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 short merged:1;
  54         unsigned short implied:1;
  55         unsigned int nr_children;
  56         unsigned int line;
  57         const char *name;
  58         struct symbol *sym;
  59         struct smatch_state *state;
  60         struct state_list *pool;
  61         struct sm_state *left;
  62         struct sm_state *right;
  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 int outside_of_function(void);
 158 const char *get_filename(void);
 159 const char *get_base_file(void);
 160 char *get_function(void);
 161 int get_lineno(void);
 162 extern int final_pass;
 163 extern struct symbol *cur_func_sym;
 164 extern int option_debug;
 165 extern int local_debug;
 166 extern int option_info;
 167 int is_silenced_function(void);
 168
 169 extern FILE *sm_outfd;
 170 #define sm_printf(msg...) do { if (final_pass || option_debug) fprintf(sm_outfd, msg); } while (0)
 171
 172 static inline void sm_prefix(void)
 173 {
 174         sm_printf("%s:%d %s() ", get_filename(), get_lineno(), get_function());
 175 }
 176
 177 static inline void print_implied_debug_msg();
 178
 179 #define sm_msg(msg...) \
 180 do {                                                           \
 181         print_implied_debug_msg();                             \
 182         if (!option_debug && !final_pass)                      \
 183                 break;                                         \
 184         if (!option_info && is_silenced_function())            \
 185                 break;                                         \
 186         sm_prefix();                                           \
 187         sm_printf(msg);                                        \
 188         sm_printf("\n");                                       \
 189 } while (0)
 190
 191 #define local_debug(msg...)                                     \
 192 do {                                                            \
 193         if (local_debug)                                        \
 194                 sm_msg(msg);                                    \
 195 } while (0)
 196
 197 extern char *implied_debug_msg;
 198 static inline void print_implied_debug_msg()
 199 {
 200         static struct symbol *last_printed = NULL;
 201
 202         if (!implied_debug_msg)
 203                 return;
 204         if (last_printed == cur_func_sym)
 205                 return;
 206         last_printed = cur_func_sym;
 207         sm_msg("%s", implied_debug_msg);
 208 }
 209
 210 #define sm_debug(msg...) do { if (option_debug) sm_printf(msg); } while (0)
 211
 212 #define sm_info(msg...) do {                                    \
 213         if (option_debug || (option_info && final_pass)) {      \
 214                 sm_prefix();                                    \
 215                 sm_printf("info: ");                            \
 216                 sm_printf(msg);                                 \
 217                 sm_printf("\n");                                \
 218         }                                                       \
 219 } while(0)
 220
 221 struct smatch_state *get_state(int owner, const char *name, struct symbol *sym);
 222 struct smatch_state *get_state_expr(int owner, struct expression *expr);
 223 struct state_list *get_possible_states(int owner, const char *name,
 224                                        struct symbol *sym);
 225 struct state_list *get_possible_states_expr(int owner, struct expression *expr);
 226 struct sm_state *set_state(int owner, const char *name, struct symbol *sym,
 227                struct smatch_state *state);
 228 struct sm_state *set_state_expr(int owner, struct expression *expr,
 229                 struct smatch_state *state);
 230 void delete_state(int owner, const char *name, struct symbol *sym);
 231 void delete_state_expr(int owner, struct expression *expr);
 232 void set_true_false_states(int owner, const char *name, struct symbol *sym,
 233                            struct smatch_state *true_state,
 234                            struct smatch_state *false_state);
 235 void set_true_false_states_expr(int owner, struct expression *expr,
 236                            struct smatch_state *true_state,
 237                            struct smatch_state *false_state);
 238
 239 struct state_list *get_all_states_slist(int owner, struct state_list *source);
