Index: gdb/ChangeLog

+2005-07-06  Bob Rossi  <bob@brasko.net>
+
+	* fork-child.c (fork-inferior): Use accessor function for
+	inferior_io_terminal.
+	* infcmd.c (inferior_io_terminal): Make static.
+	(set_inferior_io_terminal): New function.
+	(get_inferior_io_terminal): Ditto.
+	(tty_command): Use accessor function.
+	(_initialize_infcmd): Add inferior_tty setshow variable.
+	(_initialize_infcmd): Remove tty command.
+	(_initialize_infcmd): Add a tty command that is an alias.
+	* inferior.h (set_inferior_io_terminal): New prototype.
+	(get_inferior_io_terminal): Ditto.
+	(new_tty_prefork): Add const qualifier to parameter.
+	* inflow.c (inferior_thisrun_terminal): Add const qualifier.
+	(new_tty_prefork): Add const qualifier to parameter.
+	* nto-procfs (procfs_create_inferior): Use accessor function.
+	(procfs_create_inferior): Add const qualifier to locals.
+	* win32-nat.c (child_create_inferior): Ditto.
+	* mi/mi-cmd-env.c (mi_cmd_inferior_tty_set): New function.
+	(mi_cmd_inferior_tty_set): Ditto.
+	* mi/mi-cmds.c (mi_cmds): Add inferior-tty-set and inferior-tty-show
+	* mi/mi-cmds.h (mi_cmd_inferior_tty_set): Add prototype.
+	(mi_cmd_inferior_tty_show): Ditto.

Index: gdb/doc/ChangeLog
+2005-07-06  Bob Rossi  <bob@brasko.net>
+
+	* gdb.texinfo (GDB/MI Miscellaneous Commands): Add -inferior-tty-set
+	and -inferior-tty-show.
+	(Input/Output): Document "set/show inferior-tty" and tty alias.

Index: gdb/testsuite/ChangeLog
+2005-07-06  Bob Rossi  <bob@brasko.net>
+
+	* gdb.mi/mi-basics.exp (test_setshow_inferior_tty): Test MI tty
+	command.
+	(Copyright): Update copyright.

14 files changed, 204 insertions, 15 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 85ba233991b..30352b501e2 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,28 @@
+2005-07-06  Bob Rossi  <bob@brasko.net>
+
+	* fork-child.c (fork-inferior): Use accessor function for
+	inferior_io_terminal.
+	* infcmd.c (inferior_io_terminal): Make static.
+	(set_inferior_io_terminal): New function.
+	(get_inferior_io_terminal): Ditto.
+	(tty_command): Use accessor function.
+	(_initialize_infcmd): Add inferior_tty setshow variable.
+	(_initialize_infcmd): Remove tty command.
+	(_initialize_infcmd): Add a tty command that is an alias.
+	* inferior.h (set_inferior_io_terminal): New prototype.
+	(get_inferior_io_terminal): Ditto.
+	(new_tty_prefork): Add const qualifier to parameter.
+	* inflow.c (inferior_thisrun_terminal): Add const qualifier.
+	(new_tty_prefork): Add const qualifier to parameter.
+	* nto-procfs (procfs_create_inferior): Use accessor function.
+	(procfs_create_inferior): Add const qualifier to locals.
+	* win32-nat.c (child_create_inferior): Ditto.
+	* mi/mi-cmd-env.c (mi_cmd_inferior_tty_set): New function.
+	(mi_cmd_inferior_tty_set): Ditto.
+	* mi/mi-cmds.c (mi_cmds): Add inferior-tty-set and inferior-tty-show
+	* mi/mi-cmds.h (mi_cmd_inferior_tty_set): Add prototype.
+	(mi_cmd_inferior_tty_show): Ditto.
+
 2005-07-06  Wu Zhou  <woodzltc@cn.ibm.com>
 
 	* tui/tui-win.c (parse_scrolling_args): Fix SEGV error with invalid
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 3d712e79360..b1929b78d3d 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,9 @@
+2005-07-06  Bob Rossi  <bob@brasko.net>
+
+	* gdb.texinfo (GDB/MI Miscellaneous Commands): Add -inferior-tty-set
+	and -inferior-tty-show.
+	(Input/Output): Document "set/show inferior-tty" and tty alias.
+
 2005-07-02  Nathan J. Williams  <nathanw@wasabisystems.com>
 
 	* gdb.texinfo (Packets): Change description of 'D' packet to note
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 84281725313..580df9d3f76 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -2095,7 +2095,24 @@ terminal.
 
