if (!!values[i] != policydb.bool_val_to_struct[i]->state) {
audit_log(current->audit_context, GFP_ATOMIC,
AUDIT_MAC_CONFIG_CHANGE,
- "bool=%s val=%d old_val=%d auid=%u",
+ "bool=%s val=%d old_val=%d auid=%u ses=%u",
policydb.p_bool_val_to_name[i],
!!values[i],
policydb.bool_val_to_struct[i]->state,
- audit_get_loginuid(current->audit_context));
+ audit_get_loginuid(current),
+ audit_get_sessionid(current));
}
if (values[i]) {
policydb.bool_val_to_struct[i]->state = 1;
return policydb.allow_unknown;
}
-/**
- * security_get_policycaps - Query the loaded policy for its capabilities
- * @len: the number of capability bits
- * @values: the capability bit array
- *
- * Description:
- * Get an array of the policy capabilities in @values where each entry in
- * @values is either true (1) or false (0) depending the policy's support of
- * that feature. The policy capabilities are defined by the
- * POLICYDB_CAPABILITY_* enums. The size of the array is stored in @len and it
- * is up to the caller to free the array in @values. Returns zero on success,
- * negative values on failure.
- *
- */
-int security_get_policycaps(int *len, int **values)
-{
- int rc = -ENOMEM;
- unsigned int iter;
-
- POLICY_RDLOCK;
-
- *values = kcalloc(POLICYDB_CAPABILITY_MAX, sizeof(int), GFP_ATOMIC);
- if (*values == NULL)
- goto out;
- for (iter = 0; iter < POLICYDB_CAPABILITY_MAX; iter++)
- (*values)[iter] = ebitmap_get_bit(&policydb.policycaps, iter);
- *len = POLICYDB_CAPABILITY_MAX;
-
-out:
- POLICY_RDUNLOCK;
- return rc;
-}
-
/**
* security_policycap_supported - Check for a specific policy capability
* @req_cap: capability
}
#ifdef CONFIG_NETLABEL
-/*
- * NetLabel cache structure
- */
-#define NETLBL_CACHE(x) ((struct selinux_netlbl_cache *)(x))
-#define NETLBL_CACHE_T_NONE 0
-#define NETLBL_CACHE_T_SID 1
-#define NETLBL_CACHE_T_MLS 2
-struct selinux_netlbl_cache {
- u32 type;
- union {
- u32 sid;
- struct mls_range mls_label;
- } data;
-};
-
-/**
- * security_netlbl_cache_free - Free the NetLabel cached data
- * @data: the data to free
- *
- * Description:
- * This function is intended to be used as the free() callback inside the
- * netlbl_lsm_cache structure.
- *
- */
-static void security_netlbl_cache_free(const void *data)
-{
- struct selinux_netlbl_cache *cache;
-
- if (data == NULL)
- return;
-
- cache = NETLBL_CACHE(data);
- switch (cache->type) {
- case NETLBL_CACHE_T_MLS:
- ebitmap_destroy(&cache->data.mls_label.level[0].cat);
- break;
- }
- kfree(data);
-}
-
/**
* security_netlbl_cache_add - Add an entry to the NetLabel cache
* @secattr: the NetLabel packet security attributes
- * @ctx: the SELinux context
+ * @sid: the SELinux SID
*
* Description:
* Attempt to cache the context in @ctx, which was derived from the packet in
*
*/
static void security_netlbl_cache_add(struct netlbl_lsm_secattr *secattr,
- struct context *ctx)
+ u32 sid)
{
- struct selinux_netlbl_cache *cache = NULL;
-
- secattr->cache = netlbl_secattr_cache_alloc(GFP_ATOMIC);
- if (secattr->cache == NULL)
- return;
+ u32 *sid_cache;
- cache = kzalloc(sizeof(*cache), GFP_ATOMIC);
- if (cache == NULL)
+ sid_cache = kmalloc(sizeof(*sid_cache), GFP_ATOMIC);
+ if (sid_cache == NULL)
return;
-
- cache->type = NETLBL_CACHE_T_MLS;
- if (ebitmap_cpy(&cache->data.mls_label.level[0].cat,
- &ctx->range.level[0].cat) != 0) {
- kfree(cache);
+ secattr->cache = netlbl_secattr_cache_alloc(GFP_ATOMIC);
+ if (secattr->cache == NULL) {
+ kfree(sid_cache);
return;
}
- cache->data.mls_label.level[1].cat.highbit =
- cache->data.mls_label.level[0].cat.highbit;
- cache->data.mls_label.level[1].cat.node =
- cache->data.mls_label.level[0].cat.node;
- cache->data.mls_label.level[0].sens = ctx->range.level[0].sens;
- cache->data.mls_label.level[1].sens = ctx->range.level[0].sens;
- secattr->cache->free = security_netlbl_cache_free;
- secattr->cache->data = (void *)cache;
+ *sid_cache = sid;
+ secattr->cache->free = kfree;
+ secattr->cache->data = sid_cache;
secattr->flags |= NETLBL_SECATTR_CACHE;
}
/**
* security_netlbl_secattr_to_sid - Convert a NetLabel secattr to a SELinux SID
* @secattr: the NetLabel packet security attributes
- * @base_sid: the SELinux SID to use as a context for MLS only attributes
* @sid: the SELinux SID
*
* Description:
* Convert the given NetLabel security attributes in @secattr into a
* SELinux SID. If the @secattr field does not contain a full SELinux
- * SID/context then use the context in @base_sid as the foundation. If
- * possibile the 'cache' field of @secattr is set and the CACHE flag is set;
- * this is to allow the @secattr to be used by NetLabel to cache the secattr to
- * SID conversion for future lookups. Returns zero on success, negative
- * values on failure.
