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-rw-r--r--src/machine/machined-dbus.c1617
1 files changed, 1617 insertions, 0 deletions
diff --git a/src/machine/machined-dbus.c b/src/machine/machined-dbus.c
new file mode 100644
index 0000000..494813e
--- /dev/null
+++ b/src/machine/machined-dbus.c
@@ -0,0 +1,1617 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "sd-id128.h"
+
+#include "alloc-util.h"
+#include "btrfs-util.h"
+#include "bus-common-errors.h"
+#include "bus-get-properties.h"
+#include "bus-locator.h"
+#include "bus-polkit.h"
+#include "cgroup-util.h"
+#include "errno-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "format-util.h"
+#include "hostname-util.h"
+#include "image-dbus.h"
+#include "io-util.h"
+#include "machine-dbus.h"
+#include "machine-image.h"
+#include "machine-pool.h"
+#include "machined.h"
+#include "missing_capability.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "stdio-util.h"
+#include "strv.h"
+#include "tmpfile-util.h"
+#include "unit-name.h"
+#include "user-util.h"
+
+static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_pool_path, "s", "/var/lib/machines");
+
+static int property_get_pool_usage(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ _cleanup_close_ int fd = -1;
+ uint64_t usage = (uint64_t) -1;
+
+ assert(bus);
+ assert(reply);
+
+ fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
+ if (fd >= 0) {
+ BtrfsQuotaInfo q;
+
+ if (btrfs_subvol_get_subtree_quota_fd(fd, 0, &q) >= 0)
+ usage = q.referenced;
+ }
+
+ return sd_bus_message_append(reply, "t", usage);
+}
+
+static int property_get_pool_limit(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ _cleanup_close_ int fd = -1;
+ uint64_t size = (uint64_t) -1;
+
+ assert(bus);
+ assert(reply);
+
+ fd = open("/var/lib/machines", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
+ if (fd >= 0) {
+ BtrfsQuotaInfo q;
+
+ if (btrfs_subvol_get_subtree_quota_fd(fd, 0, &q) >= 0)
+ size = q.referenced_max;
+ }
+
+ return sd_bus_message_append(reply, "t", size);
+}
+
+static int method_get_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *p = NULL;
+ Manager *m = userdata;
+ Machine *machine;
+ const char *name;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ r = sd_bus_message_read(message, "s", &name);
+ if (r < 0)
+ return r;
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
+
+ p = machine_bus_path(machine);
+ if (!p)
+ return -ENOMEM;
+
+ return sd_bus_reply_method_return(message, "o", p);
+}
+
+static int method_get_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *p = NULL;
+ _unused_ Manager *m = userdata;
+ const char *name;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ r = sd_bus_message_read(message, "s", &name);
+ if (r < 0)
+ return r;
+
+ r = image_find(IMAGE_MACHINE, name, NULL);
+ if (r == -ENOENT)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
+ if (r < 0)
+ return r;
+
+ p = image_bus_path(name);
+ if (!p)
+ return -ENOMEM;
+
+ return sd_bus_reply_method_return(message, "o", p);
+}
+
+static int method_get_machine_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *p = NULL;
+ Manager *m = userdata;
+ Machine *machine = NULL;
+ pid_t pid;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ assert_cc(sizeof(pid_t) == sizeof(uint32_t));
+
+ r = sd_bus_message_read(message, "u", &pid);
+ if (r < 0)
+ return r;
+
+ if (pid < 0)
+ return -EINVAL;
+
+ if (pid == 0) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+
+ r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_creds_get_pid(creds, &pid);
+ if (r < 0)
+ return r;
+ }
+
+ r = manager_get_machine_by_pid(m, pid, &machine);
+ if (r < 0)
+ return r;
+ if (!machine)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_MACHINE_FOR_PID, "PID "PID_FMT" does not belong to any known machine", pid);
+
+ p = machine_bus_path(machine);
+ if (!p)
+ return -ENOMEM;
+
+ return sd_bus_reply_method_return(message, "o", p);
+}
+
+static int method_list_machines(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ Manager *m = userdata;
+ Machine *machine;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ r = sd_bus_message_new_method_return(message, &reply);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ r = sd_bus_message_open_container(reply, 'a', "(ssso)");
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ HASHMAP_FOREACH(machine, m->machines) {
+ _cleanup_free_ char *p = NULL;
+
+ p = machine_bus_path(machine);
+ if (!p)
+ return -ENOMEM;
+
+ r = sd_bus_message_append(reply, "(ssso)",
+ machine->name,
+ strempty(machine_class_to_string(machine->class)),
+ machine->service,
+ p);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ return sd_bus_send(NULL, reply, NULL);
+}
+
