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TOMOYO: Merge headers.

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Gather structures and constants scattered around security/tomoyo/ directory.
This is for preparation for adding garbage collector since garbage collector
needs to know structures and constants which TOMOYO uses.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Tetsuo Handa 2010-02-11 09:42:40 +09:00 committed by James Morris
parent bf24fb016c
commit 76bb0895d0
8 changed files with 351 additions and 397 deletions
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23
security/tomoyo/common.c
View File

@ -13,8 +13,6 @@
#include <linux/security.h>
#include <linux/hardirq.h>
#include "common.h"
#include "realpath.h"
#include "tomoyo.h"
/* Lock for protecting policy. */
DEFINE_MUTEX(tomoyo_policy_lock);
@ -1039,27 +1037,6 @@ static int tomoyo_read_profile(struct tomoyo_io_buffer *head)
return 0;
}
/*
* tomoyo_policy_manager_entry 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) "list" which is linked to tomoyo_policy_manager_list .
* (2) "manager" is a domainname or a program's pathname.
* (3) "is_domain" is a bool which is true if "manager" is a domainname, false
* otherwise.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_policy_manager_entry {
struct list_head list;
/* A path to program or a domainname. */
const struct tomoyo_path_info *manager;
bool is_domain; /* True if manager is a domainname. */
bool is_deleted; /* True if this entry is deleted. */
};
/*
* tomoyo_policy_manager_list is used for holding list of domainnames or
* programs which are permitted to modify configuration via

