chiark / gitweb /
distinguish "match" from "assign" by (op < OP_MATCH_MAX)
authorKay Sievers <kay.sievers@vrfy.org>
Fri, 24 Oct 2008 09:38:05 +0000 (11:38 +0200)
committerKay Sievers <kay.sievers@vrfy.org>
Fri, 24 Oct 2008 09:38:05 +0000 (11:38 +0200)
udev/udev-rules.c

index b19edc5..7a0d8a5 100644 (file)
 #define PREALLOC_STRBUF                        32 * 1024
 
 /* KEY=="", KEY!="", KEY+="", KEY="", KEY:="" */
-enum key_operation {
-       KEY_OP_UNSET,
-       KEY_OP_MATCH,
-       KEY_OP_NOMATCH,
-       KEY_OP_ADD,
-       KEY_OP_ASSIGN,
-       KEY_OP_ASSIGN_FINAL,
+enum operation_type {
+       OP_UNSET,
+
+       OP_MATCH,
+       OP_NOMATCH,
+       OP_MATCH_MAX,
+
+       OP_ADD,
+       OP_ASSIGN,
+       OP_ASSIGN_FINAL,
 };
 
 static const char *operation_str[] = {
-       [KEY_OP_MATCH] =        "match",
-       [KEY_OP_NOMATCH] =      "nomatch",
-       [KEY_OP_ADD] =          "add",
-       [KEY_OP_ASSIGN] =       "assign",
-       [KEY_OP_ASSIGN_FINAL] = "assign-final",
+       [OP_MATCH] =            "match",
+       [OP_NOMATCH] =          "nomatch",
+       [OP_MATCH_MAX] =        "match-max",
+
+       [OP_ADD] =              "add",
+       [OP_ASSIGN] =           "assign",
+       [OP_ASSIGN_FINAL] =     "assign-final",
 };
 
 /* tokens of a rule are sorted/handled in this order */
@@ -69,7 +74,7 @@ enum token_type {
        TK_M_SUBSYSTEMS,                /* val */
        TK_M_DRIVERS,                   /* val */
        TK_M_ATTRS,                     /* val, attr */
-       TK_PARENTS_MAX,
+       TK_M_PARENTS_MAX,
 
        TK_M_TEST,                      /* val, mode_t */
        TK_M_PROGRAM,                   /* val */
@@ -121,7 +126,7 @@ static const char *token_str[] = {
        [TK_M_SUBSYSTEMS] =             "M SUBSYSTEMS",
        [TK_M_DRIVERS] =                "M DRIVERS",
        [TK_M_ATTRS] =                  "M ATTRS",
-       [TK_PARENTS_MAX] =              "PARENTS_MAX",
+       [TK_M_PARENTS_MAX] =            "M PARENTS_MAX",
 
        [TK_M_TEST] =                   "M TEST",
        [TK_M_PROGRAM] =                "M PROGRAM",
@@ -163,7 +168,7 @@ struct token {
                        unsigned int filename_off;
                } rule;
                struct {
-                       enum key_operation op;
+                       enum operation_type op;
                        unsigned int value_off;
                        union {
                                unsigned int attr_off;
@@ -588,7 +593,7 @@ static int attr_subst_subdir(char *attr, size_t len)
        return found;
 }
 
-static int get_key(struct udev *udev, char **line, char **key, enum key_operation *op, char **value)
+static int get_key(struct udev *udev, char **line, char **key, enum operation_type *op, char **value)
 {
        char *linepos;
        char *temp;
@@ -630,19 +635,19 @@ static int get_key(struct udev *udev, char **line, char **key, enum key_operatio
 
        /* get operation type */
        if (linepos[0] == '=' && linepos[1] == '=') {
-               *op = KEY_OP_MATCH;
+               *op = OP_MATCH;
                linepos += 2;
        } else if (linepos[0] == '!' && linepos[1] == '=') {
-               *op = KEY_OP_NOMATCH;
+               *op = OP_NOMATCH;
                linepos += 2;
        } else if (linepos[0] == '+' && linepos[1] == '=') {
-               *op = KEY_OP_ADD;
+               *op = OP_ADD;
                linepos += 2;
        } else if (linepos[0] == '=') {
-               *op = KEY_OP_ASSIGN;
+               *op = OP_ASSIGN;
                linepos++;
        } else if (linepos[0] == ':' && linepos[1] == '=') {
-               *op = KEY_OP_ASSIGN_FINAL;
+               *op = OP_ASSIGN_FINAL;
                linepos += 2;
        } else
                return -1;
@@ -697,7 +702,7 @@ static char *get_key_attribute(struct udev *udev, char *str)
 }
 