+static int method_create_or_register_machine(Manager *manager, sd_bus_message *message, bool read_network, Machine **_m, sd_bus_error *error) {
+ const char *name, *service, *class, *root_directory;
+ const int32_t *netif = NULL;
+ MachineClass c;
+ uint32_t leader;
+ sd_id128_t id;
+ const void *v;
+ Machine *m;
+ size_t n, n_netif = 0;
+ int r;
+
+ assert(manager);
+ assert(message);
+ assert(_m);
+
+ r = sd_bus_message_read(message, "s", &name);
+ if (r < 0)
+ return r;
+ if (!machine_name_is_valid(name))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine name");
+
+ r = sd_bus_message_read_array(message, 'y', &v, &n);
+ if (r < 0)
+ return r;
+ if (n == 0)
+ id = SD_ID128_NULL;
+ else if (n == 16)
+ memcpy(&id, v, n);
+ else
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine ID parameter");
+
+ r = sd_bus_message_read(message, "ssus", &service, &class, &leader, &root_directory);
+ if (r < 0)
+ return r;
+
+ if (read_network) {
+ size_t i;
+
+ r = sd_bus_message_read_array(message, 'i', (const void**) &netif, &n_netif);
+ if (r < 0)
+ return r;
+
+ n_netif /= sizeof(int32_t);
+
+ for (i = 0; i < n_netif; i++) {
+ if (netif[i] <= 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid network interface index %i", netif[i]);
+ }
+ }
+
+ if (isempty(class))
+ c = _MACHINE_CLASS_INVALID;
+ else {
+ c = machine_class_from_string(class);
+ if (c < 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid machine class parameter");
+ }
+
+ if (leader == 1)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
+
+ if (!isempty(root_directory) && !path_is_absolute(root_directory))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Root directory must be empty or an absolute path");
+
+ if (leader == 0) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+
+ r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
+ if (r < 0)
+ return r;
+
+ assert_cc(sizeof(uint32_t) == sizeof(pid_t));
+
+ r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
+ if (r < 0)
+ return r;
+ }
+
+ if (hashmap_get(manager->machines, name))
+ return sd_bus_error_setf(error, BUS_ERROR_MACHINE_EXISTS, "Machine '%s' already exists", name);
+
+ r = manager_add_machine(manager, name, &m);
+ if (r < 0)
+ return r;
+
+ m->leader = leader;
+ m->class = c;
+ m->id = id;
+
+ if (!isempty(service)) {
+ m->service = strdup(service);
+ if (!m->service) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ if (!isempty(root_directory)) {
+ m->root_directory = strdup(root_directory);
+ if (!m->root_directory) {
+ r = -ENOMEM;
+ goto fail;
+ }
+ }
+
+ if (n_netif > 0) {
+ assert_cc(sizeof(int32_t) == sizeof(int));
+ m->netif = memdup(netif, sizeof(int32_t) * n_netif);
+ if (!m->netif) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ m->n_netif = n_netif;
+ }
+
+ *_m = m;
+
+ return 1;
+
+fail:
+ machine_add_to_gc_queue(m);
+ return r;
+}
+
+static int method_create_machine_internal(sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
+ Manager *manager = userdata;
+ Machine *m = NULL;
+ int r;
+
+ assert(message);
+ assert(manager);
+
+ r = method_create_or_register_machine(manager, message, read_network, &m, error);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_enter_container(message, 'a', "(sv)");
+ if (r < 0)
+ goto fail;
+
+ r = machine_start(m, message, error);
+ if (r < 0)
+ goto fail;
+
+ m->create_message = sd_bus_message_ref(message);
+ return 1;
+
+fail:
+ machine_add_to_gc_queue(m);
+ return r;
+}
+
+static int method_create_machine_with_network(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return method_create_machine_internal(message, true, userdata, error);
+}
+
+static int method_create_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return method_create_machine_internal(message, false, userdata, error);
+}
+
+static int method_register_machine_internal(sd_bus_message *message, bool read_network, void *userdata, sd_bus_error *error) {
+ Manager *manager = userdata;
+ _cleanup_free_ char *p = NULL;
+ Machine *m = NULL;
+ int r;
+
+ assert(message);
+ assert(manager);
+
+ r = method_create_or_register_machine(manager, message, read_network, &m, error);
+ if (r < 0)
+ return r;
+
+ r = cg_pid_get_unit(m->leader, &m->unit);
+ if (r < 0) {
+ r = sd_bus_error_set_errnof(error, r,
+ "Failed to determine unit of process "PID_FMT" : %m",
+ m->leader);
+ goto fail;
+ }
+
+ r = machine_start(m, NULL, error);
+ if (r < 0)
+ goto fail;
+
+ p = machine_bus_path(m);
+ if (!p) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ return sd_bus_reply_method_return(message, "o", p);
+
+fail:
+ machine_add_to_gc_queue(m);
+ return r;
+}
+
+static int method_register_machine_with_network(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return method_register_machine_internal(message, true, userdata, error);