411
security/tomoyo/common.h
View File

@ -1,12 +1,9 @@
/*
* security/tomoyo/common.h
*
* Common functions for TOMOYO.
*
* Copyright (C) 2005-2009 NTT DATA CORPORATION
*
* Version: 2.2.0 2009/04/01
* Header file for TOMOYO.
*
* Copyright (C) 2005-2010 NTT DATA CORPORATION
*/
#ifndef _SECURITY_TOMOYO_COMMON_H
@ -22,9 +19,110 @@
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/list.h>
#include <linux/cred.h>
struct linux_binprm;
struct dentry;
struct vfsmount;
/********** 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)
/*
* This is the max length of a token.
*
* A token consists of only ASCII printable characters.
* Non printable characters in a token is represented in \ooo style
* octal string. Thus, \ itself is represented as \\.
*/
#define TOMOYO_MAX_PATHNAME_LEN 4000
/* Profile number is an integer between 0 and 255. */
#define TOMOYO_MAX_PROFILES 256
/* Keywords for ACLs. */
#define TOMOYO_KEYWORD_ALIAS "alias "
#define TOMOYO_KEYWORD_ALLOW_READ "allow_read "
#define TOMOYO_KEYWORD_DELETE "delete "
#define TOMOYO_KEYWORD_DENY_REWRITE "deny_rewrite "
#define TOMOYO_KEYWORD_FILE_PATTERN "file_pattern "
#define TOMOYO_KEYWORD_INITIALIZE_DOMAIN "initialize_domain "
#define TOMOYO_KEYWORD_KEEP_DOMAIN "keep_domain "
#define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain "
#define TOMOYO_KEYWORD_NO_KEEP_DOMAIN "no_keep_domain "
#define TOMOYO_KEYWORD_SELECT "select "
#define TOMOYO_KEYWORD_USE_PROFILE "use_profile "
#define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "ignore_global_allow_read"
/* A domain definition starts with <kernel>. */
#define TOMOYO_ROOT_NAME "<kernel>"
#define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1)
/* Index numbers for Access Controls. */
#define TOMOYO_MAC_FOR_FILE 0 /* domain_policy.conf */
#define TOMOYO_MAX_ACCEPT_ENTRY 1
#define TOMOYO_VERBOSE 2
#define TOMOYO_MAX_CONTROL_INDEX 3
/* Index numbers for Access Controls. */
#define TOMOYO_TYPE_SINGLE_PATH_ACL 0
#define TOMOYO_TYPE_DOUBLE_PATH_ACL 1
/* Index numbers for File Controls. */
/*
* TYPE_READ_WRITE_ACL is special. TYPE_READ_WRITE_ACL is automatically set
* if both TYPE_READ_ACL and TYPE_WRITE_ACL are set. Both TYPE_READ_ACL and
* TYPE_WRITE_ACL are automatically set if TYPE_READ_WRITE_ACL is set.
* TYPE_READ_WRITE_ACL is automatically cleared if either TYPE_READ_ACL or
* TYPE_WRITE_ACL is cleared. Both TYPE_READ_ACL and TYPE_WRITE_ACL are
* automatically cleared if TYPE_READ_WRITE_ACL is cleared.
*/
#define TOMOYO_TYPE_READ_WRITE_ACL 0
#define TOMOYO_TYPE_EXECUTE_ACL 1
#define TOMOYO_TYPE_READ_ACL 2
#define TOMOYO_TYPE_WRITE_ACL 3
#define TOMOYO_TYPE_CREATE_ACL 4
#define TOMOYO_TYPE_UNLINK_ACL 5
#define TOMOYO_TYPE_MKDIR_ACL 6
#define TOMOYO_TYPE_RMDIR_ACL 7
#define TOMOYO_TYPE_MKFIFO_ACL 8
#define TOMOYO_TYPE_MKSOCK_ACL 9
#define TOMOYO_TYPE_MKBLOCK_ACL 10
#define TOMOYO_TYPE_MKCHAR_ACL 11
#define TOMOYO_TYPE_TRUNCATE_ACL 12
#define TOMOYO_TYPE_SYMLINK_ACL 13
#define TOMOYO_TYPE_REWRITE_ACL 14
#define TOMOYO_TYPE_IOCTL_ACL 15
#define TOMOYO_TYPE_CHMOD_ACL 16
#define TOMOYO_TYPE_CHOWN_ACL 17
#define TOMOYO_TYPE_CHGRP_ACL 18
#define TOMOYO_TYPE_CHROOT_ACL 19
#define TOMOYO_TYPE_MOUNT_ACL 20
#define TOMOYO_TYPE_UMOUNT_ACL 21
#define TOMOYO_MAX_SINGLE_PATH_OPERATION 22
#define TOMOYO_TYPE_LINK_ACL 0
#define TOMOYO_TYPE_RENAME_ACL 1
#define TOMOYO_TYPE_PIVOT_ROOT_ACL 2
#define TOMOYO_MAX_DOUBLE_PATH_OPERATION 3
#define TOMOYO_DOMAINPOLICY 0
#define TOMOYO_EXCEPTIONPOLICY 1
#define TOMOYO_DOMAIN_STATUS 2
#define TOMOYO_PROCESS_STATUS 3
#define TOMOYO_MEMINFO 4
#define TOMOYO_SELFDOMAIN 5
#define TOMOYO_VERSION 6
#define TOMOYO_PROFILE 7
#define TOMOYO_MANAGER 8
/********** Structure definitions. **********/
/*
* tomoyo_page_buffer is a structure which is used for holding a pathname
@ -66,13 +164,14 @@ struct tomoyo_path_info {
};
/*
* This is the max length of a token.
*
* A token consists of only ASCII printable characters.
* Non printable characters in a token is represented in \ooo style
* octal string. Thus, \ itself is represented as \\.
* tomoyo_name_entry is a structure which is used for linking
* "struct tomoyo_path_info" into tomoyo_name_list .
*/
#define TOMOYO_MAX_PATHNAME_LEN 4000
struct tomoyo_name_entry {
struct list_head list;
atomic_t users;
struct tomoyo_path_info entry;
};
/*
* tomoyo_path_info_with_data is a structure which is used for holding a
@ -155,9 +254,6 @@ struct tomoyo_domain_info {
bool transition_failed; /* Domain transition failed flag. */
};
/* Profile number is an integer between 0 and 255. */
#define TOMOYO_MAX_PROFILES 256
/*
