Commit 4c3e9e2d authored by Tetsuo Handa's avatar Tetsuo Handa Committed by James Morris
Browse files

TOMOYO: Add numeric values grouping support.



This patch adds numeric values grouping support, which is useful for grouping
numeric values such as file's UID, DAC's mode, ioctl()'s cmd number.
Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: default avatarJames Morris <jmorris@namei.org>
parent babcd378
obj-y = common.o realpath.o tomoyo.o domain.o file.o gc.o path_group.o obj-y = common.o realpath.o tomoyo.o domain.o file.o gc.o path_group.o number_group.o
...@@ -118,6 +118,159 @@ static bool tomoyo_print_name_union(struct tomoyo_io_buffer *head, ...@@ -118,6 +118,159 @@ static bool tomoyo_print_name_union(struct tomoyo_io_buffer *head,
return tomoyo_io_printf(head, " %s", ptr->filename->name); return tomoyo_io_printf(head, " %s", ptr->filename->name);
} }
/**
* tomoyo_parse_ulong - Parse an "unsigned long" value.
*
* @result: Pointer to "unsigned long".
* @str: Pointer to string to parse.
*
* Returns value type on success, 0 otherwise.
*
* The @src is updated to point the first character after the value
* on success.
*/
u8 tomoyo_parse_ulong(unsigned long *result, char **str)
{
const char *cp = *str;
char *ep;
int base = 10;
if (*cp == '0') {
char c = *(cp + 1);
if (c == 'x' || c == 'X') {
base = 16;
cp += 2;
} else if (c >= '0' && c <= '7') {
base = 8;
cp++;
}
}
*result = simple_strtoul(cp, &ep, base);
if (cp == ep)
return 0;
*str = ep;
switch (base) {
case 16:
return TOMOYO_VALUE_TYPE_HEXADECIMAL;
case 8:
return TOMOYO_VALUE_TYPE_OCTAL;
default:
return TOMOYO_VALUE_TYPE_DECIMAL;
}
}
/**
* tomoyo_print_ulong - Print an "unsigned long" value.
*
* @buffer: Pointer to buffer.
* @buffer_len: Size of @buffer.
* @value: An "unsigned long" value.
* @type: Type of @value.
*
* Returns nothing.
*/
void tomoyo_print_ulong(char *buffer, const int buffer_len,
const unsigned long value, const u8 type)
{
if (type == TOMOYO_VALUE_TYPE_DECIMAL)
snprintf(buffer, buffer_len, "%lu", value);
else if (type == TOMOYO_VALUE_TYPE_OCTAL)
snprintf(buffer, buffer_len, "0%lo", value);
else if (type == TOMOYO_VALUE_TYPE_HEXADECIMAL)
snprintf(buffer, buffer_len, "0x%lX", value);
else
snprintf(buffer, buffer_len, "type(%u)", type);
}
/**
* tomoyo_print_number_union - Print a tomoyo_number_union.
*
* @head: Pointer to "struct tomoyo_io_buffer".
* @ptr: Pointer to "struct tomoyo_number_union".
*
* Returns true on success, false otherwise.
*/
bool tomoyo_print_number_union(struct tomoyo_io_buffer *head,
const struct tomoyo_number_union *ptr)
{
unsigned long min;
unsigned long max;
u8 min_type;
u8 max_type;
if (!tomoyo_io_printf(head, " "))
return false;
if (ptr->is_group)
return tomoyo_io_printf(head, "@%s",
ptr->group->group_name->name);
min_type = ptr->min_type;
max_type = ptr->max_type;
min = ptr->values[0];
max = ptr->values[1];
switch (min_type) {
case TOMOYO_VALUE_TYPE_HEXADECIMAL:
if (!tomoyo_io_printf(head, "0x%lX", min))
return false;
break;
case TOMOYO_VALUE_TYPE_OCTAL:
if (!tomoyo_io_printf(head, "0%lo", min))
return false;
break;
default:
if (!tomoyo_io_printf(head, "%lu", min))
return false;
break;
}
if (min == max && min_type == max_type)
return true;
switch (max_type) {
case TOMOYO_VALUE_TYPE_HEXADECIMAL:
return tomoyo_io_printf(head, "-0x%lX", max);
case TOMOYO_VALUE_TYPE_OCTAL:
return tomoyo_io_printf(head, "-0%lo", max);
default:
return tomoyo_io_printf(head, "-%lu", max);
}
}
/**
* tomoyo_parse_number_union - Parse a tomoyo_number_union.