+}
+
+static int method_register_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return method_register_machine_internal(message, false, userdata, error);
+}
+
+static int redirect_method_to_machine(sd_bus_message *message, Manager *m, sd_bus_error *error, sd_bus_message_handler_t method) {
+ Machine *machine;
+ const char *name;
+ int r;
+
+ assert(message);
+ assert(m);
+ assert(method);
+
+ r = sd_bus_message_read(message, "s", &name);
+ if (r < 0)
+ return sd_bus_error_set_errno(error, r);
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
+
+ return method(message, machine, error);
+}
+
+static int method_unregister_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_unregister);
+}
+
+static int method_terminate_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_terminate);
+}
+
+static int method_kill_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_kill);
+}
+
+static int method_get_machine_addresses(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_get_addresses);
+}
+
+static int method_get_machine_os_release(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_get_os_release);
+}
+
+static int method_list_images(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_hashmap_free_ Hashmap *images = NULL;
+ _unused_ Manager *m = userdata;
+ Image *image;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ images = hashmap_new(&image_hash_ops);
+ if (!images)
+ return -ENOMEM;
+
+ r = image_discover(IMAGE_MACHINE, images);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_new_method_return(message, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "(ssbttto)");
+ if (r < 0)
+ return r;
+
+ HASHMAP_FOREACH(image, images) {
+ _cleanup_free_ char *p = NULL;
+
+ p = image_bus_path(image->name);
+ if (!p)
+ return -ENOMEM;
+
+ r = sd_bus_message_append(reply, "(ssbttto)",
+ image->name,
+ image_type_to_string(image->type),
+ image->read_only,
+ image->crtime,
+ image->mtime,
+ image->usage,
+ p);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(NULL, reply, NULL);
+}
+
+static int method_open_machine_pty(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_pty);
+}
+
+static int method_open_machine_login(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_login);
+}
+
+static int method_open_machine_shell(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_shell);
+}
+
+static int method_bind_mount_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_bind_mount);
+}
+
+static int method_copy_machine(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_copy);
+}
+
+static int method_open_machine_root_directory(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_open_root_directory);
+}
+
+static int method_get_machine_uid_shift(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_machine(message, userdata, error, bus_machine_method_get_uid_shift);
+}
+
+static int redirect_method_to_image(sd_bus_message *message, Manager *m, sd_bus_error *error, sd_bus_message_handler_t method) {
+ _cleanup_(image_unrefp) Image* i = NULL;
+ const char *name;
+ int r;
+
+ assert(message);
+ assert(m);
+ assert(method);
+
+ r = sd_bus_message_read(message, "s", &name);
+ if (r < 0)
+ return r;
+
+ if (!image_name_is_valid(name))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", name);
+
+ r = image_find(IMAGE_MACHINE, name, &i);
+ if (r == -ENOENT)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_IMAGE, "No image '%s' known", name);
+ if (r < 0)
+ return r;
+
+ i->userdata = m;
+ return method(message, i, error);
+}
+
+static int method_remove_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_remove);
+}
+
+static int method_rename_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_rename);
+}
+
+static int method_clone_image(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_clone);
+}
+
+static int method_mark_image_read_only(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_mark_read_only);
+}
+
+static int method_get_image_hostname(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_get_hostname);
+}
+
+static int method_get_image_machine_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_get_machine_id);
+}
+
+static int method_get_image_machine_info(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_get_machine_info);
+}
+
+static int method_get_image_os_release(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_get_os_release);
+}
+
+static int clean_pool_done(Operation *operation, int ret, sd_bus_error *error) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ bool success;
+ size_t n;
+ int r;
+
+ assert(operation);
+ assert(operation->extra_fd >= 0);
+
+ if (lseek(operation->extra_fd, 0, SEEK_SET) == (off_t) -1)
