In order to synchronize with TOMOYO 1.8's syntax, (1) Remove special handling for allow_read/write permission. (2) Replace deny_rewrite/allow_rewrite permission with allow_append permission. (3) Remove file_pattern keyword. (4) Remove allow_read permission from exception policy. (5) Allow creating domains in enforcing mode without calling supervisor. (6) Add permission check for opening directory for reading. (7) Add permission check for stat() operation. (8) Make "cat < /sys/kernel/security/tomoyo/self_domain" behave as if "cat /sys/kernel/security/tomoyo/self_domain". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
943 lines
30 KiB
C
943 lines
30 KiB
C
/*
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* security/tomoyo/common.h
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*
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* Header file for TOMOYO.
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*
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* Copyright (C) 2005-2010 NTT DATA CORPORATION
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*/
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#ifndef _SECURITY_TOMOYO_COMMON_H
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#define _SECURITY_TOMOYO_COMMON_H
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#include <linux/ctype.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/file.h>
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#include <linux/kmod.h>
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#include <linux/fs.h>
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#include <linux/sched.h>
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#include <linux/namei.h>
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#include <linux/mount.h>
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#include <linux/list.h>
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#include <linux/cred.h>
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#include <linux/poll.h>
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struct linux_binprm;
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/********** Constants definitions. **********/
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/*
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* TOMOYO uses this hash only when appending a string into the string
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* table. Frequency of appending strings is very low. So we don't need
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* large (e.g. 64k) hash size. 256 will be sufficient.
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*/
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#define TOMOYO_HASH_BITS 8
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#define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS)
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#define TOMOYO_EXEC_TMPSIZE 4096
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/* Profile number is an integer between 0 and 255. */
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#define TOMOYO_MAX_PROFILES 256
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enum tomoyo_mode_index {
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TOMOYO_CONFIG_DISABLED,
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TOMOYO_CONFIG_LEARNING,
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TOMOYO_CONFIG_PERMISSIVE,
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TOMOYO_CONFIG_ENFORCING,
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TOMOYO_CONFIG_USE_DEFAULT = 255
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};
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enum tomoyo_policy_id {
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TOMOYO_ID_GROUP,
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TOMOYO_ID_PATH_GROUP,
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TOMOYO_ID_NUMBER_GROUP,
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TOMOYO_ID_TRANSITION_CONTROL,
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TOMOYO_ID_AGGREGATOR,
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TOMOYO_ID_MANAGER,
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TOMOYO_ID_NAME,
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TOMOYO_ID_ACL,
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TOMOYO_ID_DOMAIN,
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TOMOYO_MAX_POLICY
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};
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enum tomoyo_group_id {
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TOMOYO_PATH_GROUP,
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TOMOYO_NUMBER_GROUP,
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TOMOYO_MAX_GROUP
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};
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/* Keywords for ACLs. */
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#define TOMOYO_KEYWORD_AGGREGATOR "aggregator "
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#define TOMOYO_KEYWORD_ALLOW_MOUNT "allow_mount "
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#define TOMOYO_KEYWORD_ALLOW_READ "allow_read "
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#define TOMOYO_KEYWORD_DELETE "delete "
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#define TOMOYO_KEYWORD_INITIALIZE_DOMAIN "initialize_domain "
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#define TOMOYO_KEYWORD_KEEP_DOMAIN "keep_domain "
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#define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain "
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#define TOMOYO_KEYWORD_NO_KEEP_DOMAIN "no_keep_domain "
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#define TOMOYO_KEYWORD_PATH_GROUP "path_group "
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#define TOMOYO_KEYWORD_NUMBER_GROUP "number_group "
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#define TOMOYO_KEYWORD_SELECT "select "
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#define TOMOYO_KEYWORD_USE_PROFILE "use_profile "
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#define TOMOYO_KEYWORD_QUOTA_EXCEEDED "quota_exceeded"
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#define TOMOYO_KEYWORD_TRANSITION_FAILED "transition_failed"
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/* A domain definition starts with <kernel>. */
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#define TOMOYO_ROOT_NAME "<kernel>"
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#define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1)
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/* Value type definition. */
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#define TOMOYO_VALUE_TYPE_INVALID 0
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#define TOMOYO_VALUE_TYPE_DECIMAL 1
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#define TOMOYO_VALUE_TYPE_OCTAL 2
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#define TOMOYO_VALUE_TYPE_HEXADECIMAL 3
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enum tomoyo_transition_type {
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/* Do not change this order, */
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TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE,
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TOMOYO_TRANSITION_CONTROL_INITIALIZE,
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TOMOYO_TRANSITION_CONTROL_NO_KEEP,
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TOMOYO_TRANSITION_CONTROL_KEEP,
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TOMOYO_MAX_TRANSITION_TYPE
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};
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/* Index numbers for Access Controls. */
