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libfwupdplugin/fu-common-linux.c
321 строка
8 KB
Richard Hughes
Port everything to FuPathStore
02 фев 2026, 18:53
02 фев 2026, 18:53
69859e1
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/* * Copyright 2017 Richard Hughes <richard@hughsie.com> * * SPDX-License-Identifier: LGPL-2.1-or-later */ #define G_LOG_DOMAIN "FuCommon" #include "config.h" #include <gio/gio.h> #include <unistd.h> #include "fu-common-private.h" #include "fu-kernel.h" #include "fu-path.h" #define UDISKS_DBUS_PATH "/org/freedesktop/UDisks2" #define UDISKS_DBUS_MANAGER_PATH "/org/freedesktop/UDisks2/Manager" #define UDISKS_DBUS_MANAGER_INTERFACE "org.freedesktop.UDisks2.Manager" #define UDISKS_METHOD_TIMEOUT 10000 /* ms */ /* required for udisks <= 2.1.7 */ static GPtrArray * fu_common_get_block_devices_legacy(GError **error) { g_autolist(GDBusObject) dbus_objects = NULL; g_autoptr(GDBusConnection) connection = NULL; g_autoptr(GDBusObjectManager) dbus_object_manager = NULL; g_autoptr(GPtrArray) devices = g_ptr_array_new_with_free_func((GDestroyNotify)g_object_unref); connection = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, error); if (connection == NULL) { g_prefix_error_literal(error, "failed to get system bus: "); return NULL; } dbus_object_manager = g_dbus_object_manager_client_new_sync(connection, G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_NONE, UDISKS_DBUS_SERVICE, UDISKS_DBUS_PATH, NULL, NULL, NULL, NULL, error); if (dbus_object_manager == NULL) return NULL; dbus_objects = g_dbus_object_manager_get_objects(dbus_object_manager); for (GList *l = dbus_objects; l != NULL; l = l->next) { GDBusObject *dbus_object = G_DBUS_OBJECT(l->data); const gchar *obj = g_dbus_object_get_object_path(dbus_object); g_autoptr(GDBusInterface) dbus_iface_blk = NULL; g_autoptr(GDBusProxy) proxy_blk = NULL; dbus_iface_blk = g_dbus_object_get_interface(dbus_object, UDISKS_DBUS_INTERFACE_BLOCK); if (dbus_iface_blk == NULL) { g_debug("skipping %s as has no block interface", obj); continue; } proxy_blk = g_dbus_proxy_new_sync(connection, G_DBUS_PROXY_FLAGS_NONE, NULL, UDISKS_DBUS_SERVICE, obj, UDISKS_DBUS_INTERFACE_BLOCK, NULL, error); if (proxy_blk == NULL) { g_prefix_error(error, "failed to initialize d-bus proxy for %s: ", obj); return NULL; } g_ptr_array_add(devices, g_steal_pointer(&proxy_blk)); } /* success */ return g_steal_pointer(&devices); } GPtrArray * fu_common_get_block_devices(GError **error) { GVariantBuilder builder; const gchar *obj; g_autoptr(GError) error_local = NULL; g_autoptr(GVariant) output = NULL; g_autoptr(GDBusProxy) proxy = NULL; g_autoptr(GPtrArray) devices = NULL; g_autoptr(GVariantIter) obj_iter = NULL; g_autoptr(GDBusConnection) connection = NULL; connection = g_bus_get_sync(G_BUS_TYPE_SYSTEM, NULL, error); if (connection == NULL) { g_prefix_error_literal(error, "failed to get system bus: "); return NULL; } proxy = g_dbus_proxy_new_sync(connection, G_DBUS_PROXY_FLAGS_NONE, NULL, UDISKS_DBUS_SERVICE, UDISKS_DBUS_MANAGER_PATH, UDISKS_DBUS_MANAGER_INTERFACE, NULL, error); if (proxy == NULL) { g_prefix_error(error, "failed to find %s: ", UDISKS_DBUS_SERVICE); return NULL; } devices = g_ptr_array_new_with_free_func((GDestroyNotify)g_object_unref); g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT); output = g_dbus_proxy_call_sync(proxy, "GetBlockDevices", g_variant_new("(a{sv})", &builder), G_DBUS_CALL_FLAGS_NONE, UDISKS_METHOD_TIMEOUT, NULL, &error_local); if (output == NULL) { if (g_error_matches(error_local, G_DBUS_ERROR, G_DBUS_ERROR_UNKNOWN_METHOD)) { g_debug("ignoring %s, trying fallback", error_local->message); return fu_common_get_block_devices_legacy(error); } g_dbus_error_strip_remote_error(error_local); g_propagate_prefixed_error(error, g_steal_pointer(&error_local), "failed to call %s.