chiark / gitweb /
skip entire rule containing device naming keys, if no device can be named
[elogind.git] / udev / udev-rules.c
index 0643811d7a458809bf6d5e517f0f55dd4d8f886d..d1c02e92041b83d1432825dd1b3c51d679e9e878 100644 (file)
@@ -93,6 +93,7 @@ enum token_type {
        TK_M_WAITFOR,                   /* val */
        TK_M_ATTR,                      /* val, attr */
 
+       TK_M_PARENTS_MIN,
        TK_M_KERNELS,                   /* val */
        TK_M_SUBSYSTEMS,                /* val */
        TK_M_DRIVERS,                   /* val */
@@ -146,6 +147,7 @@ static const char *token_str[] = {
        [TK_M_WAITFOR] =                "M WAITFOR",
        [TK_M_ATTR] =                   "M ATTR",
 
+       [TK_M_PARENTS_MIN] =        "M PARENTS_MIN",
        [TK_M_KERNELS] =                "M KERNELS",
        [TK_M_SUBSYSTEMS] =             "M SUBSYSTEMS",
        [TK_M_DRIVERS] =                "M DRIVERS",
@@ -184,15 +186,21 @@ static const char *token_str[] = {
        [TK_END] =                      "END",
 };
 
+/* we try to pack stuff in a way that we take only 16 bytes per token */
 struct token {
-       enum token_type type;
        union {
+               unsigned short type;            /* same as in rule and key */
                struct {
+                       unsigned short type;
+                       unsigned short flags;
                        unsigned int next_rule;
                        unsigned int label_off;
-                       unsigned int filename_off;
+                       unsigned short filename_off;
+                       unsigned short filename_line;
                } rule;
                struct {
+                       unsigned short type;
+                       unsigned short flags;
                        unsigned short op;
                        unsigned short glob;
                        unsigned int value_off;
@@ -252,7 +260,7 @@ struct udev_rules {
        unsigned int gids_max;
 };
 
-/* NOTE: we could lookup and return existing strings, or tails of strings */
+/* we could lookup and return existing strings, or tails of strings */
 static int add_string(struct udev_rules *rules, const char *str)
 {
        size_t len = strlen(str)+1;
@@ -547,11 +555,12 @@ static int wait_for_file(struct udev_device *dev, const char *file, int timeout)
 {
        struct udev *udev = udev_device_get_udev(dev);
        char filepath[UTIL_PATH_SIZE];
-       char devicepath[UTIL_PATH_SIZE] = "";
+       char devicepath[UTIL_PATH_SIZE];
        struct stat stats;
        int loop = timeout * WAIT_LOOP_PER_SECOND;
 
        /* a relative path is a device attribute */
+       devicepath[0] = '\0';
        if (file[0] != '/') {
                util_strlcpy(devicepath, udev_get_sys_path(udev), sizeof(devicepath));
                util_strlcat(devicepath, udev_device_get_devpath(dev), sizeof(devicepath));
@@ -728,9 +737,9 @@ static char *get_key_attribute(struct udev *udev, char *str)
        return NULL;
 }
 
-static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
-                         enum operation_type op,
-                         const char *value, const void *data)
+static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type,
+                       enum operation_type op,
+                       const char *value, const void *data)
 {
        struct token *token = &rule_tmp->token[rule_tmp->token_cur];
        const char *attr = data;
@@ -805,6 +814,7 @@ static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
                token->key.event_timeout = *(int *)data;
                break;
        case TK_RULE:
+       case TK_M_PARENTS_MIN:
        case TK_M_PARENTS_MAX:
        case TK_M_MAX:
        case TK_END:
@@ -840,7 +850,7 @@ static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
                }
        }
 
-       token->type = type;
+       token->key.type = type;
        token->key.op = op;
        token->key.glob = glob;
        rule_tmp->token_cur++;
@@ -867,11 +877,12 @@ static void dump_token(struct udev_rules *rules, struct token *token)
                        const char *tk_ptr = (char *)token;
                        unsigned int off = tk_ptr - tks_ptr;
 
