/*
- * udev_rules_parse.c
- *
- * Userspace devfs
- *
* Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2003-2005 Kay Sievers <kay.sievers@vrfy.org>
- *
+ * Copyright (C) 2003-2006 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <sys/stat.h>
#include <errno.h>
-#include "udev_libc_wrapper.h"
#include "udev.h"
-#include "udev_utils.h"
-#include "logging.h"
#include "udev_rules.h"
-/* rules parsed from .rules files*/
-static LIST_HEAD(rules_list);
-static struct list_head *rules_list_current;
-
-/* mapped compiled rules stored on disk */
-static struct udev_rule *rules_array = NULL;
-static size_t rules_array_current;
-static size_t rules_array_size = 0;
-
-static size_t rules_count = 0;
-int udev_rules_iter_init(void)
+void udev_rules_iter_init(struct udev_rules *rules)
{
- rules_list_current = rules_list.next;
- rules_array_current = 0;
-
- return 0;
+ dbg("bufsize=%zi", rules->bufsize);
+ rules->current = 0;
}
-struct udev_rule *udev_rules_iter_next(void)
+struct udev_rule *udev_rules_iter_next(struct udev_rules *rules)
{
static struct udev_rule *rule;
- if (rules_array) {
- if (rules_array_current >= rules_count)
- return NULL;
- rule = &rules_array[rules_array_current];
- rules_array_current++;
- } else {
- dbg("head=%p current=%p next=%p", &rules_list, rules_list_current, rules_list_current->next);
- if (rules_list_current == &rules_list)
- return NULL;
- rule = list_entry(rules_list_current, struct udev_rule, node);
- rules_list_current = rules_list_current->next;
+ if (!rules)
+ return NULL;
+
+ dbg("current=%zi", rules->current);
+ if (rules->current >= rules->bufsize) {
+ dbg("no more rules");
+ return NULL;
}
+
+ /* get next rule */
+ rule = (struct udev_rule *) (rules->buf + rules->current);
+ rules->current += sizeof(struct udev_rule) + rule->bufsize;
+
return rule;
}
-static int add_rule_to_list(struct udev_rule *rule)
+struct udev_rule *udev_rules_iter_label(struct udev_rules *rules, const char *label)
{
- struct udev_rule *tmp_rule;
-
- tmp_rule = malloc(sizeof(*tmp_rule));
- if (tmp_rule == NULL)
- return -ENOMEM;
- memcpy(tmp_rule, rule, sizeof(struct udev_rule));
- list_add_tail(&tmp_rule->node, &rules_list);
-
- dbg("name='%s', symlink='%s', bus='%s', id='%s', "
- "sysfs_file[0]='%s', sysfs_value[0]='%s', "
- "kernel='%s', program='%s', result='%s', "
- "owner='%s', group='%s', mode=%#o, "
- "all_partions=%u, ignore_remove=%u, ignore_device=%u, last_rule=%u",
- rule->name, rule->symlink, rule->bus, rule->id,
- rule->sysfs_pair[0].name, rule->sysfs_pair[0].value,
- rule->kernel, rule->program, rule->result, rule->owner, rule->group, rule->mode,
- rule->partitions, rule->ignore_remove, rule->ignore_device, rule->last_rule);
+ static struct udev_rule *rule;
- return 0;
+next:
+ dbg("current=%zi", rules->current);
+ if (rules->current >= rules->bufsize) {
+ dbg("no more rules");
+ return NULL;
+ }
+ rule = (struct udev_rule *) (rules->buf + rules->current);
+
+ if (strcmp(&rule->buf[rule->label.val_off], label) != 0) {
+ dbg("moving forward, looking for label '%s'", label);
+ rules->current += sizeof(struct udev_rule) + rule->bufsize;
+ goto next;
+ }
+
+ dbg("found label '%s'", label);
+ return rule;
}
static int get_key(char **line, char **key, enum key_operation *operation, char **value)
char *temp;
linepos = *line;
- if (!linepos)
+ if (linepos == NULL && linepos[0] == '\0')
return -1;
/* skip whitespace */
linepos++;
/* get the key */
+ if (linepos[0] == '\0')
+ return -1;
*key = linepos;
+
while (1) {
linepos++;
if (linepos[0] == '\0')
break;
if (linepos[0] == '=')
break;
- if (linepos[0] == '+')
- break;
- if (linepos[0] == '!')
