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authorLennart Poettering <lennart@poettering.net>2012-05-11 17:35:46 +0200
committerLennart Poettering <lennart@poettering.net>2012-05-14 22:41:30 +0200
commit957eb8cab28dc83aa4b800d033031e53cd0a9e00 (patch)
treefbf5b42eabbb3e7416ac48232aa50acd027c5f27 /src
parent50913bc0c8ced894ceabc7e893c0fdf73af9a261 (diff)
systemctl: add switch-root verb
Diffstat (limited to 'src')
-rw-r--r--src/systemctl/systemctl.c63
1 files changed, 62 insertions, 1 deletions
diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c
index 4708a35835..0034c55384 100644
--- a/src/systemctl/systemctl.c
+++ b/src/systemctl/systemctl.c
@@ -3580,6 +3580,65 @@ finish:
return r;
}
+static int switch_root(DBusConnection *bus, char **args) {
+ DBusMessage *m = NULL, *reply = NULL;
+ unsigned l;
+ const char *root, *init;
+ DBusError error;
+ int r;
+
+ dbus_error_init(&error);
+
+ l = strv_length(args);
+ if (l < 2 || l > 3) {
+ log_error("Wrong number of arguments.");
+ return -EINVAL;
+ }
+
+ root = args[1];
+ init = l >= 3 ? args[2] : "";
+
+ m = dbus_message_new_method_call(
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "SwitchRoot");
+ if (!m) {
+ log_error("Could not allocate message.");
+ return -ENOMEM;
+ }
+
+ if (!dbus_message_append_args(
+ m,
+ DBUS_TYPE_STRING, &root,
+ DBUS_TYPE_STRING, &init,
+ DBUS_TYPE_INVALID)) {
+ log_error("Could not append arguments to message.");
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
+ if (!reply) {
+ log_error("Failed to issue method call: %s", bus_error_message(&error));
+ r = -EIO;
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ if (m)
+ dbus_message_unref(m);
+
+ if (reply)
+ dbus_message_unref(reply);
+
+ dbus_error_free(&error);
+
+ return r;
+}
+
static int set_environment(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
@@ -4220,6 +4279,7 @@ static int systemctl_help(void) {
" reboot Shut down and reboot the system\n"
" kexec Shut down and reboot the system with kexec\n"
" exit Request user instance exit\n"
+ " switch-root [ROOT] [INIT] Change to a different root file system\n"
" suspend Suspend the system\n"
" hibernate Hibernate the system\n",
program_invocation_short_name);
@@ -5169,7 +5229,8 @@ static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError
{ "preset", MORE, 2, enable_unit },
{ "mask", MORE, 2, enable_unit },
{ "unmask", MORE, 2, enable_unit },
- { "link", MORE, 2, enable_unit }
+ { "link", MORE, 2, enable_unit },
+ { "switch-root", MORE, 2, switch_root },
};
int left;