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Diffstat (limited to 'udev_rules_parse.c')
-rw-r--r--udev_rules_parse.c89
1 files changed, 77 insertions, 12 deletions
diff --git a/udev_rules_parse.c b/udev_rules_parse.c
index 89925a35e4..36bf97177d 100644
--- a/udev_rules_parse.c
+++ b/udev_rules_parse.c
@@ -37,9 +37,45 @@
#include "logging.h"
#include "udev_rules.h"
-LIST_HEAD(udev_rule_list);
+/* rules parsed from .rules files*/
+static LIST_HEAD(rules_list);
+static struct list_head *rules_list_current;
-static int add_config_dev(struct udev_rule *rule)
+/* 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)
+{
+ rules_list_current = rules_list.next;
+ rules_array_current = 0;
+
+ return 0;
+}
+
+struct udev_rule *udev_rules_iter_next(void)
+{
+ 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;
+ }
+ return rule;
+}
+
+static int add_rule_to_list(struct udev_rule *rule)
{
struct udev_rule *tmp_rule;
@@ -47,7 +83,7 @@ static int add_config_dev(struct udev_rule *rule)
if (tmp_rule == NULL)
return -ENOMEM;
memcpy(tmp_rule, rule, sizeof(struct udev_rule));
- list_add_tail(&tmp_rule->node, &udev_rule_list);
+ 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', "
@@ -451,9 +487,9 @@ static int rules_parse(const char *filename)
rule.config_line = lineno;
strlcpy(rule.config_file, filename, sizeof(rule.config_file));
- retval = add_config_dev(&rule);
+ retval = add_rule_to_list(&rule);
if (retval) {
- dbg("add_config_dev returned with error %d", retval);
+ dbg("add_rule_to_list returned with error %d", retval);
continue;
error:
err("parse error %s, line %d:%d, rule skipped",
@@ -465,20 +501,47 @@ error:
return retval;
}
+static int rules_map(const char *filename)
+{
+ char *buf;
+ size_t size;
+
+ if (file_map(filename, &buf, &size))
+ return -1;
+ if (size == 0)
+ 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);
+
+ return 0;
+}
+
int udev_rules_init(void)
{
+ char comp[PATH_SIZE];
struct stat stats;
int retval;
+ 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);
+ }
+
if (stat(udev_rules_filename, &stats) != 0)
return -1;
- if ((stats.st_mode & S_IFMT) != S_IFDIR)
+ if ((stats.st_mode & S_IFMT) != S_IFDIR) {
+ dbg("parse single rules file '%s'", udev_rules_filename);
retval = rules_parse(udev_rules_filename);
- else {
+ } else {
struct name_entry *name_loop, *name_tmp;
LIST_HEAD(name_list);
+ dbg("parse rules directory '%s'", udev_rules_filename);
retval = add_matching_files(&name_list, udev_rules_filename, RULEFILE_SUFFIX);
list_for_each_entry_safe(name_loop, name_tmp, &name_list, node) {
@@ -495,9 +558,11 @@ void udev_rules_close(void)
struct udev_rule *rule;
struct udev_rule *temp_rule;
- list_for_each_entry_safe(rule, temp_rule, &udev_rule_list, node) {
- list_del(&rule->node);
- free(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);
+ }
}
-