1 files changed, 48 insertions, 1 deletions

diff --git a/arch/um/os-Linux/tt.c b/arch/um/os-Linux/tt.c
index cb2648b79d0f..919d19f11537 100644
--- a/arch/um/os-Linux/tt.c
+++ b/arch/um/os-Linux/tt.c
@@ -27,7 +27,6 @@
 #include "sysdep/sigcontext.h"
 #include "irq_user.h"
 #include "ptrace_user.h"
-#include "time_user.h"
 #include "init.h"
 #include "os.h"
 #include "uml-config.h"
@@ -63,6 +62,54 @@ void kill_child_dead(int pid)
         } while(1);
 }
 
+void stop(void)
+{
+        while(1) sleep(1000000);
+}
+
+int wait_for_stop(int pid, int sig, int cont_type, void *relay)
+{
+        sigset_t *relay_signals = relay;
+        int status, ret;
+
+        while(1){
+                CATCH_EINTR(ret = waitpid(pid, &status, WUNTRACED));
+                if((ret < 0) ||
+                   !WIFSTOPPED(status) || (WSTOPSIG(status) != sig)){
+                        if(ret < 0){
+                                printk("wait failed, errno = %d\n",
+                                       errno);
+                        }
+                        else if(WIFEXITED(status))
+                                printk("process %d exited with status %d\n",
+                                       pid, WEXITSTATUS(status));
+                        else if(WIFSIGNALED(status))
+                                printk("process %d exited with signal %d\n",
+                                       pid, WTERMSIG(status));
+                        else if((WSTOPSIG(status) == SIGVTALRM) ||
+                                (WSTOPSIG(status) == SIGALRM) ||
+                                (WSTOPSIG(status) == SIGIO) ||
+                                (WSTOPSIG(status) == SIGPROF) ||
+                                (WSTOPSIG(status) == SIGCHLD) ||
+                                (WSTOPSIG(status) == SIGWINCH) ||
+                                (WSTOPSIG(status) == SIGINT)){
+                                ptrace(cont_type, pid, 0, WSTOPSIG(status));
+                                continue;
+                        }
+                        else if((relay_signals != NULL) &&
+                                sigismember(relay_signals, WSTOPSIG(status))){
+                                ptrace(cont_type, pid, 0, WSTOPSIG(status));
+                                continue;
+                        }
+                        else printk("process %d stopped with signal %d\n",
+                                    pid, WSTOPSIG(status));
+                        panic("wait_for_stop failed to wait for %d to stop "
+                              "with %d\n", pid, sig);
+                }
+                return(status);
+        }
+}
+
 /*
  *-------------------------
  * only for tt mode (will be deleted in future...)