[thirdparty/systemd.git] / src / machine / image-dbus.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <sys/file.h>
#include <sys/mount.h>

#include "alloc-util.h"
#include "bus-get-properties.h"
#include "bus-label.h"
#include "bus-polkit.h"
#include "copy.h"
#include "discover-image.h"
#include "dissect-image.h"
#include "fd-util.h"
#include "fileio.h"
#include "fs-util.h"
#include "image-dbus.h"
#include "io-util.h"
#include "loop-util.h"
#include "missing_capability.h"
#include "mount-util.h"
#include "os-util.h"
#include "process-util.h"
#include "raw-clone.h"
#include "strv.h"
#include "user-util.h"

static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, image_type, ImageType);

int bus_image_method_remove(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        _cleanup_close_pair_ int errno_pipe_fd[2] = EBADF_PAIR;
        Image *image = ASSERT_PTR(userdata);
        Manager *m = image->userdata;
        pid_t child;
        int r;

        assert(message);

        if (m->n_operations >= OPERATIONS_MAX)
                return sd_bus_error_set(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing operations.");

        const char *details[] = {
                "image", image->name,
                "verb", "remove",
                NULL
        };

        r = bus_verify_polkit_async(
                        message,
                        "org.freedesktop.machine1.manage-images",
                        details,
                        &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");

        r = safe_fork("(sd-imgrm)", FORK_RESET_SIGNALS, &child);
        if (r < 0)
                return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m");
        if (r == 0) {
                errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]);

                r = image_remove(image);
                if (r < 0) {
                        (void) write(errno_pipe_fd[1], &r, sizeof(r));
                        _exit(EXIT_FAILURE);
                }

                _exit(EXIT_SUCCESS);
        }

        errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]);

        r = operation_new(m, NULL, child, message, errno_pipe_fd[0], NULL);
        if (r < 0) {
                (void) sigkill_wait(child);
                return r;
        }

        errno_pipe_fd[0] = -EBADF;

        return 1;
}

int bus_image_method_rename(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        Image *image = ASSERT_PTR(userdata);
        Manager *m = image->userdata;
        const char *new_name;
        int r;

        assert(message);

        r = sd_bus_message_read(message, "s", &new_name);
        if (r < 0)
                return r;

        if (!image_name_is_valid(new_name))
                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", new_name);

        const char *details[] = {
                "image", image->name,
                "verb", "rename",
                "new_name", new_name,
                NULL
        };

        r = bus_verify_polkit_async(
                        message,
                        "org.freedesktop.machine1.manage-images",
                        details,
                        &m->polkit_registry,
                        error);
        if (r < 0)
                return r;
        if (r == 0)
                return 1; /* Will call us back */

        r = image_rename(image, new_name);
        if (r < 0)
                return r;

        return sd_bus_reply_method_return(message, NULL);
}

int bus_image_method_clone(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        _cleanup_close_pair_ int errno_pipe_fd[2] = EBADF_PAIR;
        Image *image = ASSERT_PTR(userdata);
        Manager *m = ASSERT_PTR(image->userdata);
        const char *new_name;
        int r, read_only;
        pid_t child;

        assert(message);

        if (m->n_operations >= OPERATIONS_MAX)
                return sd_bus_error_set(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing operations.");

        r = sd_bus_message_read(message, "sb", &new_name, &read_only);
        if (r < 0)
                return r;

        if (!image_name_is_valid(new_name))
                return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", new_name);

        const char *details[] = {
                "image", image->name,
                "verb", "clone",
                "new_name", new_name,
                NULL
        };

        r = bus_verify_polkit_async(
                        message,
                        "org.freedesktop.machine1.manage-images",
                        details,
                        &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");

        r = safe_fork("(sd-imgclone)", FORK_RESET_SIGNALS, &child);
        if (r < 0)
                return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m");
        if (r == 0) {
                errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]);

                r = image_clone(image, new_name, read_only);
                if (r < 0) {
                        (void) write(errno_pipe_fd[1], &r, sizeof(r));
                        _exit(EXIT_FAILURE);
                }