+ return -errno;
+
+ f = take_fdopen(&operation->extra_fd, "r");
+ if (!f)
+ return -errno;
+
+ /* The resulting temporary file starts with a boolean value that indicates success or not. */
+ errno = 0;
+ n = fread(&success, 1, sizeof(success), f);
+ if (n != sizeof(success))
+ return ret < 0 ? ret : errno_or_else(EIO);
+
+ if (ret < 0) {
+ _cleanup_free_ char *name = NULL;
+
+ /* The clean-up operation failed. In this case the resulting temporary file should contain a boolean
+ * set to false followed by the name of the failed image. Let's try to read this and use it for the
+ * error message. If we can't read it, don't mind, and return the naked error. */
+
+ if (success) /* The resulting temporary file could not be updated, ignore it. */
+ return ret;
+
+ r = read_nul_string(f, LONG_LINE_MAX, &name);
+ if (r <= 0) /* Same here... */
+ return ret;
+
+ return sd_bus_error_set_errnof(error, ret, "Failed to remove image %s: %m", name);
+ }
+
+ assert(success);
+
+ r = sd_bus_message_new_method_return(operation->message, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_open_container(reply, 'a', "(st)");
+ if (r < 0)
+ return r;
+
+ /* On success the resulting temporary file will contain a list of image names that were removed followed by
+ * their size on disk. Let's read that and turn it into a bus message. */
+ for (;;) {
+ _cleanup_free_ char *name = NULL;
+ uint64_t size;
+
+ r = read_nul_string(f, LONG_LINE_MAX, &name);
+ if (r < 0)
+ return r;
+ if (r == 0) /* reached the end */
+ break;
+
+ errno = 0;
+ n = fread(&size, 1, sizeof(size), f);
+ if (n != sizeof(size))
+ return errno_or_else(EIO);
+
+ r = sd_bus_message_append(reply, "(st)", name, size);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_close_container(reply);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(NULL, reply, NULL);
+}
+
+static int method_clean_pool(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ enum {
+ REMOVE_ALL,
+ REMOVE_HIDDEN,
+ } mode;
+
+ _cleanup_close_pair_ int errno_pipe_fd[2] = { -1, -1 };
+ _cleanup_close_ int result_fd = -1;
+ Manager *m = userdata;
+ Operation *operation;
+ const char *mm;
+ pid_t child;
+ int r;
+
+ assert(message);
+
+ if (m->n_operations >= OPERATIONS_MAX)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing operations.");
+
+ r = sd_bus_message_read(message, "s", &mm);
+ if (r < 0)
+ return r;
+
+ if (streq(mm, "all"))
+ mode = REMOVE_ALL;
+ else if (streq(mm, "hidden"))
+ mode = REMOVE_HIDDEN;
+ else
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown mode '%s'.", mm);
+
+ r = bus_verify_polkit_async(
+ message,
+ CAP_SYS_ADMIN,
+ "org.freedesktop.machine1.manage-machines",
+ NULL,
+ false,
+ UID_INVALID,
+ &m->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* Will call us back */
+
+ if (pipe2(errno_pipe_fd, O_CLOEXEC|O_NONBLOCK) < 0)
+ return sd_bus_error_set_errnof(error, errno, "Failed to create pipe: %m");
+
+ /* Create a temporary file we can dump information about deleted images into. We use a temporary file for this
+ * instead of a pipe or so, since this might grow quit large in theory and we don't want to process this
+ * continuously */
+ result_fd = open_tmpfile_unlinkable(NULL, O_RDWR|O_CLOEXEC);
+ if (result_fd < 0)
+ return -errno;
+
+ /* This might be a slow operation, run it asynchronously in a background process */
+ r = safe_fork("(sd-clean)", FORK_RESET_SIGNALS, &child);
+ if (r < 0)
+ return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m");
+ if (r == 0) {
+ _cleanup_hashmap_free_ Hashmap *images = NULL;
+ bool success = true;
+ Image *image;
+ ssize_t l;
+
+ errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]);
+
+ images = hashmap_new(&image_hash_ops);
+ if (!images) {
+ r = -ENOMEM;
+ goto child_fail;
+ }
+
+ r = image_discover(IMAGE_MACHINE, images);
+ if (r < 0)
+ goto child_fail;
+
+ l = write(result_fd, &success, sizeof(success));
+ if (l < 0) {
+ r = -errno;
+ goto child_fail;
+ }
+
+ HASHMAP_FOREACH(image, images) {
+
+ /* We can't remove vendor images (i.e. those in /usr) */
+ if (IMAGE_IS_VENDOR(image))
+ continue;
+
+ if (IMAGE_IS_HOST(image))
+ continue;
+
+ if (mode == REMOVE_HIDDEN && !IMAGE_IS_HIDDEN(image))
+ continue;
+
+ r = image_remove(image);
+ if (r == -EBUSY) /* keep images that are currently being used. */
+ continue;
+ if (r < 0) {
+ /* If the operation failed, let's override everything we wrote, and instead write there at which image we failed. */
+ success = false;
+ (void) ftruncate(result_fd, 0);
+ (void) lseek(result_fd, 0, SEEK_SET);
+ (void) write(result_fd, &success, sizeof(success));
+ (void) write(result_fd, image->name, strlen(image->name)+1);
+ goto child_fail;
+ }
+
+ l = write(result_fd, image->name, strlen(image->name)+1);