*
* @data: Number or number range or number group.
* @ptr: Pointer to "struct tomoyo_number_union".
*
* Returns true on success, false otherwise.
*/
bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num)
{
u8 type;
unsigned long v;
memset(num, 0, sizeof(*num));
if (data[0] == '@') {
if (!tomoyo_is_correct_path(data, 0, 0, 0))
return false;
num->group = tomoyo_get_number_group(data + 1);
num->is_group = true;
return num->group != NULL;
}
type = tomoyo_parse_ulong(&v, &data);
if (!type)
return false;
num->values[0] = v;
num->min_type = type;
if (!*data) {
num->values[1] = v;
num->max_type = type;
return true;
}
if (*data++ != '-')
return false;
type = tomoyo_parse_ulong(&v, &data);
if (!type || *data)
return false;
num->values[1] = v;
num->max_type = type;
return true;
}
/** /**
* tomoyo_is_byte_range - Check whether the string isa \ooo style octal value. * tomoyo_is_byte_range - Check whether the string isa \ooo style octal value.
* *
...@@ -1750,6 +1903,8 @@ static int tomoyo_write_exception_policy(struct tomoyo_io_buffer *head) ...@@ -1750,6 +1903,8 @@ static int tomoyo_write_exception_policy(struct tomoyo_io_buffer *head)
return tomoyo_write_no_rewrite_policy(data, is_delete); return tomoyo_write_no_rewrite_policy(data, is_delete);
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_PATH_GROUP)) if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_PATH_GROUP))
return tomoyo_write_path_group_policy(data, is_delete); return tomoyo_write_path_group_policy(data, is_delete);
if (tomoyo_str_starts(&data, TOMOYO_KEYWORD_NUMBER_GROUP))
return tomoyo_write_number_group_policy(data, is_delete);
return -EINVAL; return -EINVAL;
} }
...@@ -1812,6 +1967,12 @@ static int tomoyo_read_exception_policy(struct tomoyo_io_buffer *head) ...@@ -1812,6 +1967,12 @@ static int tomoyo_read_exception_policy(struct tomoyo_io_buffer *head)
head->read_var2 = NULL; head->read_var2 = NULL;
head->read_step = 10; head->read_step = 10;
case 10: case 10:
if (!tomoyo_read_number_group_policy(head))
break;
head->read_var1 = NULL;
head->read_var2 = NULL;
head->read_step = 11;
case 11:
head->read_eof = true; head->read_eof = true;
break; break;
default: default:
......