* tomoyo_single_path_acl_record is a structure which is used for holding an
* entry with one pathname operation (e.g. open(), mkdir()).
@ -204,29 +300,6 @@ struct tomoyo_double_path_acl_record {
const struct tomoyo_path_info *filename2;
};
/* Keywords for ACLs. */
#define TOMOYO_KEYWORD_ALIAS "alias "
#define TOMOYO_KEYWORD_ALLOW_READ "allow_read "
#define TOMOYO_KEYWORD_DELETE "delete "
#define TOMOYO_KEYWORD_DENY_REWRITE "deny_rewrite "
#define TOMOYO_KEYWORD_FILE_PATTERN "file_pattern "
#define TOMOYO_KEYWORD_INITIALIZE_DOMAIN "initialize_domain "
#define TOMOYO_KEYWORD_KEEP_DOMAIN "keep_domain "
#define TOMOYO_KEYWORD_NO_INITIALIZE_DOMAIN "no_initialize_domain "
#define TOMOYO_KEYWORD_NO_KEEP_DOMAIN "no_keep_domain "
#define TOMOYO_KEYWORD_SELECT "select "
#define TOMOYO_KEYWORD_USE_PROFILE "use_profile "
#define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "ignore_global_allow_read"
/* A domain definition starts with <kernel>. */
#define TOMOYO_ROOT_NAME "<kernel>"
#define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1)
/* Index numbers for Access Controls. */
#define TOMOYO_MAC_FOR_FILE 0 /* domain_policy.conf */
#define TOMOYO_MAX_ACCEPT_ENTRY 1
#define TOMOYO_VERBOSE 2
#define TOMOYO_MAX_CONTROL_INDEX 3
/*
* tomoyo_io_buffer is a structure which is used for reading and modifying
* configuration via /sys/kernel/security/tomoyo/ interface.
@ -285,6 +358,149 @@ struct tomoyo_io_buffer {
int writebuf_size;
};
/*
* tomoyo_globally_readable_file_entry is a structure which is used for holding
* "allow_read" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_globally_readable_list .
* (2) "filename" is a pathname which is allowed to open(O_RDONLY).
* (3) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_globally_readable_file_entry {
struct list_head list;
const struct tomoyo_path_info *filename;
bool is_deleted;
};
/*
* tomoyo_pattern_entry is a structure which is used for holding
* "tomoyo_pattern_list" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_pattern_list .
* (2) "pattern" is a pathname pattern which is used for converting pathnames
* to pathname patterns during learning mode.
* (3) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_pattern_entry {
struct list_head list;
const struct tomoyo_path_info *pattern;
bool is_deleted;
};
/*
* tomoyo_no_rewrite_entry is a structure which is used for holding
* "deny_rewrite" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_no_rewrite_list .
* (2) "pattern" is a pathname which is by default not permitted to modify
* already existing content.
* (3) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_no_rewrite_entry {
struct list_head list;
const struct tomoyo_path_info *pattern;
bool is_deleted;
};
/*
* tomoyo_domain_initializer_entry is a structure which is used for holding
* "initialize_domain" and "no_initialize_domain" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_domain_initializer_list .
* (2) "domainname" which is "a domainname" or "the last component of a
* domainname". This field is NULL if "from" clause is not specified.
* (3) "program" which is a program's pathname.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
* (5) "is_not" is a bool which is true if "no_initialize_domain", false
* otherwise.
* (6) "is_last_name" is a bool which is true if "domainname" is "the last
* component of a domainname", false otherwise.
*/
struct tomoyo_domain_initializer_entry {
struct list_head list;
const struct tomoyo_path_info *domainname; /* This may be NULL */
const struct tomoyo_path_info *program;
bool is_deleted;
bool is_not; /* True if this entry is "no_initialize_domain". */
/* True if the domainname is tomoyo_get_last_name(). */
bool is_last_name;
};
/*
* tomoyo_domain_keeper_entry is a structure which is used for holding
* "keep_domain" and "no_keep_domain" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_domain_keeper_list .
* (2) "domainname" which is "a domainname" or "the last component of a
* domainname".
* (3) "program" which is a program's pathname.
* This field is NULL if "from" clause is not specified.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
* (5) "is_not" is a bool which is true if "no_initialize_domain", false
* otherwise.
* (6) "is_last_name" is a bool which is true if "domainname" is "the last
* component of a domainname", false otherwise.
*/
struct tomoyo_domain_keeper_entry {
struct list_head list;
const struct tomoyo_path_info *domainname;
const struct tomoyo_path_info *program; /* This may be NULL */
bool is_deleted;
bool is_not; /* True if this entry is "no_keep_domain". */
