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.
25 /* define this to enable parsing debugging also */
26 /* #define DEBUG_PARSER */
44 static int add_config_dev(struct config_device
*new_dev
)
46 struct config_device
*tmp_dev
;
48 tmp_dev
= malloc(sizeof(*tmp_dev
));
51 memcpy(tmp_dev
, new_dev
, sizeof(*tmp_dev
));
52 list_add_tail(&tmp_dev
->node
, &config_device_list
);
53 //dump_config_dev(tmp_dev);
57 void dump_config_dev(struct config_device
*dev
)
59 dbg_parse("name='%s', symlink='%s', bus='%s', place='%s', id='%s', "
60 "sysfs_file[0]='%s', sysfs_value[0]='%s', "
61 "kernel='%s', program='%s', result='%s'"
62 "owner='%s', group='%s', mode=%#o",
63 dev
->name
, dev
->symlink
, dev
->bus
, dev
->place
, dev
->id
,
64 dev
->sysfs_pair
[0].file
, dev
->sysfs_pair
[0].value
,
65 dev
->kernel
, dev
->program
, dev
->result
,
66 dev
->owner
, dev
->group
, dev
->mode
);
69 void dump_config_dev_list(void)
71 struct config_device
*dev
;
73 list_for_each_entry(dev
, &config_device_list
, node
)
77 static int add_perm_dev(struct perm_device
*new_dev
)
79 struct perm_device
*dev
;
80 struct perm_device
*tmp_dev
;
82 /* update the values if we already have the device */
83 list_for_each_entry(dev
, &perm_device_list
, node
) {
84 if (strcmp(new_dev
->name
, dev
->name
) != 0)
87 set_empty_perms(dev
, new_dev
->mode
, new_dev
->owner
, new_dev
->group
);
91 /* not found, add new structure to the perm list */
92 tmp_dev
= malloc(sizeof(*tmp_dev
));
96 memcpy(tmp_dev
, new_dev
, sizeof(*tmp_dev
));
97 list_add_tail(&tmp_dev
->node
, &perm_device_list
);
98 //dump_perm_dev(tmp_dev);
102 void dump_perm_dev(struct perm_device
*dev
)
104 dbg_parse("name='%s', owner='%s', group='%s', mode=%#o",
105 dev
->name
, dev
->owner
, dev
->group
, dev
->mode
);
108 void dump_perm_dev_list(void)
110 struct perm_device
*dev
;
112 list_for_each_entry(dev
, &perm_device_list
, node
)
116 /* extract possible KEY{attr} or KEY_attr */
117 static char *get_key_attribute(char *str
)
122 attr
= strchr(str
, '{');
125 pos
= strchr(attr
, '}');
127 dbg("missing closing brace for format");
131 dbg("attribute='%s'", attr
);
135 attr
= strchr(str
, '_');
138 dbg("attribute='%s'", attr
);
145 static int namedev_parse_rules(char *filename
)
147 char line
[LINE_SIZE
];
158 int program_given
= 0;
161 struct config_device dev
;
163 if (file_map(filename
, &buf
, &bufsize
) == 0) {
164 dbg("reading '%s' as rules file", filename
);
166 dbg("can't open '%s' as rules file", filename
);
170 /* loop through the whole file */
173 while (cur
< bufsize
) {
174 count
= buf_get_line(buf
, bufsize
, cur
);
179 if (count
>= LINE_SIZE
) {
180 info("line too long, rule skipped %s, line %d",
185 /* eat the whitespace */
186 while ((count
> 0) && isspace(bufline
[0])) {
193 /* see if this is a comment */
194 if (bufline
[0] == COMMENT_CHARACTER
)
197 strncpy(line
, bufline
, count
);
199 dbg_parse("read '%s'", line
);
201 /* get all known keys */
202 memset(&dev
, 0x00, sizeof(struct config_device
));
207 retval
= parse_get_pair(&temp
, &temp2
, &temp3
);
211 if (strcasecmp(temp2
, FIELD_BUS
) == 0) {
212 strfieldcpy(dev
.bus
, temp3
);
217 if (strcasecmp(temp2
, FIELD_ID
) == 0) {
218 strfieldcpy(dev
.id
, temp3
);
223 if (strcasecmp(temp2
, FIELD_PLACE
) == 0) {
224 strfieldcpy(dev
.place
, temp3
);
229 if (strncasecmp(temp2
, FIELD_SYSFS
, sizeof(FIELD_SYSFS
)-1) == 0) {
230 struct sysfs_pair
*pair
= &dev
.sysfs_pair
[0];
231 int sysfs_pair_num
= 0;
233 /* find first unused pair */
234 while (pair
->file
[0] != '\0') {
236 if (sysfs_pair_num
>= MAX_SYSFS_PAIRS
) {
243 attr
= get_key_attribute(temp2
+ sizeof(FIELD_SYSFS
)-1);
245 dbg("error parsing " FIELD_SYSFS
" attribute");
248 strfieldcpy(pair
->file
, attr
);
249 strfieldcpy(pair