 240 struct state_list *get_all_states(int id);
 241 int is_reachable(void);
 242
 243 /* smatch_helper.c */
 244 char *alloc_string(const char *str);
 245 void free_string(char *str);
 246 void append(char *dest, const char *data, int buff_len);
 247 void remove_parens(char *str);
 248 struct smatch_state *alloc_state_num(int num);
 249 struct expression *get_argument_from_call_expr(struct expression_list *args,
 250                                                int num);
 251
 252 char *expr_to_var(struct expression *expr);
 253 char *expr_to_str(struct expression *expr);
 254 char *expr_to_str_sym(struct expression *expr,
 255                                      struct symbol **sym_ptr);
 256 char *expr_to_var_sym(struct expression *expr,
 257                              struct symbol **sym_ptr);
 258
 259 int sym_name_is(const char *name, struct expression *expr);
 260 int get_const_value(struct expression *expr, sval_t *sval);
 261 int get_value(struct expression *expr, sval_t *val);
 262 int get_implied_value(struct expression *expr, sval_t *val);
 263 int get_implied_min(struct expression *expr, sval_t *sval);
 264 int get_implied_max(struct expression *expr, sval_t *val);
 265 int get_hard_max(struct expression *expr, sval_t *sval);
 266 int get_fuzzy_min(struct expression *expr, sval_t *min);
 267 int get_fuzzy_max(struct expression *expr, sval_t *max);
 268 int get_absolute_min(struct expression *expr, sval_t *sval);
 269 int get_absolute_max(struct expression *expr, sval_t *sval);
 270 int parse_call_math(struct expression *expr, char *math, sval_t *val);
 271 int is_zero(struct expression *expr);
 272 int known_condition_true(struct expression *expr);
 273 int known_condition_false(struct expression *expr);
 274 int implied_condition_true(struct expression *expr);
 275 int implied_condition_false(struct expression *expr);
 276
 277 int is_array(struct expression *expr);
 278 struct expression *get_array_name(struct expression *expr);
 279 struct expression *get_array_offset(struct expression *expr);
 280 const char *show_state(struct smatch_state *state);
 281 struct statement *get_expression_statement(struct expression *expr);
 282 struct expression *strip_parens(struct expression *expr);
 283 struct expression *strip_expr(struct expression *expr);
 284 void scoped_state(int my_id, const char *name, struct symbol *sym);
 285 int is_error_return(struct expression *expr);
 286 int getting_address(void);
 287 char *get_member_name(struct expression *expr);
 288 char *get_fnptr_name(struct expression *expr);
 289 int positions_eq(struct position pos1, struct position pos2);
 290 struct statement *get_current_statement(void);
 291 int get_param_num_from_sym(struct symbol *sym);
 292 int get_param_num(struct expression *expr);
 293 int ms_since(struct timeval *start);
 294
 295 /* smatch_type.c */
 296 struct symbol *get_real_base_type(struct symbol *sym);
 297 int type_bits(struct symbol *type);
 298 int type_positive_bits(struct symbol *type);
 299 struct symbol *get_pointer_type(struct expression *expr);
 300 struct symbol *get_type(struct expression *expr);
 301 int type_unsigned(struct symbol *base_type);
 302 int type_signed(struct symbol *base_type);
 303 int expr_unsigned(struct expression *expr);
 304 int returns_unsigned(struct symbol *base_type);
 305 int is_pointer(struct expression *expr);
 306 int returns_pointer(struct symbol *base_type);
 307 sval_t sval_type_max(struct symbol *base_type);
 308 sval_t sval_type_min(struct symbol *base_type);
 309 int nr_bits(struct expression *expr);
 310 int is_void_pointer(struct expression *expr);
 311 int is_char_pointer(struct expression *expr);
 312 int is_static(struct expression *expr);
 313 int types_equiv(struct symbol *one, struct symbol *two);
 314 int fn_static(void);
 315 const char *global_static();
 316 struct symbol *cur_func_return_type(void);
 317 struct symbol *get_arg_type(struct expression *fn, int arg);
 318 struct symbol *get_member_type_from_key(struct expression *expr, char *key);
 319
 320 /* smatch_ignore.c */
 321 void add_ignore(int owner, const char *name, struct symbol *sym);
 322 int is_ignored(int owner, const char *name, struct symbol *sym);
 323
 324 /* smatch_var_sym */
 325 struct var_sym *alloc_var_sym(const char *var, struct symbol *sym);
 326 struct var_sym_list *expr_to_vsl(struct expression *expr);