/* True if the domainname is tomoyo_get_last_name(). */
bool is_last_name;
};
/*
* tomoyo_alias_entry is a structure which is used for holding "alias" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_alias_list .
* (2) "original_name" which is a dereferenced pathname.
* (3) "aliased_name" which is a symlink's pathname.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_alias_entry {
struct list_head list;
const struct tomoyo_path_info *original_name;
const struct tomoyo_path_info *aliased_name;
bool is_deleted;
};
/*
* tomoyo_policy_manager_entry 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) "list" which is linked to tomoyo_policy_manager_list .
* (2) "manager" is a domainname or a program's pathname.
* (3) "is_domain" is a bool which is true if "manager" is a domainname, false
* otherwise.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_policy_manager_entry {
struct list_head list;
/* A path to program or a domainname. */
const struct tomoyo_path_info *manager;
bool is_domain; /* True if manager is a domainname. */
bool is_deleted; /* True if this entry is deleted. */
};
/********** Function prototypes. **********/
/* Check whether the domain has too many ACL entries to hold. */
bool tomoyo_domain_quota_is_ok(struct tomoyo_domain_info * const domain);
/* Transactional sprintf() for policy dump. */
@ -367,6 +583,85 @@ void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
/* Run policy loader when /sbin/init starts. */
void tomoyo_load_policy(const char *filename);
/* Convert binary string to ascii string. */
int tomoyo_encode(char *buffer, int buflen, const char *str);
/* Returns realpath(3) of the given pathname but ignores chroot'ed root. */
int tomoyo_realpath_from_path2(struct path *path, char *newname,
int newname_len);
/*
* Returns realpath(3) of the given pathname but ignores chroot'ed root.
* These functions use kzalloc(), so the caller must call kfree()
* if these functions didn't return NULL.
*/
char *tomoyo_realpath(const char *pathname);
/*
* Same with tomoyo_realpath() except that it doesn't follow the final symlink.
*/
char *tomoyo_realpath_nofollow(const char *pathname);
/* Same with tomoyo_realpath() except that the pathname is already solved. */
char *tomoyo_realpath_from_path(struct path *path);
/* Check memory quota. */
bool tomoyo_memory_ok(void *ptr);
/*
* 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. */
int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);
/* Set memory quota. */
int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head);
/* Initialize realpath related code. */
void __init tomoyo_realpath_init(void);
int tomoyo_check_exec_perm(struct tomoyo_domain_info *domain,
const struct tomoyo_path_info *filename);
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
struct path *path, const int flag);
int tomoyo_check_1path_perm(struct tomoyo_domain_info *domain,
const u8 operation, struct path *path);
int tomoyo_check_2path_perm(struct tomoyo_domain_info *domain,
const u8 operation, struct path *path1,
struct path *path2);
int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain,
struct file *filp);
int tomoyo_find_next_domain(struct linux_binprm *bprm);
/********** 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;
/* 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;
/********** 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)
@ -398,17 +693,25 @@ static inline bool tomoyo_is_invalid(const unsigned char c)
return c && (c <= ' ' || c >= 127);
}
/* The list for "struct tomoyo_domain_info". */
extern struct list_head tomoyo_domain_list;
static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
{
if (name) {
struct tomoyo_name_entry *ptr =
container_of(name, struct tomoyo_name_entry, entry);
atomic_dec(&ptr->users);
}
}
/* Lock for protecting policy. */
extern struct mutex tomoyo_policy_lock;
static inline struct tomoyo_domain_info *tomoyo_domain(void)
{
return current_cred()->security;
}
/* Has /sbin/init started? */
extern bool tomoyo_policy_loaded;
/* The kernel's domain. */
extern struct tomoyo_domain_info tomoyo_kernel_domain;
static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
*task)
{
return task_cred_xxx(task, security);
}
/**
* list_for_each_cookie - iterate over a list with cookie.
@ -428,16 +731,4 @@ extern struct tomoyo_domain_info tomoyo_kernel_domain;
prefetch(pos->next), pos != (head) || ((cookie) = NULL); \
(cookie) = pos, pos = rcu_dereference(pos->next))
extern struct srcu_struct tomoyo_ss;
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);
}
#endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */

72
security/tomoyo/domain.c
View File

@ -10,8 +10,6 @@
*/
#include "common.h"
#include "tomoyo.h"
#include "realpath.h"
#include <linux/binfmts.h>
/* Variables definitions.*/
@ -59,76 +57,6 @@ struct tomoyo_domain_info tomoyo_kernel_domain;
*/
LIST_HEAD(tomoyo_domain_list);
/*
* tomoyo_domain_initializer_entry is a structure which is used for holding
* "initialize_domain" and "no_initialize_domain" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_domain_initializer_list .
* (2) "domainname" which is "a domainname" or "the last component of a
* domainname". This field is NULL if "from" clause is not specified.
* (3) "program" which is a program's pathname.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
* (5) "is_not" is a bool which is true if "no_initialize_domain", false
* otherwise.
* (6) "is_last_name" is a bool which is true if "domainname" is "the last
* component of a domainname", false otherwise.
*/
struct tomoyo_domain_initializer_entry {
struct list_head list;
const struct tomoyo_path_info *domainname; /* This may be NULL */
const struct tomoyo_path_info *program;
bool is_deleted;
bool is_not; /* True if this entry is "no_initialize_domain". */
/* True if the domainname is tomoyo_get_last_name(). */
bool is_last_name;
};
/*
* tomoyo_domain_keeper_entry is a structure which is used for holding
* "keep_domain" and "no_keep_domain" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_domain_keeper_list .
* (2) "domainname" which is "a domainname" or "the last component of a
* domainname".
* (3) "program" which is a program's pathname.
* This field is NULL if "from" clause is not specified.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
* (5) "is_not" is a bool which is true if "no_initialize_domain", false
* otherwise.
* (6) "is_last_name" is a bool which is true if "domainname" is "the last
* component of a domainname", false otherwise.
*/
struct tomoyo_domain_keeper_entry {
struct list_head list;
const struct tomoyo_path_info *domainname;
const struct tomoyo_path_info *program; /* This may be NULL */
bool is_deleted;
bool is_not; /* True if this entry is "no_keep_domain". */
/* True if the domainname is tomoyo_get_last_name(). */
bool is_last_name;
};
/*
* tomoyo_alias_entry is a structure which is used for holding "alias" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_alias_list .
* (2) "original_name" which is a dereferenced pathname.
* (3) "aliased_name" which is a symlink's pathname.
* (4) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_alias_entry {
struct list_head list;
const struct tomoyo_path_info *original_name;
const struct tomoyo_path_info *aliased_name;
bool is_deleted;
};
/**
* tomoyo_get_last_name - Get last component of a domainname.
*

52
security/tomoyo/file.c
View File

@ -10,58 +10,6 @@
*/
#include "common.h"
#include "tomoyo.h"
#include "realpath.h"
/*
* tomoyo_globally_readable_file_entry is a structure which is used for holding
* "allow_read" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_globally_readable_list .
* (2) "filename" is a pathname which is allowed to open(O_RDONLY).
* (3) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_globally_readable_file_entry {
struct list_head list;
const struct tomoyo_path_info *filename;
bool is_deleted;
};
/*
* tomoyo_pattern_entry is a structure which is used for holding
* "tomoyo_pattern_list" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_pattern_list .
* (2) "pattern" is a pathname pattern which is used for converting pathnames
* to pathname patterns during learning mode.
* (3) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_pattern_entry {
struct list_head list;
const struct tomoyo_path_info *pattern;
bool is_deleted;
};
/*
* tomoyo_no_rewrite_entry is a structure which is used for holding
* "deny_rewrite" entries.
* It has following fields.
*
* (1) "list" which is linked to tomoyo_no_rewrite_list .
* (2) "pattern" is a pathname which is by default not permitted to modify
* already existing content.
* (3) "is_deleted" is a bool which is true if marked as deleted, false
* otherwise.
*/
struct tomoyo_no_rewrite_entry {
struct list_head list;
const struct tomoyo_path_info *pattern;
bool is_deleted;
};
/* Keyword array for single path operations. */
static const char *tomoyo_sp_keyword[TOMOYO_MAX_SINGLE_PATH_OPERATION] = {

