* fix wrong entry dates

[deliverable/binutils-gdb.git] / gdb / inflow.c

diff --git a/gdb/inflow.c b/gdb/inflow.c
index 9cf24f4718dcf26559d8d80ae2c9699ab382df24..6a775316c84b8a7a69e5b5f504ea823241c41f59 100644 (file)
--- a/gdb/inflow.c
+++ b/gdb/inflow.c
@@ -1,12 +1,13 @@
 /* Low level interface to ptrace, for GDB when running under Unix.
 /* Low level interface to ptrace, for GDB when running under Unix.

-   Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
-   1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+   1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+   Free Software Foundation, Inc.

 
    This file is part of GDB.
 
    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
 
    This file is part of GDB.
 
    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

-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or

    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -15,9 +16,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License

-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #include "defs.h"
 #include "frame.h"
 
 #include "defs.h"
 #include "frame.h"


@@ -31,31 +30,18 @@
 #include "gdb_string.h"
 #include <signal.h>
 #include <fcntl.h>
 #include "gdb_string.h"
 #include <signal.h>
 #include <fcntl.h>

-#ifdef HAVE_SYS_SELECT_H
-#include <sys/select.h>
-#endif
-
-#ifdef HAVE_TERMIOS
-#define PROCESS_GROUP_TYPE pid_t
-#endif
+#include "gdb_select.h"

 
 

-#ifdef HAVE_TERMIO
-#define PROCESS_GROUP_TYPE int
-#endif
-
-#ifdef HAVE_SGTTY
-#ifdef SHORT_PGRP
-/* This is only used for the ultra.  Does it have pid_t?  */
-#define PROCESS_GROUP_TYPE short
-#else
-#define PROCESS_GROUP_TYPE int
-#endif
-#endif /* sgtty */
+#include "inflow.h"

 
 #ifdef HAVE_SYS_IOCTL_H
 #include <sys/ioctl.h>
 #endif
 
 
 #ifdef HAVE_SYS_IOCTL_H
 #include <sys/ioctl.h>
 #endif
 

+#ifndef O_NOCTTY
+#define O_NOCTTY 0
+#endif
+

 #if defined (SIGIO) && defined (FASYNC) && defined (FD_SET) && defined (F_SETOWN)
 static void handle_sigio (int);
 #endif
 #if defined (SIGIO) && defined (FASYNC) && defined (FD_SET) && defined (F_SETOWN)
 static void handle_sigio (int);
 #endif


@@ -104,7 +90,7 @@ static void (*sigquit_ours) ();
 /* The name of the tty (from the `tty' command) that we gave to the inferior
    when it was last started.  */
 
 /* 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
 
 /* Nonzero if our terminal settings are in effect.  Zero if the
    inferior's settings are in effect.  Ignored if !gdb_has_a_terminal


@@ -112,6 +98,24 @@ static char *inferior_thisrun_terminal;
 
 int terminal_is_ours;
 
 
 int terminal_is_ours;
 

+#ifdef PROCESS_GROUP_TYPE
+static PROCESS_GROUP_TYPE
+gdb_getpgrp (void)
+{
+  int process_group = -1;
+#ifdef HAVE_TERMIOS
+  process_group = tcgetpgrp (0);
+#endif
+#ifdef HAVE_TERMIO
+  process_group = getpgrp ();
+#endif
+#ifdef HAVE_SGTTY
+  ioctl (0, TIOCGPGRP, &process_group);
+#endif
+  return process_group;
+}
+#endif
+

 enum
   {
     yes, no, have_not_checked
 enum
   {
     yes, no, have_not_checked


@@ -139,7 +143,6 @@ gdb_has_a_terminal (void)
 #endif
 
       gdb_has_a_terminal_flag = no;
 #endif
 
       gdb_has_a_terminal_flag = no;

-      stdin_serial = serial_fdopen (0);

       if (stdin_serial != NULL)
        {
          our_ttystate = serial_get_tty_state (stdin_serial);
       if (stdin_serial != NULL)
        {
          our_ttystate = serial_get_tty_state (stdin_serial);


@@ -147,14 +150,8 @@ gdb_has_a_terminal (void)
          if (our_ttystate != NULL)
            {
              gdb_has_a_terminal_flag = yes;
          if (our_ttystate != NULL)
            {
              gdb_has_a_terminal_flag = yes;

-#ifdef HAVE_TERMIOS
-             our_process_group = tcgetpgrp (0);
-#endif
-#ifdef HAVE_TERMIO
-             our_process_group = getpgrp ();
-#endif
-#ifdef HAVE_SGTTY
-             ioctl (0, TIOCGPGRP, &our_process_group);
+#ifdef PROCESS_GROUP_TYPE
+             our_process_group = gdb_getpgrp ();

 #endif
            }
        }
 #endif
            }
        }


@@ -200,6 +197,23 @@ terminal_init_inferior_with_pgrp (int pgrp)
     }
 }
 
     }
 }
 

+/* Save the terminal settings again.  This is necessary for the TUI
+   when it switches to TUI or non-TUI mode;  curses changes the terminal
+   and gdb must be able to restore it correctly.  */
+
+void
+terminal_save_ours (void)
+{
+  if (gdb_has_a_terminal ())
+    {
+      /* We could just as well copy our_ttystate (if we felt like adding
+         a new function serial_copy_tty_state).  */
+      if (our_ttystate)
+        xfree (our_ttystate);
+      our_ttystate = serial_get_tty_state (stdin_serial);
+    }
+}
+

 void
 terminal_init_inferior (void)
 {
 void
 terminal_init_inferior (void)
 {


@@ -221,6 +235,7 @@ void
 terminal_inferior (void)
 {
   if (gdb_has_a_terminal () && terminal_is_ours
 terminal_inferior (void)
 {
   if (gdb_has_a_terminal () && terminal_is_ours

+      && inferior_ttystate != NULL

       && inferior_thisrun_terminal == 0)
     {
       int result;
       && inferior_thisrun_terminal == 0)
     {
       int result;


@@ -336,14 +351,13 @@ terminal_ours_1 (int output_only)
       if (inferior_ttystate)
        xfree (inferior_ttystate);
       inferior_ttystate = serial_get_tty_state (stdin_serial);
       if (inferior_ttystate)
        xfree (inferior_ttystate);
       inferior_ttystate = serial_get_tty_state (stdin_serial);

-#ifdef HAVE_TERMIOS
-      inferior_process_group = tcgetpgrp (0);
-#endif
-#ifdef HAVE_TERMIO
-      inferior_process_group = getpgrp ();
-#endif
-#ifdef HAVE_SGTTY
-      ioctl (0, TIOCGPGRP, &inferior_process_group);
+
+#ifdef PROCESS_GROUP_TYPE
+      if (!attach_flag)
+       /* If setpgrp failed in terminal_inferior, this would give us
+          our process group instead of the inferior's.  See
+          terminal_inferior for details.  */
+       inferior_process_group = gdb_getpgrp ();

 #endif
 
       /* Here we used to set ICANON in our ttystate, but I believe this
 #endif
 
       /* Here we used to set ICANON in our ttystate, but I believe this


@@ -405,29 +419,25 @@ terminal_ours_1 (int output_only)
       result = fcntl (0, F_SETFL, tflags_ours);
       result = fcntl (0, F_SETFL, tflags_ours);
 #endif
       result = fcntl (0, F_SETFL, tflags_ours);
       result = fcntl (0, F_SETFL, tflags_ours);
 #endif

-
-      result = result;         /* lint */

     }
 }
 
     }
 }
 

-/* ARGSUSED */

 void
 term_info (char *arg, int from_tty)
 {
   target_terminal_info (arg, from_tty);
 }
 
 void
 term_info (char *arg, int from_tty)
 {
   target_terminal_info (arg, from_tty);
 }
 

-/* ARGSUSED */

 void
 child_terminal_info (char *args, int from_tty)
 {
   if (!gdb_has_a_terminal ())
     {
 void
 child_terminal_info (char *args, int from_tty)
 {
   if (!gdb_has_a_terminal ())
     {

