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12724 update smatch to 0.6.1-rc1-il-5
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--- old/usr/src/tools/smatch/src/smatch.c
+++ new/usr/src/tools/smatch/src/smatch.c
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
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 16 *
17 17 * Copyright 2019 Joyent, Inc.
18 18 */
19 19
20 20 #include <stdio.h>
21 21 #include <unistd.h>
22 22 #include <libgen.h>
23 23 #include "smatch.h"
24 24 #include "smatch_slist.h"
25 25 #include "check_list.h"
26 26
27 27 char *option_debug_check = (char *)"";
28 28 char *option_project_str = (char *)"smatch_generic";
29 29 static char *option_db_file = (char *)"smatch_db.sqlite";
30 30 enum project_type option_project = PROJ_NONE;
31 31 char *bin_dir;
32 32 char *data_dir;
33 33 int option_no_data = 0;
34 34 int option_spammy = 0;
35 35 int option_info = 0;
36 36 int option_full_path = 0;
37 37 int option_call_tree = 0;
38 38 int option_no_db = 0;
39 39 int option_enable = 0;
40 40 int option_disable = 0;
41 41 int option_file_output;
42 42 int option_time;
43 43 int option_mem;
44 44 char *option_datadir_str;
45 45 int option_fatal_checks;
46 46 int option_succeed;
47 47 int option_timeout = 60;
48 48
49 49 FILE *sm_outfd;
50 50 FILE *sql_outfd;
51 51 FILE *caller_info_fd;
52 52
53 53 int sm_nr_errors;
54 54 int sm_nr_checks;
55 55
56 56 bool __silence_warnings_for_stmt;
57 57
58 58 const char *progname;
59 59
60 60 typedef void (*reg_func) (int id);
61 61 #define CK(_x) {.name = #_x, .func = &_x, .enabled = 0},
62 62 static struct reg_func_info {
63 63 const char *name;
64 64 reg_func func;
65 65 int enabled;
66 66 } reg_funcs[] = {
67 67 {NULL, NULL},
68 68 #include "check_list.h"
69 69 };
70 70 #undef CK
71 71 int num_checks = ARRAY_SIZE(reg_funcs) - 1;
72 72
73 73 const char *check_name(unsigned short id)
74 74 {
75 75 if (id >= ARRAY_SIZE(reg_funcs))
76 76 return "internal";
77 77
78 78 return reg_funcs[id].name;
79 79 }
80 80
81 81 int id_from_name(const char *name)
82 82 {
83 83 int i;
84 84
85 85 for (i = 1; i < ARRAY_SIZE(reg_funcs); i++) {
86 86 if (!strcmp(name, reg_funcs[i].name))
87 87 return i;
88 88 }
89 89 return 0;
90 90 }
91 91
92 92 static void show_checks(void)
93 93 {
94 94 int i;
95 95
96 96 for (i = 1; i < ARRAY_SIZE(reg_funcs); i++) {
97 97 if (!strncmp(reg_funcs[i].name, "check_", 6))
98 98 printf("%3d. %s\n", i, reg_funcs[i].name);
99 99 }
100 100 exit(0);
101 101 }
102 102
103 103 static void enable_disable_checks(char *s, bool enable)
104 104 {
105 105 char buf[128];
106 106 char *next;
107 107 int i;
108 108
109 109 do {
110 110 next = strchr(s, ',');
111 111 if (next) {
112 112 *next = '\0';
113 113 next++;
114 114 }
115 115 if (*s == '\0')
116 116 return;
117 117 if (strncmp(s, "check_", 6) == 0)
118 118 snprintf(buf, sizeof(buf), "%s", s);
119 119 else
120 120 snprintf(buf, sizeof(buf), "check_%s", s);
121 121
122 122
123 123 for (i = 1; i < ARRAY_SIZE(reg_funcs); i++) {
124 124 if (strcmp(reg_funcs[i].name, buf) == 0) {
125 125 reg_funcs[i].enabled = (enable == true) ? 1 : -1;
126 126 break;
127 127 }
128 128 }
129 129
130 130 if (i == ARRAY_SIZE(reg_funcs))
131 131 sm_fatal("'%s' not found", s);
132 132
133 133 } while ((s = next));
134 134 }
135 135
136 136 static void help(void)
137 137 {
138 138 printf("Usage: smatch [smatch arguments][sparse arguments] file.c\n");
139 139 printf("--project=<name> or -p=<name>: project specific tests\n");
140 140 printf("--succeed: don't exit with an error\n");