- break;
- if (linepos[0] == ':')
- break;
+ if ((linepos[0] == '+') || (linepos[0] == '!') || (linepos[0] == ':'))
+ if (linepos[1] == '=')
+ break;
}
/* remember end of key */
/* skip whitespace after key */
while (isspace(linepos[0]))
linepos++;
+ if (linepos[0] == '\0')
+ return -1;
/* get operation type */
if (linepos[0] == '=' && linepos[1] == '=') {
/* skip whitespace after operator */
while (isspace(linepos[0]))
linepos++;
+ if (linepos[0] == '\0')
+ return -1;
/* get the value*/
if (linepos[0] == '"')
return NULL;
}
-static int rules_parse(const char *filename)
+static int add_rule_key(struct udev_rule *rule, struct key *key,
+ enum key_operation operation, const char *value)
{
- char line[LINE_SIZE];
- char *bufline;
- int lineno;
- char *linepos;
- char *attr;
- char *buf;
- size_t bufsize;
- size_t cur;
- size_t count;
- int program_given = 0;
- int valid;
- int retval = 0;
- struct udev_rule rule;
+ size_t val_len = strnlen(value, PATH_SIZE);
- if (file_map(filename, &buf, &bufsize) != 0) {
- err("can't open '%s' as rules file", filename);
- return -1;
- }
- dbg("reading '%s' as rules file", filename);
+ key->operation = operation;
- /* loop through the whole file */
- cur = 0;
- lineno = 0;
- while (cur < bufsize) {
- unsigned int i, j;
+ key->val_off = rule->bufsize;
+ strlcpy(rule->buf + rule->bufsize, value, val_len+1);
+ rule->bufsize += val_len+1;
- count = buf_get_line(buf, bufsize, cur);
- bufline = &buf[cur];
- cur += count+1;
- lineno++;
+ return 0;
+}
- if (count >= sizeof(line)) {
- info("line too long, rule skipped %s, line %d", filename, lineno);
- continue;
- }
+static int add_rule_key_pair(struct udev_rule *rule, struct key_pairs *pairs,
+ enum key_operation operation, const char *key, const char *value)
+{
+ size_t key_len = strnlen(key, PATH_SIZE);
- /* eat the whitespace */
- while ((count > 0) && isspace(bufline[0])) {
- bufline++;
- count--;
- }
- if (count == 0)
- continue;
+ if (pairs->count >= PAIRS_MAX) {
+ err("skip, too many keys of the same type in a single rule");
+ return -1;
+ }
- /* see if this is a comment */
- if (bufline[0] == COMMENT_CHARACTER)
- continue;
+ add_rule_key(rule, &pairs->keys[pairs->count].key, operation, value);
- /* skip backslash and newline from multi line rules */
- for (i = j = 0; i < count; i++) {
- if (bufline[i] == '\\' && bufline[i+1] == '\n')
- continue;
+ /* add the key-name of the pair */
+ pairs->keys[pairs->count].key_name_off = rule->bufsize;
+ strlcpy(rule->buf + rule->bufsize, key, key_len+1);
+ rule->bufsize += key_len+1;
- line[j++] = bufline[i];
- }
- line[j] = '\0';
- dbg("read '%s'", line);
+ pairs->count++;
- /* get all known keys */
- memset(&rule, 0x00, sizeof(struct udev_rule));
- linepos = line;
- valid = 0;
+ return 0;
+}
- while (1) {
- char *key;
- char *value;
- enum key_operation operation = KEY_OP_UNSET;
+static int add_to_rules(struct udev_rules *rules, char *line, const char *filename, unsigned int lineno)
+{
+ char buf[sizeof(struct udev_rule) + LINE_SIZE];
+ struct udev_rule *rule;
+ size_t rule_size;
+ int valid;
+ char *linepos;
+ char *attr;
+ size_t padding;
+ int physdev = 0;
+ int retval;
- retval = get_key(&linepos, &key, &operation, &value);
- if (retval)
- break;
+ memset(buf, 0x00, sizeof(buf));
+ rule = (struct udev_rule *) buf;
+ linepos = line;
+ valid = 0;
- if (strcasecmp(key, KEY_KERNEL) == 0) {