-                       dbg(rules->udev, "* RULE '%s', off: %u(%u), next: %u, label: '%s'\n",
-                           &rules->buf[token->rule.filename_off],
+                       dbg(rules->udev, "* RULE %s:%u, off: %u(%u), next: %u, label: '%s', flags: 0x%02x\n",
+                           &rules->buf[token->rule.filename_off], token->rule.filename_line,
                            off / (unsigned int) sizeof(struct token), off,
                            token->rule.next_rule,
-                           &rules->buf[token->rule.label_off]);
+                           &rules->buf[token->rule.label_off],
+                           token->rule.flags);
                        break;
                }
        case TK_M_ACTION:
@@ -942,6 +953,7 @@ static void dump_token(struct udev_rules *rules, struct token *token)
        case TK_END:
                dbg(rules->udev, "* %s\n", token_str[type]);
                break;
+       case TK_M_PARENTS_MIN:
        case TK_M_PARENTS_MAX:
        case TK_M_MAX:
        case TK_UNSET:
@@ -1015,6 +1027,7 @@ static int add_rule(struct udev_rules *rules, char *line,
        rule_tmp.rules = rules;
        rule_tmp.rule.type = TK_RULE;
        rule_tmp.rule.rule.filename_off = filename_off;
+       rule_tmp.rule.rule.filename_line = lineno;
 
        linepos = line;
        while (1) {
@@ -1030,7 +1043,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid ACTION operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_ACTION, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_ACTION, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1040,7 +1053,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid DEVPATH operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_DEVPATH, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1050,7 +1063,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid KERNEL operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_KERNEL, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_KERNEL, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1067,9 +1080,9 @@ static int add_rule(struct udev_rules *rules, char *line,
                                if (strcmp(value, "bus") == 0 || strcmp(value, "class") == 0)
                                        err(rules->udev, "'%s' must be specified as 'subsystem' \n"
                                            "please fix it in %s:%u", value, filename, lineno);
-                               rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
+                               rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, "subsystem|class|bus", NULL);
                        } else
-                               rule_add_token(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_M_SUBSYSTEM, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1079,7 +1092,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid DRIVER operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_DRIVER, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_DRIVER, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1091,9 +1104,9 @@ static int add_rule(struct udev_rules *rules, char *line,
                                goto invalid;
                        }
                        if (op < OP_MATCH_MAX) {
-                               rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
+                               rule_add_key(&rule_tmp, TK_M_ATTR, op, value, attr);
                        } else {
-                               rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
+                               rule_add_key(&rule_tmp, TK_A_ATTR, op, value, attr);
                        }
                        valid = 1;
                        continue;
@@ -1105,7 +1118,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid KERNELS operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_KERNELS, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_KERNELS, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1116,7 +1129,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid SUBSYSTEMS operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_SUBSYSTEMS, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1126,7 +1139,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid DRIVERS operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_DRIVERS, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1148,7 +1161,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                        else if (strstr(attr, "../") != NULL)
                                err(rules->udev, "do not reference parent sysfs directories directly, "
                                    "it may break with a future kernel, please fix it in %s:%u", filename, lineno);
-                       rule_add_token(&rule_tmp, TK_M_ATTRS, op, value, attr);
+                       rule_add_key(&rule_tmp, TK_M_ATTRS, op, value, attr);
                        valid = 1;
                        continue;
