mirror of
https://github.com/morgan9e/systemd
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117 lines
3.8 KiB
C
117 lines
3.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "sd-id128.h"
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#include "shared-forward.h"
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#include "os-util.h"
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typedef enum ImageType {
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IMAGE_DIRECTORY,
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IMAGE_SUBVOLUME,
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IMAGE_RAW,
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IMAGE_BLOCK,
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_IMAGE_TYPE_MAX,
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_IMAGE_TYPE_INVALID = -EINVAL,
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} ImageType;
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typedef struct Image {
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unsigned n_ref;
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ImageType type;
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ImageClass class;
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char *name;
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char *path;
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bool read_only;
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usec_t crtime;
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usec_t mtime;
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uint64_t usage;
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uint64_t usage_exclusive;
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uint64_t limit;
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uint64_t limit_exclusive;
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char *hostname;
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sd_id128_t machine_id;
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char **machine_info;
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char **os_release;
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char **sysext_release;
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char **confext_release;
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bool metadata_valid:1; /* true if the above 6 metadata fields have been read from the image */
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bool discoverable:1; /* true if we know for sure that image_find() would find the image given just the short name */
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bool foreign_uid_owned:1; /* true if this is of type IMAGE_DIRECTORY/IMAGE_SUBVOLUME and owned by foreign UID range */
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void *userdata;
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} Image;
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Image* image_unref(Image *i);
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Image* image_ref(Image *i);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Image*, image_unref);
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int image_find(RuntimeScope scope, ImageClass class, const char *name, const char *root, Image **ret);
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int image_from_path(const char *path, Image **ret);
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int image_find_harder(RuntimeScope scope, ImageClass class, const char *name_or_path, const char *root, Image **ret);
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int image_discover(RuntimeScope scope, ImageClass class, const char *root, Hashmap **images);
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int image_remove(Image *i, RuntimeScope scope);
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int image_rename(Image *i, const char *new_name, RuntimeScope scope);
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int image_clone(Image *i, const char *new_name, bool read_only, RuntimeScope scope);
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int image_read_only(Image *i, bool b, RuntimeScope scope);
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const char* image_type_to_string(ImageType t) _const_;
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ImageType image_type_from_string(const char *s) _pure_;
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int image_path_lock(RuntimeScope scope, const char *path, int operation, LockFile *global, LockFile *local);
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int image_name_lock(RuntimeScope scope, const char *name, int operation, LockFile *ret);
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int image_set_limit(Image *i, uint64_t referenced_max);
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int image_set_pool_limit(RuntimeScope scope, ImageClass class, uint64_t referenced_max);
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int image_read_metadata(Image *i, const ImagePolicy *image_policy, RuntimeScope scope);
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bool image_in_search_path(RuntimeScope scope, ImageClass class, const char *root, const char *image);
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static inline char** image_extension_release(Image *image, ImageClass class) {
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assert(image);
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if (class == IMAGE_SYSEXT)
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return image->sysext_release;
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if (class == IMAGE_CONFEXT)
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return image->confext_release;
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return NULL;
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}
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static inline bool image_is_hidden(const Image *i) {
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assert(i);
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return i->name && i->name[0] == '.';
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}
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static inline bool image_is_read_only(const Image *i) {
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assert(i);
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/* We enforce the rule that hidden images are always read-only too. If people want to change hidden
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* images they should make a copy first, and make that one mutable */
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if (image_is_hidden(i))
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return true;
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return i->read_only;
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}
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int bus_property_get_image_is_read_only(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *reterr_error);
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bool image_is_vendor(const Image *i);
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bool image_is_host(const Image *i);
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int image_to_json(const Image *i, sd_json_variant **ret);
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int image_root_pick(RuntimeScope scope, ImageClass c, bool runtime, char **ret);
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extern const struct hash_ops image_hash_ops;
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extern const char* const image_search_path[_IMAGE_CLASS_MAX];
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