- strlcpy(rule.kernel, value, sizeof(rule.kernel));
- rule.kernel_operation = operation;
- valid = 1;
- continue;
- }
+ /* get all the keys */
+ while (1) {
+ char *key;
+ char *value;
+ enum key_operation operation = KEY_OP_UNSET;
- if (strcasecmp(key, KEY_SUBSYSTEM) == 0) {
- strlcpy(rule.subsystem, value, sizeof(rule.subsystem));
- rule.subsystem_operation = operation;
- valid = 1;
- continue;
- }
+ retval = get_key(&linepos, &key, &operation, &value);
+ if (retval)
+ break;
- if (strcasecmp(key, KEY_ACTION) == 0) {
- strlcpy(rule.action, value, sizeof(rule.action));
- rule.action_operation = operation;
- valid = 1;
- continue;
+ if (strcasecmp(key, "ACTION") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid ACTION operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->action, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_DEVPATH) == 0) {
- strlcpy(rule.devpath, value, sizeof(rule.devpath));
- rule.devpath_operation = operation;
- valid = 1;
- continue;
+ if (strcasecmp(key, "DEVPATH") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid DEVPATH operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->devpath, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_BUS) == 0) {
- strlcpy(rule.bus, value, sizeof(rule.bus));
- rule.bus_operation = operation;
- valid = 1;
- continue;
+ if (strcasecmp(key, "KERNEL") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid KERNEL operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->kernel, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_ID) == 0) {
- strlcpy(rule.id, value, sizeof(rule.id));
- rule.id_operation = operation;
- valid = 1;
- continue;
+ if (strcasecmp(key, "SUBSYSTEM") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid SUBSYSTEM operation");
+ goto invalid;
}
+ /* bus, class, subsystem events should all be the same */
+ if (strcmp(value, "subsystem") == 0 ||
+ strcmp(value, "bus") == 0 ||
+ strcmp(value, "class") == 0) {
+ if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
+ err("'%s' must be specified as 'subsystem' "
+ "please fix it in %s:%u", value, filename, lineno);
+ add_rule_key(rule, &rule->subsystem, operation, "subsystem|class|bus");
+ } else
+ add_rule_key(rule, &rule->subsystem, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strncasecmp(key, KEY_SYSFS, sizeof(KEY_SYSFS)-1) == 0) {
- struct key_pair *pair;
-
- if (rule.sysfs_pair_count >= KEY_SYSFS_PAIRS_MAX) {
- err("skip rule, to many " KEY_SYSFS " keys in a single rule");
- goto error;
- }
- pair = &rule.sysfs_pair[rule.sysfs_pair_count];
- attr = get_key_attribute(key + sizeof(KEY_SYSFS)-1);
- if (attr == NULL) {
- err("error parsing " KEY_SYSFS " attribute");
- goto error;
- }
- strlcpy(pair->name, attr, sizeof(pair->name));
- strlcpy(pair->value, value, sizeof(pair->value));
- pair->operation = operation;
- rule.sysfs_pair_count++;
- valid = 1;
- continue;
+ if (strcasecmp(key, "DRIVER") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid DRIVER operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->driver, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strncasecmp(key, KEY_ENV, sizeof(KEY_ENV)-1) == 0) {
- struct key_pair *pair;
+ if (strncasecmp(key, "ATTR{", sizeof("ATTR{")-1) == 0) {
+ attr = get_key_attribute(key + sizeof("ATTR")-1);
+ if (attr == NULL) {
+ err("error parsing ATTR attribute");
+ goto invalid;
+ }
+ if (add_rule_key_pair(rule, &rule->attr, operation, attr, value) != 0)