+ if (l < 0) {
+ r = -errno;
+ goto child_fail;
+ }
+
+ l = write(result_fd, &image->usage_exclusive, sizeof(image->usage_exclusive));
+ if (l < 0) {
+ r = -errno;
+ goto child_fail;
+ }
+ }
+
+ result_fd = safe_close(result_fd);
+ _exit(EXIT_SUCCESS);
+
+ child_fail:
+ (void) write(errno_pipe_fd[1], &r, sizeof(r));
+ _exit(EXIT_FAILURE);
+ }
+
+ errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]);
+
+ /* The clean-up might take a while, hence install a watch on the child and return */
+
+ r = operation_new(m, NULL, child, message, errno_pipe_fd[0], &operation);
+ if (r < 0) {
+ (void) sigkill_wait(child);
+ return r;
+ }
+
+ operation->extra_fd = result_fd;
+ operation->done = clean_pool_done;
+
+ result_fd = -1;
+ errno_pipe_fd[0] = -1;
+
+ return 1;
+}
+
+static int method_set_pool_limit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = userdata;
+ uint64_t limit;
+ int r;
+
+ assert(message);
+
+ r = sd_bus_message_read(message, "t", &limit);
+ if (r < 0)
+ return r;
+ if (!FILE_SIZE_VALID_OR_INFINITY(limit))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New limit out of range");
+
+ r = bus_verify_polkit_async(
+ message,
+ CAP_SYS_ADMIN,
+ "org.freedesktop.machine1.manage-machines",
+ NULL,
+ false,
+ UID_INVALID,
+ &m->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* Will call us back */
+
+ /* Set up the machine directory if necessary */
+ r = setup_machine_directory(error);
+ if (r < 0)
+ return r;
+
+ (void) btrfs_qgroup_set_limit("/var/lib/machines", 0, limit);
+
+ r = btrfs_subvol_set_subtree_quota_limit("/var/lib/machines", 0, limit);
+ if (r == -ENOTTY)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Quota is only supported on btrfs.");
+ if (r < 0)
+ return sd_bus_error_set_errnof(error, r, "Failed to adjust quota limit: %m");
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
+static int method_set_image_limit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ return redirect_method_to_image(message, userdata, error, bus_image_method_set_limit);
+}
+
+static int method_map_from_machine_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = userdata;
+ const char *name;
+ Machine *machine;
+ uint32_t uid;
+ uid_t converted;
+ int r;
+
+ r = sd_bus_message_read(message, "su", &name, &uid);
+ if (r < 0)
+ return r;
+
+ if (!uid_is_valid(uid))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
+
+ if (machine->class != MACHINE_CONTAINER)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Not supported for non-container machines.");
+
+ r = machine_translate_uid(machine, uid, &converted);
+ if (r == -ESRCH)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "Machine '%s' has no matching user mappings.", name);
+ if (r < 0)
+ return r;
+
+ return sd_bus_reply_method_return(message, "u", (uint32_t) converted);
+}
+
+static int method_map_to_machine_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *o = NULL;
+ Manager *m = userdata;
+ Machine *machine;
+ uid_t uid, converted;
+ int r;
+
+ r = sd_bus_message_read(message, "u", &uid);
+ if (r < 0)
+ return r;
+ if (!uid_is_valid(uid))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid user ID " UID_FMT, uid);
+ if (uid < 0x10000)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "User " UID_FMT " belongs to host UID range", uid);
+
+ r = manager_find_machine_for_uid(m, uid, &machine, &converted);
+ if (r < 0)
+ return r;
+ if (!r)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "No matching user mapping for " UID_FMT ".", uid);
+
+ o = machine_bus_path(machine);
+ if (!o)
+ return -ENOMEM;
+
+ return sd_bus_reply_method_return(message, "sou", machine->name, o, (uint32_t) converted);
+}
+
+static int method_map_from_machine_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = userdata;
+ const char *name;
+ Machine *machine;
+ gid_t converted;
+ uint32_t gid;
+ int r;
+
+ r = sd_bus_message_read(message, "su", &name, &gid);
+ if (r < 0)
+ return r;
+
+ if (!gid_is_valid(gid))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_MACHINE, "No machine '%s' known", name);
+
+ if (machine->class != MACHINE_CONTAINER)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Not supported for non-container machines.");
+
+ r = machine_translate_gid(machine, gid, &converted);
+ if (r == -ESRCH)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER_MAPPING, "Machine '%s' has no matching group mappings.", name);
+ if (r < 0)
+ return r;
+
+ return sd_bus_reply_method_return(message, "u", (uint32_t) converted);
+}
+
+static int method_map_to_machine_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *o = NULL;
+ Manager *m = userdata;
+ Machine *machine;
+ gid_t gid, converted;
+ int r;
+
