2 * Copyright (C) 2006 Dan Carpenter.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
31 #include "expression.h"
33 #include "smatch_constants.h"
35 typedef long long mtag_t
;
41 #define STATE(_x) static struct smatch_state _x = { .name = #_x }
42 extern struct smatch_state undefined
;
43 extern struct smatch_state merged
;
44 extern struct smatch_state true_state
;
45 extern struct smatch_state false_state
;
46 DECLARE_ALLOCATOR(smatch_state
);
48 static inline void *INT_PTR(int i
)
50 return (void *)(long)i
;
53 static inline int PTR_INT(void *p
)
63 DECLARE_ALLOCATOR(tracker
);
64 DECLARE_PTR_LIST(tracker_list
, struct tracker
);
65 DECLARE_PTR_LIST(stree_stack
, struct stree
);
67 /* The first 3 struct members must match struct tracker */
72 unsigned short merged
:1;
73 unsigned short leaf
:1;
75 struct smatch_state
*state
;
77 struct sm_state
*left
;
78 struct sm_state
*right
;
79 struct state_list
*possible
;
86 DECLARE_ALLOCATOR(var_sym
);
87 DECLARE_PTR_LIST(var_sym_list
, struct var_sym
);
93 DECLARE_PTR_LIST(constraint_list
, struct constraint
);
99 extern struct alloc_info
*alloc_funcs
;
102 unsigned long long set
;
103 unsigned long long possible
;
114 DECLARATION_HOOK_AFTER
,
116 ASSIGNMENT_HOOK_AFTER
,
118 GLOBAL_ASSIGNMENT_HOOK
,
123 AFTER_LOOP_NO_BREAKS
,
125 WHOLE_CONDITION_HOOK
,
126 FUNCTION_CALL_HOOK_BEFORE
,
128 CALL_HOOK_AFTER_INLINE
,
129 FUNCTION_CALL_HOOK_AFTER_DB
,
130 CALL_ASSIGNMENT_HOOK
,
131 MACRO_ASSIGNMENT_HOOK
,
134 DEREF_HOOK
, /* DEREF_HOOK is junk. Better to use add_dereference_hook() */
156 typedef void (void_fn
)(void);
157 typedef void (expr_func
)(struct expression
*expr
);
158 typedef void (stmt_func
)(struct statement
*stmt
);
159 typedef void (sym_func
)(struct symbol
*sym
);
160 typedef void (name_sym_hook
)(struct expression
*expr
, const char *name
, struct symbol
*sym
);
161 typedef void (sm_hook
)(struct sm_state
*sm
, struct expression
*mod_expr
);
162 typedef void (string_hook
)(struct expression
*expr
, const char *str
);
163 DECLARE_PTR_LIST(void_fn_list
, void_fn
);
164 DECLARE_PTR_LIST(expr_fn_list
, expr_func
);
165 DECLARE_PTR_LIST(stmt_fn_list
, stmt_func
);
166 DECLARE_PTR_LIST(sym_fn_list
, sym_func
);
167 DECLARE_PTR_LIST(name_sym_fn_list
, name_sym_hook
);
168 DECLARE_PTR_LIST(string_hook_list
, string_hook
);
169 void call_void_fns(struct void_fn_list
*list
);
170 void call_expr_fns(struct expr_fn_list
*list
, struct expression
*expr
);
171 void call_stmt_fns(struct stmt_fn_list
*list
, struct statement
*stmt
);
172 void call_sym_fns(struct sym_fn_list
*list
, struct symbol
*sym
);
173 void call_name_sym_fns(struct name_sym_fn_list
*list
, struct expression
*expr
, const char *name
, struct symbol
*sym
);
174 void call_string_hooks(struct string_hook_list
*list
, struct expression
*expr
, const char *str
);
176 void add_dereference_hook(expr_func
*fn
);
178 struct allocation_info
{
180 const char *size_str
;
181 struct expression
*total_size
;
182 struct expression
*nr_elems
;
183 struct expression
*elem_size
;
186 bool safe
; /* safe from overflows */
188 typedef void (alloc_hook
)(struct expression
*expr
, const char *name
, struct symbol
*sym
, struct allocation_info
*info
);
189 void add_allocation_hook(alloc_hook
*func
);
191 void add_hook(void *func
, enum hook_type type
);
192 typedef struct smatch_state
*(merge_func_t
)(struct smatch_state
*s1
, struct smatch_state
*s2
);
193 typedef struct smatch_state
*(unmatched_func_t
)(struct sm_state
*state
);
194 void add_merge_hook(int client_id
, merge_func_t
*func
);
195 void add_unmatched_state_hook(int client_id
, unmatched_func_t
*func
);
196 void add_pre_merge_hook(int client_id
, void (*hook
)(struct sm_state
*cur
, struct sm_state
*other
));
197 typedef void (scope_hook
)(void *data
);
198 void add_scope_hook(scope_hook
*hook
, void *data
);
199 void add_return_string_hook(string_hook
*fn
);
200 typedef void (param_key_hook
)(struct expression
*expr
, const char *name
, struct symbol
*sym
, void *data
);
201 typedef void (func_hook
)(const char *fn
, struct expression
*expr
, void *data
);
202 typedef void (implication_hook
)(const char *fn
, struct expression
*call_expr
,
203 struct expression
*assign_expr
, void *data
);
204 typedef void (return_implies_hook
)(struct expression
*call_expr
,
205 int param
, char *key
, char *value
);
206 typedef int (implied_return_hook
)(struct expression
*call_expr
, void *info
, struct range_list
**rl
);
207 void add_function_hook_early(const char *look_for
, func_hook
*call_back
, void *data
);
208 void add_function_hook(const char *look_for
, func_hook
*call_back
, void *data
);
209 void add_function_hook_late(const char *look_for
, func_hook
*call_back
, void *info
);
211 void add_function_assign_hook(const char *look_for
, func_hook
*call_back
,
213 void register_func_hooks_from_file(const char *file
,
214 func_hook
*call_back
, void *info
);
215 void register_assign_hooks_from_file(const char *file
,
216 func_hook
*call_back
, void *info
);
217 void add_implied_return_hook(const char *look_for
,
218 implied_return_hook
*call_back
,
220 void add_macro_assign_hook(const char *look_for
, func_hook
*call_back
,
222 void add_macro_assign_hook_extra(const char *look_for
, func_hook
*call_back
,
224 void return_implies_state(const char *look_for
, long long start
, long long end
,
225 implication_hook
*call_back
, void *info
);
226 void return_implies_state_sval(const char *look_for
, sval_t start
, sval_t end
,
227 implication_hook
*call_back
, void *info
);
228 void return_implies_exact(const char *look_for
, sval_t start
, sval_t end
,
229 implication_hook
*call_back
, void *info
);
230 struct range_list
*get_range_implications(const char *fn
);
231 void select_return_states_hook(int type
, return_implies_hook
*callback
);
232 void select_return_states_before(void (*fn
)(void));
233 void select_return_states_after(void (*fn
)(void));
234 void add_function_param_key_hook(const char *look_for
, param_key_hook
*call_back
,
235 int param
, const char *key
, void *info
);
236 void add_function_param_key_hook_early(const char *look_for
, param_key_hook
*call_back
,
237 int param
, const char *key
, void *info
);
238 void add_function_param_key_hook_late(const char *look_for
, param_key_hook
*call_back
,
239 int param
, const char *key
, void *info
);
240 void return_implies_param_key(const char *look_for
, sval_t start
, sval_t end
,
241 param_key_hook
*call_back
,
242 int param
, const char *key
, void *info
);
243 void return_implies_param_key_exact(const char *look_for
, sval_t start
, sval_t end
,
244 param_key_hook
*call_back
,
245 int param
, const char *key
, void *info
);
246 void select_return_param_key(int type
, param_key_hook
*callback
);
247 bool get_implied_return(struct expression
*expr
, struct range_list
**rl
);
248 void allocate_hook_memory(void);
249 void allocate_tracker_array(int num_checks
);
251 struct modification_data
{
252 struct smatch_state
*prev
;
253 struct expression
*cur
;
256 void allocate_modification_hooks(void);
257 bool is_sub_member(const char *name
, struct symbol
*sym
, struct sm_state
*sm
);
258 void add_all_modifications_hook(int owner
, name_sym_hook
*hook
);
259 void add_modification_hook(int owner
, sm_hook
*call_back
);
260 void add_modification_hook_late(int owner
, sm_hook
*call_back
);
261 struct smatch_state
*get_modification_state(struct expression
*expr
);
263 int outside_of_function(void);
264 const char *get_filename(void);
265 extern int base_file_stream
;
266 const char *get_base_file(void);
267 unsigned long long get_file_id(void);
268 unsigned long long get_base_file_id(void);
269 char *get_function(void);
270 extern int __smatch_lineno
;
271 int get_lineno(void);
272 extern int final_pass
;
273 extern struct symbol
*cur_func_sym
;
274 extern int option_debug
;
275 extern int local_debug
;
277 extern bool implied_debug
;
278 bool debug_implied(void);
279 bool debug_on(const char *check_name
, const char *var
);
280 extern int option_info
;
281 extern int option_spammy
;
282 extern int option_pedantic
;
283 extern int option_print_names
;
284 extern char *trace_variable
;
285 extern struct stree
*global_states
;
286 void set_function_skipped(void);
287 int is_skipped_function(void);
288 int is_silenced_function(void);
