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.
33 #include "libsysfs/sysfs/libsysfs.h"
34 #include "udev_libc_wrapper.h"
36 #include "udev_utils.h"
37 #include "udev_version.h"
40 /* global variables */
41 char sysfs_path[PATH_SIZE];
42 char udev_root[PATH_SIZE];
43 char udev_db_path[PATH_SIZE];
44 char udev_config_filename[PATH_SIZE];
45 char udev_rules_filename[PATH_SIZE];
46 int udev_log_priority;
51 static int string_is_true(const char *str)
53 if (strcasecmp(str, "true") == 0)
55 if (strcasecmp(str, "yes") == 0)
57 if (strcasecmp(str, "1") == 0)
62 static int log_priority(const char *priority)
67 prio = strtol(priority, &endptr, 10);
68 if (endptr[0] == '\0')
70 if (strncasecmp(priority, "err", 3) == 0)
72 if (strcasecmp(priority, "info") == 0)
74 if (strcasecmp(priority, "debug") == 0)
76 if (string_is_true(priority))
82 static int get_key(char **line, char **key, char **value)
92 while (isspace(linepos[0]))
99 if (linepos[0] == '\0')
101 if (isspace(linepos[0]))
103 if (linepos[0] == '=')
111 /* skip whitespace */
112 while (isspace(linepos[0]))
116 if (linepos[0] == '"')
122 temp = strchr(linepos, '"');
130 static int parse_config_file(void)
132 char line[LINE_SIZE];
144 if (file_map(udev_config_filename, &buf, &bufsize) != 0) {
145 err("can't open '%s' as config file", udev_config_filename);
149 /* loop through the whole file */
152 while (cur < bufsize) {
153 count = buf_get_line(buf, bufsize, cur);
158 if (count >= sizeof(line)) {
159 err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno);
163 /* eat the whitespace */
164 while ((count > 0) && isspace(bufline[0])) {
171 /* see if this is a comment */
172 if (bufline[0] == COMMENT_CHARACTER)
175 strlcpy(line, bufline, count+1);
178 retval = get_key(&linepos, &variable, &value);
180 err("error parsing %s, line %d:%d", udev_config_filename, lineno, (int) (linepos-line));
184 if (strcasecmp(variable, "udev_root") == 0) {
185 strlcpy(udev_root, value, sizeof(udev_root));
186 remove_trailing_char(udev_root, '/');
190 if (strcasecmp(variable, "udev_db") == 0) {
191 strlcpy(udev_db_path, value, sizeof(udev_db_path));
192 remove_trailing_char(udev_db_path, '/');
196 if (strcasecmp(variable, "udev_rules") == 0) {
197 strlcpy(udev_rules_filename, value, sizeof(udev_rules_filename));
198 remove_trailing_char(udev_rules_filename, '/');
202 if (strcasecmp(variable, "udev_log") == 0) {
203 udev_log_priority = log_priority(value);
208 file_unmap(buf, bufsize);
212 void udev_init_config(void)
216 strcpy(udev_root, UDEV_ROOT);
217 strcpy(udev_db_path, UDEV_DB);
218 strcpy(udev_config_filename, UDEV_CONFIG_FILE);
219 strcpy(udev_rules_filename, UDEV_RULES_FILE);
220 udev_log_priority = LOG_ERR;
224 sysfs_get_mnt_path(sysfs_path, sizeof(sysfs_path));
226 /* disable RUN key execution */
227 env = getenv("UDEV_RUN");
228 if (env && !string_is_true(env))
231 env = getenv("UDEV_NO_DEVD");
232 if (env && string_is_true(env))
235 env = getenv("UDEV_NO_HOTPLUGD");
236 if (env && string_is_true(env))
239 env = getenv("UDEV_CONFIG_FILE");
241 strlcpy(udev_config_filename, env, sizeof(udev_config_filename));
242 remove_trailing_char(udev_config_filename, '/');
247 env = getenv("UDEV_LOG");
249 udev_log_priority = log_priority(env);
251 dbg("sysfs_path='%s'", sysfs_path);
252 dbg("UDEV_CONFIG_FILE='%s'", udev_config_filename);
253 dbg("udev_root='%s'", udev_root);
254 dbg("udev_db='%s'", udev_db_path);
255 dbg("udev_rules='%s'", udev_rules_filename);
256 dbg("udev_log=%d", udev_log_priority);