smatch.h

   1 /*
   2  * sparse/smatch.h
   3  *
   4  * Copyright (C) 2006 Dan Carpenter.
   5  *
   6  *  Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 #ifndef         SMATCH_H_
  11 # define        SMATCH_H_
  12
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <limits.h>
  16 #include <sys/time.h>
  17 #include "lib.h"
  18 #include "allocate.h"
  19 #include "parse.h"
  20 #include "expression.h"
  21
  22 typedef struct {
  23         struct symbol *type;
  24         union {
  25                 long long value;
  26                 unsigned long long uvalue;
  27         };
  28 } sval_t;
  29
  30 struct smatch_state {
  31         const char *name;
  32         void *data;
  33 };
  34 #define STATE(_x) static struct smatch_state _x = { .name = #_x }
  35 extern struct smatch_state undefined;
  36 extern struct smatch_state merged;
  37 extern struct smatch_state true_state;
  38 extern struct smatch_state false_state;
  39 DECLARE_ALLOCATOR(smatch_state);
  40
  41 static inline void *INT_PTR(int i)
  42 {
  43         return (void *)(long)i;
  44 }
  45
  46 static inline int PTR_INT(void *p)
  47 {
  48         return (int)(long)p;
  49 }
  50
  51 struct sm_state {
  52         unsigned short owner;
  53         unsigned int merged:1;
  54         unsigned int implied:1;
  55         const char *name;
  56         struct symbol *sym;
  57         struct smatch_state *state;
  58         unsigned int line;
  59         struct state_list *pool;
  60         struct sm_state *left;
  61         struct sm_state *right;
  62         unsigned int nr_children;
  63         struct state_list *possible;
  64 };
  65
  66 struct var_sym {
  67         char *var;
  68         struct symbol *sym;
  69 };
  70 DECLARE_ALLOCATOR(var_sym);
  71 DECLARE_PTR_LIST(var_sym_list, struct var_sym);
  72
  73 struct tracker {
  74         int owner;
  75         char *name;
  76         struct symbol *sym;
  77 };
  78 DECLARE_ALLOCATOR(tracker);
  79 DECLARE_PTR_LIST(tracker_list, struct tracker);
  80
  81 enum hook_type {
  82         EXPR_HOOK,
  83         STMT_HOOK,
  84         SYM_HOOK,
  85         STRING_HOOK,
  86         DECLARATION_HOOK,
  87         ASSIGNMENT_HOOK,
  88         RAW_ASSIGNMENT_HOOK,
  89         GLOBAL_ASSIGNMENT_HOOK,
  90         LOGIC_HOOK,
  91         CONDITION_HOOK,
  92         PRELOOP_HOOK,
  93         SELECT_HOOK,
  94         WHOLE_CONDITION_HOOK,
  95         FUNCTION_CALL_HOOK,
  96         CALL_HOOK_AFTER_INLINE,
  97         CALL_ASSIGNMENT_HOOK,
  98         MACRO_ASSIGNMENT_HOOK,
  99         BINOP_HOOK,
 100         OP_HOOK,
 101         DEREF_HOOK,
 102         CASE_HOOK,
 103         ASM_HOOK,
 104         CAST_HOOK,
 105         SIZEOF_HOOK,
 106         BASE_HOOK,
 107         FUNC_DEF_HOOK,
 108         AFTER_DEF_HOOK,
 109         END_FUNC_HOOK,
 110         AFTER_FUNC_HOOK,
 111         RETURN_HOOK,
 112         INLINE_FN_START,
 113         INLINE_FN_END,
 114         END_FILE_HOOK,
 115 };
 116
 117 #define TRUE 1
 118 #define FALSE 0
 119
 120 struct range_list;
 121
 122 void add_hook(void *func, enum hook_type type);
 123 typedef struct smatch_state *(merge_func_t)(struct smatch_state *s1, struct smatch_state *s2);
 124 typedef struct smatch_state *(unmatched_func_t)(struct sm_state *state);
 125 void add_merge_hook(int client_id, merge_func_t *func);
 126 void add_unmatched_state_hook(int client_id, unmatched_func_t *func);
 127 typedef void (scope_hook)(void *data);
 128 void add_scope_hook(scope_hook *hook, void *data);
 129 typedef void (func_hook)(const char *fn, struct expression *expr, void *data);
 130 typedef void (implication_hook)(const char *fn, struct expression *call_expr,
 131                                 struct expression *assign_expr, void *data);
 132 typedef void (return_implies_hook)(struct expression *call_expr,
 133                                    int param, char *key, char *value);
 134 typedef int (implied_return_hook)(struct expression *call_expr, void *info, struct range_list **rl);
 135 void add_function_hook(const char *look_for, func_hook *call_back, void *data);
 136
