/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "sd-bus.h"
#include "log.h"
#include "util.h"
#include "macro.h"
#include "pager.h"
#include "bus-util.h"
#include "bus-error.h"
#include "build.h"
#include "strv.h"
#include "unit-name.h"
#include "cgroup-show.h"
#include "cgroup-util.h"
#include "ptyfwd.h"
#include "event-util.h"
#include "path-util.h"
#include "mkdir.h"
#include "copy.h"
#include "verbs.h"
static char **arg_property = NULL;
static bool arg_all = false;
static bool arg_full = false;
static bool arg_no_pager = false;
static bool arg_legend = true;
static const char *arg_kill_who = NULL;
static int arg_signal = SIGTERM;
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static char *arg_host = NULL;
static bool arg_read_only = false;
static bool arg_mkdir = false;
static void pager_open_if_enabled(void) {
/* Cache result before we open the pager */
if (arg_no_pager)
return;
pager_open(false);
}
static int list_machines(int argc, char *argv[], void *userdata) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
const char *name, *class, *service, *object;
sd_bus *bus = userdata;
unsigned k = 0;
int r;
assert(bus);
pager_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"ListMachines",
&error,
&reply,
"");
if (r < 0) {
log_error("Could not get machines: %s", bus_error_message(&error, -r));
return r;
}
if (arg_legend)
printf("%-32s %-9s %-16s\n", "MACHINE", "CONTAINER", "SERVICE");
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssso)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(reply, "(ssso)", &name, &class, &service, &object)) > 0) {
printf("%-32s %-9s %-16s\n", name, class, service);
k++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("\n%u machines listed.\n", k);
return 0;
}
typedef struct ImageInfo {
const char *name;
const char *type;
bool read_only;
usec_t crtime;
usec_t mtime;
uint64_t size;
} ImageInfo;
static int compare_image_info(const void *a, const void *b) {
const ImageInfo *x = a, *y = b;
return strcmp(x->name, y->name);
}
static int list_images(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
size_t max_name = strlen("NAME"), max_type = strlen("TYPE"), max_size = strlen("SIZE"), max_crtime = strlen("CREATED"), max_mtime = strlen("MODIFIED");
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ ImageInfo *images = NULL;
size_t n_images = 0, n_allocated = 0, j;
const char *name, *type, *object;
sd_bus *bus = userdata;
uint64_t crtime, mtime, size;
int read_only, r;
assert(bus);
pager_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"ListImages",
&error,
&reply,
"");
if (r < 0) {
log_error("Could not get images: %s", bus_error_message(&error, -r));
return r;
}
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssbttto)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(reply, "(ssbttto)", &name, &type, &read_only, &crtime, &mtime, &size, &object)) > 0) {
char buf[MAX(FORMAT_TIMESTAMP_MAX, FORMAT_BYTES_MAX)];
size_t l;
if (name[0] == '.' && !arg_all)
continue;
if (!GREEDY_REALLOC(images, n_allocated, n_images + 1))
return log_oom();
images[n_images].name = name;
images[n_images].type = type;
images[n_images].read_only = read_only;
images[n_images].crtime = crtime;
images[n_images].mtime = mtime;
images[n_images].size = size;
l = strlen(name);
if (l > max_name)
max_name = l;
l = strlen(type);
if (l > max_type)
max_type = l;
if (crtime != 0) {
l = strlen(strna(format_timestamp(buf, sizeof(buf), crtime)));
if (l > max_crtime)
max_crtime = l;
}
if (mtime != 0) {
l = strlen(strna(format_timestamp(buf, sizeof(buf), mtime)));
if (l > max_mtime)
max_mtime = l;
}
if (size != (uint64_t) -1) {
l = strlen(strna(format_bytes(buf, sizeof(buf), size)));
if (l > max_size)
max_size = l;
}
n_images++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
qsort_safe(images, n_images, sizeof(ImageInfo), compare_image_info);
if (arg_legend)
printf("%-*s %-*s %-3s %-*s %-*s %-*s\n",
(int) max_name, "NAME",
(int) max_type, "TYPE",
"RO",
(int) max_size, "SIZE",
(int) max_crtime, "CREATED",
(int) max_mtime, "MODIFIED");
for (j = 0; j < n_images; j++) {
char crtime_buf[FORMAT_TIMESTAMP_MAX], mtime_buf[FORMAT_TIMESTAMP_MAX], size_buf[FORMAT_BYTES_MAX];
printf("%-*s %-*s %s%-3s%s %-*s %-*s %-*s\n",
(int) max_name, images[j].name,
(int) max_type, images[j].type,