                _exit(EXIT_SUCCESS);
        }

        errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]);

        r = operation_new(m, NULL, child, message, errno_pipe_fd[0], NULL);
        if (r < 0) {
                (void) sigkill_wait(child);
                return r;
        }

        errno_pipe_fd[0] = -EBADF;

        return 1;
}

int bus_image_method_mark_read_only(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        Image *image = userdata;
        Manager *m = image->userdata;
        int read_only, r;

        assert(message);

        r = sd_bus_message_read(message, "b", &read_only);
        if (r < 0)
                return r;

        const char *details[] = {
                "image", image->name,
                "verb", "mark_read_only",
                "read_only", one_zero(read_only),
                NULL
        };

        r = bus_verify_polkit_async(
                        message,
                        "org.freedesktop.machine1.manage-images",
                        details,
                        &m->polkit_registry,
                        error);
        if (r < 0)
                return r;
        if (r == 0)
                return 1; /* Will call us back */

        r = image_read_only(image, read_only);
        if (r < 0)
                return r;

        return sd_bus_reply_method_return(message, NULL);
}

int bus_image_method_set_limit(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        Image *image = userdata;
        Manager *m = image->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_set(error, SD_BUS_ERROR_INVALID_ARGS, "New limit out of range");

        const char *details[] = {
                "machine", image->name,
                "verb", "set_limit",
                NULL
        };

        r = bus_verify_polkit_async(
                        message,
                        "org.freedesktop.machine1.manage-images",
                        details,
                        &m->polkit_registry,
                        error);
        if (r < 0)
                return r;
        if (r == 0)
                return 1; /* Will call us back */

        r = image_set_limit(image, limit);
        if (r < 0)
                return r;

        return sd_bus_reply_method_return(message, NULL);
}

int bus_image_method_get_hostname(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        Image *image = userdata;
        int r;

        if (!image->metadata_valid) {
                r = image_read_metadata(image, &image_policy_container);
                if (r < 0)
                        return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
        }

        return sd_bus_reply_method_return(message, "s", image->hostname);
}

int bus_image_method_get_machine_id(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
        Image *image = userdata;
        int r;

        if (!image->metadata_valid) {
                r = image_read_metadata(image, &image_policy_container);
                if (r < 0)
                        return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
        }

        r = sd_bus_message_new_method_return(message, &reply);
        if (r < 0)
                return r;

        if (sd_id128_is_null(image->machine_id)) /* Add an empty array if the ID is zero */
                r = sd_bus_message_append(reply, "ay", 0);
        else
                r = sd_bus_message_append_array(reply, 'y', image->machine_id.bytes, 16);
        if (r < 0)
                return r;

        return sd_bus_send(NULL, reply, NULL);
}

int bus_image_method_get_machine_info(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        Image *image = userdata;
        int r;

        if (!image->metadata_valid) {
                r = image_read_metadata(image, &image_policy_container);
                if (r < 0)
                        return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
        }

        return bus_reply_pair_array(message, image->machine_info);
}

int bus_image_method_get_os_release(
                sd_bus_message *message,
                void *userdata,
                sd_bus_error *error) {

        Image *image = userdata;
        int r;

        if (!image->metadata_valid) {
                r = image_read_metadata(image, &image_policy_container);
                if (r < 0)
                        return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
        }

        return bus_reply_pair_array(message, image->os_release);
}

static int image_flush_cache(sd_event_source *s, void *userdata) {
        Manager *m = ASSERT_PTR(userdata);

        assert(s);

        hashmap_clear(m->image_cache);
        return 0;
}

static int image_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
        _cleanup_free_ char *e = NULL;
        Manager *m = userdata;
        Image *image = NULL;
        const char *p;
        int r;

        assert(bus);
        assert(path);
        assert(interface);
        assert(found);

        p = startswith(path, "/org/freedesktop/machine1/image/");
        if (!p)
                return 0;

        e = bus_label_unescape(p);
        if (!e)
                return -ENOMEM;

        image = hashmap_get(m->image_cache, e);
        if (image) {
                *found = image;
                return 1;
        }

        if (!m->image_cache_defer_event) {
                r = sd_event_add_defer(m->event, &m->image_cache_defer_event, image_flush_cache, m);
                if (r < 0)
                        return r;

                r = sd_event_source_set_priority(m->image_cache_defer_event, SD_EVENT_PRIORITY_IDLE);
                if (r < 0)
                        return r;
        }

        r = sd_event_source_set_enabled(m->image_cache_defer_event, SD_EVENT_ONESHOT);
        if (r < 0)
                return r;

        r = image_find(IMAGE_MACHINE, e, NULL, &image);
        if (r == -ENOENT)
                return 0;
        if (r < 0)
                return r;

        image->userdata = m;

        r = hashmap_ensure_put(&m->image_cache, &image_hash_ops, image->name, image);
        if (r < 0) {
                image_unref(image);
                return r;
        }