 137 void add_function_assign_hook(const char *look_for, func_hook *call_back,
 138                               void *info);
 139 void add_implied_return_hook(const char *look_for,
 140                              implied_return_hook *call_back,
 141                              void *info);
 142 void add_macro_assign_hook(const char *look_for, func_hook *call_back,
 143                               void *info);
 144 void add_macro_assign_hook_extra(const char *look_for, func_hook *call_back,
 145                               void *info);
 146 void return_implies_state(const char *look_for, long long start, long long end,
 147                          implication_hook *call_back, void *info);
 148 void select_return_states_hook(int type, return_implies_hook *callback);
 149 void select_return_states_before(void (*fn)(void));
 150 void select_return_states_after(void (*fn)(void));
 151 int get_implied_return(struct expression *expr, struct range_list **rl);
 152
 153 typedef void (modification_hook)(struct sm_state *sm, struct expression *mod_expr);
 154 void add_modification_hook(int owner, modification_hook *call_back);
 155 void add_indirect_modification_hook(int owner, modification_hook *call_back);
 156
 157 const char *get_filename(void);
 158 const char *get_base_file(void);
 159 char *get_function(void);
 160 int get_lineno(void);
 161 extern int final_pass;
 162 extern struct symbol *cur_func_sym;
 163 extern int option_debug;
 164 extern int local_debug;
 165
 166 extern FILE *sm_outfd;
 167 #define sm_printf(msg...) do { if (final_pass || option_debug) fprintf(sm_outfd, msg); } while (0)
 168
 169 static inline void sm_prefix(void)
 170 {
 171         sm_printf("%s:%d %s() ", get_filename(), get_lineno(), get_function());
 172 }
 173
 174 static inline void print_implied_debug_msg();
 175
 176 #define sm_msg(msg...) \
 177 do {                                                           \
 178         print_implied_debug_msg();                             \
 179         if (!option_debug && !final_pass)                      \
 180                 break;                                         \
 181         sm_prefix();                                           \
 182         sm_printf(msg);                                        \
 183         sm_printf("\n");                                       \
 184 } while (0)
 185
 186 #define local_debug(msg...)                                     \
 187 do {                                                            \
 188         if (local_debug)                                        \
 189                 sm_msg(msg);                                    \
 190 } while (0)
 191
 192 extern char *implied_debug_msg;
 193 static inline void print_implied_debug_msg()
 194 {
 195         static struct symbol *last_printed = NULL;
 196
 197         if (!implied_debug_msg)
 198                 return;
 199         if (last_printed == cur_func_sym)
 200                 return;
 201         last_printed = cur_func_sym;
 202         sm_msg("%s", implied_debug_msg);
 203 }
 204
 205 #define sm_debug(msg...) do { if (option_debug) sm_printf(msg); } while (0)
 206
 207 #define sm_info(msg...) do {                                    \
 208         if (option_debug || (option_info && final_pass)) {      \
 209                 sm_prefix();                                    \
 210                 sm_printf("info: ");                            \
 211                 sm_printf(msg);                                 \
 212                 sm_printf("\n");                                \
 213         }                                                       \
 214 } while(0)
 215
 216 struct smatch_state *get_state(int owner, const char *name, struct symbol *sym);
 217 struct smatch_state *get_state_expr(int owner, struct expression *expr);
 218 struct state_list *get_possible_states(int owner, const char *name,
 219                                        struct symbol *sym);
 220 struct state_list *get_possible_states_expr(int owner, struct expression *expr);
 221 struct sm_state *set_state(int owner, const char *name, struct symbol *sym,
 222                struct smatch_state *state);
