trunk/lttv/lttv/modules/gui/tracecontrol/tracecontrol.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2005 Mathieu Desnoyers
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include <glib.h>
  24 #include <glib/gprintf.h>
  25 #include <string.h>
  26 #include <gtk/gtk.h>
  27 #include <gdk/gdk.h>
  28 #include <gdk/gdkkeysyms.h>
  29
  30 #include <lttv/lttv.h>
  31 #include <lttv/module.h>
  32 #include <lttv/hook.h>
  33
  34 #include <lttvwindow/lttvwindow.h>
  35 #include <lttvwindow/lttvwindowtraces.h>
  36 #include <lttvwindow/callbacks.h>
  37 #include <lttvwindow/lttv_plugin_tab.h>
  38
  39 #include "hTraceControlInsert.xpm"
  40 #include "TraceControlStart.xpm"
  41 #include "TraceControlPause.xpm"
  42 #include "TraceControlStop.xpm"
  43
  44 #include <sys/types.h>
  45 #include <unistd.h>
  46 #include <stdlib.h>
  47 #include <pty.h>
  48 #include <utmp.h>
  49 #include <sys/wait.h>
  50 #include <sys/poll.h>
  51 #include <errno.h>
  52 #include <fcntl.h>
  53 #include <sched.h>
  54
  55 #define MAX_ARGS_LEN PATH_MAX * 10
  56
  57 GSList *g_control_list = NULL ;
  58
  59 /*! \file lttv/modules/gui/tracecontrol/tracecontrol.c
  60  *  \brief Graphic trace start/stop control interface.
  61  *
  62  * This plugin interacts with lttctl to start/stop tracing. It needs to take the
  63  * root password to be able to interact with lttctl.
  64  *
  65  */
  66
  67 typedef struct _ControlData ControlData;
  68
  69 /*
  70  * Prototypes
  71  */
  72 GtkWidget *guicontrol_get_widget(ControlData *tcd);
  73 ControlData *gui_control(LttvPluginTab *ptab);
  74 void gui_control_destructor(ControlData *tcd);
  75 GtkWidget* h_guicontrol(LttvPlugin *plugin);
  76 void control_destroy_walk(gpointer data, gpointer user_data);
  77
  78 /*
  79  * Callback functions
  80  */
  81
  82 static void start_clicked (GtkButton *button, gpointer user_data);
  83 static void pause_clicked (GtkButton *button, gpointer user_data);
  84 static void unpause_clicked (GtkButton *button, gpointer user_data);
  85 static void stop_clicked (GtkButton *button, gpointer user_data);
  86
  87
  88 /**
  89  *  @struct _ControlData
  90  *
  91  *  @brief Main structure of gui control
  92  */
  93 struct _ControlData {
  94   Tab *tab;                             /**< current tab of module */
  95
  96   GtkWidget *window;                  /**< window */
  97
  98   GtkWidget *main_box;                /**< main container */
  99   GtkWidget *start_button;
 100   GtkWidget *pause_button;
 101   GtkWidget *unpause_button;
 102   GtkWidget *stop_button;
 103   GtkWidget *username_label;
 104   GtkWidget *username_entry;
 105   GtkWidget *password_label;
 106   GtkWidget *password_entry;
 107   GtkWidget *channel_dir_label;
 108   GtkWidget *channel_dir_entry;
 109   GtkWidget *trace_dir_label;
 110   GtkWidget *trace_dir_entry;
 111   GtkWidget *trace_name_label;
 112   GtkWidget *trace_name_entry;
 113   GtkWidget *trace_mode_label;
 114   GtkWidget *trace_mode_combo;
 115   GtkWidget *start_daemon_label;
 116   GtkWidget *start_daemon_check;
 117   GtkWidget *append_label;
 118   GtkWidget *append_check;
 119   GtkWidget *optional_label;
 120   GtkWidget *subbuf_size_label;
 121   GtkWidget *subbuf_size_entry;
 122   GtkWidget *subbuf_num_label;
 123   GtkWidget *subbuf_num_entry;
 124   GtkWidget *lttd_threads_label;
 125   GtkWidget *lttd_threads_entry;
 126   GtkWidget *lttctl_path_label;
 127   GtkWidget *lttctl_path_entry;
 128   GtkWidget *lttd_path_label;
 129   GtkWidget *lttd_path_entry;
 130 };
 131
 132 /**
 133  *  @fn GtkWidget* guicontrol_get_widget(ControlData*)
 134  *
 135  *  This function returns the current main widget
 136  *  used by this module
 137  *  @param tcd the module struct
 138  *  @return The main widget
 139  */
 140 GtkWidget*
 141 guicontrol_get_widget(ControlData *tcd)
 142 {
 143   return tcd->window;
 144 }
 145
 146 /**
 147  *  @fn ControlData* gui_control(Tab*)
 148  *
 149  *  Constructor is used to create ControlData data structure.
 150  *  @param tab The tab structure used by the widget
 151  *  @return The Filter viewer data created.
