /*
-         * we are intentionally using type here, not type-1, the 0th bit may
-         * someday indicate that we are globally setting permissive in policy.
-         */
-        rc = ebitmap_get_bit(&policydb.permissive_map, type);
-
-        read_unlock(&policy_rwlock);
-        return rc;
-}
-
 static int security_validtrans_handle_fail(struct context *ocontext,
                                            struct context *ncontext,
                                            struct context *tcontext,
@@ -767,6 +743,10 @@ int security_compute_av(u32 ssid,
 
         rc = context_struct_compute_av(scontext, tcontext, tclass,
                                        requested, avd);
+
+        /* permissive domain? */
+        if (ebitmap_get_bit(&policydb.permissive_map, scontext->type))
+            avd->flags |= AVD_FLAGS_PERMISSIVE;
 out:
         read_unlock(&policy_rwlock);
         return rc;