 When you use the @code{tty} command or redirect input in the @code{run}
 command, only the input @emph{for your program} is affected.  The input
-for @value{GDBN} still comes from your terminal.
+for @value{GDBN} still comes from your terminal.  @code{tty} is an alias
+for @code{set inferior-tty}.
+
+@cindex inferior tty
+@cindex set inferior controlling terminal
+You can use the @code{show inferior-tty} command to tell @value{GDBN} to
+display the name of the terminal that will be used for future runs of your
+program.
+
+@table @code
+@item set inferior-tty /dev/ttyb
+@kindex set inferior-tty
+Set the tty for the program being debugged to /dev/ttyb.
+
+@item show inferior-tty
+@kindex show inferior-tty
+Show the current tty for the program being debugged.
+@end table
 
 @node Attach
 @section Debugging an already-running process
@@ -19181,6 +19198,57 @@ The corresponding @value{GDBN} command is @samp{interpreter-exec}.
 (@value{GDBP})
 @end smallexample
 
+@subheading The @code{-inferior-tty-set} Command
+@findex -inferior-tty-set
+
+@subheading Synopsis
+
+@smallexample
+-inferior-tty-set /dev/pts/1
+@end smallexample
+
+Set terminal for future runs of the program being debugged.
+
+@subheading @value{GDBN} Command
+
+The corresponding @value{GDBN} command is @samp{set inferior-tty /dev/pts/1}.
+
+@subheading Example
+
+@smallexample
+(@value{GDBP})
+-inferior-tty-set /dev/pts/1
+^done
+(@value{GDBP})
+@end smallexample
+
+@subheading The @code{-inferior-tty-show} Command
+@findex -inferior-tty-show
+
+@subheading Synopsis
+
+@smallexample
+-inferior-tty-show
+@end smallexample
+
+Show terminal for future runs of program being debugged.
+
+@subheading @value{GDBN} Command
+
+The corresponding @value{GDBN} command is @samp{show inferior-tty /dev/pts/1}.
+
+@subheading Example
+
+@smallexample
+(@value{GDBP})
+-inferior-tty-set /dev/pts/1
+^done
+(@value{GDBP})
+-inferior-tty-show
+^done,inferior_tty_terminal="/dev/pts/1"
+(@value{GDBP})
+@end smallexample
+
 @ignore
 @c %%%%%%%%%%%%%%%%%%%%%%%%%%%% SECTION %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 @node GDB/MI Kod Commands
diff --git a/gdb/fork-child.c b/gdb/fork-child.c
index f2691661d71..5cf5e493d3f 100644
--- a/gdb/fork-child.c
+++ b/gdb/fork-child.c
@@ -138,6 +138,7 @@ fork_inferior (char *exec_file_arg, char *allargs, char **env,
   char **save_our_env;
   int shell = 0;
   static char **argv;
+  const char *inferior_io_terminal = get_inferior_io_terminal ();
 
   /* If no exec file handed to us, get it from the exec-file command
      -- with a good, common error message if none is specified.  */
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index 86e8d9d778a..dff889f9cc1 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -136,7 +136,7 @@ static char **inferior_argv;
 
 /* File name for default use for standard in/out in the inferior.  */
 
-char *inferior_io_terminal;
+static char *inferior_io_terminal;
 
 /* Pid of our debugged inferior, or 0 if no inferior now.
    Since various parts of infrun.c test this to see whether there is a program
@@ -203,6 +203,24 @@ struct gdb_environ *inferior_environ;
 
 /* Accessor routines. */
 
+void 
+set_inferior_io_terminal (const char *terminal_name)
+{
+  if (inferior_io_terminal)
+    xfree (inferior_io_terminal);
+
+  if (!terminal_name)
+    inferior_io_terminal = NULL;
+  else
+    inferior_io_terminal = savestring (terminal_name, strlen (terminal_name));
+}
+
+const char *
+get_inferior_io_terminal (void)
+{
+  return inferior_io_terminal;
+}
+
 char *
 get_inferior_args (void)
 {
@@ -376,7 +394,7 @@ tty_command (char *file, int from_tty)
   if (file == 0)
     error_no_arg (_("terminal name for running target process"));
 
-  inferior_io_terminal = savestring (file, strlen (file));
+  set_inferior_io_terminal (file);
 }
 