 152  */
 153 ControlData*
 154 gui_control(LttvPluginTab *ptab)
 155 {
 156   Tab *tab = ptab->tab;
 157   g_debug("filter::gui_control()");
 158
 159   unsigned i;
 160   GtkCellRenderer *renderer;
 161   GtkTreeViewColumn *column;
 162
 163   ControlData* tcd = g_new(ControlData,1);
 164
 165   tcd->tab  = tab;
 166
 167   tcd->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 168   gtk_window_set_title(GTK_WINDOW(tcd->window), "LTTng Trace Control");
 169   /*
 170    * Initiating GtkTable layout
 171    * starts with 2 rows and 5 columns and
 172    * expands when expressions added
 173    */
 174   tcd->main_box = gtk_table_new(14,7,FALSE);
 175   gtk_table_set_row_spacings(GTK_TABLE(tcd->main_box),5);
 176   gtk_table_set_col_spacings(GTK_TABLE(tcd->main_box),5);
 177
 178   gtk_container_add(GTK_CONTAINER(tcd->window), GTK_WIDGET(tcd->main_box));
 179
 180   GList *focus_chain = NULL;
 181
 182   /*
 183    * start/pause/stop buttons
 184    */
 185   GdkPixbuf *pixbuf;
 186   GtkWidget *image;
 187   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStart_xpm);
 188   image = gtk_image_new_from_pixbuf(pixbuf);
 189   tcd->start_button = gtk_button_new_with_label("start");
 190   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->start_button), image);
 191   g_object_set(G_OBJECT(tcd->start_button), "image", image, NULL);
 192   gtk_button_set_alignment(GTK_BUTTON(tcd->start_button), 0.0, 0.0);
 193   gtk_widget_show (tcd->start_button);
 194   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_button,6,7,0,1,GTK_FILL,GTK_FILL,2,2);
 195
 196   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlPause_xpm);
 197   image = gtk_image_new_from_pixbuf(pixbuf);
 198   tcd->pause_button = gtk_button_new_with_label("pause");
 199   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->pause_button), image);
 200   g_object_set(G_OBJECT(tcd->pause_button), "image", image, NULL);
 201   gtk_button_set_alignment(GTK_BUTTON(tcd->pause_button), 0.0, 0.0);
 202   gtk_widget_show (tcd->pause_button);
 203   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->pause_button,6,7,1,2,GTK_FILL,GTK_FILL,2,2);
 204
 205   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlPause_xpm);
 206   image = gtk_image_new_from_pixbuf(pixbuf);
 207   tcd->unpause_button = gtk_button_new_with_label("unpause");
 208   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->unpause_button), image);
 209   g_object_set(G_OBJECT(tcd->unpause_button), "image", image, NULL);
 210   gtk_button_set_alignment(GTK_BUTTON(tcd->unpause_button), 0.0, 0.0);
 211   gtk_widget_show (tcd->unpause_button);
 212   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->unpause_button,6,7,2,3,GTK_FILL,GTK_FILL,2,2);
 213
 214   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStop_xpm);
 215   image = gtk_image_new_from_pixbuf(pixbuf);
 216   tcd->stop_button = gtk_button_new_with_label("stop");
 217   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->stop_button), image);
 218   g_object_set(G_OBJECT(tcd->stop_button), "image", image, NULL);
 219   gtk_button_set_alignment(GTK_BUTTON(tcd->stop_button), 0.0, 0.0);
 220   gtk_widget_show (tcd->stop_button);
 221   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->stop_button,6,7,3,4,GTK_FILL,GTK_FILL,2,2);
 222
 223   /*
 224    *  First half of the filter window
 225    *  - textual entry of filter expression
 226    *  - processing button
 227    */
 228   tcd->username_label = gtk_label_new("Username:");
 229   gtk_widget_show (tcd->username_label);
 230   tcd->username_entry = gtk_entry_new();
 231   gtk_entry_set_text(GTK_ENTRY(tcd->username_entry),"root");
 232   gtk_widget_show (tcd->username_entry);
 233   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->username_label,0,2,0,1,GTK_FILL,GTK_FILL,2,2);
 234   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->username_entry,2,6,0,1,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 235
 236
 237
 238   tcd->password_label = gtk_label_new("Password:");
 239   gtk_widget_show (tcd->password_label);
 240   tcd->password_entry = gtk_entry_new();
 241   gtk_entry_set_visibility(GTK_ENTRY(tcd->password_entry), FALSE);
 242   gtk_widget_show (tcd->password_entry);
 243   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->password_label,0,2,1,2,GTK_FILL,GTK_FILL,2,2);
 244   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->password_entry,2,6,1,2,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 245
 246
 247   tcd->channel_dir_label = gtk_label_new("Channel directory:");
 248   gtk_widget_show (tcd->channel_dir_label);
 249   tcd->channel_dir_entry = gtk_entry_new();
 250   gtk_entry_set_text(GTK_ENTRY(tcd->channel_dir_entry),"/mnt/debugfs/ltt");
 251   gtk_widget_show (tcd->channel_dir_entry);
 252   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->channel_dir_label,0,2,2,3,GTK_FILL,GTK_FILL,2,2);
 253   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->channel_dir_entry,2,6,2,3,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 254
 255   tcd->trace_dir_label = gtk_label_new("Trace directory:");
 256   gtk_widget_show (tcd->trace_dir_label);
 257   tcd->trace_dir_entry = gtk_entry_new();
 258   gtk_entry_set_text(GTK_ENTRY(tcd->trace_dir_entry),"/tmp/trace1");
 259   gtk_widget_show (tcd->trace_dir_entry);
 260   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_dir_label,0,2,3,4,GTK_FILL,GTK_FILL,2,2);
 261   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_dir_entry,2,6,3,4,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 262
 263   tcd->trace_name_label = gtk_label_new("Trace name:");
 264   gtk_widget_show (tcd->trace_name_label);
