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minix/minix/llvm/include/st/callback.h
David van Moolenbroek 78ff1e69b6 libmagic: fail on all state transfer errors 
Also do not report debugging information by default.

Change-Id: I5d80a3df3c3ecc16a577d88abe6e37a792add747
2015-09-17 17:14:03 +00:00

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C
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#ifndef ST_CALLBACK_H
#define ST_CALLBACK_H
#include <st/state_transfer.h>
#define NUM_CB_ARRAYS 8
#define MAX_NUM_CBS 20
/* Struct for holding info for selement transfer callbacks. */
struct st_cb_info {
_magic_selement_t *local_selement;
_magic_selement_t *local_selements;
int walk_flags;
int st_cb_flags;
int *st_cb_saved_flags;
st_init_info_t *init_info;
};
/* Callback type definitions and call registration helpers. */
#define CALLBACK_PREFIX st
#undef CALLBACK_FAMILY
#include <st/cb_template.h>
DEFINE_DECL_CALLBACK(void *, pages_allocate, (st_init_info_t *info, uint32_t *phys, int num_pages));
DEFINE_DECL_CALLBACK(void, pages_free, (st_init_info_t *info, st_alloc_pages *current_page));
DEFINE_DECL_CALLBACK(int, state_cleanup, (void));
typedef magic_sentry_analyze_cb_t st_cb_state_checking_t;
PUBLIC void st_setcb_state_checking(st_cb_state_checking_t cb);
DEFINE_DECL_CALLBACK(void, selement_map, (_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping));
DEFINE_DECL_CALLBACK_CUSTOM(int, selement_transfer, (_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info), (CALLBACK_TYPENAME(selement_transfer) cb, int flags));
/* Struct for holding state transfer callback functions. */
struct st_cbs_t {
st_cb_pages_allocate_t st_cb_pages_allocate;
st_cb_pages_free_t st_cb_pages_free;
st_cb_state_cleanup_t st_cb_state_cleanup;
st_cb_state_checking_t st_cb_state_checking;
st_cb_selement_map_t st_cb_selement_map;
st_cb_selement_transfer_t st_cb_selement_transfer[NUM_CB_ARRAYS][MAX_NUM_CBS];
};
/* Predefined callback implementations. */
PUBLIC void *st_cb_pages_allocate(st_init_info_t *info, uint32_t *phys, int num_pages);
PUBLIC void st_cb_pages_free(st_init_info_t *info, st_alloc_pages *current_page);
PUBLIC int st_cb_state_cleanup_null(void);
PUBLIC int st_cb_state_checking_null(_magic_selement_t* selement,
_magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats,
void* cb_args);
PUBLIC int st_cb_state_checking_print(_magic_selement_t* selement,
_magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats,
void* cb_args);
PUBLIC int st_cb_state_checking_panic(_magic_selement_t* selement,
_magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats,
void* cb_args);
PUBLIC int st_cb_transfer_sentry_default(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_typename_default(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_walkable(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_ptr(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_identity(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_cond_identity(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_nonptr(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_struct(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_selement_base(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC int st_cb_transfer_selement_generic(_magic_selement_t *selement, _magic_sel_analyzed_t *sel_analyzed, _magic_sel_stats_t *sel_stats, struct st_cb_info *cb_info);
PUBLIC void st_cb_map_from_parent_array_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_child_array_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_from_parent_union_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_child_union_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_from_parent_struct_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_child_struct_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_child_primitive_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_child_ptr_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_from_parent_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_child_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
PUBLIC void st_cb_map_selement_generic(_magic_selement_t *cached_selement, _magic_selement_t *local_selement, struct st_cb_info *cb_info, int is_trg_mapping);
/* Macros for callbacks not defined statically. */
#define ST_CB_SELEMENT_TRANSFER_EMPTY {{0}}
/* Macros for predefined callback implementations. */
#define ST_CB_PAGES_ALLOCATE_DEFAULT st_cb_pages_allocate
#define ST_CB_PAGES_FREE_DEFAULT st_cb_pages_free
#define ST_CB_STATE_CLEANUP_DEFAULT st_cb_state_cleanup_null
#define ST_CB_STATE_CHECKING_DEFAULT st_cb_state_checking_print
#define ST_CB_SELEMENT_MAP_DEFAULT st_cb_map_selement_generic
#define ST_CB_PRINT st_cb_print
#define ST_TYPE_NAME_KEY(TYPE) ((char *) (TYPE)->ext)
#define ST_TYPE_NAME_MATCH(REGISTERED_TYPE_NAME_KEY, KEY) \
(REGISTERED_TYPE_NAME_KEY == KEY)
#define ST_TYPE_NAME_MATCH_ANY(REGISTERED_TYPE_NAME_KEYS, KEY) \
st_type_name_match_any(REGISTERED_TYPE_NAME_KEYS, KEY)
#define ST_SENTRY_NAME_MATCH(SENTRY_WILDCARD_NAME, NAME) \
(!st_strcmp_wildcard(SENTRY_WILDCARD_NAME, NAME))
#define ST_SENTRY_NAME_MATCH_ANY(SENTRY_WILDCARD_NAMES, NAME) \
st_sentry_name_match_any(SENTRY_WILDCARD_NAMES, NAME)
#define ST_DSENTRY_PARENT_NAME_MATCH(DSENTRY_WILDCARD_PARENT_NAME, PARENT_NAME)\
(!st_strcmp_wildcard(DSENTRY_WILDCARD_PARENT_NAME, PARENT_NAME))
#define ST_DSENTRY_PARENT_NAME_MATCH_ANY(DSENTRY_WILDCARD_PARENT_NAMES, \
PARENT_NAME) \
st_dsentry_parent_name_match_any(DSENTRY_WILDCARD_PARENT_NAMES, PARENT_NAME)
#define ST_CB_TYPE_TYPENAME 1
#define ST_CB_TYPE_SENTRY 2
#define ST_CB_TYPE_SELEMENT 4
#define ST_CB_NOT_PROCESSED 1000
#define ST_CB_CHECK_ONLY 0x01
#define ST_CB_PRINT_DBG 0x02
#define ST_CB_PRINT_ERR 0x04
#define ST_CB_FORCE_IXFER 0x08
#define ST_CB_DEFAULT_FLAGS (ST_CB_PRINT_ERR)
#define ST_CB_FLAG(F) (cb_info->st_cb_flags & F)
#define ST_CB_DBG ST_CB_PRINT_DBG
#define ST_CB_ERR ST_CB_PRINT_ERR
#define ST_CB_PRINT_LEVEL(L) ST_CB_FLAG(L)
#define ST_CB_LEVEL_TO_STR(L) \
(L == ST_CB_DBG ? "DEBUG" : \
L == ST_CB_ERR ? "ERROR" : "???")
#endif /* ST_CALLBACK_H */
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