fixed SEM_UI post bug

2 files changed, 15 insertions, 9 deletions

diff --git a/src/main.c b/src/main.c
index f2a435d..916bf4d 100644
--- a/src/main.c
+++ b/src/main.c
@@ -129,7 +129,6 @@ main(int argc, char **argv)
     goto error;
   }
 
-  ui_ipc_sempost(SEM_UI);
   if ((child = fork()) == 0) {
     /* child */
     logs("%s\n", "child");
@@ -158,14 +157,19 @@ main(int argc, char **argv)
         }
       } else if ( ui_ipc_msgcount(MQ_PW) > 0 ) {
         ui_ipc_msgrecv(MQ_PW, pbuf);
+        logs("%s", "password, ");
         ui_ipc_msgsend(MQ_IF, MSG(MSG_BUSY));
         if (run_cryptcreate(pbuf, GETOPT(CRYPT_CMD).str) != 0) {
+          logs("%s", "cryptcreate error, ");
           ui_ipc_msgsend(MQ_IF, MSG(MSG_CRYPTCMD_ERR));
         } else {
+          logs("%s", "cryptcreate success, trywait SEM_UI, ");
           ui_ipc_semtrywait(SEM_UI);
         }
+        logs("%s", "wait SEM_IN, ");
         ui_ipc_semwait(SEM_IN);
       }
+      logs("%s", "wait SEM_BS, ");
       ui_ipc_semwait(SEM_BS);
       usleep(100000);
       waitpid(child, &c_status, WNOHANG);
@@ -173,6 +177,7 @@ main(int argc, char **argv)
         logs("%s\n", "child exited");
         break;
       }
+      logs("loop end (SEM_BS=%d, SEM_IN=%d, SEM_UI=%d).\n", ui_ipc_getvalue(SEM_BS), ui_ipc_getvalue(SEM_IN), ui_ipc_getvalue(SEM_UI));
     }
     logs("%s\n", "waiting for child");
     wait(&c_status);
diff --git a/src/ui_elements.c b/src/ui_elements.c
index 535bc0c..f072d45 100644
--- a/src/ui_elements.c
+++ b/src/ui_elements.c
@@ -87,15 +87,16 @@ passwd_input_cb(WINDOW *wnd, void *data, int key)
       ui_thrd_force_update();
 
       sleep(2);
-      ui_ipc_msgrecv(MQ_IF, ipc_buf);
-
-      ui_thrd_suspend();
-      set_txtwindow_color(infownd, COLOR_PAIR(4), COLOR_PAIR(4) | A_BOLD);
-      set_txtwindow_title(infownd, "ERROR");
-      set_txtwindow_text(infownd, ipc_buf);
-      ui_thrd_resume();
 
-      while (wgetch(stdscr) != '\n') { };
+      if (ui_ipc_msgcount(MQ_IF) > 0) {
+        ui_ipc_msgrecv(MQ_IF, ipc_buf);
+        ui_thrd_suspend();
+        set_txtwindow_color(infownd, COLOR_PAIR(4), COLOR_PAIR(4) | A_BOLD);
+        set_txtwindow_title(infownd, "ERROR");
+        set_txtwindow_text(infownd, ipc_buf);
+        ui_thrd_resume();
+        while (wgetch(stdscr) != '\n') { };
+      }
 
       ui_thrd_suspend();
       set_txtwindow_active(infownd, false);