 265   tcd->trace_name_entry = gtk_entry_new();
 266   gtk_entry_set_text(GTK_ENTRY(tcd->trace_name_entry),"trace");
 267   gtk_widget_show (tcd->trace_name_entry);
 268   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_name_label,0,2,4,5,GTK_FILL,GTK_FILL,2,2);
 269   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_name_entry,2,6,4,5,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 270
 271   tcd->trace_mode_label = gtk_label_new("Trace mode ");
 272   gtk_widget_show (tcd->trace_mode_label);
 273   tcd->trace_mode_combo = gtk_combo_box_new_text();
 274   gtk_combo_box_append_text(GTK_COMBO_BOX(tcd->trace_mode_combo),
 275       "normal");
 276   gtk_combo_box_append_text(GTK_COMBO_BOX(tcd->trace_mode_combo),
 277       "flight recorder");
 278   gtk_combo_box_set_active(GTK_COMBO_BOX(tcd->trace_mode_combo), 0);
 279   gtk_widget_show (tcd->trace_mode_combo);
 280   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_mode_label,0,2,5,6,GTK_FILL,GTK_FILL,2,2);
 281   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_mode_combo,2,6,5,6,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 282
 283   tcd->start_daemon_label = gtk_label_new("Start daemon ");
 284   gtk_widget_show (tcd->start_daemon_label);
 285   tcd->start_daemon_check = gtk_check_button_new();
 286   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tcd->start_daemon_check), TRUE);
 287   gtk_widget_show (tcd->start_daemon_check);
 288   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_daemon_label,0,2,6,7,GTK_FILL,GTK_FILL,2,2);
 289   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_daemon_check,2,6,6,7,GTK_FILL,GTK_FILL,0,0);
 290
 291   tcd->append_label = gtk_label_new("Append to trace ");
 292   gtk_widget_show (tcd->append_label);
 293   tcd->append_check = gtk_check_button_new();
 294   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tcd->append_check), FALSE);
 295   gtk_widget_show (tcd->append_check);
 296   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->append_label,0,2,7,8,GTK_FILL,GTK_FILL,2,2);
 297   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->append_check,2,6,7,8,GTK_FILL,GTK_FILL,0,0);
 298
 299
 300   tcd->optional_label = gtk_label_new("Optional fields ");
 301   gtk_widget_show (tcd->optional_label);
 302   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->optional_label,0,6,8,9,GTK_FILL,GTK_FILL,2,2);
 303
 304   tcd->subbuf_size_label = gtk_label_new("Subbuffer size:");
 305   gtk_widget_show (tcd->subbuf_size_label);
 306   tcd->subbuf_size_entry = gtk_entry_new();
 307   gtk_widget_show (tcd->subbuf_size_entry);
 308   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_size_label,0,2,9,10,GTK_FILL,GTK_FILL,2,2);
 309   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_size_entry,2,6,9,10,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 310
 311   tcd->subbuf_num_label = gtk_label_new("Number of subbuffers:");
 312   gtk_widget_show (tcd->subbuf_num_label);
 313   tcd->subbuf_num_entry = gtk_entry_new();
 314   gtk_widget_show (tcd->subbuf_num_entry);
 315   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_num_label,0,2,10,11,GTK_FILL,GTK_FILL,2,2);
 316   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_num_entry,2,6,10,11,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 317
 318   tcd->lttd_threads_label = gtk_label_new("Number of lttd threads:");
 319   gtk_widget_show (tcd->lttd_threads_label);
 320   tcd->lttd_threads_entry = gtk_entry_new();
 321   gtk_entry_set_text(GTK_ENTRY(tcd->lttd_threads_entry), "1");
 322   gtk_widget_show (tcd->lttd_threads_entry);
 323   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_threads_label,0,2,11,12,GTK_FILL,GTK_FILL,2,2);
 324   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_threads_entry,2,6,11,12,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 325
 326   tcd->lttctl_path_label = gtk_label_new("path to lttctl:");
 327   gtk_widget_show (tcd->lttctl_path_label);
 328   tcd->lttctl_path_entry = gtk_entry_new();
 329   gtk_entry_set_text(GTK_ENTRY(tcd->lttctl_path_entry),PACKAGE_BIN_DIR "/lttctl");
 330   gtk_widget_show (tcd->lttctl_path_entry);
 331   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttctl_path_label,0,2,12,13,GTK_FILL,GTK_FILL,2,2);
 332   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttctl_path_entry,2,6,12,13,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 333
 334
 335   tcd->lttd_path_label = gtk_label_new("path to lttd:");
 336   gtk_widget_show (tcd->lttd_path_label);
 337   tcd->lttd_path_entry = gtk_entry_new();
 338   gtk_entry_set_text(GTK_ENTRY(tcd->lttd_path_entry),PACKAGE_BIN_DIR "/lttd");
 339   gtk_widget_show (tcd->lttd_path_entry);
 340   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_path_label,0,2,13,14,GTK_FILL,GTK_FILL,2,2);
 341   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_path_entry,2,6,13,14,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 342
 343
 344   focus_chain = g_list_append (focus_chain, tcd->username_entry);
 345   focus_chain = g_list_append (focus_chain, tcd->password_entry);
 346   focus_chain = g_list_append (focus_chain, tcd->start_button);
 347   focus_chain = g_list_append (focus_chain, tcd->pause_button);
 348   focus_chain = g_list_append (focus_chain, tcd->unpause_button);
 349   focus_chain = g_list_append (focus_chain, tcd->stop_button);
 350   focus_chain = g_list_append (focus_chain, tcd->channel_dir_entry);
 351   focus_chain = g_list_append (focus_chain, tcd->trace_dir_entry);
 352   focus_chain = g_list_append (focus_chain, tcd->trace_name_entry);
 353   focus_chain = g_list_append (focus_chain, tcd->trace_mode_combo);
 354   focus_chain = g_list_append (focus_chain, tcd->start_daemon_check);
