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11462 enable smatch by default
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--- old/usr/src/tools/smatch/src/smatch.h
+++ new/usr/src/tools/smatch/src/smatch.h
1 1 /*
2 2 * Copyright (C) 2006 Dan Carpenter.
3 3 *
4 4 * This program is free software; you can redistribute it and/or
5 5 * modify it under the terms of the GNU General Public License
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6 6 * as published by the Free Software Foundation; either version 2
7 7 * of the License, or (at your option) any later version.
8 8 *
9 9 * This program is distributed in the hope that it will be useful,
10 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 12 * GNU General Public License for more details.
13 13 *
14 14 * You should have received a copy of the GNU General Public License
15 15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
16 + *
17 + * Copyright 2019 Joyent, Inc.
16 18 */
17 19
18 20 #ifndef SMATCH_H_
19 21 # define SMATCH_H_
20 22
21 23 #include <stdio.h>
22 24 #include <string.h>
23 25 #include <limits.h>
24 26 #include <sys/time.h>
25 27 #include <sqlite3.h>
26 28 #include "lib.h"
27 29 #include "allocate.h"
28 30 #include "scope.h"
29 31 #include "parse.h"
30 32 #include "expression.h"
31 33 #include "avl.h"
32 34
33 35 typedef struct {
34 36 struct symbol *type;
35 37 union {
36 38 long long value;
37 39 unsigned long long uvalue;
38 40 };
39 41 } sval_t;
40 42
41 43 typedef long long mtag_t;
42 44
43 45 struct smatch_state {
44 46 const char *name;
45 47 void *data;
46 48 };
47 49 #define STATE(_x) static struct smatch_state _x = { .name = #_x }
48 50 extern struct smatch_state undefined;
49 51 extern struct smatch_state ghost;
50 52 extern struct smatch_state merged;
51 53 extern struct smatch_state true_state;
52 54 extern struct smatch_state false_state;
53 55 DECLARE_ALLOCATOR(smatch_state);
54 56
55 57 static inline void *INT_PTR(int i)
56 58 {
57 59 return (void *)(long)i;
58 60 }
59 61
60 62 static inline int PTR_INT(void *p)
61 63 {
62 64 return (int)(long)p;
63 65 }
64 66
65 67 struct tracker {
66 68 char *name;
67 69 struct symbol *sym;
68 70 unsigned short owner;
69 71 };
70 72 DECLARE_ALLOCATOR(tracker);
71 73 DECLARE_PTR_LIST(tracker_list, struct tracker);
72 74 DECLARE_PTR_LIST(stree_stack, struct stree);
73 75
74 76 /* The first 3 struct members must match struct tracker */
75 77 struct sm_state {
76 78 const char *name;
77 79 struct symbol *sym;
78 80 unsigned short owner;
79 81 unsigned short merged:1;
80 82 unsigned short skip_implications:1;
81 83 unsigned int nr_children;
82 84 unsigned int line;
83 85 struct smatch_state *state;
84 86 struct stree *pool;
85 87 struct sm_state *left;
86 88 struct sm_state *right;
87 89 struct state_list *possible;
88 90 };
89 91
90 92 struct var_sym {
91 93 char *var;
92 94 struct symbol *sym;
93 95 };
94 96 DECLARE_ALLOCATOR(var_sym);
95 97 DECLARE_PTR_LIST(var_sym_list, struct var_sym);
96 98
97 99 struct constraint {
98 100 int op;
99 101 int id;
100 102 };
101 103 DECLARE_PTR_LIST(constraint_list, struct constraint);
102 104
103 105 enum hook_type {
104 106 EXPR_HOOK,
105 107 STMT_HOOK,
106 108 STMT_HOOK_AFTER,
107 109 SYM_HOOK,
108 110 STRING_HOOK,
109 111 DECLARATION_HOOK,
110 112 ASSIGNMENT_HOOK,
111 113 ASSIGNMENT_HOOK_AFTER,
112 114 RAW_ASSIGNMENT_HOOK,
113 115 GLOBAL_ASSIGNMENT_HOOK,
114 116 LOGIC_HOOK,
115 117 CONDITION_HOOK,
116 118 PRELOOP_HOOK,
117 119 SELECT_HOOK,
118 120 WHOLE_CONDITION_HOOK,
119 121 FUNCTION_CALL_HOOK_BEFORE,
120 122 FUNCTION_CALL_HOOK,
121 123 CALL_HOOK_AFTER_INLINE,
122 124 FUNCTION_CALL_HOOK_AFTER_DB,
123 125 CALL_ASSIGNMENT_HOOK,
124 126 MACRO_ASSIGNMENT_HOOK,
125 127 BINOP_HOOK,
126 128 OP_HOOK,
127 129 DEREF_HOOK,
128 130 CASE_HOOK,
129 131 ASM_HOOK,
130 132 CAST_HOOK,
131 133 SIZEOF_HOOK,
132 134 BASE_HOOK,
133 135 FUNC_DEF_HOOK,
134 136 AFTER_DEF_HOOK,
135 137 END_FUNC_HOOK,
136 138 AFTER_FUNC_HOOK,
137 139 RETURN_HOOK,
138 140 INLINE_FN_START,
139 141 INLINE_FN_END,
140 142 END_FILE_HOOK,
141 143 NUM_HOOKS,
142 144 };
143 145
144 146 #define TRUE 1
145 147 #define FALSE 0
146 148
147 149 struct range_list;
148 150
149 151 void add_hook(void *func, enum hook_type type);
150 152 typedef struct smatch_state *(merge_func_t)(struct smatch_state *s1, struct smatch_state *s2);
151 153 typedef struct smatch_state *(unmatched_func_t)(struct sm_state *state);
152 154 void add_merge_hook(int client_id, merge_func_t *func);
153 155 void add_unmatched_state_hook(int client_id, unmatched_func_t *func);
154 156 void add_pre_merge_hook(int client_id, void (*hook)(struct sm_state *sm));
155 157 typedef void (scope_hook)(void *data);
156 158 void add_scope_hook(scope_hook *hook, void *data);
157 159 typedef void (func_hook)(const char *fn, struct expression *expr, void *data);
158 160 typedef void (implication_hook)(const char *fn, struct expression *call_expr,
159 161 struct expression *assign_expr, void *data);
160 162 typedef void (return_implies_hook)(struct expression *call_expr,
161 163 int param, char *key, char *value);
162 164 typedef int (implied_return_hook)(struct expression *call_expr, void *info, struct range_list **rl);
163 165 void add_function_hook(const char *look_for, func_hook *call_back, void *data);
164 166
165 167 void add_function_assign_hook(const char *look_for, func_hook *call_back,
166 168 void *info);
167 169 void add_implied_return_hook(const char *look_for,
168 170 implied_return_hook *call_back,
169 171 void *info);
170 172 void add_macro_assign_hook(const char *look_for, func_hook *call_back,
171 173 void *info);
172 174 void add_macro_assign_hook_extra(const char *look_for, func_hook *call_back,
173 175 void *info);
174 176 void return_implies_state(const char *look_for, long long start, long long end,
175 177 implication_hook *call_back, void *info);
176 178 void select_return_states_hook(int type, return_implies_hook *callback);
177 179 void select_return_states_before(void (*fn)(void));
178 180 void select_return_states_after(void (*fn)(void));
179 181 int get_implied_return(struct expression *expr, struct range_list **rl);
180 182 void allocate_hook_memory(void);
181 183
182 184 struct modification_data {
183 185 struct smatch_state *prev;
184 186 struct expression *cur;
185 187 };
186 188
187 189 typedef void (modification_hook)(struct sm_state *sm, struct expression *mod_expr);
188 190 void add_modification_hook(int owner, modification_hook *call_back);
189 191 void add_modification_hook_late(int owner, modification_hook *call_back);
190 192 struct smatch_state *get_modification_state(struct expression *expr);
191 193
192 194 int outside_of_function(void);
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193 195 const char *get_filename(void);
194 196 const char *get_base_file(void);
195 197 char *get_function(void);
196 198 int get_lineno(void);
197 199 extern int final_pass;
