#include <linux/sched.h>
#include <linux/audit.h>
#include <linux/mutex.h>
+#include <linux/selinux.h>
#include <net/netlabel.h>
#include "flask.h"
#include "netlabel.h"
#include "xfrm.h"
#include "ebitmap.h"
+#include "audit.h"
extern void selnl_notify_policyload(u32 seqno);
unsigned int policydb_loaded_version;
int selinux_policycap_netpeer;
+int selinux_policycap_openperm;
/*
* This is declared in avc.c
return 0;
inval_class:
- printk(KERN_ERR "%s: unrecognized class %d\n", __FUNCTION__, tclass);
+ printk(KERN_ERR "%s: unrecognized class %d\n", __func__, tclass);
return -EINVAL;
}
+/*
+ * Given a sid find if the type has the permissive flag set
+ */
+int security_permissive_sid(u32 sid)
+{
+ struct context *context;
+ u32 type;
+ int rc;
+
+ POLICY_RDLOCK;
+
+ context = sidtab_search(&sidtab, sid);
+ BUG_ON(!context);
+
+ type = context->type;
+ /*
+ * we are intentionally using type here, not type-1, the 0th bit may
+ * someday indicate that we are globally setting permissive in policy.
+ */
+ rc = ebitmap_get_bit(&policydb.permissive_map, type);
+
+ POLICY_RDUNLOCK;
+ return rc;
+}
+
static int security_validtrans_handle_fail(struct context *ocontext,
struct context *ncontext,
struct context *tcontext,
}
-static int security_context_to_sid_core(char *scontext, u32 scontext_len, u32 *sid, u32 def_sid)
+static int security_context_to_sid_core(char *scontext, u32 scontext_len,
+ u32 *sid, u32 def_sid, gfp_t gfp_flags)
{
char *scontext2;
struct context context;
null suffix to the copy to avoid problems with the existing
attr package, which doesn't view the null terminator as part
of the attribute value. */
- scontext2 = kmalloc(scontext_len+1,GFP_KERNEL);
+ scontext2 = kmalloc(scontext_len+1, gfp_flags);
if (!scontext2) {
rc = -ENOMEM;
goto out;
int security_context_to_sid(char *scontext, u32 scontext_len, u32 *sid)
{
return security_context_to_sid_core(scontext, scontext_len,
- sid, SECSID_NULL);
+ sid, SECSID_NULL, GFP_KERNEL);
}
/**
* Returns -%EINVAL if the context is invalid, -%ENOMEM if insufficient
* memory is available, or 0 on success.
*/
-int security_context_to_sid_default(char *scontext, u32 scontext_len, u32 *sid, u32 def_sid)
+int security_context_to_sid_default(char *scontext, u32 scontext_len, u32 *sid,
+ u32 def_sid, gfp_t gfp_flags)
{
return security_context_to_sid_core(scontext, scontext_len,
- sid, def_sid);
+ sid, def_sid, gfp_flags);
}
static int compute_sid_handle_invalid_context(
continue;
if (i > p->p_classes.nprim) {
printk(KERN_INFO
- "security: class %s not defined in policy\n",
+ "SELinux: class %s not defined in policy\n",
def_class);
if (p->reject_unknown)
return -EINVAL;
pol_class = p->p_class_val_to_name[i-1];
if (strcmp(pol_class, def_class)) {
printk(KERN_ERR
- "security: class %d is incorrect, found %s but should be %s\n",
+ "SELinux: class %d is incorrect, found %s but should be %s\n",
i, pol_class, def_class);
return -EINVAL;
}
nprim = 1 << (perms->nprim - 1);
if (perm_val > nprim) {
printk(KERN_INFO
- "security: permission %s in class %s not defined in policy\n",
+ "SELinux: permission %s in class %s not defined in policy\n",
def_perm, pol_class);
if (p->reject_unknown)
return -EINVAL;
perdatum = hashtab_search(perms->table, def_perm);
if (perdatum == NULL) {
printk(KERN_ERR
- "security: permission %s in class %s not found in policy, bad policy\n",
+ "SELinux: permission %s in class %s not found in policy, bad policy\n",
def_perm, pol_class);
return -EINVAL;
}
pol_val = 1 << (perdatum->value - 1);
if (pol_val != perm_val) {
printk(KERN_ERR
- "security: permission %s in class %s has incorrect value\n",
+ "SELinux: permission %s in class %s has incorrect value\n",
def_perm, pol_class);
return -EINVAL;
}
BUG_ON(!cladatum);
if (!cladatum->comdatum) {
printk(KERN_ERR
- "security: class %s should have an inherits clause but does not\n",
+ "SELinux: class %s should have an inherits clause but does not\n",
pol_class);
return -EINVAL;
}
def_perm = kdefs->av_inherit[i].common_pts[j];
if (j >= perms->nprim) {
printk(KERN_INFO
- "security: permission %s in class %s not defined in policy\n",
+ "SELinux: permission %s in class %s not defined in policy\n",
def_perm, pol_class);
if (p->reject_unknown)
return -EINVAL;
perdatum = hashtab_search(perms->table, def_perm);
if (perdatum == NULL) {
printk(KERN_ERR
- "security: permission %s in class %s not found in policy, bad policy\n",
+ "SELinux: permission %s in class %s not found in policy, bad policy\n",
def_perm, pol_class);
return -EINVAL;
}
if (perdatum->value != j + 1) {
printk(KERN_ERR