images[j].read_only ? ansi_highlight_red() : "", yes_no(images[j].read_only), images[j].read_only ? ansi_highlight_off() : "",
(int) max_size, strna(format_bytes(size_buf, sizeof(size_buf), images[j].size)),
(int) max_crtime, strna(format_timestamp(crtime_buf, sizeof(crtime_buf), images[j].crtime)),
(int) max_mtime, strna(format_timestamp(mtime_buf, sizeof(mtime_buf), images[j].mtime)));
}
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("\n%zu images listed.\n", n_images);
return 0;
}
static int show_unit_cgroup(sd_bus *bus, const char *unit, pid_t leader) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *path = NULL;
const char *cgroup;
int r, output_flags;
unsigned c;
assert(bus);
assert(unit);
if (arg_transport == BUS_TRANSPORT_REMOTE)
return 0;
path = unit_dbus_path_from_name(unit);
if (!path)
return log_oom();
r = sd_bus_get_property(
bus,
"org.freedesktop.systemd1",
path,
endswith(unit, ".scope") ? "org.freedesktop.systemd1.Scope" : "org.freedesktop.systemd1.Service",
"ControlGroup",
&error,
&reply,
"s");
if (r < 0) {
log_error("Failed to query ControlGroup: %s", bus_error_message(&error, -r));
return r;
}
r = sd_bus_message_read(reply, "s", &cgroup);
if (r < 0)
return bus_log_parse_error(r);
if (isempty(cgroup))
return 0;
if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup, false) != 0 && leader <= 0)
return 0;
output_flags =
arg_all * OUTPUT_SHOW_ALL |
arg_full * OUTPUT_FULL_WIDTH;
c = columns();
if (c > 18)
c -= 18;
else
c = 0;
show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t ", c, false, &leader, leader > 0, output_flags);
return 0;
}
static int print_addresses(sd_bus *bus, const char *name, int ifi, const char *prefix, const char *prefix2) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
int r;
assert(bus);
assert(name);
assert(prefix);
assert(prefix2);
r = sd_bus_call_method(bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"GetMachineAddresses",
NULL,
&reply,
"s", name);
if (r < 0)
return r;
r = sd_bus_message_enter_container(reply, 'a', "(iay)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_enter_container(reply, 'r', "iay")) > 0) {
int family;
const void *a;
size_t sz;
char buffer[MAX(INET6_ADDRSTRLEN, INET_ADDRSTRLEN)];
r = sd_bus_message_read(reply, "i", &family);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_read_array(reply, 'y', &a, &sz);
if (r < 0)
return bus_log_parse_error(r);
fputs(prefix, stdout);
fputs(inet_ntop(family, a, buffer, sizeof(buffer)), stdout);
if (family == AF_INET6 && ifi > 0)
printf("%%%i", ifi);
fputc('\n', stdout);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (prefix != prefix2)
prefix = prefix2;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
return 0;
}
static int print_os_release(sd_bus *bus, const char *name, const char *prefix) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
const char *k, *v, *pretty = NULL;
int r;
assert(bus);
assert(name);
assert(prefix);
r = sd_bus_call_method(bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"GetMachineOSRelease",
NULL,
&reply,
"s", name);
if (r < 0)
return r;
r = sd_bus_message_enter_container(reply, 'a', "{ss}");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(reply, "{ss}", &k, &v)) > 0) {
if (streq(k, "PRETTY_NAME"))
pretty = v;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
if (pretty)
printf("%s%s\n", prefix, pretty);
return 0;
}
typedef struct MachineStatusInfo {
char *name;
sd_id128_t id;
char *class;
char *service;
char *unit;
char *root_directory;
pid_t leader;
usec_t timestamp;
int *netif;
unsigned n_netif;
} MachineStatusInfo;
static void print_machine_status_info(sd_bus *bus, MachineStatusInfo *i) {
char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
char since2[FORMAT_TIMESTAMP_MAX], *s2;
int ifi = -1;
assert(bus);
assert(i);
fputs(strna(i->name), stdout);
if (!sd_id128_equal(i->id, SD_ID128_NULL))
printf("(" SD_ID128_FORMAT_STR ")\n", SD_ID128_FORMAT_VAL(i->id));
else
putchar('\n');
s1 = format_timestamp_relative(since1, sizeof(since1), i->timestamp);
s2 = format_timestamp(since2, sizeof(since2), i->timestamp);
if (s1)
printf("\t Since: %s; %s\n", s2, s1);
else if (s2)
printf("\t Since: %s\n", s2);
if (i->leader > 0) {
_cleanup_free_ char *t = NULL;
printf("\t Leader: %u", (unsigned) i->leader);
get_process_comm(i->leader, &t);
if (t)
printf(" (%s)", t);
putchar('\n');
}
if (i->service) {
