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machinectl: add new "machinectl reboot" call

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This commit is contained in:
Lennart Poettering 2014-02-12 02:07:57 +01:00
parent a87105a386
commit 923d8fd381
2 changed files with 79 additions and 2 deletions
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14
man/machinectl.xml
View File

@ -265,7 +265,19 @@
</varlistentry>
<varlistentry>
<term><command>login</command> <replaceable>ID</replaceable>...</term>
<term><command>reboot</command> <replaceable>ID</replaceable>...</term>
<listitem><para>Reboot one or more
containers. This will trigger a reboot
by sending SIGINT to the container's
init process, which is roughly
equivalent to pressing Ctrl+Alt+Del on
a non-containerized
system.</para></listitem>
</varlistentry>
<varlistentry>
<term><command>login</command> <replaceable>ID</replaceable></term>
<listitem><para>Open a terminal login
session to a container. This will

67
src/machine/machinectl.c
View File

@ -395,6 +395,69 @@ static int terminate_machine(sd_bus *bus, char **args, unsigned n) {
return 0;
}
static int reboot_machine(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
int r;
assert(args);
if (arg_transport != BUS_TRANSPORT_LOCAL) {
log_error("Reboot only supported on local machines.");
return -ENOTSUP;
}
for (i = 1; i < n; i++) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *reply2 = NULL;
const char *path;
uint32_t leader;
r = sd_bus_call_method(
bus,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"GetMachine",
&error,
&reply,
"s", args[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);
r = sd_bus_get_property(
bus,
"org.freedesktop.machine1",
path,
"org.freedesktop.machine1.Machine",
"Leader",
&error,
&reply2,
"u");
if (r < 0) {
log_error("Failed to retrieve PID of leader: %s", strerror(-r));
return r;
}
r = sd_bus_message_read(reply2, "u", &leader);
if (r < 0)
return bus_log_parse_error(r);
if (kill(leader, SIGINT) < 0) {
log_error("Failed to kill init process " PID_FMT ": %m", (pid_t) leader);
return -errno;
}
}
return 0;
}
static int openpt_in_namespace(pid_t pid, int flags) {
_cleanup_close_pipe_ int pair[2] = { -1, -1 };
_cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1;
@ -497,7 +560,7 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) {
assert(args);
if (arg_transport != BUS_TRANSPORT_LOCAL) {
log_error("Login only support on local machines.");
log_error("Login only supported on local machines.");
return -ENOTSUP;
}
@ -624,6 +687,7 @@ static int help(void) {
" show NAME... Show properties of one or more VMs/containers\n"
" terminate NAME... Terminate one or more VMs/containers\n"
" kill NAME... Send signal to processes of a VM/container\n"
" reboot NAME... Reboot one or more containers\n"
" login NAME Get a login prompt on a container\n",
program_invocation_short_name);
@ -747,6 +811,7 @@ static int machinectl_main(sd_bus *bus, int argc, char *argv[]) {
{ "status", MORE, 2, show },
{ "show", MORE, 1, show },
{ "terminate", MORE, 2, terminate_machine },
{ "reboot", MORE, 2, reboot_machine },
{ "kill", MORE, 2, kill_machine },
{ "login", MORE, 2, login_machine },
};