198 200 extern struct symbol *cur_func_sym;
199 201 extern int option_debug;
200 202 extern int local_debug;
201 203 extern int option_info;
202 204 extern int option_spammy;
205 +extern int option_timeout;
203 206 extern char *trace_variable;
204 207 extern struct stree *global_states;
205 208 int is_skipped_function(void);
206 209 int is_silenced_function(void);
207 210
208 211 /* smatch_impossible.c */
209 212 int is_impossible_path(void);
210 213 void set_path_impossible(void);
211 214
212 215 extern FILE *sm_outfd;
213 216 extern FILE *sql_outfd;
214 217 extern FILE *caller_info_fd;
215 218 extern int sm_nr_checks;
216 219 extern int sm_nr_errors;
217 220 extern const char *progname;
218 221
219 222 /*
220 223 * How to use these routines:
221 224 *
222 225 * sm_fatal(): an internal error of some kind that should immediately exit
223 226 * sm_ierror(): an internal error
224 227 * sm_perror(): an internal error from parsing input source
225 228 * sm_error(): an error from input source
226 229 * sm_warning(): a warning from input source
227 230 * sm_info(): info message (from option_info)
228 231 * sm_debug(): debug message
229 232 * sm_msg(): other message (please avoid using this)
230 233 */
231 234
232 235 #define sm_printf(msg...) do { if (final_pass || option_debug || local_debug) fprintf(sm_outfd, msg); } while (0)
233 236
234 237 static inline void sm_prefix(void)
235 238 {
236 239 sm_printf("%s: %s:%d %s() ", progname, get_filename(), get_lineno(), get_function());
237 240 }
238 241
239 242 static inline void print_implied_debug_msg();
240 243
241 244 extern bool __silence_warnings_for_stmt;
242 245
243 246 #define sm_print_msg(type, msg...) \
244 247 do { \
245 248 print_implied_debug_msg(); \
246 249 if (!final_pass && !option_debug && !local_debug) \
247 250 break; \
248 251 if (__silence_warnings_for_stmt && !option_debug && !local_debug) \
249 252 break; \
250 253 if (!option_info && is_silenced_function()) \
251 254 break; \
252 255 sm_prefix(); \
253 256 if (type == 1) { \
254 257 sm_printf("warn: "); \
255 258 sm_nr_checks++; \
256 259 } else if (type == 2) { \
257 260 sm_printf("error: "); \
258 261 sm_nr_checks++; \
259 262 } else if (type == 3) { \
260 263 sm_printf("parse error: "); \
261 264 sm_nr_errors++; \
262 265 } \
263 266 sm_printf(msg); \
264 267 sm_printf("\n"); \
265 268 } while (0)
266 269
267 270 #define sm_msg(msg...) do { sm_print_msg(0, msg); } while (0)
268 271
269 272 #define local_debug(msg...) \
270 273 do { \
271 274 if (local_debug) \
272 275 sm_msg(msg); \
273 276 } while (0)
274 277
275 278 extern char *implied_debug_msg;
276 279 static inline void print_implied_debug_msg(void)
277 280 {
278 281 static struct symbol *last_printed = NULL;
279 282
280 283 if (!implied_debug_msg)
281 284 return;
282 285 if (last_printed == cur_func_sym)
283 286 return;
284 287 last_printed = cur_func_sym;
285 288 sm_msg("%s", implied_debug_msg);
286 289 }
287 290
288 291 #define sm_debug(msg...) do { if (option_debug) sm_printf(msg); } while (0)
289 292
290 293 #define sm_info(msg...) do { \
291 294 if (option_debug || (option_info && final_pass)) { \
292 295 sm_prefix(); \
293 296 sm_printf("info: "); \
294 297 sm_printf(msg); \
295 298 sm_printf("\n"); \
296 299 } \
297 300 } while(0)
298 301
299 302 #define sm_warning(msg...) do { sm_print_msg(1, msg); } while (0)
300 303 #define sm_error(msg...) do { sm_print_msg(2, msg); } while (0)
301 304 #define sm_perror(msg...) do { sm_print_msg(3, msg); } while (0)
302 305
303 306 static inline void sm_fatal(const char *fmt, ...)
304 307 {
305 308 va_list args;
306 309
307 310 va_start(args, fmt);
308 311 vfprintf(sm_outfd, fmt, args);
309 312 va_end(args);
310 313
311 314 fprintf(sm_outfd, "\n");
312 315
313 316 exit(1);
314 317 }
315 318
316 319 static inline void sm_ierror(const char *fmt, ...)
317 320 {
318 321 va_list args;
319 322
320 323 sm_nr_errors++;
321 324
322 325 fprintf(sm_outfd, "internal error: ");
323 326
324 327 va_start(args, fmt);
325 328 vfprintf(sm_outfd, fmt, args);
326 329 va_end(args);
327 330
328 331 fprintf(sm_outfd, "\n");
329 332 }
330 333 #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
331 334
332 335 struct smatch_state *__get_state(int owner, const char *name, struct symbol *sym);
333 336 struct smatch_state *get_state(int owner, const char *name, struct symbol *sym);
334 337 struct smatch_state *get_state_expr(int owner, struct expression *expr);
335 338 struct state_list *get_possible_states(int owner, const char *name,
336 339 struct symbol *sym);
337 340 struct state_list *get_possible_states_expr(int owner, struct expression *expr);
338 341 struct sm_state *set_state(int owner, const char *name, struct symbol *sym,
339 342 struct smatch_state *state);
340 343 struct sm_state *set_state_expr(int owner, struct expression *expr,
341 344 struct smatch_state *state);
342 345 void delete_state(int owner, const char *name, struct symbol *sym);
343 346 void delete_state_expr(int owner, struct expression *expr);
344 347 void __delete_all_states_sym(struct symbol *sym);
345 348 void set_true_false_states(int owner, const char *name, struct symbol *sym,
346 349 struct smatch_state *true_state,
347 350 struct smatch_state *false_state);
348 351 void set_true_false_states_expr(int owner, struct expression *expr,
349 352 struct smatch_state *true_state,
350 353 struct smatch_state *false_state);
351 354
352 355 struct stree *get_all_states_from_stree(int owner, struct stree *source);
353 356 struct stree *get_all_states_stree(int id);
354 357 struct stree *__get_cur_stree(void);
355 358 int is_reachable(void);
356 359 void add_get_state_hook(void (*fn)(int owner, const char *name, struct symbol *sym));
357 360
358 361 /* smatch_helper.c */
359 362 DECLARE_PTR_LIST(int_stack, int);
360 363 char *alloc_string(const char *str);
361 364 void free_string(char *str);
362 365 void append(char *dest, const char *data, int buff_len);
363 366 void remove_parens(char *str);
364 367 struct smatch_state *alloc_state_num(int num);
365 368 struct smatch_state *alloc_state_str(const char *name);
366 369 struct smatch_state *alloc_state_expr(struct expression *expr);
367 370 struct expression *get_argument_from_call_expr(struct expression_list *args,
368 371 int num);
369 372
370 373 char *expr_to_var(struct expression *expr);
371 374 struct symbol *expr_to_sym(struct expression *expr);
372 375 char *expr_to_str(struct expression *expr);
373 376 char *expr_to_str_sym(struct expression *expr,
374 377 struct symbol **sym_ptr);
375 378 char *expr_to_var_sym(struct expression *expr,
376 379 struct symbol **sym_ptr);
377 380 char *expr_to_known_chunk_sym(struct expression *expr, struct symbol **sym);
378 381 char *expr_to_chunk_sym_vsl(struct expression *expr, struct symbol **sym, struct var_sym_list **vsl);
379 382 int get_complication_score(struct expression *expr);
380 383
381 384 int sym_name_is(const char *name, struct expression *expr);
