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-rw-r--r--security/tomoyo/audit.c8
-rw-r--r--security/tomoyo/common.c383
-rw-r--r--security/tomoyo/common.h63
-rw-r--r--security/tomoyo/domain.c360
-rw-r--r--security/tomoyo/file.c2
-rw-r--r--security/tomoyo/gc.c73
-rw-r--r--security/tomoyo/memory.c21
-rw-r--r--security/tomoyo/util.c58
8 files changed, 669 insertions, 299 deletions
diff --git a/security/tomoyo/audit.c b/security/tomoyo/audit.c
index e882f17065f2..ef2172f29583 100644
--- a/security/tomoyo/audit.c
+++ b/security/tomoyo/audit.c
@@ -151,13 +151,15 @@ static unsigned int tomoyo_log_count;
/**
* tomoyo_get_audit - Get audit mode.
*
+ * @ns: Pointer to "struct tomoyo_policy_namespace".
* @profile: Profile number.
* @index: Index number of functionality.
* @is_granted: True if granted log, false otherwise.
*
* Returns true if this request should be audited, false otherwise.
*/
-static bool tomoyo_get_audit(const u8 profile, const u8 index,
+static bool tomoyo_get_audit(const struct tomoyo_policy_namespace *ns,
+ const u8 profile, const u8 index,
const bool is_granted)
{
u8 mode;
@@ -165,7 +167,7 @@ static bool tomoyo_get_audit(const u8 profile, const u8 index,
struct tomoyo_profile *p;
if (!tomoyo_policy_loaded)
return false;
- p = tomoyo_profile(profile);
+ p = tomoyo_profile(ns, profile);
if (tomoyo_log_count >= p->pref[TOMOYO_PREF_MAX_AUDIT_LOG])
return false;
mode = p->config[index];
@@ -194,7 +196,7 @@ void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
char *buf;
struct tomoyo_log *entry;
bool quota_exceeded = false;
- if (!tomoyo_get_audit(r->profile, r->type, r->granted))
+ if (!tomoyo_get_audit(r->domain->ns, r->profile, r->type, r->granted))
goto out;
buf = tomoyo_init_log(r, len, fmt, args);
if (!buf)
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 507ebf01e43b..50481d2cf970 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -11,12 +11,6 @@
#include <linux/security.h>
#include "common.h"
-/* Profile version. Currently only 20090903 is defined. */
-static unsigned int tomoyo_profile_version;
-
-/* Profile table. Memory is allocated as needed. */
-static struct tomoyo_profile *tomoyo_profile_ptr[TOMOYO_MAX_PROFILES];
-
/* String table for operation mode. */
const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE] = {
[TOMOYO_CONFIG_DISABLED] = "disabled",
@@ -216,6 +210,50 @@ static void tomoyo_set_slash(struct tomoyo_io_buffer *head)
tomoyo_set_string(head, "/");
}
+/* List of namespaces. */
+LIST_HEAD(tomoyo_namespace_list);
+/* True if namespace other than tomoyo_kernel_namespace is defined. */
+static bool tomoyo_namespace_enabled;
+
+/**
+ * tomoyo_init_policy_namespace - Initialize namespace.
+ *
+ * @ns: Pointer to "struct tomoyo_policy_namespace".
+ *
+ * Returns nothing.
+ */
+void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns)
+{
+ unsigned int idx;
+ for (idx = 0; idx < TOMOYO_MAX_ACL_GROUPS; idx++)
+ INIT_LIST_HEAD(&ns->acl_group[idx]);
+ for (idx = 0; idx < TOMOYO_MAX_GROUP; idx++)
+ INIT_LIST_HEAD(&ns->group_list[idx]);
+ for (idx = 0; idx < TOMOYO_MAX_POLICY; idx++)
+ INIT_LIST_HEAD(&ns->policy_list[idx]);
+ ns->profile_version = 20100903;
+ tomoyo_namespace_enabled = !list_empty(&tomoyo_namespace_list);
+ list_add_tail_rcu(&ns->namespace_list, &tomoyo_namespace_list);
+}
+
+/**
+ * tomoyo_print_namespace - Print namespace header.
+ *
+ * @head: Pointer to "struct tomoyo_io_buffer".
+ *
+ * Returns nothing.
+ */
+static void tomoyo_print_namespace(struct tomoyo_io_buffer *head)
+{
+ if (!tomoyo_namespace_enabled)
+ return;
+ tomoyo_set_string(head,
+ container_of(head->r.ns,
+ struct tomoyo_policy_namespace,
+ namespace_list)->name);
+ tomoyo_set_space(head);
+}
+
/**
* tomoyo_print_name_union - Print a tomoyo_name_union.
*
@@ -283,23 +321,25 @@ static void tomoyo_print_number_union(struct tomoyo_io_buffer *head,
/**
* tomoyo_assign_profile - Create a new profile.
*
+ * @ns: Pointer to "struct tomoyo_policy_namespace".
* @profile: Profile number to create.
*
* Returns pointer to "struct tomoyo_profile" on success, NULL otherwise.
*/
-static struct tomoyo_profile *tomoyo_assign_profile(const unsigned int profile)
+static struct tomoyo_profile *tomoyo_assign_profile
+(struct tomoyo_policy_namespace *ns, const unsigned int profile)
{
struct tomoyo_profile *ptr;
struct tomoyo_profile *entry;
if (profile >= TOMOYO_MAX_PROFILES)
return NULL;
- ptr = tomoyo_profile_ptr[profile];
+ ptr = ns->profile_ptr[profile];
if (ptr)
return ptr;
entry = kzalloc(sizeof(*entry), GFP_NOFS);
if (mutex_lock_interruptible(&tomoyo_policy_lock))
goto out;
- ptr = tomoyo_profile_ptr[profile];
+ ptr = ns->profile_ptr[profile];
if (!ptr && tomoyo_memory_ok(entry)) {
ptr = entry;
ptr->default_config = TOMOYO_CONFIG_DISABLED |
@@ -310,7 +350,7 @@ static struct tomoyo_profile *tomoyo_assign_profile(const unsigned int profile)
ptr->pref[TOMOYO_PREF_MAX_AUDIT_LOG] = 1024;
ptr->pref[TOMOYO_PREF_MAX_LEARNING_ENTRY] = 2048;
mb(); /* Avoid out-of-order execution. */
- tomoyo_profile_ptr[profile] = ptr;
+ ns->profile_ptr[profile] = ptr;
entry = NULL;
}
mutex_unlock(&tomoyo_policy_lock);
@@ -322,14 +362,16 @@ static struct tomoyo_profile *tomoyo_assign_profile(const unsigned int profile)
/**
* tomoyo_profile - Find a profile.
*
+ * @ns: Pointer to "struct tomoyo_policy_namespace".
* @profile: Profile number to find.
*
* Returns pointer to "struct tomoyo_profile".