+ goto invalid;
+ valid = 1;
+ continue;
+ }
- if (rule.env_pair_count >= KEY_ENV_PAIRS_MAX) {
- err("skip rule, to many " KEY_ENV " keys in a single rule");
- goto error;
- }
- pair = &rule.env_pair[rule.env_pair_count];
- attr = get_key_attribute(key + sizeof(KEY_ENV)-1);
- if (attr == NULL) {
- err("error parsing " KEY_ENV " attribute");
- continue;
- }
- strlcpy(pair->name, attr, sizeof(pair->name));
- strlcpy(pair->value, value, sizeof(pair->value));
- pair->operation = operation;
- rule.env_pair_count++;
- valid = 1;
- continue;
+ if (strcasecmp(key, "KERNELS") == 0 ||
+ strcasecmp(key, "ID") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid KERNELS operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->kernels, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_MODALIAS) == 0) {
- strlcpy(rule.modalias, value, sizeof(rule.modalias));
- rule.modalias_operation = operation;
- valid = 1;
- continue;
+ if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
+ strcasecmp(key, "BUS") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid SUBSYSTEMS operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->subsystems, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strncasecmp(key, KEY_IMPORT, sizeof(KEY_IMPORT)-1) == 0) {
- attr = get_key_attribute(key + sizeof(KEY_IMPORT)-1);
- if (attr && strstr(attr, "exec")) {
- dbg(KEY_IMPORT" will be executed");
- rule.import_exec = 1;
- }
- strlcpy(rule.import, value, sizeof(rule.import));
- rule.import_operation = operation;
- valid = 1;
- continue;
+ if (strcasecmp(key, "DRIVERS") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid DRIVERS operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->drivers, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_DRIVER) == 0) {
- strlcpy(rule.driver, value, sizeof(rule.driver));
- rule.driver_operation = operation;
- valid = 1;
- continue;
+ if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
+ strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid ATTRS operation");
+ goto invalid;
}
+ attr = get_key_attribute(key + sizeof("ATTRS")-1);
+ if (attr == NULL) {
+ err("error parsing ATTRS attribute");
+ goto invalid;
+ }
+ if (strncmp(attr, "device/", 7) == 0)
+ err("the 'device' link is deprecated and will be removed from a future kernel, "
+ "please fix it in %s:%u", filename, lineno);
+ else if (strstr(attr, "../") != NULL)
+ err("do not reference parent sysfs directories directly, that may break with a future kernel, "
+ "please fix it in %s:%u", filename, lineno);
+ if (add_rule_key_pair(rule, &rule->attrs, operation, attr, value) != 0)
+ goto invalid;
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_RESULT) == 0) {
- strlcpy(rule.result, value, sizeof(rule.result));
- rule.result_operation = operation;
- valid = 1;
- continue;
+ if (strncasecmp(key, "ENV{", sizeof("ENV{")-1) == 0) {
+ attr = get_key_attribute(key + sizeof("ENV")-1);
+ if (attr == NULL) {
+ err("error parsing ENV attribute");
+ goto invalid;
}
+ if (strncmp(attr, "PHYSDEV", 7) == 0)
+ physdev = 1;
+ if (add_rule_key_pair(rule, &rule->env, operation, attr, value) != 0)
+ goto invalid;
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_PROGRAM) == 0) {
- strlcpy(rule.program, value, sizeof(rule.program));
- rule.program_operation = operation;
- program_given = 1;
- valid = 1;
- continue;