printf("\t Service: %s", i->service);
if (i->class)
printf("; class %s", i->class);
putchar('\n');
} else if (i->class)
printf("\t Class: %s\n", i->class);
if (i->root_directory)
printf("\t Root: %s\n", i->root_directory);
if (i->n_netif > 0) {
unsigned c;
fputs("\t Iface:", stdout);
for (c = 0; c < i->n_netif; c++) {
char name[IF_NAMESIZE+1] = "";
if (if_indextoname(i->netif[c], name)) {
fputc(' ', stdout);
fputs(name, stdout);
if (ifi < 0)
ifi = i->netif[c];
else
ifi = 0;
} else
printf(" %i", i->netif[c]);
}
fputc('\n', stdout);
}
print_addresses(bus, i->name, ifi,
"\t Address: ",
"\t ");
print_os_release(bus, i->name, "\t OS: ");
if (i->unit) {
printf("\t Unit: %s\n", i->unit);
show_unit_cgroup(bus, i->unit, i->leader);
}
}
static int map_netif(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
MachineStatusInfo *i = userdata;
size_t l;
const void *v;
int r;
assert_cc(sizeof(int32_t) == sizeof(int));
r = sd_bus_message_read_array(m, SD_BUS_TYPE_INT32, &v, &l);
if (r < 0)
return r;
if (r == 0)
return -EBADMSG;
i->n_netif = l / sizeof(int32_t);
i->netif = memdup(v, l);
if (!i->netif)
return -ENOMEM;
return 0;
}
static int show_machine_info(const char *verb, sd_bus *bus, const char *path, bool *new_line) {
static const struct bus_properties_map map[] = {
{ "Name", "s", NULL, offsetof(MachineStatusInfo, name) },
{ "Class", "s", NULL, offsetof(MachineStatusInfo, class) },
{ "Service", "s", NULL, offsetof(MachineStatusInfo, service) },
{ "Unit", "s", NULL, offsetof(MachineStatusInfo, unit) },
{ "RootDirectory", "s", NULL, offsetof(MachineStatusInfo, root_directory) },
{ "Leader", "u", NULL, offsetof(MachineStatusInfo, leader) },
{ "Timestamp", "t", NULL, offsetof(MachineStatusInfo, timestamp) },
{ "Id", "ay", bus_map_id128, offsetof(MachineStatusInfo, id) },
{ "NetworkInterfaces", "ai", map_netif, 0 },
{}
};
MachineStatusInfo info = {};
int r;
assert(verb);
assert(bus);
assert(path);
assert(new_line);
r = bus_map_all_properties(bus,
"org.freedesktop.machine1",
path,
map,
&info);
if (r < 0)
return log_error_errno(r, "Could not get properties: %m");
if (*new_line)
printf("\n");
*new_line = true;
print_machine_status_info(bus, &info);
free(info.name);
free(info.class);
free(info.service);
free(info.unit);
free(info.root_directory);
free(info.netif);
return r;
}
static int show_machine_properties(sd_bus *bus, const char *path, bool *new_line) {
int r;
assert(bus);
assert(path);
assert(new_line);
if (*new_line)
printf("\n");
*new_line = true;
r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_all);
if (r < 0)
log_error_errno(r, "Could not get properties: %m");
return r;
}
static int show_machine(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
bool properties, new_line = false;
sd_bus *bus = userdata;
int r = 0, i;
assert(bus);
properties = !strstr(argv[0], "status");
pager_open_if_enabled();
if (properties && argc <= 1) {
/* If no argument is specified, inspect the manager
* itself */
r = show_machine_properties(bus, "/org/freedesktop/machine1", &new_line);
if (r < 0)
return r;
}
for (i = 1; i < argc; i++) {
const char *path = NULL;
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"GetMachine",
&error,
&reply,
"s", argv[i]);
if (r < 0) {
log_error("Could not get path to machine: %s", bus_error_message(&error, -r));
return r;
}
r = sd_bus_message_read(reply, "o", &path);
if (r < 0)
return bus_log_parse_error(r);
if (properties)
r = show_machine_properties(bus, path, &new_line);
else
r = show_machine_info(argv[0], bus, path, &new_line);
}
return r;
}
typedef struct ImageStatusInfo {
char *name;
char *path;
char *type;
int read_only;
usec_t crtime;
usec_t mtime;
uint64_t size;
uint64_t limit;
uint64_t size_exclusive;
uint64_t limit_exclusive;
} ImageStatusInfo;
static void print_image_status_info(sd_bus *bus, ImageStatusInfo *i) {
char ts_relative[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
char ts_absolute[FORMAT_TIMESTAMP_MAX], *s2;
char bs[FORMAT_BYTES_MAX], *s3;
char bs_exclusive[FORMAT_BYTES_MAX], *s4;
assert(bus);
assert(i);
if (i->name) {
fputs(i->name, stdout);
putchar('\n');
}
if (i->path)
printf("\t Type: %s\n", i->type);
if (i->path)
printf("\t Path: %s\n", i->path);
printf("\t RO: %s%s%s\n",
i->read_only ? ansi_highlight_red() : "",
i->read_only ? "read-only" : "writable",
i->read_only ? ansi_highlight_off() : "");