*/
-struct tomoyo_profile *tomoyo_profile(const u8 profile)
+struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
+ const u8 profile)
{
static struct tomoyo_profile tomoyo_null_profile;
- struct tomoyo_profile *ptr = tomoyo_profile_ptr[profile];
+ struct tomoyo_profile *ptr = ns->profile_ptr[profile];
if (!ptr)
ptr = &tomoyo_null_profile;
return ptr;
@@ -454,13 +496,14 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
unsigned int i;
char *cp;
struct tomoyo_profile *profile;
- if (sscanf(data, "PROFILE_VERSION=%u", &tomoyo_profile_version) == 1)
+ if (sscanf(data, "PROFILE_VERSION=%u", &head->w.ns->profile_version)
+ == 1)
return 0;
i = simple_strtoul(data, &cp, 10);
if (*cp != '-')
return -EINVAL;
data = cp + 1;
- profile = tomoyo_assign_profile(i);
+ profile = tomoyo_assign_profile(head->w.ns, i);
if (!profile)
return -EINVAL;
cp = strchr(data, '=');
@@ -518,19 +561,25 @@ static void tomoyo_print_config(struct tomoyo_io_buffer *head, const u8 config)
static void tomoyo_read_profile(struct tomoyo_io_buffer *head)
{
u8 index;
+ struct tomoyo_policy_namespace *ns =
+ container_of(head->r.ns, typeof(*ns), namespace_list);
const struct tomoyo_profile *profile;
+ if (head->r.eof)
+ return;
next:
index = head->r.index;
- profile = tomoyo_profile_ptr[index];
+ profile = ns->profile_ptr[index];
switch (head->r.step) {
case 0:
- tomoyo_io_printf(head, "PROFILE_VERSION=%u\n", 20090903);
+ tomoyo_print_namespace(head);
+ tomoyo_io_printf(head, "PROFILE_VERSION=%u\n",
+ ns->profile_version);
head->r.step++;
break;
case 1:
for ( ; head->r.index < TOMOYO_MAX_PROFILES;
head->r.index++)
- if (tomoyo_profile_ptr[head->r.index])
+ if (ns->profile_ptr[head->r.index])
break;
if (head->r.index == TOMOYO_MAX_PROFILES)
return;
@@ -541,6 +590,7 @@ static void tomoyo_read_profile(struct tomoyo_io_buffer *head)
u8 i;
const struct tomoyo_path_info *comment =
profile->comment;
+ tomoyo_print_namespace(head);
tomoyo_io_printf(head, "%u-COMMENT=", index);
tomoyo_set_string(head, comment ? comment->name : "");
tomoyo_set_lf(head);
@@ -555,6 +605,7 @@ static void tomoyo_read_profile(struct tomoyo_io_buffer *head)
break;
case 3:
{
+ tomoyo_print_namespace(head);
tomoyo_io_printf(head, "%u-%s", index, "CONFIG");
tomoyo_print_config(head, profile->default_config);
head->r.bit = 0;
@@ -568,6 +619,7 @@ static void tomoyo_read_profile(struct tomoyo_io_buffer *head)
const u8 config = profile->config[i];
if (config == TOMOYO_CONFIG_USE_DEFAULT)
continue;
+ tomoyo_print_namespace(head);
tomoyo_io_printf(head, "%u-%s%s", index, "CONFIG::",
tomoyo_mac_keywords[i]);
tomoyo_print_config(head, config);
@@ -607,8 +659,10 @@ static int tomoyo_update_manager_entry(const char *manager,
{
struct tomoyo_manager e = { };
struct tomoyo_acl_param param = {
+ /* .ns = &tomoyo_kernel_namespace, */
.is_delete = is_delete,
- .list = &tomoyo_policy_list[TOMOYO_ID_MANAGER],
+ .list = &tomoyo_kernel_namespace.
+ policy_list[TOMOYO_ID_MANAGER],
};
int error = is_delete ? -ENOENT : -ENOMEM;
if (tomoyo_domain_def(manager)) {
@@ -640,13 +694,12 @@ static int tomoyo_update_manager_entry(const char *manager,
static int tomoyo_write_manager(struct tomoyo_io_buffer *head)
{
char *data = head->write_buf;
- bool is_delete = tomoyo_str_starts(&data, "delete ");
if (!strcmp(data, "manage_by_non_root")) {
- tomoyo_manage_by_non_root = !is_delete;
+ tomoyo_manage_by_non_root = !head->w.is_delete;
return 0;
}
- return tomoyo_update_manager_entry(data, is_delete);
+ return tomoyo_update_manager_entry(data, head->w.is_delete);
}
/**
@@ -660,8 +713,8 @@ static void tomoyo_read_manager(struct tomoyo_io_buffer *head)
{
if (head->r.eof)
return;
- list_for_each_cookie(head->r.acl,
- &tomoyo_policy_list[TOMOYO_ID_MANAGER]) {
+ list_for_each_cookie(head->r.acl, &tomoyo_kernel_namespace.
+ policy_list[TOMOYO_ID_MANAGER]) {
struct tomoyo_manager *ptr =
list_entry(head->r.acl, typeof(*ptr), head.list);
if (ptr->head.is_deleted)
@@ -694,8 +747,8 @@ static bool tomoyo_manager(void)
return true;
if (!tomoyo_manage_by_non_root && (task->cred->uid || task->cred->euid))
return false;
- list_for_each_entry_rcu(ptr, &tomoyo_policy_list[TOMOYO_ID_MANAGER],
- head.list) {
+ list_for_each_entry_rcu(ptr, &tomoyo_kernel_namespace.
+ policy_list[TOMOYO_ID_MANAGER], head.list) {
if (!ptr->head.is_deleted && ptr->is_domain
&& !tomoyo_pathcmp(domainname, ptr->manager)) {
found = true;
@@ -707,8 +760,8 @@ static bool tomoyo_manager(void)
exe = tomoyo_get_exe();
if (!exe)
return false;
- list_for_each_entry_rcu(ptr, &tomoyo_policy_list[TOMOYO_ID_MANAGER],
- head.list) {
+ list_for_each_entry_rcu(ptr, &tomoyo_kernel_namespace.
+ policy_list[TOMOYO_ID_MANAGER], head.list) {
if (!ptr->head.is_deleted && !ptr->is_domain
&& !strcmp(exe, ptr->manager->name)) {
found = true;
@@ -729,7 +782,7 @@ static bool tomoyo_manager(void)
}
/**
- * tomoyo_select_one - Parse select command.
+ * tomoyo_select_domain - Parse select command.
*
* @head: Pointer to "struct tomoyo_io_buffer".
* @data: String to parse.
@@ -738,16 +791,15 @@ static bool tomoyo_manager(void)
*
* Caller holds tomoyo_read_lock().
*/
-static bool tomoyo_select_one(struct tomoyo_io_buffer *head, const char *data)
+static bool tomoyo_select_domain(struct tomoyo_io_buffer *head,
+ const char *data)
{
unsigned int pid;
struct tomoyo_domain_info *domain = NULL;
bool global_pid = false;
-
- if (!strcmp(data, "allow_execute")) {
- head->r.print_execute_only = true;
- return true;
- }
+ if (strncmp(data, "select ", 7))
+ return false;
+ data += 7;
if (sscanf(data, "pid=%u", &pid) == 1 ||
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) {
struct task_struct *p;
@@ -818,6 +870,7 @@ static int tomoyo_delete_domain(char *domainname)
/**
* tomoyo_write_domain2 - Write domain policy.
*
+ * @ns: Pointer to "struct tomoyo_policy_namespace".
* @list: Pointer to "struct list_head".
* @data: Policy to be interpreted.
* @is_delete: True if it is a delete request.
@@ -826,10 +879,12 @@ static int tomoyo_delete_domain(char *domainname)
*
* Caller holds tomoyo_read_lock().
