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authorPaul Moore <paul.moore@hp.com>2008-01-29 08:37:59 -0500
committerJames Morris <jmorris@namei.org>2008-01-29 16:17:19 -0500
commit16efd45435fa695b501b7f73c3259bd7c77cc12c (patch)
treef26eb84f65192eb0a17aca399fd405100e4be974 /net
parent1c3fad936acaf87b75055b95be781437e97d787f (diff)
NetLabel: Add secid token support to the NetLabel secattr struct
This patch adds support to the NetLabel LSM secattr struct for a secid token and a type field, paving the way for full LSM/SELinux context support and "static" or "fallback" labels. In addition, this patch adds a fair amount of documentation to the core NetLabel structures used as part of the NetLabel kernel API. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/cipso_ipv4.c59
-rw-r--r--net/netlabel/netlabel_unlabeled.c1
2 files changed, 38 insertions, 22 deletions
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index d4dc4eb48d95..a2241060113b 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -348,6 +348,7 @@ static int cipso_v4_cache_check(const unsigned char *key,
348 atomic_inc(&entry->lsm_data->refcount); 348 atomic_inc(&entry->lsm_data->refcount);
349 secattr->cache = entry->lsm_data; 349 secattr->cache = entry->lsm_data;
350 secattr->flags |= NETLBL_SECATTR_CACHE; 350 secattr->flags |= NETLBL_SECATTR_CACHE;
351 secattr->type = NETLBL_NLTYPE_CIPSOV4;
351 if (prev_entry == NULL) { 352 if (prev_entry == NULL) {
352 spin_unlock_bh(&cipso_v4_cache[bkt].lock); 353 spin_unlock_bh(&cipso_v4_cache[bkt].lock);
353 return 0; 354 return 0;
@@ -865,7 +866,7 @@ static int cipso_v4_map_cat_rbm_hton(const struct cipso_v4_doi *doi_def,
865 } 866 }
866 867
867 for (;;) { 868 for (;;) {
868 host_spot = netlbl_secattr_catmap_walk(secattr->mls_cat, 869 host_spot = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
869 host_spot + 1); 870 host_spot + 1);
870 if (host_spot < 0) 871 if (host_spot < 0)
871 break; 872 break;
@@ -948,7 +949,7 @@ static int cipso_v4_map_cat_rbm_ntoh(const struct cipso_v4_doi *doi_def,
948 return -EPERM; 949 return -EPERM;
949 break; 950 break;
950 } 951 }
951 ret_val = netlbl_secattr_catmap_setbit(secattr->mls_cat, 952 ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
952 host_spot, 953 host_spot,
953 GFP_ATOMIC); 954 GFP_ATOMIC);
954 if (ret_val != 0) 955 if (ret_val != 0)
@@ -1014,7 +1015,8 @@ static int cipso_v4_map_cat_enum_hton(const struct cipso_v4_doi *doi_def,
1014 u32 cat_iter = 0; 1015 u32 cat_iter = 0;
1015 1016
1016 for (;;) { 1017 for (;;) {
1017 cat = netlbl_secattr_catmap_walk(secattr->mls_cat, cat + 1); 1018 cat = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
1019 cat + 1);
1018 if (cat < 0) 1020 if (cat < 0)
1019 break; 1021 break;
1020 if ((cat_iter + 2) > net_cat_len) 1022 if ((cat_iter + 2) > net_cat_len)
@@ -1049,7 +1051,7 @@ static int cipso_v4_map_cat_enum_ntoh(const struct cipso_v4_doi *doi_def,
1049 u32 iter; 1051 u32 iter;
1050 1052
1051 for (iter = 0; iter < net_cat_len; iter += 2) { 1053 for (iter = 0; iter < net_cat_len; iter += 2) {
1052 ret_val = netlbl_secattr_catmap_setbit(secattr->mls_cat, 1054 ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
1053 ntohs(get_unaligned((__be16 *)&net_cat[iter])), 1055 ntohs(get_unaligned((__be16 *)&net_cat[iter])),
1054 GFP_ATOMIC); 1056 GFP_ATOMIC);
1055 if (ret_val != 0) 1057 if (ret_val != 0)
@@ -1130,7 +1132,8 @@ static int cipso_v4_map_cat_rng_hton(const struct cipso_v4_doi *doi_def,
1130 return -ENOSPC; 1132 return -ENOSPC;
1131 1133
1132 for (;;) { 1134 for (;;) {
1133 iter = netlbl_secattr_catmap_walk(secattr->mls_cat, iter + 1); 1135 iter = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
1136 iter + 1);
