3401419bb8
UID/GID mapping with userns can be arbitrarily complex. Let's break this down to a single admin-friendly parameter: let's expose the UID/GID shift of a container via a new bus call for each container, and let's show this as part of "machinectl status" if it is not 0. This should work for pretty much all real-life full OS container setups (i.e. the stuff machined is suppose to be useful for). For everything else we generate a clean error, clarifying that we can't expose the mapping.
113 lines
3 KiB
C
113 lines
3 KiB
C
#pragma once
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/***
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This file is part of systemd.
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Copyright 2013 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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typedef struct Machine Machine;
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typedef enum KillWho KillWho;
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#include "list.h"
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#include "machined.h"
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#include "operation.h"
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typedef enum MachineState {
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MACHINE_OPENING, /* Machine is being registered */
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MACHINE_RUNNING, /* Machine is running */
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MACHINE_CLOSING, /* Machine is terminating */
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_MACHINE_STATE_MAX,
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_MACHINE_STATE_INVALID = -1
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} MachineState;
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typedef enum MachineClass {
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MACHINE_CONTAINER,
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MACHINE_VM,
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MACHINE_HOST,
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_MACHINE_CLASS_MAX,
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_MACHINE_CLASS_INVALID = -1
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} MachineClass;
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enum KillWho {
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KILL_LEADER,
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KILL_ALL,
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_KILL_WHO_MAX,
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_KILL_WHO_INVALID = -1
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};
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struct Machine {
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Manager *manager;
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char *name;
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sd_id128_t id;
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MachineClass class;
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char *state_file;
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char *service;
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char *root_directory;
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char *unit;
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char *scope_job;
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pid_t leader;
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dual_timestamp timestamp;
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bool in_gc_queue:1;
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bool started:1;
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bool stopping:1;
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sd_bus_message *create_message;
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int *netif;
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unsigned n_netif;
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LIST_HEAD(Operation, operations);
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LIST_FIELDS(Machine, gc_queue);
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};
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Machine* machine_new(Manager *manager, MachineClass class, const char *name);
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void machine_free(Machine *m);
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bool machine_check_gc(Machine *m, bool drop_not_started);
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void machine_add_to_gc_queue(Machine *m);
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int machine_start(Machine *m, sd_bus_message *properties, sd_bus_error *error);
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int machine_stop(Machine *m);
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int machine_finalize(Machine *m);
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int machine_save(Machine *m);
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int machine_load(Machine *m);
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int machine_kill(Machine *m, KillWho who, int signo);
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void machine_release_unit(Machine *m);
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MachineState machine_get_state(Machine *u);
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const char* machine_class_to_string(MachineClass t) _const_;
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MachineClass machine_class_from_string(const char *s) _pure_;
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const char* machine_state_to_string(MachineState t) _const_;
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MachineState machine_state_from_string(const char *s) _pure_;
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const char *kill_who_to_string(KillWho k) _const_;
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KillWho kill_who_from_string(const char *s) _pure_;
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int machine_openpt(Machine *m, int flags);
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int machine_open_terminal(Machine *m, const char *path, int mode);
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int machine_get_uid_shift(Machine *m, uid_t *ret);
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