+ if (strcasecmp(key, "PROGRAM") == 0) {
+ add_rule_key(rule, &rule->program, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "RESULT") == 0) {
+ if (operation != KEY_OP_MATCH &&
+ operation != KEY_OP_NOMATCH) {
+ err("invalid RESULT operation");
+ goto invalid;
}
+ add_rule_key(rule, &rule->result, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strncasecmp(key, KEY_NAME, sizeof(KEY_NAME)-1) == 0) {
- attr = get_key_attribute(key + sizeof(KEY_NAME)-1);
- if (attr != NULL) {
- if (strstr(attr, OPTION_PARTITIONS) != NULL) {
- dbg("creation of partition nodes requested");
- rule.partitions = DEFAULT_PARTITIONS_COUNT;
- }
- if (strstr(attr, OPTION_IGNORE_REMOVE) != NULL) {
- dbg("remove event should be ignored");
- rule.ignore_remove = 1;
- }
+ if (strncasecmp(key, "IMPORT", sizeof("IMPORT")-1) == 0) {
+ attr = get_key_attribute(key + sizeof("IMPORT")-1);
+ if (attr != NULL && strstr(attr, "program")) {
+ dbg("IMPORT will be executed");
+ rule->import_type = IMPORT_PROGRAM;
+ } else if (attr != NULL && strstr(attr, "file")) {
+ dbg("IMPORT will be included as file");
+ rule->import_type = IMPORT_FILE;
+ } else if (attr != NULL && strstr(attr, "parent")) {
+ dbg("IMPORT will include the parent values");
+ rule->import_type = IMPORT_PARENT;
+ } else {
+ /* figure it out if it is executable */
+ char file[PATH_SIZE];
+ char *pos;
+ struct stat statbuf;
+
+ strlcpy(file, value, sizeof(file));
+ pos = strchr(file, ' ');
+ if (pos)
+ pos[0] = '\0';
+
+ /* allow programs in /lib/udev called without the path */
+ if (strchr(file, '/') == NULL) {
+ strlcpy(file, "/lib/udev/", sizeof(file));
+ strlcat(file, value, sizeof(file));
+ pos = strchr(file, ' ');
+ if (pos)
+ pos[0] = '\0';
}
- rule.name_operation = operation;
- strlcpy(rule.name, value, sizeof(rule.name));
- valid = 1;
- continue;
- }
- if (strcasecmp(key, KEY_SYMLINK) == 0) {
- strlcpy(rule.symlink, value, sizeof(rule.symlink));
- rule.symlink_operation = operation;
- valid = 1;
- continue;
+ dbg("IMPORT auto mode for '%s'", file);
+ if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
+ dbg("IMPORT is executable, will be executed (autotype)");
+ rule->import_type = IMPORT_PROGRAM;
+ } else {
+ dbg("IMPORT is not executable, will be included as file (autotype)");
+ rule->import_type = IMPORT_FILE;
+ }
}
+ add_rule_key(rule, &rule->import, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_OWNER) == 0) {
- strlcpy(rule.owner, value, sizeof(rule.owner));
- rule.owner_operation = operation;
- valid = 1;
- continue;
- }
+ if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
+ attr = get_key_attribute(key + sizeof("TEST")-1);
+ if (attr != NULL)
+ rule->test_mode_mask = strtol(attr, NULL, 8);
+ add_rule_key(rule, &rule->test, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_GROUP) == 0) {
- strlcpy(rule.group, value, sizeof(rule.group));
- rule.group_operation = operation;
- valid = 1;
- continue;
+ if (strncasecmp(key, "RUN", sizeof("RUN")-1) == 0) {
+ attr = get_key_attribute(key + sizeof("RUN")-1);
+ if (attr != NULL) {
+ if (strstr(attr, "ignore_error"))
+ rule->run_ignore_error = 1;
}
+ add_rule_key(rule, &rule->run, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_MODE) == 0) {
- rule.mode = strtol(value, NULL, 8);
- rule.mode_operation = operation;
- valid = 1;
- continue;
- }
+ if (strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
