diff options
Diffstat (limited to 'security/tomoyo/common.h')
| -rw-r--r-- | security/tomoyo/common.h | 1197 |
1 files changed, 673 insertions, 524 deletions
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h index 7c66bd89878..f7fbaa66e44 100644 --- a/security/tomoyo/common.h +++ b/security/tomoyo/common.h @@ -21,7 +21,8 @@ #include <linux/list.h> #include <linux/cred.h> #include <linux/poll.h> -struct linux_binprm; +#include <linux/binfmts.h> +#include <linux/highmem.h> /********** Constants definitions. **********/ @@ -38,66 +39,149 @@ struct linux_binprm; /* 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_USE_DEFAULT = 255 + 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_GLOBALLY_READABLE, - TOMOYO_ID_PATTERN, - TOMOYO_ID_NO_REWRITE, 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 }; -/* Keywords for ACLs. */ -#define TOMOYO_KEYWORD_AGGREGATOR "aggregator " -#define TOMOYO_KEYWORD_ALLOW_MOUNT "allow_mount " -#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_PATH_GROUP "path_group " -#define TOMOYO_KEYWORD_NUMBER_GROUP "number_group " -#define TOMOYO_KEYWORD_SELECT "select " -#define TOMOYO_KEYWORD_USE_PROFILE "use_profile " -#define TOMOYO_KEYWORD_IGNORE_GLOBAL_ALLOW_READ "ignore_global_allow_read" -#define TOMOYO_KEYWORD_QUOTA_EXCEEDED "quota_exceeded" -#define TOMOYO_KEYWORD_TRANSITION_FAILED "transition_failed" -/* A domain definition starts with <kernel>. */ -#define TOMOYO_ROOT_NAME "<kernel>" -#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 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_INITIALIZE, TOMOYO_TRANSITION_CONTROL_NO_KEEP, @@ -114,35 +198,29 @@ enum tomoyo_acl_entry_type_index { TOMOYO_TYPE_MOUNT_ACL, }; -/* Index numbers for File Controls. */ - -/* - * TOMOYO_TYPE_READ_WRITE is special. TOMOYO_TYPE_READ_WRITE is automatically - * set if both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are set. - * Both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are automatically set if - * TOMOYO_TYPE_READ_WRITE is set. - * TOMOYO_TYPE_READ_WRITE is automatically cleared if either TOMOYO_TYPE_READ - * or TOMOYO_TYPE_WRITE is cleared. - * Both TOMOYO_TYPE_READ and TOMOYO_TYPE_WRITE are automatically cleared if - * TOMOYO_TYPE_READ_WRITE is cleared. - */ - +/* Index numbers for access controls with one pathname. */ enum tomoyo_path_acl_index { - TOMOYO_TYPE_READ_WRITE, TOMOYO_TYPE_EXECUTE, TOMOYO_TYPE_READ, TOMOYO_TYPE_WRITE, + TOMOYO_TYPE_APPEND, TOMOYO_TYPE_UNLINK, + TOMOYO_TYPE_GETATTR, TOMOYO_TYPE_RMDIR, TOMOYO_TYPE_TRUNCATE, TOMOYO_TYPE_SYMLINK, - TOMOYO_TYPE_REWRITE, TOMOYO_TYPE_CHROOT, TOMOYO_TYPE_UMOUNT, TOMOYO_MAX_PATH_OPERATION }; -#define TOMOYO_RW_MASK ((1 << TOMOYO_TYPE_READ) | (1 << TOMOYO_TYPE_WRITE)) +/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */ +enum tomoyo_memory_stat_type { + TOMOYO_MEMORY_POLICY, + TOMOYO_MEMORY_AUDIT, + TOMOYO_MEMORY_QUERY, + TOMOYO_MAX_MEMORY_STAT +}; enum tomoyo_mkdev_acl_index { TOMOYO_TYPE_MKBLOCK, @@ -150,6 +228,7 @@ enum tomoyo_mkdev_acl_index { TOMOYO_MAX_MKDEV_OPERATION }; +/* Index numbers for access controls with two pathnames. */ enum tomoyo_path2_acl_index { TOMOYO_TYPE_LINK, TOMOYO_TYPE_RENAME, @@ -157,6 +236,7 @@ enum tomoyo_path2_acl_index { TOMOYO_MAX_PATH2_OPERATION }; +/* Index numbers for access controls with one pathname and one number. */ enum tomoyo_path_number_acl_index { TOMOYO_TYPE_CREATE, TOMOYO_TYPE_MKDIR, @@ -169,31 +249,45 @@ enum tomoyo_path_number_acl_index { TOMOYO_MAX_PATH_NUMBER_OPERATION }; +/* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */ enum tomoyo_securityfs_interface_index { TOMOYO_DOMAINPOLICY, TOMOYO_EXCEPTIONPOLICY, - TOMOYO_DOMAIN_STATUS, TOMOYO_PROCESS_STATUS, - TOMOYO_MEMINFO, + TOMOYO_STAT, TOMOYO_SELFDOMAIN, + TOMOYO_AUDIT, TOMOYO_VERSION, TOMOYO_PROFILE, TOMOYO_QUERY, TOMOYO_MANAGER }; +/* Index numbers for special mount operations. */ +enum tomoyo_special_mount { + TOMOYO_MOUNT_BIND, /* mount --bind /source /dest */ + TOMOYO_MOUNT_MOVE, /* mount --move /old /new */ + TOMOYO_MOUNT_REMOUNT, /* mount -o remount /dir */ + TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */ + TOMOYO_MOUNT_MAKE_PRIVATE, /* mount --make-private /dir */ + TOMOYO_MOUNT_MAKE_SLAVE, /* mount --make-slave /dir */ + TOMOYO_MOUNT_MAKE_SHARED, /* mount --make-shared /dir */ + TOMOYO_MAX_SPECIAL_MOUNT +}; + +/* Index numbers for functionality. */ enum tomoyo_mac_index { TOMOYO_MAC_FILE_EXECUTE, TOMOYO_MAC_FILE_OPEN, TOMOYO_MAC_FILE_CREATE, TOMOYO_MAC_FILE_UNLINK, + TOMOYO_MAC_FILE_GETATTR, TOMOYO_MAC_FILE_MKDIR, TOMOYO_MAC_FILE_RMDIR, TOMOYO_MAC_FILE_MKFIFO, TOMOYO_MAC_FILE_MKSOCK, TOMOYO_MAC_FILE_TRUNCATE, TOMOYO_MAC_FILE_SYMLINK, - TOMOYO_MAC_FILE_REWRITE, TOMOYO_MAC_FILE_MKBLOCK, TOMOYO_MAC_FILE_MKCHAR, TOMOYO_MAC_FILE_LINK, @@ -209,38 +303,66 @@ enum tomoyo_mac_index { TOMOYO_MAX_MAC_INDEX }; +/* Index numbers for category of functionality. */ enum tomoyo_mac_category_index { TOMOYO_MAC_CATEGORY_FILE, TOMOYO_MAX_MAC_CATEGORY_INDEX }; -#define TOMOYO_RETRY_REQUEST 1 /* Retry this request. */ - -/********** Structure definitions. **********/ - /* - * tomoyo_acl_head is a structure which is used for holding elements not in - * domain policy. - * It has following fields. + * Retry this request. Returned by tomoyo_supervisor() if policy violation has + * occurred in enforcing mode and the userspace daemon decided to retry. * - * (1) "list" which is linked to tomoyo_policy_list[] . - * (2) "is_deleted" is a bool which is true if marked as deleted, false - * otherwise. + * We must choose a positive value in order to distinguish "granted" (which is + * 0) and "rejected" (which is a negative value) and "retry". */ +#define TOMOYO_RETRY_REQUEST 1 + +/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */ +enum tomoyo_policy_stat_type { + /* Do not change this order. */ + TOMOYO_STAT_POLICY_UPDATES, + TOMOYO_STAT_POLICY_LEARNING, /* == TOMOYO_CONFIG_LEARNING */ + TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */ + TOMOYO_STAT_POLICY_ENFORCING, /* == TOMOYO_CONFIG_ENFORCING */ + TOMOYO_MAX_POLICY_STAT +}; + +/* Index numbers for profile's PREFERENCE values. */ +enum tomoyo_pref_index { + TOMOYO_PREF_MAX_AUDIT_LOG, + TOMOYO_PREF_MAX_LEARNING_ENTRY, + TOMOYO_MAX_PREF +}; + +/********** Structure definitions. **********/ + +/* Common header for holding ACL entries. */ struct tomoyo_acl_head { struct list_head list; bool is_deleted; } __packed; -/* - * tomoyo_request_info is a structure which is used for holding - * - * (1) Domain information of current process. - * (2) How many retries are made for this request. - * (3) Profile number used for this request. - * (4) Access control mode of the profile. - */ +/* Common header for shared entries. */ +struct tomoyo_shared_acl_head { + struct list_head list; + atomic_t users; +} __packed; + +struct tomoyo_policy_namespace; + +/* Structure for request info. */ struct tomoyo_request_info { + /* + * For holding parameters specific to operations which deal files. + * NULL if not dealing files. + */ + struct tomoyo_obj_info *obj; + /* + * For holding parameters specific to execve() request. + * NULL if not dealing do_execve(). + */ + struct tomoyo_execve *ee; struct tomoyo_domain_info *domain; /* For holding parameters. */ union { @@ -248,11 +370,13 @@ struct tomoyo_request_info { const struct tomoyo_path_info *filename; /* For using wildcards at tomoyo_find_next_domain(). */ const struct tomoyo_path_info *matched_path; + /* One of values in "enum tomoyo_path_acl_index". */ u8 operation; } path; struct { const struct tomoyo_path_info *filename1; const struct tomoyo_path_info *filename2; + /* One of values in "enum tomoyo_path2_acl_index". */ u8 operation; } path2; struct { @@ -260,11 +384,16 @@ struct tomoyo_request_info { unsigned int mode; unsigned int major; unsigned int minor; + /* One of values in "enum tomoyo_mkdev_acl_index". */ u8 operation; } mkdev; struct { const struct tomoyo_path_info *filename; unsigned long number; + /* + * One of values in + * "enum tomoyo_path_number_acl_index". + */ u8 operation; } path_number; struct { @@ -283,26 +412,7 @@ struct tomoyo_request_info { u8 type; }; -/* - * tomoyo_path_info is a structure which is used for holding a string data - * used by TOMOYO. - * This structure has several fields for supporting pattern matching. - * - * (1) "name" is the '\0' terminated string data. - * (2) "hash" is full_name_hash(name, strlen(name)). - * This allows tomoyo_pathcmp() to compare by hash before actually compare - * using strcmp(). - * (3) "const_len" is the length of the initial segment of "name" which - * consists entirely of non wildcard characters. In other words, the length - * which we can compare two strings using strncmp(). - * (4) "is_dir" is a bool which is true if "name" ends with "/", - * false otherwise. - * TOMOYO distinguishes directory and non-directory. A directory ends with - * "/" and non-directory does not end with "/". - * (5) "is_patterned" is a bool which is true if "name" contains wildcard - * characters, false otherwise. This allows TOMOYO to use "hash" and - * strcmp() for string comparison if "is_patterned" is false. - */ +/* Structure for holding a token. */ struct tomoyo_path_info { const char *name; u32 hash; /* = full_name_hash(name, strlen(name)) */ @@ -311,36 +421,32 @@ struct tomoyo_path_info { bool is_patterned; /* = tomoyo_path_contains_pattern(name) */ }; -/* - * tomoyo_name is a structure which is used for linking - * "struct tomoyo_path_info" into tomoyo_name_list . - */ +/* Structure for holding string data. */ struct tomoyo_name { - struct list_head list; - atomic_t users; + struct tomoyo_shared_acl_head head; struct