 223 struct sm_state *set_state_expr(int owner, struct expression *expr,
 224                 struct smatch_state *state);
 225 void delete_state(int owner, const char *name, struct symbol *sym);
 226 void delete_state_expr(int owner, struct expression *expr);
 227 void set_true_false_states(int owner, const char *name, struct symbol *sym,
 228                            struct smatch_state *true_state,
 229                            struct smatch_state *false_state);
 230 void set_true_false_states_expr(int owner, struct expression *expr,
 231                            struct smatch_state *true_state,
 232                            struct smatch_state *false_state);
 233
 234 struct state_list *get_all_states_slist(int owner, struct state_list *source);
 235 struct state_list *get_all_states(int id);
 236 int is_reachable(void);
 237
 238 /* smatch_helper.c */
 239 char *alloc_string(const char *str);
 240 void free_string(char *str);
 241 void append(char *dest, const char *data, int buff_len);
 242 void remove_parens(char *str);
 243 struct smatch_state *alloc_state_num(int num);
 244 struct expression *get_argument_from_call_expr(struct expression_list *args,
 245                                                int num);
 246
 247 char *expr_to_var(struct expression *expr);
 248 char *expr_to_str(struct expression *expr);
 249 char *expr_to_str_sym(struct expression *expr,
 250                                      struct symbol **sym_ptr);
 251 char *expr_to_var_sym(struct expression *expr,
 252                              struct symbol **sym_ptr);
 253
 254 int sym_name_is(const char *name, struct expression *expr);
 255 int get_value(struct expression *expr, sval_t *val);
 256 int get_implied_value(struct expression *expr, sval_t *val);
 257 int get_implied_min(struct expression *expr, sval_t *sval);
 258 int get_implied_max(struct expression *expr, sval_t *val);
 259 int get_hard_max(struct expression *expr, sval_t *sval);
 260 int get_fuzzy_min(struct expression *expr, sval_t *min);
 261 int get_fuzzy_max(struct expression *expr, sval_t *max);
 262 int get_absolute_min(struct expression *expr, sval_t *sval);
 263 int get_absolute_max(struct expression *expr, sval_t *sval);
 264 int parse_call_math(struct expression *expr, char *math, sval_t *val);
 265 int is_zero(struct expression *expr);
 266 int known_condition_true(struct expression *expr);
 267 int known_condition_false(struct expression *expr);
 268 int implied_condition_true(struct expression *expr);
 269 int implied_condition_false(struct expression *expr);
 270
 271 int is_array(struct expression *expr);
 272 struct expression *get_array_name(struct expression *expr);
 273 struct expression *get_array_offset(struct expression *expr);
 274 const char *show_state(struct smatch_state *state);
 275 struct statement *get_expression_statement(struct expression *expr);
 276 struct expression *strip_parens(struct expression *expr);
 277 struct expression *strip_expr(struct expression *expr);
 278 void scoped_state(int my_id, const char *name, struct symbol *sym);
 279 int is_error_return(struct expression *expr);
 280 int getting_address(void);
 281 char *get_member_name(struct expression *expr);
 282 char *get_fnptr_name(struct expression *expr);
 283 int positions_eq(struct position pos1, struct position pos2);
 284 struct statement *get_current_statement(void);
 285 int get_param_num_from_sym(struct symbol *sym);
 286 int ms_since(struct timeval *start);
 287
 288 /* smatch_type.c */
 289 struct symbol *get_real_base_type(struct symbol *sym);
 290 int type_bits(struct symbol *type);
 291 int type_positive_bits(struct symbol *type);
 292 struct symbol *get_pointer_type(struct expression *expr);
 293 struct symbol *get_type(struct expression *expr);
 294 int type_unsigned(struct symbol *base_type);
 295 int type_signed(struct symbol *base_type);
 296 int expr_unsigned(struct expression *expr);
 297 int returns_unsigned(struct symbol *base_type);
 298 int is_pointer(struct expression *expr);
 299 int returns_pointer(struct symbol *base_type);
 300 sval_t sval_type_max(struct symbol *base_type);
 301 sval_t sval_type_min(struct symbol *base_type);