s1 = format_timestamp_relative(ts_relative, sizeof(ts_relative), i->crtime);
s2 = format_timestamp(ts_absolute, sizeof(ts_absolute), i->crtime);
if (s1 && s2)
printf("\t Created: %s; %s\n", s2, s1);
else if (s2)
printf("\t Created: %s\n", s2);
s1 = format_timestamp_relative(ts_relative, sizeof(ts_relative), i->mtime);
s2 = format_timestamp(ts_absolute, sizeof(ts_absolute), i->mtime);
if (s1 && s2)
printf("\tModified: %s; %s\n", s2, s1);
else if (s2)
printf("\tModified: %s\n", s2);
s3 = format_bytes(bs, sizeof(bs), i->size);
s4 = i->size_exclusive != i->size ? format_bytes(bs_exclusive, sizeof(bs_exclusive), i->size_exclusive) : NULL;
if (s3 && s4)
printf("\t Size: %s (exclusive: %s)\n", s3, s4);
else if (s3)
printf("\t Size: %s\n", s3);
s3 = format_bytes(bs, sizeof(bs), i->limit);
s4 = i->limit_exclusive != i->limit ? format_bytes(bs_exclusive, sizeof(bs_exclusive), i->limit_exclusive) : NULL;
if (s3 && s4)
printf("\t Limit: %s (exclusive: %s)\n", s3, s4);
else if (s3)
printf("\t Limit: %s\n", s3);
}
static int show_image_info(const char *verb, sd_bus *bus, const char *path, bool *new_line) {
static const struct bus_properties_map map[] = {
{ "Name", "s", NULL, offsetof(ImageStatusInfo, name) },
{ "Path", "s", NULL, offsetof(ImageStatusInfo, path) },
{ "Type", "s", NULL, offsetof(ImageStatusInfo, type) },
{ "ReadOnly", "b", NULL, offsetof(ImageStatusInfo, read_only) },
{ "CreationTimestamp", "t", NULL, offsetof(ImageStatusInfo, crtime) },
{ "ModificationTimestamp", "t", NULL, offsetof(ImageStatusInfo, mtime) },
{ "Size", "t", NULL, offsetof(ImageStatusInfo, size) },
{ "Limit", "t", NULL, offsetof(ImageStatusInfo, limit) },
{ "SizeExclusive", "t", NULL, offsetof(ImageStatusInfo, size_exclusive) },
{ "LimitExclusive", "t", NULL, offsetof(ImageStatusInfo, limit_exclusive) },
{}
};
ImageStatusInfo info = {};
int r;
assert(verb);
assert(bus);
assert(path);
assert(new_line);
r = bus_map_all_properties(bus,
"org.freedesktop.machine1",
path,
map,
&info);
if (r < 0)
return log_error_errno(r, "Could not get properties: %m");
if (*new_line)
printf("\n");
*new_line = true;
print_image_status_info(bus, &info);
free(info.name);
free(info.path);
free(info.type);
return r;
}
static int show_image_properties(sd_bus *bus, const char *path, bool *new_line) {
int r;
assert(bus);
assert(path);
assert(new_line);
if (*new_line)
printf("\n");
*new_line = true;
r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_all);
if (r < 0)
log_error_errno(r, "Could not get properties: %m");
return r;
}
static int show_image(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
bool properties, new_line = false;
sd_bus *bus = userdata;
int r = 0, i;
assert(bus);
properties = !strstr(argv[0], "status");
pager_open_if_enabled();
if (properties && argc <= 1) {
/* If no argument is specified, inspect the manager
* itself */
r = show_image_properties(bus, "/org/freedesktop/machine1", &new_line);
if (r < 0)
return r;
}
for (i = 1; i < argc; i++) {
const char *path = NULL;
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"GetImage",
&error,
&reply,
"s", argv[i]);
if (r < 0) {
log_error("Could not get path to image: %s", bus_error_message(&error, -r));
return r;
}
r = sd_bus_message_read(reply, "o", &path);
if (r < 0)
return bus_log_parse_error(r);
if (properties)
r = show_image_properties(bus, path, &new_line);
else
r = show_image_info(argv[0], bus, path, &new_line);
}
return r;
}
static int kill_machine(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int i;
assert(bus);
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < argc; i++) {
int r;
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"KillMachine",
&error,
NULL,
"ssi", argv[i], arg_kill_who, arg_signal);
if (r < 0) {
log_error("Could not kill machine: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int reboot_machine(int argc, char *argv[], void *userdata) {
arg_kill_who = "leader";
arg_signal = SIGINT; /* sysvinit + systemd */
return kill_machine(argc, argv, userdata);
}
static int poweroff_machine(int argc, char *argv[], void *userdata) {
arg_kill_who = "leader";
arg_signal = SIGRTMIN+4; /* only systemd */
return kill_machine(argc, argv, userdata);
}
static int terminate_machine(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int i;
assert(bus);
for (i = 1; i < argc; i++) {
int r;