 327 void add_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym);
 328 void add_var_sym_expr(struct var_sym_list **list, struct expression *expr);
 329 void del_var_sym(struct var_sym_list **list, const char *var, struct symbol *sym);
 330 int in_var_sym_list(struct var_sym_list *list, const char *var, struct symbol *sym);
 331 struct var_sym_list *clone_var_sym_list(struct var_sym_list *from_vsl);
 332 void merge_var_sym_list(struct var_sym_list **dest, struct var_sym_list *src);
 333 struct var_sym_list *combine_var_sym_lists(struct var_sym_list *one, struct var_sym_list *two);
 334 void free_var_sym_list(struct var_sym_list **list);
 335 void free_var_syms_and_list(struct var_sym_list **list);
 336
 337 /* smatch_tracker */
 338 struct tracker *alloc_tracker(int owner, const char *name, struct symbol *sym);
 339 void add_tracker(struct tracker_list **list, int owner, const char *name,
 340                 struct symbol *sym);
 341 void add_tracker_expr(struct tracker_list **list, int owner, struct expression *expr);
 342 void del_tracker(struct tracker_list **list, int owner, const char *name,
 343                 struct symbol *sym);
 344 int in_tracker_list(struct tracker_list *list, int owner, const char *name,
 345                 struct symbol *sym);
 346 void free_tracker_list(struct tracker_list **list);
 347 void free_trackers_and_list(struct tracker_list **list);
 348
 349 /* smatch_conditions */
 350 int in_condition(void);
 351
 352 /* smatch_flow.c */
 353
 354 extern int __in_fake_assign;
 355 void smatch (int argc, char **argv);
 356 int inside_loop(void);
 357 struct expression *get_switch_expr(void);
 358 int in_expression_statement(void);
 359 void __process_post_op_stack(void);
 360 void __split_expr(struct expression *expr);
 361 void __split_stmt(struct statement *stmt);
 362 extern int __in_function_def;
 363 extern int option_assume_loops;
 364 extern int option_known_conditions;
 365 extern int option_two_passes;
 366 extern int option_no_db;
 367 extern int option_file_output;
 368 extern int option_time;
 369 extern struct expression_list *big_expression_stack;
 370 extern struct statement_list *big_statement_stack;
 371 int inlinable(struct expression *expr);
 372 extern int __inline_call;
 373 extern struct expression *__inline_fn;
 374 extern int __in_pre_condition;
 375 extern int __bail_on_rest_of_function;
 376
 377 /* smatch_struct_assignment.c */
 378 enum {
 379         COPY_NORMAL,
 380         COPY_MEMCPY,
 381         COPY_MEMSET,
 382 };
 383 void __struct_members_copy(int mode, struct expression *left, struct expression *right);
 384 void __fake_struct_member_assignments(struct expression *expr);
 385
 386 /* smatch_project.c */
 387 int is_no_inline_function(const char *function);
 388
 389 /* smatch_conditions */
 390 void __split_whole_condition(struct expression *expr);
 391 void __handle_logic(struct expression *expr);
 392 int is_condition(struct expression *expr);
 393 int __handle_condition_assigns(struct expression *expr);
 394 int __handle_select_assigns(struct expression *expr);
 395 int __handle_expr_statement_assigns(struct expression *expr);
 396
 397 /* smatch_implied.c */
 398 extern int option_debug_implied;
 399 extern int option_debug_related;
 400 extern int option_no_implied;
 401 struct range_list_stack;
 402 struct state_list *__implied_case_slist(struct expression *switch_expr,
 403                                         struct expression *case_expr,
 404                                         struct range_list_stack **remaining_cases,
 405                                         struct state_list **raw_slist);
 406 struct range_list *__get_implied_values(struct expression *switch_expr);
 407 void overwrite_states_using_pool(struct sm_state *sm);
 408
 409 /* smatch_extras.c */
 410 #define SMATCH_EXTRA 1 /* this is my_id from smatch extra set in smatch.c */
 411
 412 struct data_range {
 413         sval_t min;
 414         sval_t max;
 415 };
 416
 417 static const long long valid_ptr_max = LONG_MAX;
 418 static const long long valid_ptr_min = 4096;
 419 static const sval_t valid_ptr_max_sval = {
 420         .type = &ptr_ctype,
 421         {.value = LONG_MAX},
 422 };
 423 static const sval_t valid_ptr_min_sval = {
 424         .type = &ptr_ctype,
 425         {.value = 4096},
 426 };
 427
 428 /* smatch_absolute.c */
