Lennart Poettering
a1dfd585c4
The new helper returns whether the settings file had *any* networking setting configured at all. We already have a similar helper settings_private_network() which returns a similar result. The difference is that the new helper will return true when the private network was explicitly turned off, while the old one will only return true if configured and enabled. We'll reuse the helper a 2nd time later on, but even without it it makes things a bit more readable.
289 lines
9.8 KiB
C
289 lines
9.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <sched.h>
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#include <stdio.h>
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#if HAVE_SECCOMP
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#include <seccomp.h>
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#endif
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#include "sd-bus.h"
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#include "sd-id128.h"
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#include "capability-util.h"
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#include "conf-parser.h"
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#include "cpu-set-util.h"
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#include "macro.h"
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#include "missing_resource.h"
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#include "nspawn-expose-ports.h"
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#include "nspawn-mount.h"
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#include "time-util.h"
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typedef enum StartMode {
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START_PID1, /* Run parameters as command line as process 1 */
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START_PID2, /* Use stub init process as PID 1, run parameters as command line as process 2 */
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START_BOOT, /* Search for init system, pass arguments as parameters */
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_START_MODE_MAX,
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_START_MODE_INVALID = -EINVAL,
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} StartMode;
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typedef enum UserNamespaceMode {
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USER_NAMESPACE_NO,
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USER_NAMESPACE_FIXED,
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USER_NAMESPACE_PICK,
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_USER_NAMESPACE_MODE_MAX,
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_USER_NAMESPACE_MODE_INVALID = -EINVAL,
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} UserNamespaceMode;
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typedef enum UserNamespaceOwnership {
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USER_NAMESPACE_OWNERSHIP_OFF,
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USER_NAMESPACE_OWNERSHIP_CHOWN,
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USER_NAMESPACE_OWNERSHIP_MAP,
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USER_NAMESPACE_OWNERSHIP_AUTO,
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_USER_NAMESPACE_OWNERSHIP_MAX,
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_USER_NAMESPACE_OWNERSHIP_INVALID = -1,
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} UserNamespaceOwnership;
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typedef enum ResolvConfMode {
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RESOLV_CONF_OFF,
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RESOLV_CONF_COPY_HOST, /* /etc/resolv.conf */
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RESOLV_CONF_COPY_STATIC, /* /usr/lib/systemd/resolv.conf */
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RESOLV_CONF_COPY_UPLINK, /* /run/systemd/resolve/resolv.conf */
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RESOLV_CONF_COPY_STUB, /* /run/systemd/resolve/stub-resolv.conf */
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RESOLV_CONF_REPLACE_HOST,
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RESOLV_CONF_REPLACE_STATIC,
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RESOLV_CONF_REPLACE_UPLINK,
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RESOLV_CONF_REPLACE_STUB,
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RESOLV_CONF_BIND_HOST,
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RESOLV_CONF_BIND_STATIC,
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RESOLV_CONF_BIND_UPLINK,
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RESOLV_CONF_BIND_STUB,
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RESOLV_CONF_DELETE,
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RESOLV_CONF_AUTO,
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_RESOLV_CONF_MODE_MAX,
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_RESOLV_CONF_MODE_INVALID = -EINVAL,
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} ResolvConfMode;
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typedef enum LinkJournal {
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LINK_NO,
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LINK_AUTO,
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LINK_HOST,
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LINK_GUEST,
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_LINK_JOURNAL_MAX,
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_LINK_JOURNAL_INVALID = -EINVAL,
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} LinkJournal;
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typedef enum TimezoneMode {
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TIMEZONE_OFF,
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TIMEZONE_COPY,
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TIMEZONE_BIND,
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TIMEZONE_SYMLINK,
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TIMEZONE_DELETE,
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TIMEZONE_AUTO,
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_TIMEZONE_MODE_MAX,
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_TIMEZONE_MODE_INVALID = -EINVAL,
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} TimezoneMode;
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typedef enum ConsoleMode {
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CONSOLE_INTERACTIVE,
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CONSOLE_READ_ONLY,
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CONSOLE_PASSIVE,
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CONSOLE_PIPE,
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_CONSOLE_MODE_MAX,
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_CONSOLE_MODE_INVALID = -EINVAL,
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} ConsoleMode;
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typedef enum SettingsMask {
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SETTING_START_MODE = UINT64_C(1) << 0,
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SETTING_ENVIRONMENT = UINT64_C(1) << 1,
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SETTING_USER = UINT64_C(1) << 2,
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SETTING_CAPABILITY = UINT64_C(1) << 3,