->value
, temp3
);
255 if (strcasecmp(temp2
, FIELD_KERNEL
) == 0) {
256 strfieldcpy(dev
.kernel
, temp3
);
261 if (strcasecmp(temp2
, FIELD_PROGRAM
) == 0) {
263 strfieldcpy(dev
.program
, temp3
);
268 if (strcasecmp(temp2
, FIELD_RESULT
) == 0) {
269 strfieldcpy(dev
.result
, temp3
);
274 if (strncasecmp(temp2
, FIELD_NAME
, sizeof(FIELD_NAME
)-1) == 0) {
275 attr
= get_key_attribute(temp2
+ sizeof(FIELD_NAME
)-1);
276 if (attr
!= NULL
&& strcasecmp(attr
, ATTR_PARTITIONS
) == 0) {
277 dbg_parse("creation of partition nodes requested");
278 dev
.partitions
= PARTITIONS_COUNT
;
280 strfieldcpy(dev
.name
, temp3
);
285 if (strcasecmp(temp2
, FIELD_SYMLINK
) == 0) {
286 strfieldcpy(dev
.symlink
, temp3
);
291 if (strcasecmp(temp2
, FIELD_OWNER
) == 0) {
292 strfieldcpy(dev
.owner
, temp3
);
297 if (strcasecmp(temp2
, FIELD_GROUP
) == 0) {
298 strfieldcpy(dev
.group
, temp3
);
303 if (strcasecmp(temp2
, FIELD_MODE
) == 0) {
304 dev
.mode
= strtol(temp3
, NULL
, 8);
309 dbg("unknown type of field '%s'", temp2
);
313 /* skip line if not any valid key was found */
317 /* simple plausibility checks for given keys */
318 if ((dev
.sysfs_pair
[0].file
[0] == '\0') ^
319 (dev
.sysfs_pair
[0].value
[0] == '\0')) {
320 info("inconsistency in " FIELD_SYSFS
" key");
324 if ((dev
.result
[0] != '\0') && (program_given
== 0)) {
325 info(FIELD_RESULT
" is only useful when "
326 FIELD_PROGRAM
" is called in any rule before");
330 dev
.config_line
= lineno
;
331 strfieldcpy(dev
.config_file
, filename
);
332 retval
= add_config_dev(&dev
);
334 dbg("add_config_dev returned with error %d", retval
);
337 info("parse error %s, line %d:%d, rule skipped",
338 filename
, lineno
, temp
- line
);
342 file_unmap(buf
, bufsize
);
346 static int namedev_parse_permissions(char *filename
)
348 char line
[LINE_SIZE
];
357 struct perm_device dev
;
360 if (file_map(filename
, &buf
, &bufsize
) == 0) {
361 dbg("reading '%s' as permissions file", filename
);
363 dbg("can't open '%s' as permissions file", filename
);
367 /* loop through the whole file */
370 while (cur
< bufsize
) {
371 count
= buf_get_line(buf
, bufsize
, cur
);
376 if (count
>= LINE_SIZE
) {
377 info("line too long, rule skipped %s, line %d",
382 /* eat the whitespace */
383 while ((count
> 0) && isspace(bufline
[0])) {
390 /* see if this is a comment */
391 if (bufline
[0] == COMMENT_CHARACTER
)
394 strncpy(line
, bufline
, count
);
396 dbg_parse("read '%s'", line
);
399 memset(&dev
, 0x00, sizeof(struct perm_device
));
402 temp2
= strsep(&temp
, ":");
404 dbg("cannot parse line '%s'", line
);
407 strfieldcpy(dev
.name
, temp2
);
409 temp2
= strsep(&temp
, ":");
411 dbg("cannot parse line '%s'", line
);
414 strfieldcpy(dev
.owner
, temp2
);
416 temp2
= strsep(&temp
, ":");
418 dbg("cannot parse line '%s'", line
);
421 strfieldcpy(dev
.group
, temp2
);
424 dbg("cannot parse line '%s'", line
);
427 dev
.mode
= strtol(temp
, NULL
, 8);
429 dbg_parse("name='%s', owner='%s', group='%s', mode=%#o",
430 dev
.name
, dev
.owner
, dev
.group
, dev
.mode
);
432 retval
= add_perm_dev(&dev
);
434 dbg("add_perm_dev returned with error %d", retval
);
440 file_unmap(buf
, bufsize
);
444 int namedev_init_rules(void)
448 stat(udev_rules_filename
, &stats
);
449 if ((stats
.st_mode
& S_IFMT
) != S_IFDIR
)
450 return namedev_parse_rules(udev_rules_filename
);
452 return call_foreach_file(namedev_parse_rules
,
453 udev_rules_filename
, RULEFILE_SUFFIX
);
456 int namedev_init_permissions(void)
460 stat(udev_permissions_filename
, &stats
);
461 if ((stats
.st_mode
& S_IFMT
) != S_IFDIR
)
462 return namedev_parse_permissions(udev_permissions_filename
);
464 return call_foreach_file(namedev_parse_permissions
,
465 udev_permissions_filename
, PERMFILE_SUFFIX
);