 302 int nr_bits(struct expression *expr);
 303 int is_void_pointer(struct expression *expr);
 304 int is_char_pointer(struct expression *expr);
 305 int is_static(struct expression *expr);
 306 int types_equiv(struct symbol *one, struct symbol *two);
 307 int fn_static(void);
 308 const char *global_static();
 309 struct symbol *cur_func_return_type(void);
 310 struct symbol *get_arg_type(struct expression *fn, int arg);
 311 struct symbol *get_member_type_from_key(struct expression *expr, char *key);
 312
 313 /* smatch_ignore.c */
 314 void add_ignore(int owner, const char *name, struct symbol *sym);
 315 int is_ignored(int owner, const char *name, struct symbol *sym);
 316
 317 /* smatch_var_sym */
 318 struct var_sym *alloc_var_sym(const char *var, struct symbol *sym);
 319 struct var_sym_list *expr_to_vsl(struct expression *expr);
 320 void add_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym);
 321 void add_var_sym_expr(struct var_sym_list **list, struct expression *expr);
 322 void del_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym);
 323 int in_var_sym_list(struct var_sym_list *list, const char *var, struct symbol *sym);
 324 struct var_sym_list *clone_var_sym_list(struct var_sym_list *from_vsl);
 325 void merge_var_sym_list(struct var_sym_list **dest, struct var_sym_list *src);
 326 struct var_sym_list *combine_var_sym_lists(struct var_sym_list *one, struct var_sym_list *two);
 327 void free_var_sym_list(struct var_sym_list **list);
 328 void free_var_syms_and_list(struct var_sym_list **list);
 329
 330 /* smatch_tracker */
 331 struct tracker *alloc_tracker(int owner, const char *name, struct symbol *sym);
 332 void add_tracker(struct tracker_list **list, int owner, const char *name,
 333                 struct symbol *sym);
 334 void add_tracker_expr(struct tracker_list **list, int owner, struct expression *expr);
 335 void del_tracker(struct tracker_list **list, int owner, const char *name,
 336                 struct symbol *sym);
 337 int in_tracker_list(struct tracker_list *list, int owner, const char *name,
 338                 struct symbol *sym);
 339 void free_tracker_list(struct tracker_list **list);
 340 void free_trackers_and_list(struct tracker_list **list);
 341
 342 /* smatch_conditions */
 343 int in_condition(void);
 344
 345 /* smatch_flow.c */
 346
 347 void smatch (int argc, char **argv);
 348 int inside_loop(void);
 349 struct expression *get_switch_expr(void);
 350 int in_expression_statement(void);
 351 void __process_post_op_stack(void);
 352 void __split_expr(struct expression *expr);
 353 void __split_stmt(struct statement *stmt);
 354 extern int option_assume_loops;
 355 extern int option_known_conditions;
 356 extern int option_two_passes;
 357 extern int option_no_db;
 358 extern int option_file_output;
 359 extern int option_time;
 360 extern struct expression_list *big_expression_stack;
 361 extern struct statement_list *big_statement_stack;
 362 int inlinable(struct expression *expr);
 363 extern int __inline_call;
 364 extern struct expression *__inline_fn;
 365 extern int __in_pre_condition;
 366 extern int __bail_on_rest_of_function;
 367
 368 /* smatch_conditions */
 369 void __split_whole_condition(struct expression *expr);
 370 void __handle_logic(struct expression *expr);
 371 int is_condition(struct expression *expr);
 372 int __handle_condition_assigns(struct expression *expr);
 373 int __handle_select_assigns(struct expression *expr);
 374 int __handle_expr_statement_assigns(struct expression *expr);
 375
 376 /* smatch_implied.c */
 377 extern int option_debug_implied;
 378 extern int option_debug_related;
 379 extern int option_no_implied;
 380 struct range_list_stack;
 381 struct state_list *__implied_case_slist(struct expression *switch_expr,
 382                                         struct expression *case_expr,
 383                                         struct range_list_stack **remaining_cases,
 384                                         struct state_list **raw_slist);
 385 struct range_list *__get_implied_values(struct expression *switch_expr);
 386 void overwrite_states_using_pool(struct sm_state *sm);
 387
 388 /* smatch_extras.c */
