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 arm_clicked (GtkButton *button, gpointer user_data);
  83 static void disarm_clicked (GtkButton *button, gpointer user_data);
  84 static void start_clicked (GtkButton *button, gpointer user_data);
  85 static void pause_clicked (GtkButton *button, gpointer user_data);
  86 static void unpause_clicked (GtkButton *button, gpointer user_data);
  87 static void stop_clicked (GtkButton *button, gpointer user_data);
  88
  89
  90 /**
  91  *  @struct _ControlData
  92  *
  93  *  @brief Main structure of gui control
  94  */
  95 struct _ControlData {
  96   Tab *tab;                             /**< current tab of module */
  97
  98   GtkWidget *window;                  /**< window */
  99
 100   GtkWidget *main_box;                /**< main container */
 101   GtkWidget *ltt_armall_button;
 102   GtkWidget *ltt_disarmall_button;
 103   GtkWidget *start_button;
 104   GtkWidget *pause_button;
 105   GtkWidget *unpause_button;
 106   GtkWidget *stop_button;
 107   GtkWidget *username_label;
 108   GtkWidget *username_entry;
 109   GtkWidget *password_label;
 110   GtkWidget *password_entry;
 111   GtkWidget *channel_dir_label;
 112   GtkWidget *channel_dir_entry;
 113   GtkWidget *trace_dir_label;
 114   GtkWidget *trace_dir_entry;
 115   GtkWidget *trace_name_label;
 116   GtkWidget *trace_name_entry;
 117   GtkWidget *trace_mode_label;
 118   GtkWidget *trace_mode_combo;
 119   GtkWidget *start_daemon_label;
 120   GtkWidget *start_daemon_check;
 121   GtkWidget *append_label;
 122   GtkWidget *append_check;
 123   GtkWidget *optional_label;
 124   GtkWidget *subbuf_size_label;
 125   GtkWidget *subbuf_size_entry;
 126   GtkWidget *subbuf_num_label;
 127   GtkWidget *subbuf_num_entry;
 128   GtkWidget *lttd_threads_label;
 129   GtkWidget *lttd_threads_entry;
 130   GtkWidget *lttctl_path_label;
 131   GtkWidget *lttctl_path_entry;
 132   GtkWidget *lttd_path_label;
 133   GtkWidget *lttd_path_entry;
 134   GtkWidget *ltt_armall_path_label;
 135   GtkWidget *ltt_armall_path_entry;
 136   GtkWidget *ltt_disarmall_path_label;
 137   GtkWidget *ltt_disarmall_path_entry;
 138 };
 139
 140 /**
 141  *  @fn GtkWidget* guicontrol_get_widget(ControlData*)
 142  *
 143  *  This function returns the current main widget
 144  *  used by this module
 145  *  @param tcd the module struct
 146  *  @return The main widget
 147  */
 148 GtkWidget*
 149 guicontrol_get_widget(ControlData *tcd)
 150 {
 151   return tcd->window;
 152 }
 153
 154 /**
 155  *  @fn ControlData* gui_control(Tab*)
 156  *
 157  *  Constructor is used to create ControlData data structure.
 158  *  @param tab The tab structure used by the widget
 159  *  @return The Filter viewer data created.
 160  */
 161 ControlData*
 162 gui_control(LttvPluginTab *ptab)
 163 {
 164   Tab *tab = ptab->tab;
 165   g_debug("filter::gui_control()");
 166
 167   unsigned i;
 168   GtkCellRenderer *renderer;
 169   GtkTreeViewColumn *column;
 170
 171   ControlData* tcd = g_new(ControlData,1);
 172
 173   tcd->tab  = tab;
 174
 175   tcd->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 176   gtk_window_set_title(GTK_WINDOW(tcd->window), "LTTng Trace Control");
 177   /*
 178    * Initiating GtkTable layout
 179    * starts with 2 rows and 5 columns and
 180    * expands when expressions added
 181    */
 182   tcd->main_box = gtk_table_new(14,7,FALSE);
 183   gtk_table_set_row_spacings(GTK_TABLE(tcd->main_box),5);
 184   gtk_table_set_col_spacings(GTK_TABLE(tcd->main_box),5);
 185
 186   gtk_container_add(GTK_CONTAINER(tcd->window), GTK_WIDGET(tcd->main_box));
 187
 188   GList *focus_chain = NULL;
 189
 190   /*
 191    * start/pause/stop buttons
 192    */
 193
 194   GdkPixbuf *pixbuf;
 195   GtkWidget *image;
 196   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStart_xpm);
 197   image = gtk_image_new_from_pixbuf(pixbuf);
 198   tcd->ltt_armall_button = gtk_button_new_with_label("Arm LTTng kernel probes");
 199   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->ltt_armall_button), image);
 200   g_object_set(G_OBJECT(tcd->ltt_armall_button), "image", image, NULL);
 201   gtk_button_set_alignment(GTK_BUTTON(tcd->ltt_armall_button), 0.0, 0.0);
 202   gtk_widget_show (tcd->ltt_armall_button);
 203   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_armall_button,6,7,0,1,GTK_FILL,GTK_FILL,2,2);
 204
 205   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStop_xpm);
 206   image = gtk_image_new_from_pixbuf(pixbuf);
 207   tcd->ltt_disarmall_button = gtk_button_new_with_label("Disarm LTTng kernel probes");
 208   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->ltt_disarmall_button), image);
 209   g_object_set(G_OBJECT(tcd->ltt_disarmall_button), "image", image, NULL);
 210   gtk_button_set_alignment(GTK_BUTTON(tcd->ltt_disarmall_button), 0.0, 0.0);
 211   gtk_widget_show (tcd->ltt_disarmall_button);
 212   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_disarmall_button,6,7,1,2,GTK_FILL,GTK_FILL,2,2);
 213
 214   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStart_xpm);
 215   image = gtk_image_new_from_pixbuf(pixbuf);
 216   tcd->start_button = gtk_button_new_with_label("start");
 217   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->start_button), image);
 218   g_object_set(G_OBJECT(tcd->start_button), "image", image, NULL);
 219   gtk_button_set_alignment(GTK_BUTTON(tcd->start_button), 0.0, 0.0);
 220   gtk_widget_show (tcd->start_button);
 221   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_button,6,7,2,3,GTK_FILL,GTK_FILL,2,2);
 222
 223   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlPause_xpm);
 224   image = gtk_image_new_from_pixbuf(pixbuf);
 225   tcd->pause_button = gtk_button_new_with_label("pause");
 226   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->pause_button), image);