        *found = image;
        return 1;
}

char *image_bus_path(const char *name) {
        _cleanup_free_ char *e = NULL;

        assert(name);

        e = bus_label_escape(name);
        if (!e)
                return NULL;

        return strjoin("/org/freedesktop/machine1/image/", e);
}

static int image_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
        _cleanup_hashmap_free_ Hashmap *images = NULL;
        _cleanup_strv_free_ char **l = NULL;
        Image *image;
        int r;

        assert(bus);
        assert(path);
        assert(nodes);

        images = hashmap_new(&image_hash_ops);
        if (!images)
                return -ENOMEM;

        r = image_discover(IMAGE_MACHINE, NULL, images);
        if (r < 0)
                return r;

        HASHMAP_FOREACH(image, images) {
                char *p;

                p = image_bus_path(image->name);
                if (!p)
                        return -ENOMEM;

                r = strv_consume(&l, p);
                if (r < 0)
                        return r;
        }

        *nodes = TAKE_PTR(l);

        return 1;
}

const sd_bus_vtable image_vtable[] = {
        SD_BUS_VTABLE_START(0),
        SD_BUS_PROPERTY("Name", "s", NULL, offsetof(Image, name), 0),
        SD_BUS_PROPERTY("Path", "s", NULL, offsetof(Image, path), 0),
        SD_BUS_PROPERTY("Type", "s", property_get_type,  offsetof(Image, type), 0),
        SD_BUS_PROPERTY("ReadOnly", "b", bus_property_get_bool, offsetof(Image, read_only), 0),
        SD_BUS_PROPERTY("CreationTimestamp", "t", NULL, offsetof(Image, crtime), 0),
        SD_BUS_PROPERTY("ModificationTimestamp", "t", NULL, offsetof(Image, mtime), 0),
        SD_BUS_PROPERTY("Usage", "t", NULL, offsetof(Image, usage), 0),
        SD_BUS_PROPERTY("Limit", "t", NULL, offsetof(Image, limit), 0),
        SD_BUS_PROPERTY("UsageExclusive", "t", NULL, offsetof(Image, usage_exclusive), 0),
        SD_BUS_PROPERTY("LimitExclusive", "t", NULL, offsetof(Image, limit_exclusive), 0),
        SD_BUS_METHOD("Remove", NULL, NULL, bus_image_method_remove, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("Rename", "s", NULL, bus_image_method_rename, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("Clone", "sb", NULL, bus_image_method_clone, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("MarkReadOnly", "b", NULL, bus_image_method_mark_read_only, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("SetLimit", "t", NULL, bus_image_method_set_limit, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("GetHostname", NULL, "s", bus_image_method_get_hostname, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("GetMachineID", NULL, "ay", bus_image_method_get_machine_id, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("GetMachineInfo", NULL, "a{ss}", bus_image_method_get_machine_info, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_METHOD("GetOSRelease", NULL, "a{ss}", bus_image_method_get_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
        SD_BUS_VTABLE_END
};