*/
-static int tomoyo_write_domain2(struct list_head *list, char *data,
+static int tomoyo_write_domain2(struct tomoyo_policy_namespace *ns,
+ struct list_head *list, char *data,
const bool is_delete)
{
struct tomoyo_acl_param param = {
+ .ns = ns,
.list = list,
.data = data,
.is_delete = is_delete,
@@ -862,37 +917,28 @@ static int tomoyo_write_domain2(struct list_head *list, char *data,
static int tomoyo_write_domain(struct tomoyo_io_buffer *head)
{
char *data = head->write_buf;
+ struct tomoyo_policy_namespace *ns;
struct tomoyo_domain_info *domain = head->w.domain;
- bool is_delete = false;
- bool is_select = false;
+ const bool is_delete = head->w.is_delete;
+ bool is_select = !is_delete && tomoyo_str_starts(&data, "select ");
unsigned int profile;
-
- if (tomoyo_str_starts(&data, "delete "))
- is_delete = true;
- else if (tomoyo_str_starts(&data, "select "))
- is_select = true;
- if (is_select && tomoyo_select_one(head, data))
- return 0;
- /* Don't allow updating policies by non manager programs. */
- if (!tomoyo_manager())
- return -EPERM;
- if (tomoyo_domain_def(data)) {
+ if (*data == '<') {
domain = NULL;
if (is_delete)
tomoyo_delete_domain(data);
else if (is_select)
domain = tomoyo_find_domain(data);
else
- domain = tomoyo_assign_domain(data, 0);
+ domain = tomoyo_assign_domain(data, false);
head->w.domain = domain;
return 0;
}
if (!domain)
return -EINVAL;
-
+ ns = domain->ns;
if (sscanf(data, "use_profile %u", &profile) == 1
&& profile < TOMOYO_MAX_PROFILES) {
- if (tomoyo_profile_ptr[profile] || !tomoyo_policy_loaded)
+ if (!tomoyo_policy_loaded || ns->profile_ptr[profile])
domain->profile = (u8) profile;
return 0;
}
@@ -910,7 +956,8 @@ static int tomoyo_write_domain(struct tomoyo_io_buffer *head)
domain->transition_failed = !is_delete;
return 0;
}
- return tomoyo_write_domain2(&domain->acl_info_list, data, is_delete);
+ return tomoyo_write_domain2(ns, &domain->acl_info_list, data,
+ is_delete);
}
/**
@@ -924,9 +971,11 @@ static int tomoyo_write_domain(struct tomoyo_io_buffer *head)
static void tomoyo_set_group(struct tomoyo_io_buffer *head,
const char *category)
{
- if (head->type == TOMOYO_EXCEPTIONPOLICY)
+ if (head->type == TOMOYO_EXCEPTIONPOLICY) {
+ tomoyo_print_namespace(head);
tomoyo_io_printf(head, "acl_group %u ",
head->r.acl_group_index);
+ }
tomoyo_set_string(head, category);
}
@@ -956,7 +1005,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
for (bit = 0; bit < TOMOYO_MAX_PATH_OPERATION; bit++) {
if (!(perm & (1 << bit)))
continue;
- if (head->r.print_execute_only &&
+ if (head->r.print_transition_related_only &&
bit != TOMOYO_TYPE_EXECUTE)
continue;
if (first) {
@@ -970,7 +1019,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
if (first)
return true;
tomoyo_print_name_union(head, &ptr->name);
- } else if (head->r.print_execute_only) {
+ } else if (head->r.print_transition_related_only) {
return true;
} else if (acl_type == TOMOYO_TYPE_PATH2_ACL) {
struct tomoyo_path2_acl *ptr =
@@ -1147,8 +1196,8 @@ static int tomoyo_write_domain_profile(struct tomoyo_io_buffer *head)
domain = tomoyo_find_domain(cp + 1);
if (strict_strtoul(data, 10, &profile))
return -EINVAL;
- if (domain && profile < TOMOYO_MAX_PROFILES
- && (tomoyo_profile_ptr[profile] || !tomoyo_policy_loaded))
+ if (domain && (!tomoyo_policy_loaded ||
+ head->w.ns->profile_ptr[(u8) profile]))
domain->profile = (u8) profile;
return 0;
}
@@ -1246,10 +1295,12 @@ static void tomoyo_read_pid(struct tomoyo_io_buffer *head)
}
static const char *tomoyo_transition_type[TOMOYO_MAX_TRANSITION_TYPE] = {
- [TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain",
- [TOMOYO_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain",
- [TOMOYO_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain",
- [TOMOYO_TRANSITION_CONTROL_KEEP] = "keep_domain",
+ [TOMOYO_TRANSITION_CONTROL_NO_RESET] = "no_reset_domain ",
+ [TOMOYO_TRANSITION_CONTROL_RESET] = "reset_domain ",
+ [TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE] = "no_initialize_domain ",
+ [TOMOYO_TRANSITION_CONTROL_INITIALIZE] = "initialize_domain ",
+ [TOMOYO_TRANSITION_CONTROL_NO_KEEP] = "no_keep_domain ",
+ [TOMOYO_TRANSITION_CONTROL_KEEP] = "keep_domain ",
};
static const char *tomoyo_group_name[TOMOYO_MAX_GROUP] = {
@@ -1268,19 +1319,13 @@ static const char *tomoyo_group_name[TOMOYO_MAX_GROUP] = {
*/
static int tomoyo_write_exception(struct tomoyo_io_buffer *head)
{
+ const bool is_delete = head->w.is_delete;
struct tomoyo_acl_param param = {
+ .ns = head->w.ns,
+ .is_delete = is_delete,
.data = head->write_buf,
};
u8 i;
- param.is_delete = tomoyo_str_starts(&param.data, "delete ");
- if (!param.is_delete && tomoyo_str_starts(&param.data, "select ") &&
- !strcmp(param.data, "execute_only")) {
- head->r.print_execute_only = true;
- return 0;
- }
- /* Don't allow updating policies by non manager programs. */
- if (!tomoyo_manager())
- return -EPERM;
if (tomoyo_str_starts(&param.data, "aggregator "))
return tomoyo_write_aggregator(&param);
for (i = 0; i < TOMOYO_MAX_TRANSITION_TYPE; i++)
@@ -1294,8 +1339,9 @@ static int tomoyo_write_exception(struct tomoyo_io_buffer *head)
char *data;
group = simple_strtoul(param.data, &data, 10);
if (group < TOMOYO_MAX_ACL_GROUPS && *data++ == ' ')
- return tomoyo_write_domain2(&tomoyo_acl_group[group],
- data, param.is_delete);
+ return tomoyo_write_domain2
+ (head->w.ns, &head->w.ns->acl_group[group],
+ data, is_delete);
}
return -EINVAL;
}
@@ -1312,7 +1358,10 @@ static int tomoyo_write_exception(struct tomoyo_io_buffer *head)
*/
static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx)
{
- list_for_each_cookie(head->r.group, &tomoyo_group_list[idx]) {
+ struct tomoyo_policy_namespace *ns =
+ container_of(head->r.ns, typeof(*ns), namespace_list);
+ struct list_head *list = &ns->group_list[idx];
+ list_for_each_cookie(head->r.group, list) {
struct tomoyo_group *group =
list_entry(head->r.group, typeof(*group), head.list);
list_for_each_cookie(head->r.acl, &group->member_list) {
@@ -1322,6 +1371,7 @@ static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx)
continue;
if (!tomoyo_flush(head))
return false;
+ tomoyo_print_namespace(head);
tomoyo_set_string(head, tomoyo_group_name[idx]);
tomoyo_set_string(head, group->group_name->name);
if (idx == TOMOYO_PATH_GROUP) {
@@ -1355,7 +1405,10 @@ static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx)
*/
static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
{
- list_for_each_cookie(head->r.acl, &tomoyo_policy_list[idx]) {
+ struct tomoyo_policy_namespace *ns =
+ container_of(head->r.ns, typeof(*ns), namespace_list);
+ struct list_head *list = &ns->policy_list[idx];
+ list_for_each_cookie(head->r.acl, list) {
struct tomoyo_acl_head *acl =
container_of(head->r.acl, typeof(*acl), list);
if (acl->is_deleted)
@@ -1367,6 +1420,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
{
struct tomoyo_transition_control *ptr =
container_of(acl, typeof(*ptr), head);
+ tomoyo_print_namespace(head);
tomoyo_set_string(head, tomoyo_transition_type
[ptr->type]);
tomoyo_set_string(head, ptr->program ?
@@ -1381,6 +1435,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
{
struct tomoyo_aggregator *ptr =
container_of(acl, typeof(*ptr), head);
+ tomoyo_print_namespace(head);
tomoyo_set_string(head, "aggregator ");
tomoyo_set_string(head,
ptr->original_name->name);
@@ -1407,6 +1462,8 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
*/
static void tomoyo_read_exception(struct tomoyo_io_buffer *head)
{
+ struct tomoyo_policy_namespace *ns =
+ container_of(head->r.ns, typeof(*ns), namespace_list);
if (head->r.eof)
return;
while (head->r.step < TOMOYO_MAX_POLICY &&
@@ -1423,7 +1480,7 @@ static void tomoyo_read_exception(struct tomoyo_io_buffer *head)
+ TOMOYO_MAX_ACL_GROUPS) {
head->r.acl_group_index = head->r.step - TOMOYO_MAX_POLICY
- TOMOYO_MAX_GROUP;
- if (!tomoyo_read_domain2(head, &tomoyo_acl_group
+ if (!tomoyo_read_domain2(head, &ns->acl_group
[head->r.acl_group_index]))
return;
head->r.step++;
@@ -1484,7 +1541,8 @@ static void tomoyo_add_entry(struct tomoyo_domain_info *domain, char *header)
return;
snprintf(buffer, len - 1, "%s", cp);
tomoyo_normalize_line(buffer);
- tomoyo_write_domain2(&domain->acl_info_list, buffer, false);
+ tomoyo_write_domain2(domain->ns, &domain->acl_info_list, buffer,
+ false);
kfree(buffer);
}
@@ -1896,6 +1954,45 @@ int tomoyo_poll_control(struct file *file, poll_table *wait)
}
/**
+ * tomoyo_set_namespace_cursor - Set namespace to read.
+ *
+ * @head: Pointer to "struct tomoyo_io_buffer".
+ *
+ * Returns nothing.
+ */
+static inline void tomoyo_set_namespace_cursor(struct tomoyo_io_buffer *head)
+{
+ struct list_head *ns;
+ if (head->type != TOMOYO_EXCEPTIONPOLICY &&
+ head->type != TOMOYO_PROFILE)
+ return;
+ /*
+ * If this is the first read, or reading previous namespace finished
+ * and has more namespaces to read, update the namespace cursor.