382 385 int get_const_value(struct expression *expr, sval_t *sval);
383 386 int get_value(struct expression *expr, sval_t *val);
384 387 int get_implied_value(struct expression *expr, sval_t *val);
385 388 int get_implied_min(struct expression *expr, sval_t *sval);
386 389 int get_implied_max(struct expression *expr, sval_t *val);
387 390 int get_hard_max(struct expression *expr, sval_t *sval);
388 391 int get_fuzzy_min(struct expression *expr, sval_t *min);
389 392 int get_fuzzy_max(struct expression *expr, sval_t *max);
390 393 int get_absolute_min(struct expression *expr, sval_t *sval);
391 394 int get_absolute_max(struct expression *expr, sval_t *sval);
392 395 int parse_call_math(struct expression *expr, char *math, sval_t *val);
393 396 int parse_call_math_rl(struct expression *call, char *math, struct range_list **rl);
394 397 char *get_value_in_terms_of_parameter_math(struct expression *expr);
395 398 char *get_value_in_terms_of_parameter_math_var_sym(const char *var, struct symbol *sym);
396 399 int is_zero(struct expression *expr);
397 400 int known_condition_true(struct expression *expr);
398 401 int known_condition_false(struct expression *expr);
399 402 int implied_condition_true(struct expression *expr);
400 403 int implied_condition_false(struct expression *expr);
401 404 int can_integer_overflow(struct symbol *type, struct expression *expr);
402 405 void clear_math_cache(void);
403 406
404 407 int is_array(struct expression *expr);
405 408 struct expression *get_array_base(struct expression *expr);
406 409 struct expression *get_array_offset(struct expression *expr);
407 410 const char *show_state(struct smatch_state *state);
408 411 struct statement *get_expression_statement(struct expression *expr);
409 412 struct expression *strip_parens(struct expression *expr);
410 413 struct expression *strip_expr(struct expression *expr);
411 414 struct expression *strip_expr_set_parent(struct expression *expr);
412 415 void scoped_state(int my_id, const char *name, struct symbol *sym);
413 416 int is_error_return(struct expression *expr);
414 417 int getting_address(void);
415 418 int get_struct_and_member(struct expression *expr, const char **type, const char **member);
416 419 char *get_member_name(struct expression *expr);
417 420 char *get_fnptr_name(struct expression *expr);
418 421 int cmp_pos(struct position pos1, struct position pos2);
419 422 int positions_eq(struct position pos1, struct position pos2);
420 423 struct statement *get_current_statement(void);
421 424 struct statement *get_prev_statement(void);
422 425 struct expression *get_last_expr_from_expression_stmt(struct expression *expr);
423 426 int get_param_num_from_sym(struct symbol *sym);
424 427 int get_param_num(struct expression *expr);
425 428 int ms_since(struct timeval *start);
426 429 int parent_is_gone_var_sym(const char *name, struct symbol *sym);
427 430 int parent_is_gone(struct expression *expr);
428 431 int invert_op(int op);
429 432 int expr_equiv(struct expression *one, struct expression *two);
430 433 void push_int(struct int_stack **stack, int num);
431 434 int pop_int(struct int_stack **stack);
432 435
433 436 /* smatch_type.c */
434 437 struct symbol *get_real_base_type(struct symbol *sym);
435 438 int type_bytes(struct symbol *type);
436 439 int array_bytes(struct symbol *type);
437 440 struct symbol *get_pointer_type(struct expression *expr);
438 441 struct symbol *get_type(struct expression *expr);
439 442 struct symbol *get_final_type(struct expression *expr);
440 443 struct symbol *get_promoted_type(struct symbol *left, struct symbol *right);
441 444 int type_signed(struct symbol *base_type);
442 445 int expr_unsigned(struct expression *expr);
443 446 int expr_signed(struct expression *expr);
444 447 int returns_unsigned(struct symbol *base_type);
445 448 int is_pointer(struct expression *expr);
446 449 int returns_pointer(struct symbol *base_type);
447 450 sval_t sval_type_max(struct symbol *base_type);
448 451 sval_t sval_type_min(struct symbol *base_type);
449 452 int nr_bits(struct expression *expr);
450 453 int is_void_pointer(struct expression *expr);
451 454 int is_char_pointer(struct expression *expr);
452 455 int is_string(struct expression *expr);
453 456 int is_static(struct expression *expr);
454 457 int is_local_variable(struct expression *expr);
455 458 int types_equiv(struct symbol *one, struct symbol *two);
456 459 int fn_static(void);
457 460 const char *global_static();
458 461 struct symbol *cur_func_return_type(void);
459 462 struct symbol *get_arg_type(struct expression *fn, int arg);
460 463 struct symbol *get_member_type_from_key(struct expression *expr, const char *key);
461 464 struct symbol *get_arg_type_from_key(struct expression *fn, int param, struct expression *arg, const char *key);
462 465 int is_struct(struct expression *expr);
463 466 char *type_to_str(struct symbol *type);
464 467
465 468 /* smatch_ignore.c */
466 469 void add_ignore(int owner, const char *name, struct symbol *sym);
467 470 int is_ignored(int owner, const char *name, struct symbol *sym);
468 471 void add_ignore_expr(int owner, struct expression *expr);
469 472 int is_ignored_expr(int owner, struct expression *expr);
470 473
471 474 /* smatch_var_sym */
472 475 struct var_sym *alloc_var_sym(const char *var, struct symbol *sym);
473 476 struct var_sym_list *expr_to_vsl(struct expression *expr);
474 477 void add_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym);
475 478 void add_var_sym_expr(struct var_sym_list **list, struct expression *expr);
476 479 void del_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym);
477 480 int in_var_sym_list(struct var_sym_list *list, const char *var, struct symbol *sym);
478 481 struct var_sym_list *clone_var_sym_list(struct var_sym_list *from_vsl);
479 482 void merge_var_sym_list(struct var_sym_list **dest, struct var_sym_list *src);
480 483 struct var_sym_list *combine_var_sym_lists(struct var_sym_list *one, struct var_sym_list *two);
481 484 int var_sym_lists_equiv(struct var_sym_list *one, struct var_sym_list *two);
482 485 void free_var_sym_list(struct var_sym_list **list);
483 486 void free_var_syms_and_list(struct var_sym_list **list);
484 487
485 488 /* smatch_tracker */
486 489 struct tracker *alloc_tracker(int owner, const char *name, struct symbol *sym);
487 490 void add_tracker(struct tracker_list **list, int owner, const char *name,
488 491 struct symbol *sym);
489 492 void add_tracker_expr(struct tracker_list **list, int owner, struct expression *expr);
490 493 void del_tracker(struct tracker_list **list, int owner, const char *name,
491 494 struct symbol *sym);
492 495 int in_tracker_list(struct tracker_list *list, int owner, const char *name,
493 496 struct symbol *sym);
494 497 void free_tracker_list(struct tracker_list **list);
495 498 void free_trackers_and_list(struct tracker_list **list);
496 499
497 500 /* smatch_conditions */
