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"
38 #include "udev_version.h"
42 /* global variables */
43 char sysfs_path
[SYSFS_PATH_MAX
];
44 char udev_root
[PATH_MAX
];
45 char udev_db_filename
[PATH_MAX
+NAME_MAX
];
46 char udev_permissions_filename
[PATH_MAX
+NAME_MAX
];
47 char udev_rules_filename
[PATH_MAX
+NAME_MAX
];
48 char udev_config_filename
[PATH_MAX
+NAME_MAX
];
49 char default_mode_str
[MODE_SIZE
];
50 char default_owner_str
[OWNER_SIZE
];
51 char default_group_str
[GROUP_SIZE
];
57 static int string_is_true(char *str
)
59 if (strcasecmp(str
, "true") == 0)
61 if (strcasecmp(str
, "yes") == 0)
63 if (strcasecmp(str
, "1") == 0)
68 static void init_variables(void)
72 /* fill up the defaults.
73 * If any config values are specified, they will
74 * override these values. */
75 strfieldcpy(udev_root
, UDEV_ROOT
);
76 strfieldcpy(udev_db_filename
, UDEV_DB
);
77 strfieldcpy(udev_config_filename
, UDEV_CONFIG_FILE
);
78 strfieldcpy(udev_rules_filename
, UDEV_RULES_FILE
);
79 strfieldcpy(udev_permissions_filename
, UDEV_PERMISSION_FILE
);
80 udev_log
= string_is_true(UDEV_LOG_DEFAULT
);
83 env
= getenv("UDEV_NO_SLEEP");
84 if (env
&& string_is_true(env
))
88 env
= getenv("UDEV_NO_DEVD");
89 if (env
&& string_is_true(env
))
93 int parse_get_pair(char **orig_string
, char **left
, char **right
)
96 char *string
= *orig_string
;
101 /* eat any whitespace */
102 while (isspace(*string
) || *string
== ',')
105 /* split based on '=' */
106 temp
= strsep(&string
, "=");
111 /* take the right side and strip off the '"' */
112 while (isspace(*string
))
119 temp
= strsep(&string
, "\"");
120 if (!string
|| *temp
== '\0')
123 *orig_string
= string
;
128 static int parse_config_file(void)
130 char line
[LINE_SIZE
];
142 if (file_map(udev_config_filename
, &buf
, &bufsize
) == 0) {
143 dbg("reading '%s' as config file", udev_config_filename
);
145 dbg("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
>= LINE_SIZE
) {
159 info("line too long, conf line skipped %s, line %d",
160 udev_config_filename
, lineno
);
165 if (bufline
[0] == '\0' || bufline
[0] == '\n')
168 /* eat the whitespace */
169 while (isspace(bufline
[0])) {
174 /* see if this is a comment */
175 if (bufline
[0] == COMMENT_CHARACTER
)
178 strncpy(line
, bufline
, count
);
181 dbg_parse("read '%s'", temp
);
183 retval
= parse_get_pair(&temp
, &variable
, &value
);
185 info("%s:%d:%Zd: error parsing '%s'",
186 udev_config_filename
, lineno
, temp
-line
, temp
);
188 dbg_parse("variable='%s', value='%s'", variable
, value
);
190 if (strcasecmp(variable
, "udev_root") == 0) {
191 strfieldcpy(udev_root
, value
);
192 leading_slash(udev_root
);
196 if (strcasecmp(variable
, "udev_db") == 0) {
197 strfieldcpy(udev_db_filename
, value
);
201 if (strcasecmp(variable
, "udev_rules") == 0) {
202 strfieldcpy(udev_rules_filename
, value
);
203 no_leading_slash(udev_rules_filename
);
207 if (strcasecmp(variable
, "udev_permissions") == 0) {
208 strfieldcpy(udev_permissions_filename
, value
);
209 no_leading_slash(udev_permissions_filename
);
213 if (strcasecmp(variable
, "default_mode") == 0) {
214 strfieldcpy(default_mode_str
, value
);
218 if (strcasecmp(variable
, "default_owner") == 0) {
219 strfieldcpy(default_owner_str
, value
);
223 if (strcasecmp(variable
, "default_group") == 0) {
224 strfieldcpy(default_group_str
, value
);
228 if (strcasecmp(variable
, "udev_log") == 0) {
229 udev_log
= string_is_true(value
);
233 info("%s:%d:%Zd: unknown key '%s'",
234 udev_config_filename
, lineno
, temp
-line
, temp
);
237 file_unmap(buf
, bufsize
);
241 static void get_dirs(void)
246 retval
= sysfs_get_mnt_path(sysfs_path
, SYSFS_PATH_MAX
);
248 dbg("sysfs_get_mnt_path failed");
250 /* see if we should try to override any of the default values */
251 if (getenv("UDEV_TEST") != NULL
) {
252 temp
= getenv("SYSFS_PATH");
254 strfieldcpy(sysfs_path
, temp
);
255 no_leading_slash(sysfs_path
);
258 temp
= getenv("UDEV_CONFIG_FILE");
260 strfieldcpy(udev_config_filename
, temp
);
263 dbg("sysfs_path='%s'", sysfs_path
);
264 dbg_parse("udev_root = %s", udev_root
);
265 dbg_parse("udev_config_filename = %s", udev_config_filename
);
266 dbg_parse("udev_db_filename = %s", udev_db_filename
);
267 dbg_parse("udev_rules_filename = %s", udev_rules_filename
);
268 dbg_parse("udev_permissions_filename = %s", udev_permissions_filename
);
269 dbg_parse("udev_log = %d", udev_log
);
273 dbg("udev_root = %s", udev_root
);
274 dbg("udev_config_filename = %s", udev_config_filename
);
275 dbg("udev_db_filename = %s", udev_db_filename
);
276 dbg("udev_rules_filename = %s", udev_rules_filename
);
277 dbg("udev_permissions_filename = %s", udev_permissions_filename
);
278 dbg("udev_log_str = %d", udev_log
);
281 void udev_init_config(void)