1134 if (iter < 0) 1137 if (iter < 0)
1135 break; 1138 break;
1136 cat_size += (iter == 0 ? 0 : sizeof(u16)); 1139 cat_size += (iter == 0 ? 0 : sizeof(u16));
@@ -1138,7 +1141,8 @@ static int cipso_v4_map_cat_rng_hton(const struct cipso_v4_doi *doi_def,
1138 return -ENOSPC; 1141 return -ENOSPC;
1139 array[array_cnt++] = iter; 1142 array[array_cnt++] = iter;
1140 1143
1141 iter = netlbl_secattr_catmap_walk_rng(secattr->mls_cat, iter); 1144 iter = netlbl_secattr_catmap_walk_rng(secattr->attr.mls.cat,
1145 iter);
1142 if (iter < 0) 1146 if (iter < 0)
1143 return -EFAULT; 1147 return -EFAULT;
1144 cat_size += sizeof(u16); 1148 cat_size += sizeof(u16);
@@ -1191,7 +1195,7 @@ static int cipso_v4_map_cat_rng_ntoh(const struct cipso_v4_doi *doi_def,
1191 else 1195 else
1192 cat_low = 0; 1196 cat_low = 0;
1193 1197
1194 ret_val = netlbl_secattr_catmap_setrng(secattr->mls_cat, 1198 ret_val = netlbl_secattr_catmap_setrng(secattr->attr.mls.cat,
1195 cat_low, 1199 cat_low,
1196 cat_high, 1200 cat_high,
1197 GFP_ATOMIC); 1201 GFP_ATOMIC);
@@ -1251,7 +1255,9 @@ static int cipso_v4_gentag_rbm(const struct cipso_v4_doi *doi_def,
1251 if ((secattr->flags & NETLBL_SECATTR_MLS_LVL) == 0) 1255 if ((secattr->flags & NETLBL_SECATTR_MLS_LVL) == 0)
1252 return -EPERM; 1256 return -EPERM;
1253 1257
1254 ret_val = cipso_v4_map_lvl_hton(doi_def, secattr->mls_lvl, &level); 1258 ret_val = cipso_v4_map_lvl_hton(doi_def,
1259 secattr->attr.mls.lvl,
1260 &level);
1255 if (ret_val != 0) 1261 if (ret_val != 0)
1256 return ret_val; 1262 return ret_val;
1257 1263
@@ -1303,12 +1309,13 @@ static int cipso_v4_parsetag_rbm(const struct cipso_v4_doi *doi_def,
1303 ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level); 1309 ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
1304 if (ret_val != 0) 1310 if (ret_val != 0)
1305 return ret_val; 1311 return ret_val;
1306 secattr->mls_lvl = level; 1312 secattr->attr.mls.lvl = level;
1307 secattr->flags |= NETLBL_SECATTR_MLS_LVL; 1313 secattr->flags |= NETLBL_SECATTR_MLS_LVL;
1308 1314
1309 if (tag_len > 4) { 1315 if (tag_len > 4) {
1310 secattr->mls_cat = netlbl_secattr_catmap_alloc(GFP_ATOMIC); 1316 secattr->attr.mls.cat =
1311 if (secattr->mls_cat == NULL) 1317 netlbl_secattr_catmap_alloc(GFP_ATOMIC);
1318 if (secattr->attr.mls.cat == NULL)
1312 return -ENOMEM; 1319 return -ENOMEM;
1313 1320
1314 ret_val = cipso_v4_map_cat_rbm_ntoh(doi_def, 1321 ret_val = cipso_v4_map_cat_rbm_ntoh(doi_def,
@@ -1316,7 +1323,7 @@ static int cipso_v4_parsetag_rbm(const struct cipso_v4_doi *doi_def,
1316 tag_len - 4, 1323 tag_len - 4,
1317 secattr); 1324 secattr);
1318 if (ret_val != 0) { 1325 if (ret_val != 0) {
1319 netlbl_secattr_catmap_free(secattr->mls_cat); 1326 netlbl_secattr_catmap_free(secattr->attr.mls.cat);
1320 return ret_val; 1327 return ret_val;
1321 } 1328 }
1322 1329
@@ -1350,7 +1357,9 @@ static int cipso_v4_gentag_enum(const struct cipso_v4_doi *doi_def,
1350 if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL)) 1357 if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
1351 return -EPERM; 1358 return -EPERM;
1352 1359
1353 ret_val = cipso_v4_map_lvl_hton(doi_def, secattr->mls_lvl, &level); 1360 ret_val = cipso_v4_map_lvl_hton(doi_def,
1361 secattr->attr.mls.lvl,
1362 &level);
1354 if (ret_val != 0) 1363 if (ret_val != 0)
1355 return ret_val; 1364 return ret_val;
1356 1365
@@ -1396,12 +1405,13 @@ static int cipso_v4_parsetag_enum(const struct cipso_v4_doi *doi_def,
1396 ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level); 1405 ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
1397 if (ret_val != 0) 1406 if (ret_val != 0)
1398 return ret_val; 1407 return ret_val;
1399 secattr->mls_lvl = level; 1408 secattr->attr.mls.lvl = level;
