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-rw-r--r--man/machinectl.xml11
-rw-r--r--src/machine/machinectl.c57
2 files changed, 45 insertions, 23 deletions
diff --git a/man/machinectl.xml b/man/machinectl.xml
index 7056fd4204..eaa247714b 100644
--- a/man/machinectl.xml
+++ b/man/machinectl.xml
@@ -186,12 +186,11 @@
<varlistentry>
<term><option>--uid=</option></term>
- <listitem><para>When used with the <command>shell</command>
- command, chooses the user ID to open the interactive shell
- session as. If this switch is not specified, defaults to
- <literal>root</literal>. Note that this switch is not
- supported for the <command>login</command> command (see
- below).</para></listitem>
+ <listitem><para>When used with the <command>shell</command> command, chooses the user ID to
+ open the interactive shell session as. If the argument to the <command>shell</command>
+ command also specifies an user name, this option is ignored. If the name is not specified
+ in either way, <literal>root</literal> will be used by default. Note that this switch is
+ not supported for the <command>login</command> command (see below).</para></listitem>
</varlistentry>
<varlistentry>
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index d2ca2ef342..e9de31e184 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -1368,6 +1368,41 @@ static int process_forward(sd_event *event, PTYForward **forward, int master, PT
return ret;
}
+static int parse_machine_uid(const char *spec, const char **machine, char **uid) {
+ /*
+ * Whatever is specified in the spec takes priority over global arguments.
+ */
+ char *_uid = NULL;
+ const char *_machine = NULL;
+
+ if (spec) {
+ const char *at;
+
+ at = strchr(spec, '@');
+ if (at) {
+ if (at == spec)
+ /* Do the same as ssh and refuse "@host". */
+ return -EINVAL;
+
+ _machine = at + 1;
+ _uid = strndup(spec, at - spec);
+ if (!_uid)
+ return -ENOMEM;
+ } else
+ _machine = spec;
+ };
+
+ if (arg_uid && !_uid) {
+ _uid = strdup(arg_uid);
+ if (!_uid)
+ return -ENOMEM;
+ }
+
+ *uid = _uid;
+ *machine = isempty(_machine) ? ".host" : _machine;
+ return 0;
+}
+
static int login_machine(int argc, char *argv[], void *userdata) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
@@ -1443,7 +1478,8 @@ static int shell_machine(int argc, char *argv[], void *userdata) {
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
int master = -1, r;
sd_bus *bus = userdata;
- const char *pty, *match, *machine, *path, *uid = NULL;
+ const char *pty, *match, *machine, *path;
+ _cleanup_free_ char *uid = NULL;
assert(bus);
@@ -1474,22 +1510,9 @@ static int shell_machine(int argc, char *argv[], void *userdata) {
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
- machine = argc < 2 || isempty(argv[1]) ? NULL : argv[1];
-
- if (arg_uid)
- uid = arg_uid;
- else if (machine) {
- const char *at;
-
- at = strchr(machine, '@');
- if (at) {
- uid = strndupa(machine, at - machine);
- machine = at + 1;
- }
- }
-
- if (isempty(machine))
- machine = ".host";
+ r = parse_machine_uid(argc >= 2 ? argv[1] : NULL, &machine, &uid);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse machine specification: %m");
match = strjoina("type='signal',"
"sender='org.freedesktop.machine1',"