                }
@@ -1162,10 +1175,10 @@ static int add_rule(struct udev_rules *rules, char *line,
                        if (strncmp(attr, "PHYSDEV", 7) == 0)
                                physdev = 1;
                        if (op < OP_MATCH_MAX) {
-                               if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
+                               if (rule_add_key(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
                                        goto invalid;
                        } else {
-                               if (rule_add_token(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
+                               if (rule_add_key(&rule_tmp, TK_A_ENV, op, value, attr) != 0)
                                        goto invalid;
                        }
                        valid = 1;
@@ -1173,7 +1186,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "PROGRAM") == 0) {
-                       rule_add_token(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_PROGRAM, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1183,7 +1196,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "invalid RESULT operation\n");
                                goto invalid;
                        }
-                       rule_add_token(&rule_tmp, TK_M_RESULT, op, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_RESULT, op, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1192,15 +1205,15 @@ static int add_rule(struct udev_rules *rules, char *line,
                        attr = get_key_attribute(rules->udev, key + sizeof("IMPORT")-1);
                        if (attr != NULL && strstr(attr, "program")) {
                                dbg(rules->udev, "IMPORT will be executed\n");
-                               rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
                                valid = 1;
                        } else if (attr != NULL && strstr(attr, "file")) {
                                dbg(rules->udev, "IMPORT will be included as file\n");
-                               rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
                                valid = 1;
                        } else if (attr != NULL && strstr(attr, "parent")) {
                                dbg(rules->udev, "IMPORT will include the parent values\n");
-                               rule_add_token(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_M_IMPORT_PARENT, op, value, NULL);
                                valid = 1;
                        } else {
                                /* figure it out if it is executable */
@@ -1225,11 +1238,11 @@ static int add_rule(struct udev_rules *rules, char *line,
                                dbg(rules->udev, "IMPORT auto mode for '%s'\n", file);
                                if (!lstat(file, &statbuf) && (statbuf.st_mode & S_IXUSR)) {
                                        dbg(rules->udev, "IMPORT will be executed (autotype)\n");
-                                       rule_add_token(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
+                                       rule_add_key(&rule_tmp, TK_M_IMPORT_PROG, op, value, NULL);
                                        valid = 1;
                                } else {
                                        dbg(rules->udev, "IMPORT will be included as file (autotype)\n");
-                                       rule_add_token(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
+                                       rule_add_key(&rule_tmp, TK_M_IMPORT_FILE, op, value, NULL);
                                        valid = 1;
                                }
                        }
@@ -1246,9 +1259,9 @@ static int add_rule(struct udev_rules *rules, char *line,
                        attr = get_key_attribute(rules->udev, key + sizeof("TEST")-1);
                        if (attr != NULL) {
                                mode = strtol(attr, NULL, 8);
-                               rule_add_token(&rule_tmp, TK_M_TEST, op, value, &mode);
+                               rule_add_key(&rule_tmp, TK_M_TEST, op, value, &mode);
                        } else {
-                               rule_add_token(&rule_tmp, TK_M_TEST, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_M_TEST, op, value, NULL);
                        }
                        valid = 1;
                        continue;
@@ -1260,13 +1273,13 @@ static int add_rule(struct udev_rules *rules, char *line,
                        attr = get_key_attribute(rules->udev, key + sizeof("RUN")-1);
                        if (attr != NULL && strstr(attr, "ignore_error"))
                                flag = 1;
-                       rule_add_token(&rule_tmp, TK_A_RUN, op, value, &flag);
+                       rule_add_key(&rule_tmp, TK_A_RUN, op, value, &flag);
                        valid = 1;
                        continue;
                }
 