+ * SID/context then use SECINITSID_NETMSG as the foundation. If possibile the
+ * 'cache' field of @secattr is set and the CACHE flag is set; this is to
+ * allow the @secattr to be used by NetLabel to cache the secattr to SID
+ * conversion for future lookups. Returns zero on success, negative values on
+ * failure.
*
*/
int security_netlbl_secattr_to_sid(struct netlbl_lsm_secattr *secattr,
- u32 base_sid,
u32 *sid)
{
int rc = -EIDRM;
struct context *ctx;
struct context ctx_new;
- struct selinux_netlbl_cache *cache;
if (!ss_initialized) {
*sid = SECSID_NULL;
POLICY_RDLOCK;
if (secattr->flags & NETLBL_SECATTR_CACHE) {
- cache = NETLBL_CACHE(secattr->cache->data);
- switch (cache->type) {
- case NETLBL_CACHE_T_SID:
- *sid = cache->data.sid;
- rc = 0;
- break;
- case NETLBL_CACHE_T_MLS:
- ctx = sidtab_search(&sidtab, base_sid);
- if (ctx == NULL)
- goto netlbl_secattr_to_sid_return;
-
- ctx_new.user = ctx->user;
- ctx_new.role = ctx->role;
- ctx_new.type = ctx->type;
- ctx_new.range.level[0].sens =
- cache->data.mls_label.level[0].sens;
- ctx_new.range.level[0].cat.highbit =
- cache->data.mls_label.level[0].cat.highbit;
- ctx_new.range.level[0].cat.node =
- cache->data.mls_label.level[0].cat.node;
- ctx_new.range.level[1].sens =
- cache->data.mls_label.level[1].sens;
- ctx_new.range.level[1].cat.highbit =
- cache->data.mls_label.level[1].cat.highbit;
- ctx_new.range.level[1].cat.node =
- cache->data.mls_label.level[1].cat.node;
-
- rc = sidtab_context_to_sid(&sidtab, &ctx_new, sid);
- break;
- default:
- goto netlbl_secattr_to_sid_return;
- }
+ *sid = *(u32 *)secattr->cache->data;
+ rc = 0;
} else if (secattr->flags & NETLBL_SECATTR_SECID) {
*sid = secattr->attr.secid;
rc = 0;
} else if (secattr->flags & NETLBL_SECATTR_MLS_LVL) {
- ctx = sidtab_search(&sidtab, base_sid);
+ ctx = sidtab_search(&sidtab, SECINITSID_NETMSG);
if (ctx == NULL)
goto netlbl_secattr_to_sid_return;
if (rc != 0)
goto netlbl_secattr_to_sid_return_cleanup;
- security_netlbl_cache_add(secattr, &ctx_new);
+ security_netlbl_cache_add(secattr, *sid);
ebitmap_destroy(&ctx_new.range.level[0].cat);
} else {
netlbl_sid_to_secattr_failure:
POLICY_RDUNLOCK;
- netlbl_secattr_destroy(secattr);
return rc;
}
#endif /* CONFIG_NETLABEL */
git.samba.org / sfrench / cifs-2.6.git / blobdiff