 355   focus_chain = g_list_append (focus_chain, tcd->append_check);
 356   focus_chain = g_list_append (focus_chain, tcd->subbuf_size_entry);
 357   focus_chain = g_list_append (focus_chain, tcd->subbuf_num_entry);
 358   focus_chain = g_list_append (focus_chain, tcd->lttd_threads_entry);
 359   focus_chain = g_list_append (focus_chain, tcd->lttctl_path_entry);
 360   focus_chain = g_list_append (focus_chain, tcd->lttd_path_entry);
 361
 362   gtk_container_set_focus_chain(GTK_CONTAINER(tcd->main_box), focus_chain);
 363
 364   g_list_free(focus_chain);
 365
 366   g_signal_connect(G_OBJECT(tcd->start_button), "clicked",
 367       (GCallback)start_clicked, tcd);
 368   g_signal_connect(G_OBJECT(tcd->pause_button), "clicked",
 369       (GCallback)pause_clicked, tcd);
 370   g_signal_connect(G_OBJECT(tcd->unpause_button), "clicked",
 371       (GCallback)unpause_clicked, tcd);
 372   g_signal_connect(G_OBJECT(tcd->stop_button), "clicked",
 373       (GCallback)stop_clicked, tcd);
 374
 375   /*
 376    * show main container
 377    */
 378   gtk_widget_show(tcd->main_box);
 379   gtk_widget_show(tcd->window);
 380
 381
 382   g_object_set_data_full(
 383       G_OBJECT(guicontrol_get_widget(tcd)),
 384       "control_viewer_data",
 385       tcd,
 386       (GDestroyNotify)gui_control_destructor);
 387
 388   g_control_list = g_slist_append(
 389       g_control_list,
 390       tcd);
 391
 392   return tcd;
 393 }
 394
 395
 396 /**
 397  *  @fn void gui_control_destructor(ControlData*)
 398  *
 399  *  Destructor for the filter gui module
 400  *  @param tcd The module structure
 401  */
 402 void
 403 gui_control_destructor(ControlData *tcd)
 404 {
 405   Tab *tab = tcd->tab;
 406
 407   /* May already been done by GTK window closing */
 408   if(GTK_IS_WIDGET(guicontrol_get_widget(tcd))){
 409     g_info("widget still exists");
 410   }
 411 //  if(tab != NULL) {
 412 //    lttvwindow_unregister_traceset_notify(tcd->tab,
 413 //                                          filter_traceset_changed,
 414 //                                          filter_viewer_data);
 415 //  }
 416   lttvwindowtraces_background_notify_remove(tcd);
 417
 418   g_control_list = g_slist_remove(g_control_list, tcd);
 419
 420   g_free(tcd);
 421 }
 422
 423 static int execute_command(const gchar *command, const gchar *username,
 424     const gchar *password, const gchar *lttd_path)
 425 {
 426   pid_t pid;
 427   int fdpty;
 428   pid = forkpty(&fdpty, NULL, NULL, NULL);
 429   int retval = 0;
 430
 431   if(pid > 0) {
 432     /* parent */
 433     gchar buf[256];
 434     int status;
 435     ssize_t count;
 436     /* discuss with su */
 437     struct timeval timeout;
 438     timeout.tv_sec = 1;
 439     timeout.tv_usec = 0;
 440
 441     struct pollfd pollfd;
 442     int num_rdy;
 443     int num_hup = 0;
 444                 enum read_state { GET_LINE, GET_SEMI, GET_SPACE } read_state = GET_LINE;
 445
 446                 retval = fcntl(fdpty, F_SETFL, O_WRONLY);
 447                 if(retval == -1) {
 448                         perror("Error in fcntl");
 449                         goto wait_child;
 450                 }
 451
 452     /* Read the output from the child terminal before the prompt. If no data in
 453      * 200 ms, we stop reading to give the password */
 454     g_info("Reading from child console...");
 455     while(1) {
 456       pollfd.fd = fdpty;
 457       pollfd.events = POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL;
 458
 459       num_rdy = poll(&pollfd, 1, -1);
 460       if(num_rdy == -1) {
 461         perror("Poll error");
 462         goto wait_child;
 463       }
 464
 465       /* Timeout : Stop waiting for chars */
 466       if(num_rdy == 0) goto wait_child;
 467
 468       switch(pollfd.revents) {
 469         case POLLERR:
 470           g_warning("Error returned in polling fd\n");
 471           num_hup++;
 472           break;
 473         case POLLHUP:
 474           g_info("Polling FD : hung up.");
 475           num_hup++;
 476           break;
 477         case POLLNVAL:
 478           g_warning("Polling fd tells it is not open");
 479           num_hup++;
 480           break;
 481         case POLLPRI:
 482         case POLLIN:
 483           count = read (fdpty, buf, 256);
 484           if(count > 0) {
 485                                                 unsigned int i;
 486             buf[count] = '\0';
 487             g_printf("%s", buf);
 488                                                 for(i=0; i<count; i++) {
 489                                                         switch(read_state) {
 490                                                                 case GET_LINE:
 491                                                                         if(buf[i] == '\n') {
 492                                                                                 read_state = GET_SEMI;
 493                                                                                 g_debug("Tracecontrol input line skip\n");
 494                                                                         }
 495                                                                         break;
 496                                                                 case GET_SEMI:
 497                                                                         if(buf[i] == ':') {
 498                                                                                 g_debug("Tracecontrol input  : marker found\n");
 499                                                                                 read_state = GET_SPACE;