 227   g_object_set(G_OBJECT(tcd->pause_button), "image", image, NULL);
 228   gtk_button_set_alignment(GTK_BUTTON(tcd->pause_button), 0.0, 0.0);
 229   gtk_widget_show (tcd->pause_button);
 230   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->pause_button,6,7,3,4,GTK_FILL,GTK_FILL,2,2);
 231
 232   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlPause_xpm);
 233   image = gtk_image_new_from_pixbuf(pixbuf);
 234   tcd->unpause_button = gtk_button_new_with_label("unpause");
 235   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->unpause_button), image);
 236   g_object_set(G_OBJECT(tcd->unpause_button), "image", image, NULL);
 237   gtk_button_set_alignment(GTK_BUTTON(tcd->unpause_button), 0.0, 0.0);
 238   gtk_widget_show (tcd->unpause_button);
 239   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->unpause_button,6,7,4,5,GTK_FILL,GTK_FILL,2,2);
 240
 241   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStop_xpm);
 242   image = gtk_image_new_from_pixbuf(pixbuf);
 243   tcd->stop_button = gtk_button_new_with_label("stop");
 244   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->stop_button), image);
 245   g_object_set(G_OBJECT(tcd->stop_button), "image", image, NULL);
 246   gtk_button_set_alignment(GTK_BUTTON(tcd->stop_button), 0.0, 0.0);
 247   gtk_widget_show (tcd->stop_button);
 248   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->stop_button,6,7,5,6,GTK_FILL,GTK_FILL,2,2);
 249
 250   /*
 251    *  First half of the filter window
 252    *  - textual entry of filter expression
 253    *  - processing button
 254    */
 255   tcd->username_label = gtk_label_new("Username:");
 256   gtk_widget_show (tcd->username_label);
 257   tcd->username_entry = gtk_entry_new();
 258   gtk_entry_set_text(GTK_ENTRY(tcd->username_entry),"root");
 259   gtk_widget_show (tcd->username_entry);
 260   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->username_label,0,2,0,1,GTK_FILL,GTK_FILL,2,2);
 261   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);
 262
 263
 264
 265   tcd->password_label = gtk_label_new("Password:");
 266   gtk_widget_show (tcd->password_label);
 267   tcd->password_entry = gtk_entry_new();
 268   gtk_entry_set_visibility(GTK_ENTRY(tcd->password_entry), FALSE);
 269   gtk_widget_show (tcd->password_entry);
 270   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->password_label,0,2,1,2,GTK_FILL,GTK_FILL,2,2);
 271   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);
 272
 273
 274   tcd->channel_dir_label = gtk_label_new("Channel directory:");
 275   gtk_widget_show (tcd->channel_dir_label);
 276   tcd->channel_dir_entry = gtk_entry_new();
 277   gtk_entry_set_text(GTK_ENTRY(tcd->channel_dir_entry),"/mnt/debugfs/ltt");
 278   gtk_widget_show (tcd->channel_dir_entry);
 279   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->channel_dir_label,0,2,2,3,GTK_FILL,GTK_FILL,2,2);
 280   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);
 281
 282   tcd->trace_dir_label = gtk_label_new("Trace directory:");
 283   gtk_widget_show (tcd->trace_dir_label);
 284   tcd->trace_dir_entry = gtk_entry_new();
 285   gtk_entry_set_text(GTK_ENTRY(tcd->trace_dir_entry),"/tmp/trace1");
 286   gtk_widget_show (tcd->trace_dir_entry);
 287   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_dir_label,0,2,3,4,GTK_FILL,GTK_FILL,2,2);
 288   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);
 289
 290   tcd->trace_name_label = gtk_label_new("Trace name:");
 291   gtk_widget_show (tcd->trace_name_label);
 292   tcd->trace_name_entry = gtk_entry_new();
 293   gtk_entry_set_text(GTK_ENTRY(tcd->trace_name_entry),"trace");
 294   gtk_widget_show (tcd->trace_name_entry);
 295   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_name_label,0,2,4,5,GTK_FILL,GTK_FILL,2,2);
 296   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);
 297
 298   tcd->trace_mode_label = gtk_label_new("Trace mode ");
 299   gtk_widget_show (tcd->trace_mode_label);
 300   tcd->trace_mode_combo = gtk_combo_box_new_text();
 301   gtk_combo_box_append_text(GTK_COMBO_BOX(tcd->trace_mode_combo),
 302       "normal");
 303   gtk_combo_box_append_text(GTK_COMBO_BOX(tcd->trace_mode_combo),
 304       "flight recorder");
 305   gtk_combo_box_set_active(GTK_COMBO_BOX(tcd->trace_mode_combo), 0);
 306   gtk_widget_show (tcd->trace_mode_combo);
 307   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_mode_label,0,2,5,6,GTK_FILL,GTK_FILL,2,2);
 308   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);
 309
 310   tcd->start_daemon_label = gtk_label_new("Start daemon ");
 311   gtk_widget_show (tcd->start_daemon_label);
 312   tcd->start_daemon_check = gtk_check_button_new();
 313   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tcd->start_daemon_check), TRUE);
 314   gtk_widget_show (tcd->start_daemon_check);
 315   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_daemon_label,0,2,6,7,GTK_FILL,GTK_FILL,2,2);
 316   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_daemon_check,2,6,6,7,GTK_FILL,GTK_FILL,0,0);
 317
 318   tcd->append_label = gtk_label_new("Append to trace ");
 319   gtk_widget_show (tcd->append_label);
 320   tcd->append_check = gtk_check_button_new();
 321   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tcd->append_check), FALSE);
 322   gtk_widget_show (tcd->append_check);
 323   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->append_label,0,2,7,8,GTK_FILL,GTK_FILL,2,2);
 324   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->append_check,2,6,7,8,GTK_FILL,GTK_FILL,0,0);
 325
 326
 327   tcd->optional_label = gtk_label_new("Optional fields ");
 328   gtk_widget_show (tcd->optional_label);
 329   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->optional_label,0,6,8,9,GTK_FILL,GTK_FILL,2,2);
 330
 331   tcd->subbuf_size_label = gtk_label_new("Subbuffer size:");