141 141 printf("--spammy: print superfluous crap.\n");
142 142 printf("--info: print info used to fill smatch_data/.\n");
143 143 printf("--debug: print lots of debug output.\n");
144 144 printf("--no-data: do not use the /smatch_data/ directory.\n");
145 145 printf("--data=<dir>: overwrite path to default smatch data directory.\n");
146 146 printf("--full-path: print the full pathname.\n");
147 147 printf("--debug-implied: print debug output about implications.\n");
148 148 printf("--assume-loops: assume loops always go through at least once.\n");
149 149 printf("--two-passes: use a two pass system for each function.\n");
150 150 printf("--file-output: instead of printing stdout, print to \"file.c.smatch_out\".\n");
151 151 printf("--fatal-checks: check output is treated as an error.\n");
152 152 printf("--help: print this helpful message.\n");
153 153 exit(1);
154 154 }
155 155
156 156 static int match_option(const char *arg, const char *option)
157 157 {
158 158 char *str;
159 159 char *tmp;
160 160 int ret = 0;
161 161
162 162 str = malloc(strlen(option) + 3);
163 163 snprintf(str, strlen(option) + 3, "--%s", option);
164 164 tmp = str;
165 165 while (*tmp) {
166 166 if (*tmp == '_')
167 167 *tmp = '-';
168 168 tmp++;
169 169 }
170 170 if (!strcmp(arg, str))
171 171 ret = 1;
172 172 free(str);
173 173 return ret;
174 174 }
175 175
176 176 #define OPTION(_x) do { \
177 177 if (match_option((*argvp)[i], #_x)) { \
178 178 option_##_x = 1; \
179 179 } \
180 180 } while (0)
181 181
182 182 void parse_args(int *argcp, char ***argvp)
183 183 {
184 184 int i;
185 185
186 186 for (i = 1 ; i < *argcp; i++) {
187 187 if (!strcmp((*argvp)[i], "--help"))
188 188 help();
189 189
190 190 if (!strcmp((*argvp)[i], "--show-checks"))
191 191 show_checks();
192 192
193 193 if (!strncmp((*argvp)[i], "--project=", 10))
194 194 option_project_str = (*argvp)[i] + 10;
195 195
196 196 if (!strncmp((*argvp)[i], "-p=", 3))
197 197 option_project_str = (*argvp)[i] + 3;
198 198
199 199 if (!strncmp((*argvp)[i], "--db-file=", 10))
200 200 option_db_file = (*argvp)[i] + 10;
201 201
202 202 if (!strncmp((*argvp)[i], "--data=", 7))
203 203 option_datadir_str = (*argvp)[i] + 7;
204 204
205 205 if (!strncmp((*argvp)[i], "--debug=", 8))
206 206 option_debug_check = (*argvp)[i] + 8;
207 207
208 208 if (strncmp((*argvp)[i], "--trace=", 8) == 0)
209 209 trace_variable = (*argvp)[i] + 8;
210 210
211 211 if (strncmp((*argvp)[i], "--enable=", 9) == 0) {
212 212 enable_disable_checks((*argvp)[i] + 9, 1);
213 213 option_enable = 1;
214 214 }
215 215
216 216 if (strncmp((*argvp)[i], "--disable=", 10) == 0) {
217 217 enable_disable_checks((*argvp)[i] + 10, 0);
218 218 option_enable = 1;
219 219 option_disable = 1;
220 220 }
221 221
222 222 if (!strncmp((*argvp)[i], "--timeout=", 10)) {
223 223 if (sscanf((*argvp)[i] + 10, "%d",
224 224 &option_timeout) != 1)
225 225 sm_fatal("invalid option %s", (*argvp)[i]);
226 226 }
227 227
228 228 OPTION(fatal_checks);
229 229 OPTION(spammy);
230 230 OPTION(info);
231 231 OPTION(debug);
232 232 OPTION(assume_loops);
233 233 OPTION(no_data);
234 234 OPTION(two_passes);
235 235 OPTION(full_path);
236 236 OPTION(call_tree);
237 237 OPTION(file_output);
238 238 OPTION(time);
239 239 OPTION(mem);
240 240 OPTION(no_db);
241 241 OPTION(succeed);
242 242 }
243 243
244 244 if (strcmp(option_project_str, "smatch_generic") != 0)
245 245 option_project = PROJ_UNKNOWN;
246 246
247 247 if (strcmp(option_project_str, "kernel") == 0)
248 248 option_project = PROJ_KERNEL;
249 249 else if (strcmp(option_project_str, "wine") == 0)