 500                                                                         }
 501                                                                         break;
 502                                                                 case GET_SPACE:
 503                                                                         if(buf[i] == ' ') {
 504                                                                                 g_debug("Tracecontrol input space marker found\n");
 505                                                                                 goto write_password;
 506                                                                         }
 507                                                                         break;
 508                                                         }
 509                                                 }
 510           } else if(count == -1) {
 511             perror("Error in read");
 512             goto wait_child;
 513           }
 514           break;
 515       }
 516       if(num_hup > 0) {
 517         g_warning("Child hung up too fast");
 518         goto wait_child;
 519       }
 520     }
 521 write_password:
 522                 fsync(fdpty);
 523                 pollfd.fd = fdpty;
 524                 pollfd.events = POLLOUT|POLLERR|POLLHUP|POLLNVAL;
 525
 526                 num_rdy = poll(&pollfd, 1, -1);
 527                 if(num_rdy == -1) {
 528                         perror("Poll error");
 529                         goto wait_child;
 530                 }
 531
 532     /* Write the password */
 533     g_info("Got su prompt, now writing password...");
 534     int ret;
 535                 sleep(1);
 536     ret = write(fdpty, password, strlen(password));
 537     if(ret < 0) perror("Error in write");
 538     ret = write(fdpty, "\n", 1);
 539     if(ret < 0) perror("Error in write");
 540     fsync(fdpty);
 541     /* Take the output from the terminal and show it on the real console */
 542     g_info("Getting data from child terminal...");
 543     while(1) {
 544       int num_hup = 0;
 545       pollfd.fd = fdpty;
 546       pollfd.events = POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL;
 547
 548       num_rdy = poll(&pollfd, 1, -1);
 549       if(num_rdy == -1) {
 550         perror("Poll error");
 551         goto wait_child;
 552       }
 553       if(num_rdy == 0) break;
 554
 555                         if(pollfd.revents & (POLLERR|POLLNVAL)) {
 556                                 g_warning("Error returned in polling fd\n");
 557                                 num_hup++;
 558                         }
 559
 560                         if(pollfd.revents & (POLLIN|POLLPRI) ) {
 561                                 count = read (fdpty, buf, 256);
 562                                 if(count > 0) {
 563                                         buf[count] = '\0';
 564                                         printf("%s", buf);
 565                                 } else if(count == -1) {
 566                                         perror("Error in read");
 567                                         goto wait_child;
 568                                 }
 569                         }
 570
 571                         if(pollfd.revents & POLLHUP) {
 572         g_info("Polling FD : hung up.");
 573         num_hup++;
 574                         }
 575
 576       if(num_hup > 0) goto wait_child;
 577     }
 578 wait_child:
 579     g_info("Waiting for child exit...");
 580
 581     ret = waitpid(pid, &status, 0);
 582
 583     if(ret == -1) {
 584       g_warning("An error occured in wait : %s",
 585           strerror(errno));
 586     } else {
 587       if(WIFEXITED(status))
 588         if(WEXITSTATUS(status) != 0) {
 589           retval = WEXITSTATUS(status);
 590           g_warning("An error occured in the su command : %s",
 591               strerror(retval));
 592         }
 593     }
 594
 595     g_info("Child exited.");
 596
 597   } else if(pid == 0) {
 598     /* Setup environment variables */
 599     if(strcmp(lttd_path, "") != 0)
 600       setenv("LTT_DAEMON", lttd_path, 1);
 601
 602                 /* One comment line (must be only one) */
 603     g_printf("Executing (as %s) : %s\n", username, command);
 604
 605     execlp("su", "su", "-p", "-c", command, username, NULL);
 606     exit(-1); /* not supposed to happen! */
 607
 608     //gint ret = execvp();
 609
 610   } else {
 611     /* error */
 612     g_warning("Error happened when forking for su");
 613   }
 614
 615   return retval;
 616 }
 617
 618
 619 /* Callbacks */
 620
 621 void start_clicked (GtkButton *button, gpointer user_data)
 622 {
 623   ControlData *tcd = (ControlData*)user_data;
 624
 625   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 626   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 627   const gchar *channel_dir =
 628     gtk_entry_get_text(GTK_ENTRY(tcd->channel_dir_entry));
 629   const gchar *trace_dir = gtk_entry_get_text(GTK_ENTRY(tcd->trace_dir_entry));
 630   const gchar *trace_name =
 631     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 632
 633   const gchar *trace_mode_sel;
 634   GtkTreeIter iter;
 635
 636   gtk_combo_box_get_active_iter(GTK_COMBO_BOX(tcd->trace_mode_combo), &iter);
 637   gtk_tree_model_get(
 638       gtk_combo_box_get_model(GTK_COMBO_BOX(tcd->trace_mode_combo)),
 639       &iter, 0, &trace_mode_sel, -1);
 640   //const gchar *trace_mode_sel =
 641     //2.6+ gtk_combo_box_get_active_text(GTK_COMBO_BOX(tcd->trace_mode_combo));
 642   const gchar *trace_mode;
 643   if(strcmp(trace_mode_sel, "normal") == 0)
 644     trace_mode = "normal";
 645   else
 646     trace_mode = "flight";