498 501 int in_condition(void);
499 502
500 503 /* smatch_flow.c */
501 504
502 505 extern int __in_fake_assign;
503 506 extern int __in_fake_parameter_assign;
504 507 extern int __in_fake_struct_assign;
505 508 extern int in_fake_env;
506 509 void smatch (int argc, char **argv);
507 510 int inside_loop(void);
508 511 int definitely_inside_loop(void);
509 512 struct expression *get_switch_expr(void);
510 513 int in_expression_statement(void);
511 514 void __process_post_op_stack(void);
512 515 void __split_expr(struct expression *expr);
513 516 void __split_label_stmt(struct statement *stmt);
514 517 void __split_stmt(struct statement *stmt);
515 518 extern int __in_function_def;
516 519 extern int option_assume_loops;
517 520 extern int option_two_passes;
518 521 extern int option_no_db;
519 522 extern int option_file_output;
520 523 extern int option_time;
521 524 extern struct expression_list *big_expression_stack;
522 525 extern struct expression_list *big_condition_stack;
523 526 extern struct statement_list *big_statement_stack;
524 527 int is_assigned_call(struct expression *expr);
525 528 int inlinable(struct expression *expr);
526 529 extern int __inline_call;
527 530 extern struct expression *__inline_fn;
528 531 extern int __in_pre_condition;
529 532 extern int __bail_on_rest_of_function;
530 533 extern struct statement *__prev_stmt;
531 534 extern struct statement *__cur_stmt;
532 535 extern struct statement *__next_stmt;
533 536 void init_fake_env(void);
534 537 void end_fake_env(void);
535 538 int time_parsing_function(void);
536 539
537 540 /* smatch_struct_assignment.c */
538 541 struct expression *get_faked_expression(void);
539 542 void __fake_struct_member_assignments(struct expression *expr);
540 543
541 544 /* smatch_project.c */
542 545 int is_no_inline_function(const char *function);
543 546
544 547 /* smatch_conditions */
545 548 void __split_whole_condition(struct expression *expr);
546 549 void __handle_logic(struct expression *expr);
547 550 int is_condition(struct expression *expr);
548 551 int __handle_condition_assigns(struct expression *expr);
549 552 int __handle_select_assigns(struct expression *expr);
550 553 int __handle_expr_statement_assigns(struct expression *expr);
551 554
552 555 /* smatch_implied.c */
553 556 extern int option_debug_implied;
554 557 extern int option_debug_related;
555 558 struct range_list_stack;
556 559 void param_limit_implications(struct expression *expr, int param, char *key, char *value);
557 560 struct stree *__implied_case_stree(struct expression *switch_expr,
558 561 struct range_list *case_rl,
559 562 struct range_list_stack **remaining_cases,
560 563 struct stree **raw_stree);
561 564 void overwrite_states_using_pool(struct sm_state *gate_sm, struct sm_state *pool_sm);
562 565 int assume(struct expression *expr);
563 566 void end_assume(void);
564 567 int impossible_assumption(struct expression *left, int op, sval_t sval);
565 568
566 569 /* smatch_extras.c */
567 570 #define SMATCH_EXTRA 5 /* this is my_id from smatch extra set in smatch.c */
568 571 extern int RETURN_ID;
569 572
570 573 struct data_range {
571 574 sval_t min;
572 575 sval_t max;
573 576 };
574 577
575 578 #define MTAG_ALIAS_BIT (1ULL << 63)
576 579 #define MTAG_OFFSET_MASK 0xfffULL
577 580
578 581 extern long long valid_ptr_min, valid_ptr_max;
579 582 extern sval_t valid_ptr_min_sval, valid_ptr_max_sval;
580 583 extern struct range_list *valid_ptr_rl;
581 584 static const sval_t array_min_sval = {
582 585 .type = &ptr_ctype,
583 586 {.value = 100000},
584 587 };
585 588 static const sval_t array_max_sval = {
586 589 .type = &ptr_ctype,
587 590 {.value = 199999},
588 591 };
589 592 static const sval_t text_seg_min = {
590 593 .type = &ptr_ctype,
591 594 {.value = 100000000},
592 595 };
593 596 static const sval_t text_seg_max = {
594 597 .type = &ptr_ctype,
595 598 {.value = 177777777},
596 599 };
597 600 static const sval_t data_seg_min = {
598 601 .type = &ptr_ctype,
599 602 {.value = 200000000},
600 603 };
601 604 static const sval_t data_seg_max = {
602 605 .type = &ptr_ctype,
603 606 {.value = 277777777},
604 607 };
605 608 static const sval_t bss_seg_min = {
606 609 .type = &ptr_ctype,
607 610 {.value = 300000000},
608 611 };
609 612 static const sval_t bss_seg_max = {
610 613 .type = &ptr_ctype,
611 614 {.value = 377777777},
612 615 };
613 616 static const sval_t stack_seg_min = {
614 617 .type = &ptr_ctype,
615 618 {.value = 400000000},
616 619 };
617 620 static const sval_t stack_seg_max = {
618 621 .type = &ptr_ctype,
619 622 {.value = 477777777},
620 623 };
621 624 static const sval_t kmalloc_seg_min = {
622 625 .type = &ptr_ctype,
623 626 {.value = 500000000},
624 627 };
625 628 static const sval_t kmalloc_seg_max = {
626 629 .type = &ptr_ctype,
627 630 {.value = 577777777},
628 631 };
629 632 static const sval_t vmalloc_seg_min = {
630 633 .type = &ptr_ctype,
631 634 {.value = 600000000},
632 635 };
633 636 static const sval_t vmalloc_seg_max = {
634 637 .type = &ptr_ctype,
635 638 {.value = 677777777},
636 639 };
637 640 static const sval_t fn_ptr_min = {
638 641 .type = &ptr_ctype,
639 642 {.value = 700000000},
640 643 };
641 644 static const sval_t fn_ptr_max = {
642 645 .type = &ptr_ctype,
643 646 {.value = 777777777},
644 647 };
645 648
646 649 char *get_other_name_sym(const char *name, struct symbol *sym, struct symbol **new_sym);
647 650 char *map_call_to_other_name_sym(const char *name, struct symbol *sym, struct symbol **new_sym);
648 651 char *map_long_to_short_name_sym(const char *name, struct symbol *sym, struct symbol **new_sym);
649 652 char *map_long_to_short_name_sym_nostack(const char *name, struct symbol *sym, struct symbol **new_sym);
650 653
651 654 #define STRLEN_MAX_RET 1010101
652 655
653 656 /* smatch_absolute.c */
654 657 int get_absolute_min_helper(struct expression *expr, sval_t *sval);
655 658 int get_absolute_max_helper(struct expression *expr, sval_t *sval);
656 659
657 660 /* smatch_local_values.c */
658 661 int get_local_rl(struct expression *expr, struct range_list **rl);
659 662 int get_local_max_helper(struct expression *expr, sval_t *sval);
660 663 int get_local_min_helper(struct expression *expr, sval_t *sval);
661 664
662 665 /* smatch_type_value.c */
663 666 int get_db_type_rl(struct expression *expr, struct range_list **rl);
664 667 /* smatch_data_val.c */
665 668 int get_mtag_rl(struct expression *expr, struct range_list **rl);
666 669 /* smatch_array_values.c */
667 670 int get_array_rl(struct expression *expr, struct range_list **rl);
668 671
669 672 /* smatch_states.c */
670 673 void __swap_cur_stree(struct stree *stree);
671 674 void __push_fake_cur_stree();
672 675 struct stree *__pop_fake_cur_stree();
673 676 void __free_fake_cur_stree();
674 677 void __set_fake_cur_stree_fast(struct stree *stree);
675 678 void __pop_fake_cur_stree_fast(void);
676 679 void __merge_stree_into_cur(struct stree *stree);