+ r = sd_bus_message_read(message, "u", &gid);
+ if (r < 0)
+ return r;
+ if (!gid_is_valid(gid))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid group ID " GID_FMT, gid);
+ if (gid < 0x10000)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_GROUP_MAPPING, "Group " GID_FMT " belongs to host GID range", gid);
+
+ r = manager_find_machine_for_gid(m, gid, &machine, &converted);
+ if (r < 0)
+ return r;
+ if (!r)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_GROUP_MAPPING, "No matching group mapping for " GID_FMT ".", gid);
+
+ o = machine_bus_path(machine);
+ if (!o)
+ return -ENOMEM;
+
+ return sd_bus_reply_method_return(message, "sou", machine->name, o, (uint32_t) converted);
+}
+
+const sd_bus_vtable manager_vtable[] = {
+ SD_BUS_VTABLE_START(0),
+
+ SD_BUS_PROPERTY("PoolPath", "s", property_get_pool_path, 0, 0),
+ SD_BUS_PROPERTY("PoolUsage", "t", property_get_pool_usage, 0, 0),
+ SD_BUS_PROPERTY("PoolLimit", "t", property_get_pool_limit, 0, 0),
+
+ SD_BUS_METHOD_WITH_NAMES("GetMachine",
+ "s",
+ SD_BUS_PARAM(name),
+ "o",
+ SD_BUS_PARAM(machine),
+ method_get_machine,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetImage",
+ "s",
+ SD_BUS_PARAM(name),
+ "o",
+ SD_BUS_PARAM(image),
+ method_get_image,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetMachineByPID",
+ "u",
+ SD_BUS_PARAM(pid),
+ "o",
+ SD_BUS_PARAM(machine),
+ method_get_machine_by_pid,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("ListMachines",
+ NULL,,
+ "a(ssso)",
+ SD_BUS_PARAM(machines),
+ method_list_machines,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("ListImages",
+ NULL,,
+ "a(ssbttto)",
+ SD_BUS_PARAM(images),
+ method_list_images,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("CreateMachine",
+ "sayssusa(sv)",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(id)
+ SD_BUS_PARAM(service)
+ SD_BUS_PARAM(class)
+ SD_BUS_PARAM(leader)
+ SD_BUS_PARAM(root_directory)
+ SD_BUS_PARAM(scope_properties),
+ "o",
+ SD_BUS_PARAM(path),
+ method_create_machine, 0),
+ SD_BUS_METHOD_WITH_NAMES("CreateMachineWithNetwork",
+ "sayssusaia(sv)",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(id)
+ SD_BUS_PARAM(service)
+ SD_BUS_PARAM(class)
+ SD_BUS_PARAM(leader)
+ SD_BUS_PARAM(root_directory)
+ SD_BUS_PARAM(ifindices)
+ SD_BUS_PARAM(scope_properties),
+ "o",
+ SD_BUS_PARAM(path),
+ method_create_machine_with_network, 0),
+ SD_BUS_METHOD_WITH_NAMES("RegisterMachine",
+ "sayssus",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(id)
+ SD_BUS_PARAM(service)
+ SD_BUS_PARAM(class)
+ SD_BUS_PARAM(leader)
+ SD_BUS_PARAM(root_directory),
+ "o",
+ SD_BUS_PARAM(path),
+ method_register_machine, 0),
+ SD_BUS_METHOD_WITH_NAMES("RegisterMachineWithNetwork",
+ "sayssusai",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(id)
+ SD_BUS_PARAM(service)
+ SD_BUS_PARAM(class)
+ SD_BUS_PARAM(leader)
+ SD_BUS_PARAM(root_directory)
+ SD_BUS_PARAM(ifindices),
+ "o",
+ SD_BUS_PARAM(path),
+ method_register_machine_with_network, 0),
+ SD_BUS_METHOD_WITH_NAMES("UnregisterMachine",
+ "s",
+ SD_BUS_PARAM(name),
+ NULL,,
+ method_unregister_machine,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("TerminateMachine",
+ "s",
+ SD_BUS_PARAM(id),
+ NULL,,
+ method_terminate_machine,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("KillMachine",
+ "ssi",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(who)
+ SD_BUS_PARAM(signal),
+ NULL,,
+ method_kill_machine,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetMachineAddresses",
+ "s",
+ SD_BUS_PARAM(name),
+ "a(iay)",
+ SD_BUS_PARAM(addresses),
+ method_get_machine_addresses,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetMachineOSRelease",
+ "s",
+ SD_BUS_PARAM(name),
+ "a{ss}",
+ SD_BUS_PARAM(fields),
+ method_get_machine_os_release,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("OpenMachinePTY",
+ "s",
+ SD_BUS_PARAM(name),
+ "hs",
+ SD_BUS_PARAM(pty)
+ SD_BUS_PARAM(pty_path),
+ method_open_machine_pty,
+ 0),
+ SD_BUS_METHOD_WITH_NAMES("OpenMachineLogin",
+ "s",
+ SD_BUS_PARAM(name),
+ "hs",
+ SD_BUS_PARAM(pty)
+ SD_BUS_PARAM(pty_path),
+ method_open_machine_login,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("OpenMachineShell",
+ "sssasas",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(user)
+ SD_BUS_PARAM(path)
+ SD_BUS_PARAM(args)
+ SD_BUS_PARAM(environment),
+ "hs",
+ SD_BUS_PARAM(pty)
+ SD_BUS_PARAM(pty_path),
+ method_open_machine_shell,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("BindMountMachine",
+ "sssbb",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(source)
+ SD_BUS_PARAM(destination)
+ SD_BUS_PARAM(read_only)
+ SD_BUS_PARAM(mkdir),
+ NULL,,
+ method_bind_mount_machine,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("CopyFromMachine",
