1/*-
2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
3 * Copyright (c) 2001 Ilmar S. Habibulin
4 * Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
5 * All rights reserved.
6 *
7 * This software was developed by Robert Watson and Ilmar Habibulin for the
8 * TrustedBSD Project.

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31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * $FreeBSD: head/sys/security/mac/mac_process.c 104527 2002-10-05 17:38:45Z rwatson $
40 */
41/*
42 * Developed by the TrustedBSD Project.
43 *
44 * Framework for extensible kernel access control. Kernel and userland
45 * interface to the framework, policy registration and composition.
46 */
47

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1038static void
1039mac_init_structmac(struct mac *mac)
1040{
1041
1042 bzero(mac, sizeof(*mac));
1043 mac->m_macflags = MAC_FLAG_INITIALIZED;
1044}
1045
1046void
1047mac_init_bpfdesc(struct bpf_d *bpf_d)
1048{
1049
1050 mac_init_label(&bpf_d->bd_label);
1051 MAC_PERFORM(init_bpfdesc_label, &bpf_d->bd_label);
1052#ifdef MAC_DEBUG
1053 atomic_add_int(&nmacbpfdescs, 1);
1054#endif
1055}
1056
1057void
1058mac_init_cred(struct ucred *cr)
1059{
1060
1061 mac_init_label(&cr->cr_label);
1062 MAC_PERFORM(init_cred_label, &cr->cr_label);
1063#ifdef MAC_DEBUG
1064 atomic_add_int(&nmaccreds, 1);
1065#endif
1066}
1067
1068void
1069mac_init_devfsdirent(struct devfs_dirent *de)
1070{
1071
1072 mac_init_label(&de->de_label);
1073 MAC_PERFORM(init_devfsdirent_label, &de->de_label);
1074#ifdef MAC_DEBUG
1075 atomic_add_int(&nmacdevfsdirents, 1);
1076#endif
1077}
1078
1079void
1080mac_init_ifnet(struct ifnet *ifp)
1081{
1082
1083 mac_init_label(&ifp->if_label);
1084 MAC_PERFORM(init_ifnet_label, &ifp->if_label);
1085#ifdef MAC_DEBUG
1086 atomic_add_int(&nmacifnets, 1);
1087#endif
1088}
1089
1090void
1091mac_init_ipq(struct ipq *ipq)
1092{
1093
1094 mac_init_label(&ipq->ipq_label);
1095 MAC_PERFORM(init_ipq_label, &ipq->ipq_label);
1096#ifdef MAC_DEBUG
1097 atomic_add_int(&nmacipqs, 1);
1098#endif
1099}
1100
1101int
1102mac_init_mbuf(struct mbuf *m, int flag)
1103{
1104 KASSERT(m->m_flags & M_PKTHDR, ("mac_init_mbuf on non-header mbuf"));
1105
1106 mac_init_label(&m->m_pkthdr.label);
1107
1108 MAC_PERFORM(init_mbuf_label, &m->m_pkthdr.label, flag);
1109#ifdef MAC_DEBUG
1110 atomic_add_int(&nmacmbufs, 1);
1111#endif
1112 return (0);
1113}
1114
1115void
1116mac_init_mount(struct mount *mp)
1117{
1118
1119 mac_init_label(&mp->mnt_mntlabel);
1120 mac_init_label(&mp->mnt_fslabel);
1121 MAC_PERFORM(init_mount_label, &mp->mnt_mntlabel);
1122 MAC_PERFORM(init_mount_fs_label, &mp->mnt_fslabel);
1123#ifdef MAC_DEBUG
1124 atomic_add_int(&nmacmounts, 1);
1125#endif
1126}
1127
1128void
1129mac_init_pipe(struct pipe *pipe)
1130{
1131 struct label *label;
1132
1133 label = malloc(sizeof(struct label), M_MACPIPELABEL, M_ZERO|M_WAITOK);
1134 mac_init_label(label);
1135 pipe->pipe_label = label;
1136 pipe->pipe_peer->pipe_label = label;
1137 MAC_PERFORM(init_pipe_label, pipe->pipe_label);
1138#ifdef MAC_DEBUG
1139 atomic_add_int(&nmacpipes, 1);
1140#endif
1141}
1142
1143void
1144mac_init_socket(struct socket *socket)
1145{
1146
1147 mac_init_label(&socket->so_label);
1148 mac_init_label(&socket->so_peerlabel);
1149 MAC_PERFORM(init_socket_label, &socket->so_label);
1150 MAC_PERFORM(init_socket_peer_label, &socket->so_peerlabel);
1151#ifdef MAC_DEBUG
1152 atomic_add_int(&nmacsockets, 1);
1153#endif
1154}
1155
1156static void
