process: separate stderr from stdout

- Add the option of redirecting stderr to a file. With the old
behaviour, stderr would follow stdout if stdout was to a file, but
stderr went to the host stderr if stdout went to the host stdout.  The
new default maintains stdout and stderr going to the host.  Now the
two can specify different files, but they will share a file descriptor
if the name of the files is the same.
- Add --output and --errout options to se.py to go with --input.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/sim/Process.py b/src/sim/Process.py
index 37a27bf3b..81108dd70 100644
--- a/src/sim/Process.py
+++ b/src/sim/Process.py
@@ -34,7 +34,8 @@ class Process(SimObject):
     type = 'Process'
     abstract = True
     input = Param.String('cin', "filename for stdin")
-    output = Param.String('cout', 'filename for stdout/stderr')
+    output = Param.String('cout', 'filename for stdout')
+    errout = Param.String('cerr', 'filename for stderr')
     system = Param.System(Parent.any, "system process will run on")
     max_stack_size = Param.MemorySize('64MB', 'maximum size of the stack')