+ "sss",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(source)
+ SD_BUS_PARAM(destination),
+ NULL,,
+ method_copy_machine,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("CopyToMachine",
+ "sss",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(source)
+ SD_BUS_PARAM(destination),
+ NULL,,
+ method_copy_machine,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("OpenMachineRootDirectory",
+ "s",
+ SD_BUS_PARAM(name),
+ "h",
+ SD_BUS_PARAM(fd),
+ method_open_machine_root_directory,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetMachineUIDShift",
+ "s",
+ SD_BUS_PARAM(name),
+ "u",
+ SD_BUS_PARAM(shift),
+ method_get_machine_uid_shift,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("RemoveImage",
+ "s",
+ SD_BUS_PARAM(name),
+ NULL,,
+ method_remove_image,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("RenameImage",
+ "ss",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(new_name),
+ NULL,,
+ method_rename_image,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("CloneImage",
+ "ssb",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(new_name)
+ SD_BUS_PARAM(read_only),
+ NULL,,
+ method_clone_image,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("MarkImageReadOnly",
+ "sb",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(read_only),
+ NULL,,
+ method_mark_image_read_only,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetImageHostname",
+ "s",
+ SD_BUS_PARAM(name),
+ "s",
+ SD_BUS_PARAM(hostname),
+ method_get_image_hostname,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetImageMachineID",
+ "s",
+ SD_BUS_PARAM(name),
+ "ay",
+ SD_BUS_PARAM(id),
+ method_get_image_machine_id,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetImageMachineInfo",
+ "s",
+ SD_BUS_PARAM(name),
+ "a{ss}",
+ SD_BUS_PARAM(machine_info),
+ method_get_image_machine_info,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("GetImageOSRelease",
+ "s",
+ SD_BUS_PARAM(name),
+ "a{ss}",
+ SD_BUS_PARAM(os_release),
+ method_get_image_os_release,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("SetPoolLimit",
+ "t",
+ SD_BUS_PARAM(size),
+ NULL,,
+ method_set_pool_limit,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("SetImageLimit",
+ "st",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(size),
+ NULL,,
+ method_set_image_limit,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("CleanPool",
+ "s",
+ SD_BUS_PARAM(mode),
+ "a(st)",
+ SD_BUS_PARAM(images),
+ method_clean_pool,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("MapFromMachineUser",
+ "su",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(uid_inner),
+ "u",
+ SD_BUS_PARAM(uid_outer),
+ method_map_from_machine_user,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("MapToMachineUser",
+ "u",
+ SD_BUS_PARAM(uid_outer),
+ "sou",
+ SD_BUS_PARAM(machine_name)
+ SD_BUS_PARAM(machine_path)
+ SD_BUS_PARAM(uid_inner),
+ method_map_to_machine_user,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("MapFromMachineGroup",
+ "su",
+ SD_BUS_PARAM(name)
+ SD_BUS_PARAM(gid_inner),
+ "u",
+ SD_BUS_PARAM(gid_outer),
+ method_map_from_machine_group,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD_WITH_NAMES("MapToMachineGroup",
+ "u",
+ SD_BUS_PARAM(gid_outer),
+ "sou",
+ SD_BUS_PARAM(machine_name)
+ SD_BUS_PARAM(machine_path)
+ SD_BUS_PARAM(gid_inner),
+ method_map_to_machine_group,
+ SD_BUS_VTABLE_UNPRIVILEGED),
+
+ SD_BUS_SIGNAL_WITH_NAMES("MachineNew",
+ "so",
+ SD_BUS_PARAM(machine)
+ SD_BUS_PARAM(path),
+ 0),
+ SD_BUS_SIGNAL_WITH_NAMES("MachineRemoved",
+ "so",
+ SD_BUS_PARAM(machine)
+ SD_BUS_PARAM(path),
+ 0),
+
+ SD_BUS_VTABLE_END
+};
+
+const BusObjectImplementation manager_object = {
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ .vtables = BUS_VTABLES(manager_vtable),
+ .children = BUS_IMPLEMENTATIONS( &machine_object,
+ &image_object ),
+};
+
+int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ const char *path, *result, *unit;
+ Manager *m = userdata;
+ Machine *machine;
+ uint32_t id;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
+
+ machine = hashmap_get(m->machine_units, unit);
+ if (!machine)
+ return 0;
+
+ if (streq_ptr(path, machine->scope_job)) {
+ machine->scope_job = mfree(machine->scope_job);
+
+ if (machine->started) {
+ if (streq(result, "done"))
+ machine_send_create_reply(machine, NULL);
+ else {
+ _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
+
+ sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
+
+ machine_send_create_reply(machine, &e);
+ }
+ }
+
+ machine_save(machine);
+ }
+
+ machine_add_to_gc_queue(machine);
+ return 0;
+}
+
+int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_free_ char *unit = NULL;