677 680
678 681 int unreachable(void);
679 682 void __set_sm(struct sm_state *sm);
680 683 void __set_sm_cur_stree(struct sm_state *sm);
681 684 void __set_sm_fake_stree(struct sm_state *sm);
682 685 void __set_true_false_sm(struct sm_state *true_state,
683 686 struct sm_state *false_state);
684 687 void nullify_path(void);
685 688 void __match_nullify_path_hook(const char *fn, struct expression *expr,
686 689 void *unused);
687 690 void __unnullify_path(void);
688 691 int __path_is_null(void);
689 692 void save_all_states(void);
690 693 void restore_all_states(void);
691 694 void free_goto_stack(void);
692 695 void clear_all_states(void);
693 696
694 697 struct sm_state *get_sm_state(int owner, const char *name,
695 698 struct symbol *sym);
696 699 struct sm_state *get_sm_state_expr(int owner, struct expression *expr);
697 700 void __push_true_states(void);
698 701 void __use_false_states(void);
699 702 void __discard_false_states(void);
700 703 void __merge_false_states(void);
701 704 void __merge_true_states(void);
702 705
703 706 void __negate_cond_stacks(void);
704 707 void __use_pre_cond_states(void);
705 708 void __use_cond_true_states(void);
706 709 void __use_cond_false_states(void);
707 710 void __push_cond_stacks(void);
708 711 void __fold_in_set_states(void);
709 712 void __free_set_states(void);
710 713 struct stree *__copy_cond_true_states(void);
711 714 struct stree *__copy_cond_false_states(void);
712 715 struct stree *__pop_cond_true_stack(void);
713 716 struct stree *__pop_cond_false_stack(void);
714 717 void __and_cond_states(void);
715 718 void __or_cond_states(void);
716 719 void __save_pre_cond_states(void);
717 720 void __discard_pre_cond_states(void);
718 721 struct stree *__get_true_states(void);
719 722 struct stree *__get_false_states(void);
720 723 void __use_cond_states(void);
721 724 extern struct state_list *__last_base_slist;
722 725
723 726 void __push_continues(void);
724 727 void __discard_continues(void);
725 728 void __process_continues(void);
726 729 void __merge_continues(void);
727 730
728 731 void __push_breaks(void);
729 732 void __process_breaks(void);
730 733 int __has_breaks(void);
731 734 void __merge_breaks(void);
732 735 void __use_breaks(void);
733 736
734 737 void __save_switch_states(struct expression *switch_expr);
735 738 void __discard_switches(void);
736 739 int have_remaining_cases(void);
737 740 void __merge_switches(struct expression *switch_expr, struct range_list *case_rl);
738 741 void __push_default(void);
739 742 void __set_default(void);
740 743 int __pop_default(void);
741 744
742 745 void __push_conditions(void);
743 746 void __discard_conditions(void);
744 747
745 748 void __save_gotos(const char *name, struct symbol *sym);
746 749 void __merge_gotos(const char *name, struct symbol *sym);
747 750
748 751 void __print_cur_stree(void);
749 752
750 753 /* smatch_hooks.c */
751 754 void __pass_to_client(void *data, enum hook_type type);
752 755 void __pass_to_client_no_data(enum hook_type type);
753 756 void __pass_case_to_client(struct expression *switch_expr,
754 757 struct range_list *rl);
755 758 int __has_merge_function(int client_id);
756 759 struct smatch_state *__client_merge_function(int owner,
757 760 struct smatch_state *s1,
758 761 struct smatch_state *s2);
759 762 struct smatch_state *__client_unmatched_state_function(struct sm_state *sm);
760 763 void call_pre_merge_hook(struct sm_state *sm);
761 764 void __push_scope_hooks(void);
762 765 void __call_scope_hooks(void);
763 766
764 767 /* smatch_function_hooks.c */
765 768 void create_function_hook_hash(void);
766 769 void __match_initializer_call(struct symbol *sym);
767 770
768 771 /* smatch_db.c */
769 772 enum info_type {
770 773 INTERNAL = 0,
771 774 /*
772 775 * Changing these numbers is a pain. Don't do it. If you ever use a
773 776 * number it can't be re-used right away so there may be gaps.
774 777 * We select these in order by type so if the order matters, then give
775 778 * it a number below 100-999,9000-9999 ranges. */
776 779
777 780 PARAM_CLEARED = 101,
778 781 PARAM_LIMIT = 103,
779 782 PARAM_FILTER = 104,
780 783
781 784 PARAM_VALUE = 1001,
782 785 BUF_SIZE = 1002,
783 786 USER_DATA = 1003,
784 787 CAPPED_DATA = 1004,
785 788 RETURN_VALUE = 1005,
786 789 DEREFERENCE = 1006,
787 790 RANGE_CAP = 1007,
788 791 LOCK_HELD = 1008,
789 792 LOCK_RELEASED = 1009,
790 793 ABSOLUTE_LIMITS = 1010,
791 794 PARAM_ADD = 1012,
792 795 PARAM_FREED = 1013,
793 796 DATA_SOURCE = 1014,
794 797 FUZZY_MAX = 1015,
795 798 STR_LEN = 1016,
796 799 ARRAY_LEN = 1017,
797 800 CAPABLE = 1018,
798 801 NS_CAPABLE = 1019,
799 802 CONTAINER = 1020,
800 803 CASTED_CALL = 1021,
801 804 TYPE_LINK = 1022,
802 805 UNTRACKED_PARAM = 1023,
803 806 CULL_PATH = 1024,
804 807 PARAM_SET = 1025,
805 808 PARAM_USED = 1026,
806 809 BYTE_UNITS = 1027,
807 810 COMPARE_LIMIT = 1028,
808 811 PARAM_COMPARE = 1029,
809 812 CONSTRAINT = 1031,
810 813 PASSES_TYPE = 1032,
811 814 CONSTRAINT_REQUIRED = 1033,
812 815 NOSPEC = 1035,
813 816 NOSPEC_WB = 1036,
814 817 STMT_CNT = 1037,
815 818 TERMINATED = 1038,
816 819
817 820 /* put random temporary stuff in the 7000-7999 range for testing */
818 821 USER_DATA3 = 8017,
819 822 USER_DATA3_SET = 9017,
820 823 NO_OVERFLOW = 8018,
821 824 NO_OVERFLOW_SIMPLE = 8019,
822 825 LOCKED = 8020,
823 826 UNLOCKED = 8021,
824 827 SET_FS = 8022,
825 828 ATOMIC_INC = 8023,
826 829 ATOMIC_DEC = 8024,
827 830 NO_SIDE_EFFECT = 8025,
828 831 FN_ARG_LINK = 8028,
829 832 DATA_VALUE = 8029,
830 833 ARRAYSIZE_ARG = 8033,
831 834 SIZEOF_ARG = 8034,
832 835 MEMORY_TAG = 8036,
833 836 MTAG_ASSIGN = 8035,
834 837 STRING_VALUE = 8041,
835 838 };
836 839
837 840 extern struct sqlite3 *smatch_db;
838 841 extern struct sqlite3 *mem_db;
839 842 extern struct sqlite3 *cache_db;
840 843
841 844 void db_ignore_states(int id);
842 845 void select_caller_info_hook(void (*callback)(const char *name, struct symbol *sym, char *key, char *value), int type);
843 846 void add_member_info_callback(int owner, void (*callback)(struct expression *call, int param, char *printed_name, struct sm_state *sm));
844 847 void add_split_return_callback(void (*fn)(int return_id, char *return_ranges, struct expression *returned_expr));
845 848 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));
846 849 void select_call_implies_hook(int type, void (*callback)(struct expression *call, struct expression *arg, char *key, char *value));
847 850 void select_return_implies_hook(int type, void (*callback)(struct expression *call, struct expression *arg, char *key, char *value));
848 851 struct range_list *db_return_vals(struct expression *expr);
849 852 struct range_list *db_return_vals_from_str(const char *fn_name);
850 853 char *return_state_to_var_sym(struct expression *expr, int param, const char *key, struct symbol **sym);
851 854 char *get_chunk_from_key(struct expression *arg, char *key, struct symbol **sym, struct var_sym_list **vsl);