 /* Kill the inferior if already running.  This function is designed
@@ -1988,11 +2006,15 @@ unset_command (char *args, int from_tty)
 void
 _initialize_infcmd (void)
 {
-  struct cmd_list_element *c;
-
-  c = add_com ("tty", class_run, tty_command,
-	       _("Set terminal for future runs of program being debugged."));
-  set_cmd_completer (c, filename_completer);
+  struct cmd_list_element *c = NULL;
+
+  /* add the filename of the terminal connected to inferior I/O */
+  add_setshow_filename_cmd ("inferior-tty", class_run,
+			    &inferior_io_terminal, _("\
+Set terminal for future runs of program being debugged."), _("\
+Show terminal for future runs of program being debugged."), _("\
+Usage: set inferior-tty /dev/pts/1"), NULL, NULL, &setlist, &showlist);
+  add_com_alias ("tty", "set inferior-tty", class_alias, 0);
 
   add_setshow_optional_filename_cmd ("args", class_run,
 				     &inferior_args, _("\
diff --git a/gdb/inferior.h b/gdb/inferior.h
index 4fbfcdef4ca..435bf7ee87e 100644
--- a/gdb/inferior.h
+++ b/gdb/inferior.h
@@ -103,9 +103,10 @@ extern void set_sigio_trap (void);
 
 extern void clear_sigio_trap (void);
 
-/* File name for default use for standard in/out in the inferior.  */
+/* Set/get file name for default use for standard in/out in the inferior.  */
 
-extern char *inferior_io_terminal;
+extern void set_inferior_io_terminal (const char *terminal_name);
+extern const char *get_inferior_io_terminal (void);
 
 /* Collected pid, tid, etc. of the debugged inferior.  When there's
    no inferior, PIDGET (inferior_ptid) will be 0. */
@@ -264,7 +265,7 @@ extern char *construct_inferior_arguments (struct gdbarch *, int, char **);
 
 /* From inflow.c */
 
-extern void new_tty_prefork (char *);
+extern void new_tty_prefork (const char *);
 
 extern int gdb_has_a_terminal (void);
 
diff --git a/gdb/inflow.c b/gdb/inflow.c
index 2961a3928e1..b88e3038b13 100644
--- a/gdb/inflow.c
+++ b/gdb/inflow.c
@@ -94,7 +94,7 @@ static void (*sigquit_ours) ();
 /* The name of the tty (from the `tty' command) that we gave to the inferior
    when it was last started.  */
 
-static char *inferior_thisrun_terminal;
+static const char *inferior_thisrun_terminal;
 
 /* Nonzero if our terminal settings are in effect.  Zero if the
    inferior's settings are in effect.  Ignored if !gdb_has_a_terminal
@@ -509,7 +509,7 @@ child_terminal_info (char *args, int from_tty)
    the terminal specified in the NEW_TTY_PREFORK call.  */
 
 void
-new_tty_prefork (char *ttyname)
+new_tty_prefork (const char *ttyname)
 {
   /* Save the name for later, for determining whether we and the child
      are sharing a tty.  */
diff --git a/gdb/mi/mi-cmd-env.c b/gdb/mi/mi-cmd-env.c
index 61fa7f8b098..b6e7fd7da1d 100644
--- a/gdb/mi/mi-cmd-env.c
+++ b/gdb/mi/mi-cmd-env.c
@@ -244,6 +244,30 @@ mi_cmd_env_dir (char *command, char **argv, int argc)
   return MI_CMD_DONE;
 }
 
