path: root/security/tomoyo/common.h

/*
 * security/tomoyo/common.h
 *
 * Header file for TOMOYO.
 *
 * Copyright (C) 2005-2010  NTT DATA CORPORATION
 */

#ifndef _SECURITY_TOMOYO_COMMON_H
#define _SECURITY_TOMOYO_COMMON_H

#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/file.h>
#include <linux/kmod.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/list.h>
#include <linux/cred.h>
#include <linux/poll.h>
#include <linux/binfmts.h>
#include <linux/highmem.h>

/********** Constants definitions. **********/

/*
 * TOMOYO uses this hash only when appending a string into the string
 * table. Frequency of appending strings is very low. So we don't need
 * large (e.g. 64k) hash size. 256 will be sufficient.
 */
#define TOMOYO_HASH_BITS  8
#define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS)

#define TOMOYO_EXEC_TMPSIZE     4096

/* Profile number is an integer between 0 and 255. */
#define TOMOYO_MAX_PROFILES 256

/* Group number is an integer between 0 and 255. */
#define TOMOYO_MAX_ACL_GROUPS 256

/* Index numbers for "struct tomoyo_condition". */
enum tomoyo_conditions_index {
	TOMOYO_TASK_UID,             /* current_uid()   */
	TOMOYO_TASK_EUID,            /* current_euid()  */
	TOMOYO_TASK_SUID,            /* current_suid()  */
	TOMOYO_TASK_FSUID,           /* current_fsuid() */
	TOMOYO_TASK_GID,             /* current_gid()   */
	TOMOYO_TASK_EGID,            /* current_egid()  */
	TOMOYO_TASK_SGID,            /* current_sgid()  */
	TOMOYO_TASK_FSGID,           /* current_fsgid() */
	TOMOYO_TASK_PID,             /* sys_getpid()   */
	TOMOYO_TASK_PPID,            /* sys_getppid()  */
	TOMOYO_EXEC_ARGC,            /* "struct linux_binprm *"->argc */
	TOMOYO_EXEC_ENVC,            /* "struct linux_binprm *"->envc */
	TOMOYO_TYPE_IS_SOCKET,       /* S_IFSOCK */
	TOMOYO_TYPE_IS_SYMLINK,      /* S_IFLNK */
	TOMOYO_TYPE_IS_FILE,         /* S_IFREG */
	TOMOYO_TYPE_IS_BLOCK_DEV,    /* S_IFBLK */
	TOMOYO_TYPE_IS_DIRECTORY,    /* S_IFDIR */
	TOMOYO_TYPE_IS_CHAR_DEV,     /* S_IFCHR */
	TOMOYO_TYPE_IS_FIFO,         /* S_IFIFO */
	TOMOYO_MODE_SETUID,          /* S_ISUID */
	TOMOYO_MODE_SETGID,          /* S_ISGID */
	TOMOYO_MODE_STICKY,          /* S_ISVTX */
	TOMOYO_MODE_OWNER_READ,      /* S_IRUSR */
	TOMOYO_MODE_OWNER_WRITE,     /* S_IWUSR */
	TOMOYO_MODE_OWNER_EXECUTE,   /* S_IXUSR */
	TOMOYO_MODE_GROUP_READ,      /* S_IRGRP */
	TOMOYO_MODE_GROUP_WRITE,     /* S_IWGRP */
	TOMOYO_MODE_GROUP_EXECUTE,   /* S_IXGRP */
	TOMOYO_MODE_OTHERS_READ,     /* S_IROTH */
	TOMOYO_MODE_OTHERS_WRITE,    /* S_IWOTH */
	TOMOYO_MODE_OTHERS_EXECUTE,  /* S_IXOTH */
	TOMOYO_EXEC_REALPATH,
	TOMOYO_SYMLINK_TARGET,
	TOMOYO_PATH1_UID,
	TOMOYO_PATH1_GID,
	TOMOYO_PATH1_INO,
	TOMOYO_PATH1_MAJOR,
	TOMOYO_PATH1_MINOR,
	TOMOYO_PATH1_PERM,
	TOMOYO_PATH1_TYPE,
	TOMOYO_PATH1_DEV_MAJOR,
	TOMOYO_PATH1_DEV_MINOR,
	TOMOYO_PATH2_UID,
	TOMOYO_PATH2_GID,
	TOMOYO_PATH2_INO,
	TOMOYO_PATH2_MAJOR,
	TOMOYO_PATH2_MINOR,
	TOMOYO_PATH2_PERM,
	TOMOYO_PATH2_TYPE,
	TOMOYO_PATH2_DEV_MAJOR,
	TOMOYO_PATH2_DEV_MINOR,
	TOMOYO_PATH1_PARENT_UID,
	TOMOYO_PATH1_PARENT_GID,
	TOMOYO_PATH1_PARENT_INO,
	TOMOYO_PATH1_PARENT_PERM,
	TOMOYO_PATH2_PARENT_UID,
	TOMOYO_PATH2_PARENT_GID,
	TOMOYO_PATH2_PARENT_INO,
	TOMOYO_PATH2_PARENT_PERM,
	TOMOYO_MAX_CONDITION_KEYWORD,
	TOMOYO_NUMBER_UNION,
	TOMOYO_NAME_UNION,
	TOMOYO_ARGV_ENTRY,
	TOMOYO_ENVP_ENTRY,
};


