X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev%2Fudev-rules.c;h=455da4234c7e49d41ddb126686a5fb42b3458573;hb=b929e83acc964cc1648f5f536f1a776f8d8add46;hp=665ad71e80f3289a1234930e1ab0b06fa4c48503;hpb=6270756cdca967adce6badaf1360d872a0907bf0;p=elogind.git diff --git a/udev/udev-rules.c b/udev/udev-rules.c index 665ad71e8..455da4234 100644 --- a/udev/udev-rules.c +++ b/udev/udev-rules.c @@ -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; @@ -275,7 +283,7 @@ static int add_string(struct udev_rules *rules, const char *str) buf = realloc(rules->buf, rules->buf_max + add); if (buf == NULL) return -1; - info(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add); + dbg(rules->udev, "extend buffer from %zu to %zu\n", rules->buf_max, rules->buf_max + add); rules->buf = buf; rules->buf_max += add; } @@ -302,7 +310,7 @@ static int add_token(struct udev_rules *rules, struct token *token) tokens = realloc(rules->tokens, (rules->token_max + add ) * sizeof(struct token)); if (tokens == NULL) return -1; - info(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add); + dbg(rules->udev, "extend tokens from %u to %u\n", rules->token_max, rules->token_max + add); rules->tokens = tokens; rules->token_max += add; } @@ -341,7 +349,7 @@ static uid_t add_uid(struct udev_rules *rules, const char *owner) uids = realloc(rules->uids, (rules->uids_max + add ) * sizeof(struct uid_gid)); if (uids == NULL) return uid; - info(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add); + dbg(rules->udev, "extend uids from %u to %u\n", rules->uids_max, rules->uids_max + add); rules->uids = uids; rules->uids_max += add; } @@ -384,7 +392,7 @@ static gid_t add_gid(struct udev_rules *rules, const char *group) gids = realloc(rules->gids, (rules->gids_max + add ) * sizeof(struct uid_gid)); if (gids == NULL) return gid; - info(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add); + dbg(rules->udev, "extend gids from %u to %u\n", rules->gids_max, rules->gids_max + add); rules->gids = gids; rules->gids_max += add; } @@ -453,7 +461,7 @@ static int import_property_from_string(struct udev_device *dev, char *line) val++; } - info(udev, "adding '%s'='%s'\n", key, val); + dbg(udev, "adding '%s'='%s'\n", key, val); /* handle device, renamed by external tool, returning new path */ if (strcmp(key, "DEVPATH") == 0) { @@ -729,9 +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; @@ -806,6 +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: @@ -841,7 +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++; @@ -868,11 +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: @@ -943,6 +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: @@ -1016,6 +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) { @@ -1031,7 +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; } @@ -1041,7 +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; } @@ -1051,7 +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; } @@ -1068,9 +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; } @@ -1080,7 +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; } @@ -1092,9 +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; @@ -1106,7 +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; } @@ -1117,7 +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; } @@ -1127,7 +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; } @@ -1149,7 +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; } @@ -1163,10 +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; @@ -1174,7 +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; } @@ -1184,7 +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; } @@ -1193,15 +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 */ @@ -1226,11 +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; } } @@ -1247,9 +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; @@ -1261,13 +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; } @@ -1279,40 +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; } @@ -1323,13 +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("$%", value[0]) == NULL) { uid = add_uid(rules, value); - rule_add_token(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); + rule_add_key(&rule_tmp, TK_A_OWNER_ID, op, NULL, &uid); } else { - rule_add_token(&rule_tmp, TK_A_OWNER, op, value, NULL); + rule_add_key(&rule_tmp, TK_A_OWNER, op, value, NULL); } + rule_tmp.rule.rule.flags = 1; valid = 1; continue; } @@ -1340,13 +1355,14 @@ static int add_rule(struct udev_rules *rules, char *line, gid = strtoul(value, &endptr, 10); if (endptr[0] == '\0') { - rule_add_token(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); + rule_add_key(&rule_tmp, TK_A_GROUP_ID, op, NULL, &gid); } else if (rules->resolve_names && strchr("$%", 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; } @@ -1357,9 +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; } @@ -1369,42 +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; @@ -1434,10 +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; @@ -1449,7 +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) { @@ -1554,7 +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; @@ -1581,13 +1595,14 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) /* offset 0 is always '\0' */ rules->buf[0] = '\0'; rules->buf_cur = 1; - info(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", - rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); + dbg(udev, "prealloc %zu bytes tokens (%u * %zu bytes), %zu bytes buffer\n", + rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); if (udev_get_rules_path(udev) != NULL) { /* 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; @@ -1638,14 +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); } @@ -1808,11 +1835,10 @@ static int match_attr(struct udev_rules *rules, struct udev_device *dev, struct 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); @@ -1836,10 +1862,16 @@ 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; @@ -1851,6 +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: @@ -1938,7 +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 */ @@ -2006,11 +2041,11 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event attr_subst_subdir(filename, sizeof(filename)); match = (stat(filename, &statbuf) == 0); - info(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n"); + dbg(event->udev, "'%s' %s", filename, match ? "exists\n" : "does not exist\n"); if (match && cur->key.mode > 0) { match = ((statbuf.st_mode & cur->key.mode) > 0); - info(event->udev, "'%s' has mode=%#o and %s %#o\n", filename, statbuf.st_mode, - match ? "matches" : "does not match", cur->key.mode); + dbg(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 == OP_NOMATCH) goto nomatch; @@ -2117,6 +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: @@ -2130,6 +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: @@ -2148,6 +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: @@ -2156,6 +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) @@ -2163,6 +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) @@ -2170,6 +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: { @@ -2213,6 +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; } @@ -2248,7 +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)); @@ -2259,7 +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)); @@ -2291,7 +2360,9 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event util_strlcpy(value, &rules->buf[cur->key.value_off], sizeof(value)); udev_event_apply_format(event, value, sizeof(value)); - info(event->udev, "writing '%s' to sysfs file '%s'\n", value, attr); + info(event->udev, "ATTR '%s' writing '%s' %s:%u\n", attr, value, + &rules->buf[rule->rule.filename_off], + rule->rule.filename_line); f = fopen(attr, "w"); if (f != NULL) { if (!event->test) @@ -2309,6 +2380,10 @@ 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) @@ -2320,8 +2395,9 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event continue; case TK_A_LAST_RULE: case TK_END: - break; + return 0; + case TK_M_PARENTS_MIN: case TK_M_PARENTS_MAX: case TK_M_MAX: case TK_UNSET: @@ -2335,9 +2411,8 @@ 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; }