...@@ -55,6 +55,7 @@ struct linux_binprm; ...@@ -55,6 +55,7 @@ struct linux_binprm;
#define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain " #define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain "
#define TOMOYO_KEYWORD_NO_KEEP_DOMAIN "no_keep_domain " #define TOMOYO_KEYWORD_NO_KEEP_DOMAIN "no_keep_domain "
#define TOMOYO_KEYWORD_PATH_GROUP "path_group " #define TOMOYO_KEYWORD_PATH_GROUP "path_group "
#define TOMOYO_KEYWORD_NUMBER_GROUP "number_group "
#define TOMOYO_KEYWORD_SELECT "select " #define TOMOYO_KEYWORD_SELECT "select "
#define TOMOYO_KEYWORD_USE_PROFILE "use_profile " #define TOMOYO_KEYWORD_USE_PROFILE "use_profile "
#define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "ignore_global_allow_read" #define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "ignore_global_allow_read"
...@@ -62,6 +63,12 @@ struct linux_binprm; ...@@ -62,6 +63,12 @@ struct linux_binprm;
#define TOMOYO_ROOT_NAME "<kernel>" #define TOMOYO_ROOT_NAME "<kernel>"
#define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1) #define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1)
/* Value type definition. */
#define TOMOYO_VALUE_TYPE_INVALID 0
#define TOMOYO_VALUE_TYPE_DECIMAL 1
#define TOMOYO_VALUE_TYPE_OCTAL 2
#define TOMOYO_VALUE_TYPE_HEXADECIMAL 3
/* Index numbers for Access Controls. */ /* Index numbers for Access Controls. */
enum tomoyo_mac_index { enum tomoyo_mac_index {
TOMOYO_MAC_FOR_FILE, /* domain_policy.conf */ TOMOYO_MAC_FOR_FILE, /* domain_policy.conf */
...@@ -211,6 +218,14 @@ struct tomoyo_name_union { ...@@ -211,6 +218,14 @@ struct tomoyo_name_union {
u8 is_group; u8 is_group;
}; };
struct tomoyo_number_union {
unsigned long values[2];
struct tomoyo_number_group *group;
u8 min_type;
u8 max_type;
u8 is_group;
};
/* Structure for "path_group" directive. */ /* Structure for "path_group" directive. */
struct tomoyo_path_group { struct tomoyo_path_group {
struct list_head list; struct list_head list;
...@@ -219,6 +234,14 @@ struct tomoyo_path_group { ...@@ -219,6 +234,14 @@ struct tomoyo_path_group {
atomic_t users; atomic_t users;
}; };
/* Structure for "number_group" directive. */
struct tomoyo_number_group {
struct list_head list;
const struct tomoyo_path_info *group_name;
struct list_head member_list;
atomic_t users;
};
/* Structure for "path_group" directive. */ /* Structure for "path_group" directive. */
struct tomoyo_path_group_member { struct tomoyo_path_group_member {
struct list_head list; struct list_head list;
...@@ -226,6 +249,13 @@ struct tomoyo_path_group_member { ...@@ -226,6 +249,13 @@ struct tomoyo_path_group_member {
const struct tomoyo_path_info *member_name; const struct tomoyo_path_info *member_name;
}; };
/* Structure for "number_group" directive. */
struct tomoyo_number_group_member {
struct list_head list;
bool is_deleted;
struct tomoyo_number_union number;
};
/* /*
* tomoyo_acl_info is a structure which is used for holding * tomoyo_acl_info is a structure which is used for holding
* *
...@@ -554,9 +584,18 @@ bool tomoyo_parse_name_union(const char *filename, ...@@ -554,9 +584,18 @@ bool tomoyo_parse_name_union(const char *filename,
bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname, bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname,
const struct tomoyo_path_group *group, const struct tomoyo_path_group *group,
const bool may_use_pattern); const bool may_use_pattern);
/* Check whether the given value matches the given number_group. */
bool tomoyo_number_matches_group(const unsigned long min,
const unsigned long max,
const struct tomoyo_number_group *group);
/* Check whether the given filename matches the given pattern. */ /* Check whether the given filename matches the given pattern. */
bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename, bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
const struct tomoyo_path_info *pattern); const struct tomoyo_path_info *pattern);
bool tomoyo_print_number_union(struct tomoyo_io_buffer *head,
const struct tomoyo_number_union *ptr);
bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num);
/* Read "alias" entry in exception policy. */ /* Read "alias" entry in exception policy. */
bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head); bool tomoyo_read_alias_policy(struct tomoyo_io_buffer *head);
/* /*
...@@ -570,6 +609,8 @@ bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head); ...@@ -570,6 +609,8 @@ bool tomoyo_read_domain_keeper_policy(struct tomoyo_io_buffer *head);
bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head); bool tomoyo_read_file_pattern(struct tomoyo_io_buffer *head);
/* Read "path_group" entry in exception policy. */ /* Read "path_group" entry in exception policy. */
bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head); bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head);