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"TerminateMachine",
&error,
NULL,
"s", argv[i]);
if (r < 0) {
log_error("Could not terminate machine: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int machine_get_leader(sd_bus *bus, const char *name, pid_t *ret) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *reply2 = NULL;
const char *object;
uint32_t leader;
int r;
assert(bus);
assert(name);
assert(ret);
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"GetMachine",
&error,
&reply,
"s", name);
if (r < 0) {
log_error("Could not get path to machine: %s", bus_error_message(&error, -r));
return r;
}
r = sd_bus_message_read(reply, "o", &object);
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_get_property(
bus,
"org.freedesktop.machine1",
object,
"org.freedesktop.machine1.Machine",
"Leader",
&error,
&reply2,
"u");
if (r < 0)
return log_error_errno(r, "Failed to retrieve PID of leader: %m");
r = sd_bus_message_read(reply2, "u", &leader);
if (r < 0)
return bus_log_parse_error(r);
*ret = leader;
return 0;
}
static int copy_files(int argc, char *argv[], void *userdata) {
char *dest, *host_path, *container_path, *host_dirname, *host_basename, *container_dirname, *container_basename, *t;
_cleanup_close_ int hostfd = -1;
sd_bus *bus = userdata;
pid_t child, leader;
bool copy_from;
siginfo_t si;
int r;
assert(bus);
copy_from = streq(argv[0], "copy-from");
dest = argv[3] ?: argv[2];
host_path = strdupa(copy_from ? dest : argv[2]);
container_path = strdupa(copy_from ? argv[2] : dest);
if (!path_is_absolute(container_path)) {
log_error("Container path not absolute.");
return -EINVAL;
}
t = strdup(host_path);
host_basename = basename(t);
host_dirname = dirname(host_path);
t = strdup(container_path);
container_basename = basename(t);
container_dirname = dirname(container_path);
r = machine_get_leader(bus, argv[1], &leader);
if (r < 0)
return r;
hostfd = open(host_dirname, O_CLOEXEC|O_RDONLY|O_NOCTTY|O_DIRECTORY);
if (r < 0)
return log_error_errno(errno, "Failed to open source directory: %m");
child = fork();
if (child < 0)
return log_error_errno(errno, "Failed to fork(): %m");
if (child == 0) {
int containerfd;
const char *q;
int mntfd;
q = procfs_file_alloca(leader, "ns/mnt");
mntfd = open(q, O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (mntfd < 0) {
log_error_errno(errno, "Failed to open mount namespace of leader: %m");
_exit(EXIT_FAILURE);
}
if (setns(mntfd, CLONE_NEWNS) < 0) {
log_error_errno(errno, "Failed to join namespace of leader: %m");
_exit(EXIT_FAILURE);
}
containerfd = open(container_dirname, O_CLOEXEC|O_RDONLY|O_NOCTTY|O_DIRECTORY);
if (containerfd < 0) {
log_error_errno(errno, "Failed top open destination directory: %m");
_exit(EXIT_FAILURE);
}
if (copy_from)
r = copy_tree_at(containerfd, container_basename, hostfd, host_basename, true);
else
r = copy_tree_at(hostfd, host_basename, containerfd, container_basename, true);
if (r < 0) {
log_error_errno(errno, "Failed to copy tree: %m");
_exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
}
r = wait_for_terminate(child, &si);
if (r < 0)
return log_error_errno(r, "Failed to wait for client: %m");
if (si.si_code != CLD_EXITED) {
log_error("Client died abnormally.");
return -EIO;
}
if (si.si_status != EXIT_SUCCESS)
return -EIO;
return 0;
}
static int bind_mount(int argc, char *argv[], void *userdata) {
char mount_slave[] = "/tmp/propagate.XXXXXX", *mount_tmp, *mount_outside, *p;
sd_bus *bus = userdata;
pid_t child, leader;
const char *dest;
siginfo_t si;
bool mount_slave_created = false, mount_slave_mounted = false,
mount_tmp_created = false, mount_tmp_mounted = false,
mount_outside_created = false, mount_outside_mounted = false;
int r;
assert(bus);
/* One day, when bind mounting /proc/self/fd/n works across
* namespace boundaries we should rework this logic to make
* use of it... */
dest = argv[3] ?: argv[2];
if (!path_is_absolute(dest)) {
log_error("Destination path not absolute.");
return -EINVAL;
}
p = strappenda("/run/systemd/nspawn/propagate/", argv[1], "/");
if (access(p, F_OK) < 0) {
log_error("Container does not allow propagation of mount points.");
return -ENOTSUP;
}
r = machine_get_leader(bus, argv[1], &leader);
if (r < 0)
return r;
/* Our goal is to install a new bind mount into the container,
possibly read-only. This is irritatingly complex
unfortunately, currently.