289 extern bool implications_off
;
291 /* smatch_impossible.c */
292 int is_impossible_path(void);
293 void set_true_path_impossible(void);
294 void set_false_path_impossible(void);
295 void set_path_impossible(void);
297 extern FILE *sm_outfd
;
298 extern FILE *sql_outfd
;
299 extern FILE *caller_info_fd
;
300 extern int sm_nr_checks
;
301 extern int sm_nr_errors
;
304 * How to use these routines:
306 * sm_fatal(): an internal error of some kind that should immediately exit
307 * sm_ierror(): an internal error
308 * sm_perror(): an internal error from parsing input source
309 * sm_error(): an error from input source
310 * sm_warning(): a warning from input source
311 * sm_info(): info message (from option_info)
312 * sm_debug(): debug message
313 * sm_msg(): other message (please avoid using this)
316 #define sm_printf(msg...) do { \
317 if (final_pass || option_debug || local_debug || debug_db) \
318 fprintf(sm_outfd, msg); \
321 static inline void sm_prefix(void)
323 sm_printf("%s:%d %s() ", get_filename(), get_lineno(), get_function());
324 if (option_info
|| !option_print_names
)
326 sm_printf("[smatch.%s] ", __CHECKNAME__
);
329 static inline void print_implied_debug_msg();
331 extern bool __silence_warnings_for_stmt
;
333 #define sm_print_msg(type, msg...) \
335 print_implied_debug_msg(); \
336 if (!final_pass && !option_debug && !local_debug && !debug_db) \
338 if (__silence_warnings_for_stmt && !option_debug && !local_debug) \
340 if (!option_info && is_silenced_function()) \
344 sm_printf("warn: "); \
346 } else if (type == 2) { \
347 sm_printf("error: "); \
349 } else if (type == 3) { \
350 sm_printf("parse error: "); \
352 } else if (type == 4) { \
353 sm_printf("pedantic: "); \
359 #define sm_msg(msg...) do { sm_print_msg(0, msg); } while (0)
361 extern char *implied_debug_msg
;
362 static inline void print_implied_debug_msg(void)
364 static struct symbol
*last_printed
= NULL
;
366 if (!implied_debug_msg
)
368 if (last_printed
== cur_func_sym
)
370 last_printed
= cur_func_sym
;
371 sm_msg("%s", implied_debug_msg
);
374 #define sm_debug(msg...) do { if (option_debug) sm_printf(msg); } while (0)
375 #define db_debug(msg...) do { if (option_debug || debug_db) sm_printf(msg); } while (0)
377 #define sm_info(msg...) do { \
378 if (option_debug || (option_info && final_pass)) { \
380 sm_printf("info: "); \
386 #define sm_warning(msg...) do { sm_print_msg(1, msg); } while (0)
387 #define sm_warning_line(line, msg...) do { \
388 int __orig = __smatch_lineno; \
389 __smatch_lineno = line; \
390 sm_print_msg(1, msg); \
391 __smatch_lineno = __orig; \
393 #define sm_error(msg...) do { sm_print_msg(2, msg); } while (0)
394 #define sm_perror(msg...) do { sm_print_msg(3, msg); } while (0)
395 #define sm_pedantic(msg...) do { if (option_pedantic) sm_print_msg(4, msg); } while (0)
397 static inline void sm_fatal(const char *fmt
, ...)
402 vfprintf(sm_outfd
, fmt
, args
);
405 fprintf(sm_outfd
, "\n");
410 static inline void sm_ierror(const char *fmt
, ...)
416 fprintf(sm_outfd
, "internal error: ");
419 vfprintf(sm_outfd
, fmt
, args
);
422 fprintf(sm_outfd
, "\n");
424 #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
426 bool has_states(struct stree
*stree
, int owner
);
427 struct smatch_state
*__get_state(int owner
, const char *name
, struct symbol
*sym
);
428 struct smatch_state
*get_state(int owner
, const char *name
, struct symbol
*sym
);
429 struct smatch_state
*get_state_expr(int owner
, struct expression
*expr
);
430 bool has_possible_state(int owner
, const char *name
, struct symbol
*sym
, struct smatch_state
*state
);
431 bool expr_has_possible_state(int owner
, struct expression
*expr
, struct smatch_state
*state
);
432 struct state_list
*get_possible_states(int owner
, const char *name
,
434 struct state_list
*get_possible_states_expr(int owner
, struct expression
*expr
);
435 struct sm_state
*set_state(int owner
, const char *name
, struct symbol
*sym
,
436 struct smatch_state
*state
);
437 struct sm_state
*set_state_expr(int owner
, struct expression
*expr
,
438 struct smatch_state
*state
);
439 void __delete_state(int owner
, const char *name
, struct symbol
*sym
);
440 void __delete_all_states_sym(struct symbol
*sym
);
441 void set_true_false_states(int owner
, const char *name
, struct symbol
*sym
,
442 struct smatch_state
*true_state
,
443 struct smatch_state
*false_state
);
444 void set_true_false_states_expr(int owner
, struct expression
*expr
,
445 struct smatch_state
*true_state
,
446 struct smatch_state
*false_state
);
448 struct stree
*get_all_states_from_stree(int owner
, struct stree
*source
);
449 struct stree
*get_all_states_stree(int id
);
450 struct stree
*__get_cur_stree(void);
451 int is_reachable(void);
452 void add_get_state_hook(void (*fn
)(int owner
, const char *name
, struct symbol
*sym
));
455 char *ssa_name(const char *name
);
456 void set_ssa_state(int owner
, const char *name
, struct symbol
*sym
, struct smatch_state
*state
);
457 void update_ssa_state(int owner
, const char *name
, struct symbol
*sym
,
458 struct smatch_state
*state
);
459 void update_ssa_sm(int owner
, struct sm_state
*sm
, struct smatch_state
*state
);
460 void set_ssa_state_expr(int owner
, struct expression
*expr
, struct smatch_state
*state
);
461 struct sm_state
*get_ssa_sm_state(int owner
, const char *name
, struct symbol
*sym
);
462 struct sm_state
*get_ssa_sm_state_expr(int owner
, struct expression
*expr
);
463 struct smatch_state
*get_ssa_state(int owner
, const char *name
, struct symbol
*sym
);
464 struct smatch_state
*get_ssa_state_expr(int owner
, struct expression
*expr
);
466 /* smatch_helper.c */
467 DECLARE_PTR_LIST(int_stack
, int);
468 char *alloc_string(const char *str
);
469 char *alloc_string_newline(const char *str
);
470 void free_string(char *str
);
471 void remove_parens(char *str
);
472 struct smatch_state
*alloc_state_num(int num
);
473 struct smatch_state
*alloc_state_str(const char *name
);
474 struct smatch_state
*merge_str_state(struct smatch_state
*s1
, struct smatch_state
*s2
);
475 struct smatch_state
*alloc_state_expr(struct expression
*expr
);
476 struct expression
*get_assigned_call(struct expression
*expr
);
477 struct expression
*get_argument_from_call_expr(struct expression_list
*args
,
479 struct expression
*get_array_expr(struct expression
*expr
);
481 char *expr_to_var(struct expression
*expr
);
482 struct symbol
*expr_to_sym(struct expression
*expr
);
483 char *expr_to_str(struct expression
*expr
);
484 char *expr_to_str_sym(struct expression
*expr
,
485 struct symbol
**sym_ptr
);
486 char *expr_to_var_sym(struct expression
*expr
,
487 struct symbol
**sym_ptr
);
488 char *expr_to_known_chunk_sym(struct expression
*expr
, struct symbol
**sym
);
489 char *expr_to_chunk_sym_vsl(struct expression
*expr
, struct symbol
**sym
, struct var_sym_list
**vsl
);
490 int get_complication_score(struct expression
*expr
);
492 int sym_name_is(const char *name
, struct expression
*expr
);
493 int get_const_value(struct expression
*expr
, sval_t
*sval
);
494 int get_value(struct expression
*expr
, sval_t
*val
);
495 int get_implied_value(struct expression
*expr
, sval_t
*val
);
496 int get_implied_value_fast(struct expression
*expr
, sval_t
*sval
);
497 int get_implied_min(struct expression
*expr
, sval_t
*sval
);
498 int get_implied_max(struct expression
*expr
, sval_t
*val
);
499 int get_hard_max(struct expression
*expr
, sval_t
*sval
);
500 int get_fuzzy_min(struct expression
*expr
, sval_t
*min
);
501 int get_fuzzy_max(struct expression
*expr
, sval_t
*max
);
502 int get_absolute_min(struct expression
*expr
, sval_t
*sval
);
503 int get_absolute_max(struct expression
*expr
, sval_t
*sval
);
504 int parse_call_math(struct expression
*expr
, char *math
, sval_t
*val
);
505 int parse_call_math_rl(struct expression
*call
, const char *math
, struct range_list
**rl
);
506 const char *get_allocation_math(struct expression
*expr
);
507 char *get_value_in_terms_of_parameter_math(struct expression
*expr
);
508 char *get_value_in_terms_of_parameter_math_var_sym(const char *var
, struct symbol
*sym
);
509 int expr_is_zero(struct expression
*expr
);
510 int known_condition_true(struct expression
*expr
);
511 int known_condition_false(struct expression
*expr
);