/* Read "number_group" entry in exception policy. */
bool tomoyo_read_number_group_policy(struct tomoyo_io_buffer *head);
/* Read "allow_read" entry in exception policy. */ /* Read "allow_read" entry in exception policy. */
bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head); bool tomoyo_read_globally_readable_policy(struct tomoyo_io_buffer *head);
/* Read "deny_rewrite" entry in exception policy. */ /* Read "deny_rewrite" entry in exception policy. */
...@@ -614,6 +655,8 @@ int tomoyo_write_no_rewrite_policy(char *data, const bool is_delete); ...@@ -614,6 +655,8 @@ int tomoyo_write_no_rewrite_policy(char *data, const bool is_delete);
int tomoyo_write_pattern_policy(char *data, const bool is_delete); int tomoyo_write_pattern_policy(char *data, const bool is_delete);
/* Create "path_group" entry in exception policy. */ /* Create "path_group" entry in exception policy. */
int tomoyo_write_path_group_policy(char *data, const bool is_delete); int tomoyo_write_path_group_policy(char *data, const bool is_delete);
/* Create "number_group" entry in exception policy. */
int tomoyo_write_number_group_policy(char *data, const bool is_delete);
/* Find a domain by the given name. */ /* Find a domain by the given name. */
struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname); struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
/* Find or create a domain by the given name. */ /* Find or create a domain by the given name. */
...@@ -623,6 +666,7 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char * ...@@ -623,6 +666,7 @@ struct tomoyo_domain_info *tomoyo_find_or_assign_new_domain(const char *
/* Allocate memory for "struct tomoyo_path_group". */ /* Allocate memory for "struct tomoyo_path_group". */
struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name); struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name);
struct tomoyo_number_group *tomoyo_get_number_group(const char *group_name);
/* Check mode for specified functionality. */ /* Check mode for specified functionality. */
unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain, unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
...@@ -632,6 +676,8 @@ void tomoyo_fill_path_info(struct tomoyo_path_info *ptr); ...@@ -632,6 +676,8 @@ void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
/* Run policy loader when /sbin/init starts. */ /* Run policy loader when /sbin/init starts. */
void tomoyo_load_policy(const char *filename); void tomoyo_load_policy(const char *filename);
void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
/* Convert binary string to ascii string. */ /* Convert binary string to ascii string. */
int tomoyo_encode(char *buffer, int buflen, const char *str); int tomoyo_encode(char *buffer, int buflen, const char *str);
...@@ -697,6 +743,7 @@ extern struct srcu_struct tomoyo_ss; ...@@ -697,6 +743,7 @@ extern struct srcu_struct tomoyo_ss;
extern struct list_head tomoyo_domain_list; extern struct list_head tomoyo_domain_list;
extern struct list_head tomoyo_path_group_list; extern struct list_head tomoyo_path_group_list;
extern struct list_head tomoyo_number_group_list;
extern struct list_head tomoyo_domain_initializer_list; extern struct list_head tomoyo_domain_initializer_list;
extern struct list_head tomoyo_domain_keeper_list; extern struct list_head tomoyo_domain_keeper_list;
extern struct list_head tomoyo_alias_list; extern struct list_head tomoyo_alias_list;
...@@ -773,6 +820,12 @@ static inline void tomoyo_put_path_group(struct tomoyo_path_group *group) ...@@ -773,6 +820,12 @@ static inline void tomoyo_put_path_group(struct tomoyo_path_group *group)
atomic_dec(&group->users); atomic_dec(&group->users);
} }
static inline void tomoyo_put_number_group(struct tomoyo_number_group *group)
{
if (group)
atomic_dec(&group->users);
}
static inline struct tomoyo_domain_info *tomoyo_domain(void) static inline struct tomoyo_domain_info *tomoyo_domain(void)
{ {
return current_cred()->security; return current_cred()->security;
...@@ -797,6 +850,14 @@ static inline bool tomoyo_is_same_name_union ...@@ -797,6 +850,14 @@ static inline bool tomoyo_is_same_name_union
p1->is_group == p2->is_group; p1->is_group == p2->is_group;
} }
static inline bool tomoyo_is_same_number_union
(const struct tomoyo_number_union *p1, const struct tomoyo_number_union *p2)
{
return p1->values[0] == p2->values[0] && p1->values[1] == p2->values[1]
&& p1->group == p2->group && p1->min_type == p2->min_type &&
p1->max_type == p2->max_type && p1->is_group == p2->is_group;
}
static inline bool tomoyo_is_same_path_acl(const struct tomoyo_path_acl *p1, static inline bool tomoyo_is_same_path_acl(const struct tomoyo_path_acl *p1,
const struct tomoyo_path_acl *p2) const struct tomoyo_path_acl *p2)
{ {
......
