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Merge pull request #13365 from keszybz/fix-commits-from-pr-13246
[thirdparty/systemd.git] / src / portable / portabled-image-bus.h
1 /* SPDX-License-Identifier: LGPL-2.1+ */
2 #pragma once
3
4 #include "sd-bus.h"
5
6 #include "machine-image.h"
7 #include "portabled.h"
8
9 int bus_image_common_get_os_release(Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, sd_bus_error *error);
10 int bus_image_common_get_metadata(Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, sd_bus_error *error);
11 int bus_image_common_attach(Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, sd_bus_error *error);
12 int bus_image_common_remove(Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, sd_bus_error *error);
13 int bus_image_common_mark_read_only(Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, sd_bus_error *error);
14 int bus_image_common_set_limit(Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, sd_bus_error *error);
15
16 extern const sd_bus_vtable image_vtable[];
17
18 int bus_image_path(Image *image, char **ret);
19
20 /* So here's some complexity: some of operations can either take an image name, or a fully qualified file system path
21 * to an image. We need to authenticate differently when processing these two: images referenced via simple image names
22 * mean the images are located in the image search path and thus safe for limited read access for unprivileged
23 * clients. For operations on images located anywhere else we need explicit authentication however, so that
24 * unprivileged clients can't make us open arbitrary files in the file system.
25 *
26 * The "Image" bus objects directly represent images in the image search path, but do not exist for path-referenced
27 * images. Hence, when requesting a bus object we need to refuse references by file system path, but still allow
28 * references by image name. Depending on the operation to execute potentially we need to authenticate in all cases. */
29
30 typedef enum ImageAcquireMode {
31 BUS_IMAGE_REFUSE_BY_PATH, /* allow by name + prohibit by path */
32 BUS_IMAGE_AUTHENTICATE_BY_PATH, /* allow by name + polkit by path */
33 BUS_IMAGE_AUTHENTICATE_ALL, /* polkit by name + polkit by path */
34 _BUS_IMAGE_ACQUIRE_MODE_MAX,
35 _BUS_IMAGE_ACQUIRE_MODE_INVALID = -1
36 } ImageAcquireMode;
37
38 int bus_image_acquire(Manager *m, sd_bus_message *message, const char *name_or_path, Image *image, ImageAcquireMode mode, const char *polkit_action, Image **ret, sd_bus_error *error);
39
40 int bus_image_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error);
41 int bus_image_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error);