73 lines
3.3 KiB
C
73 lines
3.3 KiB
C
#pragma once
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/***
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This file is part of systemd.
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Copyright 2015 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 "cgroup-util.h"
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#include "volatile-util.h"
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typedef enum MountSettingsMask {
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MOUNT_FATAL = 1 << 0, /* if set, a mount error is considered fatal */
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MOUNT_USE_USERNS = 1 << 1, /* if set, mounts are patched considering uid/gid shifts in a user namespace */
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MOUNT_IN_USERNS = 1 << 2, /* if set, the mount is executed in the inner child, otherwise in the outer child */
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MOUNT_APPLY_APIVFS_RO = 1 << 3, /* if set, /proc/sys, and /sysfs will be mounted read-only, otherwise read-write. */
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MOUNT_APPLY_APIVFS_NETNS = 1 << 4, /* if set, /proc/sys/net will be mounted read-write.
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Works only if MOUNT_APPLY_APIVFS_RO is also set. */
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} MountSettingsMask;
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typedef enum CustomMountType {
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CUSTOM_MOUNT_BIND,
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CUSTOM_MOUNT_TMPFS,
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CUSTOM_MOUNT_OVERLAY,
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_CUSTOM_MOUNT_TYPE_MAX,
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_CUSTOM_MOUNT_TYPE_INVALID = -1
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} CustomMountType;
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typedef struct CustomMount {
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CustomMountType type;
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bool read_only;
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char *source; /* for overlayfs this is the upper directory */
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char *destination;
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char *options;
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char *work_dir;
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char **lower;
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char *rm_rf_tmpdir;
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} CustomMount;
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CustomMount* custom_mount_add(CustomMount **l, unsigned *n, CustomMountType t);
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void custom_mount_free_all(CustomMount *l, unsigned n);
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int custom_mount_prepare_all(const char *dest, CustomMount *l, unsigned n);
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int bind_mount_parse(CustomMount **l, unsigned *n, const char *s, bool read_only);
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int tmpfs_mount_parse(CustomMount **l, unsigned *n, const char *s);
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int overlay_mount_parse(CustomMount **l, unsigned *n, const char *s, bool read_only);
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int mount_all(const char *dest, MountSettingsMask mount_settings, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context);
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int mount_sysfs(const char *dest, MountSettingsMask mount_settings);
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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);
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int mount_systemd_cgroup_writable(const char *dest, CGroupUnified unified_requested);
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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);
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int setup_volatile(const char *directory, VolatileMode mode, bool userns, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context);
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int setup_volatile_state(const char *directory, VolatileMode mode, bool userns, uid_t uid_shift, uid_t uid_range, const char *selinux_apifs_context);
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