10
security/tomoyo/realpath.c
View File

@ -15,9 +15,7 @@
#include <linux/fs_struct.h>
#include <linux/hash.h>
#include <linux/magic.h>
#include "common.h"
#include "realpath.h"
/**
* tomoyo_encode: Convert binary string to ascii string.
@ -245,14 +243,6 @@ static unsigned int tomoyo_allocated_memory_for_savename;
/* Quota for holding string data in bytes. */
static unsigned int tomoyo_quota_for_savename;
/*
* 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)
/*
* tomoyo_name_list is used for holding string data used by TOMOYO.
* Since same string data is likely used for multiple times (e.g.

76
security/tomoyo/realpath.h
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@ -1,76 +0,0 @@
/*
* security/tomoyo/realpath.h
*
* Get the canonicalized absolute pathnames. The basis for TOMOYO.
*
* Copyright (C) 2005-2009 NTT DATA CORPORATION
*
* Version: 2.2.0 2009/04/01
*
*/
#ifndef _SECURITY_TOMOYO_REALPATH_H
#define _SECURITY_TOMOYO_REALPATH_H
struct path;
struct tomoyo_path_info;
struct tomoyo_io_buffer;
/* Convert binary string to ascii string. */
int tomoyo_encode(char *buffer, int buflen, const char *str);
/* Returns realpath(3) of the given pathname but ignores chroot'ed root. */
int tomoyo_realpath_from_path2(struct path *path, char *newname,
int newname_len);
/*
* Returns realpath(3) of the given pathname but ignores chroot'ed root.
* These functions use kzalloc(), so the caller must call kfree()
* if these functions didn't return NULL.
*/
char *tomoyo_realpath(const char *pathname);
/*
* Same with tomoyo_realpath() except that it doesn't follow the final symlink.
*/
char *tomoyo_realpath_nofollow(const char *pathname);
/* Same with tomoyo_realpath() except that the pathname is already solved. */
char *tomoyo_realpath_from_path(struct path *path);
/* Check memory quota. */
bool tomoyo_memory_ok(void *ptr);
/*
* 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. */
int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);
/* Set memory quota. */
int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head);
/* Initialize realpath related code. */
void __init tomoyo_realpath_init(void);
/*
* tomoyo_name_entry is a structure which is used for linking
* "struct tomoyo_path_info" into tomoyo_name_list .
*/
struct tomoyo_name_entry {
struct list_head list;
atomic_t users;
struct tomoyo_path_info entry;
};
static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
{
if (name) {
struct tomoyo_name_entry *ptr =
container_of(name, struct tomoyo_name_entry, entry);
atomic_dec(&ptr->users);
}
}
#endif /* !defined(_SECURITY_TOMOYO_REALPATH_H) */

2
security/tomoyo/tomoyo.c
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@ -11,8 +11,6 @@
#include <linux/security.h>
#include "common.h"
#include "tomoyo.h"
#include "realpath.h"
static int tomoyo_cred_alloc_blank(struct cred *new, gfp_t gfp)
{