tomoyo_path_info entry; }; +/* Structure for holding a word. */ struct tomoyo_name_union { + /* Either @filename or @group is NULL. */ const struct tomoyo_path_info *filename; struct tomoyo_group *group; - u8 is_group; }; +/* Structure for holding a number. */ struct tomoyo_number_union { unsigned long values[2]; - struct tomoyo_group *group; - u8 min_type; - u8 max_type; - u8 is_group; + struct tomoyo_group *group; /* Maybe NULL. */ + /* One of values in "enum tomoyo_value_type". */ + u8 value_type[2]; }; /* Structure for "path_group"/"number_group" directive. */ struct tomoyo_group { - struct list_head list; + struct tomoyo_shared_acl_head head; const struct tomoyo_path_info *group_name; struct list_head member_list; - atomic_t users; }; /* Structure for "path_group" directive. */ @@ -355,130 +461,158 @@ struct tomoyo_number_group { struct tomoyo_number_union number; }; -/* - * tomoyo_acl_info is a structure which is used for holding - * - * (1) "list" which is linked to the ->acl_info_list of - * "struct tomoyo_domain_info" - * (2) "is_deleted" is a bool which is true if this domain is marked as - * "deleted", false otherwise. - * (3) "type" which tells type of the entry. - * - * Packing "struct tomoyo_acl_info" allows - * "struct tomoyo_path_acl" to embed "u16" and "struct tomoyo_path2_acl" - * "struct tomoyo_path_number_acl" "struct tomoyo_mkdev_acl" to embed - * "u8" without enlarging their structure size. - */ +/* Subset of "struct stat". Used by conditional ACL and audit logs. */ +struct tomoyo_mini_stat { + uid_t uid; + gid_t gid; + ino_t ino; + mode_t mode; + dev_t dev; + dev_t rdev; +}; + +/* Structure for dumping argv[] and envp[] of "struct linux_binprm". */ +struct tomoyo_page_dump { + struct page *page; /* Previously dumped page. */ + char *data; /* Contents of "page". Size is PAGE_SIZE. */ +}; + +/* Structure for attribute checks in addition to pathname checks. */ +struct tomoyo_obj_info { + /* + * True if tomoyo_get_attributes() was already called, false otherwise. + */ + bool validate_done; + /* True if @stat[] is valid. */ + bool stat_valid[TOMOYO_MAX_PATH_STAT]; + /* First pathname. Initialized with { NULL, NULL } if no path. */ + struct path path1; + /* Second pathname. Initialized with { NULL, NULL } if no path. */ + struct path path2; + /* + * Information on @path1, @path1's parent directory, @path2, @path2's + * parent directory. + */ + struct tomoyo_mini_stat stat[TOMOYO_MAX_PATH_STAT]; + /* + * Content of symbolic link to be created. NULL for operations other + * than symlink(). + */ + struct tomoyo_path_info *symlink_target; +}; + +/* Structure for argv[]. */ +struct tomoyo_argv { + unsigned long index; + const struct tomoyo_path_info *value; + bool is_not; +}; + +/* Structure for envp[]. */ +struct tomoyo_envp { + const struct tomoyo_path_info *name; + const struct tomoyo_path_info *value; + bool is_not; +}; + +/* Structure for execve() operation. */ +struct tomoyo_execve { + struct tomoyo_request_info r; + struct tomoyo_obj_info obj; + struct linux_binprm *bprm; + /* For dumping argv[] and envp[]. */ + struct tomoyo_page_dump dump; + /* For temporary use. */ + char *tmp; /* Size is TOMOYO_EXEC_TMPSIZE bytes */ +}; + +/* Structure for entries which follows "struct tomoyo_condition". */ +struct tomoyo_condition_element { + /* + * Left hand operand. A "struct tomoyo_argv" for TOMOYO_ARGV_ENTRY, a + * "struct tomoyo_envp" for TOMOYO_ENVP_ENTRY is attached to the tail + * of the array of this struct. + */ + u8 left; + /* + * Right hand operand. A "struct tomoyo_number_union" for + * TOMOYO_NUMBER_UNION, a "struct tomoyo_name_union" for + * TOMOYO_NAME_UNION is attached to the tail of the array of this + * struct. + */ + u8 right; + /* Equation operator. True if equals or overlaps, false otherwise. */ + bool equals; +}; + +/* Structure for optional arguments. */ +struct tomoyo_condition { + struct tomoyo_shared_acl_head head; + u32 size; /* Memory size allocated for this entry. */ + u16 condc; /* Number of conditions in this struct. */ + u16 numbers_count; /* Number of "struct tomoyo_number_union values". */ + u16 names_count; /* Number of "struct tomoyo_name_union names". */ + u16 argc; /* Number of "struct tomoyo_argv". */ + u16 envc; /* Number of "struct tomoyo_envp". */ + /* + * struct tomoyo_condition_element condition[condc]; + * struct tomoyo_number_union values[numbers_count]; + * struct tomoyo_name_union names[names_count]; + * struct tomoyo_argv argv[argc]; + * struct tomoyo_envp envp[envc]; + */ +}; + +/* Common header for individual entries. */ struct tomoyo_acl_info { struct list_head list; + struct tomoyo_condition *cond; /* Maybe NULL. */ bool is_deleted; - u8 type; /* = one of values in "enum tomoyo_acl_entry_type_index". */ + u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */ } __packed; -/* - * tomoyo_domain_info is a structure which is used for holding permissions - * (e.g. "allow_read /lib/libc-2.5.so") given to each domain. - * It has following fields. - * - * (1) "list" which is linked to tomoyo_domain_list . - * (2) "acl_info_list" which is linked to "struct tomoyo_acl_info". - * (3) "domainname" which holds the name of the domain. - * (4) "profile" which remembers profile number assigned to this domain. - * (5) "is_deleted" is a bool which is true if this domain is marked as - * "deleted", false otherwise. - * (6) "quota_warned" is a bool which is used for suppressing warning message - * when learning mode learned too much entries. - * (7) "ignore_global_allow_read" is a bool which is true if this domain - * should ignore "allow_read" directive in exception policy. - * (8) "transition_failed" is a bool which is set to true when 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. If set to true, more than one process continued execve() - * without domain transition. - * (9) "users" is an atomic_t that holds how many "struct cred"->security - * are referring this "struct tomoyo_domain_info". If is_deleted == true - * and users == 0, this struct will be kfree()d upon next garbage - * collection. - * - * A domain's lifecycle is an analogy of files on / directory. - * Multiple domains with the same domainname cannot be created (as with - * creating files with the same filename fails with -EEXIST). - * If a process reached a domain, that process can reside in that domain after - * that domain is marked as "deleted" (as with a process can access an already - * open()ed file after that file was unlink()ed). - */ +/* Structure for domain information. */ struct tomoyo_domain_info { struct list_head list; struct list_head acl_info_list; /* Name of this domain. Never NULL. */ const struct tomoyo_path_info *domainname; + /* Namespace for this domain. Never NULL. */ + struct tomoyo_policy_namespace *ns; u8 profile; /* Profile number to use. */ + u8 group; /* Group number to use. */ bool is_deleted; /* Delete flag. */ - bool quota_warned; /* Quota warnning flag. */ - bool ignore_global_allow_read; /* Ignore "allow_read" flag. */ - bool transition_failed; /* Domain transition failed flag. */ + bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS]; atomic_t users; /* Number of referring credentials. */ }; /* - * tomoyo_path_acl is a structure which is used for holding an - * entry with one pathname operation (e.g. open(), mkdir()). - * It has following fields. - * - * (1) "head" which is a "struct tomoyo_acl_info". - * (2) "perm" which is a bitmask of permitted operations. - * (3) "name" is the pathname. - * - * Directives held by this structure are "allow_read/write", "allow_execute", - * "allow_read", "allow_write", "allow_unlink", "allow_rmdir", - * "allow_truncate", "allow_symlink", "allow_rewrite", "allow_chroot" and - * "allow_unmount". + * Structure for "file execute", "file read", "file write", "file append", + * "file unlink", "file getattr", "file rmdir", "file truncate", + * "file symlink", "file chroot" and "file unmount" directive. */ struct tomoyo_path_acl { struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */ - u16 perm; + u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */ struct tomoyo_name_union name; }; /* - * tomoyo_path_number_acl is a structure which is used for holding an - * entry with one pathname and one number operation. - * It has following fields. - * - * (1) "head" which is a "struct tomoyo_acl_info". - * (2) "perm" which is a bitmask of permitted operations. - * (3) "name" is the pathname. - * (4) "number" is the numeric value. - * - * Directives held by this structure are "allow_create", "allow_mkdir", - * "allow_ioctl", "allow_mkfifo", "allow_mksock", "allow_chmod", "allow_chown" - * and "allow_chgrp". - * + * Structure for "file create", "file mkdir", "file mkfifo", "file mksock", + * "file ioctl", "file chmod", "file chown" and "file chgrp" directive. */ struct tomoyo_path_number_acl { struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */ + /* Bitmask of values in "enum tomoyo_path_number_acl_index". */ u8 perm; struct tomoyo_name_union name; struct tomoyo_number_union number; }; -/* - * tomoyo_mkdev_acl is a structure which is used for holding an - * entry with one pathname and three numbers operation. - * It has following fields. - * - * (1) "head" which is a "struct tomoyo_acl_info". - * (2) "perm" which is a bitmask of permitted operations. - * (3) "mode" is the create mode. - * (4) "major" is the major number of device node. - * (5) "minor" is the minor number of device node. - * - * Directives held by this structure are "allow_mkchar", "allow_mkblock". - * - */ +/* Structure for "file mkblock" and "file mkchar" directive. */ struct tomoyo_mkdev_acl { struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */ - u8 perm; + u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */ struct tomoyo_name_union name; struct tomoyo_number_union mode; struct tomoyo_number_union major; @@ -486,38 +620,16 @@ struct tomoyo_mkdev_acl { }; /* - * 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". + * Structure for "file rename", "file link" and "file pivot_root" directive. */ struct tomoyo_path2_acl { struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */ - u8 perm; + u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */ 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". - */ +/* Structure for "file mount" directive. */ struct tomoyo_mount_acl { struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */ struct tomoyo_name_union dev_name; @@ -526,7 +638,15 @@ struct tomoyo_mount_acl { struct tomoyo_number_union flags; }; -#define TOMOYO_MAX_IO_READ_QUEUE 32 +/* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */ +struct tomoyo_acl_param { + char *data; + struct list_head *list; + struct tomoyo_policy_namespace *ns; + bool is_delete; +}; + +#define TOMOYO_MAX_IO_READ_QUEUE 64 /* * Structure for reading/writing policy via /sys/kernel/security/tomoyo @@ -538,95 +658,55 @@ 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; + size_t read_user_buf_avail; struct { + struct list_head *ns; struct list_head *domain; struct list_head *group; struct list_head *acl; - int avail; - int step; - int query_index; + size_t avail; + unsigned int step; + unsigned int query_index; u16 index; + u16 cond_index; + u8 acl_group_index; + u8 cond_step; u8 bit; u8 w_pos; bool eof; bool print_this_domain_only; - bool print_execute_only; + bool print_transition_related_only; + bool print_cond_part; const char *w[TOMOYO_MAX_IO_READ_QUEUE]; } r; - /* The position currently writing to. */ - struct tomoyo_domain_info *write_var1; + struct { + struct tomoyo_policy_namespace *ns; + /* The position currently writing to. */ + struct tomoyo_domain_info *domain; + /* Bytes available for writing. */ + size_t avail; + bool is_delete; + } w; /* Buffer for reading. */ char *read_buf; /* Size of read buffer. */ - int readbuf_size; + size_t readbuf_size; /* Buffer for writing. */ char *write_buf; - /* Bytes available for writing. */ - int write_avail; /* Size of write buffer. */ - int writebuf_size; + size_t writebuf_size; /* Type of this interface. */ - u8 type; -}; - -/* - * tomoyo_readable_file is a structure which is used for holding - * "allow_read" entries. - * It has following fields. - * - * (1) "head" is "struct tomoyo_acl_head". - * (2) "filename" is a pathname which is allowed to open(O_RDONLY). - */ -struct tomoyo_readable_file { - struct tomoyo_acl_head head; - const struct tomoyo_path_info *filename; -}; - -/* - * tomoyo_no_pattern is a structure which is used for holding - * "file_pattern" entries. - * It has following fields. - * - * (1) "head" is "struct tomoyo_acl_head". - * (2) "pattern" is a pathname pattern which is used for converting pathnames - * to pathname patterns during learning mode. - */ -struct tomoyo_no_pattern { - struct tomoyo_acl_head head; - const struct tomoyo_path_info *pattern; -}; - -/* - * tomoyo_no_rewrite is a structure which is used for holding - * "deny_rewrite" entries. - * It has following fields. - * - * (1) "head" is "struct tomoyo_acl_head". - * (2) "pattern" is a pathname which is by default not permitted to modify - * already existing content. - */ -struct tomoyo_no_rewrite { - struct tomoyo_acl_head head; - const struct tomoyo_path_info *pattern; + enum tomoyo_securityfs_interface_index type; + /* Users counter protected by tomoyo_io_buffer_list_lock. */ + u8 users; + /* List for telling GC not to kfree() elements. */ + struct list_head list; }; /* - * 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. + * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/ + * "no_keep_domain" keyword. */ struct tomoyo_transition_control { struct tomoyo_acl_head head; @@ -637,32 +717,14 @@ struct tomoyo_transition_control { 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. - */ +/* Structure for "aggregator" keyword. */ 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. - */ +/* Structure for policy manager. */ struct tomoyo_manager { struct tomoyo_acl_head head; bool is_domain; /* True if manager is a domainname. */ @@ -677,6 +739,7 @@ struct tomoyo_preference { bool permissive_verbose; }; +/* Structure for /sys/kernel/security/tomnoyo/profile interface. */ struct tomoyo_profile { const struct tomoyo_path_info *comment; struct tomoyo_preference *learning; @@ -685,323 +748,409 @@ struct tomoyo_profile { struct tomoyo_preference preference; u8 default_config; u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX]; + unsigned int pref[TOMOYO_MAX_PREF]; +}; + +/* Structure