diff options
Diffstat (limited to 'src/udev/udev-rules.c')
-rw-r--r-- | src/udev/udev-rules.c | 72 |
1 files changed, 50 insertions, 22 deletions
diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c index 55d7e30c02..1ec817872d 100644 --- a/src/udev/udev-rules.c +++ b/src/udev/udev-rules.c @@ -36,6 +36,13 @@ #define PREALLOC_STRBUF 32 * 1024 #define PREALLOC_TRIE 256 +/* configuration directories with last modification timestamp */ +static const char *rules_dirs[] = { + TEST_PREFIX UDEVLIBEXECDIR "/rules.d", + TEST_PREFIX "/run/udev/rules.d", + TEST_PREFIX SYSCONFDIR "/udev/rules.d", +}; + struct uid_gid { unsigned int name_off; union { @@ -58,6 +65,7 @@ struct trie_node { struct udev_rules { struct udev *udev; + unsigned long long dirs_ts_usec[ELEMENTSOF(rules_dirs)]; int resolve_names; /* every key in the rules file becomes a token */ @@ -664,7 +672,6 @@ static gid_t add_gid(struct udev_rules *rules, const char *group) static int import_property_from_string(struct udev_device *dev, char *line) { - struct udev *udev = udev_device_get_udev(dev); char *key; char *val; size_t len; @@ -724,7 +731,7 @@ static int import_property_from_string(struct udev_device *dev, char *line) log_debug("updating devpath from '%s' to '%s'\n", udev_device_get_devpath(dev), val); - util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), val, NULL); + util_strscpyl(syspath, sizeof(syspath), "/sys", val, NULL); udev_device_set_syspath(dev, syspath); } else { struct udev_list_entry *entry; @@ -807,7 +814,6 @@ static int import_parent_into_properties(struct udev_device *dev, const char *fi #define WAIT_LOOP_PER_SECOND 50 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]; struct stat stats; @@ -816,8 +822,7 @@ static int wait_for_file(struct udev_device *dev, const char *file, int timeout) /* a relative path is a device attribute */ devicepath[0] = '\0'; if (file[0] != '/') { - util_strscpyl(devicepath, sizeof(devicepath), - udev_get_sys_path(udev), udev_device_get_devpath(dev), NULL); + util_strscpyl(devicepath, sizeof(devicepath), udev_device_get_syspath(dev), NULL); util_strscpyl(filepath, sizeof(filepath), devicepath, "/", file, NULL); file = filepath; } @@ -1746,7 +1751,7 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) struct udev_list file_list; struct udev_list_entry *file_loop; struct token end_token; - char **s; + unsigned int i; rules = calloc(1, sizeof(struct udev_rules)); if (rules == NULL) @@ -1786,8 +1791,8 @@ struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names) memset(rules->trie_nodes, 0x00, sizeof(struct trie_node)); rules->trie_nodes_cur = 1; - for (udev_get_rules_path(udev, &s, NULL); *s != NULL; s++) - add_matching_files(udev, &file_list, *s, ".rules"); + for (i = 0; i < ELEMENTSOF(rules_dirs); i++) + add_matching_files(udev, &file_list, rules_dirs[i], ".rules"); /* add all filenames to the string buffer */ udev_list_entry_foreach(file_loop, udev_list_get_entry(&file_list)) { @@ -1884,6 +1889,33 @@ struct udev_rules *udev_rules_unref(struct udev_rules *rules) return NULL; } +bool udev_rules_check_timestamp(struct udev_rules *rules) +{ + unsigned int i; + bool changed = false; + + for (i = 0; i < ELEMENTSOF(rules_dirs); i++) { + struct stat stats; + + if (stat(rules_dirs[i], &stats) < 0) + continue; + + if (rules->dirs_ts_usec[i] == ts_usec(&stats.st_mtim)) + continue; + + /* first check */ + if (rules->dirs_ts_usec[i] != 0) { + log_debug("reload - timestamp of '%s' changed\n", rules_dirs[i]); + changed = true; + } + + /* update timestamp */ + rules->dirs_ts_usec[i] = ts_usec(&stats.st_mtim); + } + + return changed; +} + static int match_key(struct udev_rules *rules, struct token *token, const char *val) { char *key_value = &rules->buf[token->key.value_off]; @@ -2054,14 +2086,13 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event goto nomatch; break; case TK_M_DEVLINK: { - size_t devlen = strlen(udev_get_dev_path(event->udev))+1; struct udev_list_entry *list_entry; bool match = false; udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(event->dev)) { const char *devlink; - devlink = &udev_list_entry_get_name(list_entry)[devlen]; + devlink = udev_list_entry_get_name(list_entry) + strlen(TEST_PREFIX "/dev/"); if (match_key(rules, cur, devlink) == 0) { match = true; break; @@ -2534,15 +2565,12 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (count > 0) log_debug("%i character(s) replaced\n", count); } - if (major(udev_device_get_devnum(event->dev))) { - size_t devlen = strlen(udev_get_dev_path(event->udev))+1; - - if (strcmp(name_str, &udev_device_get_devnode(event->dev)[devlen]) != 0) { - log_error("NAME=\"%s\" ignored, kernel device nodes " - "can not be renamed; please fix it in %s:%u\n", name, - &rules->buf[rule->rule.filename_off], rule->rule.filename_line); - break; - } + if (major(udev_device_get_devnum(event->dev)) && + (strcmp(name_str, udev_device_get_devnode(event->dev) + strlen(TEST_PREFIX "/dev/")) != 0)) { + log_error("NAME=\"%s\" ignored, kernel device nodes " + "can not be renamed; please fix it in %s:%u\n", name, + &rules->buf[rule->rule.filename_off], rule->rule.filename_line); + break; } free(event->name); event->name = strdup(name_str); @@ -2583,7 +2611,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event next[0] = '\0'; log_debug("LINK '%s' %s:%u\n", pos, &rules->buf[rule->rule.filename_off], rule->rule.filename_line); - util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL); + util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/dev/", pos, NULL); udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique); while (isspace(next[1])) next++; @@ -2593,7 +2621,7 @@ int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event if (pos[0] != '\0') { log_debug("LINK '%s' %s:%u\n", pos, &rules->buf[rule->rule.filename_off], rule->rule.filename_line); - util_strscpyl(filename, sizeof(filename), udev_get_dev_path(event->udev), "/", pos, NULL); + util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/dev/", pos, NULL); udev_device_add_devlink(event->dev, filename, cur->key.devlink_unique); } break; @@ -2703,7 +2731,7 @@ void udev_rules_apply_static_dev_perms(struct udev_rules *rules) /* we assure, that the permissions tokens are sorted before the static token */ if (mode == 0 && uid == 0 && gid == 0) goto next; - util_strscpyl(filename, sizeof(filename), udev_get_dev_path(rules->udev), "/", + util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/dev/", &rules->buf[cur->key.value_off], NULL); if (stat(filename, &stats) != 0) goto next; |