const BusObjectImplementation image_object = {
        "/org/freedesktop/machine1/image",
        "org.freedesktop.machine1.Image",
        .fallback_vtables = BUS_FALLBACK_VTABLES({image_vtable, image_object_find}),
        .node_enumerator = image_node_enumerator,
};
Commit	Line	Data
db9ecf05	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
ebeccf9e	2
fe993888	3	#include <sys/file.h>
9153b02b LP	4	#include <sys/mount.h>
9153b02b LP	5
b5efdb8a	6	#include "alloc-util.h"
40af3d02	7	#include "bus-get-properties.h"
ebeccf9e	8	#include "bus-label.h"
269e4d2d	9	#include "bus-polkit.h"
9153b02b	10	#include "copy.h"
57f1b61b	11	#include "discover-image.h"
9153b02b	12	#include "dissect-image.h"
56599585	13	#include "fd-util.h"
9153b02b LP	14	#include "fileio.h"
9153b02b LP	15	#include "fs-util.h"
003dffde	16	#include "image-dbus.h"
a90fb858	17	#include "io-util.h"
9153b02b	18	#include "loop-util.h"
204f52e3	19	#include "missing_capability.h"
9153b02b	20	#include "mount-util.h"
6ef06723	21	#include "os-util.h"
56599585	22	#include "process-util.h"
9153b02b	23	#include "raw-clone.h"
ee104e11 LP	24	#include "strv.h"
ee104e11 LP	25	#include "user-util.h"
ebeccf9e	26
1ddb263d	27	static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, image_type, ImageType);
ebeccf9e	28
1ddb263d	29	int bus_image_method_remove(
08682124 LP	30	sd_bus_message *message,
	31	void *userdata,
	32	sd_bus_error *error) {
	33
71136404	34	_cleanup_close_pair_ int errno_pipe_fd[2] = EBADF_PAIR;
99534007	35	Image *image = ASSERT_PTR(userdata);
70244d1d	36	Manager *m = image->userdata;
5d2036b5	37	pid_t child;
08682124 LP	38	int r;
08682124 LP	39
08682124	40	assert(message);
08682124	41
5d2036b5	42	if (m->n_operations >= OPERATIONS_MAX)
1b09b81c	43	return sd_bus_error_set(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing operations.");
5d2036b5	44
8dd3f6a3 LN	45	const char *details[] = {
	46	"image", image->name,
	47	"verb", "remove",
	48	NULL
	49	};
	50
70244d1d LP	51	r = bus_verify_polkit_async(
70244d1d LP	52	message,
70244d1d	53	"org.freedesktop.machine1.manage-images",
8dd3f6a3	54	details,
70244d1d LP	55	&m->polkit_registry,
	56	error);
	57	if (r < 0)
	58	return r;
	59	if (r == 0)
	60	return 1; /* Will call us back */
	61
5d2036b5 LP	62	if (pipe2(errno_pipe_fd, O_CLOEXEC\|O_NONBLOCK) < 0)
	63	return sd_bus_error_set_errnof(error, errno, "Failed to create pipe: %m");
	64
4c253ed1 LP	65	r = safe_fork("(sd-imgrm)", FORK_RESET_SIGNALS, &child);
	66	if (r < 0)
	67	return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m");
	68	if (r == 0) {
5d2036b5 LP	69	errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]);
	70
	71	r = image_remove(image);
	72	if (r < 0) {
	73	(void) write(errno_pipe_fd[1], &r, sizeof(r));
	74	_exit(EXIT_FAILURE);
	75	}
	76
	77	_exit(EXIT_SUCCESS);
	78	}
	79
	80	errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]);
	81
03c2b288	82	r = operation_new(m, NULL, child, message, errno_pipe_fd[0], NULL);
5d2036b5 LP	83	if (r < 0) {
5d2036b5 LP	84	(void) sigkill_wait(child);
08682124	85	return r;
5d2036b5 LP	86	}
5d2036b5 LP	87
254d1313	88	errno_pipe_fd[0] = -EBADF;
08682124	89
5d2036b5	90	return 1;
08682124 LP	91	}
08682124 LP	92
1ddb263d	93	int bus_image_method_rename(
ebd93cb6 LP	94	sd_bus_message *message,
	95	void *userdata,
	96	sd_bus_error *error) {