-      printf_filtered ("This GDB does not control a terminal.\n");
+      printf_filtered (_("This GDB does not control a terminal.\n"));

       return;
     }
 
       return;
     }
 

-  printf_filtered ("Inferior's terminal status (currently saved by GDB):\n");
+  printf_filtered (_("Inferior's terminal status (currently saved by GDB):\n"));

 
   /* First the fcntl flags.  */
   {
 
   /* First the fcntl flags.  */
   {


@@ -503,7 +513,7 @@ child_terminal_info (char *args, int from_tty)
    the terminal specified in the NEW_TTY_PREFORK call.  */
 
 void
    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.  */
 {
   /* Save the name for later, for determining whether we and the child
      are sharing a tty.  */


@@ -513,7 +523,7 @@ new_tty_prefork (char *ttyname)
 void
 new_tty (void)
 {
 void
 new_tty (void)
 {

-  register int tty;
+  int tty;

 
   if (inferior_thisrun_terminal == 0)
     return;
 
   if (inferior_thisrun_terminal == 0)
     return;


@@ -535,12 +545,7 @@ new_tty (void)
 #endif
 
   /* Now open the specified new terminal.  */
 #endif
 
   /* Now open the specified new terminal.  */

-
-#ifdef USE_O_NOCTTY

   tty = open (inferior_thisrun_terminal, O_RDWR | O_NOCTTY);
   tty = open (inferior_thisrun_terminal, O_RDWR | O_NOCTTY);

-#else
-  tty = open (inferior_thisrun_terminal, O_RDWR);
-#endif

   if (tty == -1)
     {
       print_sys_errmsg (inferior_thisrun_terminal, errno);
   if (tty == -1)
     {
       print_sys_errmsg (inferior_thisrun_terminal, errno);


@@ -563,6 +568,16 @@ new_tty (void)
       close (2);
       dup (tty);
     }
       close (2);
       dup (tty);
     }

+
+#ifdef TIOCSCTTY
+  /* Make tty our new controlling terminal.  */
+  if (ioctl (tty, TIOCSCTTY, 0) == -1)
+    /* Mention GDB in warning because it will appear in the inferior's
+       terminal instead of GDB's.  */
+    warning ("GDB: Failed to set controlling terminal: %s",
+            safe_strerror (errno));
+#endif
+

   if (tty > 2)
     close (tty);
 #endif /* !go32 && !win32 */
   if (tty > 2)
     close (tty);
 #endif /* !go32 && !win32 */


@@ -570,7 +585,6 @@ new_tty (void)
 \f
 /* Kill the inferior process.  Make us have no inferior.  */
 
 \f
 /* Kill the inferior process.  Make us have no inferior.  */
 

-/* ARGSUSED */

 static void
 kill_command (char *arg, int from_tty)
 {
 static void
 kill_command (char *arg, int from_tty)
 {


@@ -579,9 +593,9 @@ kill_command (char *arg, int from_tty)
      some targets don't have processes! */
 
   if (ptid_equal (inferior_ptid, null_ptid))
      some targets don't have processes! */
 
   if (ptid_equal (inferior_ptid, null_ptid))

-    error ("The program is not being run.");
+    error (_("The program is not being run."));

   if (!query ("Kill the program being debugged? "))
   if (!query ("Kill the program being debugged? "))

-    error ("Not confirmed.");
+    error (_("Not confirmed."));

   target_kill ();
 
   init_thread_list ();         /* Destroy thread info */
   target_kill ();
 
   init_thread_list ();         /* Destroy thread info */


@@ -590,18 +604,15 @@ kill_command (char *arg, int from_tty)
      print the state we are left in.  */
   if (target_has_stack)
     {
      print the state we are left in.  */
   if (target_has_stack)
     {

-      printf_filtered ("In %s,\n", target_longname);
-      if (selected_frame == NULL)
-       fputs_filtered ("No selected stack frame.\n", gdb_stdout);
-      else
-       print_stack_frame (selected_frame, selected_frame_level, 1);
+      printf_filtered (_("In %s,\n"), target_longname);
+      print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);

     }
     }

+  bfd_cache_close_all ();