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SETTING_KILL_SIGNAL = UINT64_C(1) << 4,
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SETTING_PERSONALITY = UINT64_C(1) << 5,
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SETTING_MACHINE_ID = UINT64_C(1) << 6,
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SETTING_NETWORK = UINT64_C(1) << 7,
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SETTING_EXPOSE_PORTS = UINT64_C(1) << 8,
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SETTING_READ_ONLY = UINT64_C(1) << 9,
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SETTING_VOLATILE_MODE = UINT64_C(1) << 10,
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SETTING_CUSTOM_MOUNTS = UINT64_C(1) << 11,
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SETTING_WORKING_DIRECTORY = UINT64_C(1) << 12,
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SETTING_USERNS = UINT64_C(1) << 13,
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SETTING_NOTIFY_READY = UINT64_C(1) << 14,
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SETTING_PIVOT_ROOT = UINT64_C(1) << 15,
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SETTING_SYSCALL_FILTER = UINT64_C(1) << 16,
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SETTING_HOSTNAME = UINT64_C(1) << 17,
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SETTING_NO_NEW_PRIVILEGES = UINT64_C(1) << 18,
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SETTING_OOM_SCORE_ADJUST = UINT64_C(1) << 19,
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SETTING_CPU_AFFINITY = UINT64_C(1) << 20,
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SETTING_RESOLV_CONF = UINT64_C(1) << 21,
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SETTING_LINK_JOURNAL = UINT64_C(1) << 22,
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SETTING_TIMEZONE = UINT64_C(1) << 23,
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SETTING_EPHEMERAL = UINT64_C(1) << 24,
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SETTING_SLICE = UINT64_C(1) << 25,
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SETTING_DIRECTORY = UINT64_C(1) << 26,
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SETTING_USE_CGNS = UINT64_C(1) << 27,
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SETTING_CLONE_NS_FLAGS = UINT64_C(1) << 28,
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SETTING_CONSOLE_MODE = UINT64_C(1) << 29,
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SETTING_CREDENTIALS = UINT64_C(1) << 30,
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SETTING_BIND_USER = UINT64_C(1) << 31,
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SETTING_SUPPRESS_SYNC = UINT64_C(1) << 32,
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SETTING_RLIMIT_FIRST = UINT64_C(1) << 33, /* we define one bit per resource limit here */
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SETTING_RLIMIT_LAST = UINT64_C(1) << (33 + _RLIMIT_MAX - 1),
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_SETTINGS_MASK_ALL = (UINT64_C(1) << (33 + _RLIMIT_MAX)) -1,
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_SETTING_FORCE_ENUM_WIDTH = UINT64_MAX
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} SettingsMask;
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/* We want to use SETTING_RLIMIT_FIRST in shifts, so make sure it is really 64 bits
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* when used in expressions. */
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#define SETTING_RLIMIT_FIRST ((uint64_t) SETTING_RLIMIT_FIRST)
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#define SETTING_RLIMIT_LAST ((uint64_t) SETTING_RLIMIT_LAST)
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assert_cc(sizeof(SettingsMask) == 8);
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assert_cc(sizeof(SETTING_RLIMIT_FIRST) == 8);
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assert_cc(sizeof(SETTING_RLIMIT_LAST) == 8);
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typedef struct DeviceNode {
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char *path;
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unsigned major;
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unsigned minor;
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mode_t mode;
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uid_t uid;
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gid_t gid;
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} DeviceNode;
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typedef struct OciHook {
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char *path;
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char **args;
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char **env;
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usec_t timeout;
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} OciHook;
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typedef struct Settings {
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/* [Exec] */
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StartMode start_mode;
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bool ephemeral;
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char **parameters;
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char **environment;
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char *user;
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uint64_t capability;
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uint64_t drop_capability;
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uint64_t ambient_capability;
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int kill_signal;
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unsigned long personality;
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sd_id128_t machine_id;
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char *working_directory;
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char *pivot_root_new;
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char *pivot_root_old;
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UserNamespaceMode userns_mode;
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uid_t uid_shift, uid_range;
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bool notify_ready;
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char **syscall_allow_list;
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char **syscall_deny_list;
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struct rlimit *rlimit[_RLIMIT_MAX];
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char *hostname;
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int no_new_privileges;
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int oom_score_adjust;
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bool oom_score_adjust_set;
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CPUSet cpu_set;
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ResolvConfMode resolv_conf;
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LinkJournal link_journal;
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bool link_journal_try;
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TimezoneMode timezone;
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bool suppress_sync;
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/* [Files] */