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enum tomoyo_acl_entry_type_index {
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TOMOYO_TYPE_PATH_ACL,
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TOMOYO_TYPE_PATH2_ACL,
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TOMOYO_TYPE_PATH_NUMBER_ACL,
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TOMOYO_TYPE_MKDEV_ACL,
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TOMOYO_TYPE_MOUNT_ACL,
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};
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/* Index numbers for File Controls. */
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enum tomoyo_path_acl_index {
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TOMOYO_TYPE_EXECUTE,
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TOMOYO_TYPE_READ,
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TOMOYO_TYPE_WRITE,
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TOMOYO_TYPE_APPEND,
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TOMOYO_TYPE_UNLINK,
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TOMOYO_TYPE_GETATTR,
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TOMOYO_TYPE_RMDIR,
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TOMOYO_TYPE_TRUNCATE,
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TOMOYO_TYPE_SYMLINK,
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TOMOYO_TYPE_CHROOT,
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TOMOYO_TYPE_UMOUNT,
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TOMOYO_MAX_PATH_OPERATION
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};
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enum tomoyo_mkdev_acl_index {
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TOMOYO_TYPE_MKBLOCK,
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TOMOYO_TYPE_MKCHAR,
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TOMOYO_MAX_MKDEV_OPERATION
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};
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enum tomoyo_path2_acl_index {
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TOMOYO_TYPE_LINK,
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TOMOYO_TYPE_RENAME,
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TOMOYO_TYPE_PIVOT_ROOT,
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TOMOYO_MAX_PATH2_OPERATION
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};
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enum tomoyo_path_number_acl_index {
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TOMOYO_TYPE_CREATE,
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TOMOYO_TYPE_MKDIR,
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TOMOYO_TYPE_MKFIFO,
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TOMOYO_TYPE_MKSOCK,
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TOMOYO_TYPE_IOCTL,
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TOMOYO_TYPE_CHMOD,
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TOMOYO_TYPE_CHOWN,
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TOMOYO_TYPE_CHGRP,
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TOMOYO_MAX_PATH_NUMBER_OPERATION
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};
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enum tomoyo_securityfs_interface_index {
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TOMOYO_DOMAINPOLICY,
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TOMOYO_EXCEPTIONPOLICY,
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TOMOYO_DOMAIN_STATUS,
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TOMOYO_PROCESS_STATUS,
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TOMOYO_MEMINFO,
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TOMOYO_SELFDOMAIN,
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TOMOYO_VERSION,
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TOMOYO_PROFILE,
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TOMOYO_QUERY,
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TOMOYO_MANAGER
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};
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enum tomoyo_mac_index {
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TOMOYO_MAC_FILE_EXECUTE,
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TOMOYO_MAC_FILE_OPEN,
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TOMOYO_MAC_FILE_CREATE,
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TOMOYO_MAC_FILE_UNLINK,
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TOMOYO_MAC_FILE_GETATTR,
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TOMOYO_MAC_FILE_MKDIR,
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TOMOYO_MAC_FILE_RMDIR,
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TOMOYO_MAC_FILE_MKFIFO,
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TOMOYO_MAC_FILE_MKSOCK,
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TOMOYO_MAC_FILE_TRUNCATE,
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TOMOYO_MAC_FILE_SYMLINK,
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TOMOYO_MAC_FILE_MKBLOCK,
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TOMOYO_MAC_FILE_MKCHAR,
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TOMOYO_MAC_FILE_LINK,
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TOMOYO_MAC_FILE_RENAME,
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TOMOYO_MAC_FILE_CHMOD,
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TOMOYO_MAC_FILE_CHOWN,
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TOMOYO_MAC_FILE_CHGRP,
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TOMOYO_MAC_FILE_IOCTL,
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TOMOYO_MAC_FILE_CHROOT,
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TOMOYO_MAC_FILE_MOUNT,
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TOMOYO_MAC_FILE_UMOUNT,
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TOMOYO_MAC_FILE_PIVOT_ROOT,
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TOMOYO_MAX_MAC_INDEX
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};
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enum tomoyo_mac_category_index {
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TOMOYO_MAC_CATEGORY_FILE,
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TOMOYO_MAX_MAC_CATEGORY_INDEX
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};
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#define TOMOYO_RETRY_REQUEST 1 /* Retry this request. */
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/********** Structure definitions. **********/
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/*
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* tomoyo_acl_head is a structure which is used for holding elements not in
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* domain policy.
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* It has following fields.
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*
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* (1) "list" which is linked to tomoyo_policy_list[] .
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* (2) "is_deleted" is a bool which is true if marked as deleted, false
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* otherwise.
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*/
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struct tomoyo_acl_head {
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struct list_head list;
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bool is_deleted;
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} __packed;
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/*
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* tomoyo_request_info is a structure which is used for holding
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*
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* (1) Domain information of current process.