852 855 char *get_variable_from_key(struct expression *arg, const char *key, struct symbol **sym);
853 856 const char *state_name_to_param_name(const char *state_name, const char *param_name);
854 857 const char *get_param_name_var_sym(const char *name, struct symbol *sym);
855 858 const char *get_param_name(struct sm_state *sm);
856 859 const char *get_mtag_name_var_sym(const char *state_name, struct symbol *sym);
857 860 const char *get_mtag_name_expr(struct expression *expr);
858 861 char *get_data_info_name(struct expression *expr);
859 862
860 863 char *escape_newlines(const char *str);
861 864 void sql_exec(struct sqlite3 *db, int (*callback)(void*, int, char**, char**), void *data, const char *sql);
862 865
863 866 #define sql_helper(db, call_back, data, sql...) \
864 867 do { \
865 868 char sql_txt[1024]; \
866 869 \
867 870 sqlite3_snprintf(sizeof(sql_txt), sql_txt, sql); \
868 871 sm_debug("debug: %s\n", sql_txt); \
869 872 sql_exec(db, call_back, data, sql_txt); \
870 873 } while (0)
871 874
872 875
873 876 #define run_sql(call_back, data, sql...) \
874 877 do { \
875 878 if (option_no_db) \
876 879 break; \
877 880 sql_helper(smatch_db, call_back, data, sql); \
878 881 } while (0)
879 882
880 883 #define mem_sql(call_back, data, sql...) \
881 884 sql_helper(mem_db, call_back, data, sql)
882 885
883 886 #define cache_sql(call_back, data, sql...) \
884 887 sql_helper(cache_db, call_back, data, sql)
885 888
886 889 #define sql_insert_helper(table, db, ignore, late, values...) \
887 890 do { \
888 891 struct sqlite3 *_db = db; \
889 892 \
890 893 if (__inline_fn && !_db) \
891 894 _db = mem_db; \
892 895 if (_db) { \
893 896 char buf[1024]; \
894 897 char *err, *p = buf; \
895 898 int rc; \
896 899 \
897 900 p += snprintf(p, buf + sizeof(buf) - p, \
898 901 "insert %sinto %s values (", \
899 902 ignore ? "or ignore " : "", #table); \
900 903 p += snprintf(p, buf + sizeof(buf) - p, values); \
901 904 p += snprintf(p, buf + sizeof(buf) - p, ");"); \
902 905 sm_debug("mem-db: %s\n", buf); \
903 906 rc = sqlite3_exec(_db, buf, NULL, NULL, &err); \
904 907 if (rc != SQLITE_OK) { \
905 908 sm_ierror("SQL error #2: %s", err); \
906 909 sm_ierror("SQL: '%s'", buf); \
907 910 parse_error = 1; \
908 911 } \
909 912 break; \
910 913 } \
911 914 if (option_info) { \
912 915 FILE *tmp_fd = sm_outfd; \
913 916 sm_outfd = sql_outfd; \
914 917 sm_prefix(); \
915 918 sm_printf("SQL%s: insert %sinto " #table " values(", \
916 919 late ? "_late" : "", ignore ? "or ignore " : ""); \
917 920 sm_printf(values); \
918 921 sm_printf(");\n"); \
919 922 sm_outfd = tmp_fd; \
920 923 } \
921 924 } while (0)
922 925
923 926 #define sql_insert(table, values...) sql_insert_helper(table, 0, 0, 0, values);
924 927 #define sql_insert_or_ignore(table, values...) sql_insert_helper(table, 0, 1, 0, values);
925 928 #define sql_insert_late(table, values...) sql_insert_helper(table, 0, 0, 1, values);
926 929 #define sql_insert_cache(table, values...) sql_insert_helper(table, cache_db, 1, 0, values);
927 930
928 931 char *get_static_filter(struct symbol *sym);
929 932
930 933 void sql_insert_return_states(int return_id, const char *return_ranges,
931 934 int type, int param, const char *key, const char *value);
932 935 void sql_insert_caller_info(struct expression *call, int type, int param,
933 936 const char *key, const char *value);
934 937 void sql_insert_function_ptr(const char *fn, const char *struct_name);
935 938 void sql_insert_return_values(const char *return_values);
936 939 void sql_insert_return_implies(int type, int param, const char *key, const char *value);
937 940 void sql_insert_function_type_size(const char *member, const char *ranges);
938 941 void sql_insert_function_type_info(int type, const char *struct_type, const char *member, const char *value);
939 942 void sql_insert_type_info(int type, const char *member, const char *value);
940 943 void sql_insert_local_values(const char *name, const char *value);
941 944 void sql_insert_function_type_value(const char *type, const char *value);
942 945 void sql_insert_function_type(int param, const char *value);
943 946 void sql_insert_parameter_name(int param, const char *value);
944 947 void sql_insert_data_info(struct expression *data, int type, const char *value);
945 948 void sql_insert_data_info_var_sym(const char *var, struct symbol *sym, int type, const char *value);
946 949 void sql_save_constraint(const char *con);
947 950 void sql_save_constraint_required(const char *data, int op, const char *limit);
948 951 void sql_copy_constraint_required(const char *new_limit, const char *old_limit);
949 952 void sql_insert_fn_ptr_data_link(const char *ptr, const char *data);
950 953 void sql_insert_fn_data_link(struct expression *fn, int type, int param, const char *key, const char *value);
951 954 void sql_insert_mtag_about(mtag_t tag, const char *left_name, const char *right_name);
952 955 void insert_mtag_data(sval_t sval, struct range_list *rl);
953 956 void sql_insert_mtag_map(mtag_t tag, int offset, mtag_t container);
954 957 void sql_insert_mtag_alias(mtag_t orig, mtag_t alias);
955 958 int mtag_map_select_container(mtag_t tag, int offset, mtag_t *container);
956 959 int mtag_map_select_tag(mtag_t container, int offset, mtag_t *tag);
957 960
958 961 void sql_select_return_states(const char *cols, struct expression *call,
959 962 int (*callback)(void*, int, char**, char**), void *info);
960 963 void sql_select_call_implies(const char *cols, struct expression *call,
961 964 int (*callback)(void*, int, char**, char**));
962 965
963 966 void open_smatch_db(char *db_file);
964 967
965 968 /* smatch_files.c */
966 969 int open_data_file(const char *filename);
967 970 int open_schema_file(const char *schema);
968 971 struct token *get_tokens_file(const char *filename);
969 972
970 973 /* smatch.c */
971 974 extern char *option_debug_check;
972 975 extern char *option_project_str;
973 976 extern char *bin_dir;
974 977 extern char *data_dir;
975 978 extern int option_no_data;
976 979 extern int option_full_path;
977 980 extern int option_param_mapper;
978 981 extern int option_call_tree;
979 982 extern int num_checks;
980 983
981 984 enum project_type {
982 985 PROJ_NONE,
983 986 PROJ_KERNEL,
984 987 PROJ_WINE,
985 988 PROJ_ILLUMOS_KERNEL,
986 989 PROJ_ILLUMOS_USER,
987 990 PROJ_UNKNOWN,
988 991 };
989 992 extern enum project_type option_project;
990 993 const char *check_name(unsigned short id);
991 994 int id_from_name(const char *name);
992 995
993 996
994 997 /* smatch_buf_size.c */
995 998 int get_array_size(struct expression *expr);
996 999 int get_array_size_bytes(struct expression *expr);
997 1000 int get_array_size_bytes_min(struct expression *expr);
998 1001 int get_array_size_bytes_max(struct expression *expr);
999 1002 struct range_list *get_array_size_bytes_rl(struct expression *expr);
1000 1003 int get_real_array_size(struct expression *expr);
