X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev%2Fudev-rules.c;h=2ae30d81f6c9567d1cfb8adabcb5994097a25b3c;hp=230916a92e2ed6b20ea2629c01a7687fafe4694e;hb=c7c32e9c9835a0bdaee931f33ac0fc86a1e4c415;hpb=7d2b68b7345deb10e4a002b8327dae8ae943c1a6 diff --git a/udev/udev-rules.c b/udev/udev-rules.c index 230916a92..2ae30d81f 100644 --- a/udev/udev-rules.c +++ b/udev/udev-rules.c @@ -139,6 +139,7 @@ enum token_type { TK_M_PARENTS_MAX, TK_M_TEST, /* val, mode_t */ + TK_M_EVENT_TIMEOUT, /* int */ TK_M_PROGRAM, /* val */ TK_M_IMPORT_FILE, /* val */ TK_M_IMPORT_PROG, /* val */ @@ -150,6 +151,7 @@ enum token_type { TK_A_STRING_ESCAPE_NONE, TK_A_STRING_ESCAPE_REPLACE, + TK_A_DB_PERSIST, TK_A_INOTIFY_WATCH, /* int */ TK_A_DEVLINK_PRIO, /* int */ TK_A_OWNER, /* val */ @@ -163,7 +165,6 @@ enum token_type { TK_A_TAG, /* val */ TK_A_NAME, /* val */ TK_A_DEVLINK, /* val */ - TK_A_EVENT_TIMEOUT, /* int */ TK_A_ATTR, /* val, attr */ TK_A_RUN, /* val, bool */ TK_A_GOTO, /* size_t */ @@ -273,6 +274,7 @@ static const char *token_str(enum token_type type) [TK_M_PARENTS_MAX] = "M PARENTS_MAX", [TK_M_TEST] = "M TEST", + [TK_M_EVENT_TIMEOUT] = "M EVENT_TIMEOUT", [TK_M_PROGRAM] = "M PROGRAM", [TK_M_IMPORT_FILE] = "M IMPORT_FILE", [TK_M_IMPORT_PROG] = "M IMPORT_PROG", @@ -284,6 +286,7 @@ static const char *token_str(enum token_type type) [TK_A_STRING_ESCAPE_NONE] = "A STRING_ESCAPE_NONE", [TK_A_STRING_ESCAPE_REPLACE] = "A STRING_ESCAPE_REPLACE", + [TK_A_DB_PERSIST] = "A DB_PERSIST", [TK_A_INOTIFY_WATCH] = "A INOTIFY_WATCH", [TK_A_DEVLINK_PRIO] = "A DEVLINK_PRIO", [TK_A_OWNER] = "A OWNER", @@ -297,7 +300,6 @@ static const char *token_str(enum token_type type) [TK_A_TAG] = "A ENV", [TK_A_NAME] = "A NAME", [TK_A_DEVLINK] = "A DEVLINK", - [TK_A_EVENT_TIMEOUT] = "A EVENT_TIMEOUT", [TK_A_ATTR] = "A ATTR", [TK_A_RUN] = "A RUN", [TK_A_GOTO] = "A GOTO", @@ -370,6 +372,7 @@ static void dump_token(struct udev_rules *rules, struct token *token) break; case TK_A_STRING_ESCAPE_NONE: case TK_A_STRING_ESCAPE_REPLACE: + case TK_A_DB_PERSIST: dbg(rules->udev, "%s\n", token_str(type)); break; case TK_M_TEST: @@ -394,7 +397,7 @@ static void dump_token(struct udev_rules *rules, struct token *token) case TK_A_STATIC_NODE: dbg(rules->udev, "%s '%s'\n", token_str(type), value); break; - case TK_A_EVENT_TIMEOUT: + case TK_M_EVENT_TIMEOUT: dbg(rules->udev, "%s %u\n", token_str(type), token->key.event_timeout); break; case TK_A_GOTO: @@ -747,17 +750,18 @@ static int import_file_into_properties(struct udev_device *dev, const char *file return 0; } -static int import_program_into_properties(struct udev_device *dev, const char *program) +static int import_program_into_properties(struct udev_event *event, const char *program, const sigset_t *sigmask) { - struct udev *udev = udev_device_get_udev(dev); + struct udev_device *dev = event->dev; char **envp; - char result[4096]; - size_t reslen; + char result[UTIL_LINE_SIZE]; char *line; + int err; envp = udev_device_get_properties_envp(dev); - if (util_run_program(udev, program, envp, result, sizeof(result), &reslen, NULL, false) != 0) - return -1; + err = udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)); + if (err < 0) + return err; line = result; while (line != NULL) { @@ -1045,6 +1049,7 @@ static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, break; case TK_A_STRING_ESCAPE_NONE: case TK_A_STRING_ESCAPE_REPLACE: + case TK_A_DB_PERSIST: break; case TK_A_RUN: token->key.value_off = add_string(rule_tmp->rules, value); @@ -1066,7 +1071,7 @@ static int rule_add_key(struct rule_tmp *rule_tmp, enum token_type type, case TK_A_STATIC_NODE: token->key.value_off = add_string(rule_tmp->rules, value); break; - case TK_A_EVENT_TIMEOUT: + case TK_M_EVENT_TIMEOUT: token->key.event_timeout = *(int *)data; break; case TK_RULE: @@ -1569,44 +1574,53 @@ static int add_rule(struct udev_rules *rules, char *line, if (pos != NULL) { int prio = atoi(&pos[strlen("link_priority=")]); - rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, 0, NULL, &prio); + rule_add_key(&rule_tmp, TK_A_DEVLINK_PRIO, op, 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_key(&rule_tmp, TK_A_EVENT_TIMEOUT, 0, NULL, &tout); + rule_add_key(&rule_tmp, TK_M_EVENT_TIMEOUT, op, NULL, &tout); dbg(rules->udev, "event timeout=%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_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, 0, NULL, NULL); + rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_NONE, op, NULL, NULL); else if (strncmp(pos, "replace", strlen("replace")) == 0) - rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, 0, NULL, NULL); + rule_add_key(&rule_tmp, TK_A_STRING_ESCAPE_REPLACE, op, NULL, NULL); } + + pos = strstr(value, "db_persist"); + if (pos != NULL) + rule_add_key(&rule_tmp, TK_A_DB_PERSIST, op, NULL, NULL); + pos = strstr(value, "nowatch"); if (pos != NULL) { const int off = 0; - rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &off); + rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &off); dbg(rules->udev, "inotify watch of device disabled\n"); } else { pos = strstr(value, "watch"); if (pos != NULL) { const int on = 1; - rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, 0, NULL, &on); + rule_add_key(&rule_tmp, TK_A_INOTIFY_WATCH, op, NULL, &on); dbg(rules->udev, "inotify watch of device requested\n"); } } + pos = strstr(value, "static_node="); if (pos != NULL) { - rule_add_key(&rule_tmp, TK_A_STATIC_NODE, 0, &pos[strlen("static_node=")], NULL); + rule_add_key(&rule_tmp, TK_A_STATIC_NODE, op, &pos[strlen("static_node=")], NULL); rule_tmp.rule.rule.has_static_node = true; } + continue; } err(rules->udev, "unknown key '%s' in %s:%u\n", key, filename, lineno); @@ -1705,6 +1719,7 @@ static int parse_file(struct udev_rules *rules, const char *filename, unsigned s static int add_matching_files(struct udev *udev, struct udev_list_node *file_list, const char *dirname, const char *suffix) { DIR *dir; + struct dirent *dent; char filename[UTIL_PATH_SIZE]; dbg(udev, "open directory '%s'\n", dirname); @@ -1714,13 +1729,7 @@ static int add_matching_files(struct udev *udev, struct udev_list_node *file_lis return -1; } - for (;;) { - struct dirent *dent; - - dent = readdir(dir); - if (dent == NULL || dent->d_name[0] == '\0') - break; - + for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { if (dent->d_name[0] == '.') continue; @@ -1736,7 +1745,12 @@ static int add_matching_files(struct udev *udev, struct udev_list_node *file_lis } util_strscpyl(filename, sizeof(filename), dirname, "/", dent->d_name, NULL); dbg(udev, "put file '%s' into list\n", filename); - udev_list_entry_add(udev, file_list, filename, NULL, 1, 1); + /* + * the basename is the key, the filename the value + * identical basenames from different directories overwrite each other + * entries are sorted after basename + */ + udev_list_entry_add(udev, file_list, dent->d_name, filename, 1, 1); } closedir(dir); @@ -1746,28 +1760,31 @@ static int add_matching_files(struct udev *udev, struct udev_list_node *file_lis struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) { struct udev_rules *rules; - struct stat statbuf; struct udev_list_node file_list; - struct udev_list_entry *file_loop, *file_tmp; + struct udev_list_entry *file_loop; struct