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* (2) How many retries are made for this request.
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* (3) Profile number used for this request.
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* (4) Access control mode of the profile.
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*/
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struct tomoyo_request_info {
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struct tomoyo_domain_info *domain;
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/* For holding parameters. */
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union {
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struct {
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const struct tomoyo_path_info *filename;
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/* For using wildcards at tomoyo_find_next_domain(). */
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const struct tomoyo_path_info *matched_path;
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u8 operation;
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} path;
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struct {
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const struct tomoyo_path_info *filename1;
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const struct tomoyo_path_info *filename2;
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u8 operation;
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} path2;
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struct {
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const struct tomoyo_path_info *filename;
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unsigned int mode;
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unsigned int major;
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unsigned int minor;
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u8 operation;
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} mkdev;
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struct {
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const struct tomoyo_path_info *filename;
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unsigned long number;
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u8 operation;
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} path_number;
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struct {
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const struct tomoyo_path_info *type;
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const struct tomoyo_path_info *dir;
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const struct tomoyo_path_info *dev;
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unsigned long flags;
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int need_dev;
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} mount;
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} param;
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u8 param_type;
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bool granted;
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u8 retry;
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u8 profile;
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u8 mode; /* One of tomoyo_mode_index . */
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u8 type;
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};
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/*
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* tomoyo_path_info is a structure which is used for holding a string data
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* used by TOMOYO.
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* This structure has several fields for supporting pattern matching.
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*
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* (1) "name" is the '\0' terminated string data.
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* (2) "hash" is full_name_hash(name, strlen(name)).
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* This allows tomoyo_pathcmp() to compare by hash before actually compare
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* using strcmp().
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* (3) "const_len" is the length of the initial segment of "name" which
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* consists entirely of non wildcard characters. In other words, the length
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* which we can compare two strings using strncmp().
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* (4) "is_dir" is a bool which is true if "name" ends with "/",
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* false otherwise.
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* TOMOYO distinguishes directory and non-directory. A directory ends with
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* "/" and non-directory does not end with "/".
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* (5) "is_patterned" is a bool which is true if "name" contains wildcard
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* characters, false otherwise. This allows TOMOYO to use "hash" and
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* strcmp() for string comparison if "is_patterned" is false.
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*/
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struct tomoyo_path_info {
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const char *name;
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u32 hash; /* = full_name_hash(name, strlen(name)) */
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u16 const_len; /* = tomoyo_const_part_length(name) */
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bool is_dir; /* = tomoyo_strendswith(name, "/") */
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bool is_patterned; /* = tomoyo_path_contains_pattern(name) */
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};
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/*
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* tomoyo_name is a structure which is used for linking
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* "struct tomoyo_path_info" into tomoyo_name_list .
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*/
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struct tomoyo_name {
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struct list_head list;
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atomic_t users;
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struct tomoyo_path_info entry;
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};
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struct tomoyo_name_union {
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const struct tomoyo_path_info *filename;
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struct tomoyo_group *group;
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u8 is_group;
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};
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struct tomoyo_number_union {
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unsigned long values[2];
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struct tomoyo_group *group;
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u8 min_type;
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u8 max_type;
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u8 is_group;
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};
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/* Structure for "path_group"/"number_group" directive. */
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struct tomoyo_group {
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struct list_head list;
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const struct tomoyo_path_info *group_name;
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struct list_head member_list;
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atomic_t users;
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};
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/* Structure for "path_group" directive. */
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struct tomoyo_path_group {
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struct tomoyo_acl_head head;
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const struct tomoyo_path_info *member_name;
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};
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/* Structure for "number_group" directive. */
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struct tomoyo_number_group {
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struct tomoyo_acl_head head;
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struct tomoyo_number_union number;
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};
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/*
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* tomoyo_acl_info is a structure which is used for holding
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*
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* (1) "list" which is linked to the ->acl_info_list of
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* "struct tomoyo_domain_info"
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* (2) "is_deleted" is a bool which is true if this domain is marked as
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* "deleted", false otherwise.
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* (3) "type" which tells type of the entry.
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*
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* Packing "struct tomoyo_acl_info" allows
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* "struct tomoyo_path_acl" to embed "u16" and "struct tomoyo_path2_acl"
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* "struct tomoyo_path_number_acl" "struct tomoyo_mkdev_acl" to embed
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* "u8" without enlarging their structure size.
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*/
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struct tomoyo_acl_info {
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struct list_head list;
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bool is_deleted;
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u8 type; /* = one of values in "enum tomoyo_acl_entry_type_index". */
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} __packed;
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/*
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* tomoyo_domain_info is a structure which is used for holding permissions
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* (e.g. "allow_read /lib/libc-2.5.so") given to each domain.