+/* Set the inferior terminal device name.  */
+enum mi_cmd_result
+mi_cmd_inferior_tty_set (char *command, char **argv, int argc)
+{
+  set_inferior_io_terminal (argv[0]);
+
+  return MI_CMD_DONE;
+}
+
+/* Print the inferior terminal device name  */
+enum mi_cmd_result
+mi_cmd_inferior_tty_show (char *command, char **argv, int argc)
+{
+  const char *inferior_io_terminal = get_inferior_io_terminal ();
+  
+  if ( !mi_valid_noargs ("mi_cmd_inferior_tty_show", argc, argv))
+    error (_("mi_cmd_inferior_tty_show: Usage: No args"));
+
+  if (inferior_io_terminal)
+    ui_out_field_string (uiout, "inferior_tty_terminal", inferior_io_terminal);
+
+  return MI_CMD_DONE;
+}
+
 void 
 _initialize_mi_cmd_env (void)
 {
diff --git a/gdb/mi/mi-cmds.c b/gdb/mi/mi-cmds.c
index 6655d0581ab..c2a3ecac685 100644
--- a/gdb/mi/mi-cmds.c
+++ b/gdb/mi/mi-cmds.c
@@ -91,6 +91,8 @@ struct mi_cmd mi_cmds[] =
   { "gdb-show", { "show", 1 }, NULL, NULL },
   { "gdb-source", { NULL, 0 }, NULL, NULL },
   { "gdb-version", { "show version", 0 }, 0 },
+  { "inferior-tty-set", { NULL, 0 }, NULL, mi_cmd_inferior_tty_set},
+  { "inferior-tty-show", { NULL, 0 }, NULL, mi_cmd_inferior_tty_show},
   { "interpreter-exec", { NULL, 0 }, 0, mi_cmd_interpreter_exec},
   { "kod-info", { NULL, 0 }, NULL, NULL },
   { "kod-list", { NULL, 0 }, NULL, NULL },
diff --git a/gdb/mi/mi-cmds.h b/gdb/mi/mi-cmds.h
index 560963c40e9..0712608d13f 100644
--- a/gdb/mi/mi-cmds.h
+++ b/gdb/mi/mi-cmds.h
@@ -85,6 +85,8 @@ extern mi_cmd_args_ftype mi_cmd_exec_interrupt;
 extern mi_cmd_argv_ftype mi_cmd_file_list_exec_source_file;
 extern mi_cmd_argv_ftype mi_cmd_file_list_exec_source_files;
 extern mi_cmd_argv_ftype mi_cmd_gdb_exit;
+extern mi_cmd_argv_ftype mi_cmd_inferior_tty_set;
+extern mi_cmd_argv_ftype mi_cmd_inferior_tty_show;
 extern mi_cmd_argv_ftype mi_cmd_interpreter_exec;
 extern mi_cmd_argv_ftype mi_cmd_stack_info_depth;
 extern mi_cmd_argv_ftype mi_cmd_stack_info_frame;
diff --git a/gdb/nto-procfs.c b/gdb/nto-procfs.c
index e65dfc275e4..c7aac005b14 100644
--- a/gdb/nto-procfs.c
+++ b/gdb/nto-procfs.c
@@ -981,9 +981,10 @@ procfs_create_inferior (char *exec_file, char *allargs, char **env,
   pid_t pid;
   int flags, errn;
   char **argv, *args;
-  char *in = "", *out = "", *err = "";
+  const char *in = "", *out = "", *err = "";
   int fd, fds[3];
   sigset_t set;
+  const char *inferior_io_terminal = get_inferior_io_terminal ();
 
   argv = xmalloc (((strlen (allargs) + 1) / (unsigned) 2 + 2) *
 		  sizeof (*argv));
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index bc57d7fb0bd..3b60675cc8e 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2005-07-06  Bob Rossi  <bob@brasko.net>
+
+	* gdb.mi/mi-basics.exp (test_setshow_inferior_tty): Test MI tty
+	command.
+	(Copyright): Update copyright.
+
 2005-07-06  Wu Zhou  <woodzltc@cn.ibm.com>
 
 	* gdb.fortran/exprs.exp (test_arithmetic_expressions): Add five
diff --git a/gdb/testsuite/gdb.mi/mi-basics.exp b/gdb/testsuite/gdb.mi/mi-basics.exp
index 39a08736910..0d2b06ee98d 100644
--- a/gdb/testsuite/gdb.mi/mi-basics.exp
+++ b/gdb/testsuite/gdb.mi/mi-basics.exp
@@ -1,4 +1,4 @@
-# Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+# Copyright 1999, 2000, 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -236,12 +236,42 @@ proc test_path_specification {} {
 
 } 
 
+proc test_setshow_inferior_tty {} {
+    global mi_gdb_prompt
+
+    # Test that the commands,
+    #   -inferior-tty-set
+    #   -inferior-tty-show
+    # are setting/getting the same data in GDB.
+
+    mi_gdb_test "301-inferior-tty-show" \
+		"301\\\^done" \
+		"initial tty is empty"
+
+    mi_gdb_test "302-inferior-tty-set /dev/pts/1" \
+		"302\\\^done" \
+		"set tty to /dev/pts/1"
+
+    mi_gdb_test "303-inferior-tty-show" \
+		"303\\\^done,inferior_tty_terminal=\"/dev/pts/1\"" \
+		"tty was set correctly"
+
+    mi_gdb_test "304-inferior-tty-set" \
+		"304\\\^done" \
+		"set tty to the empty string"
+
+    mi_gdb_test "305-inferior-tty-show" \
+		"305\\\^done" \
+		"final tty is empty"
+}
+
 if [test_mi_interpreter_selection] {
   test_exec_and_symbol_mi_operatons
   test_breakpoints_deletion
   test_dir_specification
   test_cwd_specification
   test_path_specification
+  test_setshow_inferior_tty
 }
 
 mi_gdb_exit
diff --git a/gdb/win32-nat.c b/gdb/win32-nat.c
index bd775ad6b27..d9525727479 100644
--- a/gdb/win32-nat.c
+++ b/gdb/win32-nat.c
@@ -1735,6 +1735,7 @@ child_create_inferior (char *exec_file, char *allargs, char **env,
   const char *sh;
   int tty;
   int ostdin, ostdout, ostderr;
+  const char *inferior_io_terminal = get_inferior_io_terminal ();
 
   if (!exec_file)
     error (_("No executable specified, use `target exec'."));