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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
/***
Copyright © 2016 Djalal Harouni
***/
typedef struct NamespaceInfo NamespaceInfo;
typedef struct BindMount BindMount;
typedef struct TemporaryFileSystem TemporaryFileSystem;
typedef struct MountImage MountImage;
#include <stdbool.h>
#include "dissect-image.h"
#include "fs-util.h"
#include "macro.h"
#include "string-util.h"
typedef enum ProtectHome {
PROTECT_HOME_NO,
PROTECT_HOME_YES,
PROTECT_HOME_READ_ONLY,
PROTECT_HOME_TMPFS,
_PROTECT_HOME_MAX,
_PROTECT_HOME_INVALID = -1
} ProtectHome;
typedef enum NamespaceType {
NAMESPACE_MOUNT,
NAMESPACE_CGROUP,
NAMESPACE_UTS,
NAMESPACE_IPC,
NAMESPACE_USER,
NAMESPACE_PID,
NAMESPACE_NET,
_NAMESPACE_TYPE_MAX,
_NAMESPACE_TYPE_INVALID = -1,
} NamespaceType;
typedef enum ProtectSystem {
PROTECT_SYSTEM_NO,
PROTECT_SYSTEM_YES,
PROTECT_SYSTEM_FULL,
PROTECT_SYSTEM_STRICT,
_PROTECT_SYSTEM_MAX,
_PROTECT_SYSTEM_INVALID = -1
} ProtectSystem;
struct NamespaceInfo {
bool ignore_protect_paths:1;
bool private_dev:1;
bool private_mounts:1;
bool protect_control_groups:1;
bool protect_kernel_tunables:1;
bool protect_kernel_modules:1;
bool protect_kernel_logs:1;
bool mount_apivfs:1;
bool protect_hostname:1;
};
struct BindMount {
char *source;
char *destination;
bool read_only:1;
bool nosuid:1;
bool recursive:1;
bool ignore_enoent:1;
};
struct TemporaryFileSystem {
char *path;
char *options;
};
struct MountImage {
char *source;
char *destination;
bool ignore_enoent;
};
int setup_namespace(
const char *root_directory,
const char *root_image,
const MountOptions *root_image_options,
const NamespaceInfo *ns_info,
char **read_write_paths,
char **read_only_paths,
char **inaccessible_paths,
char **empty_directories,
const BindMount *bind_mounts,
size_t n_bind_mounts,
const TemporaryFileSystem *temporary_filesystems,
size_t n_temporary_filesystems,
const MountImage *mount_images,
size_t n_mount_images,
const char *tmp_dir,
const char *var_tmp_dir,
const char *log_namespace,
ProtectHome protect_home,
ProtectSystem protect_system,
unsigned long mount_flags,
const void *root_hash,
size_t root_hash_size,
const char *root_hash_path,
const void *root_hash_sig,
size_t root_hash_sig_size,
const char *root_hash_sig_path,
const char *root_verity,
DissectImageFlags dissected_image_flags,
char **error_path);
#define RUN_SYSTEMD_EMPTY "/run/systemd/empty"
static inline void namespace_cleanup_tmpdir(char *p) {
PROTECT_ERRNO;
if (!streq_ptr(p, RUN_SYSTEMD_EMPTY))
(void) rmdir(p);
free(p);
}
DEFINE_TRIVIAL_CLEANUP_FUNC(char*, namespace_cleanup_tmpdir);
int setup_tmp_dirs(
const char *id,
char **tmp_dir,
char **var_tmp_dir);
int setup_netns(const int netns_storage_socket[static 2]);
int open_netns_path(const int netns_storage_socket[static 2], const char *path);
const char* protect_home_to_string(ProtectHome p) _const_;
ProtectHome protect_home_from_string(const char *s) _pure_;
const char* protect_system_to_string(ProtectSystem p) _const_;
ProtectSystem protect_system_from_string(const char *s) _pure_;
void bind_mount_free_many(BindMount *b, size_t n);
int bind_mount_add(BindMount **b, size_t *n, const BindMount *item);
void temporary_filesystem_free_many(TemporaryFileSystem *t, size_t n);
int temporary_filesystem_add(TemporaryFileSystem **t, size_t *n,
const char *path, const char *options);
MountImage* mount_image_free_many(MountImage *m, size_t *n);
int mount_image_add(MountImage **m, size_t *n, const MountImage *item);
const char* namespace_type_to_string(NamespaceType t) _const_;
NamespaceType namespace_type_from_string(const char *s) _pure_;
bool ns_type_supported(NamespaceType type);
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