diff options
Diffstat (limited to 'src/udev/udevadm-hwdb.c')
| -rw-r--r-- | src/udev/udevadm-hwdb.c | 127 |
1 files changed, 75 insertions, 52 deletions
diff --git a/src/udev/udevadm-hwdb.c b/src/udev/udevadm-hwdb.c index 5587094e63..f620aa79dc 100644 --- a/src/udev/udevadm-hwdb.c +++ b/src/udev/udevadm-hwdb.c @@ -471,25 +471,27 @@ static int import_file(struct trie *trie, const char *filename) { static void help(void) { printf("Usage: udevadm hwdb [--create] [--help]\n" " --update update the hardware database\n" + " --test <modalias> query database and print result\n" " --help\n\n"); } static int adm_hwdb(struct udev *udev, int argc, char *argv[]) { static const struct option options[] = { { "update", no_argument, NULL, 'u' }, + { "test", required_argument, NULL, 't' }, { "help", no_argument, NULL, 'h' }, {} }; + const char *test = NULL; bool update = false; - struct trie *trie; - char **files, **f; + struct trie *trie = NULL; int err; int rc = EXIT_SUCCESS; for (;;) { int option; - option = getopt_long(argc, argv, "ch", options, NULL); + option = getopt_long(argc, argv, "ut:h", options, NULL); if (option == -1) break; @@ -497,71 +499,92 @@ static int adm_hwdb(struct udev *udev, int argc, char *argv[]) { case 'u': update = true; break; + case 't': + test = optarg; + break; case 'h': help(); return EXIT_SUCCESS; } } - if (!update) { + if (!update && !test) { help(); return EXIT_SUCCESS; } - trie = calloc(sizeof(struct trie), 1); - if (!trie) { - rc = EXIT_FAILURE; - goto out; - } + if (update) { + char **files, **f; - /* string store */ - trie->strings = strbuf_new(); - if (!trie->strings) { - rc = EXIT_FAILURE; - goto out; - } + trie = calloc(sizeof(struct trie), 1); + if (!trie) { + rc = EXIT_FAILURE; + goto out; + } - /* index */ - trie->root = calloc(sizeof(struct trie_node), 1); - if (!trie->root) { - rc = EXIT_FAILURE; - goto out; - } - trie->nodes_count++; + /* string store */ + trie->strings = strbuf_new(); + if (!trie->strings) { + rc = EXIT_FAILURE; + goto out; + } - err = conf_files_list_strv(&files, ".hwdb", (const char **)conf_file_dirs); - if (err < 0) { - log_error("failed to enumerate hwdb files: %s\n", strerror(-err)); - rc = EXIT_FAILURE; - goto out; - } - STRV_FOREACH(f, files) { - log_debug("reading file '%s'", *f); - import_file(trie, *f); + /* index */ + trie->root = calloc(sizeof(struct trie_node), 1); + if (!trie->root) { + rc = EXIT_FAILURE; + goto out; + } + trie->nodes_count++; + + err = conf_files_list_strv(&files, ".hwdb", (const char **)conf_file_dirs); + if (err < 0) { + log_error("failed to enumerate hwdb files: %s\n", strerror(-err)); + rc = EXIT_FAILURE; + goto out; + } + STRV_FOREACH(f, files) { + log_debug("reading file '%s'", *f); + import_file(trie, *f); + } + strv_free(files); + + strbuf_complete(trie->strings); + + log_debug("=== trie in-memory ===\n"); + log_debug("nodes: %8zu bytes (%8zu)\n", trie->nodes_count * sizeof(struct trie_node), trie->nodes_count); + log_debug("children arrays: %8zu bytes (%8zu)\n", trie->children_count * sizeof(struct trie_child_entry), trie->children_count); + log_debug("values arrays: %8zu bytes (%8zu)\n", trie->values_count * sizeof(struct trie_value_entry), trie->values_count); + log_debug("strings: %8zu bytes\n", trie->strings->len); + log_debug("strings incoming: %8zu bytes (%8zu)\n", trie->strings->in_len, trie->strings->in_count); + log_debug("strings dedup'ed: %8zu bytes (%8zu)\n", trie->strings->dedup_len, trie->strings->dedup_count); + + mkdir_parents("/etc/udev/hwdb.bin", 0755); + err = trie_store(trie, "/etc/udev/hwdb.bin"); + if (err < 0) { + log_error("Failure writing hardware database '%s': %s", "/etc/udev/hwdb.bin", strerror(-err)); + rc = EXIT_FAILURE; + } } - strv_free(files); - - strbuf_complete(trie->strings); - - log_debug("=== trie in-memory ===\n"); - log_debug("nodes: %8zu bytes (%8zu)\n", trie->nodes_count * sizeof(struct trie_node), trie->nodes_count); - log_debug("children arrays: %8zu bytes (%8zu)\n", trie->children_count * sizeof(struct trie_child_entry), trie->children_count); - log_debug("values arrays: %8zu bytes (%8zu)\n", trie->values_count * sizeof(struct trie_value_entry), trie->values_count); - log_debug("strings: %8zu bytes\n", trie->strings->len); - log_debug("strings incoming: %8zu bytes (%8zu)\n", trie->strings->in_len, trie->strings->in_count); - log_debug("strings dedup'ed: %8zu bytes (%8zu)\n", trie->strings->dedup_len, trie->strings->dedup_count); - - mkdir_parents("/etc/udev/hwdb.bin", 0755); - err = trie_store(trie, "/etc/udev/hwdb.bin"); - if (err < 0) { - log_error("Failure writing hardware database '%s': %s", "/etc/udev/hwdb.bin", strerror(-err)); - rc = EXIT_FAILURE; + + if (test) { + struct udev_hwdb *hwdb = udev_hwdb_new(udev); + + if (hwdb) { + struct udev_list_entry *entry; + + udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, test, 0)) + printf("%s=%s\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry)); + hwdb = udev_hwdb_unref(hwdb); + } } out: - if (trie->root) - trie_node_cleanup(trie->root); - strbuf_cleanup(trie->strings); - free(trie); + if (trie) { + if (trie->root) + trie_node_cleanup(trie->root); + strbuf_cleanup(trie->strings); + free(trie); + } return rc; } |