First, we start by creating a private playground in /tmp,
that we can mount MS_SLAVE. (Which is necessary, since
MS_MOUNT cannot be applied to mounts with MS_SHARED parent
mounts.) */
if (!mkdtemp(mount_slave))
return log_error_errno(errno, "Failed to create playground: %m");
mount_slave_created = true;
if (mount(mount_slave, mount_slave, NULL, MS_BIND, NULL) < 0) {
r = log_error_errno(errno, "Failed to make bind mount: %m");
goto finish;
}
mount_slave_mounted = true;
if (mount(NULL, mount_slave, NULL, MS_SLAVE, NULL) < 0) {
r = log_error_errno(errno, "Failed to remount slave: %m");
goto finish;
}
/* Second, we mount the source directory to a directory inside
of our MS_SLAVE playground. */
mount_tmp = strappenda(mount_slave, "/mount");
if (mkdir(mount_tmp, 0700) < 0) {
r = log_error_errno(errno, "Failed to create temporary mount: %m");
goto finish;
}
mount_tmp_created = true;
if (mount(argv[2], mount_tmp, NULL, MS_BIND, NULL) < 0) {
r = log_error_errno(errno, "Failed to overmount: %m");
goto finish;
}
mount_tmp_mounted = true;
/* Third, we remount the new bind mount read-only if requested. */
if (arg_read_only)
if (mount(NULL, mount_tmp, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY, NULL) < 0) {
r = log_error_errno(errno, "Failed to mark read-only: %m");
goto finish;
}
/* Fourth, we move the new bind mount into the propagation
* directory. This way it will appear there read-only
* right-away. */
mount_outside = strappenda("/run/systemd/nspawn/propagate/", argv[1], "/XXXXXX");
if (!mkdtemp(mount_outside)) {
r = log_error_errno(errno, "Cannot create propagation directory: %m");
goto finish;
}
mount_outside_created = true;
if (mount(mount_tmp, mount_outside, NULL, MS_MOVE, NULL) < 0) {
r = log_error_errno(errno, "Failed to move: %m");
goto finish;
}
mount_outside_mounted = true;
mount_tmp_mounted = false;
(void) rmdir(mount_tmp);
mount_tmp_created = false;
(void) umount(mount_slave);
mount_slave_mounted = false;
(void) rmdir(mount_slave);
mount_slave_created = false;
child = fork();
if (child < 0) {
r = log_error_errno(errno, "Failed to fork(): %m");
goto finish;
}
if (child == 0) {
const char *mount_inside;
int mntfd;
const char *q;
q = procfs_file_alloca(leader, "ns/mnt");
mntfd = open(q, O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (mntfd < 0) {
log_error_errno(errno, "Failed to open mount namespace of leader: %m");
_exit(EXIT_FAILURE);
}
if (setns(mntfd, CLONE_NEWNS) < 0) {
log_error_errno(errno, "Failed to join namespace of leader: %m");
_exit(EXIT_FAILURE);
}
if (arg_mkdir)
mkdir_p(dest, 0755);
/* Fifth, move the mount to the right place inside */
mount_inside = strappenda("/run/systemd/nspawn/incoming/", basename(mount_outside));
if (mount(mount_inside, dest, NULL, MS_MOVE, NULL) < 0) {
log_error_errno(errno, "Failed to mount: %m");
_exit(EXIT_FAILURE);
}
_exit(EXIT_SUCCESS);
}
r = wait_for_terminate(child, &si);
if (r < 0) {
log_error_errno(r, "Failed to wait for client: %m");
goto finish;
}
if (si.si_code != CLD_EXITED) {
log_error("Client died abnormally.");
r = -EIO;
goto finish;
}
if (si.si_status != EXIT_SUCCESS) {
r = -EIO;
goto finish;
}
r = 0;
finish:
if (mount_outside_mounted)
umount(mount_outside);
if (mount_outside_created)
rmdir(mount_outside);
if (mount_tmp_mounted)
umount(mount_tmp);
if (mount_tmp_created)
umount(mount_tmp);
if (mount_slave_mounted)
umount(mount_slave);
if (mount_slave_created)
umount(mount_slave);
return r;
}
static int login_machine(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
_cleanup_(pty_forward_freep) PTYForward *forward = NULL;
_cleanup_event_unref_ sd_event *event = NULL;
int master = -1, r, ret = 0;
sd_bus *bus = userdata;
const char *pty;
sigset_t mask;
char last_char = 0;
assert(bus);
if (arg_transport != BUS_TRANSPORT_LOCAL &&
arg_transport != BUS_TRANSPORT_MACHINE) {
log_error("Login only supported on local machines.");
return -ENOTSUP;
}
r = sd_event_default(&event);
if (r < 0)
return log_error_errno(r, "Failed to get event loop: %m");
r = sd_bus_attach_event(bus, event, 0);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
r = sd_bus_message_new_method_call(bus,
&m,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"OpenMachineLogin");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_set_allow_interactive_authorization(m, true);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(m, "s", argv[1]);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