                if (strcasecmp(key, "WAIT_FOR") == 0 || strcasecmp(key, "WAIT_FOR_SYSFS") == 0) {
-                       rule_add_token(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
+                       rule_add_key(&rule_tmp, TK_M_WAITFOR, 0, value, NULL);
                        valid = 1;
                        continue;
                }
@@ -1278,40 +1291,42 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "GOTO") == 0) {
-                       rule_add_token(&rule_tmp, TK_A_GOTO, 0, value, NULL);
+                       rule_add_key(&rule_tmp, TK_A_GOTO, 0, value, NULL);
                        valid = 1;
                        continue;
                }
 
                if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
                        if (op < OP_MATCH_MAX) {
-                               rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_M_NAME, op, value, NULL);
                        } else {
                                if (value[0] == '\0')
                                        dbg(rules->udev, "name empty, node creation suppressed\n");
-                               rule_add_token(&rule_tmp, TK_A_NAME, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_A_NAME, op, value, NULL);
                                attr = get_key_attribute(rules->udev, key + sizeof("NAME")-1);
                                if (attr != NULL) {
                                        if (strstr(attr, "all_partitions") != NULL) {
                                                int num = DEFAULT_FAKE_PARTITIONS_COUNT;
 
                                                dbg(rules->udev, "creation of partition nodes requested\n");
-                                               rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
+                                               rule_add_key(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
                                        }
                                        if (strstr(attr, "ignore_remove") != NULL) {
                                                dbg(rules->udev, "remove event should be ignored\n");
-                                               rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
+                                               rule_add_key(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
                                        }
                                }
                        }
+                       rule_tmp.rule.rule.flags = 1;
                        continue;
                }
 
                if (strcasecmp(key, "SYMLINK") == 0) {
                        if (op < OP_MATCH_MAX)
-                               rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
                        else
-                               rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
+                       rule_tmp.rule.rule.flags = 1;
                        valid = 1;
                        continue;
                }
@@ -1322,13 +1337,14 @@ static int add_rule(struct udev_rules *rules, char *line,
 
                        uid = strtoul(value, &endptr, 10);
                        if (endptr[0] == '\0') {
-                               rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
+                               rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
                        } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
                                uid = add_uid(rules, value);
-                               rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
+                               rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid);
                        } else {
-                               rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL);
                        }
+                       rule_tmp.rule.rule.flags = 1;
                        valid = 1;
                        continue;
                }
@@ -1339,13 +1355,14 @@ static int add_rule(struct udev_rules *rules, char *line,
 
                        gid = strtoul(value, &endptr, 10);
                        if (endptr[0] == '\0') {
-                               rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
+                               rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
                        } else if (rules->resolve_names && strchr("$%", value[0]) == NULL) {
                                gid = add_gid(rules, value);
-                               rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
+                               rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid);
                        } else {
-                               rule_add_token(&rule_tmp, TK_A_GROUP, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_A_GROUP, op, value, NULL);
                        }
+                       rule_tmp.rule.rule.flags = 1;
                        valid = 1;
                        continue;
                }
@@ -1356,9 +1373,10 @@ static int add_rule(struct udev_rules *rules, char *line,
 
                        mode = strtol(value, &endptr, 8);
                        if (endptr[0] == '\0')
-                               rule_add_token(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
+                               rule_add_key(&rule_tmp, TK_A_MODE_ID, op, NULL, &mode);
                        else
-                               rule_add_token(&rule_tmp, TK_A_MODE, op, value, NULL);
+                               rule_add_key(&rule_tmp, TK_A_MODE, op, value, NULL);
+                       rule_tmp.rule.rule.flags = 1;
                        valid = 1;
                        continue;
                }
@@ -1368,42 +1386,42 @@ static int add_rule(struct udev_rules *rules, char *line,
 
                        if (strstr(value, "last_rule") != NULL) {
                                dbg(rules->udev, "last rule to be applied\n");
-                               rule_add_token(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL);
+                               rule_add_key(&rule_tmp, TK_A_LAST_RULE, 0, NULL, NULL);
                        }
                        if (strstr(value, "ignore_device") != NULL) {
                                dbg(rules->udev, "device should be ignored\n");
-                               rule_add_token(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL);
+                               rule_add_key(&rule_tmp, TK_A_IGNORE_DEVICE, 0, NULL, NULL);
                        }
                        if (strstr(value, "ignore_remove") != NULL) {
                                dbg(rules->udev, "remove event should be ignored\n");
-                               rule_add_token(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
+                               rule_add_key(&rule_tmp, TK_A_IGNORE_REMOVE, 0, NULL, NULL);
                        }
                        pos = strstr(value, "link_priority=");
                        if (pos != NULL) {
                                int prio = atoi(&pos[strlen("link_priority=")]);
 
-                               rule_add_token(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
+                               rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio);
                                dbg(rules->udev, "link priority=%i\n", prio);
                        }
                        pos = strstr(value, "event_timeout=");
                        if (pos != NULL) {
                                int tout = atoi(&pos[strlen("event_timeout=")]);
 
-                               rule_add_token(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
+                               rule_add_key(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout);
                                dbg(rules->udev, "event timout=%i\n", tout);
                        }
                        pos = strstr(value, "string_escape=");
                        if (pos != NULL) {
                                pos = &pos[strlen("string_escape=")];
                                if (strncmp(pos, "none", strlen("none")) == 0)
-                                       rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
+                                       rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL);
                                else if (strncmp(pos, "replace", strlen("replace")) == 0)
-                                       rule_add_token(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
+                                       rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL);
                        }
                        if (strstr(value, "all_partitions") != NULL) {
                                int num = DEFAULT_FAKE_PARTITIONS_COUNT;
 
