AUDIT: Avoid sleeping function in SElinux AVC audit.

This patch changes the SELinux AVC to defer logging of paths to the audit
framework upon syscall exit, by saving a reference to the (dentry,vfsmount)
pair in an auxiliary audit item on the current audit context for processing
by audit_log_exit.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 8 insertions, 9 deletions

diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index 62b963aca27..0fbc3e98c5e 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -573,13 +573,10 @@ void avc_audit(u32 ssid, u32 tsid,
                 case AVC_AUDIT_DATA_FS:
                         if (a->u.fs.dentry) {
                                 struct dentry *dentry = a->u.fs.dentry;
-                                if (a->u.fs.mnt) {
-                                        audit_log_d_path(ab, "path=", dentry,
-                                                        a->u.fs.mnt);
-                                } else {
-                                        audit_log_format(ab, " name=%s",
-                                                         dentry->d_name.name);
-                                }
+                                if (a->u.fs.mnt)
+                                        audit_avc_path(dentry, a->u.fs.mnt);
+                                audit_log_format(ab, " name=%s",
+                                                 dentry->d_name.name);
                                 inode = dentry->d_inode;
                         } else if (a->u.fs.inode) {
                                 struct dentry *dentry;
@@ -630,8 +627,10 @@ void avc_audit(u32 ssid, u32 tsid,
                                 case AF_UNIX:
                                         u = unix_sk(sk);
                                         if (u->dentry) {
-                                                audit_log_d_path(ab, "path=",
-                                                        u->dentry, u->mnt);
+                                                audit_avc_path(u->dentry, u->mnt);
+                                                audit_log_format(ab, " name=%s",
+                                                                 u->dentry->d_name.name);
+
                                                 break;
                                         }
                                         if (!u->addr)