if (r < 0) {
log_error("Failed to get machine PTY: %s", bus_error_message(&error, -r));
return r;
}
r = sd_bus_message_read(reply, "hs", &master, &pty);
if (r < 0)
return bus_log_parse_error(r);
assert_se(sigemptyset(&mask) == 0);
sigset_add_many(&mask, SIGWINCH, SIGTERM, SIGINT, -1);
assert_se(sigprocmask(SIG_BLOCK, &mask, NULL) == 0);
log_info("Connected to container %s. Press ^] three times within 1s to exit session.", argv[1]);
sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
r = pty_forward_new(event, master, true, &forward);
if (r < 0)
return log_error_errno(r, "Failed to create PTY forwarder: %m");
r = sd_event_loop(event);
if (r < 0)
return log_error_errno(r, "Failed to run event loop: %m");
pty_forward_last_char(forward, &last_char);
forward = pty_forward_free(forward);
if (last_char != '\n')
fputc('\n', stdout);
log_info("Connection to container %s terminated.", argv[1]);
sd_event_get_exit_code(event, &ret);
return ret;
}
static int remove_image(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, i;
assert(bus);
for (i = 1; i < argc; i++) {
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"RemoveImage",
&error,
NULL,
"s", argv[i]);
if (r < 0) {
log_error("Could not remove image: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int rename_image(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"RenameImage",
&error,
NULL,
"ss", argv[1], argv[2]);
if (r < 0) {
log_error("Could not rename image: %s", bus_error_message(&error, -r));
return r;
}
return 0;
}
static int clone_image(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"CloneImage",
&error,
NULL,
"ssb", argv[1], argv[2], arg_read_only);
if (r < 0) {
log_error("Could not clone image: %s", bus_error_message(&error, -r));
return r;
}
return 0;
}
static int read_only_image(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int b = true, r;
if (argc > 2) {
b = parse_boolean(argv[2]);
if (b < 0) {
log_error("Failed to parse boolean argument: %s", argv[2]);
return -EINVAL;
}
}
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"MarkImageReadOnly",
&error,
NULL,
"sb", argv[1], b);
if (r < 0) {
log_error("Could not mark image read-only: %s", bus_error_message(&error, -r));
return r;
}
return 0;
}
static int start_machine(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
sd_bus *bus = userdata;
int r, i;
assert(bus);
r = bus_wait_for_jobs_new(bus, &w);
if (r < 0)
return log_oom();
for (i = 1; i < argc; i++) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
_cleanup_free_ char *e = NULL, *unit = NULL;
const char *object;
if (!machine_name_is_valid(argv[i])) {
log_error("Invalid machine name %s.", argv[i]);
return -EINVAL;
}
e = unit_name_escape(argv[i]);
if (!e)
return log_oom();
unit = unit_name_build("systemd-nspawn", e, ".service");
if (!unit)
return log_oom();
r = sd_bus_message_new_method_call(
bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartUnit");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_set_allow_interactive_authorization(m, true);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append(m, "ss", unit, "fail");
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, &reply);
if (r < 0) {
log_error("Failed to start unit: %s", bus_error_message(&error, -r));
return r;
}
r = sd_bus_message_read(reply, "o", &object);
if (r < 0)
return bus_log_parse_error(r);
r = bus_wait_for_jobs_add(w, object);
if (r < 0)
return log_oom();
}
r = bus_wait_for_jobs(w, false);
if (r < 0)
return r;
return 0;
}
static int help(int argc, char *argv[], void *userdata) {
printf("%s [OPTIONS...] {COMMAND} ...\n\n"
"Send control commands to or query the virtual machine and container\n"
"registration manager.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" --no-legend Do not show the headers and footers\n"
" -H --host=[USER@]HOST Operate on remote host\n"
" -M --machine=CONTAINER Operate on local container\n"
" -p --property=NAME Show only properties by this name\n"
" -a --all Show all properties, including empty ones\n"
" -l --full Do not ellipsize output\n"
" --kill-who=WHO Who to send signal to\n"
" -s --signal=SIGNAL Which signal to send\n"
" --read-only Create read-only bind mount\n"
