104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdbool.h>
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#include <stdint.h>
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#include "hashmap.h"
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#include "lockfile-util.h"
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#include "macro.h"
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#include "path-util.h"
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#include "string-util.h"
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#include "time-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_TYPE_MAX,
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_IMAGE_TYPE_INVALID = -1
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} ImageType;
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typedef struct Image {
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ImageType type;
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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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void *userdata;
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} Image;
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Image *image_unref(Image *i);
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void image_hashmap_free(Hashmap *map);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Image*, image_unref);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Hashmap*, image_hashmap_free);
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int image_find(const char *name, Image **ret);
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int image_discover(Hashmap *map);
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int image_remove(Image *i);
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int image_rename(Image *i, const char *new_name);
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int image_clone(Image *i, const char *new_name, bool read_only);
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int image_read_only(Image *i, bool b);
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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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bool image_name_is_valid(const char *s) _pure_;
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int image_path_lock(const char *path, int operation, LockFile *global, LockFile *local);
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int image_name_lock(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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static inline bool IMAGE_IS_HIDDEN(const struct 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_VENDOR(const struct Image *i) {
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assert(i);
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return i->path && path_startswith(i->path, "/usr");
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}
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static inline bool IMAGE_IS_HOST(const struct Image *i) {
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assert(i);
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if (i->name && streq(i->name, ".host"))
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return true;
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if (i->path && path_equal(i->path, "/"))
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return true;
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return false;
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}
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