512 int implied_condition_true(struct expression
*expr
);
513 int implied_condition_false(struct expression
*expr
);
514 int can_integer_overflow(struct symbol
*type
, struct expression
*expr
);
515 void clear_math_cache(void);
516 void set_fast_math_only(void);
517 void clear_fast_math_only(void);
519 int is_array(struct expression
*expr
);
520 struct expression
*get_array_base(struct expression
*expr
);
521 struct expression
*get_array_offset(struct expression
*expr
);
522 const char *show_state(struct smatch_state
*state
);
523 struct statement
*get_expression_statement(struct expression
*expr
);
524 struct expression
*strip__builtin_choose_expr(struct expression
*expr
);
525 struct expression
*strip_Generic(struct expression
*expr
);
526 struct expression
*strip_parens(struct expression
*expr
);
527 struct expression
*strip_expr(struct expression
*expr
);
528 struct expression
*strip_no_cast(struct expression
*expr
);
529 struct expression
*strip_expr_set_parent(struct expression
*expr
);
530 void scoped_state(int my_id
, const char *name
, struct symbol
*sym
);
531 int is_error_return(struct expression
*expr
);
532 int getting_address(struct expression
*expr
);
533 int get_struct_and_member(struct expression
*expr
, const char **type
, const char **member
);
534 char *get_member_name(struct expression
*expr
);
535 char *get_fnptr_name(struct expression
*expr
);
536 int cmp_pos(struct position pos1
, struct position pos2
);
537 int positions_eq(struct position pos1
, struct position pos2
);
538 struct statement
*get_current_statement(void);
539 struct statement
*get_prev_statement(void);
540 struct expression
*get_last_expr_from_expression_stmt(struct expression
*expr
);
542 enum { RET_SUCCESS
, RET_FAIL
, RET_UNKNOWN
};
543 int success_fail_return(struct range_list
*rl
);
545 #define RETURN_VAR -1
546 #define LOCAL_SCOPE -2
547 #define FILE_SCOPE -3
548 #define GLOBAL_SCOPE -4
549 #define UNKNOWN_SCOPE -5
551 char *swap_names(const char *orig
, const char *remove
, const char *add
);
552 char *get_param_var_sym_var_sym(const char *name
, struct symbol
*sym
, struct expression
*ret_expr
, struct symbol
**sym_p
);
553 char *get_param_name_sym(struct expression
*expr
, struct symbol
**sym_p
);
554 int get_return_param_key_from_var_sym(const char *name
, struct symbol
*sym
,
555 struct expression
*ret_expr
,
557 int get_param_key_from_var_sym(const char *name
, struct symbol
*sym
,
558 struct expression
*ret_expr
,
560 int get_param_key_from_sm(struct sm_state
*sm
, struct expression
*ret_expr
,
562 int get_param_key_from_expr(struct expression
*expr
, struct expression
*ret_expr
,
564 const char *get_param_key_swap_dollar(struct expression
*expr
);
565 int map_to_param(const char *name
, struct symbol
*sym
);
566 int get_param_num_from_sym(struct symbol
*sym
);
567 int get_param_num(struct expression
*expr
);
568 struct symbol
*get_param_sym_from_num(int num
);
569 struct expression
*map_container_of_to_simpler_expr_key(struct expression
*expr
, const char *orig_key
, char **new_key
);
570 const char *get_container_of_str(struct expression
*expr
);
571 bool get_offset_param(const char *ret_str
, int *offset
, int *param
);
572 /* smatch_points_to_container.c */
573 struct expression
*get_stored_container(struct expression
*expr
, int offset
);
575 int ms_since(struct timeval
*start
);
576 int parent_is_gone_var_sym(const char *name
, struct symbol
*sym
);
577 int parent_is_gone(struct expression
*expr
);
578 bool is_noderef_ptr(struct expression
*expr
);
579 int invert_op(int op
);
580 int op_remove_assign(int op
);
581 int expr_equiv(struct expression
*one
, struct expression
*two
);
582 void push_int(struct int_stack
**stack
, int num
);
583 int pop_int(struct int_stack
**stack
);
584 bool macro_to_ul(const char *macro
, unsigned long *val
);
587 struct symbol
*get_real_base_type(struct symbol
*sym
);
588 int type_bytes(struct symbol
*type
);
589 int array_bytes(struct symbol
*type
);
590 struct symbol
*get_pointer_type(struct expression
*expr
);
591 struct symbol
*get_type(struct expression
*expr
);
592 struct symbol
*get_comparison_type(struct expression
*expr
);
593 struct symbol
*get_final_type(struct expression
*expr
);
594 struct symbol
*get_promoted_type(struct symbol
*left
, struct symbol
*right
);
595 int type_signed(struct symbol
*base_type
);
596 int expr_unsigned(struct expression
*expr
);
597 int expr_signed(struct expression
*expr
);
598 int returns_unsigned(struct symbol
*base_type
);
599 int is_pointer(struct expression
*expr
);
600 bool is_void_ptr(struct symbol
*type
);
601 int returns_pointer(struct symbol
*base_type
);
602 sval_t
sval_type_max(struct symbol
*base_type
);
603 sval_t
sval_type_min(struct symbol
*base_type
);
604 int nr_bits(struct expression
*expr
);
605 int is_void_pointer(struct expression
*expr
);
606 int is_char_pointer(struct expression
*expr
);
607 int is_string(struct expression
*expr
);
608 bool is_struct_ptr(struct symbol
*type
);
609 int is_static(struct expression
*expr
);
610 bool is_local_variable(struct expression
*expr
);
611 int types_equiv(struct symbol
*one
, struct symbol
*two
);
612 bool type_fits(struct symbol
*type
, struct symbol
*test
);
614 const char *global_static();
615 struct symbol
*cur_func_return_type(void);
616 struct symbol
*get_arg_type(struct expression
*fn
, int arg
);
617 struct symbol
*get_member_type_from_key(struct expression
*expr
, const char *key
);
618 struct symbol
*get_arg_type_from_key(struct expression
*fn
, int param
, struct expression
*arg
, const char *key
);
619 int is_struct(struct expression
*expr
);
620 char *type_to_str(struct symbol
*type
);
622 /* smatch_ignore.c */
623 void add_ignore(int owner
, const char *name
, struct symbol
*sym
);
624 int is_ignored(int owner
, const char *name
, struct symbol
*sym
);
625 void add_ignore_expr(int owner
, struct expression
*expr
);
626 int is_ignored_expr(int owner
, struct expression
*expr
);
629 struct smatch_state
*alloc_var_sym_state(const char *var
, struct symbol
*sym
);
630 struct var_sym
*alloc_var_sym(const char *var
, struct symbol
*sym
);
631 struct var_sym_list
*expr_to_vsl(struct expression
*expr
);
632 void add_var_sym(struct var_sym_list
**list
, const char *var
, struct symbol
*sym
);
633 void add_var_sym_expr(struct var_sym_list
**list
, struct expression
*expr
);
634 void del_var_sym(struct var_sym_list
**list
, const char *var
, struct symbol
*sym
);
635 int in_var_sym_list(struct var_sym_list
*list
, const char *var
, struct symbol
*sym
);
636 struct var_sym_list
*clone_var_sym_list(struct var_sym_list
*from_vsl
);
637 void merge_var_sym_list(struct var_sym_list
**dest
, struct var_sym_list
*src
);
638 struct var_sym_list
*combine_var_sym_lists(struct var_sym_list
*one
, struct var_sym_list
*two
);
639 int var_sym_lists_equiv(struct var_sym_list
*one
, struct var_sym_list
*two
);
640 void free_var_sym_list(struct var_sym_list
**list
);
641 void free_var_syms_and_list(struct var_sym_list
**list
);
644 struct tracker
*alloc_tracker(int owner
, const char *name
, struct symbol
*sym
);
645 void add_tracker(struct tracker_list
**list
, int owner
, const char *name
,
647 void add_tracker_expr(struct tracker_list
**list
, int owner
, struct expression
*expr
);
648 void del_tracker(struct tracker_list
**list
, int owner
, const char *name
,
650 int in_tracker_list(struct tracker_list
*list
, int owner
, const char *name
,
652 void free_tracker_list(struct tracker_list
**list
);
653 void free_trackers_and_list(struct tracker_list
**list
);
655 /* smatch_conditions */
656 int in_condition(void);
660 extern int __in_fake_assign
;
661 extern int __in_fake_parameter_assign
;
662 extern int __in_fake_struct_assign
;
663 extern int __in_buf_clear
;
664 extern int __in_fake_var_assign
;
665 extern int __in_builtin_overflow_func
;
666 extern int __fake_state_cnt
;
667 extern int __debug_skip
;
668 extern int in_fake_env
;
669 bool is_fake_var_assign(struct expression
*expr
);
670 void smatch (struct string_list
*filelist
);
671 int inside_loop(void);
672 int definitely_inside_loop(void);
673 struct expression
*get_switch_expr(void);
674 int in_expression_statement(void);
675 void __process_post_op_stack(void);
676 void __split_expr(struct expression
*expr
);
677 void __split_label_stmt(struct statement