 429 int get_absolute_min_helper(struct expression *expr, sval_t *sval);
 430 int get_absolute_max_helper(struct expression *expr, sval_t *sval);
 431
 432 /* smatch_local_values.c */
 433 int get_local_rl(struct expression *expr, struct range_list **rl);
 434 int get_local_max_helper(struct expression *expr, sval_t *sval);
 435 int get_local_min_helper(struct expression *expr, sval_t *sval);
 436
 437 /* smatch_type_value.c */
 438 int get_db_type_rl(struct expression *expr, struct range_list **rl);
 439
 440 /* smatch_states.c */
 441 void __push_fake_cur_slist();
 442 struct state_list *__pop_fake_cur_slist();
 443 void __free_fake_cur_slist();
 444 void __set_fake_cur_slist_fast(struct state_list *slist);
 445 void __pop_fake_cur_slist_fast(void);
 446 void __merge_slist_into_cur(struct state_list *slist);
 447
 448 int unreachable(void);
 449 void __set_sm(struct sm_state *sm);
 450 struct state_list *__get_cur_slist(void);
 451 void __set_true_false_sm(struct sm_state *true_state,
 452                         struct sm_state *false_state);
 453 void nullify_path(void);
 454 void __match_nullify_path_hook(const char *fn, struct expression *expr,
 455                                void *unused);
 456 void __unnullify_path(void);
 457 int __path_is_null(void);
 458 void save_all_states(void);
 459 void nullify_all_states(void);
 460 void restore_all_states(void);
 461 void clear_all_states(void);
 462
 463 struct sm_state *get_sm_state(int owner, const char *name,
 464                                 struct symbol *sym);
 465 struct sm_state *get_sm_state_expr(int owner, struct expression *expr);
 466 void __push_true_states(void);
 467 void __use_false_states(void);
 468 void __discard_false_states(void);
 469 void __merge_false_states(void);
 470 void __merge_true_states(void);
 471
 472 void __negate_cond_stacks(void);
 473 void __use_pre_cond_states(void);
 474 void __use_cond_true_states(void);
 475 void __use_cond_false_states(void);
 476 void __push_cond_stacks(void);
 477 struct state_list *__copy_cond_true_states(void);
 478 struct state_list *__copy_cond_false_states(void);
 479 struct state_list *__pop_cond_true_stack(void);
 480 struct state_list *__pop_cond_false_stack(void);
 481 void __and_cond_states(void);
 482 void __or_cond_states(void);
 483 void __save_pre_cond_states(void);
 484 void __discard_pre_cond_states(void);
 485 void __use_cond_states(void);
 486 extern struct state_list *__last_base_slist;
 487
 488 void __warn_on_silly_pre_loops(void);
 489
 490 void __push_continues(void);
 491 void __discard_continues(void);
 492 void __process_continues(void);
 493 void __merge_continues(void);
 494
 495 void __push_breaks(void);
 496 void __process_breaks(void);
 497 int __has_breaks(void);
 498 void __merge_breaks(void);
 499 void __use_breaks(void);
 500
 501 void __save_switch_states(struct expression *switch_expr);
 502 void __discard_switches(void);
 503 void __merge_switches(struct expression *switch_expr, struct expression *case_expr);
 504 void __push_default(void);
 505 void __set_default(void);
 506 int __pop_default(void);
 507
 508 void __push_conditions(void);
 509 void __discard_conditions(void);
 510
 511 void __save_gotos(const char *name);
 512 void __merge_gotos(const char *name);
 513
 514 void __print_cur_slist(void);
 515
 516 /* smatch_hooks.c */
 517 void __pass_to_client(void *data, enum hook_type type);
 518 void __pass_to_client_no_data(enum hook_type type);
 519 void __pass_case_to_client(struct expression *switch_expr,
 520                            struct expression *case_expr);
 521 int __has_merge_function(int client_id);
 522 struct smatch_state *__client_merge_function(int owner,
 523                                              struct smatch_state *s1,
 524                                              struct smatch_state *s2);
 525 struct smatch_state *__client_unmatched_state_function(struct sm_state *sm);
 526 void __push_scope_hooks(void);
 527 void __call_scope_hooks(void);
 528
 529 /* smatch_function_hooks.c */
 530 void create_function_hook_hash(void);
 531 void __match_initializer_call(struct symbol *sym);
 532
 533 /* smatch_db.c */
 534 enum info_type {
 535         INTERNAL        = 0,
 536         /*
 537          * Changing these numbers is a pain.  Don't do it.  If you ever use a
 538          * number it can't be re-used right away so there may be gaps.