 332   gtk_widget_show (tcd->subbuf_size_label);
 333   tcd->subbuf_size_entry = gtk_entry_new();
 334   gtk_widget_show (tcd->subbuf_size_entry);
 335   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_size_label,0,2,9,10,GTK_FILL,GTK_FILL,2,2);
 336   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);
 337
 338   tcd->subbuf_num_label = gtk_label_new("Number of subbuffers:");
 339   gtk_widget_show (tcd->subbuf_num_label);
 340   tcd->subbuf_num_entry = gtk_entry_new();
 341   gtk_widget_show (tcd->subbuf_num_entry);
 342   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_num_label,0,2,10,11,GTK_FILL,GTK_FILL,2,2);
 343   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);
 344
 345   tcd->lttd_threads_label = gtk_label_new("Number of lttd threads:");
 346   gtk_widget_show (tcd->lttd_threads_label);
 347   tcd->lttd_threads_entry = gtk_entry_new();
 348   gtk_entry_set_text(GTK_ENTRY(tcd->lttd_threads_entry), "1");
 349   gtk_widget_show (tcd->lttd_threads_entry);
 350   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_threads_label,0,2,11,12,GTK_FILL,GTK_FILL,2,2);
 351   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);
 352
 353   tcd->lttctl_path_label = gtk_label_new("path to lttctl:");
 354   gtk_widget_show (tcd->lttctl_path_label);
 355   tcd->lttctl_path_entry = gtk_entry_new();
 356   gtk_entry_set_text(GTK_ENTRY(tcd->lttctl_path_entry),PACKAGE_BIN_DIR "/lttctl");
 357   gtk_widget_show (tcd->lttctl_path_entry);
 358   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttctl_path_label,0,2,12,13,GTK_FILL,GTK_FILL,2,2);
 359   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);
 360
 361
 362   tcd->lttd_path_label = gtk_label_new("path to lttd:");
 363   gtk_widget_show (tcd->lttd_path_label);
 364   tcd->lttd_path_entry = gtk_entry_new();
 365   gtk_entry_set_text(GTK_ENTRY(tcd->lttd_path_entry),PACKAGE_BIN_DIR "/lttd");
 366   gtk_widget_show (tcd->lttd_path_entry);
 367   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_path_label,0,2,13,14,GTK_FILL,GTK_FILL,2,2);
 368   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);
 369
 370   tcd->ltt_armall_path_label = gtk_label_new("path to ltt_armall:");
 371   gtk_widget_show (tcd->ltt_armall_path_label);
 372   tcd->ltt_armall_path_entry = gtk_entry_new();
 373   gtk_entry_set_text(GTK_ENTRY(tcd->ltt_armall_path_entry),PACKAGE_BIN_DIR "/ltt-armall");
 374   gtk_widget_show (tcd->ltt_armall_path_entry);
 375   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_armall_path_label,0,2,14,15,GTK_FILL,GTK_FILL,2,2);
 376   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_armall_path_entry,2,6,14,15,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 377
 378   tcd->ltt_disarmall_path_label = gtk_label_new("path to ltt_disarmall:");
 379   gtk_widget_show (tcd->ltt_disarmall_path_label);
 380   tcd->ltt_disarmall_path_entry = gtk_entry_new();
 381   gtk_entry_set_text(GTK_ENTRY(tcd->ltt_disarmall_path_entry),PACKAGE_BIN_DIR "/ltt-disarmall");
 382   gtk_widget_show (tcd->ltt_disarmall_path_entry);
 383   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_disarmall_path_label,0,2,15,16,GTK_FILL,GTK_FILL,2,2);
 384   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_disarmall_path_entry,2,6,15,16,GTK_FILL|GTK_EXPAND|GTK_SHRINK,GTK_FILL,0,0);
 385
 386   focus_chain = g_list_append (focus_chain, tcd->username_entry);
 387   focus_chain = g_list_append (focus_chain, tcd->password_entry);
 388   focus_chain = g_list_append (focus_chain, tcd->ltt_armall_path_entry);
 389   focus_chain = g_list_append (focus_chain, tcd->ltt_disarmall_path_entry);
 390   focus_chain = g_list_append (focus_chain, tcd->start_button);
 391   focus_chain = g_list_append (focus_chain, tcd->pause_button);
 392   focus_chain = g_list_append (focus_chain, tcd->unpause_button);
 393   focus_chain = g_list_append (focus_chain, tcd->stop_button);
 394   focus_chain = g_list_append (focus_chain, tcd->channel_dir_entry);
 395   focus_chain = g_list_append (focus_chain, tcd->trace_dir_entry);
 396   focus_chain = g_list_append (focus_chain, tcd->trace_name_entry);
 397   focus_chain = g_list_append (focus_chain, tcd->trace_mode_combo);
 398   focus_chain = g_list_append (focus_chain, tcd->start_daemon_check);
 399   focus_chain = g_list_append (focus_chain, tcd->append_check);
 400   focus_chain = g_list_append (focus_chain, tcd->subbuf_size_entry);
 401   focus_chain = g_list_append (focus_chain, tcd->subbuf_num_entry);
 402   focus_chain = g_list_append (focus_chain, tcd->lttd_threads_entry);
 403   focus_chain = g_list_append (focus_chain, tcd->lttctl_path_entry);
 404   focus_chain = g_list_append (focus_chain, tcd->lttd_path_entry);
 405
 406   gtk_container_set_focus_chain(GTK_CONTAINER(tcd->main_box), focus_chain);
 407
 408   g_list_free(focus_chain);
 409
 410   g_signal_connect(G_OBJECT(tcd->start_button), "clicked",
 411       (GCallback)start_clicked, tcd);
 412   g_signal_connect(G_OBJECT(tcd->pause_button), "clicked",
 413       (GCallback)pause_clicked, tcd);
 414   g_signal_connect(G_OBJECT(tcd->unpause_button), "clicked",
 415       (GCallback)unpause_clicked, tcd);
 416   g_signal_connect(G_OBJECT(tcd->stop_button), "clicked",
 417       (GCallback)stop_clicked, tcd);
 418   g_signal_connect(G_OBJECT(tcd->ltt_armall_button), "clicked",
 419       (GCallback)arm_clicked, tcd);
 420   g_signal_connect(G_OBJECT(tcd->ltt_disarmall_button), "clicked",
 421       (GCallback)disarm_clicked, tcd);
 422
 423   /*
 424    * show main container
 425    */
 426   gtk_widget_show(tcd->main_box);
 427   gtk_widget_show(tcd->window);
 428
 429
 430   g_object_set_data_full(
 431       G_OBJECT(guicontrol_get_widget(tcd)),
 432       "control_viewer_data",
 433       tcd,
 434       (GDestroyNotify)gui_control_destructor);
 435
