1 files changed, 57 insertions, 0 deletions

diff --git a/arch/um/kernel/tt/exec_user.c b/arch/um/kernel/tt/exec_user.c
new file mode 100644
index 000000000000..a92c02ff2ce3
--- /dev/null
+++ b/arch/um/kernel/tt/exec_user.c
@@ -0,0 +1,57 @@
+/* 
+ * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sched.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include "user_util.h"
+#include "kern_util.h"
+#include "user.h"
+#include "ptrace_user.h"
+#include "os.h"
+
+void do_exec(int old_pid, int new_pid)
+{
+        unsigned long regs[FRAME_SIZE];
+        int err;
+
+        if((ptrace(PTRACE_ATTACH, new_pid, 0, 0) < 0) ||
+           (ptrace(PTRACE_CONT, new_pid, 0, 0) < 0))
+                tracer_panic("do_exec failed to attach proc - errno = %d",
+                             errno);
+
+        CATCH_EINTR(err = waitpid(new_pid, 0, WUNTRACED));
+        if (err < 0)
+                tracer_panic("do_exec failed to attach proc in waitpid - errno = %d",
+                             errno);
+
+        if(ptrace_getregs(old_pid, regs) < 0)
+                tracer_panic("do_exec failed to get registers - errno = %d",
+                             errno);
+
+        os_kill_ptraced_process(old_pid, 0);
+
+        if (ptrace(PTRACE_OLDSETOPTIONS, new_pid, 0, (void *)PTRACE_O_TRACESYSGOOD) < 0)
+                tracer_panic("do_exec: PTRACE_SETOPTIONS failed, errno = %d", errno);
+
+        if(ptrace_setregs(new_pid, regs) < 0)
+                tracer_panic("do_exec failed to start new proc - errno = %d",
+                             errno);
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */