2 * Copyright (C) 2006 Dan Carpenter.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
22 #include "check_list.h"
24 char *option_debug_check
= (char *)"";
25 char *option_project_str
= (char *)"smatch_generic";
26 static char *option_db_file
= (char *)"smatch_db.sqlite";
27 enum project_type option_project
= PROJ_NONE
;
30 int option_no_data
= 0;
31 int option_spammy
= 0;
33 int option_full_path
= 0;
34 int option_param_mapper
= 0;
35 int option_call_tree
= 0;
37 int option_enable
= 0;
38 int option_disable
= 0;
39 int option_debug_related
;
40 int option_file_output
;
43 char *option_datadir_str
;
48 bool __silence_warnings_for_stmt
;
50 typedef void (*reg_func
) (int id
);
51 #define CK(_x) {.name = #_x, .func = &_x, .enabled = 0},
52 static struct reg_func_info
{
58 #include "check_list.h"
61 int num_checks
= ARRAY_SIZE(reg_funcs
) - 1;
63 const char *check_name(unsigned short id
)
65 if (id
>= ARRAY_SIZE(reg_funcs
))
68 return reg_funcs
[id
].name
;
71 int id_from_name(const char *name
)
75 for (i
= 1; i
< ARRAY_SIZE(reg_funcs
); i
++) {
76 if (!strcmp(name
, reg_funcs
[i
].name
))
82 static void show_checks(void)
86 for (i
= 1; i
< ARRAY_SIZE(reg_funcs
); i
++) {
87 if (!strncmp(reg_funcs
[i
].name
, "check_", 6))
88 printf("%3d. %s\n", i
, reg_funcs
[i
].name
);
93 static void enable_disable_checks(char *s
, bool enable
)
100 next
= strchr(s
, ',');
107 if (strncmp(s
, "check_", 6) == 0)
108 snprintf(buf
, sizeof(buf
), "%s", s
);
110 snprintf(buf
, sizeof(buf
), "check_%s", s
);
113 for (i
= 1; i
< ARRAY_SIZE(reg_funcs
); i
++) {
114 if (strcmp(reg_funcs
[i
].name
, buf
) == 0) {
115 reg_funcs
[i
].enabled
= (enable
== true) ? 1 : -1;
120 if (i
== ARRAY_SIZE(reg_funcs
)) {
121 printf("error: '%s' not found", s
);
124 } while ((s
= next
));
127 static void help(void)
129 printf("Usage: smatch [smatch arguments][sparse arguments] file.c\n");
130 printf("--project=<name> or -p=<name>: project specific tests\n");
131 printf("--spammy: print superfluous crap.\n");
132 printf("--info: print info used to fill smatch_data/.\n");
133 printf("--debug: print lots of debug output.\n");
134 printf("--param-mapper: enable param_mapper output.\n");
135 printf("--no-data: do not use the /smatch_data/ directory.\n");
136 printf("--data=<dir>: overwrite path to default smatch data directory.\n");
137 printf("--full-path: print the full pathname.\n");
138 printf("--debug-implied: print debug output about implications.\n");
139 printf("--assume-loops: assume loops always go through at least once.\n");
140 printf("--two-passes: use a two pass system for each function.\n");
141 printf("--file-output: instead of printing stdout, print to \"file.c.smatch_out\".\n");
142 printf("--help: print this helpful message.\n");
146 static int match_option(const char *arg
, const char *option
)
152 str
= malloc(strlen(option
) + 3);
153 snprintf(str
, strlen(option
) + 3, "--%s", option
);
160 if (!strcmp(arg
, str
))
166 #define OPTION(_x) do { \
167 if (!found && match_option((*argvp)[1], #_x)) { \
170 (*argvp)[1] = (*argvp)[0]; \
174 void parse_args(int *argcp
, char ***argvp
)
176 while (*argcp
>= 2) {
178 if (!strcmp((*argvp
)[1], "--help"))
181 if (!strcmp((*argvp
)[1], "--show-checks"))
184 if (!found