+ */
+ ns = head->r.ns;
+ if (!ns || (head->r.eof && ns->next != &tomoyo_namespace_list)) {
+ /* Clearing is OK because tomoyo_flush() returned true. */
+ memset(&head->r, 0, sizeof(head->r));
+ head->r.ns = ns ? ns->next : tomoyo_namespace_list.next;
+ }
+}
+
+/**
+ * tomoyo_has_more_namespace - Check for unread namespaces.
+ *
+ * @head: Pointer to "struct tomoyo_io_buffer".
+ *
+ * Returns true if we have more entries to print, false otherwise.
+ */
+static inline bool tomoyo_has_more_namespace(struct tomoyo_io_buffer *head)
+{
+ return (head->type == TOMOYO_EXCEPTIONPOLICY ||
+ head->type == TOMOYO_PROFILE) && head->r.eof &&
+ head->r.ns->next != &tomoyo_namespace_list;
+}
+
+/**
* tomoyo_read_control - read() for /sys/kernel/security/tomoyo/ interface.
*
* @head: Pointer to "struct tomoyo_io_buffer".
@@ -1919,14 +2016,54 @@ int tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer,
head->read_user_buf_avail = buffer_len;
if (tomoyo_flush(head))
/* Call the policy handler. */
- head->read(head);
- tomoyo_flush(head);
+ do {
+ tomoyo_set_namespace_cursor(head);
+ head->read(head);
+ } while (tomoyo_flush(head) &&
+ tomoyo_has_more_namespace(head));
len = head->read_user_buf - buffer;
mutex_unlock(&head->io_sem);
return len;
}
/**
+ * tomoyo_parse_policy - Parse a policy line.
+ *
+ * @head: Poiter to "struct tomoyo_io_buffer".
+ * @line: Line to parse.
+ *
+ * Returns 0 on success, negative value otherwise.
+ *
+ * Caller holds tomoyo_read_lock().
+ */
+static int tomoyo_parse_policy(struct tomoyo_io_buffer *head, char *line)
+{
+ /* Delete request? */
+ head->w.is_delete = !strncmp(line, "delete ", 7);
+ if (head->w.is_delete)
+ memmove(line, line + 7, strlen(line + 7) + 1);
+ /* Selecting namespace to update. */
+ if (head->type == TOMOYO_EXCEPTIONPOLICY ||
+ head->type == TOMOYO_PROFILE) {
+ if (*line == '<') {
+ char *cp = strchr(line, ' ');
+ if (cp) {
+ *cp++ = '\0';
+ head->w.ns = tomoyo_assign_namespace(line);
+ memmove(line, cp, strlen(cp) + 1);
+ } else
+ head->w.ns = NULL;
+ } else
+ head->w.ns = &tomoyo_kernel_namespace;
+ /* Don't allow updating if namespace is invalid. */
+ if (!head->w.ns)
+ return -ENOENT;
+ }
+ /* Do the update. */
+ return head->write(head);
+}
+
+/**
* tomoyo_write_control - write() for /sys/kernel/security/tomoyo/ interface.
*
* @head: Pointer to "struct tomoyo_io_buffer".
@@ -1941,27 +2078,31 @@ int tomoyo_write_control(struct tomoyo_io_buffer *head,
const char __user *buffer, const int buffer_len)
{
int error = buffer_len;
- int avail_len = buffer_len;
+ size_t avail_len = buffer_len;
char *cp0 = head->write_buf;
-
if (!head->write)
return -ENOSYS;
if (!access_ok(VERIFY_READ, buffer, buffer_len))
return -EFAULT;
- /* Don't allow updating policies by non manager programs. */
- if (head->write != tomoyo_write_pid &&
- head->write != tomoyo_write_domain &&
- head->write != tomoyo_write_exception && !tomoyo_manager())
- return -EPERM;
if (mutex_lock_interruptible(&head->io_sem))
return -EINTR;
/* Read a line and dispatch it to the policy handler. */
while (avail_len > 0) {
char c;
if (head->w.avail >= head->writebuf_size - 1) {
- error = -ENOMEM;
- break;
- } else if (get_user(c, buffer)) {
+ const int len = head->writebuf_size * 2;
+ char *cp = kzalloc(len, GFP_NOFS);
+ if (!cp) {
+ error = -ENOMEM;
+ break;
+ }
+ memmove(cp, cp0, head->w.avail);
+ kfree(cp0);
+ head->write_buf = cp;
+ cp0 = cp;
+ head->writebuf_size = len;
+ }
+ if (get_user(c, buffer)) {
error = -EFAULT;
break;
}
@@ -1973,8 +2114,40 @@ int tomoyo_write_control(struct tomoyo_io_buffer *head,
cp0[head->w.avail - 1] = '\0';
head->w.avail = 0;
tomoyo_normalize_line(cp0);
- head->write(head);
+ if (!strcmp(cp0, "reset")) {
+ head->w.ns = &tomoyo_kernel_namespace;
+ head->w.domain = NULL;
+ memset(&head->r, 0, sizeof(head->r));
+ continue;
+ }
+ /* Don't allow updating policies by non manager programs. */
+ switch (head->type) {
+ case TOMOYO_PROCESS_STATUS:
+ /* This does not write anything. */
+ break;
+ case TOMOYO_DOMAINPOLICY:
+ if (tomoyo_select_domain(head, cp0))
+ continue;
+ /* fall through */
+ case TOMOYO_EXCEPTIONPOLICY:
+ if (!strcmp(cp0, "select transition_only")) {
+ head->r.print_transition_related_only = true;
+ continue;
+ }
+ /* fall through */
+ default:
+ if (!tomoyo_manager()) {
+ error = -EPERM;
+ goto out;
+ }
+ }
+ switch (tomoyo_parse_policy(head, cp0)) {
+ case -EPERM:
+ error = -EPERM;
+ goto out;
+ }
}
+out:
mutex_unlock(&head->io_sem);
return error;
}
@@ -2019,27 +2192,27 @@ void tomoyo_check_profile(void)
struct tomoyo_domain_info *domain;
const int idx = tomoyo_read_lock();
tomoyo_policy_loaded = true;
- /* Check all profiles currently assigned to domains are defined. */
+ printk(KERN_INFO "TOMOYO: 2.4.0\n");
list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) {
const u8 profile = domain->profile;
- if (tomoyo_profile_ptr[profile])
+ const struct tomoyo_policy_namespace *ns = domain->ns;
+ if (ns->profile_version != 20100903)
+ printk(KERN_ERR
+ "Profile version %u is not supported.\n",
+ ns->profile_version);
+ else if (!ns->profile_ptr[profile])
+ printk(KERN_ERR
+ "Profile %u (used by '%s') is not defined.\n",
+ profile, domain->domainname->name);
+ else
continue;
- printk(KERN_ERR "You need to define profile %u before using it.\n",
- profile);
- printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.3/ "
+ printk(KERN_ERR
+ "Userland tools for TOMOYO 2.4 must be installed and "
+ "policy must be initialized.\n");
+ printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.4/ "
"for more information.\n");
- panic("Profile %u (used by '%s') not defined.\n",
- profile, domain->domainname->name);
+ panic("STOP!");
}
tomoyo_read_unlock(idx);
- if (tomoyo_profile_version != 20090903) {
- printk(KERN_ERR "You need to install userland programs for "
- "TOMOYO 2.3 and initialize policy configuration.\n");
- printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.3/ "
- "for more information.\n");
- panic("Profile version %u is not supported.\n",
- tomoyo_profile_version);
- }
- printk(KERN_INFO "TOMOYO: 2.3.0\n");
printk(KERN_INFO "Mandatory Access Control activated.\n");
}
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index 4bc3975516cb..53c8798e38b7 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -74,10 +74,6 @@ enum tomoyo_group_id {
TOMOYO_MAX_GROUP
};
-/* A domain definition starts with <kernel>. */
-#define TOMOYO_ROOT_NAME "<kernel>"
-#define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1)
-
/* Index numbers for type of numeric values. */
enum tomoyo_value_type {
TOMOYO_VALUE_TYPE_INVALID,
@@ -89,6 +85,8 @@ enum tomoyo_value_type {
/* Index numbers for domain transition control keywords. */
enum tomoyo_transition_type {
/* Do not change this order, */
+ TOMOYO_TRANSITION_CONTROL_NO_RESET,
+ TOMOYO_TRANSITION_CONTROL_RESET,
TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE,
TOMOYO_TRANSITION_CONTROL_INITIALIZE,
TOMOYO_TRANSITION_CONTROL_NO_KEEP,
@@ -246,6 +244,8 @@ struct tomoyo_shared_acl_head {
atomic_t users;
} __packed;
+struct tomoyo_policy_namespace;
+
/* Structure for request info. */
struct tomoyo_request_info {
struct tomoyo_domain_info *domain;
@@ -359,6 +359,8 @@ struct tomoyo_domain_info {
struct list_head acl_info_list;
/* Name of this domain. Never NULL. */
const struct tomoyo_path_info *domainname;
+ /* Namespace for this domain. Never NULL. */
+ struct tomoyo_policy_namespace *ns;
u8 profile; /* Profile number to use. */
u8 group; /* Group number to use. */
bool is_deleted; /* Delete flag. */
@@ -423,6 +425,7 @@ struct tomoyo_mount_acl {