 389 #define SMATCH_EXTRA 1 /* this is my_id from smatch extra set in smatch.c */
 390
 391 struct data_range {
 392         sval_t min;
 393         sval_t max;
 394 };
 395
 396 static const long long valid_ptr_max = LONG_MAX;
 397 static const long long valid_ptr_min = 4096;
 398 static const sval_t valid_ptr_max_sval = {
 399         .type = &ptr_ctype,
 400         {.value = LONG_MAX},
 401 };
 402 static const sval_t valid_ptr_min_sval = {
 403         .type = &ptr_ctype,
 404         {.value = 4096},
 405 };
 406
 407 /* smatch_absolute.c */
 408 int get_absolute_min_helper(struct expression *expr, sval_t *sval);
 409 int get_absolute_max_helper(struct expression *expr, sval_t *sval);
 410
 411 /* smatch_local_values.c */
 412 int get_local_rl(struct expression *expr, struct range_list **rl);
 413 int get_local_max_helper(struct expression *expr, sval_t *sval);
 414 int get_local_min_helper(struct expression *expr, sval_t *sval);
 415
 416 /* smatch_states.c */
 417 void __push_fake_cur_slist();
 418 struct state_list *__pop_fake_cur_slist();
 419 void __free_fake_cur_slist();
 420 void __set_fake_cur_slist_fast(struct state_list *slist);
 421 void __pop_fake_cur_slist_fast(void);
 422 void __merge_slist_into_cur(struct state_list *slist);
 423
 424 int unreachable(void);
 425 void __set_sm(struct sm_state *sm);
 426 struct state_list *__get_cur_slist(void);
 427 void __set_true_false_sm(struct sm_state *true_state,
 428                         struct sm_state *false_state);
 429 void nullify_path(void);
 430 void __match_nullify_path_hook(const char *fn, struct expression *expr,
 431                                void *unused);
 432 void __unnullify_path(void);
 433 int __path_is_null(void);
 434 void save_all_states(void);
 435 void nullify_all_states(void);
 436 void restore_all_states(void);
 437 void clear_all_states(void);
 438
 439 struct sm_state *get_sm_state(int owner, const char *name,
 440                                 struct symbol *sym);
 441 struct sm_state *get_sm_state_expr(int owner, struct expression *expr);
 442 void __push_true_states(void);
 443 void __use_false_states(void);
 444 void __discard_false_states(void);
 445 void __merge_false_states(void);
 446 void __merge_true_states(void);
 447
 448 void __negate_cond_stacks(void);
 449 void __use_pre_cond_states(void);
 450 void __use_cond_true_states(void);
 451 void __use_cond_false_states(void);
 452 void __push_cond_stacks(void);
 453 struct state_list *__copy_cond_true_states(void);
 454 struct state_list *__copy_cond_false_states(void);
 455 struct state_list *__pop_cond_true_stack(void);
 456 struct state_list *__pop_cond_false_stack(void);
 457 void __and_cond_states(void);
 458 void __or_cond_states(void);
 459 void __save_pre_cond_states(void);
 460 void __discard_pre_cond_states(void);
 461 void __use_cond_states(void);
 462 extern struct state_list *__last_base_slist;
 463
 464 void __warn_on_silly_pre_loops(void);
 465
 466 void __push_continues(void);
 467 void __discard_continues(void);
 468 void __process_continues(void);
 469 void __merge_continues(void);
 470
 471 void __push_breaks(void);
 472 void __process_breaks(void);
 473 int __has_breaks(void);
 474 void __merge_breaks(void);
 475 void __use_breaks(void);
 476
 477 void __save_switch_states(struct expression *switch_expr);
 478 void __discard_switches(void);
 479 void __merge_switches(struct expression *switch_expr, struct expression *case_expr);
 480 void __push_default(void);
 481 void __set_default(void);
 482 int __pop_default(void);
 483
 484 void __push_conditions(void);
 485 void __discard_conditions(void);
 486
 487 void __save_gotos(const char *name);
 488 void __merge_gotos(const char *name);
 489
 490 void __print_cur_slist(void);
 491
 492 /* smatch_hooks.c */
 493 void __pass_to_client(void *data, enum hook_type type);
 494 void __pass_to_client_no_data(enum hook_type type);
 495 void __pass_case_to_client(struct expression *switch_expr,
 496                            struct expression *case_expr);
 497 int __has_merge_function(int client_id);
 498 struct smatch_state *__client_merge_function(int owner,