&& !strncmp((*argvp
)[1], "--project=", 10)) {
185 option_project_str
= (*argvp
)[1] + 10;
186 (*argvp
)[1] = (*argvp
)[0];
189 if (!found
&& !strncmp((*argvp
)[1], "-p=", 3)) {
190 option_project_str
= (*argvp
)[1] + 3;
191 (*argvp
)[1] = (*argvp
)[0];
194 if (!found
&& !strncmp((*argvp
)[1], "--db-file=", 10)) {
195 option_db_file
= (*argvp
)[1] + 10;
196 (*argvp
)[1] = (*argvp
)[0];
199 if (!found
&& !strncmp((*argvp
)[1], "--data=", 7)) {
200 option_datadir_str
= (*argvp
)[1] + 7;
201 (*argvp
)[1] = (*argvp
)[0];
204 if (!found
&& !strncmp((*argvp
)[1], "--debug=", 8)) {
205 option_debug_check
= (*argvp
)[1] + 8;
206 (*argvp
)[1] = (*argvp
)[0];
209 if (!found
&& strncmp((*argvp
)[1], "--trace=", 8) == 0) {
210 trace_variable
= (*argvp
)[1] + 8;
211 (*argvp
)[1] = (*argvp
)[0];
214 if (!found
&& strncmp((*argvp
)[1], "--enable=", 9) == 0) {
215 enable_disable_checks((*argvp
)[1] + 9, 1);
217 (*argvp
)[1] = (*argvp
)[0];
220 if (!found
&& strncmp((*argvp
)[1], "--disable=", 10) == 0) {
221 enable_disable_checks((*argvp
)[1] + 10, 0);
224 (*argvp
)[1] = (*argvp
)[0];
231 OPTION(debug_implied
);
232 OPTION(debug_related
);
233 OPTION(assume_loops
);
237 OPTION(param_mapper
);
249 if (strcmp(option_project_str
, "smatch_generic") != 0)
250 option_project
= PROJ_UNKNOWN
;
251 if (strcmp(option_project_str
, "kernel") == 0)
252 option_project
= PROJ_KERNEL
;
253 if (strcmp(option_project_str
, "wine") == 0)
254 option_project
= PROJ_WINE
;
257 static char *read_bin_filename(void)
259 char filename
[PATH_MAX
] = {};
262 pid_t pid
= getpid();
263 sprintf(proc
, "/proc/%d/exe", pid
);
264 if (readlink(proc
, filename
, PATH_MAX
) < 0)
266 return alloc_string(filename
);
269 static char *get_bin_dir(char *arg0
)
273 orig
= read_bin_filename();
275 orig
= alloc_string(arg0
);
276 return dirname(orig
);
279 static char *get_data_dir(char *arg0
)
287 if (option_datadir_str
) {
288 if (access(option_datadir_str
, R_OK
))
289 printf("Warning: %s is not accessible -- ignore.\n",
292 return alloc_string(option_datadir_str
);
295 strncpy(buf
, "smatch_data/", sizeof(buf
));
296 dir
= alloc_string(buf
);
297 if (!access(dir
, R_OK
))
300 strncpy(buf
, bin_dir
, 254);
303 strncat(buf
, "/smatch_data/", 254 - strlen(buf
));
304 dir
= alloc_string(buf
);
305 if (!access(dir
, R_OK
))
308 snprintf(buf
, 254, "%s/smatch_data/", SMATCHDATADIR
);
309 dir
= alloc_string(buf
);
310 if (!access(dir
, R_OK
))
313 printf("Warning: %s is not accessible.\n", dir
);
314 printf("Use --no-data or --data to suppress this message.\n");
318 int main(int argc
, char **argv
)
325 caller_info_fd
= stdout
;
326 parse_args(&argc
, &argv
);
328 /* this gets set back to zero when we parse the first function */
331 bin_dir
= get_bin_dir(argv
[0]);
332 data_dir
= get_data_dir(argv
[0]);
334 allocate_hook_memory();
335 create_function_hook_hash();
336 open_smatch_db(option_db_file
);
337 for (i
= 1; i
< ARRAY_SIZE(reg_funcs
); i
++) {
338 func
= reg_funcs
[i
].func
;
339 /* The script IDs start at 1.
340 0 is used for internal stuff. */
341 if (!option_enable
|| reg_funcs
[i
].enabled
== 1 ||
342 (option_disable
&& reg_funcs
[i
].enabled
!= -1) ||
343 strncmp(reg_funcs
[i
].name
, "register_", 9) == 0)
348 free_string(data_dir
);