-                               rule_add_token(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
+                               rule_add_key(&rule_tmp, TK_A_NUM_FAKE_PART, 0, NULL, &num);
                                dbg(rules->udev, "creation of partition nodes requested\n");
                        }
                        valid = 1;
@@ -1433,10 +1451,9 @@ invalid:
        return -1;
 }
 
-static int parse_file(struct udev_rules *rules, const char *filename)
+static int parse_file(struct udev_rules *rules, const char *filename, unsigned short filename_off)
 {
        FILE *f;
-       unsigned int filename_off;
        unsigned int first_token;
        char line[UTIL_LINE_SIZE];
        int line_nr = 0;
@@ -1448,7 +1465,6 @@ static int parse_file(struct udev_rules *rules, const char *filename)
        if (f == NULL)
                return -1;
 
-       filename_off = add_string(rules, filename);
        first_token = rules->token_cur;
 
        while(fgets(line, sizeof(line), f) != NULL) {
@@ -1553,7 +1569,6 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
 {
        struct udev_rules *rules;
        struct stat statbuf;
-       char filename[PATH_MAX];
        struct udev_list_node file_list;
        struct udev_list_entry *file_loop, *file_tmp;
        unsigned int prev_rule;
@@ -1587,6 +1602,7 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
                /* custom rules location for testing */
                add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules");
        } else {
+               char filename[PATH_MAX];
                struct udev_list_node sort_list;
                struct udev_list_entry *sort_loop, *sort_tmp;
 
@@ -1637,14 +1653,26 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names)
                }
        }
 
+       /* add all filenames to the string buffer */
+       udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) {
+               const char *filename = udev_list_entry_get_name(file_loop);
+               unsigned int filename_off;
+
+               filename_off = add_string(rules, filename);
+               /* the offset in the rule is limited to unsigned short */
+               if (filename_off < USHRT_MAX)
+                       udev_list_entry_set_flag(file_loop, filename_off);
+       }
+
        /* parse list of files */
        udev_list_entry_foreach_safe(file_loop, file_tmp, udev_list_get_entry(&file_list)) {
-               const char *file_name = udev_list_entry_get_name(file_loop);
+               const char *filename = udev_list_entry_get_name(file_loop);
+               unsigned int filename_off = udev_list_entry_get_flag(file_loop);
 
-               if (stat(file_name, &statbuf) == 0 && statbuf.st_size > 0)
-                       parse_file(rules, file_name);
+               if (stat(filename, &statbuf) == 0 && statbuf.st_size > 0)
+                       parse_file(rules, filename, filename_off);
                else
-                       info(udev, "can not read '%s'\n", file_name);
+                       info(udev, "can not read '%s'\n", filename);
                udev_list_entry_remove(file_loop);
        }
 
@@ -1726,21 +1754,26 @@ static int match_key(struct udev_rules *rules, struct token *token, const char *
                break;
        case GL_SPLIT:
                {
-                       char value[UTIL_PATH_SIZE];
+                       const char *split;
+                       size_t len;
 
-                       util_strlcpy(value, &rules->buf[token->key.value_off], sizeof(value));
-                       key_value = value;
-                       while (key_value != NULL) {
-                               pos = strchr(key_value, '|');
-                               if (pos != NULL) {
-                                       pos[0] = '\0';
-                                       pos = &pos[1];
-                               }
-                               dbg(rules->udev, "match %s '%s' <-> '%s'\n", token_str[token->type], key_value, val);
-                               match = (strcmp(key_value, val) == 0);
-                               if (match)
+                       split = &rules->buf[token->key.value_off];
+                       len = strlen(val);
+                       while (1) {
+                               const char *next;
+
+                               next = strchr(split, '|');
+                               if (next != NULL) {
+                                       size_t matchlen = (size_t)(next - split);
+
+                                       match = (matchlen == len && strncmp(split, val, matchlen) == 0);
+                                       if (match)
+                                               break;
+                               } else {
+                                       match = (strcmp(split, val) == 0);
                                        break;
-                               key_value = pos;
+                               }
+                               split = &next[1];
                        }
                        break;
                }
@@ -1786,23 +1819,26 @@ static int match_key(struct udev_rules *rules, struct token *token, const char *
 
 static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct udev_event *event, struct token *cur)
 {
-       char attr[UTIL_PATH_SIZE];
        const char *key_name = &rules->buf[cur->key.attr_off];
        const char *key_value = &rules->buf[cur->key.value_off];
-       char value[UTIL_NAME_SIZE] = "";
+       char value[UTIL_NAME_SIZE];
        size_t len;
 
