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_debug_related
;
39 int option_file_output
;
42 char *option_datadir_str
;
47 bool __silence_warnings_for_stmt
;
49 typedef void (*reg_func
) (int id
);
50 #define CK(_x) {.name = #_x, .func = &_x, .enabled = 0},
51 static struct reg_func_info
{
57 #include "check_list.h"
60 int num_checks
= ARRAY_SIZE(reg_funcs
) - 1;
62 const char *check_name(unsigned short id
)
64 if (id
>= ARRAY_SIZE(reg_funcs
))
67 return reg_funcs
[id
].name
;
70 int id_from_name(const char *name
)
74 for (i
= 1; i
< ARRAY_SIZE(reg_funcs
); i
++) {
75 if (!strcmp(name
, reg_funcs
[i
].name
))
81 static void show_checks(void)
85 for (i
= 1; i
< ARRAY_SIZE(reg_funcs
); i
++) {
86 if (!strncmp(reg_funcs
[i
].name
, "check_", 6))
87 printf("%3d. %s\n", i
, reg_funcs
[i
].name
);
91 static void enable_check(int i
)
93 if (1 <= i
&& i
< ARRAY_SIZE(reg_funcs
))
94 reg_funcs
[i
].enabled
= 1;
97 static void enable_checks(const char *s
)
99 int n
= 0, lo
= -1, i
;
108 for (i
= lo
; i
<= n
; ++i
)
118 n
= 10*n
+ (*s
- '0');
121 fprintf(stderr
, "invalid character '%c'\n", *s
);
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_checks((*argvp
)[1] + 9);
217 (*argvp
)[1] = (*argvp
)[0];
224 OPTION(debug_implied
);
225 OPTION(debug_related
);
226 OPTION(assume_loops
);
230 OPTION(param_mapper
);
242 if (strcmp(option_project_str
, "smatch_generic") != 0)
243 option_project
= PROJ_UNKNOWN
;
244 if (strcmp(option_project_str
, "kernel") == 0)
245 option_project
= PROJ_KERNEL
;
246 if (strcmp(option_project_str
, "wine") == 0)
247 option_project
= PROJ_WINE
;
250 static char *read_bin_filename(void)
252 char filename
[PATH_MAX
] = {};
255 pid_t pid
= getpid();
256 sprintf(proc
, "/proc/%d/exe", pid
);
257 if (readlink(proc
, filename
, PATH_MAX
) < 0)
259 return alloc_string(filename
);
262 static char *get_bin_dir(char *arg0
)
266 orig
= read_bin_filename();
268 orig
= alloc_string(arg0
);
269 return dirname(orig
);
272 static char *get_data_dir(char *arg0
)
280 if (option_datadir_str
) {
281 if (access(option_datadir_str
, R_OK
))
282 printf("Warning: %s is not accessible -- ignore.\n",
285 return alloc_string(option_datadir_str
);
288 strncpy(buf
, "smatch_data/", sizeof(buf
));
289 dir
= alloc_string(buf
);
290 if (!access(dir
, R_OK
))
293 strncpy(buf
, bin_dir
, 254);
296 strncat(buf
, "/smatch_data/", 254 - strlen(buf
));
297 dir
= alloc_string(buf
);
298 if (!access(dir
, R_OK
))
301 snprintf(buf
, 254, "%s/smatch_data/", SMATCHDATADIR
);
302 dir
= alloc_string(buf
);
303 if (!access(dir
, R_OK
))
306 printf("Warning: %s is not accessible.\n", dir
);
307 printf("Use --no-data or --data to suppress this message.\n");
311 int main(int argc
, char **argv
)
318 caller_info_fd
= stdout
;
319 parse_args(&argc
, &argv
);
321 /* this gets set back to zero when we parse the first function */
324 bin_dir
= get_bin_dir(argv
[0]);
325 data_dir
= get_data_dir(argv
[0]);
327 allocate_hook_memory();
328 create_function_hook_hash();
329 open_smatch_db(option_db_file
);
330 for (i
= 1; i
< ARRAY_SIZE(reg_funcs
); i
++) {
331 func
= reg_funcs
[i
].func
;
332 /* The script IDs start at 1.
333 0 is used for internal stuff. */
334 if (!option_enable
|| reg_funcs
[i
].enabled
|| !strncmp(reg_funcs
[i
].name
, "register_", 9))
339 free_string(data_dir
);