Added code to provide a preliminary single user mode.

[citadel.git] / citadel / sysdep.c

diff --git a/citadel/sysdep.c b/citadel/sysdep.c
index c09fd2a06292edca76dae0ebbad3997440b76818..2114fb0e1a1f2150be3c8267626d659d92991c85 100644 (file)
--- a/citadel/sysdep.c
+++ b/citadel/sysdep.c
@@ -99,6 +99,52 @@ int syslog_facility = LOG_DAEMON;
 int enable_syslog = 0;
 
 
+/* Flag for single user mode */
+static int want_single_user = 0;
+
+/* Try to go single user */
+
+int CtdlTrySingleUser(void)
+{
+       int can_do = 0;
+       
+       begin_critical_section(S_SINGLE_USER);
+       if (want_single_user)
+               can_do = 0;
+       else
+       {
+               can_do = 1;
+               want_single_user = 1;
+       }
+       end_critical_section(S_SINGLE_USER);
+       return can_do;
+}
+
+void CtdlEndSingleUser(void)
+{
+       begin_critical_section(S_SINGLE_USER);
+       want_single_user = 0;
+       end_critical_section(S_SINGLE_USER);
+}
+
+
+int CtdlWantSingleUser(void)
+{
+       return want_single_user;
+}
+
+int CtdlIsSingleUser(void)
+{
+       if (want_single_user)
+       {
+               /* check for only one context here */
+               if (num_sessions == 1)
+                       return TRUE;
+       }
+       return FALSE;
+}
+
+
 /*
  * CtdlLogPrintf()  ...   Write logging information
  */