%s(): ", UDISKS_DBUS_MANAGER_INTERFACE, "GetBlockDevices"); return NULL; } g_variant_get(output, "(ao)", &obj_iter); while (g_variant_iter_next(obj_iter, "&o", &obj)) { g_autoptr(GDBusProxy) proxy_blk = NULL; proxy_blk = g_dbus_proxy_new_sync(connection, G_DBUS_PROXY_FLAGS_NONE, NULL, UDISKS_DBUS_SERVICE, obj, UDISKS_DBUS_INTERFACE_BLOCK, NULL, error); if (proxy_blk == NULL) { g_prefix_error(error, "failed to initialize d-bus proxy for %s: ", obj); return NULL; } g_ptr_array_add(devices, g_steal_pointer(&proxy_blk)); } return g_steal_pointer(&devices); } guint64 fu_common_get_memory_size_impl(void) { glong phys_pages = sysconf(_SC_PHYS_PAGES); glong page_size = sysconf(_SC_PAGE_SIZE); if (phys_pages > 0 && page_size > 0) return (guint64)phys_pages * (guint64)page_size; return 0; } gchar * fu_common_get_kernel_cmdline_impl(GError **error) { GHashTableIter iter; gpointer key; gpointer value; g_autoptr(GHashTable) hash = NULL; g_autoptr(GString) cmdline_safe = g_string_new(NULL); const gchar *ignore[] = { "", "apparmor", "audit", "auto", "bluetooth.disable_ertm", "boot", "BOOT_IMAGE", "console", "crashkernel", "cryptdevice", "cryptkey", "dm", "earlycon", "earlyprintk", "ether", "init", "initrd", "ip", "LANG", "loglevel", "luks.key", "luks.name", "luks.options", "luks.uuid", "mitigations", "mount.usr", "mount.usrflags", "mount.usrfstype", "netdev", "netroot", "nfsaddrs", "nfs.nfs4_unique_id", "nfsroot", "noplymouth", "nowatchdog", "ostree", "preempt", "quiet", "rd.dm.uuid", "rd.luks.allow-discards", "rd.luks.key", "rd.luks.name", "rd.luks.options", "rd.luks.uuid", "rd.lvm.lv", "rd.lvm.vg", "rd.md.uuid", "rd.systemd.mask", "rd.systemd.wants", "resume", "resumeflags", "rhgb", "ro", "root", "rootflags", "rootfstype", "roothash", "rw", "security", "selinux", "showopts", "splash", "swap", "systemd.machine_id", "systemd.mask", "systemd.show_status", "systemd.unit", "systemd.verity_root_data", "systemd.verity_root_hash", "systemd.wants", "udev.log_priority", "verbose", "vt.handoff", "zfs", "zswap.enabled", }; /* get a PII-safe kernel command line */ hash = fu_kernel_get_cmdline(error); if (hash == NULL) return NULL; for (guint i = 0; i < G_N_ELEMENTS(ignore); i++) g_hash_table_remove(hash, ignore[i]); g_hash_table_iter_init(&iter, hash); while (g_hash_table_iter_next(&iter, &key, &value)) { if (cmdline_safe->len > 0) g_string_append(cmdline_safe, " "); if (value == NULL) { g_string_append(cmdline_safe, (gchar *)key); continue; } g_string_append_printf(cmdline_safe, "%s=%s", (gchar *)key, (gchar *)value); } return g_string_free(g_steal_pointer(&cmdline_safe), FALSE); } gchar * fu_common_get_olson_timezone_id_impl(FuPathStore *pstore, GError **error) { const gchar *fn_localtime; g_autoptr(GFile) file_localtime = NULL; fn_localtime = fu_path_store_get_path(pstore, FU_PATH_KIND_LOCALTIME, error); if (fn_localtime == NULL) return NULL; /* use the last two sections of the symlink target */ g_debug("looking for timezone file %s", fn_localtime); file_localtime = g_file_new_for_path(fn_localtime); if (g_file_query_file_type(file_localtime, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL) == G_FILE_TYPE_SYMBOLIC_LINK) { const gchar *target; g_autoptr(GFileInfo) info = NULL; info = g_file_query_info(file_localtime, G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL, error); if (info == NULL) return NULL; target = g_file_info_get_symlink_target(info); if (target != NULL) { g_auto(GStrv) sections = g_strsplit(target, "/", -1); guint sections_len = g_strv_length(sections); if (sections_len < 2) { g_set_error(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "invalid symlink target: %s", target); return NULL; } return g_strdup_printf("%s/%s", sections[sections_len - 2], sections[sections_len - 1]); } } /* failed */ g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "no timezone or localtime is available"); return NULL; }