+ add_rule_key(rule, &rule->wait_for_sysfs, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_RUN) == 0) {
- strlcpy(rule.run, value, sizeof(rule.run));
- rule.run_operation = operation;
- valid = 1;
- continue;
- }
+ if (strcasecmp(key, "LABEL") == 0) {
+ add_rule_key(rule, &rule->label, operation, value);
+ valid = 1;
+ continue;
+ }
- if (strcasecmp(key, KEY_OPTIONS) == 0) {
- if (strstr(value, OPTION_LAST_RULE) != NULL) {
- dbg("last rule to be applied");
- rule.last_rule = 1;
- }
- if (strstr(value, OPTION_IGNORE_DEVICE) != NULL) {
- dbg("device should be ignored");
- rule.ignore_device = 1;
+ if (strcasecmp(key, "GOTO") == 0) {
+ add_rule_key(rule, &rule->goto_label, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
+ attr = get_key_attribute(key + sizeof("NAME")-1);
+ if (attr != NULL) {
+ if (strstr(attr, "all_partitions") != NULL) {
+ dbg("creation of partition nodes requested");
+ rule->partitions = DEFAULT_PARTITIONS_COUNT;
}
- if (strstr(value, OPTION_IGNORE_REMOVE) != NULL) {
+ if (strstr(attr, "ignore_remove") != NULL) {
dbg("remove event should be ignored");
- rule.ignore_remove = 1;
+ rule->ignore_remove = 1;
}
- if (strstr(value, OPTION_PARTITIONS) != NULL) {
- dbg("creation of partition nodes requested");
- rule.partitions = DEFAULT_PARTITIONS_COUNT;
+ }
+ if (value[0] == '\0')
+ dbg("name empty, node creation supressed");
+ add_rule_key(rule, &rule->name, operation, value);
+ continue;
+ }
+
+ if (strcasecmp(key, "SYMLINK") == 0) {
+ if (operation == KEY_OP_MATCH ||
+ operation == KEY_OP_NOMATCH)
+ add_rule_key(rule, &rule->symlink_match, operation, value);
+ else
+ add_rule_key(rule, &rule->symlink, operation, value);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(key, "OWNER") == 0) {
+ valid = 1;
+ if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
+ char *endptr;
+ strtoul(value, &endptr, 10);
+ if (endptr[0] != '\0') {
+ char owner[32];
+ uid_t uid = lookup_user(value);
+ dbg("replacing username='%s' by id=%i", value, uid);
+ sprintf(owner, "%u", (unsigned int) uid);
+ add_rule_key(rule, &rule->owner, operation, owner);
+ continue;
}
- valid = 1;
- continue;
}
- err("unknown key '%s'", key);
- goto error;
+ add_rule_key(rule, &rule->owner, operation, value);
+ continue;
}
- /* skip line if not any valid key was found */
- if (!valid)
- goto error;
+ if (strcasecmp(key, "GROUP") == 0) {
+ valid = 1;
+ if (rules->resolve_names && (!strchr(value, '$') && !strchr(value, '%'))) {
+ char *endptr;
+ strtoul(value, &endptr, 10);
+ if (endptr[0] != '\0') {
+ char group[32];
+ gid_t gid = lookup_group(value);
+ dbg("replacing groupname='%s' by id=%i", value, gid);
+ sprintf(group, "%u", (unsigned int) gid);
+ add_rule_key(rule, &rule->group, operation, group);
+ continue;
+ }
+ }
- if ((rule.result[0] != '\0') && (program_given == 0)) {
- info(KEY_RESULT " is only useful when " KEY_PROGRAM " is called in any rule before");
- goto error;
+ add_rule_key(rule, &rule->group, operation, value);
+ continue;
}
- rule.config_line = lineno;
- strlcpy(rule.config_file, filename, sizeof(rule.config_file));
- retval = add_rule_to_list(&rule);
- if (retval) {
- dbg("add_rule_to_list returned with error %d", retval);
+ if (strcasecmp(key, "MODE") == 0) {
+ rule->mode = strtol(value, NULL, 8);
+ rule->mode_operation = operation;
+ valid = 1;
continue;
-error:
- err("parse error %s, line %d:%d, rule skipped",