	97
99534007	98	Image *image = ASSERT_PTR(userdata);
70244d1d	99	Manager *m = image->userdata;
ebd93cb6 LP	100	const char *new_name;
	101	int r;
	102
ebd93cb6	103	assert(message);
ebd93cb6 LP	104
	105	r = sd_bus_message_read(message, "s", &new_name);
	106	if (r < 0)
	107	return r;
	108
	109	if (!image_name_is_valid(new_name))
	110	return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", new_name);
	111
8dd3f6a3 LN	112	const char *details[] = {
	113	"image", image->name,
	114	"verb", "rename",
	115	"new_name", new_name,
	116	NULL
	117	};
	118
70244d1d LP	119	r = bus_verify_polkit_async(
70244d1d LP	120	message,
70244d1d	121	"org.freedesktop.machine1.manage-images",
8dd3f6a3	122	details,
70244d1d LP	123	&m->polkit_registry,
	124	error);
	125	if (r < 0)
	126	return r;
	127	if (r == 0)
	128	return 1; /* Will call us back */
	129
ebd93cb6 LP	130	r = image_rename(image, new_name);
	131	if (r < 0)
	132	return r;
	133
	134	return sd_bus_reply_method_return(message, NULL);
	135	}
	136
1ddb263d	137	int bus_image_method_clone(
ebd93cb6 LP	138	sd_bus_message *message,
	139	void *userdata,
	140	sd_bus_error *error) {
	141
71136404	142	_cleanup_close_pair_ int errno_pipe_fd[2] = EBADF_PAIR;
99534007 DT	143	Image *image = ASSERT_PTR(userdata);
99534007 DT	144	Manager *m = ASSERT_PTR(image->userdata);
ebd93cb6 LP	145	const char *new_name;
ebd93cb6 LP	146	int r, read_only;
56599585	147	pid_t child;
ebd93cb6	148
ebd93cb6	149	assert(message);
56599585 LP	150
56599585 LP	151	if (m->n_operations >= OPERATIONS_MAX)
1b09b81c	152	return sd_bus_error_set(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Too many ongoing operations.");
ebd93cb6 LP	153
	154	r = sd_bus_message_read(message, "sb", &new_name, &read_only);
	155	if (r < 0)
	156	return r;
	157
	158	if (!image_name_is_valid(new_name))
	159	return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Image name '%s' is invalid.", new_name);
	160
8dd3f6a3 LN	161	const char *details[] = {
	162	"image", image->name,
	163	"verb", "clone",
	164	"new_name", new_name,
	165	NULL
	166	};
	167
70244d1d LP	168	r = bus_verify_polkit_async(
70244d1d LP	169	message,
70244d1d	170	"org.freedesktop.machine1.manage-images",
8dd3f6a3	171	details,
70244d1d LP	172	&m->polkit_registry,
	173	error);
	174	if (r < 0)
	175	return r;
	176	if (r == 0)
	177	return 1; /* Will call us back */
	178
56599585 LP	179	if (pipe2(errno_pipe_fd, O_CLOEXEC\|O_NONBLOCK) < 0)
	180	return sd_bus_error_set_errnof(error, errno, "Failed to create pipe: %m");
	181
f2747bf5	182	r = safe_fork("(sd-imgclone)", FORK_RESET_SIGNALS, &child);
4c253ed1 LP	183	if (r < 0)
	184	return sd_bus_error_set_errnof(error, r, "Failed to fork(): %m");
	185	if (r == 0) {
56599585 LP	186	errno_pipe_fd[0] = safe_close(errno_pipe_fd[0]);
	187
	188	r = image_clone(image, new_name, read_only);
	189	if (r < 0) {
	190	(void) write(errno_pipe_fd[1], &r, sizeof(r));
	191	_exit(EXIT_FAILURE);
	192	}
	193
	194	_exit(EXIT_SUCCESS);
	195	}
	196
	197	errno_pipe_fd[1] = safe_close(errno_pipe_fd[1]);
	198
03c2b288	199	r = operation_new(m, NULL, child, message, errno_pipe_fd[0], NULL);
56599585	200	if (r < 0) {
89c9030d	201	(void) sigkill_wait(child);
ebd93cb6	202	return r;
56599585	203	}
ebd93cb6	204
254d1313	205	errno_pipe_fd[0] = -EBADF;
56599585 LP	206
56599585 LP	207	return 1;
ebd93cb6 LP	208	}