 static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
-                         enum key_operation op,
+                         enum operation_type op,
                          const char *value, const void *data)
 {
        struct token *token = &rule_tmp->token[rule_tmp->token_cur];
@@ -772,7 +777,7 @@ 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_PARENTS_MAX:
+       case TK_M_PARENTS_MAX:
        case TK_END:
        case TK_UNDEF:
                err(rule_tmp->rules->udev, "wrong type %u\n", type);
@@ -792,7 +797,7 @@ static int rule_add_token(struct rule_tmp *rule_tmp, enum token_type type,
 static void dump_token(struct udev_rules *rules, struct token *token)
 {
        enum token_type type = token->type;
-       enum key_operation op = token->key.op;
+       enum operation_type op = token->key.op;
        const char *value = &rules->buf[token->key.value_off];
        const char *attr = &rules->buf[token->key.attr_off];
 
@@ -875,7 +880,7 @@ 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_PARENTS_MAX:
+       case TK_M_PARENTS_MAX:
        case TK_UNDEF:
                dbg(rules->udev, "unknown type %u\n", type);
                break;
@@ -952,13 +957,13 @@ static int add_rule(struct udev_rules *rules, char *line,
        while (1) {
                char *key;
                char *value;
-               enum key_operation op = KEY_OP_UNSET;
+               enum operation_type op = OP_UNSET;
 
                if (get_key(rules->udev, &linepos, &key, &op, &value) != 0)
                        break;
 
                if (strcasecmp(key, "ACTION") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid ACTION operation\n");
                                goto invalid;
                        }
@@ -968,7 +973,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "DEVPATH") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid DEVPATH operation\n");
                                goto invalid;
                        }
@@ -978,7 +983,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "KERNEL") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid KERNEL operation\n");
                                goto invalid;
                        }
@@ -988,7 +993,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "SUBSYSTEM") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid SUBSYSTEM operation\n");
                                goto invalid;
                        }
@@ -1007,7 +1012,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "DRIVER") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid DRIVER operation\n");
                                goto invalid;
                        }
@@ -1022,7 +1027,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                                err(rules->udev, "error parsing ATTR attribute\n");
                                goto invalid;
                        }
-                       if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+                       if (op < OP_MATCH_MAX) {
                                rule_add_token(&rule_tmp, TK_M_ATTR, op, value, attr);
                        } else {
                                rule_add_token(&rule_tmp, TK_A_ATTR, op, value, attr);
@@ -1033,7 +1038,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 
                if (strcasecmp(key, "KERNELS") == 0 ||
                    strcasecmp(key, "ID") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid KERNELS operation\n");
                                goto invalid;
                        }
@@ -1044,7 +1049,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 
                if (strcasecmp(key, "SUBSYSTEMS") == 0 ||
                    strcasecmp(key, "BUS") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid SUBSYSTEMS operation\n");
                                goto invalid;
                        }
@@ -1054,7 +1059,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "DRIVERS") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid DRIVERS operation\n");
                                goto invalid;
                        }
@@ -1065,7 +1070,7 @@ static int add_rule(struct udev_rules *rules, char *line,
 
                if (strncasecmp(key, "ATTRS{", sizeof("ATTRS{")-1) == 0 ||
                    strncasecmp(key, "SYSFS{", sizeof("SYSFS{")-1) == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid ATTRS operation\n");
                                goto invalid;
                        }
@@ -1093,7 +1098,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                        }
                        if (strncmp(attr, "PHYSDEV", 7) == 0)
                                physdev = 1;
-                       if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+                       if (op < OP_MATCH_MAX) {
                                if (rule_add_token(&rule_tmp, TK_M_ENV, op, value, attr) != 0)
                                        goto invalid;
                        } else {
@@ -1111,7 +1116,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "RESULT") == 0) {
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid RESULT operation\n");
                                goto invalid;
                        }
@@ -1171,7 +1176,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                if (strncasecmp(key, "TEST", sizeof("TEST")-1) == 0) {
                        mode_t mode = 0;
 