*stmt
);
678 void __split_stmt(struct statement
*stmt
);
679 extern int __in_function_def
;
680 extern int __in_unmatched_hook
;
681 extern int option_assume_loops
;
682 extern int option_two_passes
;
683 extern int option_no_db
;
684 extern int option_file_output
;
685 extern int option_time
;
686 extern int option_time_stmt
;
687 extern struct expression_list
*big_expression_stack
;
688 extern struct expression_list
*big_condition_stack
;
689 extern struct statement_list
*big_statement_stack
;
690 int is_condition_call(struct expression
*expr
);
691 int is_assigned_call(struct expression
*expr
);
692 int is_fake_assigned_call(struct expression
*expr
);
693 void add_function_data(unsigned long *fn_data
);
694 int inlinable(struct expression
*expr
);
695 extern int __inline_call
;
696 extern struct expression
*__inline_fn
;
697 extern int __in_pre_condition
;
698 extern int __bail_on_rest_of_function
;
699 extern struct statement
*__prev_stmt
;
700 extern struct statement
*__cur_stmt
;
701 extern struct statement
*__next_stmt
;
702 void init_fake_env(void);
703 void end_fake_env(void);
704 int time_parsing_function(void);
705 bool taking_too_long(void);
706 struct statement
*get_last_stmt(void);
707 int is_last_stmt(struct statement
*cur_stmt
);
709 /* smatch_struct_assignment.c */
710 struct expression
*get_faked_expression(void);
711 void __fake_struct_member_assignments(struct expression
*expr
);
712 void create_recursive_fake_assignments(struct expression
*expr
,
713 void (*assign_handler
)(struct expression
*expr
, void *data
),
716 /* smatch_project.c */
717 int is_no_inline_function(const char *function
);
719 /* smatch_conditions */
720 void __split_whole_condition(struct expression
*expr
);
721 void __handle_logic(struct expression
*expr
);
722 int is_condition(struct expression
*expr
);
723 int __handle_condition_assigns(struct expression
*expr
);
724 int __handle_select_assigns(struct expression
*expr
);
725 int __handle_expr_statement_assigns(struct expression
*expr
);
727 /* smatch_implied.c */
728 struct range_list_stack
;
729 void param_limit_implications(struct expression
*expr
, int param
, char *key
, char *value
, struct stree
**implied
);
730 struct stree
*__implied_case_stree(struct expression
*switch_expr
,
731 struct range_list
*case_rl
,
732 struct range_list_stack
**remaining_cases
,
733 struct stree
**raw_stree
);
734 void overwrite_states_using_pool(struct sm_state
*gate_sm
, struct sm_state
*pool_sm
);
735 int assume(struct expression
*expr
);
736 void end_assume(void);
737 int impossible_assumption(struct expression
*left
, int op
, sval_t sval
);
740 bool has_dynamic_states(unsigned short owner
);
741 void set_dynamic_states(unsigned short owner
);
743 /* smatch_extras.c */
744 int in_warn_on_macro(void);
745 extern int SMATCH_EXTRA
;
746 extern int RETURN_ID
;
753 char *get_other_name_sym(const char *name
, struct symbol
*sym
, struct symbol
**new_sym
);
754 char *map_call_to_other_name_sym(const char *name
, struct symbol
*sym
, struct symbol
**new_sym
);
755 char *map_long_to_short_name_sym(const char *name
, struct symbol
*sym
, struct symbol
**new_sym
, bool use_stack
);
757 #define STRLEN_MAX_RET 1010101
759 /* smatch_absolute.c */
760 int get_absolute_min_helper(struct expression
*expr
, sval_t
*sval
);
761 int get_absolute_max_helper(struct expression
*expr
, sval_t
*sval
);
763 /* smatch_type_value.c */
764 void disable_type_val_lookups(void);
765 void enable_type_val_lookups(void);
766 void clear_type_value_cache(void);
767 int get_db_type_rl(struct expression
*expr
, struct range_list
**rl
);
769 /* smatch_data_val.c */
770 int get_mtag_rl(struct expression
*expr
, struct range_list
**rl
);
771 /* smatch_array_values.c */
772 void clear_array_values_cache(void);
773 int get_array_rl(struct expression
*expr
, struct range_list
**rl
);
775 /* smatch_states.c */
776 struct stree
*__swap_cur_stree(struct stree
*stree
);
777 void __push_fake_cur_stree();
778 struct stree
*__pop_fake_cur_stree();
779 void __free_fake_cur_stree();
780 void __set_fake_cur_stree_fast(struct stree
*stree
);
781 void __pop_fake_cur_stree_fast(void);
782 void __merge_stree_into_cur(struct stree
*stree
);
784 int unreachable(void);
785 void __set_cur_stree_readonly(void);
786 void __set_cur_stree_writable(void);
787 void __set_sm(struct sm_state
*sm
);
788 void __set_sm_cur_stree(struct sm_state
*sm
);
789 void __set_true_false_sm(struct sm_state
*true_state
,
790 struct sm_state
*false_state
);
791 void nullify_path(void);
792 void __match_nullify_path_hook(const char *fn
, struct expression
*expr
,
794 void __unnullify_path(void);
795 int __path_is_null(void);
796 void save_all_states(void);
797 void restore_all_states(void);
798 void free_goto_stack(void);
799 void clear_all_states(void);
801 struct sm_state
*get_sm_state(int owner
, const char *name
,
803 struct sm_state
*get_sm_state_expr(int owner
, struct expression
*expr
);
804 void __push_true_states(void);
805 void __use_false_states(void);
806 void __discard_false_states(void);
807 void __merge_false_states(void);
808 void __merge_true_states(void);
810 void __negate_cond_stacks(void);
811 void __use_pre_cond_states(void);
812 void __use_cond_true_states(void);
813 void __use_cond_false_states(void);
814 void __push_cond_stacks(void);
815 void __fold_in_set_states(void);
816 void __free_set_states(void);
817 struct stree
*__copy_cond_true_states(void);
818 struct stree
*__copy_cond_false_states(void);
819 struct stree
*__pop_cond_true_stack(void);
820 struct stree
*__pop_cond_false_stack(void);
821 void __and_cond_states(void);
822 void __or_cond_states(void);
823 void __save_pre_cond_states(void);
824 void __discard_pre_cond_states(void);
825 struct stree
*__get_true_states(void);
826 struct stree
*__get_false_states(void);
827 void __use_cond_states(void);
828 extern struct state_list
*__last_base_slist
;
830 void __push_continues(void);
831 void __discard_continues(void);
832 void __process_continues(void);
833 void __merge_continues(void);
835 void __push_breaks(void);
836 void __process_breaks(void);
837 int __has_breaks(void);
838 void __merge_breaks(void);
839 void __use_breaks(void);
841 void __save_switch_states(struct expression
*switch_expr
);
842 void __discard_switches(void);
843 int have_remaining_cases(void);
844 void __merge_switches(struct expression
*switch_expr
, struct range_list
*case_rl
);
845 void __push_default(void);
846 void __set_default(void);
847 bool __has_default_case(void);
848 int __pop_default(void);
850 void __push_conditions(void);
851 void __discard_conditions(void);
853 void __save_gotos(const char *name
, struct symbol
*sym
);
854 void __merge_gotos(const char *name
, struct symbol
*sym
);
856 void __discard_fake_states(struct expression
*call
);
858 void __print_cur_stree(void);
859 bool __print_states(const char *owner
);
860 typedef void (check_tracker_hook
)(int owner
, const char *name
, struct symbol
*sym
, struct smatch_state
*state
);
861 void add_check_tracker(const char *check_name
, check_tracker_hook
*fn
);
864 void __pass_to_client(void *data
, enum hook_type type
);
865 void __pass_case_to_client(struct expression
*switch_expr
,
866 struct range_list
*rl
);
867 int __has_merge_function(int client_id
);
868 struct smatch_state
*__client_merge_function(int owner
,
869 struct smatch_state
*s1
,
870 struct smatch_state
*s2
);
871 struct smatch_state
*__client_unmatched_state_function(struct sm_state
*sm
);
872 void call_pre_merge_hook(struct sm_state
*cur
, struct sm_state
*other
);
873 void __push_scope_hooks(void);
874 void __call_scope_hooks(void);
875 void add_array_initialized_hook(void (*hook
)(struct expression
*array
, int nr
));
876 void __call_array_initialized_hooks(struct expression
*array
, int nr
);
878 /* smatch_function_hooks.c */
879 void add_fake_call_after_return(struct expression
*call
);
880 void create_function_hook_hash(void);
881 void __match_initializer_call(struct symbol
*sym
);
883 struct expression
*get_unfaked_call(void);
884 void fake_param_assign_helper(struct expression
*call
, struct expression
*fake_assign
);
890 * Changing these numbers is a pain. Don't do it. If you ever use a
891 * number it can't be re-used right away so there may be gaps.