 }
 \f
 /* Call set_sigint_trap when you need to pass a signal on to an attached
    process when handling SIGINT */
 
 }
 \f
 /* Call set_sigint_trap when you need to pass a signal on to an attached
    process when handling SIGINT */
 

-/* ARGSUSED */

 static void
 pass_signal (int signo)
 {
 static void
 pass_signal (int signo)
 {


@@ -643,7 +654,7 @@ handle_sigio (int signo)
 
   FD_ZERO (&readfds);
   FD_SET (target_activity_fd, &readfds);
 
   FD_ZERO (&readfds);
   FD_SET (target_activity_fd, &readfds);

-  numfds = select (target_activity_fd + 1, &readfds, NULL, NULL, NULL);
+  numfds = gdb_select (target_activity_fd + 1, &readfds, NULL, NULL, NULL);

   if (numfds >= 0 && FD_ISSET (target_activity_fd, &readfds))
     {
 #ifndef _WIN32
   if (numfds >= 0 && FD_ISSET (target_activity_fd, &readfds))
     {
 #ifndef _WIN32


@@ -681,18 +692,45 @@ void
 set_sigio_trap (void)
 {
   if (target_activity_function)
 set_sigio_trap (void)
 {
   if (target_activity_function)

-    internal_error (__FILE__, __LINE__, "failed internal consistency check");
+    internal_error (__FILE__, __LINE__, _("failed internal consistency check"));

 }
 
 void
 clear_sigio_trap (void)
 {
   if (target_activity_function)
 }
 
 void
 clear_sigio_trap (void)
 {
   if (target_activity_function)

-    internal_error (__FILE__, __LINE__, "failed internal consistency check");
+    internal_error (__FILE__, __LINE__, _("failed internal consistency check"));

 }
 #endif /* No SIGIO.  */
 \f
 
 }
 #endif /* No SIGIO.  */
 \f
 

+/* Create a new session if the inferior will run in a different tty.
+   A session is UNIX's way of grouping processes that share a controlling
+   terminal, so a new one is needed if the inferior terminal will be
+   different from GDB's.
+
+   Returns the session id of the new session, 0 if no session was created
+   or -1 if an error occurred.  */
+pid_t
+create_tty_session (void)
+{
+#ifdef HAVE_SETSID
+  pid_t ret;
+
+  if (!job_control || inferior_thisrun_terminal == 0)
+    return 0;
+
+  ret = setsid ();
+  if (ret == -1)
+    warning ("Failed to create new terminal session: setsid: %s",
+            safe_strerror (errno));
+
+  return ret;
+#else
+  return 0;
+#endif /* HAVE_SETSID */
+}
+

 /* This is here because this is where we figure out whether we (probably)
    have job control.  Just using job_control only does part of it because
    setpgid or setpgrp might not exist on a system without job control.
 /* This is here because this is where we figure out whether we (probably)
    have job control.  Just using job_control only does part of it because
    setpgid or setpgrp might not exist on a system without job control.


@@ -730,14 +768,26 @@ gdb_setpgid (void)
   return retval;
 }
 
   return retval;
 }
 

+/* Get all the current tty settings (including whether we have a
+   tty at all!).  We can't do this in _initialize_inflow because
+   serial_fdopen() won't work until the serial_ops_list is
+   initialized, but we don't want to do it lazily either, so
+   that we can guarantee stdin_serial is opened if there is
+   a terminal.  */
+void
+initialize_stdin_serial (void)
+{
+  stdin_serial = serial_fdopen (0);
+}
+

 void
 _initialize_inflow (void)
 {
   add_info ("terminal", term_info,
 void
 _initialize_inflow (void)
 {
   add_info ("terminal", term_info,

-           "Print inferior's saved terminal status.");
+           _("Print inferior's saved terminal status."));

 
   add_com ("kill", class_run, kill_command,
 
   add_com ("kill", class_run, kill_command,

-          "Kill execution of program being debugged.");
+          _("Kill execution of program being debugged."));

 
   inferior_ptid = null_ptid;
 
 
   inferior_ptid = null_ptid;