-                       if (op != KEY_OP_MATCH && op != KEY_OP_NOMATCH) {
+                       if (op > OP_MATCH_MAX) {
                                err(rules->udev, "invalid TEST operation\n");
                                goto invalid;
                        }
@@ -1216,7 +1221,7 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strncasecmp(key, "NAME", sizeof("NAME")-1) == 0) {
-                       if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH) {
+                       if (op < OP_MATCH_MAX) {
                                rule_add_token(&rule_tmp, TK_M_NAME, op, value, NULL);
                        } else {
                                if (value[0] == '\0')
@@ -1240,13 +1245,13 @@ static int add_rule(struct udev_rules *rules, char *line,
                }
 
                if (strcasecmp(key, "SYMLINK") == 0) {
-                       if (op == KEY_OP_MATCH || op == KEY_OP_NOMATCH)
-                                       rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
-                               else
-                                       rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
-                               valid = 1;
-                               continue;
-                       }
+                       if (op < OP_MATCH_MAX)
+                               rule_add_token(&rule_tmp, TK_M_DEVLINK, op, value, NULL);
+                       else
+                               rule_add_token(&rule_tmp, TK_A_DEVLINK, op, value, NULL);
+                       valid = 1;
+                       continue;
+               }
 
                if (strcasecmp(key, "OWNER") == 0) {
                        uid_t uid;
@@ -1672,11 +1677,11 @@ static int match_key(struct udev_rules *rules, struct token *token, const char *
                match = (fnmatch(key_value, val, 0) == 0);
        }
 
-       if (match && (token->key.op == KEY_OP_MATCH)) {
+       if (match && (token->key.op == OP_MATCH)) {
                dbg(rules->udev, "%s is true (matching value)\n", key_name);
                return 0;
        }
-       if (!match && (token->key.op == KEY_OP_NOMATCH)) {
+       if (!match && (token->key.op == OP_NOMATCH)) {
                dbg(rules->udev, "%s is true (non-matching value)\n", key_name);
                return 0;
        }
@@ -1811,7 +1816,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                util_strlcpy(filename, &rules->buf[cur->key.value_off], sizeof(filename));
                                udev_event_apply_format(event, filename, sizeof(filename));
                                found = (wait_for_file(event->dev, filename, 10) == 0);
-                               if (!found && (cur->key.op != KEY_OP_NOMATCH))
+                               if (!found && (cur->key.op != OP_NOMATCH))
                                        goto nomatch;
                                break;
                        }
@@ -1828,7 +1833,7 @@ 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_PARENTS_MAX)
+                               while (next->type < TK_M_PARENTS_MAX)
                                        next++;
 