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int read_only;
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VolatileMode volatile_mode;
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CustomMount *custom_mounts;
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size_t n_custom_mounts;
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UserNamespaceOwnership userns_ownership;
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char **bind_user;
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/* [Network] */
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int private_network;
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int network_veth;
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char *network_bridge;
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char *network_zone;
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char **network_interfaces;
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char **network_macvlan;
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char **network_ipvlan;
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char **network_veth_extra;
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ExposePort *expose_ports;
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/* Additional fields, that are specific to OCI runtime case */
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char *bundle;
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char *root;
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OciHook *oci_hooks_prestart, *oci_hooks_poststart, *oci_hooks_poststop;
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size_t n_oci_hooks_prestart, n_oci_hooks_poststart, n_oci_hooks_poststop;
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char *slice;
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sd_bus_message *properties;
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CapabilityQuintet full_capabilities;
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uid_t uid;
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gid_t gid;
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gid_t *supplementary_gids;
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size_t n_supplementary_gids;
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unsigned console_width, console_height;
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ConsoleMode console_mode;
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DeviceNode *extra_nodes;
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size_t n_extra_nodes;
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unsigned long clone_ns_flags;
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char *network_namespace_path;
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int use_cgns;
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char **sysctl;
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#if HAVE_SECCOMP
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scmp_filter_ctx seccomp;
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#endif
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} Settings;
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Settings *settings_new(void);
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int settings_load(FILE *f, const char *path, Settings **ret);
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Settings* settings_free(Settings *s);
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bool settings_network_veth(Settings *s);
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bool settings_private_network(Settings *s);
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bool settings_network_configured(Settings *s);
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int settings_allocate_properties(Settings *s);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Settings*, settings_free);
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const struct ConfigPerfItem* nspawn_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
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CONFIG_PARSER_PROTOTYPE(config_parse_capability);
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CONFIG_PARSER_PROTOTYPE(config_parse_expose_port);
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CONFIG_PARSER_PROTOTYPE(config_parse_volatile_mode);
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CONFIG_PARSER_PROTOTYPE(config_parse_pivot_root);
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CONFIG_PARSER_PROTOTYPE(config_parse_bind);
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CONFIG_PARSER_PROTOTYPE(config_parse_tmpfs);
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CONFIG_PARSER_PROTOTYPE(config_parse_overlay);
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CONFIG_PARSER_PROTOTYPE(config_parse_inaccessible);
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CONFIG_PARSER_PROTOTYPE(config_parse_veth_extra);
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CONFIG_PARSER_PROTOTYPE(config_parse_network_zone);
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CONFIG_PARSER_PROTOTYPE(config_parse_boot);
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CONFIG_PARSER_PROTOTYPE(config_parse_pid2);
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CONFIG_PARSER_PROTOTYPE(config_parse_private_users);
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CONFIG_PARSER_PROTOTYPE(config_parse_syscall_filter);
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CONFIG_PARSER_PROTOTYPE(config_parse_hostname);
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CONFIG_PARSER_PROTOTYPE(config_parse_oom_score_adjust);
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CONFIG_PARSER_PROTOTYPE(config_parse_cpu_affinity);
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CONFIG_PARSER_PROTOTYPE(config_parse_resolv_conf);
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CONFIG_PARSER_PROTOTYPE(config_parse_link_journal);
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CONFIG_PARSER_PROTOTYPE(config_parse_timezone);
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CONFIG_PARSER_PROTOTYPE(config_parse_userns_chown);
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CONFIG_PARSER_PROTOTYPE(config_parse_userns_ownership);
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CONFIG_PARSER_PROTOTYPE(config_parse_bind_user);
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const char *resolv_conf_mode_to_string(ResolvConfMode a) _const_;
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ResolvConfMode resolv_conf_mode_from_string(const char *s) _pure_;
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const char *timezone_mode_to_string(TimezoneMode a) _const_;
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TimezoneMode timezone_mode_from_string(const char *s) _pure_;
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const char *user_namespace_ownership_to_string(UserNamespaceOwnership a) _const_;
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UserNamespaceOwnership user_namespace_ownership_from_string(const char *s) _pure_;
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int parse_link_journal(const char *s, LinkJournal *ret_mode, bool *ret_try);
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void device_node_array_free(DeviceNode *node, size_t n);
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