102
security/tomoyo/tomoyo.h
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@ -1,102 +0,0 @@
/*
* security/tomoyo/tomoyo.h
*
* Implementation of the Domain-Based Mandatory Access Control.
*
* Copyright (C) 2005-2009 NTT DATA CORPORATION
*
* Version: 2.2.0 2009/04/01
*
*/
#ifndef _SECURITY_TOMOYO_TOMOYO_H
#define _SECURITY_TOMOYO_TOMOYO_H
struct tomoyo_path_info;
struct path;
struct inode;
struct linux_binprm;
struct pt_regs;
int tomoyo_check_exec_perm(struct tomoyo_domain_info *domain,
const struct tomoyo_path_info *filename);
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
struct path *path, const int flag);
int tomoyo_check_1path_perm(struct tomoyo_domain_info *domain,
const u8 operation, struct path *path);
int tomoyo_check_2path_perm(struct tomoyo_domain_info *domain,
const u8 operation, struct path *path1,
struct path *path2);
int tomoyo_check_rewrite_permission(struct tomoyo_domain_info *domain,
struct file *filp);
int tomoyo_find_next_domain(struct linux_binprm *bprm);
/* Index numbers for Access Controls. */
#define TOMOYO_TYPE_SINGLE_PATH_ACL 0
#define TOMOYO_TYPE_DOUBLE_PATH_ACL 1
/* Index numbers for File Controls. */
/*
* TYPE_READ_WRITE_ACL is special. TYPE_READ_WRITE_ACL is automatically set
* if both TYPE_READ_ACL and TYPE_WRITE_ACL are set. Both TYPE_READ_ACL and
* TYPE_WRITE_ACL are automatically set if TYPE_READ_WRITE_ACL is set.
* TYPE_READ_WRITE_ACL is automatically cleared if either TYPE_READ_ACL or
* TYPE_WRITE_ACL is cleared. Both TYPE_READ_ACL and TYPE_WRITE_ACL are
* automatically cleared if TYPE_READ_WRITE_ACL is cleared.
*/
#define TOMOYO_TYPE_READ_WRITE_ACL 0
#define TOMOYO_TYPE_EXECUTE_ACL 1
#define TOMOYO_TYPE_READ_ACL 2
#define TOMOYO_TYPE_WRITE_ACL 3
#define TOMOYO_TYPE_CREATE_ACL 4
#define TOMOYO_TYPE_UNLINK_ACL 5
#define TOMOYO_TYPE_MKDIR_ACL 6
#define TOMOYO_TYPE_RMDIR_ACL 7
#define TOMOYO_TYPE_MKFIFO_ACL 8
#define TOMOYO_TYPE_MKSOCK_ACL 9
#define TOMOYO_TYPE_MKBLOCK_ACL 10
#define TOMOYO_TYPE_MKCHAR_ACL 11
#define TOMOYO_TYPE_TRUNCATE_ACL 12
#define TOMOYO_TYPE_SYMLINK_ACL 13
#define TOMOYO_TYPE_REWRITE_ACL 14
#define TOMOYO_TYPE_IOCTL_ACL 15
#define TOMOYO_TYPE_CHMOD_ACL 16
#define TOMOYO_TYPE_CHOWN_ACL 17
#define TOMOYO_TYPE_CHGRP_ACL 18
#define TOMOYO_TYPE_CHROOT_ACL 19
#define TOMOYO_TYPE_MOUNT_ACL 20
#define TOMOYO_TYPE_UMOUNT_ACL 21
#define TOMOYO_MAX_SINGLE_PATH_OPERATION 22
#define TOMOYO_TYPE_LINK_ACL 0
#define TOMOYO_TYPE_RENAME_ACL 1
#define TOMOYO_TYPE_PIVOT_ROOT_ACL 2
#define TOMOYO_MAX_DOUBLE_PATH_OPERATION 3
#define TOMOYO_DOMAINPOLICY 0
#define TOMOYO_EXCEPTIONPOLICY 1
#define TOMOYO_DOMAIN_STATUS 2
#define TOMOYO_PROCESS_STATUS 3
#define TOMOYO_MEMINFO 4
#define TOMOYO_SELFDOMAIN 5
#define TOMOYO_VERSION 6
#define TOMOYO_PROFILE 7
#define TOMOYO_MANAGER 8
extern struct tomoyo_domain_info tomoyo_kernel_domain;
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);
}
#endif /* !defined(_SECURITY_TOMOYO_TOMOYO_H) */