struct tomoyo_acl_param {
char *data;
struct list_head *list;
+ struct tomoyo_policy_namespace *ns;
bool is_delete;
};
@@ -443,6 +446,7 @@ struct tomoyo_io_buffer {
char __user *read_user_buf;
int read_user_buf_avail;
struct {
+ struct list_head *ns;
struct list_head *domain;
struct list_head *group;
struct list_head *acl;
@@ -455,14 +459,16 @@ struct tomoyo_io_buffer {
u8 w_pos;
bool eof;
bool print_this_domain_only;
- bool print_execute_only;
+ bool print_transition_related_only;
const char *w[TOMOYO_MAX_IO_READ_QUEUE];
} r;
struct {
+ struct tomoyo_policy_namespace *ns;
/* The position currently writing to. */
struct tomoyo_domain_info *domain;
/* Bytes available for writing. */
int avail;
+ bool is_delete;
} w;
/* Buffer for reading. */
char *read_buf;
@@ -533,8 +539,27 @@ struct tomoyo_time {
u8 sec;
};
+/* Structure for policy namespace. */
+struct tomoyo_policy_namespace {
+ /* Profile table. Memory is allocated as needed. */
+ struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES];
+ /* List of "struct tomoyo_group". */
+ struct list_head group_list[TOMOYO_MAX_GROUP];
+ /* List of policy. */
+ struct list_head policy_list[TOMOYO_MAX_POLICY];
+ /* The global ACL referred by "use_group" keyword. */
+ struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS];
+ /* List for connecting to tomoyo_namespace_list list. */
+ struct list_head namespace_list;
+ /* Profile version. Currently only 20100903 is defined. */
+ unsigned int profile_version;
+ /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
+ const char *name;
+};
+
/********** Function prototypes. **********/
+void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns);
bool tomoyo_str_starts(char **src, const char *find);
const char *tomoyo_get_exe(void);
void tomoyo_normalize_line(unsigned char *buffer);
@@ -553,7 +578,8 @@ tomoyo_compare_name_union(const struct tomoyo_path_info *name,
const struct tomoyo_name_union *ptr);
bool tomoyo_compare_number_union(const unsigned long value,
const struct tomoyo_number_union *ptr);
-int tomoyo_get_mode(const u8 profile, const u8 index);
+int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
+ const u8 index);
void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...)
__attribute__ ((format(printf, 2, 3)));
bool tomoyo_correct_domain(const unsigned char *domainname);
@@ -589,8 +615,11 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
__attribute__ ((format(printf, 2, 3)));
struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
- const u8 profile);
-struct tomoyo_profile *tomoyo_profile(const u8 profile);
+ const bool transit);
+struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
+ const u8 profile);
+struct tomoyo_policy_namespace *tomoyo_assign_namespace
+(const char *domainname);
struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
const u8 idx);
unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
@@ -646,6 +675,8 @@ char *tomoyo_read_token(struct tomoyo_acl_param *param);
bool tomoyo_permstr(const char *string, const char *keyword);
const char *tomoyo_yesno(const unsigned int value);
+void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
+ __attribute__ ((format(printf, 2, 3)));
void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
va_list args);
void tomoyo_read_log(struct tomoyo_io_buffer *head);
@@ -661,8 +692,6 @@ extern struct srcu_struct tomoyo_ss;
/* The list for "struct tomoyo_domain_info". */
extern struct list_head tomoyo_domain_list;
-extern struct list_head tomoyo_policy_list[TOMOYO_MAX_POLICY];
-extern struct list_head tomoyo_group_list[TOMOYO_MAX_GROUP];
extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
/* Lock for protecting policy. */
@@ -671,10 +700,10 @@ extern struct mutex tomoyo_policy_lock;
/* Has /sbin/init started? */
extern bool tomoyo_policy_loaded;
-extern struct list_head tomoyo_acl_group[TOMOYO_MAX_ACL_GROUPS];
-
/* The kernel's domain. */
extern struct tomoyo_domain_info tomoyo_kernel_domain;
+extern struct tomoyo_policy_namespace tomoyo_kernel_namespace;
+extern struct list_head tomoyo_namespace_list;
extern const char *tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
extern const char *tomoyo_mkdev_keyword[TOMOYO_MAX_MKDEV_OPERATION];
@@ -809,6 +838,16 @@ static inline bool tomoyo_same_number_union
a->value_type[1] == b->value_type[1];
}
+/**
+ * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
+ *
+ * Returns pointer to "struct tomoyo_policy_namespace" for current thread.
+ */
+static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void)
+{
+ return tomoyo_domain()->ns;
+}
+
#if defined(CONFIG_SLOB)
/**
diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c
index af5f325e2f33..71acebc747c3 100644
--- a/security/tomoyo/domain.c
+++ b/security/tomoyo/domain.c
@@ -12,9 +12,6 @@
/* Variables definitions.*/
-/* The global ACL referred by "use_group" keyword. */
-struct list_head tomoyo_acl_group[TOMOYO_MAX_ACL_GROUPS];
-
/* The initial domain. */
struct tomoyo_domain_info tomoyo_kernel_domain;
@@ -158,7 +155,7 @@ retry:
}
if (!retried) {
retried = true;
- list = &tomoyo_acl_group[domain->group];
+ list = &domain->ns->acl_group[domain->group];
goto retry;
}
r->granted = false;
@@ -167,13 +164,10 @@ retry:
/* The list for "struct tomoyo_domain_info". */
LIST_HEAD(tomoyo_domain_list);
-struct list_head tomoyo_policy_list[TOMOYO_MAX_POLICY];
-struct list_head tomoyo_group_list[TOMOYO_MAX_GROUP];
-
/**
* tomoyo_last_word - Get last component of a domainname.
*
- * @domainname: Domainname to check.
+ * @name: Domainname to check.
*
* Returns the last word of @domainname.
*/
@@ -247,7 +241,7 @@ int tomoyo_write_transition_control(struct tomoyo_acl_param *param,
if (!e.domainname)
goto out;
}
- param->list = &tomoyo_policy_list[TOMOYO_ID_TRANSITION_CONTROL];
+ param->list = &param->ns->policy_list[TOMOYO_ID_TRANSITION_CONTROL];
error = tomoyo_update_policy(&e.head, sizeof(e), param,
tomoyo_same_transition_control);
out:
@@ -257,59 +251,88 @@ out:
}
/**
- * tomoyo_transition_type - Get domain transition type.
+ * tomoyo_scan_transition - Try to find specific domain transition type.
*
- * @domainname: The name of domain.
- * @program: The name of program.
+ * @list: Pointer to "struct list_head".
+ * @domainname: The name of current domain.
+ * @program: The name of requested program.
+ * @last_name: The last component of @domainname.
+ * @type: One of values in "enum tomoyo_transition_type".
*
- * Returns TOMOYO_TRANSITION_CONTROL_INITIALIZE if executing @program
- * reinitializes domain transition, TOMOYO_TRANSITION_CONTROL_KEEP if executing
- * @program suppresses domain transition, others otherwise.
+ * Returns true if found one, false otherwise.
*
* Caller holds tomoyo_read_lock().
*/
-static u8 tomoyo_transition_type(const struct tomoyo_path_info *domainname,
- const struct tomoyo_path_info *program)
+static inline bool tomoyo_scan_transition
+(const struct list_head *list, const struct tomoyo_path_info *domainname,
+ const struct tomoyo_path_info *program, const char *last_name,
+ const enum tomoyo_transition_type type)
{
const struct tomoyo_transition_control *ptr;
- const char *last_name = tomoyo_last_word(domainname->name);
- u8 type;
- for (type = 0; type < TOMOYO_MAX_TRANSITION_TYPE; type++) {
- next:
- list_for_each_entry_rcu(ptr, &tomoyo_policy_list
- [TOMOYO_ID_TRANSITION_CONTROL],
- head.list) {
- if (ptr->head.is_deleted || ptr->type != type)
- continue;
- if (ptr->domainname) {
- if (!ptr->is_last_name) {
- if (ptr->domainname != domainname)
- continue;
- } else {
- /*
- * Use direct strcmp() since this is
- * unlikely used.