892 * We select these in order by type so if the order matters, then give
893 * it a number below 100-999,9000-9999 ranges. */
908 ABSOLUTE_LIMITS
= 1010,
922 UNTRACKED_PARAM
= 1023,
928 COMPARE_LIMIT
= 1028,
929 PARAM_COMPARE
= 1029,
932 CONSTRAINT_REQUIRED
= 1033,
943 POWER_OF_TWO_SET
= 1049,
949 NEGATIVE_ERROR
= 1057,
952 /* put random temporary stuff in the 7000-7999 range for testing */
954 HOST_DATA_SET
= 7017,
958 USER_DATA_SET
= 9017,
962 NO_OVERFLOW_SIMPLE
= 8019,
968 KNOWN_UNLOCKED
= 9025,
973 REFCOUNT_INIT
= 9025,
976 NO_SIDE_EFFECT
= 8025,
979 ARRAYSIZE_ARG
= 8033,
992 /* Do not use numbers above 100k */
995 extern struct sqlite3
*smatch_db
;
996 extern struct sqlite3
*mem_db
;
997 extern struct sqlite3
*cache_db
;
999 bool db_incomplete(void);
1000 void db_ignore_states(int id
);
1001 typedef bool (delete_hook
)(struct expression
*expr
);
1002 void add_delete_return_hook(delete_hook
*hook
);
1003 void select_caller_info_hook(void (*callback
)(const char *name
, struct symbol
*sym
, char *key
, char *value
), int type
);
1004 void select_caller_name_sym(void (*fn
)(const char *name
, struct symbol
*sym
, char *value
), int type
);
1005 void add_member_info_callback(int owner
, void (*callback
)(struct expression
*call
, int param
, char *printed_name
, struct sm_state
*sm
));
1006 void add_caller_info_callback(int owner
, void (*callback
)(struct expression
*call
, int param
, char *printed_name
, struct sm_state
*sm
));
1007 void add_return_info_callback(int owner
,
1008 void (*callback
)(int return_id
, char *return_ranges
,
1009 struct expression
*returned_expr
,
1011 const char *printed_name
,
1012 struct sm_state
*sm
));
1013 void add_split_return_callback(void (*fn
)(int return_id
, char *return_ranges
, struct expression
*returned_expr
));
1014 void add_returned_member_callback(int owner
, void (*callback
)(int return_id
, char *return_ranges
, struct expression
*expr
, char *printed_name
, struct smatch_state
*state
));
1015 void select_call_implies_hook(int type
, void (*callback
)(struct expression
*call
, struct expression
*arg
, char *key
, char *value
));
1016 void select_return_implies_hook_early(int type
, void (*callback
)(struct expression
*call
, struct expression
*arg
, char *key
, char *value
));
1017 void select_return_implies_hook(int type
, void (*callback
)(struct expression
*call
, struct expression
*arg
, char *key
, char *value
));
1018 struct range_list
*db_return_vals(struct expression
*expr
);
1019 struct range_list
*db_return_vals_from_str(const char *fn_name
);
1020 struct range_list
*db_return_vals_no_args(struct expression
*expr
);
1021 bool split_param_key(const char *value
, int *param
, char *key
, int len
);
1022 bool get_implied_rl_from_call_str(struct expression
*expr
, const char *data
, struct range_list
**rl
);
1023 char *get_chunk_from_key(struct expression
*arg
, char *key
, struct symbol
**sym
, struct var_sym_list
**vsl
);
1024 char *get_variable_from_key(struct expression
*arg
, const char *key
, struct symbol
**sym
);
1025 char *get_name_sym_from_param_key(struct expression
*expr
, int param
, const char *key
, struct symbol
**sym
);
1026 char *get_param_name_var_sym(const char *name
, struct symbol
*sym
);
1027 char *get_param_name(struct sm_state
*sm
);
1028 const char *get_mtag_name_var_sym(const char *state_name
, struct symbol
*sym
);
1029 const char *get_mtag_name_expr(struct expression
*expr
);
1030 char *get_data_info_name(struct expression
*expr
);
1031 char *sm_to_arg_name(struct expression
*expr
, struct sm_state
*sm
);
1032 int is_recursive_member(const char *param_name
);
1034 char *escape_newlines(const char *str
);
1035 void sql_exec(struct sqlite3
*db
, int (*callback
)(void*, int, char**, char**), void *data
, const char *sql
);
1037 #define sql_helper(db, call_back, data, sql...) \
1039 char sql_txt[1024]; \
1041 sqlite3_snprintf(sizeof(sql_txt), sql_txt, sql); \
1042 db_debug("debug: %s\n", sql_txt); \
1043 sql_exec(db, call_back, data, sql_txt); \
1047 #define run_sql(call_back, data, sql...) \
1051 sql_helper(smatch_db, call_back, data, sql); \
1054 #define mem_sql(call_back, data, sql...) \
1055 sql_helper(mem_db, call_back, data, sql)
1057 #define cache_sql(call_back, data, sql...) \
1058 sql_helper(cache_db, call_back, data, sql)
1060 #define sql_insert_helper(table, db, ignore, late, values...) \
1062 struct sqlite3 *_db = db; \
1064 if (__inline_fn && !_db) \
1068 char *err, *p = buf; \
1071 p += snprintf(p, buf + sizeof(buf) - p, \
1072 "insert %sinto %s values (", \
1073 ignore ? "or ignore " : "", #table); \
1074 p += snprintf(p, buf + sizeof(buf) - p, values); \
1075 p += snprintf(p, buf + sizeof(buf) - p, ");"); \
1076 db_debug("mem-db: %s\n", buf); \
1077 rc = sqlite3_exec(_db, buf, NULL, NULL, &err); \
1078 if (rc != SQLITE_OK) { \
1079 sm_ierror("SQL error #2: %s", err); \
1080 sm_ierror("SQL: '%s'", buf); \
1085 if (option_info) { \
1086 FILE *tmp_fd = sm_outfd; \
1087 sm_outfd = sql_outfd; \
1089 sm_printf("SQL%s: insert %sinto " #table " values(", \
1090 late ? "_late" : "", ignore ? "or ignore " : ""); \
1091 sm_printf(values); \
1092 sm_printf(");\n"); \
1093 sm_outfd = tmp_fd; \
1097 #define sql_insert(table, values...) sql_insert_helper(table, NULL, 0, 0, values);
1098 #define sql_insert_or_ignore(table, values...) sql_insert_helper(table, NULL, 1, 0, values);
1099 #define sql_insert_late(table, values...) sql_insert_helper(table, NULL, 0, 1, values);
1100 #define sql_insert_cache(table, values...) sql_insert_helper(table, cache_db, 1, 0, values);
1101 #define sql_insert_cache_or_ignore(table, values...) sql_insert_helper(table, cache_db, 1, 0, values);
1103 char *get_static_filter(struct symbol
*sym
);
1105 void sql_insert_return_states(int return_id
, const char *return_ranges
,
1106 int type
, int param
, const char *key
, const char *value
);
1107 void sql_insert_caller_info(struct expression
*call
, int type
, int param
,
1108 const char *key
, const char *value
);
1109 void sql_insert_function_ptr(const char *fn
, const char *struct_name
);
1110 void sql_insert_return_values(const char *return_values
);
1111 void sql_insert_return_implies(int type
, int param
, const char *key
, const char *value
);
1112 void sql_insert_function_type_size(const char *member
, const char *ranges
);
1113 void sql_insert_function_type_info(int type
, const char *struct_type
, const char *member
, const char *value
);
1114 void sql_insert_type_info(int type
, const char *member
, const char *value
);
1115 void sql_insert_local_values(const char *name
, const char *value
);
1116 void sql_insert_function_type_value(const char *type
, const char *value
);
1117 void sql_insert_function_type(int param
, const char *value
);
1118 void sql_insert_parameter_name(int param
, const char *value
);
1119 void sql_insert_data_info(struct expression
*data
, int type
, const char *value
);
1120 void sql_insert_data_info_var_sym(const char *var
, struct symbol
*sym
, int type
, const char *value
);
1121 void sql_save_constraint(const char *con
);
1122 void sql_save_constraint_required(const char *data
, int op
, const char *limit
);
1123 void sql_copy_constraint_required(const char *new_limit
, const char *old_limit
);
1124 void sql_insert_fn_ptr_data_link(const char *ptr
, const char *data
