From owner-svn-src-all@FreeBSD.ORG Sun May 8 09:08:50 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BB8DA1065670; Sun, 8 May 2011 09:08:50 +0000 (UTC) (envelope-from pjd@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id 939BD8FC14; Sun, 8 May 2011 09:08:50 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id p4898owY037595; Sun, 8 May 2011 09:08:50 GMT (envelope-from pjd@svn.freebsd.org) Received: (from pjd@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id p4898o4S037593; Sun, 8 May 2011 09:08:50 GMT (envelope-from pjd@svn.freebsd.org) Message-Id: <201105080908.p4898o4S037593@svn.freebsd.org> From: Pawel Jakub Dawidek Date: Sun, 8 May 2011 09:08:50 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r221624 - head/sys/geom/eli X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 May 2011 09:08:50 -0000 Author: pjd Date: Sun May 8 09:08:50 2011 New Revision: 221624 URL: http://svn.freebsd.org/changeset/base/221624 Log: Add magic field to the g_eli_key structure to detect if we are really operating on proper structures. MFC after: 1 week Modified: head/sys/geom/eli/g_eli_key_cache.c Modified: head/sys/geom/eli/g_eli_key_cache.c ============================================================================== --- head/sys/geom/eli/g_eli_key_cache.c Sun May 8 08:22:11 2011 (r221623) +++ head/sys/geom/eli/g_eli_key_cache.c Sun May 8 09:08:50 2011 (r221624) @@ -57,9 +57,13 @@ static uint64_t g_eli_key_cache_misses; SYSCTL_UQUAD(_kern_geom_eli, OID_AUTO, key_cache_misses, CTLFLAG_RW, &g_eli_key_cache_misses, 0, "Key cache misses"); +#define G_ELI_KEY_MAGIC 0xe11341c + struct g_eli_key { /* Key value, must be first in the structure. */ uint8_t gek_key[G_ELI_DATAKEYLEN]; + /* Magic. */ + int gek_magic; /* Key number. */ uint64_t gek_keyno; /* Reference counter. */ @@ -98,6 +102,7 @@ g_eli_key_fill(struct g_eli_softc *sc, s sizeof(hmacdata), key->gek_key, 0); key->gek_keyno = keyno; key->gek_count = 0; + key->gek_magic = G_ELI_KEY_MAGIC; } static struct g_eli_key * @@ -150,6 +155,7 @@ g_eli_key_replace(struct g_eli_softc *sc { mtx_assert(&sc->sc_ekeys_lock, MA_OWNED); + KASSERT(key->gek_magic == G_ELI_KEY_MAGIC, ("Invalid magic.")); RB_REMOVE(g_eli_key_tree, &sc->sc_ekeys_tree, key); TAILQ_REMOVE(&sc->sc_ekeys_queue, key, gek_next); @@ -167,7 +173,7 @@ g_eli_key_remove(struct g_eli_softc *sc, { mtx_assert(&sc->sc_ekeys_lock, MA_OWNED); - + KASSERT(key->gek_magic == G_ELI_KEY_MAGIC, ("Invalid magic.")); KASSERT(key->gek_count == 0, ("gek_count=%d", key->gek_count)); RB_REMOVE(g_eli_key_tree, &sc->sc_ekeys_tree, key); @@ -276,6 +282,8 @@ g_eli_key_hold(struct g_eli_softc *sc, o /* We have all the keys, so avoid some overhead. */ key = RB_FIND(g_eli_key_tree, &sc->sc_ekeys_tree, &keysearch); KASSERT(key != NULL, ("No key %ju found.", (uintmax_t)keyno)); + KASSERT(key->gek_magic == G_ELI_KEY_MAGIC, + ("Invalid key magic.")); return (key->gek_key); } @@ -306,6 +314,8 @@ g_eli_key_hold(struct g_eli_softc *sc, o key->gek_count++; mtx_unlock(&sc->sc_ekeys_lock); + KASSERT(key->gek_magic == G_ELI_KEY_MAGIC, ("Invalid key magic.")); + return (key->gek_key); } @@ -317,6 +327,8 @@ g_eli_key_drop(struct g_eli_softc *sc, u if ((sc->sc_flags & G_ELI_FLAG_SINGLE_KEY) != 0) return; + KASSERT(key->gek_magic == G_ELI_KEY_MAGIC, ("Invalid key magic.")); + if (sc->sc_ekeys_total == sc->sc_ekeys_allocated) return;