250 250 option_project = PROJ_WINE;
251 251 else if (strcmp(option_project_str, "illumos_kernel") == 0)
252 252 option_project = PROJ_ILLUMOS_KERNEL;
253 253 else if (strcmp(option_project_str, "illumos_user") == 0)
254 254 option_project = PROJ_ILLUMOS_USER;
255 255 }
256 256
257 257 static char *read_bin_filename(void)
258 258 {
259 259 char filename[PATH_MAX] = {};
260 260 char proc[PATH_MAX];
261 261
262 262 pid_t pid = getpid();
263 263 sprintf(proc, "/proc/%d/exe", pid);
264 264 if (readlink(proc, filename, PATH_MAX) < 0)
265 265 return NULL;
266 266 return alloc_string(filename);
267 267 }
268 268
269 269 static char *get_bin_dir(char *arg0)
270 270 {
271 271 char *orig;
272 272
273 273 orig = read_bin_filename();
274 274 if (!orig)
275 275 orig = alloc_string(arg0);
276 276 return dirname(orig);
277 277 }
278 278
279 279 static char *get_data_dir(char *arg0)
280 280 {
281 281 char buf[256];
282 282 char *dir;
283 283
284 284 if (option_no_data)
285 285 return NULL;
286 286
287 287 if (option_datadir_str) {
288 288 if (access(option_datadir_str, R_OK))
289 289 sm_warning("%s is not accessible -- ignored.",
290 290 option_datadir_str);
291 291 else
292 292 return alloc_string(option_datadir_str);
293 293 }
294 294
295 295 strncpy(buf, "smatch_data/", sizeof(buf));
296 296 dir = alloc_string(buf);
297 297 if (!access(dir, R_OK))
298 298 return dir;
299 299
300 300 strncpy(buf, bin_dir, 254);
301 301
302 302 buf[255] = '\0';
303 303 strncat(buf, "/smatch_data/", 254 - strlen(buf));
304 304 dir = alloc_string(buf);
305 305 if (!access(dir, R_OK))
306 306 return dir;
307 307 free_string(dir);
308 308 snprintf(buf, 254, "%s/smatch_data/", SMATCHDATADIR);
309 309 dir = alloc_string(buf);
310 310 if (!access(dir, R_OK))
311 311 return dir;
312 312
313 313 sm_warning("%s is not accessible.", dir);
314 314 sm_warning("Use --no-data or --data to suppress this message.");
315 315 return NULL;
316 316 }
317 317
318 318 int main(int argc, char **argv)
319 319 {
320 320 struct string_list *filelist = NULL;
321 321 int i;
322 322 reg_func func;
323 323
324 324 sm_outfd = stdout;
325 325 sql_outfd = stdout;
326 326 caller_info_fd = stdout;
327 327
328 328 progname = argv[0];
329 329
330 330 parse_args(&argc, &argv);
331 331
332 332 if (argc < 2)
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333 333 help();
334 334
335 335 /* this gets set back to zero when we parse the first function */
336 336 final_pass = 1;
337 337
338 338 bin_dir = get_bin_dir(argv[0]);
339 339 data_dir = get_data_dir(argv[0]);
340 340
341 341 allocate_hook_memory();
342 342 allocate_dynamic_states_array(num_checks);
343 + allocate_tracker_array(num_checks);
343 344 create_function_hook_hash();
344 345 open_smatch_db(option_db_file);
345 346 sparse_initialize(argc, argv, &filelist);
346 347 alloc_valid_ptr_rl();
347 348
348 349 for (i = 1; i < ARRAY_SIZE(reg_funcs); i++) {
349 350 func = reg_funcs[i].func;
350 351 /* The script IDs start at 1.
351 352 0 is used for internal stuff. */
352 353 if (!option_enable || reg_funcs[i].enabled == 1 ||
353 354 (option_disable && reg_funcs[i].enabled != -1) ||
354 355 strncmp(reg_funcs[i].name, "register_", 9) == 0)
355 356 func(i);
356 357 }
357 358
358 359 smatch(filelist);
359 360 free_string(data_dir);
360 361
361 362 if (option_succeed)
362 363 return 0;
363 364 if (sm_nr_errors > 0)
364 365 return 1;
365 366 if (sm_nr_checks > 0 && option_fatal_checks)
366 367 return 1;
367 368 return 0;
368 369 }
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