 436   g_control_list = g_slist_append(
 437       g_control_list,
 438       tcd);
 439
 440   return tcd;
 441 }
 442
 443
 444 /**
 445  *  @fn void gui_control_destructor(ControlData*)
 446  *
 447  *  Destructor for the filter gui module
 448  *  @param tcd The module structure
 449  */
 450 void
 451 gui_control_destructor(ControlData *tcd)
 452 {
 453   Tab *tab = tcd->tab;
 454
 455   /* May already been done by GTK window closing */
 456   if(GTK_IS_WIDGET(guicontrol_get_widget(tcd))){
 457     g_info("widget still exists");
 458   }
 459 //  if(tab != NULL) {
 460 //    lttvwindow_unregister_traceset_notify(tcd->tab,
 461 //                                          filter_traceset_changed,
 462 //                                          filter_viewer_data);
 463 //  }
 464   lttvwindowtraces_background_notify_remove(tcd);
 465
 466   g_control_list = g_slist_remove(g_control_list, tcd);
 467
 468   g_free(tcd);
 469 }
 470
 471 static int execute_command(const gchar *command, const gchar *username,
 472     const gchar *password, const gchar *lttd_path)
 473 {
 474   pid_t pid;
 475   int fdpty;
 476   pid = forkpty(&fdpty, NULL, NULL, NULL);
 477   int retval = 0;
 478
 479   if(pid > 0) {
 480     /* parent */
 481     gchar buf[256];
 482     int status;
 483     ssize_t count;
 484     /* discuss with su */
 485     struct timeval timeout;
 486     timeout.tv_sec = 1;
 487     timeout.tv_usec = 0;
 488
 489     struct pollfd pollfd;
 490     int num_rdy;
 491     int num_hup = 0;
 492                 enum read_state { GET_LINE, GET_SEMI, GET_SPACE } read_state = GET_LINE;
 493
 494                 retval = fcntl(fdpty, F_SETFL, O_WRONLY);
 495                 if(retval == -1) {
 496                         perror("Error in fcntl");
 497                         goto wait_child;
 498                 }
 499
 500     /* Read the output from the child terminal before the prompt. If no data in
 501      * 200 ms, we stop reading to give the password */
 502     g_info("Reading from child console...");
 503     while(1) {
 504       pollfd.fd = fdpty;
 505       pollfd.events = POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL;
 506
 507       num_rdy = poll(&pollfd, 1, -1);
 508       if(num_rdy == -1) {
 509         perror("Poll error");
 510         goto wait_child;
 511       }
 512
 513       /* Timeout : Stop waiting for chars */
 514       if(num_rdy == 0) goto wait_child;
 515
 516       /* Check for fatal errors */
 517       if(pollfd.revents & POLLERR) {
 518           g_warning("Error returned in polling fd\n");
 519           num_hup++;
 520       }
 521       if(pollfd.revents & POLLNVAL) {
 522         g_warning("Polling fd tells it is not open");
 523         num_hup++;
 524       }
 525
 526       if(pollfd.revents & POLLHUP) {
 527
 528         g_info("Polling FD : hung up.");
 529         num_hup++;
 530
 531       }
 532
 533       if(pollfd.revents & (POLLIN | POLLPRI)) {
 534         int count;
 535         count = read (fdpty, buf, 256);
 536         if(count > 0) {
 537           unsigned int i;
 538           buf[count] = '\0';
 539           g_printf("%s", buf);
 540           for(i=0; i<count; i++) {
 541             switch(read_state) {
 542             case GET_LINE:
 543               if(buf[i] == '\n') {
 544                 read_state = GET_SEMI;
 545                 g_debug("Tracecontrol input line skip\n");
 546               }
 547               break;
 548             case GET_SEMI:
 549               if(buf[i] == ':') {
 550                 g_debug("Tracecontrol input  : marker found\n");
 551                 read_state = GET_SPACE;
 552               }
 553               break;
 554             case GET_SPACE:
 555               if(buf[i] == ' ') {
 556                 g_debug("Tracecontrol input space marker found\n");
 557                 goto write_password;
 558               }
 559               break;
 560             }
 561           }
 562         } else if(count == -1) {
 563           perror("Error in read");
 564           goto wait_child;
 565         }
 566
 567       }
 568
 569       if(num_hup > 0) {
 570         g_warning("Child hung up without returning a full reply");
 571         goto wait_child;
 572       }
 573     }
 574 write_password:
 575                 fsync(fdpty);
 576                 pollfd.fd = fdpty;
 577                 pollfd.events = POLLOUT|POLLERR|POLLHUP|POLLNVAL;
 578
 579                 num_rdy = poll(&pollfd, 1, -1);
 580                 if(num_rdy == -1) {
 581                         perror("Poll error");
 582                         goto wait_child;
 583                 }
 584
 585     /* Write the password */
 586     g_info("Got su prompt, now writing password...");
 587     int ret;
 588                 sleep(1);
 589     ret = write(fdpty, password, strlen(password));
 590     if(ret < 0) perror("Error in write");
 591     ret = write(fdpty, "\n", 1);
 592     if(ret < 0) perror("Error in write");
 593     fsync(fdpty);
 594     /* Take the output from the terminal and show it on the real console */
 595     g_info("Getting data from child terminal...");
 596     while(1) {
 597       int num_hup = 0;
 598       pollfd.fd = fdpty;
 599       pollfd.events = POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL;
 600
 601       num_rdy = poll(&pollfd, 1, -1);
 602       if(num_rdy == -1) {
 603         perror("Poll error");
 604         goto wait_child;
 605       }
 606       if(num_rdy == 0) break;
 607
 608                         if(pollfd.revents & (POLLERR|POLLNVAL)) {
 609                                 g_warning("Error returned in polling fd\n");
 610                                 num_hup++;
 611                         }
 612
 613                         if(pollfd.revents & (POLLIN|POLLPRI) ) {