/* Index numbers for stat(). */
enum tomoyo_path_stat_index {
	/* Do not change this order. */
	TOMOYO_PATH1,
	TOMOYO_PATH1_PARENT,
	TOMOYO_PATH2,
	TOMOYO_PATH2_PARENT,
	TOMOYO_MAX_PATH_STAT
};

/* Index numbers for operation mode. */
enum tomoyo_mode_index {
	TOMOYO_CONFIG_DISABLED,
	TOMOYO_CONFIG_LEARNING,
	TOMOYO_CONFIG_PERMISSIVE,
	TOMOYO_CONFIG_ENFORCING,
	TOMOYO_CONFIG_MAX_MODE,
	TOMOYO_CONFIG_WANT_REJECT_LOG =  64,
	TOMOYO_CONFIG_WANT_GRANT_LOG  = 128,
	TOMOYO_CONFIG_USE_DEFAULT     = 255,
};

/* Index numbers for entry type. */
enum tomoyo_policy_id {
	TOMOYO_ID_GROUP,
	TOMOYO_ID_PATH_GROUP,
	TOMOYO_ID_NUMBER_GROUP,
	TOMOYO_ID_TRANSITION_CONTROL,
	TOMOYO_ID_AGGREGATOR,
	TOMOYO_ID_MANAGER,
	TOMOYO_ID_CONDITION,
	TOMOYO_ID_NAME,
	TOMOYO_ID_ACL,
	TOMOYO_ID_DOMAIN,
	TOMOYO_MAX_POLICY
};

/* Index numbers for domain's attributes. */
enum tomoyo_domain_info_flags_index {
	/* Quota warnning flag.   */
	TOMOYO_DIF_QUOTA_WARNED,
	/*
	 * This domain was unable to create a new domain at
	 * tomoyo_find_next_domain() because the name of the domain to be
	 * created was too long or it could not allocate memory.
	 * More than one process continued execve() without domain transition.
	 */
	TOMOYO_DIF_TRANSITION_FAILED,
	TOMOYO_MAX_DOMAIN_INFO_FLAGS
};

/* Index numbers for group entries. */
enum tomoyo_group_id {
	TOMOYO_PATH_GROUP,
	TOMOYO_NUMBER_GROUP,
	TOMOYO_MAX_GROUP
};

/* Index numbers for type of numeric values. */
enum tomoyo_value_type {
	TOMOYO_VALUE_TYPE_INVALID,
	TOMOYO_VALUE_TYPE_DECIMAL,
	TOMOYO_VALUE_TYPE_OCTAL,
	TOMOYO_VALUE_TYPE_HEXADECIMAL,
};

/* 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