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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
e83bebef LP |
2 | #pragma once |
3 | ||
4 | /*** | |
5 | This file is part of systemd. | |
6 | ||
7 | Copyright 2015 Lennart Poettering | |
8 | ||
9 | systemd is free software; you can redistribute it and/or modify it | |
10 | under the terms of the GNU Lesser General Public License as published by | |
11 | the Free Software Foundation; either version 2.1 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | systemd is distributed in the hope that it will be useful, but | |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | Lesser General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU Lesser General Public License | |
20 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
21 | ***/ | |
22 | ||
23 | #include <stdbool.h> | |
24 | ||
5da38d07 | 25 | #include "cgroup-util.h" |
a4c35b6b | 26 | #include "volatile-util.h" |
5da38d07 | 27 | |
4f086aab SU |
28 | typedef enum MountSettingsMask { |
29 | MOUNT_FATAL = 1 << 0, /* if set, a mount error is considered fatal */ | |
30 | MOUNT_USE_USERNS = 1 << 1, /* if set, mounts are patched considering uid/gid shifts in a user namespace */ | |
31 | MOUNT_IN_USERNS = 1 << 2, /* if set, the mount is executed in the inner child, otherwise in the outer child */ | |
32 | MOUNT_APPLY_APIVFS_RO = 1 << 3, /* if set, /proc/sys, and /sysfs will be mounted read-only, otherwise read-write. */ | |
33 | MOUNT_APPLY_APIVFS_NETNS = 1 << 4, /* if set, /proc/sys/net will be mounted read-write. | |
34 | Works only if MOUNT_APPLY_APIVFS_RO is also set. */ | |
35 | } MountSettingsMask; | |
36 | ||
e83bebef LP |
37 | typedef enum CustomMountType { |
38 | CUSTOM_MOUNT_BIND, | |
39 | CUSTOM_MOUNT_TMPFS, | |
40 | CUSTOM_MOUNT_OVERLAY, | |
41 | _CUSTOM_MOUNT_TYPE_MAX, | |
42 | _CUSTOM_MOUNT_TYPE_INVALID = -1 | |
43 | } CustomMountType; | |
44 | ||
45 | typedef struct CustomMount { | |
46 | CustomMountType type; | |
47 | bool read_only; | |
48 | char *source; /* for overlayfs this is the upper directory */ | |
49 | char *destination; | |
50 | char *options; | |
51 | char *work_dir; | |
52 | char **lower; | |
c7a4890c | 53 | char *rm_rf_tmpdir; |
e83bebef LP |
54 | } CustomMount; |
55 | ||
56 | CustomMount* custom_mount_add(CustomMount **l, unsigned *n, CustomMountType t); | |
e83bebef | 57 | void custom_mount_free_all(CustomMount *l, unsigned n); |
86c0dd4a | 58 | int custom_mount_prepare_all(const char *dest, CustomMount *l, unsigned n); |
ad85779a | 59 | |
e83bebef LP |
60 | int bind_mount_parse(CustomMount **l, unsigned *n, const char *s, bool read_only); |
61 | int tmpfs_mount_parse(CustomMount **l, unsigned *n, const char *s); | |
ad85779a | 62 | int overlay_mount_parse(CustomMount **l, unsigned *n, const char *s, bool read_only); |
e83bebef | 63 | |
4f086aab SU |
64 | int mount_all(const char *dest, MountSettingsMask mount_settings, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context); |
65 | int mount_sysfs(const char *dest, MountSettingsMask mount_settings); | |
e83bebef | 66 | |
5da38d07 TH |
67 | int mount_cgroups(const char *dest, CGroupUnified unified_requested, bool userns, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context, bool use_cgns); |
68 | int mount_systemd_cgroup_writable(const char *dest, CGroupUnified unified_requested); | |
e83bebef LP |
69 | |
70 | int mount_custom(const char *dest, CustomMount *mounts, unsigned n, bool userns, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context); | |
71 | ||
72 | int setup_volatile(const char *directory, VolatileMode mode, bool userns, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context); | |
73 | int setup_volatile_state(const char *directory, VolatileMode mode, bool userns, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context); | |
b53ede69 PW |
74 | |
75 | int pivot_root_parse(char **pivot_root_new, char **pivot_root_old, const char *s); | |
76 | int setup_pivot_root(const char *directory, const char *pivot_root_new, const char *pivot_root_old); |