);
1125 void sql_insert_fn_data_link(struct expression
*fn
, int type
, int param
, const char *key
, const char *value
);
1126 void sql_insert_mtag_about(mtag_t tag
, const char *left_name
, const char *right_name
);
1127 void sql_insert_mtag_info(mtag_t tag
, int type
, const char *value
);
1128 void sql_insert_mtag_map(mtag_t container
, int container_offset
, mtag_t tag
, int tag_offset
);
1129 void sql_insert_mtag_alias(mtag_t orig
, mtag_t alias
);
1130 int mtag_map_select_container(mtag_t tag
, int container_offset
, mtag_t
*container
);
1131 int mtag_map_select_tag(mtag_t container
, int offset
, mtag_t
*tag
);
1132 struct smatch_state
*get_mtag_return(struct expression
*expr
, struct smatch_state
*state
);
1133 struct range_list
*swap_mtag_seed(struct expression
*expr
, struct range_list
*rl
);
1135 bool is_fn_ptr(struct expression
*fn
);
1136 void sql_select_return_states(const char *cols
, struct expression
*call
,
1137 int (*callback
)(void*, int, char**, char**), void *info
);
1138 void sql_select_call_implies(const char *cols
, struct expression
*call
,
1139 int (*callback
)(void*, int, char**, char**));
1141 void open_smatch_db(char *db_file
);
1143 /* smatch_files.c */
1144 int open_data_file(const char *filename
);
1145 int open_schema_file(const char *schema
);
1146 struct token
*get_tokens_file(const char *filename
);
1147 struct string_list
*load_strings_from_file(const char *project
, const char *filename
);
1150 extern char *option_debug_check
;
1151 extern char *option_debug_var
;
1152 extern char *option_process_function
;
1153 extern char *option_project_str
;
1154 extern char *bin_dir
;
1155 extern char *data_dir
;
1156 extern int option_no_data
;
1157 extern int option_full_path
;
1158 extern int option_call_tree
;
1159 extern int num_checks
;
1165 PROJ_ILLUMOS_KERNEL
,
1169 extern enum project_type option_project
;
1170 const char *check_name(unsigned short id
);
1171 int id_from_name(const char *name
);
1174 /* smatch_buf_size.c */
1175 int bytes_to_elements(struct expression
*expr
, int bytes
);
1176 int get_array_size(struct expression
*expr
);
1177 int get_array_size_bytes(struct expression
*expr
);
1178 int get_array_size_bytes_min(struct expression
*expr
);
1179 int get_array_size_bytes_max(struct expression
*expr
);
1180 struct range_list
*get_array_size_bytes_rl(struct expression
*expr
);
1181 int get_real_array_size(struct expression
*expr
);
1182 int last_member_is_resizable(struct symbol
*type
);
1183 /* smatch_strlen.c */
1184 bool is_strlen(struct expression
*expr
);
1185 int get_implied_strlen(struct expression
*expr
, struct range_list
**rl
);
1186 int get_size_from_strlen(struct expression
*expr
);
1188 /* smatch_capped.c */
1189 int is_capped(struct expression
*expr
);
1190 int is_capped_var_sym(const char *name
, struct symbol
*sym
);
1192 /* smatch_kernel_user_data.c */
1193 int is_user_macro(struct expression
*expr
);
1194 int is_capped_user_data(struct expression
*expr
);
1195 int implied_user_data(struct expression
*expr
, struct range_list
**rl
);
1196 struct stree
*get_user_stree(void);
1197 int get_user_rl(struct expression
*expr
, struct range_list
**rl
);
1198 int is_user_rl(struct expression
*expr
);
1199 int get_user_rl_var_sym(const char *name
, struct symbol
*sym
, struct range_list
**rl
);
1200 void mark_as_user_data(struct expression
*expr
, bool isnew
);
1201 bool user_rl_capped_var_sym(const char *name
, struct symbol
*sym
);
1202 bool user_rl_capped(struct expression
*expr
);
1203 struct range_list
*var_user_rl(struct expression
*expr
);
1204 bool we_pass_user_data(struct expression
*call
);
1205 /* smatch_points_to_user_data.c */
1206 bool is_user_data_fn(struct symbol
*fn
);
1207 bool is_skb_data(struct expression
*expr
);
1208 bool is_socket_stuff(struct symbol
*sym
);
1209 bool points_to_user_data(struct expression
*expr
);
1210 void set_array_user_ptr(struct expression
*expr
, bool is_new
);
1212 /* smatch_kernel_host_data.c */
1213 int is_host_macro(struct expression
*expr
);
1214 int get_host_data_fn_param(const char *fn
);
1215 int is_capped_host_data(struct expression
*expr
);
1216 int implied_host_data(struct expression
*expr
, struct range_list
**rl
);
1217 struct stree
*get_host_stree(void);
1218 int get_host_rl(struct expression
*expr
, struct range_list
**rl
);
1219 int is_host_rl(struct expression
*expr
);
1220 int get_host_rl_var_sym(const char *name
, struct symbol
*sym
, struct range_list
**rl
);
1221 bool host_rl_capped(struct expression
*expr
);
1222 struct range_list
*var_host_rl(struct expression
*expr
);
1223 bool we_pass_host_data(struct expression
*call
);
1224 /* smatch_points_to_host_data.c */
1225 bool is_host_data_fn(struct symbol
*fn
);
1226 bool points_to_host_data(struct expression
*expr
);
1227 void set_points_to_host_data(struct expression
*expr
, bool is_new
);
1228 bool is_fn_points_to_host_data(const char *fn
);
1229 /* check_locking.c */
1230 void print_held_locks();
1232 void __preempt_add(void);
1233 void __preempt_sub(void);
1234 int get_preempt_cnt(void);
1235 void clear_preempt_cnt(void);
1236 bool function_decrements_preempt(void);
1237 void add_sleep_callback(expr_func
*fn
);
1238 unsigned long GFP_DIRECT_RECLAIM(void);
1239 unsigned long GFP_ATOMIC(void);
1241 /* check_assigned_expr.c */
1242 extern int check_assigned_expr_id
;
1243 struct expression
*get_assigned_expr(struct expression
*expr
);
1244 struct sm_state
*get_assigned_sm(struct expression
*expr
);
1245 struct expression
*get_assigned_expr_recurse(struct expression
*expr
);
1246 struct expression
*get_assigned_expr_name_sym(const char *name
, struct symbol
*sym
);
1247 struct expression
*get_assigned_expr_name_sym_recurse(const char *name
, struct symbol
*sym
);
1249 /* smatch_return_to_param.c */
1250 char *map_call_to_param_name_sym(struct expression
*expr
, struct symbol
**sym
);
1252 /* smatch_comparison.c */
1253 extern int comparison_id
;
1254 #define UNKNOWN_COMPARISON 0
1255 #define IMPOSSIBLE_COMPARISON -1
1256 struct compare_data
{
1257 /* The ->left and ->right expression pointers might be NULL (I'm lazy) */
1258 struct expression
*left
;
1259 const char *left_var
;
1260 struct var_sym_list
*left_vsl
;
1262 struct expression
*right
;
1263 const char *right_var
;
1264 struct var_sym_list
*right_vsl
;
1266 DECLARE_ALLOCATOR(compare_data
);
1267 struct smatch_state
*alloc_compare_state(
1268 struct expression
*left
,
1269 const char *left_var
, struct var_sym_list
*left_vsl
,
1271 struct expression
*right
,
1272 const char *right_var
, struct var_sym_list
*right_vsl
);
1273 int comparison_intersection(int orig
, int op
);
1274 int merge_comparisons(int one
, int two
);
1275 int combine_comparisons(int left_compare
, int right_compare
);
1276 int state_to_comparison(struct smatch_state
*state
);
1277 struct smatch_state
*merge_compare_states(struct smatch_state
*s1
, struct smatch_state
*s2
);
1278 int get_comparison(struct expression
*left
, struct expression
*right
);
1279 int get_comparison_no_extra(struct expression
*a
, struct expression
*b
);
1280 int get_comparison_strings(const char *one
, const char *two
);
1281 int possible_comparison(struct expression
*a
, int comparison
, struct expression
*b
);
1282 struct state_list
*get_all_comparisons(struct expression
*expr
);
