1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#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 "namespace-util.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 = -EINVAL,
} ProtectHome;
typedef enum ProtectSystem {
PROTECT_SYSTEM_NO,
PROTECT_SYSTEM_YES,
PROTECT_SYSTEM_FULL,
PROTECT_SYSTEM_STRICT,
_PROTECT_SYSTEM_MAX,
_PROTECT_SYSTEM_INVALID = -EINVAL,
} ProtectSystem;
typedef enum ProtectProc {
PROTECT_PROC_DEFAULT,
PROTECT_PROC_NOACCESS, /* hidepid=noaccess */
PROTECT_PROC_INVISIBLE, /* hidepid=invisible */
PROTECT_PROC_PTRACEABLE, /* hidepid=ptraceable */
_PROTECT_PROC_MAX,
_PROTECT_PROC_INVALID = -EINVAL,
} ProtectProc;
typedef enum ProcSubset {
PROC_SUBSET_ALL,
PROC_SUBSET_PID, /* subset=pid */
_PROC_SUBSET_MAX,
_PROC_SUBSET_INVALID = -EINVAL,
} ProcSubset;
struct NamespaceInfo {
bool ignore_protect_paths;
bool private_dev;
bool protect_control_groups;
bool protect_kernel_tunables;
bool protect_kernel_modules;
bool protect_kernel_logs;
bool mount_apivfs;
bool protect_hostname;
bool private_network;
bool private_ipc;
bool mount_nosuid;
ProtectHome protect_home;
ProtectSystem protect_system;
ProtectProc protect_proc;
ProcSubset proc_subset;
};
struct BindMount {
char *source;
char *destination;
bool read_only;
bool nosuid;
bool recursive;
bool ignore_enoent;
};
struct TemporaryFileSystem {
char *path;
char *options;
};
typedef enum MountImageType {
MOUNT_IMAGE_DISCRETE,
MOUNT_IMAGE_EXTENSION,
_MOUNT_IMAGE_TYPE_MAX,
_MOUNT_IMAGE_TYPE_INVALID = -EINVAL,
} MountImageType;
struct MountImage {
char *source;
char *destination; /* Unused if MountImageType == MOUNT_IMAGE_EXTENSION */
LIST_HEAD(MountOptions, mount_options);
bool ignore_enoent;
MountImageType type;
};
int setup_namespace(
const char *root_directory,
const char *root_image,
const MountOptions *root_image_options,
const ImagePolicy *root_image_policy,
const NamespaceInfo *ns_info,
char **read_write_paths,
char **read_only_paths,
char **inaccessible_paths,
char **exec_paths,
char **no_exec_paths,
char **empty_directories,
char **exec_dir_symlinks,
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 ImagePolicy *mount_image_policy,
const char *tmp_dir,
const char *var_tmp_dir,
const char *creds_path,
const char *log_namespace,
unsigned long mount_propagation_flag,
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,
const MountImage *extension_images,
size_t n_extension_images,
const ImagePolicy *extension_image_policy,
char **extension_directories,
const char *propagate_dir,
const char *incoming_dir,
const char *extension_dir,
const char *notify_socket,
char **error_path);
#define RUN_SYSTEMD_EMPTY "/run/systemd/empty"
static inline char* namespace_cleanup_tmpdir(char *p) {
PROTECT_ERRNO;
if (!streq_ptr(p, RUN_SYSTEMD_EMPTY))
(void) rmdir(p);
return mfree(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_shareable_ns(int ns_storage_socket[static 2], unsigned long nsflag);
int open_shareable_ns_path(int netns_storage_socket[static 2], const char *path, unsigned long nsflag);
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_;
const char* protect_proc_to_string(ProtectProc i) _const_;
ProtectProc protect_proc_from_string(const char *s) _pure_;
const char* proc_subset_to_string(ProcSubset i) _const_;
ProcSubset proc_subset_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);
|
