xref: /illumos-gate/usr/src/tools/smatch/src/smatch_files.c (revision 1f5207b7604fb44407eb4342aff613f7c4508508)
1 /*
2  * Copyright (C) 2009 Dan Carpenter.
3  *
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.
8  *
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.
13  *
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
16  */
17 
18 #include <string.h>
19 #include <fcntl.h>
20 #include <unistd.h>
21 #include "parse.h"
22 #include "smatch.h"
23 
open_data_file(const char * filename)24 int open_data_file(const char *filename)
25 {
26 	char buf[256];
27 	int fd;
28 
29 	fd = open(filename, O_RDONLY);
30 	if (fd >= 0)
31 		return fd;
32 	if (!data_dir)
33 		return -1;
34 	snprintf(buf, 256, "%s/%s", data_dir, filename);
35 	return open(buf, O_RDONLY);
36 }
37 
open_schema_file(const char * schema)38 int open_schema_file(const char *schema)
39 {
40 	char buf[256];
41 	int fd;
42 
43 	fd = open_data_file(schema);
44 	if (fd >= 0)
45 		return fd;
46 	snprintf(buf, 256, "%s/smatch_data/%s", bin_dir, schema);
47 	return open(buf, O_RDONLY);
48 }
49 
get_tokens_file(const char * filename)50 struct token *get_tokens_file(const char *filename)
51 {
52 	int fd;
53 	struct token *token;
54 
55 	if (option_no_data)
56 		return NULL;
57 	fd = open_data_file(filename);
58 	if (fd < 0)
59 		return NULL;
60 	token = tokenize(filename, fd, NULL, NULL);
61 	close(fd);
62 	return token;
63 }
64