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Diffstat (limited to '')
| -rw-r--r-- | src/nspawn/nspawn-settings.h | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/src/nspawn/nspawn-settings.h b/src/nspawn/nspawn-settings.h new file mode 100644 index 0000000..004b663 --- /dev/null +++ b/src/nspawn/nspawn-settings.h @@ -0,0 +1,287 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include <sched.h> +#include <stdio.h> + +#if HAVE_SECCOMP +#include <seccomp.h> +#endif + +#include "sd-bus.h" +#include "sd-id128.h" + +#include "capability-util.h" +#include "conf-parser.h" +#include "cpu-set-util.h" +#include "macro.h" +#include "missing_resource.h" +#include "nspawn-expose-ports.h" +#include "nspawn-mount.h" +#include "time-util.h" + +typedef enum StartMode { + START_PID1, /* Run parameters as command line as process 1 */ + START_PID2, /* Use stub init process as PID 1, run parameters as command line as process 2 */ + START_BOOT, /* Search for init system, pass arguments as parameters */ + _START_MODE_MAX, + _START_MODE_INVALID = -EINVAL, +} StartMode; + +typedef enum UserNamespaceMode { + USER_NAMESPACE_NO, + USER_NAMESPACE_FIXED, + USER_NAMESPACE_PICK, + _USER_NAMESPACE_MODE_MAX, + _USER_NAMESPACE_MODE_INVALID = -EINVAL, +} UserNamespaceMode; + +typedef enum UserNamespaceOwnership { + USER_NAMESPACE_OWNERSHIP_OFF, + USER_NAMESPACE_OWNERSHIP_CHOWN, + USER_NAMESPACE_OWNERSHIP_MAP, + USER_NAMESPACE_OWNERSHIP_AUTO, + _USER_NAMESPACE_OWNERSHIP_MAX, + _USER_NAMESPACE_OWNERSHIP_INVALID = -1, +} UserNamespaceOwnership; + +typedef enum ResolvConfMode { + RESOLV_CONF_OFF, + RESOLV_CONF_COPY_HOST, /* /etc/resolv.conf */ + RESOLV_CONF_COPY_STATIC, /* /usr/lib/systemd/resolv.conf */ + RESOLV_CONF_COPY_UPLINK, /* /run/systemd/resolve/resolv.conf */ + RESOLV_CONF_COPY_STUB, /* /run/systemd/resolve/stub-resolv.conf */ + RESOLV_CONF_REPLACE_HOST, + RESOLV_CONF_REPLACE_STATIC, + RESOLV_CONF_REPLACE_UPLINK, + RESOLV_CONF_REPLACE_STUB, + RESOLV_CONF_BIND_HOST, + RESOLV_CONF_BIND_STATIC, + RESOLV_CONF_BIND_UPLINK, + RESOLV_CONF_BIND_STUB, + RESOLV_CONF_DELETE, + RESOLV_CONF_AUTO, + _RESOLV_CONF_MODE_MAX, + _RESOLV_CONF_MODE_INVALID = -EINVAL, +} ResolvConfMode; + +typedef enum LinkJournal { + LINK_NO, + LINK_AUTO, + LINK_HOST, + LINK_GUEST, + _LINK_JOURNAL_MAX, + _LINK_JOURNAL_INVALID = -EINVAL, +} LinkJournal; + +typedef enum TimezoneMode { + TIMEZONE_OFF, + TIMEZONE_COPY, + TIMEZONE_BIND, + TIMEZONE_SYMLINK, + TIMEZONE_DELETE, + TIMEZONE_AUTO, + _TIMEZONE_MODE_MAX, + _TIMEZONE_MODE_INVALID = -EINVAL, +} TimezoneMode; + +typedef enum ConsoleMode { + CONSOLE_INTERACTIVE, + CONSOLE_READ_ONLY, + CONSOLE_PASSIVE, + CONSOLE_PIPE, + _CONSOLE_MODE_MAX, + _CONSOLE_MODE_INVALID = -EINVAL, +} ConsoleMode; + +typedef enum SettingsMask { + SETTING_START_MODE = UINT64_C(1) << 0, + SETTING_ENVIRONMENT = UINT64_C(1) << 1, + SETTING_USER = UINT64_C(1) << 2, + SETTING_CAPABILITY = UINT64_C(1) << 3, + SETTING_KILL_SIGNAL = UINT64_C(1) << 4, + SETTING_PERSONALITY = UINT64_C(1) << 5, + SETTING_MACHINE_ID = UINT64_C(1) << 