+ const char *path;
+ Manager *m = userdata;
+ Machine *machine;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ path = sd_bus_message_get_path(message);
+ if (!path)
+ return 0;
+
+ r = unit_name_from_dbus_path(path, &unit);
+ if (r == -EINVAL) /* not for a unit */
+ return 0;
+ if (r < 0) {
+ log_oom();
+ return 0;
+ }
+
+ machine = hashmap_get(m->machine_units, unit);
+ if (!machine)
+ return 0;
+
+ machine_add_to_gc_queue(machine);
+ return 0;
+}
+
+int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ const char *path, *unit;
+ Manager *m = userdata;
+ Machine *machine;
+ int r;
+
+ assert(message);
+ assert(m);
+
+ r = sd_bus_message_read(message, "so", &unit, &path);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
+
+ machine = hashmap_get(m->machine_units, unit);
+ if (!machine)
+ return 0;
+
+ machine_add_to_gc_queue(machine);
+ return 0;
+}
+
+int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ Manager *m = userdata;
+ Machine *machine;
+ int b, r;
+
+ assert(message);
+ assert(m);
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ return 0;
+ }
+ if (b)
+ return 0;
+
+ /* systemd finished reloading, let's recheck all our machines */
+ log_debug("System manager has been reloaded, rechecking machines...");
+
+ HASHMAP_FOREACH(machine, m->machines)
+ machine_add_to_gc_queue(machine);
+
+ return 0;
+}
+
+int manager_unref_unit(
+ Manager *m,
+ const char *unit,
+ sd_bus_error *error) {
+
+ assert(m);
+ assert(unit);
+
+ return bus_call_method(m->bus, bus_systemd_mgr, "UnrefUnit", error, NULL, "s", unit);
+}
+
+int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ int r;
+
+ assert(manager);
+ assert(unit);
+
+ r = bus_call_method(manager->bus, bus_systemd_mgr, "StopUnit", error, &reply, "ss", unit, "fail");
+ if (r < 0) {
+ if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
+ BUS_ERROR_LOAD_FAILED)) {
+
+ if (job)
+ *job = NULL;
+
+ sd_bus_error_free(error);
+ return 0;
+ }
+
+ return r;
+ }
+
+ if (job) {
+ const char *j;
+ char *copy;
+
+ r = sd_bus_message_read(reply, "o", &j);
+ if (r < 0)
+ return r;
+
+ copy = strdup(j);
+ if (!copy)
+ return -ENOMEM;
+
+ *job = copy;
+ }
+
+ return 1;
+}
+
+int manager_kill_unit(Manager *manager, const char *unit, int signo, sd_bus_error *error) {
+ assert(manager);
+ assert(unit);
+
+ return bus_call_method(manager->bus, bus_systemd_mgr, "KillUnit", error, NULL, "ssi", unit, "all", signo);
+}
+
+int manager_unit_is_active(Manager *manager, const char *unit) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_free_ char *path = NULL;
+ const char *state;
+ int r;
+
+ assert(manager);
+ assert(unit);
+
+ path = unit_dbus_path_from_name(unit);
+ if (!path)
+ return -ENOMEM;
+
+ r = sd_bus_get_property(
+ manager->bus,
+ "org.freedesktop.systemd1",
+ path,
+ "org.freedesktop.systemd1.Unit",
+ "ActiveState",
+ &error,
+ &reply,
+ "s");
+ if (r < 0) {
+ if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
+ SD_BUS_ERROR_DISCONNECTED))
+ return true;
+
+ if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
+ BUS_ERROR_LOAD_FAILED))
+ return false;
+
+ return r;
+ }
+
+ r = sd_bus_message_read(reply, "s", &state);
+ if (r < 0)
+ return -EINVAL;
+
+ return !STR_IN_SET(state, "inactive", "failed");
+}
+
+int manager_job_is_active(Manager *manager, const char *path) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ int r;
+
+ assert(manager);
+ assert(path);
+
+ r = sd_bus_get_property(
+ manager->bus,
+ "org.freedesktop.systemd1",
+ path,
+ "org.freedesktop.systemd1.Job",
+ "State",
+ &error,
+ &reply,
+ "s");
+ if (r < 0) {
+ if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
+ SD_BUS_ERROR_DISCONNECTED))
+ return true;
+
+ if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
+ return false;
+
+ return r;
+ }
+
+ /* We don't actually care about the state really. The fact
+ * that we could read the job state is enough for us */
+
+ return true;
+}
+
+int manager_get_machine_by_pid(Manager *m, pid_t pid, Machine **machine) {
+ Machine *mm;
+ int r;
+
+ assert(m);
+ assert(pid >= 1);
+ assert(machine);
+
+ mm = hashmap_get(m->machine_leaders, PID_TO_PTR(pid));
+ if (!mm) {
+ _cleanup_free_ char *unit = NULL;
+
+ r = cg_pid_get_unit(pid, &unit);
+ if (r >= 0)
+ mm = hashmap_get(m->machine_units, unit);
+ }
+ if (!mm)
+ return 0;
+
+ *machine = mm;
+ return 1;
+}
+
+int manager_add_machine(Manager *m, const char *name, Machine **_machine) {
+ Machine *machine;
+
+ assert(m);
+ assert(name);
+
+ machine = hashmap_get(m->machines, name);
+ if (!machine) {
+ machine = machine_new(m, _MACHINE_CLASS_INVALID, name);
+ if (!machine)
+ return -ENOMEM;
+ }
+
+ if (_machine)
+ *_machine = machine;
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 16:07:01 +0000