...@@ -76,6 +76,20 @@ static bool tomoyo_compare_name_union_pattern(const struct tomoyo_path_info ...@@ -76,6 +76,20 @@ static bool tomoyo_compare_name_union_pattern(const struct tomoyo_path_info
return false; return false;
} }
void tomoyo_put_number_union(struct tomoyo_number_union *ptr)
{
if (ptr && ptr->is_group)
tomoyo_put_number_group(ptr->group);
}
bool tomoyo_compare_number_union(const unsigned long value,
const struct tomoyo_number_union *ptr)
{
if (ptr->is_group)
return tomoyo_number_matches_group(value, value, ptr->group);
return value >= ptr->values[0] && value <= ptr->values[1];
}
/** /**
* tomoyo_path2keyword - Get the name of single path operation. * tomoyo_path2keyword - Get the name of single path operation.
* *
......
...@@ -14,6 +14,8 @@ ...@@ -14,6 +14,8 @@
enum tomoyo_gc_id { enum tomoyo_gc_id {
TOMOYO_ID_PATH_GROUP, TOMOYO_ID_PATH_GROUP,
TOMOYO_ID_PATH_GROUP_MEMBER, TOMOYO_ID_PATH_GROUP_MEMBER,
TOMOYO_ID_NUMBER_GROUP,
TOMOYO_ID_NUMBER_GROUP_MEMBER,
TOMOYO_ID_DOMAIN_INITIALIZER, TOMOYO_ID_DOMAIN_INITIALIZER,
TOMOYO_ID_DOMAIN_KEEPER, TOMOYO_ID_DOMAIN_KEEPER,
TOMOYO_ID_ALIAS, TOMOYO_ID_ALIAS,
...@@ -162,6 +164,16 @@ static void tomoyo_del_path_group(struct tomoyo_path_group *group) ...@@ -162,6 +164,16 @@ static void tomoyo_del_path_group(struct tomoyo_path_group *group)
tomoyo_put_name(group->group_name); tomoyo_put_name(group->group_name);
} }
static void tomoyo_del_number_group_member(struct tomoyo_number_group_member
*member)
{
}
static void tomoyo_del_number_group(struct tomoyo_number_group *group)
{
tomoyo_put_name(group->group_name);
}
static void tomoyo_collect_entry(void) static void tomoyo_collect_entry(void)
{ {
if (mutex_lock_interruptible(&tomoyo_policy_lock)) if (mutex_lock_interruptible(&tomoyo_policy_lock))
...@@ -329,6 +341,29 @@ static void tomoyo_collect_entry(void) ...@@ -329,6 +341,29 @@ static void tomoyo_collect_entry(void)
break; break;
} }
} }
{
struct tomoyo_number_group *group;
list_for_each_entry_rcu(group, &tomoyo_number_group_list, list) {
struct tomoyo_number_group_member *member;
list_for_each_entry_rcu(member, &group->member_list,
list) {
if (!member->is_deleted)
continue;
if (tomoyo_add_to_gc(TOMOYO_ID_NUMBER_GROUP_MEMBER,
member))
list_del_rcu(&member->list);
else
break;
}
if (!list_empty(&group->member_list) ||
atomic_read(&group->users))
continue;
if (tomoyo_add_to_gc(TOMOYO_ID_NUMBER_GROUP, group))
list_del_rcu(&group->list);
else
break;
}
}
mutex_unlock(&tomoyo_policy_lock); mutex_unlock(&tomoyo_policy_lock);
} }
...@@ -376,6 +411,12 @@ static void tomoyo_kfree_entry(void) ...@@ -376,6 +411,12 @@ static void tomoyo_kfree_entry(void)
case TOMOYO_ID_PATH_GROUP: case TOMOYO_ID_PATH_GROUP:
tomoyo_del_path_group(p->element); tomoyo_del_path_group(p->element);
break; break;
case TOMOYO_ID_NUMBER_GROUP_MEMBER:
tomoyo_del_number_group_member(p->element);
break;
case TOMOYO_ID_NUMBER_GROUP:
tomoyo_del_number_group(p->element);
break;
default: default:
printk(KERN_WARNING "Unknown type\n"); printk(KERN_WARNING "Unknown type\n");
break; break;
......