 499                                              struct smatch_state *s1,
 500                                              struct smatch_state *s2);
 501 struct smatch_state *__client_unmatched_state_function(struct sm_state *sm);
 502 void __push_scope_hooks(void);
 503 void __call_scope_hooks(void);
 504
 505 /* smatch_function_hooks.c */
 506 void create_function_hook_hash(void);
 507 void __match_initializer_call(struct symbol *sym);
 508
 509 /* smatch_db.c */
 510 enum info_type {
 511         INTERNAL        = 0,
 512         PARAM_VALUE     = 1,
 513         BUF_SIZE        = 2,
 514         USER_DATA       = 3,
 515         CAPPED_DATA     = 4,
 516         RETURN_VALUE    = 5,
 517         DEREFERENCE     = 6,
 518         RANGE_CAP       = 7,
 519         LOCK_HELD       = 8,
 520         LOCK_RELEASED   = 9,
 521         ABSOLUTE_LIMITS = 10,
 522         LIMITED_VALUE   = 11,
 523         ADDED_VALUE     = 12,
 524         FILTER_VALUE    = 13,
 525         PARAM_CLEARED   = 14,
 526 };
 527
 528 void select_caller_info_hook(void (*callback)(const char *name, struct symbol *sym, char *key, char *value), int type);
 529 void add_member_info_callback(int owner, void (*callback)(struct expression *call, int param, char *printed_name, struct smatch_state *state));
 530 void add_split_return_callback(void (*fn)(int return_id, char *return_ranges, struct expression *returned_expr));
 531 void add_returned_member_callback(int owner, void (*callback)(int return_id, char *return_ranges, char *printed_name, struct smatch_state *state));
 532 void select_call_implies_hook(int type, void (*callback)(struct expression *arg, char *value));
 533 struct range_list *db_return_vals(struct expression *expr);
 534 char *return_state_to_var_sym(struct expression *expr, int param, char *key, struct symbol **sym);
 535 char *get_variable_from_key(struct expression *arg, char *key, struct symbol **sym);
 536 const char *get_param_name(struct sm_state *sm);
 537
 538 #define run_sql(call_back, sql...)    \
 539 do {                                  \
 540         char sql_txt[1024];           \
 541         if (option_no_db)             \
 542                 break;                \
 543         snprintf(sql_txt, 1024, sql); \
 544         sm_debug("%s\n", sql_txt);    \
 545         sql_exec(call_back, sql_txt); \
 546 } while (0)
 547
 548 /* like run_sql() but for the in-memory database */
 549 #define mem_sql(call_back, sql...)                                              \
 550 do {                                                                            \
 551         char sql_txt[1024];                                                     \
 552                                                                                 \
 553         snprintf(sql_txt, sizeof(sql_txt), sql);                                \
 554         sm_debug("in-mem: %s\n", sql_txt);                                      \
 555         sql_mem_exec(call_back, sql_txt);                                       \
 556 } while (0)
 557
 558 void sql_insert_return_states(int return_id, const char *return_ranges,
 559                 int type, int param, const char *key, const char *value);
 560 void sql_insert_caller_info(struct expression *call, int type, int param,
 561                 const char *key, const char *value);
 562 void sql_insert_function_ptr(const char *fn, const char *struct_name);
 563 void sql_insert_return_values(const char *return_values);
 564 void sql_insert_call_implies(int type, int param, int value);
 565 void sql_insert_type_size(const char *member, int size);
 566 void sql_insert_local_values(const char *name, const char *value);
 567
 568 void sql_select_return_states(const char *cols, struct expression *call,
 569         int (*callback)(void*, int, char**, char**));
 570 void sql_select_caller_info(const char *cols, struct symbol *sym,
 571         int (*callback)(void*, int, char**, char**));
 572 void sql_select_call_implies(const char *cols, struct expression *call,
 573         int (*callback)(void*, int, char**, char**));
 574
 575 void sql_exec(int (*callback)(void*, int, char**, char**), const char *sql);