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* It has following fields.
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*
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* (1) "list" which is linked to tomoyo_domain_list .
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* (2) "acl_info_list" which is linked to "struct tomoyo_acl_info".
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* (3) "domainname" which holds the name of the domain.
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* (4) "profile" which remembers profile number assigned to this domain.
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* (5) "is_deleted" is a bool which is true if this domain is marked as
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* "deleted", false otherwise.
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* (6) "quota_warned" is a bool which is used for suppressing warning message
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* when learning mode learned too much entries.
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* (7) "transition_failed" is a bool which is set to true when this domain was
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* unable to create a new domain at tomoyo_find_next_domain() because the
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* name of the domain to be created was too long or it could not allocate
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* memory. If set to true, more than one process continued execve()
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* without domain transition.
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* (9) "users" is an atomic_t that holds how many "struct cred"->security
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* are referring this "struct tomoyo_domain_info". If is_deleted == true
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* and users == 0, this struct will be kfree()d upon next garbage
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* collection.
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*
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* A domain's lifecycle is an analogy of files on / directory.
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* Multiple domains with the same domainname cannot be created (as with
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* creating files with the same filename fails with -EEXIST).
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* If a process reached a domain, that process can reside in that domain after
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* that domain is marked as "deleted" (as with a process can access an already
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* open()ed file after that file was unlink()ed).
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*/
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struct tomoyo_domain_info {
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struct list_head list;
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struct list_head acl_info_list;
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/* Name of this domain. Never NULL. */
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const struct tomoyo_path_info *domainname;
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u8 profile; /* Profile number to use. */
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bool is_deleted; /* Delete flag. */
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bool quota_warned; /* Quota warnning flag. */
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bool transition_failed; /* Domain transition failed flag. */
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atomic_t users; /* Number of referring credentials. */
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};
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/*
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* tomoyo_path_acl is a structure which is used for holding an
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* entry with one pathname operation (e.g. open(), mkdir()).
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* It has following fields.
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*
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* (1) "head" which is a "struct tomoyo_acl_info".
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* (2) "perm" which is a bitmask of permitted operations.
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* (3) "name" is the pathname.
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*
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* Directives held by this structure are "allow_execute", "allow_read",
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* "allow_write", "allow_append", "allow_unlink", "allow_rmdir",
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* "allow_truncate", "allow_symlink", "allow_chroot" and "allow_unmount".
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*/
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struct tomoyo_path_acl {
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struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
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u16 perm;
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struct tomoyo_name_union name;
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};
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/*
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* tomoyo_path_number_acl is a structure which is used for holding an
|
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* entry with one pathname and one number operation.
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* It has following fields.
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*
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* (1) "head" which is a "struct tomoyo_acl_info".
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* (2) "perm" which is a bitmask of permitted operations.
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* (3) "name" is the pathname.
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* (4) "number" is the numeric value.
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*
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* Directives held by this structure are "allow_create", "allow_mkdir",
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* "allow_ioctl", "allow_mkfifo", "allow_mksock", "allow_chmod", "allow_chown"
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* and "allow_chgrp".
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*
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*/
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struct tomoyo_path_number_acl {
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struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
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u8 perm;
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struct tomoyo_name_union name;
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struct tomoyo_number_union number;
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};
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/*
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* tomoyo_mkdev_acl is a structure which is used for holding an
|
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* entry with one pathname and three numbers operation.
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* It has following fields.
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*
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* (1) "head" which is a "struct tomoyo_acl_info".
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* (2) "perm" which is a bitmask of permitted operations.
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* (3) "mode" is the create mode.
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* (4) "major" is the major number of device node.
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* (5) "minor" is the minor number of device node.
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*
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* Directives held by this structure are "allow_mkchar", "allow_mkblock".
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*
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*/
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struct tomoyo_mkdev_acl {
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struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */
|
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u8 perm;
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struct tomoyo_name_union name;
|
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struct tomoyo_number_union mode;
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struct tomoyo_number_union major;
|
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struct tomoyo_number_union minor;
|
|
};
|
|
|
|
/*
|
|
* tomoyo_path2_acl is a structure which is used for holding an
|
|
* entry with two pathnames operation (i.e. link(), rename() and pivot_root()).
|
|
* It has following fields.
|
|
*
|
|
* (1) "head" which is a "struct tomoyo_acl_info".
|
|
* (2) "perm" which is a bitmask of permitted operations.
|
|
* (3) "name1" is the source/old pathname.
|
|
* (4) "name2" is the destination/new pathname.
|
|
*
|
|
* Directives held by this structure are "allow_rename", "allow_link" and
|
|
* "allow_pivot_root".
