return cg_pid_get_slice(ucred.pid, slice);
}
+static int file_of_uid(uid_t uid, char **p) {
+ assert(p);
+
+ if (asprintf(p, "/run/systemd/users/" UID_FMT, uid) < 0)
+ return -ENOMEM;
+
+ return 0;
+}
+
_public_ int sd_uid_get_state(uid_t uid, char**state) {
_cleanup_free_ char *p = NULL;
char *s = NULL;
assert_return(state, -EINVAL);
- if (asprintf(&p, "/run/systemd/users/"UID_FMT, uid) < 0)
- return -ENOMEM;
+ r = file_of_uid(uid, &p);
+ if (r < 0)
+ return r;
r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
if (r == -ENOENT) {
return 0;
}
+_public_ int sd_uid_get_display(uid_t uid, char **session) {
+ _cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
+
+ assert_return(session, -EINVAL);
+
+ r = file_of_uid(uid, &p);
+ if (r < 0)
+ return r;
+
+ r = parse_env_file(p, NEWLINE, "DISPLAY", &s, NULL);
+ if (r < 0)
+ return r;
+
+ if (isempty(s))
+ return -ENOENT;
+
+ *session = s;
+ s = NULL;
+
+ return 0;
+}
+
_public_ int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat) {
char *w, *state;
_cleanup_free_ char *t = NULL, *s = NULL, *p = NULL;
char **a;
int r;
- if (asprintf(&p, "/run/systemd/users/"UID_FMT, uid) < 0)
- return -ENOMEM;
+ r = file_of_uid(uid, &p);
+ if (r < 0)
+ return r;
r = parse_env_file(p, NEWLINE,
variable, &s,
return r;
r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
-
if (r < 0)
return r;
else if (!s)
return r;
r = parse_env_file(p, NEWLINE, field, &s, NULL);
-
if (r < 0)
return r;
int sd_peer_get_slice(int fd, char **slice);
/* Get state from UID. Possible states: offline, lingering, online, active, closing */
-int sd_uid_get_state(uid_t uid, char**state);
+int sd_uid_get_state(uid_t uid, char **state);
+
+/* Return primary session of user, if there is any */
+int sd_uid_get_display(uid_t uid, char **session);
/* Return 1 if UID has session on seat. If require_active is true, this will
* look for active sessions only. */