- "security: permission %s in class %s has incorrect value\n",
+ "SELinux: permission %s in class %s has incorrect value\n",
def_perm, pol_class);
return -EINVAL;
}
u32 len;
context_struct_to_string(context, &s, &len);
- printk(KERN_ERR "security: context %s is invalid\n", s);
+ printk(KERN_ERR "SELinux: context %s is invalid\n", s);
kfree(s);
}
return rc;
bad:
context_struct_to_string(&oldc, &s, &len);
context_destroy(&oldc);
- printk(KERN_ERR "security: invalidating context %s\n", s);
+ printk(KERN_ERR "SELinux: invalidating context %s\n", s);
kfree(s);
goto out;
}
{
selinux_policycap_netpeer = ebitmap_get_bit(&policydb.policycaps,
POLICYDB_CAPABILITY_NETPEER);
+ selinux_policycap_openperm = ebitmap_get_bit(&policydb.policycaps,
+ POLICYDB_CAPABILITY_OPENPERM);
}
extern void selinux_complete_init(void);
/* Verify that the kernel defined classes are correct. */
if (validate_classes(&policydb)) {
printk(KERN_ERR
- "security: the definition of a class is incorrect\n");
+ "SELinux: the definition of a class is incorrect\n");
LOAD_UNLOCK;
sidtab_destroy(&sidtab);
policydb_destroy(&policydb);
/* Verify that the kernel defined classes are correct. */
if (validate_classes(&newpolicydb)) {
printk(KERN_ERR
- "security: the definition of a class is incorrect\n");
+ "SELinux: the definition of a class is incorrect\n");
rc = -EINVAL;
goto err;
}
rc = security_preserve_bools(&newpolicydb);
if (rc) {
- printk(KERN_ERR "security: unable to preserve booleans\n");
+ printk(KERN_ERR "SELinux: unable to preserve booleans\n");
goto err;
}
/**
* security_port_sid - Obtain the SID for a port.
- * @domain: communication domain aka address family
- * @type: socket type
* @protocol: protocol number
* @port: port number
* @out_sid: security identifier
*/
-int security_port_sid(u16 domain,
- u16 type,
- u8 protocol,
- u16 port,
- u32 *out_sid)
+int security_port_sid(u8 protocol, u16 port, u32 *out_sid)
{
struct ocontext *c;
int rc = 0;
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;
match = hashtab_search(policydb.p_classes.table, class);
if (!match) {
printk(KERN_ERR "%s: unrecognized class %s\n",
- __FUNCTION__, class);
+ __func__, class);
rc = -EINVAL;
goto out;
}
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
struct context au_ctxt;
};
-void selinux_audit_rule_free(struct selinux_audit_rule *rule)
+void selinux_audit_rule_free(void *vrule)
{
+ struct selinux_audit_rule *rule = vrule;
+
if (rule) {
context_destroy(&rule->au_ctxt);
kfree(rule);
}
}
-int selinux_audit_rule_init(u32 field, u32 op, char *rulestr,
- struct selinux_audit_rule **rule)
+int selinux_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule)
{
struct selinux_audit_rule *tmprule;
struct role_datum *roledatum;
struct type_datum *typedatum;
struct user_datum *userdatum;
+ struct selinux_audit_rule **rule = (struct selinux_audit_rule **)vrule;
int rc = 0;
*rule = NULL;
return rc;
}
-int selinux_audit_rule_match(u32 sid, u32 field, u32 op,
- struct selinux_audit_rule *rule,
+/* Check to see if the rule contains any selinux fields */
+int selinux_audit_rule_known(struct audit_krule *rule)
+{
+ int i;
+
+ for (i = 0; i < rule->field_count; i++) {
+ struct audit_field *f = &rule->fields[i];
+ switch (f->type) {
+ case AUDIT_SUBJ_USER:
+ case AUDIT_SUBJ_ROLE:
+ case AUDIT_SUBJ_TYPE:
+ case AUDIT_SUBJ_SEN:
+ case AUDIT_SUBJ_CLR:
+ case AUDIT_OBJ_USER:
+ case AUDIT_OBJ_ROLE:
+ case AUDIT_OBJ_TYPE:
+ case AUDIT_OBJ_LEV_LOW:
+ case AUDIT_OBJ_LEV_HIGH:
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *vrule,
struct audit_context *actx)
{
struct context *ctxt;
struct mls_level *level;
+ struct selinux_audit_rule *rule = vrule;
int match = 0;
if (!rule) {
return match;
}
-static int (*aurule_callback)(void) = NULL;
+static int (*aurule_callback)(void) = audit_update_lsm_rules;
static int aurule_avc_callback(u32 event, u32 ssid, u32 tsid,
u16 class, u32 perms, u32 *retained)
}
__initcall(aurule_init);
-void selinux_audit_set_callback(int (*callback)(void))
-{
- aurule_callback = callback;
-}
-
#ifdef CONFIG_NETLABEL
/**
* security_netlbl_cache_add - Add an entry to the NetLabel cache
goto netlbl_sid_to_secattr_failure;
secattr->domain = kstrdup(policydb.p_type_val_to_name[ctx->type - 1],
GFP_ATOMIC);
- secattr->flags |= NETLBL_SECATTR_DOMAIN;
+ secattr->flags |= NETLBL_SECATTR_DOMAIN_CPY;
mls_export_netlbl_lvl(ctx, secattr);
rc = mls_export_netlbl_cat(ctx, secattr);
if (rc != 0)
netlbl_sid_to_secattr_failure:
POLICY_RDUNLOCK;
- netlbl_secattr_destroy(secattr);
return rc;
}
#endif /* CONFIG_NETLABEL */
projects / linux-2.6 / blobdiff