6, + SETTING_NETWORK = UINT64_C(1) << 7, + SETTING_EXPOSE_PORTS = UINT64_C(1) << 8, + SETTING_READ_ONLY = UINT64_C(1) << 9, + SETTING_VOLATILE_MODE = UINT64_C(1) << 10, + SETTING_CUSTOM_MOUNTS = UINT64_C(1) << 11, + SETTING_WORKING_DIRECTORY = UINT64_C(1) << 12, + SETTING_USERNS = UINT64_C(1) << 13, + SETTING_NOTIFY_READY = UINT64_C(1) << 14, + SETTING_PIVOT_ROOT = UINT64_C(1) << 15, + SETTING_SYSCALL_FILTER = UINT64_C(1) << 16, + SETTING_HOSTNAME = UINT64_C(1) << 17, + SETTING_NO_NEW_PRIVILEGES = UINT64_C(1) << 18, + SETTING_OOM_SCORE_ADJUST = UINT64_C(1) << 19, + SETTING_CPU_AFFINITY = UINT64_C(1) << 20, + SETTING_RESOLV_CONF = UINT64_C(1) << 21, + SETTING_LINK_JOURNAL = UINT64_C(1) << 22, + SETTING_TIMEZONE = UINT64_C(1) << 23, + SETTING_EPHEMERAL = UINT64_C(1) << 24, + SETTING_SLICE = UINT64_C(1) << 25, + SETTING_DIRECTORY = UINT64_C(1) << 26, + SETTING_USE_CGNS = UINT64_C(1) << 27, + SETTING_CLONE_NS_FLAGS = UINT64_C(1) << 28, + SETTING_CONSOLE_MODE = UINT64_C(1) << 29, + SETTING_CREDENTIALS = UINT64_C(1) << 30, + SETTING_BIND_USER = UINT64_C(1) << 31, + SETTING_SUPPRESS_SYNC = UINT64_C(1) << 32, + SETTING_RLIMIT_FIRST = UINT64_C(1) << 33, /* we define one bit per resource limit here */ + SETTING_RLIMIT_LAST = UINT64_C(1) << (33 + _RLIMIT_MAX - 1), + _SETTINGS_MASK_ALL = (UINT64_C(1) << (33 + _RLIMIT_MAX)) -1, + _SETTING_FORCE_ENUM_WIDTH = UINT64_MAX +} SettingsMask; + +/* We want to use SETTING_RLIMIT_FIRST in shifts, so make sure it is really 64 bits + * when used in expressions. */ +#define SETTING_RLIMIT_FIRST ((uint64_t) SETTING_RLIMIT_FIRST) +#define SETTING_RLIMIT_LAST ((uint64_t) SETTING_RLIMIT_LAST) + +assert_cc(sizeof(SettingsMask) == 8); +assert_cc(sizeof(SETTING_RLIMIT_FIRST) == 8); +assert_cc(sizeof(SETTING_RLIMIT_LAST) == 8); + +typedef struct DeviceNode { + char *path; + unsigned major; + unsigned minor; + mode_t mode; + uid_t uid; + gid_t gid; +} DeviceNode; + +typedef struct OciHook { + char *path; + char **args; + char **env; + usec_t timeout; +} OciHook; + +typedef struct Settings { + /* [Exec] */ + StartMode start_mode; + int ephemeral; + char **parameters; + char **environment; + char *user; + uint64_t capability; + uint64_t drop_capability; + uint64_t ambient_capability; + int kill_signal; + unsigned long personality; + sd_id128_t machine_id; + char *working_directory; + char *pivot_root_new; + char *pivot_root_old; + UserNamespaceMode userns_mode; + uid_t uid_shift, uid_range; + int notify_ready; + char **syscall_allow_list; + char **syscall_deny_list; + struct rlimit *rlimit[_RLIMIT_MAX]; + char *hostname; + int no_new_privileges; + int oom_score_adjust; + bool oom_score_adjust_set; + CPUSet cpu_set; + ResolvConfMode resolv_conf; + LinkJournal link_journal; + bool link_journal_try; + TimezoneMode timezone; + int suppress_sync; + + /* [Files] */ + int read_only; + VolatileMode volatile_mode; + CustomMount *custom_mounts; + size_t n_custom_mounts; + UserNamespaceOwnership userns_ownership; + char **bind_user; + + /* [Network] */ + int private_network; + int network_veth; + char *network_bridge; + char *network_zone; + char **network_interfaces; + char **network_macvlan; + char **network_ipvlan; + char **network_veth_extra; + ExposePort *expose_ports; + + /* Additional fields, that are specific to OCI runtime case */ + char *bundle; + char *root; + OciHook *oci_hooks_prestart, *oci_hooks_poststart, *oci_hooks_poststop; + size_t n_oci_hooks_prestart, n_oci_hooks_poststart, n_oci_hooks_poststop; + char *slice; + sd_bus_message *properties; + CapabilityQuintet full_capabilities; + uid_t uid; + gid_t gid; + gid_t *supplementary_gids; + size_t n_supplementary_gids; + unsigned console_width, console_height; + ConsoleMode console_mode; + DeviceNode *extra_nodes; + size_t n_extra_nodes; + unsigned long clone_ns_flags; + char *network_namespace_path; + int use_cgns; + char **sysctl; +#if HAVE_SECCOMP + scmp_filter_ctx seccomp; +#endif +} Settings; + +Settings *settings_new(void); +int settings_load(FILE *f, const char *path, Settings **ret); +Settings* settings_free(Settings *s); + +bool settings_network_veth(Settings *s); +bool settings_private_network(Settings *s); +bool settings_network_configured(Settings *s); + +int settings_allocate_properties(Settings *s); + +DEFINE_TRIVIAL_CLEANUP_FUNC(Settings*, settings_free); + +const struct ConfigPerfItem* nspawn_gperf_lookup(const char *key, GPERF_LEN_TYPE length); + +CONFIG_PARSER_PROTOTYPE(config_parse_capability); +CONFIG_PARSER_PROTOTYPE(config_parse_expose_port); +CONFIG_PARSER_PROTOTYPE(config_parse_volatile_mode); +CONFIG_PARSER_PROTOTYPE(config_parse_pivot_root); +CONFIG_PARSER_PROTOTYPE(config_parse_bind); +CONFIG_PARSER_PROTOTYPE(config_parse_tmpfs); +CONFIG_PARSER_PROTOTYPE(config_parse_overlay); +CONFIG_PARSER_PROTOTYPE(config_parse_inaccessible); +CONFIG_PARSER_PROTOTYPE(config_parse_veth_extra); +CONFIG_PARSER_PROTOTYPE(config_parse_network_zone); +CONFIG_PARSER_PROTOTYPE(config_parse_boot); +CONFIG_PARSER_PROTOTYPE(config_parse_pid2); +CONFIG_PARSER_PROTOTYPE(config_parse_private_users); +CONFIG_PARSER_PROTOTYPE(config_parse_syscall_filter); +CONFIG_PARSER_PROTOTYPE(config_parse_oom_score_adjust); +CONFIG_PARSER_PROTOTYPE(config_parse_cpu_affinity); +CONFIG_PARSER_PROTOTYPE(config_parse_resolv_conf); +CONFIG_PARSER_PROTOTYPE(config_parse_link_journal); +CONFIG_PARSER_PROTOTYPE(config_parse_timezone); +CONFIG_PARSER_PROTOTYPE(config_parse_userns_chown); +CONFIG_PARSER_PROTOTYPE(config_parse_userns_ownership); +CONFIG_PARSER_PROTOTYPE(config_parse_bind_user); + +const char *resolv_conf_mode_to_string(ResolvConfMode a) _const_; +ResolvConfMode resolv_conf_mode_from_string(const char *s) _pure_; + +const char *timezone_mode_to_string(TimezoneMode a) _const_; +TimezoneMode timezone_mode_from_string(const char *s) _pure_; + +const char *user_namespace_ownership_to_string(UserNamespaceOwnership a) _const_; +UserNamespaceOwnership user_namespace_ownership_from_string(const char *s) _pure_; + +int parse_link_journal(const char *s, LinkJournal *ret_mode, bool *ret_try); + +void device_node_array_free(DeviceNode *node, size_t n); |