1157mac_init_temp(struct label *label)
1158{
1159
1160 mac_init_label(label);
1161 MAC_PERFORM(init_temp_label, label);
1162#ifdef MAC_DEBUG
1163 atomic_add_int(&nmactemp, 1);
1164#endif
1165}
1166
1167void
1168mac_init_vnode(struct vnode *vp)
1169{
1170
1171 mac_init_label(&vp->v_label);
1172 MAC_PERFORM(init_vnode_label, &vp->v_label);
1173#ifdef MAC_DEBUG
1174 atomic_add_int(&nmacvnodes, 1);
1175#endif
1176}
1177
1178void
1179mac_destroy_bpfdesc(struct bpf_d *bpf_d)
1180{
1181
1182 MAC_PERFORM(destroy_bpfdesc_label, &bpf_d->bd_label);
1183 mac_destroy_label(&bpf_d->bd_label);
1184#ifdef MAC_DEBUG
1185 atomic_subtract_int(&nmacbpfdescs, 1);
1186#endif
1187}
1188
1189void
1190mac_destroy_cred(struct ucred *cr)
1191{
1192
1193 MAC_PERFORM(destroy_cred_label, &cr->cr_label);
1194 mac_destroy_label(&cr->cr_label);
1195#ifdef MAC_DEBUG
1196 atomic_subtract_int(&nmaccreds, 1);
1197#endif
1198}
1199
1200void
1201mac_destroy_devfsdirent(struct devfs_dirent *de)
1202{
1203
1204 MAC_PERFORM(destroy_devfsdirent_label, &de->de_label);
1205 mac_destroy_label(&de->de_label);
1206#ifdef MAC_DEBUG
1207 atomic_subtract_int(&nmacdevfsdirents, 1);
1208#endif
1209}
1210
1211void
1212mac_destroy_ifnet(struct ifnet *ifp)
1213{
1214
1215 MAC_PERFORM(destroy_ifnet_label, &ifp->if_label);
1216 mac_destroy_label(&ifp->if_label);
1217#ifdef MAC_DEBUG
1218 atomic_subtract_int(&nmacifnets, 1);
1219#endif
1220}
1221
1222void
1223mac_destroy_ipq(struct ipq *ipq)
1224{
1225
1226 MAC_PERFORM(destroy_ipq_label, &ipq->ipq_label);
1227 mac_destroy_label(&ipq->ipq_label);
1228#ifdef MAC_DEBUG
1229 atomic_subtract_int(&nmacipqs, 1);
1230#endif
1231}
1232
1233void
1234mac_destroy_mbuf(struct mbuf *m)
1235{
1236
1237 MAC_PERFORM(destroy_mbuf_label, &m->m_pkthdr.label);
1238 mac_destroy_label(&m->m_pkthdr.label);
1239#ifdef MAC_DEBUG
1240 atomic_subtract_int(&nmacmbufs, 1);
1241#endif
1242}
1243
1244void
1245mac_destroy_mount(struct mount *mp)
1246{
1247
1248 MAC_PERFORM(destroy_mount_label, &mp->mnt_mntlabel);
1249 MAC_PERFORM(destroy_mount_fs_label, &mp->mnt_fslabel);
1250 mac_destroy_label(&mp->mnt_fslabel);
1251 mac_destroy_label(&mp->mnt_mntlabel);
1252#ifdef MAC_DEBUG
1253 atomic_subtract_int(&nmacmounts, 1);
1254#endif
1255}
1256
1257void
1258mac_destroy_pipe(struct pipe *pipe)
1259{
1260
1261 MAC_PERFORM(destroy_pipe_label, pipe->pipe_label);
1262 mac_destroy_label(pipe->pipe_label);
1263 free(pipe->pipe_label, M_MACPIPELABEL);
1264#ifdef MAC_DEBUG
1265 atomic_subtract_int(&nmacpipes, 1);
1266#endif
1267}
1268
1269void
1270mac_destroy_socket(struct socket *socket)
1271{
1272
1273 MAC_PERFORM(destroy_socket_label, &socket->so_label);
1274 MAC_PERFORM(destroy_socket_peer_label, &socket->so_peerlabel);
1275 mac_destroy_label(&socket->so_label);
1276 mac_destroy_label(&socket->so_peerlabel);
1277#ifdef MAC_DEBUG
1278 atomic_subtract_int(&nmacsockets, 1);
1279#endif
1280}
1281
1282static void
1283mac_destroy_temp(struct label *label)
1284{
1285
1286 MAC_PERFORM(destroy_temp_label, label);
1287 mac_destroy_label(label);
1288#ifdef MAC_DEBUG
1289 atomic_subtract_int(&nmactemp, 1);
1290#endif
1291}
1292
1293void
1294mac_destroy_vnode(struct vnode *vp)
1295{
1296
1297 MAC_PERFORM(destroy_vnode_label, &vp->v_label);
1298 mac_destroy_label(&vp->v_label);
1299#ifdef MAC_DEBUG
1300 atomic_subtract_int(&nmacvnodes, 1);
1301#endif
1302}
1303
1304static int
1305mac_externalize(struct label *label, struct mac *mac)
1306{
1307 int error;
1308

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