                                /* loop over parents */
@@ -1902,9 +1907,9 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                        info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode,
                                             match ? "matches" : "does not match", cur->key.mode);
                                }
-                               if (match && cur->key.op == KEY_OP_NOMATCH)
+                               if (match && cur->key.op == OP_NOMATCH)
                                        goto nomatch;
-                               if (!match && cur->key.op == KEY_OP_MATCH)
+                               if (!match && cur->key.op == OP_MATCH)
                                        goto nomatch;
                                break;
                        }
@@ -1920,7 +1925,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                udev_event_apply_format(event, program, sizeof(program));
                                envp = udev_device_get_properties_envp(event->dev);
                                if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL) != 0) {
-                                       if (cur->key.op != KEY_OP_NOMATCH)
+                                       if (cur->key.op != OP_NOMATCH)
                                                goto nomatch;
                                } else {
                                        int count;
@@ -1933,7 +1938,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                        }
                                        event->program_result = strdup(result);
                                        dbg(event->udev, "storing result '%s'\n", event->program_result);
-                                       if (cur->key.op == KEY_OP_NOMATCH)
+                                       if (cur->key.op == OP_NOMATCH)
                                                goto nomatch;
                                }
                                break;
@@ -1945,7 +1950,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
                                udev_event_apply_format(event, import, sizeof(import));
                                if (import_file_into_properties(event->dev, import) != 0)
-                                       if (cur->key.op != KEY_OP_NOMATCH)
+                                       if (cur->key.op != OP_NOMATCH)
                                                goto nomatch;
                                break;
                        }
@@ -1956,7 +1961,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
                                udev_event_apply_format(event, import, sizeof(import));
                                if (import_program_into_properties(event->dev, import) != 0)
-                                       if (cur->key.op != KEY_OP_NOMATCH)
+                                       if (cur->key.op != OP_NOMATCH)
                                                goto nomatch;
                                break;
                        }
@@ -1967,7 +1972,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                util_strlcpy(import, &rules->buf[cur->key.value_off], sizeof(import));
                                udev_event_apply_format(event, import, sizeof(import));
                                if (import_parent_into_properties(event->dev, import) != 0)
-                                       if (cur->key.op != KEY_OP_NOMATCH)
+                                       if (cur->key.op != OP_NOMATCH)
                                                goto nomatch;
                                break;
                        }
@@ -2002,7 +2007,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 
                                if (event->owner_final)
                                        break;
-                               if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                               if (cur->key.op == OP_ASSIGN_FINAL)
                                        event->owner_final = 1;
                                util_strlcpy(owner,  &rules->buf[cur->key.value_off], sizeof(owner));
                                udev_event_apply_format(event, owner, sizeof(owner));
@@ -2015,7 +2020,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 
                                if (event->group_final)
                                        break;
-                               if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                               if (cur->key.op == OP_ASSIGN_FINAL)
                                        event->group_final = 1;
                                util_strlcpy(group, &rules->buf[cur->key.value_off], sizeof(group));
                                udev_event_apply_format(event, group, sizeof(group));
@@ -2029,7 +2034,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 
                                if (event->mode_final)
                                        break;
-                               if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                               if (cur->key.op == OP_ASSIGN_FINAL)
                                        event->mode_final = 1;
                                util_strlcpy(mode, &rules->buf[cur->key.value_off], sizeof(mode));
                                udev_event_apply_format(event, mode, sizeof(mode));
@@ -2043,21 +2048,21 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                case TK_A_OWNER_ID:
                        if (event->owner_final)
                                break;
-                       if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                       if (cur->key.op == OP_ASSIGN_FINAL)
                                event->owner_final = 1;
                        event->uid = cur->key.uid;
                        break;
                case TK_A_GROUP_ID:
                        if (event->group_final)
                                break;
-                       if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                       if (cur->key.op == OP_ASSIGN_FINAL)
                                event->group_final = 1;
                        event->gid = cur->key.gid;
                        break;
                case TK_A_MODE_ID:
                        if (event->mode_final)
                                break;
-                       if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                       if (cur->key.op == OP_ASSIGN_FINAL)
                                event->mode_final = 1;
                        event->mode = cur->key.mode;
                        break;
@@ -2088,7 +2093,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
 
                                if (event->name_final)
                                        break;
-                               if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                               if (cur->key.op == OP_ASSIGN_FINAL)
                                        event->name_final = 1;
                                if (name[0] == '\0') {
                                        free(event->name);
@@ -2117,9 +2122,9 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                                        break;
                                if (major(udev_device_get_devnum(event->dev)) == 0)
                                        break;
-                               if (cur->key.op == KEY_OP_ASSIGN_FINAL)
+                               if (cur->key.op == OP_ASSIGN_FINAL)
                                        event->devlink_final = 1;
-                               if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
+                               if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
                                        udev_device_cleanup_devlinks_list(event->dev);
 
                                /* allow  multiple symlinks separated by spaces */
@@ -2197,7 +2202,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                        {
                                struct udev_list_entry *list_entry;
 
-                               if (cur->key.op == KEY_OP_ASSIGN || cur->key.op == KEY_OP_ASSIGN_FINAL)
+                               if (cur->key.op == OP_ASSIGN || cur->key.op == OP_ASSIGN_FINAL)
                                        udev_list_cleanup_entries(event->udev, &event->run_list);
                                list_entry = udev_list_entry_add(event->udev, &event->run_list,
                                                                 &rules->buf[cur->key.value_off], NULL, 1, 0);
@@ -2211,7 +2216,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event
                case TK_A_LAST_RULE:
                        break;
 
-               case TK_PARENTS_MAX:
+               case TK_M_PARENTS_MAX:
                case TK_END:
                case TK_UNDEF:
                        err(rules->udev, "wrong type %u\n", cur->type);