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Diffstat (limited to 'udev_rules.c')
-rw-r--r--udev_rules.c98
1 files changed, 77 insertions, 21 deletions
diff --git a/udev_rules.c b/udev_rules.c
index a25c2e90a8..5669a8593e 100644
--- a/udev_rules.c
+++ b/udev_rules.c
@@ -281,6 +281,46 @@ static int import_program_into_env(struct udevice *udev, const char *program)
return import_keys_into_env(udev, result, reslen);
}
+static int import_parent_into_env(struct udevice *udev, struct sysfs_class_device *class_dev, const char *filter)
+{
+ struct sysfs_class_device *parent = sysfs_get_classdev_parent(class_dev);
+ int rc = -1;
+
+ if (parent != NULL) {
+ struct udevice udev_parent;
+ struct name_entry *name_loop;
+
+ dbg("found parent '%s', get the node name", parent->path);
+ udev_init_device(&udev_parent, NULL, NULL, NULL);
+ /* import the udev_db of the parent */
+ if (udev_db_get_device(&udev_parent, &parent->path[strlen(sysfs_path)]) == 0) {
+ dbg("import stored parent env '%s'", udev_parent.name);
+ list_for_each_entry(name_loop, &udev_parent.env_list, node) {
+ char name[NAME_SIZE];
+ char *pos;
+
+ strlcpy(name, name_loop->name, sizeof(name));
+ pos = strchr(name, '=');
+ if (pos) {
+ pos[0] = '\0';
+ pos++;
+ if (strcmp_pattern(filter, name) == 0) {
+ dbg("import key '%s'", name_loop->name);
+ name_list_add(&udev->env_list, name_loop->name, 0);
+ setenv(name, pos, 1);
+ } else
+ dbg("skip key '%s'", name_loop->name);
+ }
+ }
+ rc = 0;
+ } else
+ dbg("parent not found in database");
+ udev_cleanup_device(&udev_parent);
+ }
+
+ return rc;
+}
+
/* finds the lowest positive N such that <name>N isn't present in the udevdb
* if <name> doesn't exist, 0 is returned, N otherwise
*/
@@ -604,10 +644,12 @@ found:
break;
}
pos = getenv(attr);
- if (pos == NULL)
+ if (pos == NULL) {
+ dbg("env '%s' not avialable", attr);
break;
- strlcat(string, pos, maxsize);
+ }
dbg("substitute env '%s=%s'", attr, pos);
+ strlcat(string, pos, maxsize);
break;
default:
err("unknown substitution type=%i", type);
@@ -635,25 +677,36 @@ static char *key_pair_name(struct udev_rule *rule, struct key_pair *pair)
static int match_key(const char *key_name, struct udev_rule *rule, struct key *key, const char *val)
{
int match;
+ char value[PATH_SIZE];
char *key_value;
+ char *pos;
if (key->operation == KEY_OP_UNSET)
return 0;
- key_value = rule->buf + key->val_off;
+ strlcpy(value, rule->buf + key->val_off, sizeof(value));
+ key_value = value;
- dbg("check for %s '%s' <-> '%s'", key_name, key_value, val);
- match = (strcmp_pattern(key_value, val) == 0);
- if (match && (key->operation != KEY_OP_NOMATCH)) {
- dbg("%s is matching (matching value)", key_name);
- return 0;
- }
- if (!match && (key->operation == KEY_OP_NOMATCH)) {
- dbg("%s is matching, (non matching value)", key_name);
- return 0;
+ dbg("key %s value='%s'", key_name, key_value);
+ while (key_value) {
+ pos = strchr(key_value, '|');
+ if (pos) {
+ pos[0] = '\0';
+ pos++;
+ }
+ dbg("match %s '%s' <-> '%s'", key_name, key_value, val);
+ match = (strcmp_pattern(key_value, val) == 0);
+ if (match && (key->operation != KEY_OP_NOMATCH)) {
+ dbg("%s is true (matching value)", key_name);
+ return 0;
+ }
+ if (!match && (key->operation == KEY_OP_NOMATCH)) {
+ dbg("%s is true (non-matching value)", key_name);
+ return 0;
+ }
+ key_value = pos;
}
-
- dbg("%s is not matching", key_name);
+ dbg("%s is false", key_name);
return -1;
}
@@ -709,14 +762,14 @@ static int match_rule(struct udevice *udev, struct udev_rule *rule,
match = (wait_for_sysfs(udev, key_val(rule, &rule->wait_for_sysfs), 3) == 0);
if (match && (rule->wait_for_sysfs.operation != KEY_OP_NOMATCH)) {
- dbg("WAIT_FOR_SYSFS is matching (matching value)");
+ dbg("WAIT_FOR_SYSFS is true (matching value)");
return 0;
}
if (!match && (rule->wait_for_sysfs.operation == KEY_OP_NOMATCH)) {
- dbg("WAIT_FOR_SYSFS is matching, (non matching value)");
+ dbg("WAIT_FOR_SYSFS is true, (non matching value)");
return 0;
}
- dbg("WAIT_FOR_SYSFS is not matching");
+ dbg("WAIT_FOR_SYSFS is false");
return -1;
}
@@ -801,12 +854,15 @@ try_parent:
strlcpy(import, key_val(rule, &rule->import), sizeof(import));
apply_format(udev, import, sizeof(import), class_dev, sysfs_device);
dbg("check for IMPORT import='%s'", import);
- if (rule->import_exec) {
+ if (rule->import_type == IMPORT_PROGRAM) {
dbg("run executable file import='%s'", import);
rc = import_program_into_env(udev, import);
- } else {
+ } else if (rule->import_type == IMPORT_FILE) {
dbg("import file import='%s'", import);
rc = import_file_into_env(udev, import);
+ } else if (rule->import_type == IMPORT_PARENT && class_dev) {
+ dbg("import parent import='%s'", import);
+ rc = import_parent_into_env(udev, class_dev, import);
}
if (rc) {
dbg("IMPORT failed");
@@ -826,7 +882,7 @@ try_parent:
apply_format(udev, program, sizeof(program), class_dev, sysfs_device);
dbg("check for PROGRAM program='%s", program);
if (execute_program(program, udev->subsystem, result, sizeof(result), NULL) != 0) {
- dbg("PROGRAM is not matching");
+ dbg("PROGRAM is false");
if (rule->program.operation != KEY_OP_NOMATCH)
goto exit;
} else {
@@ -931,7 +987,7 @@ int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev, struct s
if (rule->group.operation == KEY_OP_ASSIGN_FINAL)
udev->group_final = 1;
strlcpy(udev->group, key_val(rule, &rule->group), sizeof(udev->group));
- apply_format(udev, key_val(rule, &rule->group), sizeof(udev->group), class_dev, sysfs_device);
+ apply_format(udev, udev->group, sizeof(udev->group), class_dev, sysfs_device);
dbg("applied group='%s' to '%s'", udev->group, udev->kernel_name);
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-21 22:28:37 +0000