 614                                 count = read (fdpty, buf, 256);
 615                                 if(count > 0) {
 616                                         buf[count] = '\0';
 617                                         printf("%s", buf);
 618                                 } else if(count == -1) {
 619                                         perror("Error in read");
 620                                         goto wait_child;
 621                                 }
 622                         }
 623
 624                         if(pollfd.revents & POLLHUP) {
 625         g_info("Polling FD : hung up.");
 626         num_hup++;
 627                         }
 628
 629       if(num_hup > 0) goto wait_child;
 630     }
 631 wait_child:
 632     g_info("Waiting for child exit...");
 633
 634     ret = waitpid(pid, &status, 0);
 635
 636     if(ret == -1) {
 637       g_warning("An error occured in wait : %s",
 638           strerror(errno));
 639     } else {
 640       if(WIFEXITED(status))
 641         if(WEXITSTATUS(status) != 0) {
 642           retval = WEXITSTATUS(status);
 643           g_warning("An error occured in the su command : %s",
 644               strerror(retval));
 645         }
 646     }
 647
 648     g_info("Child exited.");
 649
 650   } else if(pid == 0) {
 651     /* Setup environment variables */
 652     if(strcmp(lttd_path, "") != 0)
 653       setenv("LTT_DAEMON", lttd_path, 1);
 654
 655                 /* One comment line (must be only one) */
 656     g_printf("Executing (as %s) : %s\n", username, command);
 657
 658     execlp("su", "su", "-p", "-c", command, username, NULL);
 659     exit(-1); /* not supposed to happen! */
 660
 661     //gint ret = execvp();
 662
 663   } else {
 664     /* error */
 665     g_warning("Error happened when forking for su");
 666   }
 667
 668   return retval;
 669 }
 670
 671
 672 /* Callbacks */
 673
 674 void start_clicked (GtkButton *button, gpointer user_data)
 675 {
 676   ControlData *tcd = (ControlData*)user_data;
 677
 678   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 679   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 680   const gchar *channel_dir =
 681     gtk_entry_get_text(GTK_ENTRY(tcd->channel_dir_entry));
 682   const gchar *trace_dir = gtk_entry_get_text(GTK_ENTRY(tcd->trace_dir_entry));
 683   const gchar *trace_name =
 684     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 685
 686   const gchar *trace_mode_sel;
 687   GtkTreeIter iter;
 688
 689   gtk_combo_box_get_active_iter(GTK_COMBO_BOX(tcd->trace_mode_combo), &iter);
 690   gtk_tree_model_get(
 691       gtk_combo_box_get_model(GTK_COMBO_BOX(tcd->trace_mode_combo)),
 692       &iter, 0, &trace_mode_sel, -1);
 693   //const gchar *trace_mode_sel =
 694     //2.6+ gtk_combo_box_get_active_text(GTK_COMBO_BOX(tcd->trace_mode_combo));
 695   const gchar *trace_mode;
 696   if(strcmp(trace_mode_sel, "normal") == 0)
 697     trace_mode = "normal";
 698   else
 699     trace_mode = "flight";
 700
 701   gboolean start_daemon =
 702     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tcd->start_daemon_check));
 703
 704   gboolean append =
 705     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tcd->append_check));
 706
 707   const gchar *subbuf_size =
 708     gtk_entry_get_text(GTK_ENTRY(tcd->subbuf_size_entry));
 709   const gchar *subbuf_num =
 710     gtk_entry_get_text(GTK_ENTRY(tcd->subbuf_num_entry));
 711         const gchar *threads_num =
 712     gtk_entry_get_text(GTK_ENTRY(tcd->lttd_threads_entry));
 713   const gchar *lttctl_path =
 714     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 715   const gchar *lttd_path = gtk_entry_get_text(GTK_ENTRY(tcd->lttd_path_entry));
 716
 717   /* Setup arguments to su */
 718   /* child */
 719   gchar args[MAX_ARGS_LEN];
 720   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 721
 722   args[0] = '\0';
 723
 724   /* Command */
 725   strncat(args, "exec", args_left);
 726   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 727
 728   /* space */
 729   strncat(args, " ", args_left);
 730   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 731
 732   if(strcmp(lttctl_path, "") == 0)
 733     strncat(args, "lttctl", args_left);
 734   else
 735     strncat(args, lttctl_path, args_left);
 736   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 737
 738   /* space */
 739   strncat(args, " ", args_left);
 740   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 741
 742   /* Start daemon ? */
 743   if(start_daemon) {
 744     strncat(args, "-C", args_left);
 745     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 746   } else {
 747     /* Simply create the channel and then start tracing */
 748     //strncat(args, "-b", args_left);
 749     //args_left = MAX_ARGS_LEN - strlen(args) - 1;
 750   }
 751
 752   /* space */
 753   strncat(args, " ", args_left);
 754   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 755
 756   /* channel dir */
 757   strncat(args, "--channel_root ", args_left);
 758   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 759   strncat(args, channel_dir, args_left);
 760   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 761
 762   /* space */
 763   strncat(args, " ", args_left);
 764   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 765
 766   /* trace dir */
 767   strncat(args, "-w ", args_left);
 768   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 769   strncat(args, trace_dir, args_left);
 770   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 771
 772   /* space */
 773   strncat(args, " ", args_left);
 774   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 775
 776   if(strcmp(trace_mode, "flight") == 0) {
 777     strncat(args, "-o channel.all.overwrite=1", args_left);
 778     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 779   } else {