-       util_strlcpy(attr, key_name, sizeof(attr));
-       util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
+       value[0] = '\0';
+       if (key_name[0] == '[') {
+               char attr[UTIL_PATH_SIZE];
+
+               util_strlcpy(attr, key_name, sizeof(attr));
+               util_resolve_subsys_kernel(event->udev, attr, value, sizeof(value), 1);
+       }
        if (value[0] == '\0') {
                const char *val;
 
                val = udev_device_get_sysattr_value(dev, key_name);
-               if (val != NULL)
-                       util_strlcpy(value, val, sizeof(value));
+               if (val == NULL)
+                       return -1;
+               util_strlcpy(value, val, sizeof(value));
        }
-       if (value[0]=='\0')
-               return -1;
 
        /* strip trailing whitespace of value, if not asked to match for it */
        len = strlen(key_value);
@@ -1825,15 +1861,21 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 {
        struct token *cur;
        struct token *rule;
+       enum escape_type esc = ESCAPE_UNSET;
+       int can_set_name;
 
        if (rules->tokens == NULL)
                return -1;
 
+       can_set_name = ((strcmp(udev_device_get_action(event->dev), "add") == 0 ||
+                        strcmp(udev_device_get_action(event->dev), "change") == 0) &&
+                       (major(udev_device_get_devnum(event->dev)) > 0 ||
+                        strcmp(udev_device_get_subsystem(event->dev), "net") == 0));
+
        /* loop through token list, match, run actions or forward to next rule */
        cur = &rules->tokens[0];
        rule = cur;
-       while (cur != NULL && cur->type != TK_END) {
-               enum escape_type esc = ESCAPE_UNSET;
+       while (1) {
                unsigned int idx;
 
                dump_token(rules, cur);
@@ -1841,6 +1883,9 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                case TK_RULE:
                        /* current rule */
                        rule = cur;
+                       /* possibly skip rules which want to set NAME, SYMLINK, OWNER, GROUP, MODE */
+                       if (!can_set_name && rule->rule.flags)
+                               ;//goto nomatch;
                        esc = ESCAPE_UNSET;
                        break;
                case TK_M_ACTION:
@@ -1928,7 +1973,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 
                                /* get whole sequence of parent matches */
                                next = cur;
-                               while (next->type < TK_M_PARENTS_MAX)
+                               while (next->type > TK_M_PARENTS_MIN && next->type < TK_M_PARENTS_MAX)
                                        next++;
 
