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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <linux/fs.h>
#include <sys/vfs.h>
#include "sd-id128.h"
#include "loop-util.h"
#include "strv.h"
#include "user-record.h"
#include "user-record-util.h"
typedef struct HomeSetup {
char *dm_name;
char *dm_node;
LoopDevice *loop;
struct crypt_device *crypt_device;
int root_fd;
int image_fd;
sd_id128_t found_partition_uuid;
sd_id128_t found_luks_uuid;
sd_id128_t found_fs_uuid;
uint8_t fscrypt_key_descriptor[FS_KEY_DESCRIPTOR_SIZE];
void *volume_key;
size_t volume_key_size;
bool undo_dm:1;
bool undo_mount:1; /* Whether to unmount /run/systemd/user-home-mount */
bool do_offline_fitrim:1;
bool do_offline_fallocate:1;
bool do_mark_clean:1;
bool do_drop_caches:1;
uint64_t partition_offset;
uint64_t partition_size;
char *mount_suffix; /* The directory to use as home dir is this path below /run/systemd/user-home-mount */
} HomeSetup;
typedef struct PasswordCache {
/* Decoding passwords from security tokens is expensive and typically requires user interaction,
* hence cache any we already figured out. */
char **pkcs11_passwords;
char **fido2_passwords;
} PasswordCache;
void password_cache_free(PasswordCache *cache);
static inline bool password_cache_contains(const PasswordCache *cache, const char *p) {
if (!cache)
return false;
return strv_contains(cache->pkcs11_passwords, p) || strv_contains(cache->fido2_passwords, p);
}
#define HOME_SETUP_INIT \
{ \
.root_fd = -1, \
.image_fd = -1, \
.partition_offset = UINT64_MAX, \
.partition_size = UINT64_MAX, \
}
/* Various flags for the operation of setting up a home directory */
typedef enum HomeSetupFlags {
HOME_SETUP_ALREADY_ACTIVATED = 1 << 0, /* Open an already activated home, rather than activate it afresh */
/* CIFS backend: */
HOME_SETUP_CIFS_MKDIR = 1 << 1, /* Create CIFS subdir when missing */
} HomeSetupFlags;
int home_setup_done(HomeSetup *setup);
int home_setup(UserRecord *h, HomeSetupFlags flags, PasswordCache *cache, HomeSetup *setup, UserRecord **ret_header_home);
int home_refresh(UserRecord *h, HomeSetup *setup, UserRecord *header_home, PasswordCache *cache, struct statfs *ret_statfs, UserRecord **ret_new_home);
int home_maybe_shift_uid(UserRecord *h, HomeSetup *setup);
int home_populate(UserRecord *h, int dir_fd);
int home_load_embedded_identity(UserRecord *h, int root_fd, UserRecord *header_home, UserReconcileMode mode, PasswordCache *cache, UserRecord **ret_embedded_home, UserRecord **ret_new_home);
int home_store_embedded_identity(UserRecord *h, int root_fd, uid_t uid, UserRecord *old_home);
int home_extend_embedded_identity(UserRecord *h, UserRecord *used, HomeSetup *setup);
int user_record_authenticate(UserRecord *h, UserRecord *secret, PasswordCache *cache, bool strict_verify);
int home_sync_and_statfs(int root_fd, struct statfs *ret);
#define HOME_RUNTIME_WORK_DIR "/run/systemd/user-home-mount"
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