 647
 648   gboolean start_daemon =
 649     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tcd->start_daemon_check));
 650
 651   gboolean append =
 652     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tcd->append_check));
 653
 654   const gchar *subbuf_size =
 655     gtk_entry_get_text(GTK_ENTRY(tcd->subbuf_size_entry));
 656   const gchar *subbuf_num =
 657     gtk_entry_get_text(GTK_ENTRY(tcd->subbuf_num_entry));
 658         const gchar *threads_num =
 659     gtk_entry_get_text(GTK_ENTRY(tcd->lttd_threads_entry));
 660   const gchar *lttctl_path =
 661     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 662   const gchar *lttd_path = gtk_entry_get_text(GTK_ENTRY(tcd->lttd_path_entry));
 663
 664   /* Setup arguments to su */
 665   /* child */
 666   gchar args[MAX_ARGS_LEN];
 667   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 668
 669   args[0] = '\0';
 670
 671   /* Command */
 672   strncat(args, "exec", args_left);
 673   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 674
 675   /* space */
 676   strncat(args, " ", args_left);
 677   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 678
 679   if(strcmp(lttctl_path, "") == 0)
 680     strncat(args, "lttctl", args_left);
 681   else
 682     strncat(args, lttctl_path, args_left);
 683   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 684
 685   /* space */
 686   strncat(args, " ", args_left);
 687   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 688
 689   /* Start daemon ? */
 690   if(start_daemon) {
 691     strncat(args, "-C", args_left);
 692     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 693   } else {
 694     /* Simply create the channel and then start tracing */
 695     //strncat(args, "-b", args_left);
 696     //args_left = MAX_ARGS_LEN - strlen(args) - 1;
 697   }
 698
 699   /* space */
 700   strncat(args, " ", args_left);
 701   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 702
 703   /* channel dir */
 704   strncat(args, "--channel_root ", args_left);
 705   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 706   strncat(args, channel_dir, args_left);
 707   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 708
 709   /* space */
 710   strncat(args, " ", args_left);
 711   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 712
 713   /* trace dir */
 714   strncat(args, "-w ", args_left);
 715   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 716   strncat(args, trace_dir, args_left);
 717   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 718
 719   /* space */
 720   strncat(args, " ", args_left);
 721   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 722
 723   if(strcmp(trace_mode, "flight") == 0) {
 724     strncat(args, "-o channel.all.overwrite=1", args_left);
 725     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 726   } else {
 727     strncat(args, "-o channel.all.overwrite=0", args_left);
 728     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 729   }
 730
 731   /* Append to trace ? */
 732   if(append) {
 733     /* space */
 734     strncat(args, " ", args_left);
 735     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 736     strncat(args, "-a", args_left);
 737     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 738   }
 739
 740   /* optional arguments */
 741   /* subbuffer size */
 742   if(strcmp(subbuf_size, "") != 0) {
 743     /* space */
 744     strncat(args, " ", args_left);
 745     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 746
 747     strncat(args, "-o channel.all.bufsize=", args_left);
 748     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 749     strncat(args, subbuf_size, args_left);
 750     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 751   }
 752
 753   /* number of subbuffers */
 754   if(strcmp(subbuf_num, "") != 0) {
 755     /* space */
 756     strncat(args, " ", args_left);
 757     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 758
 759     strncat(args, "-o channel.all.bufnum=", args_left);
 760     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 761     strncat(args, subbuf_num, args_left);
 762     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 763   }
 764
 765   /* number of lttd threads */
 766   if(strcmp(threads_num, "") != 0) {
 767     /* space */
 768     strncat(args, " ", args_left);
 769     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 770
 771     strncat(args, "-n ", args_left);
 772     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 773     strncat(args, threads_num, args_left);
 774     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 775   }
 776
 777   /* space */
 778   strncat(args, " ", args_left);
 779   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 780
 781   /* name */
 782   strncat(args, trace_name, args_left);
 783   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 784
 785   int retval = execute_command(args, username, password, lttd_path);
 786
 787   if(retval) {
 788     gchar msg[256];
 789     guint msg_left = 256;
 790
 791     strcpy(msg, "A problem occured when executing the su command : ");
 792     msg_left = 256 - strlen(msg) - 1;
 793     strncat(msg, strerror(retval), msg_left);
 794     GtkWidget *dialogue =
 795       gtk_message_dialog_new(
 796         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 797         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 798         GTK_MESSAGE_ERROR,
 799         GTK_BUTTONS_OK,
 800         msg);
 801     gtk_dialog_run(GTK_DIALOG(dialogue));
 802     gtk_widget_destroy(dialogue);
 803   }
 804
 805 }
 806
 807
 808 void pause_clicked (GtkButton *button, gpointer user_data)