token end_token; - rules = malloc(sizeof(struct udev_rules)); + rules = calloc(1, sizeof(struct udev_rules)); if (rules == NULL) return NULL; - memset(rules, 0x00, sizeof(struct udev_rules)); rules->udev = udev; rules->resolve_names = resolve_names; udev_list_init(&file_list); /* init token array and string buffer */ rules->tokens = malloc(PREALLOC_TOKEN * sizeof(struct token)); - if (rules->tokens == NULL) + if (rules->tokens == NULL) { + free(rules); return NULL; + } rules->token_max = PREALLOC_TOKEN; rules->buf = malloc(PREALLOC_STRBUF); - if (rules->buf == NULL) + if (rules->buf == NULL) { + free(rules->tokens); + free(rules); return NULL; + } rules->buf_max = PREALLOC_STRBUF; /* offset 0 is always '\0' */ rules->buf[0] = '\0'; @@ -1776,73 +1793,37 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) rules->token_max * sizeof(struct token), rules->token_max, sizeof(struct token), rules->buf_max); rules->trie_nodes = malloc(PREALLOC_TRIE * sizeof(struct trie_node)); - if (rules->trie_nodes == NULL) + if (rules->trie_nodes == NULL) { + free(rules->buf); + free(rules->tokens); + free(rules); return NULL; + } rules->trie_nodes_max = PREALLOC_TRIE; /* offset 0 is the trie root, with an empty string */ memset(rules->trie_nodes, 0x00, sizeof(struct trie_node)); rules->trie_nodes_cur = 1; - 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; - - /* read user/custom rules */ - add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules"); - - /* read dynamic/temporary rules */ - util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev), "/.udev/rules.d", NULL); - udev_list_init(&sort_list); - add_matching_files(udev, &sort_list, filename, ".rules"); - - /* read default rules */ - add_matching_files(udev, &sort_list, LIBEXECDIR "/rules.d", ".rules"); + if (udev_get_rules_path(udev) == NULL) { + char filename[UTIL_PATH_SIZE]; - /* sort all rules files by basename into list of files */ - udev_list_entry_foreach_safe(sort_loop, sort_tmp, udev_list_get_entry(&sort_list)) { - const char *sort_name = udev_list_entry_get_name(sort_loop); - const char *sort_base = strrchr(sort_name, '/'); + /* /lib/udev -- default/package rules */ + add_matching_files(udev, &file_list, LIBEXECDIR "/rules.d", ".rules"); - if (sort_base == NULL) - continue; - /* sort entry into existing list */ - 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 *file_base = strrchr(file_name, '/'); + /* /etc/udev -- system-specific/user/admin rules */ + add_matching_files(udev, &file_list, SYSCONFDIR "/udev/rules.d", ".rules"); - if (file_base == NULL) - continue; - if (strcmp(file_base, sort_base) == 0) { - info(udev, "rule file basename '%s' already added, ignoring '%s'\n", - file_name, sort_name); - udev_list_entry_delete(sort_loop); - sort_loop = NULL; - break; - } - if (strcmp(file_base, sort_base) > 0) { - /* found later file, insert before */ - udev_list_entry_remove(sort_loop); - udev_list_entry_insert_before(sort_loop, file_loop); - sort_loop = NULL; - break; - } - } - /* current file already handled */ - if (sort_loop == NULL) - continue; - /* no later file, append to end of list */ - udev_list_entry_remove(sort_loop); - udev_list_entry_append(sort_loop, &file_list); - } + /* /run/udev -- throw-away/temporary rules */ + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/rules.d", NULL); + add_matching_files(udev, &file_list, filename, ".rules"); + } else { + /* custom rules files location for testing */ + add_matching_files(udev, &file_list, udev_get_rules_path(udev), ".rules"); } /* 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); + const char *filename = udev_list_entry_get_value(file_loop); unsigned int filename_off; filename_off = add_string(rules, filename); @@ -1851,17 +1832,27 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) udev_list_entry_set_flags(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 *filename = udev_list_entry_get_name(file_loop); + /* parse all rules files */ + udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) { + const char *filename = udev_list_entry_get_value(file_loop); unsigned int filename_off = udev_list_entry_get_flags(file_loop); + struct stat st; - if (stat(filename, &statbuf) == 0 && statbuf.st_size > 0) - parse_file(rules, filename, filename_off); - else - err(udev, "can not read '%s'\n", filename); - udev_list_entry_delete(file_loop); + if (stat(filename, &st) != 0) { + err(udev, "can not find '%s': %m\n", filename); + continue; + } + if (S_ISREG(st.st_mode) && st.st_size <= 0) { + info(udev, "ignore empty '%s'\n", filename); + continue; + } + if (S_ISCHR(st.st_mode)) { + info(udev, "ignore masked '%s'\n", filename); + continue; + } + parse_file(rules, filename, filename_off); } + udev_list_cleanup_entries(udev, &file_list); memset(&end_token, 0x00, sizeof(struct token)); end_token.type = TK_END; @@ -2060,7 +2051,7 @@ enum escape_type { ESCAPE_REPLACE, }; -int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event) +int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event, const sigset_t *sigmask) { struct token *cur; struct token *rule; @@ -2072,7 +2063,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event can_set_name = ((strcmp(udev_device_get_action(event->dev), "remove") != 0) && (major(udev_device_get_devnum(event->dev)) > 0 || - strcmp(udev_device_get_subsystem(event->dev), "net") == 0)); + udev_device_get_ifindex(event->dev) > 0)); /* loop through token list, match, run actions or forward to next rule */ cur = &rules->tokens[0]; @@ -2262,6 +2253,10 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event goto nomatch; break; } + case TK_M_EVENT_TIMEOUT: + info(event->udev, "OPTIONS event_timeout=%u\n", cur->key.event_timeout); + event->timeout_usec = cur->key.event_timeout * 1000 * 1000; + break; case TK_M_PROGRAM: { char program[UTIL_PATH_SIZE]; @@ -2276,7 +2271,8 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event program, &rules->buf[rule->rule.filename_off], rule->rule.filename_line); - if (util_run_program(event->udev, program, envp, result, sizeof(result), NULL, NULL, false) != 0) { + + if (udev_event_spawn(event, program, envp, sigmask, result, sizeof(result)) < 0) { if (cur->key.op != OP_NOMATCH) goto nomatch; } else { @@ -2314,7 +2310,8 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event import, &rules->buf[rule->rule.filename_off], rule->rule.filename_line); - if (import_program_into_properties(event->dev, import) != 0) + + if (import_program_into_properties(event, import, sigmask) != 0) if (cur->key.op != OP_NOMATCH) goto nomatch; break; @@ -2399,7 +2396,14 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event case TK_A_STRING_ESCAPE_REPLACE: esc = ESCAPE_REPLACE; break; + case TK_A_DB_PERSIST: + udev_device_set_db_persist(event->dev); + break; case TK_A_INOTIFY_WATCH: + if (event->inotify_watch_final) + break; + if (cur->key.op == OP_ASSIGN_FINAL) + event->inotify_watch_final = true; event->inotify_watch = cur->key.watch; break; case TK_A_DEVLINK_PRIO: @@ -2589,9 +2593,6 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event } } break; - case TK_A_EVENT_TIMEOUT: - udev_device_set_event_timeout(event->dev, cur->key.event_timeout); - break; case TK_A_ATTR: { const char *key_name = &rules->buf[cur->key.attr_off];