 780     strncat(args, "-o channel.all.overwrite=0", args_left);
 781     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 782   }
 783
 784   /* Append to trace ? */
 785   if(append) {
 786     /* space */
 787     strncat(args, " ", args_left);
 788     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 789     strncat(args, "-a", args_left);
 790     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 791   }
 792
 793   /* optional arguments */
 794   /* subbuffer size */
 795   if(strcmp(subbuf_size, "") != 0) {
 796     /* space */
 797     strncat(args, " ", args_left);
 798     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 799
 800     strncat(args, "-o channel.all.bufsize=", args_left);
 801     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 802     strncat(args, subbuf_size, args_left);
 803     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 804   }
 805
 806   /* number of subbuffers */
 807   if(strcmp(subbuf_num, "") != 0) {
 808     /* space */
 809     strncat(args, " ", args_left);
 810     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 811
 812     strncat(args, "-o channel.all.bufnum=", args_left);
 813     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 814     strncat(args, subbuf_num, args_left);
 815     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 816   }
 817
 818   /* number of lttd threads */
 819   if(strcmp(threads_num, "") != 0) {
 820     /* space */
 821     strncat(args, " ", args_left);
 822     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 823
 824     strncat(args, "-n ", args_left);
 825     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 826     strncat(args, threads_num, args_left);
 827     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 828   }
 829
 830   /* space */
 831   strncat(args, " ", args_left);
 832   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 833
 834   /* name */
 835   strncat(args, trace_name, args_left);
 836   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 837
 838   int retval = execute_command(args, username, password, lttd_path);
 839
 840   if(retval) {
 841     gchar msg[256];
 842     guint msg_left = 256;
 843
 844     strcpy(msg, "A problem occured when executing the su command : ");
 845     msg_left = 256 - strlen(msg) - 1;
 846     strncat(msg, strerror(retval), msg_left);
 847     GtkWidget *dialogue =
 848       gtk_message_dialog_new(
 849         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 850         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 851         GTK_MESSAGE_ERROR,
 852         GTK_BUTTONS_OK,
 853         msg);
 854     gtk_dialog_run(GTK_DIALOG(dialogue));
 855     gtk_widget_destroy(dialogue);
 856   }
 857
 858 }
 859
 860
 861 void pause_clicked (GtkButton *button, gpointer user_data)
 862 {
 863   ControlData *tcd = (ControlData*)user_data;
 864
 865   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 866   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 867   const gchar *trace_name =
 868     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 869   const gchar *lttd_path = "";
 870
 871   const gchar *lttctl_path =
 872     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 873
 874   /* Setup arguments to su */
 875   /* child */
 876   gchar args[MAX_ARGS_LEN];
 877   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 878
 879   args[0] = '\0';
 880
 881   /* Command */
 882   strncat(args, "exec", args_left);
 883   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 884
 885   /* space */
 886   strncat(args, " ", args_left);
 887   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 888
 889   if(strcmp(lttctl_path, "") == 0)
 890     strncat(args, "lttctl", args_left);
 891   else
 892     strncat(args, lttctl_path, args_left);
 893   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 894
 895  /* space */
 896   strncat(args, " ", args_left);
 897   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 898
 899   /* Simply pause tracing */
 900   strncat(args, "-p", 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   /* name */
 908   strncat(args, trace_name, args_left);
 909   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 910
 911   int retval = execute_command(args, username, password, lttd_path);
 912   if(retval) {
 913     gchar msg[256];
 914     guint msg_left = 256;
 915
 916     strcpy(msg, "A problem occured when executing the su command : ");
 917     msg_left = 256 - strlen(msg) - 1;
 918     strncat(msg, strerror(retval), msg_left);
 919     GtkWidget *dialogue =
 920       gtk_message_dialog_new(
 921         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 922         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 923         GTK_MESSAGE_ERROR,
 924         GTK_BUTTONS_OK,
 925         msg);
 926     gtk_dialog_run(GTK_DIALOG(dialogue));
 927     gtk_widget_destroy(dialogue);
 928   }
 929
 930 }
 931
 932 void unpause_clicked (GtkButton *button, gpointer user_data)
 933 {
 934   ControlData *tcd = (ControlData*)user_data;
 935
 936   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 937   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 938   const gchar *trace_name =
 939     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 940   const gchar *lttd_path = "";
 941
 942   const gchar *lttctl_path =
 943     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 944
 945   /* Setup arguments to su */
 946   /* child */
 947   gchar args[MAX_ARGS_LEN];
 948   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 949
 950   args[0] = '\0';
 951
 952   /* Command */
 953   strncat(args, "exec", args_left);
 954   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 955
 956   /* space */
 957   strncat(args, " ", args_left);