 809 {
 810   ControlData *tcd = (ControlData*)user_data;
 811
 812   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 813   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 814   const gchar *trace_name =
 815     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 816   const gchar *lttd_path = "";
 817
 818   const gchar *lttctl_path =
 819     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 820
 821   /* Setup arguments to su */
 822   /* child */
 823   gchar args[MAX_ARGS_LEN];
 824   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 825
 826   args[0] = '\0';
 827
 828   /* Command */
 829   strncat(args, "exec", args_left);
 830   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 831
 832   /* space */
 833   strncat(args, " ", args_left);
 834   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 835
 836   if(strcmp(lttctl_path, "") == 0)
 837     strncat(args, "lttctl", args_left);
 838   else
 839     strncat(args, lttctl_path, args_left);
 840   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 841
 842  /* space */
 843   strncat(args, " ", args_left);
 844   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 845
 846   /* Simply pause tracing */
 847   strncat(args, "-p", args_left);
 848   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 849
 850   /* space */
 851   strncat(args, " ", args_left);
 852   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 853
 854   /* name */
 855   strncat(args, trace_name, args_left);
 856   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 857
 858   int retval = execute_command(args, username, password, lttd_path);
 859   if(retval) {
 860     gchar msg[256];
 861     guint msg_left = 256;
 862
 863     strcpy(msg, "A problem occured when executing the su command : ");
 864     msg_left = 256 - strlen(msg) - 1;
 865     strncat(msg, strerror(retval), msg_left);
 866     GtkWidget *dialogue =
 867       gtk_message_dialog_new(
 868         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 869         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 870         GTK_MESSAGE_ERROR,
 871         GTK_BUTTONS_OK,
 872         msg);
 873     gtk_dialog_run(GTK_DIALOG(dialogue));
 874     gtk_widget_destroy(dialogue);
 875   }
 876
 877 }
 878
 879 void unpause_clicked (GtkButton *button, gpointer user_data)
 880 {
 881   ControlData *tcd = (ControlData*)user_data;
 882
 883   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 884   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 885   const gchar *trace_name =
 886     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 887   const gchar *lttd_path = "";
 888
 889   const gchar *lttctl_path =
 890     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 891
 892   /* Setup arguments to su */
 893   /* child */
 894   gchar args[MAX_ARGS_LEN];
 895   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 896
 897   args[0] = '\0';
 898
 899   /* Command */
 900   strncat(args, "exec", args_left);
 901   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 902
 903   /* space */
 904   strncat(args, " ", args_left);
 905   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 906
 907   if(strcmp(lttctl_path, "") == 0)
 908     strncat(args, "lttctl", args_left);
 909   else
 910     strncat(args, lttctl_path, args_left);
 911   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 912
 913   /* space */
 914   strncat(args, " ", args_left);
 915   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 916
 917   /* Simply unpause tracing */
 918   strncat(args, "-s", args_left);
 919   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 920
 921   /* space */
 922   strncat(args, " ", args_left);
 923   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 924
 925   /* name */
 926   strncat(args, trace_name, args_left);
 927   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 928
 929   int retval = execute_command(args, username, password, lttd_path);
 930   if(retval) {
 931     gchar msg[256];
 932     guint msg_left = 256;
 933
 934     strcpy(msg, "A problem occured when executing the su command : ");
 935     msg_left = 256 - strlen(msg) - 1;
 936     strncat(msg, strerror(retval), msg_left);
 937     GtkWidget *dialogue =
 938       gtk_message_dialog_new(
 939         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 940         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 941         GTK_MESSAGE_ERROR,
 942         GTK_BUTTONS_OK,
 943         msg);
 944     gtk_dialog_run(GTK_DIALOG(dialogue));
 945     gtk_widget_destroy(dialogue);
 946   }
 947
 948 }
 949
 950 void stop_clicked (GtkButton *button, gpointer user_data)
 951 {
 952   ControlData *tcd = (ControlData*)user_data;
 953
 954   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 955   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 956   const gchar *trace_name =
 957     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 958   const gchar *lttd_path = "";
 959   const gchar *trace_mode;
 960   const gchar *trace_mode_sel;
 961   GtkTreeIter iter;
 962
 963   gtk_combo_box_get_active_iter(GTK_COMBO_BOX(tcd->trace_mode_combo), &iter);
 964   gtk_tree_model_get(
 965       gtk_combo_box_get_model(GTK_COMBO_BOX(tcd->trace_mode_combo)),
 966       &iter, 0, &trace_mode_sel, -1);
 967   if(strcmp(trace_mode_sel, "normal") == 0)
 968     trace_mode = "normal";
 969   else
 970     trace_mode = "flight";
 971
 972   const gchar *lttctl_path =
 973     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 974   gchar *trace_dir = gtk_entry_get_text(GTK_ENTRY(tcd->trace_dir_entry));
 975   GSList * trace_list = NULL;
 976