for representing YYYY/MM/DD hh/mm/ss. */ +struct tomoyo_time { + u16 year; + u8 month; + u8 day; + u8 hour; + u8 min; + u8 sec; +}; + +/* Structure for policy namespace. */ +struct tomoyo_policy_namespace { + /* Profile table. Memory is allocated as needed. */ + struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES]; + /* List of "struct tomoyo_group". */ + struct list_head group_list[TOMOYO_MAX_GROUP]; + /* List of policy. */ + struct list_head policy_list[TOMOYO_MAX_POLICY]; + /* The global ACL referred by "use_group" keyword. */ + struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS]; + /* List for connecting to tomoyo_namespace_list list. */ + struct list_head namespace_list; + /* Profile version. Currently only 20100903 is defined. */ + unsigned int profile_version; + /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */ + const char *name; }; /********** Function prototypes. **********/ -/* 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_condition(struct tomoyo_request_info *r, + const struct tomoyo_condition *cond); 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_domain_quota_is_ok(struct tomoyo_request_info *r); +bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos, + struct tomoyo_page_dump *dump); +bool tomoyo_memory_ok(void *ptr); 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_parse_name_union(struct tomoyo_acl_param *param, + struct tomoyo_name_union *ptr); +bool tomoyo_parse_number_union(struct tomoyo_acl_param *param, + struct tomoyo_number_union *ptr); 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_read/write", "allow_execute", "allow_read", "allow_write", - * "allow_create", "allow_unlink", "allow_mkdir", "allow_rmdir", - * "allow_mkfifo", "allow_mksock", "allow_mkblock", "allow_mkchar", - * "allow_truncate", "allow_symlink", "allow_rewrite", "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_read" entry in exception policy. */ -int tomoyo_write_globally_readable(char *data, 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 "deny_rewrite" entry in exception policy. */ -int tomoyo_write_no_rewrite(char *data, const bool is_delete); -/* Create "file_pattern" entry in exception policy. */ -int tomoyo_write_pattern(char *data, 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. */ +bool tomoyo_permstr(const char *string, const char *keyword); +bool tomoyo_str_starts(char **src, const char *find); 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_init_log(struct tomoyo_request_info *r, int len, const char *fmt, + va_list args); +char *tomoyo_read_token(struct tomoyo_acl_param *param); char *tomoyo_realpath_from_path(struct path *path); -/* Get patterned pathname. */ -const char *tomoyo_pattern(const struct tomoyo_path_info *filename); - -/* 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. - */ +char *tomoyo_realpath_nofollow(const char *pathname); +const char *tomoyo_get_exe(void); +const char *tomoyo_yesno(const unsigned int value); +const struct tomoyo_path_info *tomoyo_compare_name_union +(const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr); 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); +const struct tomoyo_path_info *tomoyo_path_matches_group +(const struct tomoyo_path_info *pathname, const struct tomoyo_group *group); 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_close_control(struct tomoyo_io_buffer *head); +int tomoyo_find_next_domain(struct linux_binprm *bprm); +int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile, + const u8 index); +int tomoyo_init_request_info(struct tomoyo_request_info *r, + struct tomoyo_domain_info *domain, + const u8 index); 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_mount_permission(char *dev_name, struct path *path, + const char *type, unsigned long flags, + void *data_page); +int tomoyo_open_control(const u8 type, struct file *file); 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_path_number_perm(const u8 operation, struct path *path, + unsigned long number); +int tomoyo_path_perm(const u8 operation, struct path *path, + const char *target); +int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation, + const struct tomoyo_path_info *filename); +int tomoyo_poll_control(struct file *file, poll_table *wait); +int tomoyo_poll_log(struct file *file, poll_table *wait); +int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) + __printf(2, 3); 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)); + struct tomoyo_acl_param *param, + 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 - *)); + struct tomoyo_acl_param *param, + bool (*check_duplicate) + (const struct tomoyo_acl_head *, + const struct tomoyo_acl_head *)); +int tomoyo_write_aggregator(struct tomoyo_acl_param *param); +int tomoyo_write_file(struct tomoyo_acl_param *param); +int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type); +int