ebd93cb6 LP	209
1ddb263d	210	int bus_image_method_mark_read_only(
ebd93cb6 LP	211	sd_bus_message *message,
	212	void *userdata,
	213	sd_bus_error *error) {
	214
1ddb263d	215	Image *image = userdata;
70244d1d	216	Manager *m = image->userdata;
2e1ae325	217	int read_only, r;
ebd93cb6	218
ebd93cb6 LP	219	assert(message);
ebd93cb6 LP	220
ebd93cb6 LP	221	r = sd_bus_message_read(message, "b", &read_only);
	222	if (r < 0)
	223	return r;
	224
8dd3f6a3 LN	225	const char *details[] = {
	226	"image", image->name,
	227	"verb", "mark_read_only",
2c7bcdd5	228	"read_only", one_zero(read_only),
8dd3f6a3 LN	229	NULL
	230	};
	231
70244d1d LP	232	r = bus_verify_polkit_async(
70244d1d LP	233	message,
70244d1d	234	"org.freedesktop.machine1.manage-images",
8dd3f6a3	235	details,
70244d1d LP	236	&m->polkit_registry,
	237	error);
	238	if (r < 0)
	239	return r;
	240	if (r == 0)
	241	return 1; /* Will call us back */
	242
ebd93cb6 LP	243	r = image_read_only(image, read_only);
	244	if (r < 0)
	245	return r;
	246
	247	return sd_bus_reply_method_return(message, NULL);
	248	}
	249
d6ce17c7	250	int bus_image_method_set_limit(
d6ce17c7 LP	251	sd_bus_message *message,
	252	void *userdata,
	253	sd_bus_error *error) {
	254
	255	Image *image = userdata;
	256	Manager *m = image->userdata;
	257	uint64_t limit;
	258	int r;
	259
d6ce17c7 LP	260	assert(message);
	261
	262	r = sd_bus_message_read(message, "t", &limit);
	263	if (r < 0)
	264	return r;
a90fb858	265	if (!FILE_SIZE_VALID_OR_INFINITY(limit))
1b09b81c	266	return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "New limit out of range");
d6ce17c7	267
8dd3f6a3 LN	268	const char *details[] = {
	269	"machine", image->name,
	270	"verb", "set_limit",
	271	NULL
	272	};
	273
d6ce17c7 LP	274	r = bus_verify_polkit_async(
d6ce17c7 LP	275	message,
d6ce17c7	276	"org.freedesktop.machine1.manage-images",
8dd3f6a3	277	details,
d6ce17c7 LP	278	&m->polkit_registry,
	279	error);
	280	if (r < 0)
	281	return r;
	282	if (r == 0)
	283	return 1; /* Will call us back */
	284
	285	r = image_set_limit(image, limit);
	286	if (r < 0)
	287	return r;
	288
	289	return sd_bus_reply_method_return(message, NULL);
	290	}
	291
cf30a8c1 LP	292	int bus_image_method_get_hostname(
	293	sd_bus_message *message,
	294	void *userdata,
	295	sd_bus_error *error) {
9153b02b	296
cf30a8c1	297	Image *image = userdata;
9153b02b LP	298	int r;
9153b02b LP	299
cf30a8c1	300	if (!image->metadata_valid) {
84be0c71	301	r = image_read_metadata(image, &image_policy_container);
cf30a8c1 LP	302	if (r < 0)
	303	return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
	304	}
9153b02b	305
cf30a8c1	306	return sd_bus_reply_method_return(message, "s", image->hostname);
9153b02b LP	307	}
9153b02b LP	308
cf30a8c1 LP	309	int bus_image_method_get_machine_id(
	310	sd_bus_message *message,
	311	void *userdata,
	312	sd_bus_error *error) {
9153b02b	313
cf30a8c1 LP	314	_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
	315	Image *image = userdata;
	316	int r;
9153b02b	317
cf30a8c1	318	if (!image->metadata_valid) {
84be0c71	319	r = image_read_metadata(image, &image_policy_container);
9153b02b	320	if (r < 0)
cf30a8c1	321	return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
9153b02b LP	322	}
9153b02b LP	323
cf30a8c1	324	r = sd_bus_message_new_method_return(message, &reply);
9153b02b LP	325	if (r < 0)