 977   trace_list = g_slist_append(trace_list, trace_dir);
 978
 979   /* Setup arguments to su */
 980   /* child */
 981   gchar args[MAX_ARGS_LEN];
 982   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 983
 984   args[0] = '\0';
 985
 986   /* Command */
 987   strncat(args, "exec", args_left);
 988   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 989
 990   /* space */
 991   strncat(args, " ", args_left);
 992   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 993
 994   if(strcmp(lttctl_path, "") == 0)
 995     strncat(args, "lttctl", args_left);
 996   else
 997     strncat(args, lttctl_path, args_left);
 998   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 999
1000   /* space */
1001   strncat(args, " ", args_left);
1002   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1003
1004   /* Simply stop tracing and destroy channel */
1005   strncat(args, "-D", args_left);
1006   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1007
1008   if(strcmp(trace_mode, "flight") == 0) {
1009     /* space */
1010     strncat(args, " ", args_left);
1011     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1012
1013     /* trace dir */
1014     strncat(args, "-w ", args_left);
1015     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1016     strncat(args, trace_dir, args_left);
1017     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1018   }
1019
1020   /* space */
1021   strncat(args, " ", args_left);
1022   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1023
1024   /* name */
1025   strncat(args, trace_name, args_left);
1026   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1027
1028   int retval = execute_command(args, username, password, lttd_path);
1029   if(retval) {
1030     gchar msg[256];
1031     guint msg_left = 256;
1032
1033     strcpy(msg, "A problem occured when executing the su command : ");
1034     msg_left = 256 - strlen(msg) - 1;
1035     strncat(msg, strerror(retval), msg_left);
1036     GtkWidget *dialogue =
1037       gtk_message_dialog_new(
1038         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1039         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
1040         GTK_MESSAGE_ERROR,
1041         GTK_BUTTONS_OK,
1042         msg);
1043     gtk_dialog_run(GTK_DIALOG(dialogue));
1044     gtk_widget_destroy(dialogue);
1045     return;
1046   }
1047
1048
1049   /* Ask to the user if he wants to open the trace in a new window */
1050   GtkWidget *dialogue;
1051   GtkWidget *label;
1052   gint id;
1053
1054   dialogue = gtk_dialog_new_with_buttons("Open trace ?",
1055       GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1056       GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
1057       GTK_STOCK_YES,GTK_RESPONSE_ACCEPT,
1058       GTK_STOCK_NO,GTK_RESPONSE_REJECT,
1059       NULL);
1060   label = gtk_label_new("Do you want to open the trace in LTTV ?");
1061   gtk_widget_show(label);
1062
1063   gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialogue)->vbox),
1064       label);
1065
1066   id = gtk_dialog_run(GTK_DIALOG(dialogue));
1067
1068   switch(id){
1069     case GTK_RESPONSE_ACCEPT:
1070       {
1071         create_main_window_with_trace_list(trace_list);
1072       }
1073       break;
1074     case GTK_RESPONSE_REJECT:
1075     default:
1076       break;
1077   }
1078   gtk_widget_destroy(dialogue);
1079   g_slist_free(trace_list);
1080 }
1081
1082
1083 /**
1084  *  @fn GtkWidget* h_guicontrol(Tab*)
1085  *
1086  *  Control Module's constructor hook
1087  *
1088  *  This constructor is given as a parameter to the menuitem and toolbar button
1089  *  registration. It creates the list.
1090  *  @param tab A pointer to the parent window.
1091  *  @return The widget created.
1092  */
1093 GtkWidget *
1094 h_guicontrol(LttvPlugin *plugin)
1095 {
1096   LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin);
1097   ControlData* f = gui_control(ptab);
1098
1099   return NULL;
1100 }
1101
1102 /**
1103  *  @fn static void init()
1104  *
1105  *  This function initializes the Filter Viewer functionnality through the
1106  *  gtkTraceSet API.
1107  */
1108 static void init() {
1109
1110   lttvwindow_register_constructor("guicontrol",
1111                                   "/",
1112                                   "Insert Tracing Control Module",
1113                                   hTraceControlInsert_xpm,
1114                                   "Insert Tracing Control Module",
1115                                   h_guicontrol);
1116 }
1117
1118 /**
1119  *  @fn void control_destroy_walk(gpointer,gpointer)
1120  *
1121  *  Initiate the destruction of the current gui module
1122  *  on the GTK Interface
1123  */
1124 void
1125 control_destroy_walk(gpointer data, gpointer user_data)
1126 {
1127   ControlData *tcd = (ControlData*)data;
1128
1129   g_debug("traceontrol.c : control_destroy_walk, %p", tcd);
1130
1131   /* May already have been done by GTK window closing */
1132   if(GTK_IS_WIDGET(guicontrol_get_widget(tcd)))
1133     gtk_widget_destroy(guicontrol_get_widget(tcd));
1134 }
1135
1136 /**
1137  *  @fn static void destroy()
1138  *  @brief plugin's destroy function
1139  *
1140  *  This function releases the memory reserved by the module and unregisters
1141  *  everything that has been registered in the gtkTraceSet API.
1142  */
1143 static void destroy() {
1144
1145   g_slist_foreach(g_control_list, control_destroy_walk, NULL );
1146
1147   lttvwindow_unregister_constructor(h_guicontrol);
1148
1149 }
1150
1151
1152 LTTV_MODULE("guitracecontrol", "Trace Control Window", \
1153     "Graphical module that let user control kernel tracing", \
1154     init, destroy, "lttvwindow")
1155