- */
- if (strcmp(ptr->domainname->name,
- last_name))
- continue;
- }
- }
- if (ptr->program &&
- tomoyo_pathcmp(ptr->program, program))
- continue;
- if (type == TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE) {
+ list_for_each_entry_rcu(ptr, list, head.list) {
+ if (ptr->head.is_deleted || ptr->type != type)
+ continue;
+ if (ptr->domainname) {
+ if (!ptr->is_last_name) {
+ if (ptr->domainname != domainname)
+ continue;
+ } else {
/*
- * Do not check for initialize_domain if
- * no_initialize_domain matched.
+ * Use direct strcmp() since this is
+ * unlikely used.
*/
- type = TOMOYO_TRANSITION_CONTROL_NO_KEEP;
- goto next;
+ if (strcmp(ptr->domainname->name, last_name))
+ continue;
}
- goto done;
}
+ if (ptr->program && tomoyo_pathcmp(ptr->program, program))
+ continue;
+ return true;
+ }
+ return false;
+}
+
+/**
+ * tomoyo_transition_type - Get domain transition type.
+ *
+ * @ns: Pointer to "struct tomoyo_policy_namespace".
+ * @domainname: The name of current domain.
+ * @program: The name of requested program.
+ *
+ * Returns TOMOYO_TRANSITION_CONTROL_TRANSIT if executing @program causes
+ * domain transition across namespaces, TOMOYO_TRANSITION_CONTROL_INITIALIZE if
+ * executing @program reinitializes domain transition within that namespace,
+ * TOMOYO_TRANSITION_CONTROL_KEEP if executing @program stays at @domainname ,
+ * others otherwise.
+ *
+ * Caller holds tomoyo_read_lock().
+ */
+static enum tomoyo_transition_type tomoyo_transition_type
+(const struct tomoyo_policy_namespace *ns,
+ const struct tomoyo_path_info *domainname,
+ const struct tomoyo_path_info *program)
+{
+ const char *last_name = tomoyo_last_word(domainname->name);
+ enum tomoyo_transition_type type = TOMOYO_TRANSITION_CONTROL_NO_RESET;
+ while (type < TOMOYO_MAX_TRANSITION_TYPE) {
+ const struct list_head * const list =
+ &ns->policy_list[TOMOYO_ID_TRANSITION_CONTROL];
+ if (!tomoyo_scan_transition(list, domainname, program,
+ last_name, type)) {
+ type++;
+ continue;
+ }
+ if (type != TOMOYO_TRANSITION_CONTROL_NO_RESET &&
+ type != TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE)
+ break;
+ /*
+ * Do not check for reset_domain if no_reset_domain matched.
+ * Do not check for initialize_domain if no_initialize_domain
+ * matched.
+ */
+ type++;
+ type++;
}
- done:
return type;
}
@@ -355,7 +378,7 @@ int tomoyo_write_aggregator(struct tomoyo_acl_param *param)
if (!e.original_name || !e.aggregated_name ||
e.aggregated_name->is_patterned) /* No patterns allowed. */
goto out;
- param->list = &tomoyo_policy_list[TOMOYO_ID_AGGREGATOR];
+ param->list = &param->ns->policy_list[TOMOYO_ID_AGGREGATOR];
error = tomoyo_update_policy(&e.head, sizeof(e), param,
tomoyo_same_aggregator);
out:
@@ -365,53 +388,171 @@ out:
}
/**
- * tomoyo_assign_domain - Create a domain.
+ * tomoyo_find_namespace - Find specified namespace.
*
- * @domainname: The name of domain.
- * @profile: Profile number to assign if the domain was newly created.
+ * @name: Name of namespace to find.
+ * @len: Length of @name.
*
- * Returns pointer to "struct tomoyo_domain_info" on success, NULL otherwise.
+ * Returns pointer to "struct tomoyo_policy_namespace" if found,
+ * NULL otherwise.
*
* Caller holds tomoyo_read_lock().
*/
-struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
- const u8 profile)
+static struct tomoyo_policy_namespace *tomoyo_find_namespace
+(const char *name, const unsigned int len)
{
- struct tomoyo_domain_info *entry;
- struct tomoyo_domain_info *domain = NULL;
- const struct tomoyo_path_info *saved_domainname;
- bool found = false;
+ struct tomoyo_policy_namespace *ns;
+ list_for_each_entry(ns, &tomoyo_namespace_list, namespace_list) {
+ if (strncmp(name, ns->name, len) ||
+ (name[len] && name[len] != ' '))
+ continue;
+ return ns;
+ }
+ return NULL;
+}
- if (!tomoyo_correct_domain(domainname))
+/**
+ * tomoyo_assign_namespace - Create a new namespace.
+ *
+ * @domainname: Name of namespace to create.
+ *
+ * Returns pointer to "struct tomoyo_policy_namespace" on success,
+ * NULL otherwise.
+ *
+ * Caller holds tomoyo_read_lock().
+ */
+struct tomoyo_policy_namespace *tomoyo_assign_namespace(const char *domainname)
+{
+ struct tomoyo_policy_namespace *ptr;
+ struct tomoyo_policy_namespace *entry;
+ const char *cp = domainname;
+ unsigned int len = 0;
+ while (*cp && *cp++ != ' ')
+ len++;
+ ptr = tomoyo_find_namespace(domainname, len);
+ if (ptr)
+ return ptr;
+ if (len >= TOMOYO_EXEC_TMPSIZE - 10 || !tomoyo_domain_def(domainname))
return NULL;
- saved_domainname = tomoyo_get_name(domainname);
- if (!saved_domainname)
+ entry = kzalloc(sizeof(*entry) + len + 1, GFP_NOFS);
+ if (!entry)
return NULL;
- entry = kzalloc(sizeof(*entry), GFP_NOFS);
if (mutex_lock_interruptible(&tomoyo_policy_lock))
goto out;
- list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) {
- if (domain->is_deleted ||
- tomoyo_pathcmp(saved_domainname, domain->domainname))
- continue;
- found = true;
- break;
- }
- if (!found && tomoyo_memory_ok(entry)) {
- INIT_LIST_HEAD(&entry->acl_info_list);
- entry->domainname = saved_domainname;
- saved_domainname = NULL;
- entry->profile = profile;
- list_add_tail_rcu(&entry->list, &tomoyo_domain_list);
- domain = entry;
+ ptr = tomoyo_find_namespace(domainname, len);
+ if (!ptr && tomoyo_memory_ok(entry)) {
+ char *name = (char *) (entry + 1);
+ ptr = entry;
+ memmove(name, domainname, len);
+ name[len] = '\0';
+ entry->name = name;
+ tomoyo_init_policy_namespace(entry);
entry = NULL;
- found = true;
}
mutex_unlock(&tomoyo_policy_lock);
- out:
- tomoyo_put_name(saved_domainname);
+out:
kfree(entry);
- return found ? domain : NULL;
+ return ptr;
+}
+
+/**
+ * tomoyo_namespace_jump - Check for namespace jump.
+ *
+ * @domainname: Name of domain.
+ *
+ * Returns true if namespace differs, false otherwise.
+ */
+static bool tomoyo_namespace_jump(const char *domainname)
+{
+ const char *namespace = tomoyo_current_namespace()->name;
+ const int len = strlen(namespace);
+ return strncmp(domainname, namespace, len) ||
+ (domainname[len] && domainname[len] != ' ');
+}
+
+/**
+ * tomoyo_assign_domain - Create a domain or a namespace.
+ *
+ * @domainname: The name of domain.
+ * @transit: True if transit to domain found or created.
+ *
+ * Returns pointer to "struct tomoyo_domain_info" on success, NULL otherwise.
+ *
+ * Caller holds tomoyo_read_lock().
+ */
+struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
+ const bool transit)
+{
+ struct tomoyo_domain_info e = { };
+ struct tomoyo_domain_info *entry = tomoyo_find_domain(domainname);
+ bool created = false;
+ if (entry) {
+ if (transit) {
+ /*
+ * Since namespace is created at runtime, profiles may
+ * not be created by the moment the process transits to
+ * that domain. Do not perform domain transition if
+ * profile for that domain is not yet created.