/*
* security/tomoyo/number_group.c
*
* Copyright (C) 2005-2009 NTT DATA CORPORATION
*/
#include <linux/slab.h>
#include "common.h"
/* The list for "struct tomoyo_number_group". */
LIST_HEAD(tomoyo_number_group_list);
/**
* tomoyo_get_number_group - Allocate memory for "struct tomoyo_number_group".
*
* @group_name: The name of number group.
*
* Returns pointer to "struct tomoyo_number_group" on success,
* NULL otherwise.
*/
struct tomoyo_number_group *tomoyo_get_number_group(const char *group_name)
{
struct tomoyo_number_group *entry = NULL;
struct tomoyo_number_group *group = NULL;
const struct tomoyo_path_info *saved_group_name;
int error = -ENOMEM;
if (!tomoyo_is_correct_path(group_name, 0, 0, 0) ||
!group_name[0])
return NULL;
saved_group_name = tomoyo_get_name(group_name);
if (!saved_group_name)
return NULL;
entry = kzalloc(sizeof(*entry), GFP_NOFS);
if (mutex_lock_interruptible(&tomoyo_policy_lock))
goto out;
list_for_each_entry_rcu(group, &tomoyo_number_group_list, list) {
if (saved_group_name != group->group_name)
continue;
atomic_inc(&group->users);
error = 0;
break;
}
if (error && tomoyo_memory_ok(entry)) {
INIT_LIST_HEAD(&entry->member_list);
entry->group_name = saved_group_name;
saved_group_name = NULL;
atomic_set(&entry->users, 1);
list_add_tail_rcu(&entry->list, &tomoyo_number_group_list);
group = entry;
entry = NULL;
error = 0;
}
mutex_unlock(&tomoyo_policy_lock);
out:
tomoyo_put_name(saved_group_name);
kfree(entry);
return !error ? group : NULL;
}
/**
* tomoyo_write_number_group_policy - Write "struct tomoyo_number_group" list.
*
* @data: String to parse.
* @is_delete: True if it is a delete request.
*
* Returns 0 on success, nagative value otherwise.
*/
int tomoyo_write_number_group_policy(char *data, const bool is_delete)
{
struct tomoyo_number_group *group;
struct tomoyo_number_group_member e = { };
struct tomoyo_number_group_member *member;
int error = is_delete ? -ENOENT : -ENOMEM;
char *w[2];
if (!tomoyo_tokenize(data, w, sizeof(w)))
return -EINVAL;
if (!tomoyo_parse_number_union(w[1], &e.number))
return -EINVAL;
if (e.number.is_group || e.number.values[0] > e.number.values[1]) {
tomoyo_put_number_union(&e.number);
return -EINVAL;
}
group = tomoyo_get_number_group(w[0]);
if (!group)
return -ENOMEM;
if (mutex_lock_interruptible(&tomoyo_policy_lock))
goto out;
list_for_each_entry_rcu(member, &group->member_list, list) {
if (memcmp(&member->number, &e.number, sizeof(e.number)))
continue;
member->is_deleted = is_delete;
error = 0;
break;
}
if (!is_delete && error) {
struct tomoyo_number_group_member *entry =
tomoyo_commit_ok(&e, sizeof(e));
if (entry) {
list_add_tail_rcu(&entry->list, &group->member_list);
error = 0;
}
}
mutex_unlock(&tomoyo_policy_lock);