 539          * We select these in order by type so if the order matters, then give
 540          * it a number below 100-999,9000-9999 ranges. */
 541
 542         PARAM_CLEARED   = 101,
 543         FILTER_VALUE    = 102,
 544
 545         PARAM_VALUE     = 1001,
 546         BUF_SIZE        = 1002,
 547         USER_DATA       = 1003,
 548         CAPPED_DATA     = 1004,
 549         RETURN_VALUE    = 1005,
 550         DEREFERENCE     = 1006,
 551         RANGE_CAP       = 1007,
 552         LOCK_HELD       = 1008,
 553         LOCK_RELEASED   = 1009,
 554         ABSOLUTE_LIMITS = 1010,
 555         LIMITED_VALUE   = 1011,
 556         ADDED_VALUE     = 1012,
 557         PARAM_FREED     = 1013,
 558         DATA_SOURCE     = 1014,
 559         FUZZY_MAX       = 1015,
 560         STR_LEN         = 1016,
 561 };
 562
 563 void debug_sql(const char *sql);
 564 void select_caller_info_hook(void (*callback)(const char *name, struct symbol *sym, char *key, char *value), int type);
 565 void add_member_info_callback(int owner, void (*callback)(struct expression *call, int param, char *printed_name, struct smatch_state *state));
 566 void add_split_return_callback(void (*fn)(int return_id, char *return_ranges, struct expression *returned_expr));
 567 void add_returned_member_callback(int owner, void (*callback)(int return_id, char *return_ranges, char *printed_name, struct smatch_state *state));
 568 void select_call_implies_hook(int type, void (*callback)(struct expression *arg, char *value));
 569 struct range_list *db_return_vals(struct expression *expr);
 570 char *return_state_to_var_sym(struct expression *expr, int param, char *key, struct symbol **sym);
 571 char *get_variable_from_key(struct expression *arg, char *key, struct symbol **sym);
 572 const char *get_param_name(struct sm_state *sm);
 573
 574 #define run_sql(call_back, sql...)    \
 575 do {                                  \
 576         char sql_txt[1024];           \
 577         if (option_no_db)             \
 578                 break;                \
 579         snprintf(sql_txt, 1024, sql); \
 580         debug_sql(sql_txt);           \
 581         sql_exec(call_back, sql_txt); \
 582 } while (0)
 583
 584 /* like run_sql() but for the in-memory database */
 585 #define mem_sql(call_back, sql...)                                              \
 586 do {                                                                            \
 587         char sql_txt[1024];                                                     \
 588                                                                                 \
 589         snprintf(sql_txt, sizeof(sql_txt), sql);                                \
 590         sm_debug("in-mem: %s\n", sql_txt);                                      \
 591         sql_mem_exec(call_back, sql_txt);                                       \
 592 } while (0)
 593
 594 void sql_insert_return_states(int return_id, const char *return_ranges,
 595                 int type, int param, const char *key, const char *value);
 596 void sql_insert_caller_info(struct expression *call, int type, int param,
 597                 const char *key, const char *value);
 598 void sql_insert_function_ptr(const char *fn, const char *struct_name);
 599 void sql_insert_return_values(const char *return_values);
 600 void sql_insert_call_implies(int type, int param, int value);
 601 void sql_insert_function_type_size(const char *member, const char *ranges);
 602 void sql_insert_local_values(const char *name, const char *value);
 603 void sql_insert_function_type_value(const char *type, const char *value);
 604
 605 void sql_select_return_states(const char *cols, struct expression *call,
 606         int (*callback)(void*, int, char**, char**));
 607 void sql_select_caller_info(const char *cols, struct symbol *sym,
 608         int (*callback)(void*, int, char**, char**));
 609 void sql_select_call_implies(const char *cols, struct expression *call,
 610         int (*callback)(void*, int, char**, char**));
 611
 612 void sql_exec(int (*callback)(void*, int, char**, char**), const char *sql);
 613 void sql_mem_exec(int (*callback)(void*, int, char**, char**), const char *sql);
 614
 615 void open_smatch_db(void);
 616
 617 /* smatch_files.c */
 618 int open_data_file(const char *filename);
 619 struct token *get_tokens_file(const char *filename);