+ */
+ if (!entry->ns->profile_ptr[entry->profile])
+ return NULL;
+ }
+ return entry;
+ }
+ /* Requested domain does not exist. */
+ /* Don't create requested domain if domainname is invalid. */
+ if (strlen(domainname) >= TOMOYO_EXEC_TMPSIZE - 10 ||
+ !tomoyo_correct_domain(domainname))
+ return NULL;
+ /*
+ * Since definition of profiles and acl_groups may differ across
+ * namespaces, do not inherit "use_profile" and "use_group" settings
+ * by automatically creating requested domain upon domain transition.
+ */
+ if (transit && tomoyo_namespace_jump(domainname))
+ return NULL;
+ e.ns = tomoyo_assign_namespace(domainname);
+ if (!e.ns)
+ return NULL;
+ /*
+ * "use_profile" and "use_group" settings for automatically created
+ * domains are inherited from current domain. These are 0 for manually
+ * created domains.
+ */
+ if (transit) {
+ const struct tomoyo_domain_info *domain = tomoyo_domain();
+ e.profile = domain->profile;
+ e.group = domain->group;
+ }
+ e.domainname = tomoyo_get_name(domainname);
+ if (!e.domainname)
+ return NULL;
+ if (mutex_lock_interruptible(&tomoyo_policy_lock))
+ goto out;
+ entry = tomoyo_find_domain(domainname);
+ if (!entry) {
+ entry = tomoyo_commit_ok(&e, sizeof(e));
+ if (entry) {
+ INIT_LIST_HEAD(&entry->acl_info_list);
+ list_add_tail_rcu(&entry->list, &tomoyo_domain_list);
+ created = true;
+ }
+ }
+ mutex_unlock(&tomoyo_policy_lock);
+out:
+ tomoyo_put_name(e.domainname);
+ if (entry && transit) {
+ if (created) {
+ struct tomoyo_request_info r;
+ tomoyo_init_request_info(&r, entry,
+ TOMOYO_MAC_FILE_EXECUTE);
+ r.granted = false;
+ tomoyo_write_log(&r, "use_profile %u\n",
+ entry->profile);
+ tomoyo_write_log(&r, "use_group %u\n", entry->group);
+ }
+ }
+ return entry;
}
/**
@@ -434,6 +575,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
bool is_enforce;
int retval = -ENOMEM;
bool need_kfree = false;
+ bool reject_on_transition_failure = false;
struct tomoyo_path_info rn = { }; /* real name */
mode = tomoyo_init_request_info(&r, NULL, TOMOYO_MAC_FILE_EXECUTE);
@@ -457,8 +599,10 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
/* Check 'aggregator' directive. */
{
struct tomoyo_aggregator *ptr;
- list_for_each_entry_rcu(ptr, &tomoyo_policy_list
- [TOMOYO_ID_AGGREGATOR], head.list) {
+ struct list_head *list =
+ &old_domain->ns->policy_list[TOMOYO_ID_AGGREGATOR];
+ /* Check 'aggregator' directive. */
+ list_for_each_entry_rcu(ptr, list, head.list) {
if (ptr->head.is_deleted ||
!tomoyo_path_matches_pattern(&rn,
ptr->original_name))
@@ -492,11 +636,21 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
}
/* Calculate domain to transit to. */
- switch (tomoyo_transition_type(old_domain->domainname, &rn)) {
+ switch (tomoyo_transition_type(old_domain->ns, old_domain->domainname,
+ &rn)) {
+ case TOMOYO_TRANSITION_CONTROL_RESET:
+ /* Transit to the root of specified namespace. */
+ snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1, "<%s>", rn.name);
+ /*
+ * Make do_execve() fail if domain transition across namespaces
+ * has failed.
+ */
+ reject_on_transition_failure = true;
+ break;
case TOMOYO_TRANSITION_CONTROL_INITIALIZE:
- /* Transit to the child of tomoyo_kernel_domain domain. */
- snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1, TOMOYO_ROOT_NAME " "
- "%s", rn.name);
+ /* Transit to the child of current namespace's root. */
+ snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1, "%s %s",
+ old_domain->ns->name, rn.name);
break;
case TOMOYO_TRANSITION_CONTROL_KEEP:
/* Keep current domain. */
@@ -519,19 +673,25 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
}
break;
}
- if (domain || strlen(tmp) >= TOMOYO_EXEC_TMPSIZE - 10)
- goto done;
- domain = tomoyo_find_domain(tmp);
if (!domain)
- domain = tomoyo_assign_domain(tmp, old_domain->profile);
- done:
+ domain = tomoyo_assign_domain(tmp, true);
if (domain)
- goto out;
- printk(KERN_WARNING "TOMOYO-ERROR: Domain '%s' not defined.\n", tmp);
- if (is_enforce)
- retval = -EPERM;
- else
- old_domain->transition_failed = true;
+ retval = 0;
+ else if (reject_on_transition_failure) {
+ printk(KERN_WARNING "ERROR: Domain '%s' not ready.\n", tmp);
+ retval = -ENOMEM;
+ } else if (r.mode == TOMOYO_CONFIG_ENFORCING)
+ retval = -ENOMEM;
+ else {
+ retval = 0;
+ if (!old_domain->transition_failed) {
+ old_domain->transition_failed = true;
+ r.granted = false;
+ tomoyo_write_log(&r, "%s", "transition_failed\n");
+ printk(KERN_WARNING
+ "ERROR: Domain '%s' not defined.\n", tmp);
+ }
+ }
out:
if (!domain)
domain = old_domain;
diff --git a/security/tomoyo/file.c b/security/tomoyo/file.c
index 4f8526af9069..323ddc73a125 100644
--- a/security/tomoyo/file.c
+++ b/security/tomoyo/file.c
@@ -603,7 +603,7 @@ int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
int error;
r->type = tomoyo_p2mac[operation];
- r->mode = tomoyo_get_mode(r->profile, r->type);
+ r->mode = tomoyo_get_mode(r->domain->ns, r->profile, r->type);
if (r->mode == TOMOYO_CONFIG_DISABLED)
return 0;
r->param_type = TOMOYO_TYPE_PATH_ACL;
diff --git a/security/tomoyo/gc.c b/security/tomoyo/gc.c
index 412ee8309c23..782e844dca7f 100644
--- a/security/tomoyo/gc.c
+++ b/security/tomoyo/gc.c
@@ -292,15 +292,12 @@ static bool tomoyo_collect_acl(struct list_head *list)
static void tomoyo_collect_entry(void)
{
int i;
+ enum tomoyo_policy_id id;
+ struct tomoyo_policy_namespace *ns;
+ int idx;
if (mutex_lock_interruptible(&tomoyo_policy_lock))
return;
- for (i = 0; i < TOMOYO_MAX_POLICY; i++) {
- if (!tomoyo_collect_member(i, &tomoyo_policy_list[i]))
- goto unlock;
- }
- for (i = 0; i < TOMOYO_MAX_ACL_GROUPS; i++)
- if (!tomoyo_collect_acl(&tomoyo_acl_group[i]))
- goto unlock;
+ idx = tomoyo_read_lock();
{
struct tomoyo_domain_info *domain;
list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) {
@@ -317,39 +314,49 @@ static void tomoyo_collect_entry(void)
goto unlock;
}
}
- for (i = 0; i < TOMOYO_MAX_HASH; i++) {
- struct tomoyo_name *ptr;
- list_for_each_entry_rcu(ptr, &tomoyo_name_list[i], head.list) {
- if (atomic_read(&ptr->head.users))
- continue;
- if (!tomoyo_add_to_gc(TOMOYO_ID_NAME, &ptr->head.list))
+ list_for_each_entry_rcu(ns, &tomoyo_namespace_list, namespace_list) {
+ for (id = 0; id < TOMOYO_MAX_POLICY; id++)
+ if (!tomoyo_collect_member(id, &ns->policy_list[id]))
goto unlock;
+ for (i = 0; i < TOMOYO_MAX_ACL_GROUPS; i++)
+ if (!tomoyo_collect_acl(&ns->acl_group[i]))
+ goto unlock;
+ for (i = 0; i < TOMOYO_MAX_GROUP; i++) {
+ struct list_head *list = &ns->group_list[i];