- filename, lineno, (int) (linepos - line));
}
+
+ if (strcasecmp(key, "OPTIONS") == 0) {
+ const char *pos;
+
+ if (strstr(value, "last_rule") != NULL) {
+ dbg("last rule to be applied");
+ rule->last_rule = 1;
+ }
+ if (strstr(value, "ignore_device") != NULL) {
+ dbg("device should be ignored");
+ rule->ignore_device = 1;
+ }
+ if (strstr(value, "ignore_remove") != NULL) {
+ dbg("remove event should be ignored");
+ rule->ignore_remove = 1;
+ }
+ pos = strstr(value, "link_priority=");
+ if (pos != NULL) {
+ rule->link_priority = atoi(&pos[strlen("link_priority=")]);
+ dbg("link priority=%i", rule->link_priority);
+ }
+ pos = strstr(value, "string_escape=");
+ if (pos != NULL) {
+ pos = &pos[strlen("string_escape=")];
+ if (strncmp(pos, "none", strlen("none")) == 0)
+ rule->string_escape = ESCAPE_NONE;
+ else if (strncmp(pos, "replace", strlen("replace")) == 0)
+ rule->string_escape = ESCAPE_REPLACE;
+ }
+ if (strstr(value, "all_partitions") != NULL) {
+ dbg("creation of partition nodes requested");
+ rule->partitions = DEFAULT_PARTITIONS_COUNT;
+ }
+ valid = 1;
+ continue;
+ }
+
+ err("unknown key '%s' in %s:%u", key, filename, lineno);
}
- file_unmap(buf, bufsize);
- return retval;
+ if (physdev && rule->wait_for_sysfs.operation == KEY_OP_UNSET)
+ err("PHYSDEV* values are deprecated and will be removed from a future kernel, "
+ "please fix it in %s:%u", filename, lineno);
+
+ /* skip line if not any valid key was found */
+ if (!valid)
+ goto invalid;
+
+ /* grow buffer and add rule */
+ rule_size = sizeof(struct udev_rule) + rule->bufsize;
+ padding = (sizeof(size_t) - rule_size % sizeof(size_t)) % sizeof(size_t);
+ dbg("add %zi padding bytes", padding);
+ rule_size += padding;
+ rule->bufsize += padding;
+
+ rules->buf = realloc(rules->buf, rules->bufsize + rule_size);
+ if (!rules->buf) {
+ err("realloc failed");
+ goto exit;
+ }
+ dbg("adding rule to offset %zi", rules->bufsize);
+ memcpy(rules->buf + rules->bufsize, rule, rule_size);
+ rules->bufsize += rule_size;
+exit:
+ return 0;
+
+invalid:
+ err("invalid rule '%s:%u'", filename, lineno);
+ return -1;
}
-static int rules_map(const char *filename)
+static int parse_file(struct udev_rules *rules, const char *filename)
{
+ char line[LINE_SIZE];
+ char *bufline;
+ unsigned int lineno;
char *buf;
- size_t size;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
+ int retval = 0;
- if (file_map(filename, &buf, &size))
- return -1;
- if (size == 0)
+ if (file_map(filename, &buf, &bufsize) != 0) {
+ err("can't open '%s' as rules file: %s", filename, strerror(errno));
return -1;
- rules_array = (struct udev_rule *) buf;
- rules_array_size = size;
- rules_count = size / sizeof(struct udev_rule);
- dbg("found %zi compiled rules", rules_count);
+ }
+ info("reading '%s' as rules file", filename);
- return 0;
+ /* loop through the whole file */
+ cur = 0;
+ lineno = 0;
+ while (cur < bufsize) {
+ unsigned int i, j;
+
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
+ lineno++;
+
+ /* eat the whitespace */
+ while ((count > 0) && isspace(bufline[0])) {
+ bufline++;
+ count--;
+ }
+ if (count == 0)
+ continue;
+
+ /* see if this is a comment */
+ if (bufline[0] == COMMENT_CHARACTER)
+ continue;
+
+ if (count >= sizeof(line)) {
+ err("line too long, rule skipped '%s:%u'", filename, lineno);
+ continue;
+ }
+
+ /* skip backslash and newline from multiline rules */
+ for (i = j = 0; i < count; i++) {