1283 struct state_list
*get_all_possible_equal_comparisons(struct expression
*expr
);
1284 void __add_comparison_info(struct expression
*expr
, struct expression
*call
, const char *range
);
1285 char *get_printed_param_name(struct expression
*call
, const char *param_name
, struct symbol
*param_sym
);
1286 char *name_sym_to_param_comparison(const char *name
, struct symbol
*sym
);
1287 char *expr_equal_to_param(struct expression
*expr
, int ignore
);
1288 char *expr_lte_to_param(struct expression
*expr
, int ignore
);
1289 char *expr_param_comparison(struct expression
*expr
, int ignore
);
1290 int flip_comparison(int op
);
1291 int negate_comparison(int op
);
1292 int remove_unsigned_from_comparison(int op
);
1293 int param_compare_limit_is_impossible(struct expression
*expr
, int left_param
, char *left_key
, char *value
);
1294 void filter_by_comparison(struct range_list
**rl
, int comparison
, struct range_list
*right
);
1295 void __compare_param_limit_hook(struct expression
*left_expr
, struct expression
*right_expr
,
1296 const char *state_name
,
1297 struct smatch_state
*true_state
, struct smatch_state
*false_state
);
1298 int impossibly_high_comparison(struct expression
*expr
);
1299 void add_comparison_var_sym(
1300 struct expression
*left_expr
,
1301 const char *left_name
, struct var_sym_list
*left_vsl
,
1303 struct expression
*right_expr
,
1304 const char *right_name
, struct var_sym_list
*right_vsl
,
1305 struct expression
*mod_expr
);
1308 sval_t
*sval_alloc(sval_t sval
);
1309 sval_t
*sval_alloc_permanent(sval_t sval
);
1310 sval_t
sval_blank(struct expression
*expr
);
1311 sval_t
sval_type_val(struct symbol
*type
, long long val
);
1312 sval_t
sval_type_fval(struct symbol
*type
, long double fval
);
1313 sval_t
sval_from_val(struct expression
*expr
, long long val
);
1314 sval_t
sval_from_fval(struct expression
*expr
, long double fval
);
1315 int sval_is_ptr(sval_t sval
);
1316 bool sval_is_fp(sval_t sval
);
1317 int sval_unsigned(sval_t sval
);
1318 int sval_signed(sval_t sval
);
1319 int sval_bits(sval_t sval
);
1320 int sval_bits_used(sval_t sval
);
1321 int sval_is_negative(sval_t sval
);
1322 int sval_is_positive(sval_t sval
);
1323 int sval_is_min(sval_t sval
);
1324 int sval_is_max(sval_t sval
);
1325 int sval_is_a_min(sval_t sval
);
1326 int sval_is_a_max(sval_t sval
);
1327 int sval_is_negative_min(sval_t sval
);
1328 int sval_cmp_t(struct symbol
*type
, sval_t one
, sval_t two
);
1329 int sval_cmp_val(sval_t one
, long long val
);
1330 sval_t
sval_min(sval_t one
, sval_t two
);
1331 sval_t
sval_min_nonneg(sval_t one
, sval_t two
);
1332 sval_t
sval_max(sval_t one
, sval_t two
);
1333 int sval_too_low(struct symbol
*type
, sval_t sval
);
1334 int sval_too_high(struct symbol
*type
, sval_t sval
);
1335 int sval_fits(struct symbol
*type
, sval_t sval
);
1336 sval_t
sval_cast(struct symbol
*type
, sval_t sval
);
1337 sval_t
sval_preop(sval_t sval
, int op
);
1338 sval_t
sval_binop(sval_t left
, int op
, sval_t right
);
1339 int sval_binop_overflows(sval_t left
, int op
, sval_t right
);
1340 int sval_binop_overflows_no_sign(sval_t left
, int op
, sval_t right
);
1341 int find_first_zero_bit(unsigned long long uvalue
);
1342 int sm_fls64(unsigned long long uvalue
);
1343 unsigned long long fls_mask(unsigned long long uvalue
);
1344 unsigned long long sval_fls_mask(sval_t sval
);
1345 const char *sval_to_str(sval_t sval
);
1346 const char *sval_to_str_or_err_ptr(sval_t sval
);
1347 const char *sval_to_numstr(sval_t sval
);
1348 sval_t
ll_to_sval(long long val
);
1350 /* smatch_string_list.c */
1351 int list_has_string(struct string_list
*str_list
, const char *str
);
1352 int insert_string(struct string_list
**str_list
, const char *str
);
1353 struct string_list
*clone_str_list(struct string_list
*orig
);
1354 struct string_list
*combine_string_lists(struct string_list
*one
, struct string_list
*two
);
1356 /* smatch_start_states.c */
1357 struct stree
*get_start_states(void);
1359 /* smatch_recurse.c */
1360 int recurse(struct expression
*expr
,
1361 int (func
)(struct expression
*expr
, void *p
),
1362 void *param
, int nr
);
1363 int has_symbol(struct expression
*expr
, struct symbol
*sym
);
1364 int has_variable(struct expression
*expr
, struct expression
*var
);
1365 int has_inc_dec(struct expression
*expr
);
1367 /* smatch_stored_conditions.c */
1368 struct smatch_state
*get_stored_condition(struct expression
*expr
);
1369 struct expression_list
*get_conditions(struct expression
*expr
);
1370 struct sm_state
*stored_condition_implication_hook(struct expression
*expr
,
1371 struct state_list
**true_stack
,
1372 struct state_list
**false_stack
);
1373 /* smatch_parsed_conditions.c */
1374 struct sm_state
*parsed_condition_implication_hook(struct expression
*expr
,
1375 struct state_list
**true_stack
,
1376 struct state_list
**false_stack
);
1377 /* smatch_comparison.c */
1378 struct sm_state
*comparison_implication_hook(struct expression
*expr
,
1379 struct state_list
**true_stack
,
1380 struct state_list
**false_stack
);
1382 /* check_string_len.c */
1383 int get_formatted_string_size(struct expression
*call
, int arg
);
1384 int get_formatted_string_min_size(struct expression
*call
, int arg
);
1386 /* smatch_param_set.c */
1387 int param_was_set(struct expression
*expr
);
1388 int param_was_set_var_sym(const char *name
, struct symbol
*sym
);
1389 void print_limited_param_set(int return_id
, char *return_ranges
, struct expression
*expr
);
1391 void __promote_sets_to_clears(int return_id
, char *return_ranges
, struct expression
*expr
);
1392 bool parent_was_PARAM_CLEAR(const char *name
, struct symbol
*sym
);
1393 bool parent_was_PARAM_CLEAR_ZERO(const char *name
, struct symbol
*sym
);
1395 /* smatch_param_filter.c */
1396 int param_has_filter_data(struct sm_state
*sm
);
1398 /* smatch_links.c */
1399 void set_up_link_functions(int id
, int linkid
);
1400 struct smatch_state
*merge_link_states(struct smatch_state
*s1
, struct smatch_state
*s2
);
1401 void store_link(int link_id
, const char *name
, struct symbol
*sym
, const char *link_name
, struct symbol
*link_sym
);
1403 /* check_buf_comparison */
1404 const char *limit_type_str(unsigned int limit_type
);
1405 struct expression
*get_size_variable(struct expression
*buf
, int *limit_type
);
1406 struct expression
*get_array_variable(struct expression
*size
);
1407 int buf_comparison_index_ok(struct expression
*expr
);
1408 bool buf_comp_has_bytes(struct expression
*buf
, struct expression
*var
);
1409 bool buf_comp2_has_bytes(struct expression
*buf_expr
, struct expression
*var
);
1411 /* smatch_untracked_param.c */
1412 void mark_untracked(struct expression
*expr
, int param
, const char *key
, const char *value
);
1413 void add_untracked_param_hook(void (func
)(struct expression
*call
, int param
));
1414 void add_lost_param_hook(void (func
)(struct expression
*call
, int param
));
1415 void mark_all_params_untracked(int return_id
, char *return_ranges
, struct expression
*expr
);
1416 /* smatch_untracked_var.c */
1417 bool is_untracked(struct expression
*expr
);
1419 /* smatch_strings.c */
1420 struct state_list
*get_strings(struct expression
*expr
);
1421 struct expression
*fake_string_from_mtag(mtag_t tag
);
1423 /* smatch_estate.c */
1424 int estate_get_single_value(struct smatch_state