+ struct tomoyo_group *group;
+ switch (i) {
+ case 0:
+ id = TOMOYO_ID_PATH_GROUP;
+ break;
+ default:
+ id = TOMOYO_ID_NUMBER_GROUP;
+ break;
+ }
+ list_for_each_entry(group, list, head.list) {
+ if (!tomoyo_collect_member
+ (id, &group->member_list))
+ goto unlock;
+ if (!list_empty(&group->member_list) ||
+ atomic_read(&group->head.users))
+ continue;
+ if (!tomoyo_add_to_gc(TOMOYO_ID_GROUP,
+ &group->head.list))
+ goto unlock;
+ }
}
}
- for (i = 0; i < TOMOYO_MAX_GROUP; i++) {
- struct list_head *list = &tomoyo_group_list[i];
- int id;
- struct tomoyo_group *group;
- switch (i) {
- case 0:
- id = TOMOYO_ID_PATH_GROUP;
- break;
- default:
- id = TOMOYO_ID_NUMBER_GROUP;
- break;
- }
- list_for_each_entry(group, list, head.list) {
- if (!tomoyo_collect_member(id, &group->member_list))
- goto unlock;
- if (!list_empty(&group->member_list) ||
- atomic_read(&group->head.users))
+ for (i = 0; i < TOMOYO_MAX_HASH; i++) {
+ struct list_head *list = &tomoyo_name_list[i];
+ struct tomoyo_shared_acl_head *ptr;
+ list_for_each_entry(ptr, list, list) {
+ if (atomic_read(&ptr->users))
continue;
- if (!tomoyo_add_to_gc(TOMOYO_ID_GROUP,
- &group->head.list))
+ if (!tomoyo_add_to_gc(TOMOYO_ID_NAME, &ptr->list))
goto unlock;
}
}
- unlock:
+unlock:
+ tomoyo_read_unlock(idx);
mutex_unlock(&tomoyo_policy_lock);
}
diff --git a/security/tomoyo/memory.c b/security/tomoyo/memory.c
index 7a0493943d6d..39d012823f84 100644
--- a/security/tomoyo/memory.c
+++ b/security/tomoyo/memory.c
@@ -118,7 +118,7 @@ struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
return NULL;
if (mutex_lock_interruptible(&tomoyo_policy_lock))
goto out;
- list = &tomoyo_group_list[idx];
+ list = &param->ns->group_list[idx];
list_for_each_entry(group, list, head.list) {
if (e.group_name != group->group_name)
continue;
@@ -199,27 +199,23 @@ const struct tomoyo_path_info *tomoyo_get_name(const char *name)
return ptr ? &ptr->entry : NULL;
}
+/* Initial namespace.*/
+struct tomoyo_policy_namespace tomoyo_kernel_namespace;
+
/**
* tomoyo_mm_init - Initialize mm related code.
*/
void __init tomoyo_mm_init(void)
{
int idx;
-
- for (idx = 0; idx < TOMOYO_MAX_POLICY; idx++)
- INIT_LIST_HEAD(&tomoyo_policy_list[idx]);
- for (idx = 0; idx < TOMOYO_MAX_GROUP; idx++)
- INIT_LIST_HEAD(&tomoyo_group_list[idx]);
for (idx = 0; idx < TOMOYO_MAX_HASH; idx++)
INIT_LIST_HEAD(&tomoyo_name_list[idx]);
+ tomoyo_kernel_namespace.name = "<kernel>";
+ tomoyo_init_policy_namespace(&tomoyo_kernel_namespace);
+ tomoyo_kernel_domain.ns = &tomoyo_kernel_namespace;
INIT_LIST_HEAD(&tomoyo_kernel_domain.acl_info_list);
- for (idx = 0; idx < TOMOYO_MAX_ACL_GROUPS; idx++)
- INIT_LIST_HEAD(&tomoyo_acl_group[idx]);
- tomoyo_kernel_domain.domainname = tomoyo_get_name(TOMOYO_ROOT_NAME);
+ tomoyo_kernel_domain.domainname = tomoyo_get_name("<kernel>");
list_add_tail_rcu(&tomoyo_kernel_domain.list, &tomoyo_domain_list);
- idx = tomoyo_read_lock();
- if (tomoyo_find_domain(TOMOYO_ROOT_NAME) != &tomoyo_kernel_domain)
- panic("Can't register tomoyo_kernel_domain");
#if 0
/* Will be replaced with tomoyo_load_builtin_policy(). */
{
@@ -230,7 +226,6 @@ void __init tomoyo_mm_init(void)
TOMOYO_TRANSITION_CONTROL_INITIALIZE);
}
#endif
- tomoyo_read_unlock(idx);
}
diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c
index bc71528ff440..fda15c1fc1c0 100644
--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -416,26 +416,21 @@ bool tomoyo_correct_path(const char *filename)
*/
bool tomoyo_correct_domain(const unsigned char *domainname)
{
- if (!domainname || strncmp(domainname, TOMOYO_ROOT_NAME,
- TOMOYO_ROOT_NAME_LEN))
- goto out;
- domainname += TOMOYO_ROOT_NAME_LEN;
- if (!*domainname)
+ if (!domainname || !tomoyo_domain_def(domainname))
+ return false;
+ domainname = strchr(domainname, ' ');
+ if (!domainname++)
return true;
- if (*domainname++ != ' ')
- goto out;
while (1) {
const unsigned char *cp = strchr(domainname, ' ');
if (!cp)
break;
if (*domainname != '/' ||
!tomoyo_correct_word2(domainname, cp - domainname))
- goto out;
+ return false;
domainname = cp + 1;
}
return tomoyo_correct_path(domainname);
- out:
- return false;
}
/**
@@ -447,7 +442,19 @@ bool tomoyo_correct_domain(const unsigned char *domainname)
*/
bool tomoyo_domain_def(const unsigned char *buffer)
{
- return !strncmp(buffer, TOMOYO_ROOT_NAME, TOMOYO_ROOT_NAME_LEN);
+ const unsigned char *cp;
+ int len;
+ if (*buffer != '<')
+ return false;
+ cp = strchr(buffer, ' ');
+ if (!cp)
+ len = strlen(buffer);
+ else
+ len = cp - buffer;
+ if (buffer[len - 1] != '>' ||
+ !tomoyo_correct_word2(buffer + 1, len - 2))
+ return false;
+ return true;
}
/**
@@ -833,22 +840,24 @@ const char *tomoyo_get_exe(void)
/**
* tomoyo_get_mode - Get MAC mode.
*
+ * @ns: Pointer to "struct tomoyo_policy_namespace".
* @profile: Profile number.
* @index: Index number of functionality.
*
* Returns mode.
*/
-int tomoyo_get_mode(const u8 profile, const u8 index)
+int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
+ const u8 index)
{
u8 mode;
const u8 category = TOMOYO_MAC_CATEGORY_FILE;
if (!tomoyo_policy_loaded)
return TOMOYO_CONFIG_DISABLED;
- mode = tomoyo_profile(profile)->config[index];
+ mode = tomoyo_profile(ns, profile)->config[index];
if (mode == TOMOYO_CONFIG_USE_DEFAULT)
- mode = tomoyo_profile(profile)->config[category];
+ mode = tomoyo_profile(ns, profile)->config[category];
if (mode == TOMOYO_CONFIG_USE_DEFAULT)
- mode = tomoyo_profile(profile)->default_config;
+ mode = tomoyo_profile(ns, profile)->default_config;
return mode & 3;
}
@@ -872,26 +881,11 @@ int tomoyo_init_request_info(struct tomoyo_request_info *r,
profile = domain->profile;
r->profile = profile;
r->type = index;
- r->mode = tomoyo_get_mode(profile, index);
+ r->mode = tomoyo_get_mode(domain->ns, profile, index);
return r->mode;
}
/**
- * tomoyo_last_word - Get last component of a line.
- *
- * @line: A line.
- *
- * Returns the last word of a line.
- */
-const char *tomoyo_last_word(const char *name)
-{
- const char *cp = strrchr(name, ' ');
- if (cp)
- return cp + 1;
- return name;
-}
-
-/**
* tomoyo_domain_quota_is_ok - Check for domain's quota.
*
* @r: Pointer to "struct tomoyo_request_info".
@@ -939,7 +933,7 @@ bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r)
if (perm & (1 << i))
count++;
}
- if (count < tomoyo_profile(domain->profile)->
+ if (count < tomoyo_profile(domain->ns, domain->profile)->
pref[TOMOYO_PREF_MAX_LEARNING_ENTRY])
return true;
if (!domain->quota_warned) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 02:43:03 +0000