	326	return r;
	327
cf30a8c1 LP	328	if (sd_id128_is_null(image->machine_id)) /* Add an empty array if the ID is zero */
	329	r = sd_bus_message_append(reply, "ay", 0);
	330	else
	331	r = sd_bus_message_append_array(reply, 'y', image->machine_id.bytes, 16);
9153b02b	332	if (r < 0)
cf30a8c1	333	return r;
9153b02b	334
cf30a8c1	335	return sd_bus_send(NULL, reply, NULL);
9153b02b LP	336	}
9153b02b LP	337
cf30a8c1	338	int bus_image_method_get_machine_info(
9153b02b LP	339	sd_bus_message *message,
	340	void *userdata,
	341	sd_bus_error *error) {
	342
9153b02b LP	343	Image *image = userdata;
	344	int r;
	345
cf30a8c1	346	if (!image->metadata_valid) {
84be0c71	347	r = image_read_metadata(image, &image_policy_container);
cf30a8c1 LP	348	if (r < 0)
	349	return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
	350	}
9153b02b	351
cf30a8c1 LP	352	return bus_reply_pair_array(message, image->machine_info);
cf30a8c1 LP	353	}
9153b02b	354
cf30a8c1 LP	355	int bus_image_method_get_os_release(
	356	sd_bus_message *message,
	357	void *userdata,
	358	sd_bus_error *error) {
9153b02b	359
cf30a8c1 LP	360	Image *image = userdata;
cf30a8c1 LP	361	int r;
9153b02b	362
cf30a8c1	363	if (!image->metadata_valid) {
84be0c71	364	r = image_read_metadata(image, &image_policy_container);
cf30a8c1 LP	365	if (r < 0)
cf30a8c1 LP	366	return sd_bus_error_set_errnof(error, r, "Failed to read image metadata: %m");
9153b02b	367	}
9153b02b	368
cf30a8c1	369	return bus_reply_pair_array(message, image->os_release);
9153b02b LP	370	}
9153b02b LP	371
1ddb263d	372	static int image_flush_cache(sd_event_source s, void userdata) {
99534007	373	Manager *m = ASSERT_PTR(userdata);
1ddb263d LP	374
1ddb263d LP	375	assert(s);
1ddb263d	376
b07ec5a1	377	hashmap_clear(m->image_cache);
1ddb263d LP	378	return 0;
	379	}
	380
4faa530c	381	static int image_object_find(sd_bus bus, const char path, const char interface, void userdata, void *found, sd_bus_error error) {
1ddb263d LP	382	_cleanup_free_ char *e = NULL;
	383	Manager *m = userdata;
	384	Image *image = NULL;
	385	const char *p;
ebeccf9e LP	386	int r;
	387
	388	assert(bus);
	389	assert(path);
	390	assert(interface);
	391	assert(found);
	392
1ddb263d LP	393	p = startswith(path, "/org/freedesktop/machine1/image/");
	394	if (!p)
	395	return 0;
	396
	397	e = bus_label_unescape(p);
	398	if (!e)
	399	return -ENOMEM;
	400
	401	image = hashmap_get(m->image_cache, e);
	402	if (image) {
	403	*found = image;
	404	return 1;
	405	}
	406
1ddb263d LP	407	if (!m->image_cache_defer_event) {
	408	r = sd_event_add_defer(m->event, &m->image_cache_defer_event, image_flush_cache, m);
	409	if (r < 0)
	410	return r;
	411
	412	r = sd_event_source_set_priority(m->image_cache_defer_event, SD_EVENT_PRIORITY_IDLE);
	413	if (r < 0)
	414	return r;
	415	}
	416
	417	r = sd_event_source_set_enabled(m->image_cache_defer_event, SD_EVENT_ONESHOT);
	418	if (r < 0)
	419	return r;
	420
d577d4a4	421	r = image_find(IMAGE_MACHINE, e, NULL, &image);
3a6ce860 LP	422	if (r == -ENOENT)
	423	return 0;
	424	if (r < 0)
ebeccf9e LP	425	return r;
ebeccf9e LP	426
70244d1d LP	427	image->userdata = m;
70244d1d LP	428
32ae5db6	429	r = hashmap_ensure_put(&m->image_cache, &image_hash_ops, image->name, image);
1ddb263d LP	430	if (r < 0) {
	431	image_unref(image);
	432	return r;
	433	}
	434
	435	*found = image;