*state
, sval_t
*sval
);
1426 /* smatch_address.c */
1427 int get_address_rl(struct expression
*expr
, struct range_list
**rl
);
1428 int get_member_offset(struct symbol
*type
, const char *member_name
);
1429 int get_member_offset_from_deref(struct expression
*expr
);
1431 /* for now this is in smatch_used_parameter.c */
1432 void __get_state_hook(int owner
, const char *name
, struct symbol
*sym
);
1433 extern int __ignore_param_used
;
1435 /* smatch_buf_comparison.c */
1436 int db_var_is_array_limit(struct expression
*array
, const char *name
, struct var_sym_list
*vsl
);
1438 struct range_list
*get_fs(void);
1440 struct stree
*get_all_return_states(void);
1441 struct stree_stack
*get_all_return_strees(void);
1442 int on_atomic_dec_path(void);
1443 int was_inced(const char *name
, struct symbol
*sym
);
1444 void set_refcount_inc(char *name
, struct symbol
*sym
);
1445 void set_refcount_dec(char *name
, struct symbol
*sym
);
1446 void add_refcount_init_hook(name_sym_hook
*hook
);
1447 void add_refcount_inc_hook(name_sym_hook
*hook
);
1448 void add_refcount_dec_hook(name_sym_hook
*hook
);
1450 /* smatch_constraints.c */
1451 char *get_constraint_str(struct expression
*expr
);
1452 struct constraint_list
*get_constraints(struct expression
*expr
);
1453 char *unmet_constraint(struct expression
*data
, struct expression
*offset
);
1454 char *get_required_constraint(const char *data_str
);
1456 /* smatch_container_of.c */
1457 int get_param_from_container_of(struct expression
*expr
);
1458 int get_offset_from_container_of(struct expression
*expr
);
1459 char *get_container_name(struct expression
*container
, struct expression
*expr
);
1462 unsigned long long str_to_llu_hash_helper(const char *str
);
1463 unsigned long long str_to_llu_hash(const char *str
);
1464 mtag_t
str_to_mtag(const char *str
);
1465 int get_string_mtag(struct expression
*expr
, mtag_t
*tag
);
1466 int get_toplevel_mtag(struct symbol
*sym
, mtag_t
*tag
);
1467 int create_mtag_alias(mtag_t tag
, struct expression
*expr
, mtag_t
*new);
1468 int expr_to_mtag_offset(struct expression
*expr
, mtag_t
*tag
, int *offset
);
1469 void update_mtag_data(struct expression
*expr
, struct smatch_state
*state
);
1470 int get_mtag_sval(struct expression
*expr
, sval_t
*sval
);
1472 /* Trinity fuzzer stuff */
1473 const char *get_syscall_arg_type(struct symbol
*sym
);
1476 int binfo_equiv(struct bit_info
*one
, struct bit_info
*two
);
1477 struct bit_info
*alloc_bit_info(unsigned long long set
, unsigned long long possible
);
1478 struct smatch_state
*alloc_bstate(unsigned long long set
, unsigned long long possible
);
1479 struct smatch_state
*merge_bstates(struct smatch_state
*one_state
, struct smatch_state
*two_state
);
1481 /* smatch_param_bits_set.c */
1482 void __set_param_modified_helper(struct expression
*expr
, struct smatch_state
*state
);
1483 void __set_param_modified_helper_sym(const char *name
, struct symbol
*sym
,
1484 struct smatch_state
*state
);
1486 /* smatch_param_bits_clear.c */
1487 void __set_param_modified_helper_clear(struct expression
*expr
, struct smatch_state
*state
);
1488 void __set_param_modified_helper_sym_clear(const char *name
, struct symbol
*sym
,
1489 struct smatch_state
*state
);
1491 /* smatch_bit_info.c */
1492 struct bit_info
*rl_to_binfo(struct range_list
*rl
);
1493 struct bit_info
*get_bit_info(struct expression
*expr
);
1494 struct bit_info
*get_bit_info_var_sym(const char *name
, struct symbol
*sym
);
1496 /* smatch_mem_tracker.c */
1497 extern int option_mem
;
1498 unsigned long get_mem_kb(void);
1499 unsigned long get_max_memory(void);
1501 /* smatch_goto_tracker.c */
1502 struct sm_state
*get_goto_sm_state(void);
1504 /* check_is_nospec.c */
1505 bool is_nospec(struct expression
*expr
);
1506 long get_stmt_cnt(void);
1508 /* smatch_nul_terminator.c */
1509 bool is_nul_terminated_var_sym(const char *name
, struct symbol
*sym
);
1510 bool is_nul_terminated(struct expression
*expr
);
1511 /* check_kernel.c */
1512 bool is_ignored_kernel_data(const char *name
);
1513 int get_gfp_param(struct expression
*expr
);
1515 bool is_fresh_alloc_var_sym(const char *var
, struct symbol
*sym
);
1516 bool is_fresh_alloc(struct expression
*expr
);
1517 bool is_freed_var_sym(const char *name
, struct symbol
*sym
);
1518 void track_freed_param(struct expression
*expr
, struct smatch_state
*state
);
1519 void track_freed_param_var_sym(const char *name
, struct symbol
*sym
,
1520 struct smatch_state
*state
);
1521 bool is_part_of_condition(struct expression
*expr
);
1522 bool is_percent_p_print(struct expression
*expr
);
1524 void add_free_hook(name_sym_hook
*hook
);
1526 /* smatch_unconstant_macros.c */
1527 int is_unconstant_macro(struct expression
*expr
);
1529 /* smatch_assigned_state.c */
1530 void add_state_assigned_hook(int owner
, sm_hook
*call_back
);
1531 void add_ssa_state_assigned_hook(int owner
, sm_hook
*call_back
);
1533 static inline bool type_is_ptr(struct symbol
*type
)
1536 (type
->type
== SYM_PTR
||
1537 type
->type
== SYM_ARRAY
||
1538 type
->type
== SYM_FN
);
1541 static inline bool type_is_fp(struct symbol
*type
)
1544 (type
== &float_ctype
||
1545 type
== &double_ctype
||
1546 type
== &ldouble_ctype
);
1549 static inline int type_bits(struct symbol
*type
)
1553 if (type_is_ptr(type
))
1554 return bits_in_pointer
;
1555 if (!type
->examined
)
1556 examine_symbol_type(type
);
1557 return type
->bit_size
;
1560 static inline int type_unsigned(struct symbol
*base_type
)
1564 if (is_ptr_type(base_type
))
1566 if (base_type
->ctype
.modifiers
& MOD_UNSIGNED
)
1571 static inline int type_positive_bits(struct symbol
*type
)
1575 if (is_ptr_type(type
))
1576 return bits_in_pointer
;
1577 if (type_unsigned(type
))
1578 return type_bits(type
);
1579 return type_bits(type
) - 1;
1582 static inline int sval_positive_bits(sval_t sval
)
1584 return type_positive_bits(sval
.type
);
1588 * Returns -1 if one is smaller, 0 if they are the same and 1 if two is larger.
1591 static inline int fp_cmp(sval_t one
, sval_t two
)
1593 struct symbol
*type
;
1595 if (sval_is_fp(one
) && sval_is_fp(two
))
1596 type
= type_bits(one
.type
) > type_bits(two
.type
) ? one
.type
: two
.type
;
1597 else if (sval_is_fp(one
))
1602 one
= sval_cast(type
, one
);
1603 two
= sval_cast(type
, two
);
1605 if (one
.type
== &float_ctype
) {
1606 if (one
.fvalue
< two
.fvalue
)
1608 if (one
.fvalue
== two
.fvalue
)
1612 if (one
.type
== &double_ctype
) {
1613 if (one
.dvalue
< two
.dvalue
)
1615 if (one
.dvalue
== two
.dvalue
)
1619 if (one
.type
== &ldouble_ctype
) {
1620 if (one
.ldvalue
< two
.ldvalue
)
1622 if (one
.ldvalue
== two
.ldvalue
)
1626 sm_perror("bad type in fp_cmp(): %s", type_to_str(type
));
1630 static inline int sval_cmp(sval_t one
, sval_t two
)
1632 struct symbol
*type
;
1634 if (sval_is_fp(one
) || sval_is_fp(two
))
1635 return fp_cmp(one
, two
);
1638 if (sval_positive_bits(two
) > sval_positive_bits(one
))
1640 if (type_bits(type
) < 31)
1643 one
= sval_cast(type
, one
);
1644 two
= sval_cast(type
, two
);
1646 if (type_unsigned(type
)) {
1647 if (one
.uvalue
< two
.uvalue
)
1649 if (one
.uvalue
== two
.uvalue
)
1653 /* fix me handle type promotion and unsigned values */
1654 if (one
.value
< two
.value
)
1656 if (one
.value
== two
.value
)
1661 #endif /* !SMATCH_H_ */