|
|
*/
|
|
struct tomoyo_path2_acl {
|
|
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */
|
|
u8 perm;
|
|
struct tomoyo_name_union name1;
|
|
struct tomoyo_name_union name2;
|
|
};
|
|
|
|
/*
|
|
* tomoyo_mount_acl is a structure which is used for holding an
|
|
* entry for mount operation.
|
|
* It has following fields.
|
|
*
|
|
* (1) "head" which is a "struct tomoyo_acl_info".
|
|
* (2) "dev_name" is the device name.
|
|
* (3) "dir_name" is the mount point.
|
|
* (4) "fs_type" is the filesystem type.
|
|
* (5) "flags" is the mount flags.
|
|
*
|
|
* Directive held by this structure is "allow_mount".
|
|
*/
|
|
struct tomoyo_mount_acl {
|
|
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */
|
|
struct tomoyo_name_union dev_name;
|
|
struct tomoyo_name_union dir_name;
|
|
struct tomoyo_name_union fs_type;
|
|
struct tomoyo_number_union flags;
|
|
};
|
|
|
|
#define TOMOYO_MAX_IO_READ_QUEUE 32
|
|
|
|
/*
|
|
* Structure for reading/writing policy via /sys/kernel/security/tomoyo
|
|
* interfaces.
|
|
*/
|
|
struct tomoyo_io_buffer {
|
|
void (*read) (struct tomoyo_io_buffer *);
|
|
int (*write) (struct tomoyo_io_buffer *);
|
|
int (*poll) (struct file *file, poll_table *wait);
|
|
/* Exclusive lock for this structure. */
|
|
struct mutex io_sem;
|
|
/* Index returned by tomoyo_read_lock(). */
|
|
int reader_idx;
|
|
char __user *read_user_buf;
|
|
int read_user_buf_avail;
|
|
struct {
|
|
struct list_head *domain;
|
|
struct list_head *group;
|
|
struct list_head *acl;
|
|
int avail;
|
|
int step;
|
|
int query_index;
|
|
u16 index;
|
|
u8 bit;
|
|
u8 w_pos;
|
|
bool eof;
|
|
bool print_this_domain_only;
|
|
bool print_execute_only;
|
|
const char *w[TOMOYO_MAX_IO_READ_QUEUE];
|
|
} r;
|
|
/* The position currently writing to. */
|
|
struct tomoyo_domain_info *write_var1;
|
|
/* Buffer for reading. */
|
|
char *read_buf;
|
|
/* Size of read buffer. */
|
|
int readbuf_size;
|
|
/* Buffer for writing. */
|
|
char *write_buf;
|
|
/* Bytes available for writing. */
|
|
int write_avail;
|
|
/* Size of write buffer. */
|
|
int writebuf_size;
|
|
/* Type of this interface. */
|
|
u8 type;
|
|
};
|
|
|
|
/*
|
|
* tomoyo_transition_control is a structure which is used for holding
|
|
* "initialize_domain"/"no_initialize_domain"/"keep_domain"/"no_keep_domain"
|
|
* entries.
|
|
* It has following fields.
|
|
*
|
|
* (1) "head" is "struct tomoyo_acl_head".
|
|
* (2) "type" is type of this entry.
|
|
* (3) "is_last_name" is a bool which is true if "domainname" is "the last
|
|
* component of a domainname", false otherwise.
|
|
* (4) "domainname" which is "a domainname" or "the last component of a
|
|
* domainname".
|
|
* (5) "program" which is a program's pathname.
|
|
*/
|
|
struct tomoyo_transition_control {
|
|
struct tomoyo_acl_head head;
|
|
u8 type; /* One of values in "enum tomoyo_transition_type". */
|
|
/* True if the domainname is tomoyo_get_last_name(). */
|
|
bool is_last_name;
|
|
const struct tomoyo_path_info *domainname; /* Maybe NULL */
|
|
const struct tomoyo_path_info *program; /* Maybe NULL */
|
|
};
|
|
|
|
/*
|
|
* tomoyo_aggregator is a structure which is used for holding
|
|
* "aggregator" entries.
|
|
* It has following fields.
|
|
*
|
|
* (1) "head" is "struct tomoyo_acl_head".
|
|
* (2) "original_name" which is originally requested name.
|
|
* (3) "aggregated_name" which is name to rewrite.
|
|
*/
|
|
struct tomoyo_aggregator {
|
|
struct tomoyo_acl_head head;
|
|
const struct tomoyo_path_info *original_name;
|
|
const struct tomoyo_path_info *aggregated_name;
|
|
};
|
|
|
|
/*
|
|
* tomoyo_manager is a structure which is used for holding list of
|
|
* domainnames or programs which are permitted to modify configuration via
|
|
* /sys/kernel/security/tomoyo/ interface.
|
|
* It has following fields.
|
|
*
|
|
* (1) "head" is "struct tomoyo_acl_head".