 576 void sql_mem_exec(int (*callback)(void*, int, char**, char**), const char *sql);
 577
 578 void open_smatch_db(void);
 579
 580 /* smatch_files.c */
 581 int open_data_file(const char *filename);
 582 struct token *get_tokens_file(const char *filename);
 583
 584 /* smatch.c */
 585 extern char *option_debug_check;
 586 extern char *option_project_str;
 587 extern char *data_dir;
 588 extern int option_no_data;
 589 extern int option_spammy;
 590 extern int option_full_path;
 591 extern int option_param_mapper;
 592 extern int option_info;
 593 extern int option_call_tree;
 594 extern int num_checks;
 595
 596 enum project_type {
 597         PROJ_NONE,
 598         PROJ_KERNEL,
 599         PROJ_WINE,
 600 };
 601 extern enum project_type option_project;
 602 const char *check_name(unsigned short id);
 603
 604
 605 /* smatch_buf_size.c */
 606 int get_array_size(struct expression *expr);
 607 int get_array_size_bytes(struct expression *expr);
 608 int get_array_size_bytes_min(struct expression *expr);
 609 int get_real_array_size(struct expression *expr);
 610
 611 /* smatch_capped.c */
 612 int is_capped(struct expression *expr);
 613 int is_capped_var_sym(const char *name, struct symbol *sym);
 614
 615 /* check_user_data.c */
 616 int is_user_macro(struct expression *expr);
 617 int is_user_data(struct expression *expr);
 618 int is_capped_user_data(struct expression *expr);
 619
 620 /* check_locking.c */
 621 void print_held_locks();
 622
 623 /* check_assigned_expr.c */
 624 struct expression *get_assigned_expr(struct expression *expr);
 625
 626 /* smatch_comparison.c */
 627 int get_comparison(struct expression *left, struct expression *right);
 628 void __add_comparison_info(struct expression *expr, struct expression *call, const char *range);
 629 char *expr_equal_to_param(struct expression *expr);
 630 char *expr_lte_to_param(struct expression *expr);
 631
 632 /* smatch_sval.c */
 633 sval_t *sval_alloc(sval_t sval);
 634 sval_t *sval_alloc_permanent(sval_t sval);
 635 sval_t sval_blank(struct expression *expr);
 636 sval_t sval_type_val(struct symbol *type, long long val);
 637 sval_t sval_from_val(struct expression *expr, long long val);
 638 int sval_unsigned(sval_t sval);
 639 int sval_signed(sval_t sval);
 640 int sval_bits(sval_t sval);
 641 int sval_positive_bits(sval_t sval);
 642 int sval_bits_used(sval_t sval);
 643 int sval_is_negative(sval_t sval);
 644 int sval_is_positive(sval_t sval);
 645 int sval_is_min(sval_t sval);
 646 int sval_is_max(sval_t sval);
 647 int sval_is_a_min(sval_t sval);
 648 int sval_is_a_max(sval_t sval);
 649 int sval_is_negative_min(sval_t sval);
 650 int sval_cmp(sval_t one, sval_t two);
 651 int sval_cmp_t(struct symbol *type, sval_t one, sval_t two);
 652 int sval_cmp_val(sval_t one, long long val);
 653 sval_t sval_min(sval_t one, sval_t two);
 654 sval_t sval_max(sval_t one, sval_t two);
 655 int sval_too_low(struct symbol *type, sval_t sval);
 656 int sval_too_high(struct symbol *type, sval_t sval);
 657 int sval_fits(struct symbol *type, sval_t sval);
 658 sval_t sval_cast(struct symbol *type, sval_t sval);
 659 sval_t sval_preop(sval_t sval, int op);
 660 sval_t sval_binop(sval_t left, int op, sval_t right);
 661 int sval_binop_overflows(sval_t left, int op, sval_t right);
 662 const char *sval_to_str(sval_t sval);
 663 const char *sval_to_numstr(sval_t sval);
 664 sval_t ll_to_sval(long long val);
 665
 666 /* smatch_string_list.c */
 667 int list_has_string(struct string_list *str_list, char *str);
 668 void insert_string(struct string_list **str_list, char *str);
 669 struct string_list *clone_str_list(struct string_list *orig);
 670 struct string_list *combine_string_lists(struct string_list *one, struct string_list *two);
 671
 672 /* smatch_clear_buffer.c */
 673 int is_uninitialized(struct expression *expr);
 674 int has_uninitialized_members(struct expression *expr);
 675
 676 /* smatch_start_states.c */
 677 struct state_list *get_start_states(void);
 678
 679 /* smatch_recurse.c */
 680 int has_symbol(struct expression *expr, struct symbol *sym);
 681 int has_variable(struct expression *expr, struct expression *var);
 682
 683 #endif      /* !SMATCH_H_ */