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., 51 Franklin Street, Fifth Floor, Boston,
  16  * MA 02110-1301, 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   ControlData* tcd = g_new(ControlData,1);
 168
 169   tcd->tab  = tab;
 170
 171   tcd->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 172   gtk_window_set_title(GTK_WINDOW(tcd->window), "LTTng Trace Control");
 173   /*
 174    * Initiating GtkTable layout
 175    * starts with 2 rows and 5 columns and
 176    * expands when expressions added
 177    */
 178   tcd->main_box = gtk_table_new(14,7,FALSE);
 179   gtk_table_set_row_spacings(GTK_TABLE(tcd->main_box),5);
 180   gtk_table_set_col_spacings(GTK_TABLE(tcd->main_box),5);
 181
 182   gtk_container_add(GTK_CONTAINER(tcd->window), GTK_WIDGET(tcd->main_box));
 183
 184   GList *focus_chain = NULL;
 185
 186   /*
 187    * start/pause/stop buttons
 188    */
 189
 190   GdkPixbuf *pixbuf;
 191   GtkWidget *image;
 192   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStart_xpm);
 193   image = gtk_image_new_from_pixbuf(pixbuf);
 194   tcd->ltt_armall_button = gtk_button_new_with_label("Arm LTTng kernel probes");
 195   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->ltt_armall_button), image);
 196   g_object_set(G_OBJECT(tcd->ltt_armall_button), "image", image, NULL);
 197   gtk_button_set_alignment(GTK_BUTTON(tcd->ltt_armall_button), 0.0, 0.0);
 198   gtk_widget_show (tcd->ltt_armall_button);
 199   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_armall_button,6,7,0,1,GTK_FILL,GTK_FILL,2,2);
 200
 201   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStop_xpm);
 202   image = gtk_image_new_from_pixbuf(pixbuf);
 203   tcd->ltt_disarmall_button = gtk_button_new_with_label("Disarm LTTng kernel probes");
 204   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->ltt_disarmall_button), image);
 205   g_object_set(G_OBJECT(tcd->ltt_disarmall_button), "image", image, NULL);
 206   gtk_button_set_alignment(GTK_BUTTON(tcd->ltt_disarmall_button), 0.0, 0.0);
 207   gtk_widget_show (tcd->ltt_disarmall_button);
 208   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_disarmall_button,6,7,1,2,GTK_FILL,GTK_FILL,2,2);
 209
 210   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStart_xpm);
 211   image = gtk_image_new_from_pixbuf(pixbuf);
 212   tcd->start_button = gtk_button_new_with_label("start");
 213   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->start_button), image);
 214   g_object_set(G_OBJECT(tcd->start_button), "image", image, NULL);
 215   gtk_button_set_alignment(GTK_BUTTON(tcd->start_button), 0.0, 0.0);
 216   gtk_widget_show (tcd->start_button);
 217   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_button,6,7,2,3,GTK_FILL,GTK_FILL,2,2);
 218
 219   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlPause_xpm);
 220   image = gtk_image_new_from_pixbuf(pixbuf);
 221   tcd->pause_button = gtk_button_new_with_label("pause");
 222   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->pause_button), image);
 223   g_object_set(G_OBJECT(tcd->pause_button), "image", image, NULL);
 224   gtk_button_set_alignment(GTK_BUTTON(tcd->pause_button), 0.0, 0.0);
 225   gtk_widget_show (tcd->pause_button);
 226   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->pause_button,6,7,3,4,GTK_FILL,GTK_FILL,2,2);
 227
 228   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlPause_xpm);
 229   image = gtk_image_new_from_pixbuf(pixbuf);
 230   tcd->unpause_button = gtk_button_new_with_label("unpause");
 231   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->unpause_button), image);
