6 * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation version 2 of the License.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 675 Mass Ave, Cambridge, MA 02139, USA.
24 /* define this to enable parsing debugging */
25 /* #define DEBUG_PARSER */
35 #include "libsysfs/sysfs/libsysfs.h"
36 #include "udev_libc_wrapper.h"
38 #include "udev_utils.h"
39 #include "udev_version.h"
43 /* global variables */
44 char sysfs_path[PATH_SIZE];
45 char udev_root[PATH_SIZE];
46 char udev_db_path[PATH_SIZE];
47 char udev_rules_filename[PATH_SIZE];
48 char udev_config_filename[PATH_SIZE];
54 static int string_is_true(const char *str)
56 if (strcasecmp(str, "true") == 0)
58 if (strcasecmp(str, "yes") == 0)
60 if (strcasecmp(str, "1") == 0)
65 static void init_variables(void)
69 /* If any config values are specified, they will override these values. */
70 strcpy(udev_root, UDEV_ROOT);
71 strcpy(udev_db_path, UDEV_DB);
72 strcpy(udev_config_filename, UDEV_CONFIG_FILE);
73 strcpy(udev_rules_filename, UDEV_RULES_FILE);
75 udev_log = string_is_true(UDEV_LOG_DEFAULT);
78 env = getenv("UDEV_NO_DEVD");
79 if (env && string_is_true(env))
83 env = getenv("UDEV_NO_HOTPLUGD");
84 if (env && string_is_true(env))
88 static int parse_config_file(void)
102 if (file_map(udev_config_filename, &buf, &bufsize) != 0) {
103 dbg("can't open '%s' as config file", udev_config_filename);
106 dbg("reading '%s' as config file", udev_config_filename);
108 /* loop through the whole file */
111 while (cur < bufsize) {
112 count = buf_get_line(buf, bufsize, cur);
117 if (count >= sizeof(line)) {
118 info("line too long, conf line skipped %s, line %d",
119 udev_config_filename, lineno);
123 /* eat the whitespace */
124 while ((count > 0) && isspace(bufline[0])) {
131 /* see if this is a comment */
132 if (bufline[0] == COMMENT_CHARACTER)
135 strlcpy(line, bufline, count);
137 dbg_parse("read '%s'", temp);
139 retval = parse_get_pair(&temp, &variable, &value);
141 info("%s:%d:%Zd: error parsing '%s'",
142 udev_config_filename, lineno, temp-line, temp);
144 dbg_parse("variable='%s', value='%s'", variable, value);
146 if (strcasecmp(variable, "udev_root") == 0) {
147 strlcpy(udev_root, value, sizeof(udev_root));
148 no_trailing_slash(udev_root);
152 if (strcasecmp(variable, "udev_db") == 0) {
153 strlcpy(udev_db_path, value, sizeof(udev_db_path));
154 no_trailing_slash(udev_db_path);
158 if (strcasecmp(variable, "udev_rules") == 0) {
159 strlcpy(udev_rules_filename, value, sizeof(udev_rules_filename));
160 no_trailing_slash(udev_rules_filename);
164 if (strcasecmp(variable, "udev_log") == 0) {
165 udev_log = string_is_true(value);
170 file_unmap(buf, bufsize);
174 static void get_dirs(void)
179 retval = sysfs_get_mnt_path(sysfs_path, sizeof(sysfs_path));
181 dbg("sysfs_get_mnt_path failed");
183 /* see if we should try to override any of the default values */
184 if (getenv("UDEV_TEST") != NULL) {
185 temp = getenv("SYSFS_PATH");
187 strlcpy(sysfs_path, temp, sizeof(sysfs_path));
188 no_trailing_slash(sysfs_path);
191 temp = getenv("UDEV_CONFIG_FILE");
193 strlcpy(udev_config_filename, temp, sizeof(udev_config_filename));
197 dbg("sysfs_path='%s'", sysfs_path);
198 dbg("udev_root='%s'", udev_root);
199 dbg("udev_config_filename='%s'", udev_config_filename);
200 dbg("udev_db_path='%s'", udev_db_path);
201 dbg("udev_rules_filename='%s'", udev_rules_filename);
202 dbg("udev_log=%d", udev_log);
205 void udev_init_config(void)