                                /* loop over parents */
@@ -2107,6 +2152,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                util_strlcpy(owner,  &rules->buf[cur->key.value_off], sizeof(owner));
                                udev_event_apply_format(event, owner, sizeof(owner));
                                event->uid = util_lookup_user(event->udev, owner);
+                               info(event->udev, "OWNER %u %s:%u\n",
+                                    event->uid,
+                                    &rules->buf[rule->rule.filename_off],
+                                    rule->rule.filename_line);
                                break;
                        }
                case TK_A_GROUP:
@@ -2120,6 +2169,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
                                udev_event_apply_format(event, group, sizeof(group));
                                event->gid = util_lookup_group(event->udev, group);
+                               info(event->udev, "GROUP %u %s:%u\n",
+                                    event->gid,
+                                    &rules->buf[rule->rule.filename_off],
+                                    rule->rule.filename_line);
                                break;
                        }
                case TK_A_MODE:
@@ -2138,6 +2191,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                        err(event->udev, "invalide mode '%s' set default mode 0660\n", mode);
                                        event->mode = 0660;
                                }
+                               info(event->udev, "MODE %#o %s:%u\n",
+                                    event->mode,
+                                    &rules->buf[rule->rule.filename_off],
+                                    rule->rule.filename_line);
                                break;
                        }
                case TK_A_OWNER_ID:
@@ -2146,6 +2203,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                        if (cur->key.op == OP_ASSIGN_FINAL)
                                event->owner_final = 1;
                        event->uid = cur->key.uid;
+                       info(event->udev, "OWNER %u %s:%u\n",
+                            event->uid,
+                            &rules->buf[rule->rule.filename_off],
+                            rule->rule.filename_line);
                        break;
                case TK_A_GROUP_ID:
                        if (event->group_final)
@@ -2153,6 +2214,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                        if (cur->key.op == OP_ASSIGN_FINAL)
                                event->group_final = 1;
                        event->gid = cur->key.gid;
+                       info(event->udev, "GROUP %u %s:%u\n",
+                            event->gid,
+                            &rules->buf[rule->rule.filename_off],
+                            rule->rule.filename_line);
                        break;
                case TK_A_MODE_ID:
                        if (event->mode_final)
@@ -2160,6 +2225,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                        if (cur->key.op == OP_ASSIGN_FINAL)
                                event->mode_final = 1;
                        event->mode = cur->key.mode;
+                       info(event->udev, "MODE %#o %s:%u\n",
+                            event->mode,
+                            &rules->buf[rule->rule.filename_off],
+                            rule->rule.filename_line);
                        break;
                case TK_A_ENV:
                        {
@@ -2203,6 +2272,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                                info(event->udev, "%i character(s) replaced\n", count);
                                        free(event->name);
                                        event->name = strdup(name_str);
+                                       info(event->udev, "NAME '%s' %s:%u\n",
+                                            event->name,
+                                            &rules->buf[rule->rule.filename_off],
+                                            rule->rule.filename_line);
                                }
                                break;
                        }
@@ -2238,7 +2311,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                next = strchr(pos, ' ');
                                while (next) {
                                        next[0] = '\0';
-                                       info(event->udev, "add symlink '%s'\n", pos);
+                                       info(event->udev, "LINK '%s' %s:%u\n",
+                                            pos,
+                                            &rules->buf[rule->rule.filename_off],
+                                            rule->rule.filename_line);
                                        util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
                                        util_strlcat(filename, "/", sizeof(filename));
                                        util_strlcat(filename, pos, sizeof(filename));
@@ -2249,7 +2325,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                        next = strchr(pos, ' ');
                                }
                                if (pos[0] != '\0') {
-                                       info(event->udev, "add symlink '%s'\n", pos);
+                                       info(event->udev, "LINK '%s' %s:%u\n",
+                                            pos,
+                                            &rules->buf[rule->rule.filename_off],
+                                            rule->rule.filename_line);
                                        util_strlcpy(filename, udev_get_dev_path(event->udev), sizeof(filename));
                                        util_strlcat(filename, "/", sizeof(filename));
                                        util_strlcat(filename, pos, sizeof(filename));
@@ -2299,6 +2378,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 
                                if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
                                        udev_list_cleanup_entries(event->udev, &event->run_list);
+                               info(event->udev, "RUN '%s' %s:%u\n",
+                                    &rules->buf[cur->key.value_off],
+                                    &rules->buf[rule->rule.filename_off],
+                                    rule->rule.filename_line);
                                list_entry = udev_list_entry_add(event->udev, &event->run_list,
                                                                 &rules->buf[cur->key.value_off], NULL, 1, 0);
                                if (cur->key.ignore_error)
@@ -2309,11 +2392,12 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                        cur = &rules->tokens[cur->key.rule_goto];
                        continue;
                case TK_A_LAST_RULE:
-                       break;
+               case TK_END:
+                       return 0;
 
+               case TK_M_PARENTS_MIN:
                case TK_M_PARENTS_MAX:
                case TK_M_MAX:
-               case TK_END:
                case TK_UNSET:
                        err(rules->udev, "wrong type %u\n", cur->type);
                        goto nomatch;
@@ -2325,9 +2409,8 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                /* fast-forward to next rule */
                idx = rule->rule.next_rule;
                if (idx == 0)
-                       break;
+                       return 0;
                dbg(rules->udev, "forward to rule: %u\n", idx);
                cur = &rules->tokens[idx];
        }
-       return 0;
 }