 620
 621 /* smatch.c */
 622 extern char *option_debug_check;
 623 extern char *option_project_str;
 624 extern char *data_dir;
 625 extern int option_no_data;
 626 extern int option_spammy;
 627 extern int option_full_path;
 628 extern int option_param_mapper;
 629 extern int option_call_tree;
 630 extern int num_checks;
 631
 632 enum project_type {
 633         PROJ_NONE,
 634         PROJ_KERNEL,
 635         PROJ_WINE,
 636 };
 637 extern enum project_type option_project;
 638 const char *check_name(unsigned short id);
 639
 640
 641 /* smatch_buf_size.c */
 642 int get_array_size(struct expression *expr);
 643 int get_array_size_bytes(struct expression *expr);
 644 int get_array_size_bytes_min(struct expression *expr);
 645 int get_array_size_bytes_max(struct expression *expr);
 646 struct range_list *get_array_size_bytes_rl(struct expression *expr);
 647 int get_real_array_size(struct expression *expr);
 648 /* smatch_strlen.c */
 649 int get_implied_strlen(struct expression *expr, struct range_list **rl);
 650 int get_size_from_strlen(struct expression *expr);
 651
 652 /* smatch_capped.c */
 653 int is_capped(struct expression *expr);
 654 int is_capped_var_sym(const char *name, struct symbol *sym);
 655
 656 /* check_user_data.c */
 657 int is_user_macro(struct expression *expr);
 658 int is_user_data(struct expression *expr);
 659 int is_capped_user_data(struct expression *expr);
 660
 661 /* check_locking.c */
 662 void print_held_locks();
 663
 664 /* check_assigned_expr.c */
 665 struct expression *get_assigned_expr(struct expression *expr);
 666
 667 /* smatch_comparison.c */
 668 int get_comparison(struct expression *left, struct expression *right);
 669 void __add_comparison_info(struct expression *expr, struct expression *call, const char *range);
 670 char *expr_equal_to_param(struct expression *expr);
 671 char *expr_lte_to_param(struct expression *expr);
 672
 673 /* smatch_sval.c */
 674 sval_t *sval_alloc(sval_t sval);
 675 sval_t *sval_alloc_permanent(sval_t sval);
 676 sval_t sval_blank(struct expression *expr);
 677 sval_t sval_type_val(struct symbol *type, long long val);
 678 sval_t sval_from_val(struct expression *expr, long long val);
 679 int sval_unsigned(sval_t sval);
 680 int sval_signed(sval_t sval);
 681 int sval_bits(sval_t sval);
 682 int sval_positive_bits(sval_t sval);
 683 int sval_bits_used(sval_t sval);
 684 int sval_is_negative(sval_t sval);
 685 int sval_is_positive(sval_t sval);
 686 int sval_is_min(sval_t sval);
 687 int sval_is_max(sval_t sval);
 688 int sval_is_a_min(sval_t sval);
 689 int sval_is_a_max(sval_t sval);
 690 int sval_is_negative_min(sval_t sval);
 691 int sval_cmp(sval_t one, sval_t two);
 692 int sval_cmp_t(struct symbol *type, sval_t one, sval_t two);
 693 int sval_cmp_val(sval_t one, long long val);
 694 sval_t sval_min(sval_t one, sval_t two);
 695 sval_t sval_max(sval_t one, sval_t two);
 696 int sval_too_low(struct symbol *type, sval_t sval);
 697 int sval_too_high(struct symbol *type, sval_t sval);
 698 int sval_fits(struct symbol *type, sval_t sval);
 699 sval_t sval_cast(struct symbol *type, sval_t sval);
 700 sval_t sval_preop(sval_t sval, int op);
 701 sval_t sval_binop(sval_t left, int op, sval_t right);
 702 int sval_binop_overflows(sval_t left, int op, sval_t right);
 703 const char *sval_to_str(sval_t sval);
 704 const char *sval_to_numstr(sval_t sval);
 705 sval_t ll_to_sval(long long val);
 706
 707 /* smatch_string_list.c */
 708 int list_has_string(struct string_list *str_list, char *str);
 709 void insert_string(struct string_list **str_list, char *str);
 710 struct string_list *clone_str_list(struct string_list *orig);
 711 struct string_list *combine_string_lists(struct string_list *one, struct string_list *two);
 712
 713 /* smatch_clear_buffer.c */
 714 int is_uninitialized(struct expression *expr);
 715 int has_uninitialized_members(struct expression *expr);
 716
 717 /* smatch_start_states.c */
 718 struct state_list *get_start_states(void);
 719
 720 /* smatch_recurse.c */
 721 int has_symbol(struct expression *expr, struct symbol *sym);
 722 int has_variable(struct expression *expr, struct expression *var);
 723 int has_inc_dec(struct expression *expr);
 724
 725 /* check_string_len.c */
 726 int get_formatted_string_size(struct expression *call, int arg);
 727
 728 #endif      /* !SMATCH_H_ */