1400 secattr->flags |= NETLBL_SECATTR_MLS_LVL; 1409 secattr->flags |= NETLBL_SECATTR_MLS_LVL;
1401 1410
1402 if (tag_len > 4) { 1411 if (tag_len > 4) {
1403 secattr->mls_cat = netlbl_secattr_catmap_alloc(GFP_ATOMIC); 1412 secattr->attr.mls.cat =
1404 if (secattr->mls_cat == NULL) 1413 netlbl_secattr_catmap_alloc(GFP_ATOMIC);
1414 if (secattr->attr.mls.cat == NULL)
1405 return -ENOMEM; 1415 return -ENOMEM;
1406 1416
1407 ret_val = cipso_v4_map_cat_enum_ntoh(doi_def, 1417 ret_val = cipso_v4_map_cat_enum_ntoh(doi_def,
@@ -1409,7 +1419,7 @@ static int cipso_v4_parsetag_enum(const struct cipso_v4_doi *doi_def,
1409 tag_len - 4, 1419 tag_len - 4,
1410 secattr); 1420 secattr);
1411 if (ret_val != 0) { 1421 if (ret_val != 0) {
1412 netlbl_secattr_catmap_free(secattr->mls_cat); 1422 netlbl_secattr_catmap_free(secattr->attr.mls.cat);
1413 return ret_val; 1423 return ret_val;
1414 } 1424 }
1415 1425
@@ -1443,7 +1453,9 @@ static int cipso_v4_gentag_rng(const struct cipso_v4_doi *doi_def,
1443 if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL)) 1453 if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
1444 return -EPERM; 1454 return -EPERM;
1445 1455
1446 ret_val = cipso_v4_map_lvl_hton(doi_def, secattr->mls_lvl, &level); 1456 ret_val = cipso_v4_map_lvl_hton(doi_def,
1457 secattr->attr.mls.lvl,
1458 &level);
1447 if (ret_val != 0) 1459 if (ret_val != 0)
1448 return ret_val; 1460 return ret_val;
1449 1461
@@ -1488,12 +1500,13 @@ static int cipso_v4_parsetag_rng(const struct cipso_v4_doi *doi_def,
1488 ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level); 1500 ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
1489 if (ret_val != 0) 1501 if (ret_val != 0)
1490 return ret_val; 1502 return ret_val;
1491 secattr->mls_lvl = level; 1503 secattr->attr.mls.lvl = level;
1492 secattr->flags |= NETLBL_SECATTR_MLS_LVL; 1504 secattr->flags |= NETLBL_SECATTR_MLS_LVL;
1493 1505
1494 if (tag_len > 4) { 1506 if (tag_len > 4) {
1495 secattr->mls_cat = netlbl_secattr_catmap_alloc(GFP_ATOMIC); 1507 secattr->attr.mls.cat =
1496 if (secattr->mls_cat == NULL) 1508 netlbl_secattr_catmap_alloc(GFP_ATOMIC);
1509 if (secattr->attr.mls.cat == NULL)
1497 return -ENOMEM; 1510 return -ENOMEM;
1498 1511
1499 ret_val = cipso_v4_map_cat_rng_ntoh(doi_def, 1512 ret_val = cipso_v4_map_cat_rng_ntoh(doi_def,
@@ -1501,7 +1514,7 @@ static int cipso_v4_parsetag_rng(const struct cipso_v4_doi *doi_def,
1501 tag_len - 4, 1514 tag_len - 4,
1502 secattr); 1515 secattr);
1503 if (ret_val != 0) { 1516 if (ret_val != 0) {
1504 netlbl_secattr_catmap_free(secattr->mls_cat); 1517 netlbl_secattr_catmap_free(secattr->attr.mls.cat);
1505 return ret_val; 1518 return ret_val;
1506 } 1519 }
1507 1520
@@ -1850,6 +1863,8 @@ static int cipso_v4_getattr(const unsigned char *cipso,
1850 ret_val = cipso_v4_parsetag_rng(doi_def, &cipso[6], secattr); 1863 ret_val = cipso_v4_parsetag_rng(doi_def, &cipso[6], secattr);
1851 break; 1864 break;
1852 } 1865 }
1866 if (ret_val == 0)
1867 secattr->type = NETLBL_NLTYPE_CIPSOV4;
1853 1868
1854getattr_return: 1869getattr_return:
1855 rcu_read_unlock(); 1870 rcu_read_unlock();
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index fd53c7ae2977..7f5df0cbc63f 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -241,6 +241,7 @@ int netlbl_unlabel_getattr(struct netlbl_lsm_secattr *secattr)
241 if (netlabel_unlabel_acceptflg == 0) 241 if (netlabel_unlabel_acceptflg == 0)
242 return -ENOMSG; 242 return -ENOMSG;
243 netlbl_secattr_init(secattr); 243 netlbl_secattr_init(secattr);
244 secattr->type = NETLBL_NLTYPE_UNLABELED;
244 return 0; 245 return 0;
245} 246}
246 247
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