+ if (bufline[i] == '\\' && bufline[i+1] == '\n')
+ continue;
+
+ line[j++] = bufline[i];
+ }
+ line[j] = '\0';
+
+ dbg("read '%s'", line);
+ add_to_rules(rules, line, filename, lineno);
+ }
+
+ file_unmap(buf, bufsize);
+ return retval;
}
-int udev_rules_init(void)
+int udev_rules_init(struct udev_rules *rules, int resolve_names)
{
- char comp[PATH_SIZE];
- struct stat stats;
- int retval;
+ struct stat statbuf;
+ char filename[PATH_MAX];
+ LIST_HEAD(name_list);
+ LIST_HEAD(dyn_list);
+ struct name_entry *name_loop, *name_tmp;
+ struct name_entry *dyn_loop, *dyn_tmp;
+ int retval = 0;
- strlcpy(comp, udev_rules_filename, sizeof(comp));
- strlcat(comp, ".compiled", sizeof(comp));
- if (stat(comp, &stats) == 0) {
- dbg("parse compiled rules '%s'", comp);
- return rules_map(comp);
- }
+ memset(rules, 0x00, sizeof(struct udev_rules));
+ rules->resolve_names = resolve_names;
- if (stat(udev_rules_filename, &stats) != 0)
+ /* read main config from single file or all files in a directory */
+ if (stat(udev_rules_dir, &statbuf) != 0)
return -1;
-
- if ((stats.st_mode & S_IFMT) != S_IFDIR) {
- dbg("parse single rules file '%s'", udev_rules_filename);
- retval = rules_parse(udev_rules_filename);
+ if ((statbuf.st_mode & S_IFMT) != S_IFDIR) {
+ dbg("parse single rules file '%s'", udev_rules_dir);
+ name_list_add(&name_list, udev_rules_dir, 1);
} else {
- struct name_entry *name_loop, *name_tmp;
- LIST_HEAD(name_list);
+ dbg("parse rules directory '%s'", udev_rules_dir);
+ retval = add_matching_files(&name_list, udev_rules_dir, RULESFILE_SUFFIX);
+ }
- dbg("parse rules directory '%s'", udev_rules_filename);
- retval = add_matching_files(&name_list, udev_rules_filename, RULEFILE_SUFFIX);
+ /* read dynamic rules directory */
+ strlcpy(filename, udev_root, sizeof(filename));
+ strlcat(filename, "/"RULES_DYN_DIR, sizeof(filename));
+ if (stat(filename, &statbuf) != 0) {
+ create_path(filename);
+ mkdir(filename, 0755);
+ }
+ add_matching_files(&dyn_list, filename, RULESFILE_SUFFIX);
+
+ /* sort dynamic rules files by basename into list of files */
+ list_for_each_entry_safe(dyn_loop, dyn_tmp, &dyn_list, node) {
+ const char *dyn_base = strrchr(dyn_loop->name, '/');
+
+ if (dyn_base == NULL)
+ continue;
list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) {
- rules_parse(name_loop->name);
- list_del(&name_loop->node);
+ const char *name_base = strrchr(name_loop->name, '/');
+
+ if (name_base == NULL)
+ continue;
+
+ if (strcmp(name_base, dyn_base) > 0)
+ break;
}
+ list_move_tail(&dyn_loop->node, &name_loop->node);
+ }
+
+ /* parse list of files */
+ list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) {
+ if (stat(name_loop->name, &statbuf) == 0) {
+ if (statbuf.st_size)
+ parse_file(rules, name_loop->name);
+ else
+ dbg("empty rules file '%s'", name_loop->name);
+ } else
+ err("could not read '%s': %s", name_loop->name, strerror(errno));
+ list_del(&name_loop->node);
+ free(name_loop);
}
return retval;
}
-void udev_rules_close(void)
+void udev_rules_cleanup(struct udev_rules *rules)
{
- struct udev_rule *rule;
- struct udev_rule *temp_rule;
-
- if (rules_array)
- file_unmap(rules_array, rules_array_size);
- else
- list_for_each_entry_safe(rule, temp_rule, &rules_list, node) {
- list_del(&rule->node);
- free(rule);
- }
+ if (rules->buf) {
+ free(rules->buf);
+ rules->buf = NULL;
+ }
}
+
~ianmdlvl / elogind.git / blobdiff