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
];
56 static int string_is_true(char *str
)
58 if (strcasecmp(str
, "true") == 0)
60 if (strcasecmp(str
, "yes") == 0)
62 if (strcasecmp(str
, "1") == 0)
67 static void init_variables(void)
71 /* fill up the defaults.
72 * If any config values are specified, they will
73 * override these values. */
74 strfieldcpy(udev_root
, UDEV_ROOT
);
75 strfieldcpy(udev_db_filename
, UDEV_DB
);
76 strfieldcpy(udev_config_filename
, UDEV_CONFIG_FILE
);
77 strfieldcpy(udev_rules_filename
, UDEV_RULES_FILE
);
78 strfieldcpy(udev_permissions_filename
, UDEV_PERMISSION_FILE
);
79 udev_log
= string_is_true(UDEV_LOG_DEFAULT
);
82 env
= getenv("UDEV_NO_DEVD");
83 if (env
&& string_is_true(env
))
87 int parse_get_pair(char **orig_string
, char **left
, char **right
)
90 char *string
= *orig_string
;
95 /* eat any whitespace */
96 while (isspace(*string
) || *string
== ',')
99 /* split based on '=' */
100 temp
= strsep(&string
, "=");
105 /* take the right side and strip off the '"' */
106 while (isspace(*string
))
113 temp
= strsep(&string
, "\"");
114 if (!string
|| *temp
== '\0')
117 *orig_string
= string
;
122 static int parse_config_file(void)
124 char line
[LINE_SIZE
];
136 if (file_map(udev_config_filename
, &buf
, &bufsize
) == 0) {
137 dbg("reading '%s' as config file", udev_config_filename
);
139 dbg("can't open '%s' as config file", udev_config_filename
);
143 /* loop through the whole file */
146 while (cur
< bufsize
) {
147 count
= buf_get_line(buf
, bufsize
, cur
);
152 if (count
>= LINE_SIZE
) {
153 info("line too long, conf line skipped %s, line %d",
154 udev_config_filename
, lineno
);
158 /* eat the whitespace */
159 while ((count
> 0) && isspace(bufline
[0])) {
166 /* see if this is a comment */
167 if (bufline
[0] == COMMENT_CHARACTER
)
170 strncpy(line
, bufline
, count
);
173 dbg_parse("read '%s'", temp
);
175 retval
= parse_get_pair(&temp
, &variable
, &value
);
177 info("%s:%d:%Zd: error parsing '%s'",
178 udev_config_filename
, lineno
, temp
-line
, temp
);
180 dbg_parse("variable='%s', value='%s'", variable
, value
);
182 if (strcasecmp(variable
, "udev_root") == 0) {
183 strfieldcpy(udev_root
, value
);
184 leading_slash(udev_root
);
188 if (strcasecmp(variable
, "udev_db") == 0) {
189 strfieldcpy(udev_db_filename
, value
);
193 if (strcasecmp(variable
, "udev_rules") == 0) {
194 strfieldcpy(udev_rules_filename
, value
);
195 no_leading_slash(udev_rules_filename
);
199 if (strcasecmp(variable
, "udev_permissions") == 0) {
200 strfieldcpy(udev_permissions_filename
, value
);
201 no_leading_slash(udev_permissions_filename
);
205 if (strcasecmp(variable
, "default_mode") == 0) {
206 strfieldcpy(default_mode_str
, value
);
210 if (strcasecmp(variable
, "default_owner") == 0) {
211 strfieldcpy(default_owner_str
, value
);
215 if (strcasecmp(variable
, "default_group") == 0) {
216 strfieldcpy(default_group_str
, value
);
220 if (strcasecmp(variable
, "udev_log") == 0) {
221 udev_log
= string_is_true(value
);
225 info("%s:%d:%Zd: unknown key '%s'",
226 udev_config_filename
, lineno
, temp
-line
, temp
);
229 file_unmap(buf
, bufsize
);
233 static void get_dirs(void)
238 retval
= sysfs_get_mnt_path(sysfs_path
, SYSFS_PATH_MAX
);
240 dbg("sysfs_get_mnt_path failed");
242 /* see if we should try to override any of the default values */
243 if (getenv("UDEV_TEST") != NULL
) {
244 temp
= getenv("SYSFS_PATH");
246 strfieldcpy(sysfs_path
, temp
);
247 no_leading_slash(sysfs_path
);
250 temp
= getenv("UDEV_CONFIG_FILE");
252 strfieldcpy(udev_config_filename
, temp
);
255 dbg("sysfs_path='%s'", sysfs_path
);
256 dbg_parse("udev_root = %s", udev_root
);
257 dbg_parse("udev_config_filename = %s", udev_config_filename
);
258 dbg_parse("udev_db_filename = %s", udev_db_filename
);
259 dbg_parse("udev_rules_filename = %s", udev_rules_filename
);
260 dbg_parse("udev_permissions_filename = %s", udev_permissions_filename
);
261 dbg_parse("udev_log = %d", udev_log
);
265 dbg("udev_root = %s", udev_root
);
266 dbg("udev_config_filename = %s", udev_config_filename
);
267 dbg("udev_db_filename = %s", udev_db_filename
);
268 dbg("udev_rules_filename = %s", udev_rules_filename
);
269 dbg("udev_permissions_filename = %s", udev_permissions_filename
);
270 dbg("udev_log_str = %d", udev_log
);
273 void udev_init_config(void)