" --mkdir Create directory before bind mounting, if missing\n\n"
"Machine Commands:\n"
" list List running VMs and containers\n"
" status NAME... Show VM/container details\n"
" show NAME... Show properties of one or more VMs/containers\n"
" login NAME Get a login prompt on a container\n"
" start NAME... Start container as a service\n"
" poweroff NAME... Power off one or more containers\n"
" reboot NAME... Reboot one or more containers\n"
" terminate NAME... Terminate one or more VMs/containers\n"
" kill NAME... Send signal to processes of a VM/container\n"
" copy-to NAME PATH [PATH] Copy files from the host to a container\n"
" copy-from NAME PATH [PATH] Copy files from a container to the host\n"
" bind NAME PATH [PATH] Bind mount a path from the host into a container\n\n"
"Image Commands:\n"
" list-images Show available images\n"
" image-status NAME... Show image details\n"
" show-image NAME... Show properties of image\n"
" clone NAME NAME Clone an image\n"
" rename NAME NAME Rename an image\n"
" read-only NAME [BOOL] Mark or unmark image read-only\n"
" remove NAME... Remove an image\n",
program_invocation_short_name);
return 0;
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_NO_PAGER,
ARG_NO_LEGEND,
ARG_KILL_WHO,
ARG_READ_ONLY,
ARG_MKDIR,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "property", required_argument, NULL, 'p' },
{ "all", no_argument, NULL, 'a' },
{ "full", no_argument, NULL, 'l' },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
{ "kill-who", required_argument, NULL, ARG_KILL_WHO },
{ "signal", required_argument, NULL, 's' },
{ "host", required_argument, NULL, 'H' },
{ "machine", required_argument, NULL, 'M' },
{ "read-only", no_argument, NULL, ARG_READ_ONLY },
{ "mkdir", no_argument, NULL, ARG_MKDIR },
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hp:als:H:M:", options, NULL)) >= 0)
switch (c) {
case 'h':
return help(0, NULL, NULL);
case ARG_VERSION:
puts(PACKAGE_STRING);
puts(SYSTEMD_FEATURES);
return 0;
case 'p':
r = strv_extend(&arg_property, optarg);
if (r < 0)
return log_oom();
/* If the user asked for a particular
* property, show it to him, even if it is
* empty. */
arg_all = true;
break;
case 'a':
arg_all = true;
break;
case 'l':
arg_full = true;
break;
case ARG_NO_PAGER:
arg_no_pager = true;
break;
case ARG_NO_LEGEND:
arg_legend = false;
break;
case ARG_KILL_WHO:
arg_kill_who = optarg;
break;
case 's':
arg_signal = signal_from_string_try_harder(optarg);
if (arg_signal < 0) {
log_error("Failed to parse signal string %s.", optarg);
return -EINVAL;
}
break;
case 'H':
arg_transport = BUS_TRANSPORT_REMOTE;
arg_host = optarg;
break;
case 'M':
arg_transport = BUS_TRANSPORT_MACHINE;
arg_host = optarg;
break;
case ARG_READ_ONLY:
arg_read_only = true;
break;
case ARG_MKDIR:
arg_mkdir = true;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
return 1;
}
static int machinectl_main(int argc, char *argv[], sd_bus *bus) {
static const Verb verbs[] = {
{ "help", VERB_ANY, VERB_ANY, 0, help },
{ "list", VERB_ANY, 1, VERB_DEFAULT, list_machines },
{ "list-images", VERB_ANY, 1, 0, list_images },
{ "status", 2, VERB_ANY, 0, show_machine },
{ "image-status",2, VERB_ANY, 0, show_image },
{ "show", VERB_ANY, VERB_ANY, 0, show_machine },
{ "show-image", VERB_ANY, VERB_ANY, 0, show_image },
{ "terminate", 2, VERB_ANY, 0, terminate_machine },
{ "reboot", 2, VERB_ANY, 0, reboot_machine },
{ "poweroff", 2, VERB_ANY, 0, poweroff_machine },
{ "kill", 2, VERB_ANY, 0, kill_machine },
{ "login", 2, 2, 0, login_machine },
{ "bind", 3, 4, 0, bind_mount },
{ "copy-to", 3, 4, 0, copy_files },
{ "copy-from", 3, 4, 0, copy_files },
{ "remove", 2, VERB_ANY, 0, remove_image },
{ "rename", 3, 3, 0, rename_image },
{ "clone", 3, 3, 0, clone_image },
{ "read-only", 2, 3, 0, read_only_image },
{ "start", 2, VERB_ANY, 0, start_machine },
{}
};
return dispatch_verb(argc, argv, verbs, bus);
}
int main(int argc, char*argv[]) {
_cleanup_bus_close_unref_ sd_bus *bus = NULL;
int r;
setlocale(LC_ALL, "");
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
r = bus_open_transport(arg_transport, arg_host, false, &bus);
if (r < 0) {
log_error_errno(r, "Failed to create bus connection: %m");
goto finish;
}
r = machinectl_main(argc, argv, bus);
finish:
pager_close();
strv_free(arg_property);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}