 958   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 959
 960   if(strcmp(lttctl_path, "") == 0)
 961     strncat(args, "lttctl", args_left);
 962   else
 963     strncat(args, lttctl_path, args_left);
 964   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 965
 966   /* space */
 967   strncat(args, " ", args_left);
 968   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 969
 970   /* Simply unpause tracing */
 971   strncat(args, "-s", args_left);
 972   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 973
 974   /* space */
 975   strncat(args, " ", args_left);
 976   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 977
 978   /* name */
 979   strncat(args, trace_name, args_left);
 980   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 981
 982   int retval = execute_command(args, username, password, lttd_path);
 983   if(retval) {
 984     gchar msg[256];
 985     guint msg_left = 256;
 986
 987     strcpy(msg, "A problem occured when executing the su command : ");
 988     msg_left = 256 - strlen(msg) - 1;
 989     strncat(msg, strerror(retval), msg_left);
 990     GtkWidget *dialogue =
 991       gtk_message_dialog_new(
 992         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 993         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 994         GTK_MESSAGE_ERROR,
 995         GTK_BUTTONS_OK,
 996         msg);
 997     gtk_dialog_run(GTK_DIALOG(dialogue));
 998     gtk_widget_destroy(dialogue);
 999   }
1000
1001 }
1002
1003 void stop_clicked (GtkButton *button, gpointer user_data)
1004 {
1005   ControlData *tcd = (ControlData*)user_data;
1006
1007   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
1008   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
1009   const gchar *trace_name =
1010     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
1011   const gchar *lttd_path = "";
1012   const gchar *trace_mode;
1013   const gchar *trace_mode_sel;
1014   GtkTreeIter iter;
1015
1016   gtk_combo_box_get_active_iter(GTK_COMBO_BOX(tcd->trace_mode_combo), &iter);
1017   gtk_tree_model_get(
1018       gtk_combo_box_get_model(GTK_COMBO_BOX(tcd->trace_mode_combo)),
1019       &iter, 0, &trace_mode_sel, -1);
1020   if(strcmp(trace_mode_sel, "normal") == 0)
1021     trace_mode = "normal";
1022   else
1023     trace_mode = "flight";
1024
1025   const gchar *lttctl_path =
1026     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
1027   gchar *trace_dir = gtk_entry_get_text(GTK_ENTRY(tcd->trace_dir_entry));
1028   GSList * trace_list = NULL;
1029
1030   trace_list = g_slist_append(trace_list, trace_dir);
1031
1032   /* Setup arguments to su */
1033   /* child */
1034   gchar args[MAX_ARGS_LEN];
1035   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
1036
1037   args[0] = '\0';
1038
1039   /* Command */
1040   strncat(args, "exec", args_left);
1041   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1042
1043   /* space */
1044   strncat(args, " ", args_left);
1045   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1046
1047   if(strcmp(lttctl_path, "") == 0)
1048     strncat(args, "lttctl", args_left);
1049   else
1050     strncat(args, lttctl_path, args_left);
1051   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1052
1053   /* space */
1054   strncat(args, " ", args_left);
1055   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1056
1057   /* Simply stop tracing and destroy channel */
1058   strncat(args, "-D", args_left);
1059   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1060
1061   if(strcmp(trace_mode, "flight") == 0) {
1062     /* space */
1063     strncat(args, " ", args_left);
1064     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1065
1066     /* trace dir */
1067     strncat(args, "-w ", args_left);
1068     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1069     strncat(args, trace_dir, args_left);
1070     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1071   }
1072
1073   /* space */
1074   strncat(args, " ", args_left);
1075   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1076
1077   /* name */
1078   strncat(args, trace_name, args_left);
1079   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1080
1081   int retval = execute_command(args, username, password, lttd_path);
1082   if(retval) {
1083     gchar msg[256];
1084     guint msg_left = 256;
1085
1086     strcpy(msg, "A problem occured when executing the su command : ");
1087     msg_left = 256 - strlen(msg) - 1;
1088     strncat(msg, strerror(retval), msg_left);
1089     GtkWidget *dialogue =
1090       gtk_message_dialog_new(
1091         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1092         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
1093         GTK_MESSAGE_ERROR,
1094         GTK_BUTTONS_OK,
1095         msg);
1096     gtk_dialog_run(GTK_DIALOG(dialogue));
1097     gtk_widget_destroy(dialogue);
1098     return;
1099   }
1100
1101
1102   /* Ask to the user if he wants to open the trace in a new window */
1103   GtkWidget *dialogue;
1104   GtkWidget *label;
1105   gint id;
1106
1107   dialogue = gtk_dialog_new_with_buttons("Open trace ?",
1108       GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1109       GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
1110       GTK_STOCK_YES,GTK_RESPONSE_ACCEPT,
1111       GTK_STOCK_NO,GTK_RESPONSE_REJECT,
1112       NULL);
1113   label = gtk_label_new("Do you want to open the trace in LTTV ?");
1114   gtk_widget_show(label);
1115
1116   gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialogue)->vbox),
1117       label);
1118
1119   id = gtk_dialog_run(GTK_DIALOG(dialogue));
1120
1121   switch(id){
1122     case GTK_RESPONSE_ACCEPT:
1123       {
1124         create_main_window_with_trace_list(trace_list);
1125       }
1126       break;
1127     case GTK_RESPONSE_REJECT:
1128     default:
1129       break;
1130   }
1131   gtk_widget_destroy(dialogue);
1132   g_slist_free(trace_list);
1133 }
1134
1135 void arm_clicked (GtkButton *button, gpointer user_data)
1136 {
1137   ControlData *tcd = (ControlData*)user_data;
1138
1139   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
1140   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
1141   const gchar *ltt_armall_path =
1142     gtk_entry_get_text(GTK_ENTRY(tcd->ltt_armall_path_entry));
1143
1144   /* Setup arguments to su */
1145   /* child */
1146   gchar args[MAX_ARGS_LEN];
1147   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
1148
1149   args[0] = '\0';
1150
1151   /* Command */
1152   strncat(args, "exec", args_left);
1153   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1154
1155   /* space */
1156   strncat(args, " ", args_left);
1157   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1158
1159   if(strcmp(ltt_armall_path, "") == 0)
1160     strncat(args, "ltt-armall", args_left);
1161   else
1162     strncat(args, ltt_armall_path, args_left);
1163   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1164
1165   int retval = execute_command(args, username, password, "");
1166   if(retval) {
1167     gchar msg[256];
1168     guint msg_left = 256;
1169
1170     strcpy(msg, "A problem occured when executing the su command : ");
1171     msg_left = 256 - strlen(msg) - 1;
1172     strncat(msg, strerror(retval), msg_left);
1173     GtkWidget *dialogue =
1174       gtk_message_dialog_new(
1175         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1176         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
1177         GTK_MESSAGE_ERROR,
1178         GTK_BUTTONS_OK,
1179         msg);
1180     gtk_dialog_run(GTK_DIALOG(dialogue));
1181     gtk_widget_destroy(dialogue);
1182   }
1183
1184 }
1185
1186 void disarm_clicked (GtkButton *button, gpointer user_data)
1187 {
1188   ControlData *tcd = (ControlData*)user_data;
1189
1190   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
1191   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
1192   const gchar *ltt_disarmall_path =
1193     gtk_entry_get_text(GTK_ENTRY(tcd->ltt_disarmall_path_entry));
1194
1195   /* Setup arguments to su */
1196   /* child */
1197   gchar args[MAX_ARGS_LEN];
1198   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
1199
1200   args[0] = '\0';
1201
1202   /* Command */
1203   strncat(args, "exec", args_left);
1204   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1205
1206   /* space */
1207   strncat(args, " ", args_left);
1208   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1209
1210   if(strcmp(ltt_disarmall_path, "") == 0)
1211     strncat(args, "ltt-disarmall", args_left);
1212   else
1213     strncat(args, ltt_disarmall_path, args_left);
1214   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1215
1216   int retval = execute_command(args, username, password, "");
1217   if(retval) {
1218     gchar msg[256];
1219     guint msg_left = 256;
1220
1221     strcpy(msg, "A problem occured when executing the su command : ");
1222     msg_left = 256 - strlen(msg) - 1;
1223     strncat(msg, strerror(retval), msg_left);
1224     GtkWidget *dialogue =
1225       gtk_message_dialog_new(
1226         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1227         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
1228         GTK_MESSAGE_ERROR,
1229         GTK_BUTTONS_OK,
1230         msg);
1231     gtk_dialog_run(GTK_DIALOG(dialogue));
1232     gtk_widget_destroy(dialogue);
1233   }
1234
1235 }
1236
1237
1238 /**
1239  *  @fn GtkWidget* h_guicontrol(Tab*)
1240  *
1241  *  Control Module's constructor hook
1242  *
1243  *  This constructor is given as a parameter to the menuitem and toolbar button
1244  *  registration. It creates the list.
1245  *  @param tab A pointer to the parent window.
1246  *  @return The widget created.
1247  */
1248 GtkWidget *
1249 h_guicontrol(LttvPlugin *plugin)
1250 {
1251   LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin);
1252   ControlData* f = gui_control(ptab);
1253
1254   return NULL;
1255 }
1256
1257 /**
1258  *  @fn static void init()
1259  *
1260  *  This function initializes the Filter Viewer functionnality through the
1261  *  gtkTraceSet API.
1262  */
1263 static void init() {
1264
1265   lttvwindow_register_constructor("guicontrol",
1266                                   "/",
1267                                   "Insert Tracing Control Module",
1268                                   hTraceControlInsert_xpm,
1269                                   "Insert Tracing Control Module",
1270                                   h_guicontrol);
1271 }
1272
1273 /**
1274  *  @fn void control_destroy_walk(gpointer,gpointer)
1275  *
1276  *  Initiate the destruction of the current gui module
1277  *  on the GTK Interface
1278  */
1279 void
1280 control_destroy_walk(gpointer data, gpointer user_data)
1281 {
1282   ControlData *tcd = (ControlData*)data;
1283
1284   g_debug("traceontrol.c : control_destroy_walk, %p", tcd);
1285
1286   /* May already have been done by GTK window closing */
1287   if(GTK_IS_WIDGET(guicontrol_get_widget(tcd)))
1288     gtk_widget_destroy(guicontrol_get_widget(tcd));
1289 }
1290
1291 /**
1292  *  @fn static void destroy()
1293  *  @brief plugin's destroy function
1294  *
1295  *  This function releases the memory reserved by the module and unregisters
1296  *  everything that has been registered in the gtkTraceSet API.
1297  */
1298 static void destroy() {
1299
1300   g_slist_foreach(g_control_list, control_destroy_walk, NULL );
1301
1302   lttvwindow_unregister_constructor(h_guicontrol);
1303
1304 }
1305
1306
1307 LTTV_MODULE("guitracecontrol", "Trace Control Window", \
1308     "Graphical module that let user control kernel tracing", \
1309     init, destroy, "lttvwindow")
1310