ebeccf9e LP	436	return 1;
	437	}
	438
	439	char image_bus_path(const char name) {
	440	_cleanup_free_ char *e = NULL;
	441
	442	assert(name);
	443
	444	e = bus_label_escape(name);
	445	if (!e)
	446	return NULL;
	447
b910cc72	448	return strjoin("/org/freedesktop/machine1/image/", e);
ebeccf9e LP	449	}
ebeccf9e LP	450
4faa530c	451	static int image_node_enumerator(sd_bus bus, const char path, void userdata, char *nodes, sd_bus_error error) {
b07ec5a1	452	_cleanup_hashmap_free_ Hashmap *images = NULL;
ebeccf9e LP	453	_cleanup_strv_free_ char **l = NULL;
ebeccf9e LP	454	Image *image;
ebeccf9e LP	455	int r;
	456
	457	assert(bus);
	458	assert(path);
	459	assert(nodes);
	460
b07ec5a1	461	images = hashmap_new(&image_hash_ops);
ebeccf9e LP	462	if (!images)
	463	return -ENOMEM;
	464
d577d4a4	465	r = image_discover(IMAGE_MACHINE, NULL, images);
ebeccf9e LP	466	if (r < 0)
	467	return r;
	468
90e74a66	469	HASHMAP_FOREACH(image, images) {
ebeccf9e LP	470	char *p;
	471
	472	p = image_bus_path(image->name);
	473	if (!p)
	474	return -ENOMEM;
	475
	476	r = strv_consume(&l, p);
	477	if (r < 0)
	478	return r;
	479	}
	480
1cc6c93a	481	*nodes = TAKE_PTR(l);
ebeccf9e LP	482
	483	return 1;
	484	}
4faa530c ZJS	485
	486	const sd_bus_vtable image_vtable[] = {
	487	SD_BUS_VTABLE_START(0),
	488	SD_BUS_PROPERTY("Name", "s", NULL, offsetof(Image, name), 0),
	489	SD_BUS_PROPERTY("Path", "s", NULL, offsetof(Image, path), 0),
	490	SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Image, type), 0),
	491	SD_BUS_PROPERTY("ReadOnly", "b", bus_property_get_bool, offsetof(Image, read_only), 0),
	492	SD_BUS_PROPERTY("CreationTimestamp", "t", NULL, offsetof(Image, crtime), 0),
	493	SD_BUS_PROPERTY("ModificationTimestamp", "t", NULL, offsetof(Image, mtime), 0),
	494	SD_BUS_PROPERTY("Usage", "t", NULL, offsetof(Image, usage), 0),
	495	SD_BUS_PROPERTY("Limit", "t", NULL, offsetof(Image, limit), 0),
	496	SD_BUS_PROPERTY("UsageExclusive", "t", NULL, offsetof(Image, usage_exclusive), 0),
	497	SD_BUS_PROPERTY("LimitExclusive", "t", NULL, offsetof(Image, limit_exclusive), 0),
	498	SD_BUS_METHOD("Remove", NULL, NULL, bus_image_method_remove, SD_BUS_VTABLE_UNPRIVILEGED),
	499	SD_BUS_METHOD("Rename", "s", NULL, bus_image_method_rename, SD_BUS_VTABLE_UNPRIVILEGED),
	500	SD_BUS_METHOD("Clone", "sb", NULL, bus_image_method_clone, SD_BUS_VTABLE_UNPRIVILEGED),
	501	SD_BUS_METHOD("MarkReadOnly", "b", NULL, bus_image_method_mark_read_only, SD_BUS_VTABLE_UNPRIVILEGED),
	502	SD_BUS_METHOD("SetLimit", "t", NULL, bus_image_method_set_limit, SD_BUS_VTABLE_UNPRIVILEGED),
	503	SD_BUS_METHOD("GetHostname", NULL, "s", bus_image_method_get_hostname, SD_BUS_VTABLE_UNPRIVILEGED),
	504	SD_BUS_METHOD("GetMachineID", NULL, "ay", bus_image_method_get_machine_id, SD_BUS_VTABLE_UNPRIVILEGED),
	505	SD_BUS_METHOD("GetMachineInfo", NULL, "a{ss}", bus_image_method_get_machine_info, SD_BUS_VTABLE_UNPRIVILEGED),
	506	SD_BUS_METHOD("GetOSRelease", NULL, "a{ss}", bus_image_method_get_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
	507	SD_BUS_VTABLE_END
	508	};
	509
	510	const BusObjectImplementation image_object = {
	511	"/org/freedesktop/machine1/image",
	512	"org.freedesktop.machine1.Image",
	513	.fallback_vtables = BUS_FALLBACK_VTABLES({image_vtable, image_object_find}),
	514	.node_enumerator = image_node_enumerator,
	515	};