|
|
* (2) "is_domain" is a bool which is true if "manager" is a domainname, false
|
|
* otherwise.
|
|
* (3) "manager" is a domainname or a program's pathname.
|
|
*/
|
|
struct tomoyo_manager {
|
|
struct tomoyo_acl_head head;
|
|
bool is_domain; /* True if manager is a domainname. */
|
|
/* A path to program or a domainname. */
|
|
const struct tomoyo_path_info *manager;
|
|
};
|
|
|
|
struct tomoyo_preference {
|
|
unsigned int learning_max_entry;
|
|
bool enforcing_verbose;
|
|
bool learning_verbose;
|
|
bool permissive_verbose;
|
|
};
|
|
|
|
struct tomoyo_profile {
|
|
const struct tomoyo_path_info *comment;
|
|
struct tomoyo_preference *learning;
|
|
struct tomoyo_preference *permissive;
|
|
struct tomoyo_preference *enforcing;
|
|
struct tomoyo_preference preference;
|
|
u8 default_config;
|
|
u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX];
|
|
};
|
|
|
|
/********** Function prototypes. **********/
|
|
|
|
/* Check whether the given string starts with the given keyword. */
|
|
bool tomoyo_str_starts(char **src, const char *find);
|
|
/* Get tomoyo_realpath() of current process. */
|
|
const char *tomoyo_get_exe(void);
|
|
/* Format string. */
|
|
void tomoyo_normalize_line(unsigned char *buffer);
|
|
/* Print warning or error message on console. */
|
|
void tomoyo_warn_log(struct tomoyo_request_info *r, const char *fmt, ...)
|
|
__attribute__ ((format(printf, 2, 3)));
|
|
/* Check all profiles currently assigned to domains are defined. */
|
|
void tomoyo_check_profile(void);
|
|
/* Open operation for /sys/kernel/security/tomoyo/ interface. */
|
|
int tomoyo_open_control(const u8 type, struct file *file);
|
|
/* Close /sys/kernel/security/tomoyo/ interface. */
|
|
int tomoyo_close_control(struct file *file);
|
|
/* Poll operation for /sys/kernel/security/tomoyo/ interface. */
|
|
int tomoyo_poll_control(struct file *file, poll_table *wait);
|
|
/* Read operation for /sys/kernel/security/tomoyo/ interface. */
|
|
int tomoyo_read_control(struct file *file, char __user *buffer,
|
|
const int buffer_len);
|
|
/* Write operation for /sys/kernel/security/tomoyo/ interface. */
|
|
int tomoyo_write_control(struct file *file, const char __user *buffer,
|
|
const int buffer_len);
|
|
/* Check whether the domain has too many ACL entries to hold. */
|
|
bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
|
|
/* Print out of memory warning message. */
|
|
void tomoyo_warn_oom(const char *function);
|
|
/* Check whether the given name matches the given name_union. */
|
|
const struct tomoyo_path_info *
|
|
tomoyo_compare_name_union(const struct tomoyo_path_info *name,
|
|
const struct tomoyo_name_union *ptr);
|
|
/* Check whether the given number matches the given number_union. */
|
|
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);
|
|
void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...)
|
|
__attribute__ ((format(printf, 2, 3)));
|
|
/* Check whether the domainname is correct. */
|
|
bool tomoyo_correct_domain(const unsigned char *domainname);
|
|
/* Check whether the token is correct. */
|
|
bool tomoyo_correct_path(const char *filename);
|
|
bool tomoyo_correct_word(const char *string);
|
|
/* Check whether the token can be a domainname. */
|
|
bool tomoyo_domain_def(const unsigned char *buffer);
|
|
bool tomoyo_parse_name_union(const char *filename,
|
|
struct tomoyo_name_union *ptr);
|
|
/* Check whether the given filename matches the given path_group. */
|
|
const struct tomoyo_path_info *
|
|
tomoyo_path_matches_group(const struct tomoyo_path_info *pathname,
|
|
const struct tomoyo_group *group);
|
|
/* 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_group *group);
|
|
/* Check whether the given filename matches the given pattern. */
|
|
bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
|
|
const struct tomoyo_path_info *pattern);
|
|
|
|
bool tomoyo_parse_number_union(char *data, struct tomoyo_number_union *num);
|
|
/* Tokenize a line. */
|
|
bool tomoyo_tokenize(char *buffer, char *w[], size_t size);
|
|
/* Write domain policy violation warning message to console? */
|
|
bool tomoyo_verbose_mode(const struct tomoyo_domain_info *domain);
|
|
/* Fill "struct tomoyo_request_info". */
|
|
int tomoyo_init_request_info(struct tomoyo_request_info *r,
|
|
struct tomoyo_domain_info *domain,
|
|
const u8 index);
|
|
/* Check permission for mount operation. */
|
|
int tomoyo_mount_permission(char *dev_name, struct path *path, char *type,
|
|
unsigned long flags, void *data_page);
|
|
/* Create "aggregator" entry in exception policy. */
|
|
int tomoyo_write_aggregator(char *data, const bool is_delete);
|
|
int tomoyo_write_transition_control(char *data, const bool is_delete,
|
|
const u8 type);
|
|
/*
|
|
* Create "allow_execute", "allow_read", "allow_write", "allow_append",
|
|
* "allow_create", "allow_unlink", "allow_mkdir", "allow_rmdir",
|
|
* "allow_mkfifo", "allow_mksock", "allow_mkblock", "allow_mkchar",
|
|
* "allow_truncate", "allow_symlink", "allow_rename" and "allow_link" entry
|
|
* in domain policy.