1001 1004 int last_member_is_resizable(struct symbol *type);
1002 1005 /* smatch_strlen.c */
1003 1006 int get_implied_strlen(struct expression *expr, struct range_list **rl);
1004 1007 int get_size_from_strlen(struct expression *expr);
1005 1008
1006 1009 /* smatch_capped.c */
1007 1010 int is_capped(struct expression *expr);
1008 1011 int is_capped_var_sym(const char *name, struct symbol *sym);
1009 1012
1010 1013 /* check_user_data.c */
1011 1014 int is_user_macro(struct expression *expr);
1012 1015 int is_user_data(struct expression *expr);
1013 1016 int is_capped_user_data(struct expression *expr);
1014 1017 int implied_user_data(struct expression *expr, struct range_list **rl);
1015 1018 struct stree *get_user_stree(void);
1016 1019 int get_user_rl(struct expression *expr, struct range_list **rl);
1017 1020 int get_user_rl_spammy(struct expression *expr, struct range_list **rl);
1018 1021 int is_user_rl(struct expression *expr);
1019 1022 int get_user_rl_var_sym(const char *name, struct symbol *sym, struct range_list **rl);
1020 1023
1021 1024 /* check_locking.c */
1022 1025 void print_held_locks();
1023 1026
1024 1027 /* check_assigned_expr.c */
1025 1028 struct expression *get_assigned_expr(struct expression *expr);
1026 1029 struct expression *get_assigned_expr_name_sym(const char *name, struct symbol *sym);
1027 1030 /* smatch_return_to_param.c */
1028 1031 void __add_return_to_param_mapping(struct expression *assign, const char *return_string);
1029 1032 char *map_call_to_param_name_sym(struct expression *expr, struct symbol **sym);
1030 1033
1031 1034 /* smatch_comparison.c */
1032 1035 struct compare_data {
1033 1036 /* The ->left and ->right expression pointers might be NULL (I'm lazy) */
1034 1037 struct expression *left;
1035 1038 const char *left_var;
1036 1039 struct var_sym_list *left_vsl;
1037 1040 int comparison;
1038 1041 struct expression *right;
1039 1042 const char *right_var;
1040 1043 struct var_sym_list *right_vsl;
1041 1044 };
1042 1045 DECLARE_ALLOCATOR(compare_data);
1043 1046 struct smatch_state *alloc_compare_state(
1044 1047 struct expression *left,
1045 1048 const char *left_var, struct var_sym_list *left_vsl,
1046 1049 int comparison,
1047 1050 struct expression *right,
1048 1051 const char *right_var, struct var_sym_list *right_vsl);
1049 1052 int filter_comparison(int orig, int op);
1050 1053 int merge_comparisons(int one, int two);
1051 1054 int combine_comparisons(int left_compare, int right_compare);
1052 1055 int state_to_comparison(struct smatch_state *state);
1053 1056 struct smatch_state *merge_compare_states(struct smatch_state *s1, struct smatch_state *s2);
1054 1057 int get_comparison(struct expression *left, struct expression *right);
1055 1058 int get_comparison_strings(const char *one, const char *two);
1056 1059 int possible_comparison(struct expression *a, int comparison, struct expression *b);
1057 1060 struct state_list *get_all_comparisons(struct expression *expr);
1058 1061 struct state_list *get_all_possible_equal_comparisons(struct expression *expr);
1059 1062 void __add_return_comparison(struct expression *call, const char *range);
1060 1063 void __add_comparison_info(struct expression *expr, struct expression *call, const char *range);
1061 1064 char *get_printed_param_name(struct expression *call, const char *param_name, struct symbol *param_sym);
1062 1065 char *name_sym_to_param_comparison(const char *name, struct symbol *sym);
1063 1066 char *expr_equal_to_param(struct expression *expr, int ignore);
1064 1067 char *expr_lte_to_param(struct expression *expr, int ignore);
1065 1068 char *expr_param_comparison(struct expression *expr, int ignore);
1066 1069 int flip_comparison(int op);
1067 1070 int negate_comparison(int op);
1068 1071 int remove_unsigned_from_comparison(int op);
1069 1072 int param_compare_limit_is_impossible(struct expression *expr, int left_param, char *left_key, char *value);
1070 1073 void filter_by_comparison(struct range_list **rl, int comparison, struct range_list *right);
1071 1074 struct sm_state *comparison_implication_hook(struct expression *expr,
1072 1075 struct state_list **true_stack,
1073 1076 struct state_list **false_stack);
1074 1077 void __compare_param_limit_hook(struct expression *left_expr, struct expression *right_expr,
1075 1078 const char *state_name,
1076 1079 struct smatch_state *true_state, struct smatch_state *false_state);
1077 1080 int impossibly_high_comparison(struct expression *expr);
1078 1081
1079 1082 /* smatch_sval.c */
1080 1083 sval_t *sval_alloc(sval_t sval);
1081 1084 sval_t *sval_alloc_permanent(sval_t sval);
1082 1085 sval_t sval_blank(struct expression *expr);
1083 1086 sval_t sval_type_val(struct symbol *type, long long val);
1084 1087 sval_t sval_from_val(struct expression *expr, long long val);
1085 1088 int sval_is_ptr(sval_t sval);
1086 1089 int sval_unsigned(sval_t sval);
1087 1090 int sval_signed(sval_t sval);
1088 1091 int sval_bits(sval_t sval);
1089 1092 int sval_bits_used(sval_t sval);
1090 1093 int sval_is_negative(sval_t sval);
1091 1094 int sval_is_positive(sval_t sval);
1092 1095 int sval_is_min(sval_t sval);
1093 1096 int sval_is_max(sval_t sval);
1094 1097 int sval_is_a_min(sval_t sval);
1095 1098 int sval_is_a_max(sval_t sval);
1096 1099 int sval_is_negative_min(sval_t sval);
1097 1100 int sval_cmp_t(struct symbol *type, sval_t one, sval_t two);
1098 1101 int sval_cmp_val(sval_t one, long long val);
1099 1102 sval_t sval_min(sval_t one, sval_t two);
1100 1103 sval_t sval_max(sval_t one, sval_t two);
1101 1104 int sval_too_low(struct symbol *type, sval_t sval);
1102 1105 int sval_too_high(struct symbol *type, sval_t sval);
1103 1106 int sval_fits(struct symbol *type, sval_t sval);
1104 1107 sval_t sval_cast(struct symbol *type, sval_t sval);
1105 1108 sval_t sval_preop(sval_t sval, int op);
1106 1109 sval_t sval_binop(sval_t left, int op, sval_t right);
1107 1110 int sval_binop_overflows(sval_t left, int op, sval_t right);
1108 1111 int sval_binop_overflows_no_sign(sval_t left, int op, sval_t right);
1109 1112 unsigned long long fls_mask(unsigned long long uvalue);
1110 1113 unsigned long long sval_fls_mask(sval_t sval);
1111 1114 const char *sval_to_str(sval_t sval);
1112 1115 const char *sval_to_numstr(sval_t sval);
1113 1116 sval_t ll_to_sval(long long val);
1114 1117
1115 1118 /* smatch_string_list.c */
1116 1119 int list_has_string(struct string_list *str_list, const char *str);
1117 1120 void insert_string(struct string_list **str_list, const char *str);
1118 1121 struct string_list *clone_str_list(struct string_list *orig);
1119 1122 struct string_list *combine_string_lists(struct string_list *one, struct string_list *two);
1120 1123
1121 1124 /* smatch_start_states.c */
1122 1125 struct stree *get_start_states(void);
1123 1126
1124 1127 /* smatch_recurse.c */
1125 1128 int has_symbol(struct expression *expr, struct symbol *sym);