tomoyo_write_transition_control(struct tomoyo_acl_param *param, + const u8 type); +ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer, + const int buffer_len); +ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head, + const char __user *buffer, const int buffer_len); +struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param); +struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname, + const bool transit); +struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname); +struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param, + const u8 idx); +struct tomoyo_policy_namespace *tomoyo_assign_namespace +(const char *domainname); +struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns, + const u8 profile); +unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain, + const u8 index); +u8 tomoyo_parse_ulong(unsigned long *result, char **str); +void *tomoyo_commit_ok(void *data, const unsigned int size); +void __init tomoyo_load_builtin_policy(void); +void __init tomoyo_mm_init(void); void tomoyo_check_acl(struct tomoyo_request_info *r, bool (*check_entry) (struct tomoyo_request_info *, const struct tomoyo_acl_info *)); +void tomoyo_check_profile(void); +void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp); +void tomoyo_del_condition(struct list_head *element); +void tomoyo_fill_path_info(struct tomoyo_path_info *ptr); +void tomoyo_get_attributes(struct tomoyo_obj_info *obj); +void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns); +void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) + __printf(2, 3); +void tomoyo_load_policy(const char *filename); +void tomoyo_memory_free(void *ptr); +void tomoyo_normalize_line(unsigned char *buffer); +void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register); +void tomoyo_print_ulong(char *buffer, const int buffer_len, + const unsigned long value, const u8 type); +void tomoyo_put_name_union(struct tomoyo_name_union *ptr); +void tomoyo_put_number_union(struct tomoyo_number_union *ptr); +void tomoyo_read_log(struct tomoyo_io_buffer *head); +void tomoyo_update_stat(const u8 index); +void tomoyo_warn_oom(const char *function); +void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...) + __printf(2, 3); +void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt, + va_list args); /********** External variable definitions. **********/ -/* Lock for GC. */ -extern struct srcu_struct tomoyo_ss; - -/* The list for "struct tomoyo_domain_info". */ +extern bool tomoyo_policy_loaded; +extern const char * const tomoyo_condition_keyword +[TOMOYO_MAX_CONDITION_KEYWORD]; +extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS]; +extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX + + TOMOYO_MAX_MAC_CATEGORY_INDEX]; +extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE]; +extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION]; +extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX]; +extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION]; +extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION]; +extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION]; +extern struct list_head tomoyo_condition_list; 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 list_head tomoyo_namespace_list; extern struct mutex tomoyo_policy_lock; - -/* Has /sbin/init started? */ -extern bool tomoyo_policy_loaded; - -/* The kernel's domain. */ +extern struct srcu_struct tomoyo_ss; 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; +extern struct tomoyo_policy_namespace tomoyo_kernel_namespace; +extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT]; +extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT]; /********** Inlined functions. **********/ +/** + * tomoyo_read_lock - Take lock for protecting policy. + * + * Returns index number for tomoyo_read_unlock(). + */ static inline int tomoyo_read_lock(void) { return srcu_read_lock(&tomoyo_ss); } +/** + * tomoyo_read_unlock - Release lock for protecting policy. + * + * @idx: Index number returned by tomoyo_read_lock(). + * + * Returns nothing. + */ 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) +/** + * tomoyo_sys_getppid - Copy of getppid(). + * + * Returns parent process's PID. + * + * Alpha does not have getppid() defined. To be able to build this module on + * Alpha, I have to copy getppid() from kernel/timer.c. + */ +static inline pid_t tomoyo_sys_getppid(void) { - return a->hash != b->hash || strcmp(a->name, b->name); + pid_t pid; + rcu_read_lock(); + pid = task_tgid_vnr(current->real_parent); + rcu_read_unlock(); + return pid; } /** - * tomoyo_valid - Check whether the character is a valid char. + * tomoyo_sys_getpid - Copy of getpid(). * - * @c: The character to check. + * Returns current thread's PID. * - * Returns true if @c is a