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NetLabel: Add secid token support to the NetLabel secattr struct

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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>
This commit is contained in:
Paul Moore
2008-01-29 08:37:59 -05:00
committed by James Morris
parent 1c3fad936a
commit 16efd45435
5 changed files with 120 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
net/ipv4/cipso_ipv4.c
View File

@@ -348,6 +348,7 @@ static int cipso_v4_cache_check(const unsigned char *key,
atomic_inc(&entry->lsm_data->refcount);
secattr->cache = entry->lsm_data;
secattr->flags |= NETLBL_SECATTR_CACHE;
secattr->type = NETLBL_NLTYPE_CIPSOV4;
if (prev_entry == NULL) {
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return 0;
@@ -865,7 +866,7 @@ static int cipso_v4_map_cat_rbm_hton(const struct cipso_v4_doi *doi_def,
}
for (;;) {
host_spot = netlbl_secattr_catmap_walk(secattr->mls_cat,
host_spot = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
host_spot + 1);
if (host_spot < 0)
break;
@@ -948,7 +949,7 @@ static int cipso_v4_map_cat_rbm_ntoh(const struct cipso_v4_doi *doi_def,
return -EPERM;
break;
}
ret_val = netlbl_secattr_catmap_setbit(secattr->mls_cat,
ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
host_spot,
GFP_ATOMIC);
if (ret_val != 0)
@@ -1014,7 +1015,8 @@ static int cipso_v4_map_cat_enum_hton(const struct cipso_v4_doi *doi_def,
u32 cat_iter = 0;
for (;;) {
cat = netlbl_secattr_catmap_walk(secattr->mls_cat, cat + 1);
cat = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
cat + 1);
if (cat < 0)
break;
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,
u32 iter;
for (iter = 0; iter < net_cat_len; iter += 2) {
ret_val = netlbl_secattr_catmap_setbit(secattr->mls_cat,
ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
ntohs(get_unaligned((__be16 *)&net_cat[iter])),
GFP_ATOMIC);
if (ret_val != 0)
@@ -1130,7 +1132,8 @@ static int cipso_v4_map_cat_rng_hton(const struct cipso_v4_doi *doi_def,
return -ENOSPC;
for (;;) {
iter = netlbl_secattr_catmap_walk(secattr->mls_cat, iter + 1);
iter = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
iter + 1);
if (iter < 0)
break;
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,
return -ENOSPC;
array[array_cnt++] = iter;
iter = netlbl_secattr_catmap_walk_rng(secattr->mls_cat, iter);
iter = netlbl_secattr_catmap_walk_rng(secattr->attr.mls.cat,
iter);
if (iter < 0)
return -EFAULT;
cat_size += sizeof(u16);
@@ -1191,7 +1195,7 @@ static int cipso_v4_map_cat_rng_ntoh(const struct cipso_v4_doi *doi_def,
else
cat_low = 0;
ret_val = netlbl_secattr_catmap_setrng(secattr->mls_cat,
ret_val = netlbl_secattr_catmap_setrng(secattr->attr.mls.cat,
cat_low,
cat_high,
GFP_ATOMIC);
@@ -1251,7 +1255,9 @@ static int cipso_v4_gentag_rbm(const struct cipso_v4_doi *doi_def,
if ((secattr->flags & NETLBL_SECATTR_MLS_LVL) == 0)
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def, secattr->mls_lvl, &level);
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
@@ -1303,12 +1309,13 @@ static int cipso_v4_parsetag_rbm(const struct cipso_v4_doi *doi_def,
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->mls_lvl = level;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->mls_cat = netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->mls_cat == NULL)
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
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,
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->mls_cat);
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
@@ -1350,7 +1357,9 @@ static int cipso_v4_gentag_enum(const struct cipso_v4_doi *doi_def,
if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def, secattr->mls_lvl, &level);
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
@@ -1396,12 +1405,13 @@ static int cipso_v4_parsetag_enum(const struct cipso_v4_doi *doi_def,
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->mls_lvl = level;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->mls_cat = netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->mls_cat == NULL)
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
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,
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->mls_cat);
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
@@ -1443,7 +1453,9 @@ static int cipso_v4_gentag_rng(const struct cipso_v4_doi *doi_def,
if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def, secattr->mls_lvl, &level);
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
@@ -1488,12 +1500,13 @@ static int cipso_v4_parsetag_rng(const struct cipso_v4_doi *doi_def,
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->mls_lvl = level;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->mls_cat = netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->mls_cat == NULL)
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
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,
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->mls_cat);
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
@@ -1850,6 +1863,8 @@ static int cipso_v4_getattr(const unsigned char *cipso,
ret_val = cipso_v4_parsetag_rng(doi_def, &cipso[6], secattr);
break;
}
if (ret_val == 0)
secattr->type = NETLBL_NLTYPE_CIPSOV4;
getattr_return:
rcu_read_unlock();