1126 1129 int has_variable(struct expression *expr, struct expression *var);
1127 1130 int has_inc_dec(struct expression *expr);
1128 1131
1129 1132 /* smatch_stored_conditions.c */
1130 1133 struct smatch_state *get_stored_condition(struct expression *expr);
1131 1134 struct expression_list *get_conditions(struct expression *expr);
1132 1135 struct sm_state *stored_condition_implication_hook(struct expression *expr,
1133 1136 struct state_list **true_stack,
1134 1137 struct state_list **false_stack);
1135 1138
1136 1139 /* check_string_len.c */
1137 1140 int get_formatted_string_size(struct expression *call, int arg);
1138 1141
1139 1142 /* smatch_param_set.c */
1140 1143 int param_was_set(struct expression *expr);
1141 1144 int param_was_set_var_sym(const char *name, struct symbol *sym);
1142 1145 /* smatch_param_filter.c */
1143 1146 int param_has_filter_data(struct sm_state *sm);
1144 1147
1145 1148 /* smatch_links.c */
1146 1149 void set_up_link_functions(int id, int linkid);
1147 1150 struct smatch_state *merge_link_states(struct smatch_state *s1, struct smatch_state *s2);
1148 1151 void store_link(int link_id, const char *name, struct symbol *sym, const char *link_name, struct symbol *link_sym);
1149 1152
1150 1153 /* smatch_auto_copy.c */
1151 1154 void set_auto_copy(int owner);
1152 1155
1153 1156 /* check_buf_comparison */
1154 1157 struct expression *get_size_variable(struct expression *buf);
1155 1158 struct expression *get_array_variable(struct expression *size);
1156 1159
1157 1160 /* smatch_untracked_param.c */
1158 1161 void mark_untracked(struct expression *expr, int param, const char *key, const char *value);
1159 1162 void add_untracked_param_hook(void (func)(struct expression *call, int param));
1160 1163 void mark_all_params_untracked(int return_id, char *return_ranges, struct expression *expr);
1161 1164
1162 1165 /* smatch_strings.c */
1163 1166 struct state_list *get_strings(struct expression *expr);
1164 1167 struct expression *fake_string_from_mtag(mtag_t tag);
1165 1168
1166 1169 /* smatch_estate.c */
1167 1170 int estate_get_single_value(struct smatch_state *state, sval_t *sval);
1168 1171
1169 1172 /* smatch_address.c */
1170 1173 int get_address_rl(struct expression *expr, struct range_list **rl);
1171 1174 int get_member_offset(struct symbol *type, const char *member_name);
1172 1175 int get_member_offset_from_deref(struct expression *expr);
1173 1176
1174 1177 /* for now this is in smatch_used_parameter.c */
1175 1178 void __get_state_hook(int owner, const char *name, struct symbol *sym);
1176 1179
1177 1180 /* smatch_buf_comparison.c */
1178 1181 int db_var_is_array_limit(struct expression *array, const char *name, struct var_sym_list *vsl);
1179 1182
1180 1183 struct stree *get_all_return_states(void);
1181 1184 struct stree_stack *get_all_return_strees(void);
1182 1185 int on_atomic_dec_path(void);
1183 1186 int was_inced(const char *name, struct symbol *sym);
1184 1187
1185 1188 /* smatch_constraints.c */
1186 1189 char *get_constraint_str(struct expression *expr);
1187 1190 struct constraint_list *get_constraints(struct expression *expr);
1188 1191 char *unmet_constraint(struct expression *data, struct expression *offset);
1189 1192 char *get_required_constraint(const char *data_str);
1190 1193
1191 1194 /* smatch_container_of.c */
1192 1195 int get_param_from_container_of(struct expression *expr);
1193 1196 int get_offset_from_container_of(struct expression *expr);
1194 1197
1195 1198 /* smatch_mtag.c */
1196 1199 int get_string_mtag(struct expression *expr, mtag_t *tag);
1197 1200 int get_toplevel_mtag(struct symbol *sym, mtag_t *tag);
1198 1201 int get_mtag(struct expression *expr, mtag_t *tag);
1199 1202 int get_mtag_offset(struct expression *expr, mtag_t *tag, int *offset);
1200 1203 int create_mtag_alias(mtag_t tag, struct expression *expr, mtag_t *new);
1201 1204 int expr_to_mtag_offset(struct expression *expr, mtag_t *tag, int *offset);
1202 1205 void update_mtag_data(struct expression *expr);
1203 1206 int get_mtag_sval(struct expression *expr, sval_t *sval);
1204 1207 int get_mtag_addr_sval(struct expression *expr, sval_t *sval);
1205 1208
1206 1209 /* Trinity fuzzer stuff */
1207 1210 const char *get_syscall_arg_type(struct symbol *sym);
1208 1211
1209 1212 /* smatch_mem_tracker.c */
1210 1213 extern int option_mem;
1211 1214 unsigned long get_max_memory(void);
1212 1215
1213 1216 /* check_is_nospec.c */
1214 1217 bool is_nospec(struct expression *expr);
1215 1218
1216 1219 /* smatch_nul_terminator.c */
1217 1220 bool is_nul_terminated(struct expression *expr);
1218 1221
1219 1222 static inline int type_bits(struct symbol *type)
1220 1223 {
1221 1224 if (!type)
1222 1225 return 0;
1223 1226 if (type->type == SYM_PTR) /* Sparse doesn't set this for &pointers */
1224 1227 return bits_in_pointer;
1225 1228 if (type->type == SYM_ARRAY)
1226 1229 return bits_in_pointer;
1227 1230 if (!type->examined)
1228 1231 examine_symbol_type(type);
1229 1232 return type->bit_size;
1230 1233 }
1231 1234
1232 1235 static inline bool type_is_ptr(struct symbol *type)
1233 1236 {
1234 1237 return type && (type->type == SYM_PTR || type->type == SYM_ARRAY);
1235 1238 }
1236 1239
1237 1240 static inline int type_unsigned(struct symbol *base_type)
1238 1241 {
1239 1242 if (!base_type)
1240 1243 return 0;
1241 1244 if (base_type->ctype.modifiers & MOD_UNSIGNED)
1242 1245 return 1;
1243 1246 return 0;
1244 1247 }
1245 1248
1246 1249 static inline int type_positive_bits(struct symbol *type)
1247 1250 {
1248 1251 if (!type)
1249 1252 return 0;
1250 1253 if (type->type == SYM_ARRAY)
1251 1254 return bits_in_pointer - 1;
1252 1255 if (type_unsigned(type))
1253 1256 return type_bits(type);
1254 1257 return type_bits(type) - 1;
1255 1258 }
1256 1259
1257 1260 static inline int sval_positive_bits(sval_t sval)
1258 1261 {
1259 1262 return type_positive_bits(sval.type);
1260 1263 }
1261 1264
1262 1265 /*
1263 1266 * Returns -1 if one is smaller, 0 if they are the same and 1 if two is larger.
1264 1267 */
1265 1268 static inline int sval_cmp(sval_t one, sval_t two)
1266 1269 {
1267 1270 struct symbol *type;
1268 1271
1269 1272 type = one.type;
1270 1273 if (sval_positive_bits(two) > sval_positive_bits(one))
1271 1274 type = two.type;
1272 1275 if (type_bits(type) < 31)
1273 1276 type = &int_ctype;
1274 1277
1275 1278 one = sval_cast(type, one);
1276 1279 two = sval_cast(type, two);
1277 1280
1278 1281 if (type_unsigned(type)) {
1279 1282 if (one.uvalue < two.uvalue)
1280 1283 return -1;
1281 1284 if (one.uvalue == two.uvalue)
1282 1285 return 0;
1283 1286 return 1;
1284 1287 }
1285 1288 /* fix me handle type promotion and unsigned values */
1286 1289 if (one.value < two.value)
1287 1290 return -1;
1288 1291 if (one.value == two.value)
1289 1292 return 0;
1290 1293 return 1;
1291 1294 }
1292 1295
1293 1296 #endif /* !SMATCH_H_ */
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