valid character, false otherwise. + * Alpha does not have getpid() defined. To be able to build this module on + * Alpha, I have to copy getpid() from kernel/timer.c. */ -static inline bool tomoyo_valid(const unsigned char c) +static inline pid_t tomoyo_sys_getpid(void) { - return c > ' ' && c < 127; + return task_tgid_vnr(current); } /** - * tomoyo_invalid - Check whether the character is an invalid char. + * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure. * - * @c: The character to check. + * @a: Pointer to "struct tomoyo_path_info". + * @b: Pointer to "struct tomoyo_path_info". * - * Returns true if @c is an invalid character, false otherwise. + * Returns true if @a == @b, false otherwise. */ -static inline bool tomoyo_invalid(const unsigned char c) +static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a, + const struct tomoyo_path_info *b) { - return c && (c <= ' ' || c >= 127); + return a->hash != b->hash || strcmp(a->name, b->name); } +/** + * tomoyo_put_name - Drop reference on "struct tomoyo_name". + * + * @name: Pointer to "struct tomoyo_path_info". Maybe NULL. + * + * Returns nothing. + */ 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); + atomic_dec(&ptr->head.users); } } +/** + * tomoyo_put_condition - Drop reference on "struct tomoyo_condition". + * + * @cond: Pointer to "struct tomoyo_condition". Maybe NULL. + * + * Returns nothing. + */ +static inline void tomoyo_put_condition(struct tomoyo_condition *cond) +{ + if (cond) + atomic_dec(&cond->head.users); +} + +/** + * tomoyo_put_group - Drop reference on "struct tomoyo_group". + * + * @group: Pointer to "struct tomoyo_group". Maybe NULL. + * + * Returns nothing. + */ static inline void tomoyo_put_group(struct tomoyo_group *group) { if (group) - atomic_dec(&group->users); + atomic_dec(&group->head.users); } +/** + * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread. + * + * Returns pointer to "struct tomoyo_domain_info" for current thread. + */ static inline struct tomoyo_domain_info *tomoyo_domain(void) { return current_cred()->security; } +/** + * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread. + * + * @task: Pointer to "struct task_struct". + * + * Returns pointer to "struct tomoyo_security" for specified thread. + */ 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) +/** + * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry. + * + * @a: Pointer to "struct tomoyo_name_union". + * @b: Pointer to "struct tomoyo_name_union". + * + * Returns true if @a == @b, false otherwise. + */ +static inline bool tomoyo_same_name_union +(const struct tomoyo_name_union *a, const struct tomoyo_name_union *b) { - return p1->type == p2->type; + return a->filename == b->filename && a->group == b->group; } -static inline bool tomoyo_same_name_union -(const struct tomoyo_name_union *p1, const struct tomoyo_name_union *p2) +/** + * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry. + * + * @a: Pointer to "struct tomoyo_number_union". + * @b: Pointer to "struct tomoyo_number_union". + * + * Returns true if @a == @b, false otherwise. + */ +static inline bool tomoyo_same_number_union +(const struct tomoyo_number_union *a, const struct tomoyo_number_union *b) { - return p1->filename == p2->filename && p1->group == p2->group && - p1->is_group == p2->is_group; + return a->values[0] == b->values[0] && a->values[1] == b->values[1] && + a->group == b->group && a->value_type[0] == b->value_type[0] && + a->value_type[1] == b->value_type[1]; } -static inline bool tomoyo_same_number_union -(const struct tomoyo_number_union *p1, const struct tomoyo_number_union *p2) +/** + * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread. + * + * Returns pointer to "struct tomoyo_policy_namespace" for current thread. + */ +static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void) +{ + return tomoyo_domain()->ns; +} + +#if defined(CONFIG_SLOB) + +/** + * tomoyo_round2 - Round up to power of 2 for calculating memory usage. + * + * @size: Size to be rounded up. + * + * Returns @size. + * + * Since SLOB does not round up, this function simply returns @size. + */ +static inline int tomoyo_round2(size_t size) +{ + return size; +} + +#else + +/** + * tomoyo_round2 - Round up to power of 2 for calculating memory usage. + * + * @size: Size to be rounded up. + * + * Returns rounded size. + * + * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of + * (e.g.) 128 bytes. + */ +static inline int tomoyo_round2(size_t size) { - 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; +#if PAGE_SIZE == 4096 + size_t bsize = 32; +#else + size_t bsize = 64; +#endif + if (!size) + return 0; + while (size > bsize) + bsize <<= 1; + return bsize; } +#endif + /** * list_for_each_cookie - iterate over a list with cookie. * @pos: the &struct list_head to use as a loop cursor. |