|
|
*/
|
|
int tomoyo_write_file(char *data, struct tomoyo_domain_info *domain,
|
|
const bool is_delete);
|
|
/* Create "allow_mount" entry in domain policy. */
|
|
int tomoyo_write_mount(char *data, struct tomoyo_domain_info *domain,
|
|
const bool is_delete);
|
|
/* Create "path_group"/"number_group" entry in exception policy. */
|
|
int tomoyo_write_group(char *data, const bool is_delete, const u8 type);
|
|
int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
|
|
__attribute__ ((format(printf, 2, 3)));
|
|
/* Find a domain by the given name. */
|
|
struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
|
|
/* Find or create a domain by the given name. */
|
|
struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
|
|
const u8 profile);
|
|
struct tomoyo_profile *tomoyo_profile(const u8 profile);
|
|
/*
|
|
* Allocate memory for "struct tomoyo_path_group"/"struct tomoyo_number_group".
|
|
*/
|
|
struct tomoyo_group *tomoyo_get_group(const char *group_name, const u8 type);
|
|
|
|
/* Check mode for specified functionality. */
|
|
unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
|
|
const u8 index);
|
|
/* Fill in "struct tomoyo_path_info" members. */
|
|
void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
|
|
/* Run policy loader when /sbin/init starts. */
|
|
void tomoyo_load_policy(const char *filename);
|
|
|
|
void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
|
|
|
|
/* Convert binary string to ascii string. */
|
|
char *tomoyo_encode(const char *str);
|
|
|
|
/*
|
|
* Returns realpath(3) of the given pathname except that
|
|
* ignores chroot'ed root and does not follow the final symlink.
|
|
*/
|
|
char *tomoyo_realpath_nofollow(const char *pathname);
|
|
/*
|
|
* Returns realpath(3) of the given pathname except that
|
|
* ignores chroot'ed root and the pathname is already solved.
|
|
*/
|
|
char *tomoyo_realpath_from_path(struct path *path);
|
|
|
|
/* Check memory quota. */
|
|
bool tomoyo_memory_ok(void *ptr);
|
|
void *tomoyo_commit_ok(void *data, const unsigned int size);
|
|
|
|
/*
|
|
* Keep the given name on the RAM.
|
|
* The RAM is shared, so NEVER try to modify or kfree() the returned name.
|
|
*/
|
|
const struct tomoyo_path_info *tomoyo_get_name(const char *name);
|
|
|
|
/* Check for memory usage. */
|
|
void tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);
|
|
|
|
/* Set memory quota. */
|
|
int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head);
|
|
|
|
/* Initialize mm related code. */
|
|
void __init tomoyo_mm_init(void);
|
|
int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
|
|
const struct tomoyo_path_info *filename);
|
|
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
|
|
struct path *path, const int flag);
|
|
int tomoyo_path_number_perm(const u8 operation, struct path *path,
|
|
unsigned long number);
|
|
int tomoyo_mkdev_perm(const u8 operation, struct path *path,
|
|
const unsigned int mode, unsigned int dev);
|
|
int tomoyo_path_perm(const u8 operation, struct path *path);
|
|
int tomoyo_path2_perm(const u8 operation, struct path *path1,
|
|
struct path *path2);
|
|
int tomoyo_find_next_domain(struct linux_binprm *bprm);
|
|
|
|
void tomoyo_print_ulong(char *buffer, const int buffer_len,
|
|
const unsigned long value, const u8 type);
|
|
|
|
/* Drop refcount on tomoyo_name_union. */
|
|
void tomoyo_put_name_union(struct tomoyo_name_union *ptr);
|
|
|
|
/* Run garbage collector. */
|
|
void tomoyo_run_gc(void);
|
|
|
|
void tomoyo_memory_free(void *ptr);
|
|
|
|
int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
|
|
bool is_delete, struct tomoyo_domain_info *domain,
|
|
bool (*check_duplicate) (const struct tomoyo_acl_info
|
|
*,
|
|
const struct tomoyo_acl_info
|
|
*),
|
|
bool (*merge_duplicate) (struct tomoyo_acl_info *,
|
|
