diff options
Diffstat (limited to 'security/tomoyo/common.h')
| -rw-r--r-- | security/tomoyo/common.h | 97 |
1 files changed, 96 insertions, 1 deletions
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h index beb7d0eb522..958d433b011 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. **********/ @@ -41,6 +42,22 @@ struct linux_binprm; /* 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_MAX_CONDITION_KEYWORD, + TOMOYO_NUMBER_UNION, +}; + /* Index numbers for operation mode. */ enum tomoyo_mode_index { TOMOYO_CONFIG_DISABLED, @@ -61,6 +78,7 @@ enum tomoyo_policy_id { TOMOYO_ID_TRANSITION_CONTROL, TOMOYO_ID_AGGREGATOR, TOMOYO_ID_MANAGER, + TOMOYO_ID_CONDITION, TOMOYO_ID_NAME, TOMOYO_ID_ACL, TOMOYO_ID_DOMAIN, @@ -370,9 +388,32 @@ struct tomoyo_number_group { struct tomoyo_number_union number; }; +/* Structure for entries which follows "struct tomoyo_condition". */ +struct tomoyo_condition_element { + /* Left hand operand. */ + u8 left; + /* Right hand operand. */ + 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". */ + /* + * struct tomoyo_condition_element condition[condc]; + * struct tomoyo_number_union values[numbers_count]; + */ +}; + /* 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". */ } __packed; @@ -475,12 +516,15 @@ struct tomoyo_io_buffer { 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_transition_related_only; + bool print_cond_part; const char *w[TOMOYO_MAX_IO_READ_QUEUE]; } r; struct { @@ -586,6 +630,8 @@ struct tomoyo_policy_namespace { bool tomoyo_compare_number_union(const unsigned long value, const struct tomoyo_number_union *ptr); +bool tomoyo_condition(struct tomoyo_request_info *r, + const struct tomoyo_condition *cond); bool tomoyo_correct_domain(const unsigned char *domainname); bool tomoyo_correct_path(const char *filename); bool tomoyo_correct_word(const char *string); @@ -664,6 +710,7 @@ 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); @@ -675,6 +722,7 @@ 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); @@ -683,6 +731,7 @@ void tomoyo_check_acl(struct tomoyo_request_info *r, 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_init_policy_namespace(struct tomoyo_policy_namespace *ns); void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...) @@ -706,6 +755,8 @@ void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt, /********** External variable definitions. **********/ 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]; @@ -715,6 +766,7 @@ 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_name_list[TOMOYO_MAX_HASH]; extern struct list_head tomoyo_namespace_list; @@ -750,6 +802,36 @@ static inline void tomoyo_read_unlock(int idx) } /** + * 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) +{ + pid_t pid; + rcu_read_lock(); + pid = task_tgid_vnr(current->real_parent); + rcu_read_unlock(); + return pid; +} + +/** + * tomoyo_sys_getpid - Copy of getpid(). + * + * Returns current thread's PID. + * + * 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 pid_t tomoyo_sys_getpid(void) +{ + return task_tgid_vnr(current); +} + +/** * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure. * * @a: Pointer to "struct tomoyo_path_info". @@ -780,6 +862,19 @@ static inline void tomoyo_put_name(const struct tomoyo_path_info *name) } /** + * 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. |