struct tomoyo_acl_info *,
|
|
const bool));
|
|
int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
|
|
bool is_delete, struct list_head *list,
|
|
bool (*check_duplicate) (const struct tomoyo_acl_head
|
|
*,
|
|
const struct tomoyo_acl_head
|
|
*));
|
|
void tomoyo_check_acl(struct tomoyo_request_info *r,
|
|
bool (*check_entry) (struct tomoyo_request_info *,
|
|
const struct tomoyo_acl_info *));
|
|
|
|
/********** External variable definitions. **********/
|
|
|
|
/* Lock for GC. */
|
|
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. */
|
|
extern struct mutex tomoyo_policy_lock;
|
|
|
|
/* Has /sbin/init started? */
|
|
extern bool tomoyo_policy_loaded;
|
|
|
|
/* The kernel's domain. */
|
|
extern struct tomoyo_domain_info tomoyo_kernel_domain;
|
|
|
|
extern const char *tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
|
|
extern const char *tomoyo_mkdev_keyword[TOMOYO_MAX_MKDEV_OPERATION];
|
|
extern const char *tomoyo_path2_keyword[TOMOYO_MAX_PATH2_OPERATION];
|
|
extern const char *tomoyo_path_number_keyword[TOMOYO_MAX_PATH_NUMBER_OPERATION];
|
|
|
|
extern unsigned int tomoyo_quota_for_query;
|
|
extern unsigned int tomoyo_query_memory_size;
|
|
|
|
/********** Inlined functions. **********/
|
|
|
|
static inline int tomoyo_read_lock(void)
|
|
{
|
|
return srcu_read_lock(&tomoyo_ss);
|
|
}
|
|
|
|
static inline void tomoyo_read_unlock(int idx)
|
|
{
|
|
srcu_read_unlock(&tomoyo_ss, idx);
|
|
}
|
|
|
|
/* strcmp() for "struct tomoyo_path_info" structure. */
|
|
static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a,
|
|
const struct tomoyo_path_info *b)
|
|
{
|
|
return a->hash != b->hash || strcmp(a->name, b->name);
|
|
}
|
|
|
|
/**
|
|
* tomoyo_valid - Check whether the character is a valid char.
|
|
*
|
|
* @c: The character to check.
|
|
*
|
|
* Returns true if @c is a valid character, false otherwise.
|
|
*/
|
|
static inline bool tomoyo_valid(const unsigned char c)
|
|
{
|
|
return c > ' ' && c < 127;
|
|
}
|
|
|
|
/**
|
|
* tomoyo_invalid - Check whether the character is an invalid char.
|
|
*
|
|
* @c: The character to check.
|
|
*
|
|
* Returns true if @c is an invalid character, false otherwise.
|
|
*/
|
|
static inline bool tomoyo_invalid(const unsigned char c)
|
|
{
|
|
return c && (c <= ' ' || c >= 127);
|
|
}
|
|
|
|
static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
|
|
{
|
|
if (name) {
|
|
struct tomoyo_name *ptr =
|
|
container_of(name, typeof(*ptr), entry);
|
|
atomic_dec(&ptr->users);
|
|
}
|
|
}
|
|
|
|
static inline void tomoyo_put_group(struct tomoyo_group *group)
|
|
{
|
|
if (group)
|
|
atomic_dec(&group->users);
|
|
}
|
|
|
|
static inline struct tomoyo_domain_info *tomoyo_domain(void)
|
|
{
|
|
return current_cred()->security;
|
|
}
|
|
|
|
static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
|
|
*task)
|
|
{
|
|
return task_cred_xxx(task, security);
|
|
}
|
|
|
|
static inline bool tomoyo_same_acl_head(const struct tomoyo_acl_info *p1,
|
|
const struct tomoyo_acl_info *p2)
|
|
{
|
|
return p1->type == p2->type;
|
|
}
|
|
|
|
static inline bool tomoyo_same_name_union
|
|
(const struct tomoyo_name_union *p1, const struct tomoyo_name_union *p2)
|
|
{
|
|
return p1->filename == p2->filename && p1->group == p2->group &&
|
|
p1->is_group == p2->is_group;
|
|
}
|
|
|
|
static inline bool tomoyo_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;
|
|
}
|
|
|
|
/**
|
|
* list_for_each_cookie - iterate over a list with cookie.
|
|
* @pos: the &struct list_head to use as a loop cursor.
|
|
* @head: the head for your list.
|
|
*/
|
|
#define list_for_each_cookie(pos, head) \
|
|
if (!pos) \
|
|
pos = srcu_dereference((head)->next, &tomoyo_ss); \
|
|
for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
|
|
|
|
#endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */
|