 232   g_object_set(G_OBJECT(tcd->unpause_button), "image", image, NULL);
 233   gtk_button_set_alignment(GTK_BUTTON(tcd->unpause_button), 0.0, 0.0);
 234   gtk_widget_show (tcd->unpause_button);
 235   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->unpause_button,6,7,4,5,GTK_FILL,GTK_FILL,2,2);
 236
 237   pixbuf = gdk_pixbuf_new_from_xpm_data((const char **)TraceControlStop_xpm);
 238   image = gtk_image_new_from_pixbuf(pixbuf);
 239   tcd->stop_button = gtk_button_new_with_label("stop");
 240   //2.6 gtk_button_set_image(GTK_BUTTON(tcd->stop_button), image);
 241   g_object_set(G_OBJECT(tcd->stop_button), "image", image, NULL);
 242   gtk_button_set_alignment(GTK_BUTTON(tcd->stop_button), 0.0, 0.0);
 243   gtk_widget_show (tcd->stop_button);
 244   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->stop_button,6,7,5,6,GTK_FILL,GTK_FILL,2,2);
 245
 246   /*
 247    *  First half of the filter window
 248    *  - textual entry of filter expression
 249    *  - processing button
 250    */
 251   tcd->username_label = gtk_label_new("Username:");
 252   gtk_widget_show (tcd->username_label);
 253   tcd->username_entry = gtk_entry_new();
 254   gtk_entry_set_text(GTK_ENTRY(tcd->username_entry),"root");
 255   gtk_widget_show (tcd->username_entry);
 256   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->username_label,0,2,0,1,GTK_FILL,GTK_FILL,2,2);
 257   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);
 258
 259
 260
 261   tcd->password_label = gtk_label_new("Password:");
 262   gtk_widget_show (tcd->password_label);
 263   tcd->password_entry = gtk_entry_new();
 264   gtk_entry_set_visibility(GTK_ENTRY(tcd->password_entry), FALSE);
 265   gtk_widget_show (tcd->password_entry);
 266   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->password_label,0,2,1,2,GTK_FILL,GTK_FILL,2,2);
 267   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);
 268
 269
 270   tcd->channel_dir_label = gtk_label_new("Channel directory:");
 271   gtk_widget_show (tcd->channel_dir_label);
 272   tcd->channel_dir_entry = gtk_entry_new();
 273   gtk_entry_set_text(GTK_ENTRY(tcd->channel_dir_entry),"/mnt/debugfs/ltt");
 274   gtk_widget_show (tcd->channel_dir_entry);
 275   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->channel_dir_label,0,2,2,3,GTK_FILL,GTK_FILL,2,2);
 276   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);
 277
 278   tcd->trace_dir_label = gtk_label_new("Trace directory:");
 279   gtk_widget_show (tcd->trace_dir_label);
 280   tcd->trace_dir_entry = gtk_entry_new();
 281   gtk_entry_set_text(GTK_ENTRY(tcd->trace_dir_entry),"/tmp/trace1");
 282   gtk_widget_show (tcd->trace_dir_entry);
 283   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_dir_label,0,2,3,4,GTK_FILL,GTK_FILL,2,2);
 284   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);
 285
 286   tcd->trace_name_label = gtk_label_new("Trace name:");
 287   gtk_widget_show (tcd->trace_name_label);
 288   tcd->trace_name_entry = gtk_entry_new();
 289   gtk_entry_set_text(GTK_ENTRY(tcd->trace_name_entry),"trace");
 290   gtk_widget_show (tcd->trace_name_entry);
 291   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_name_label,0,2,4,5,GTK_FILL,GTK_FILL,2,2);
 292   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);
 293
 294   tcd->trace_mode_label = gtk_label_new("Trace mode ");
 295   gtk_widget_show (tcd->trace_mode_label);
 296   tcd->trace_mode_combo = gtk_combo_box_new_text();
 297   gtk_combo_box_append_text(GTK_COMBO_BOX(tcd->trace_mode_combo),
 298       "normal");
 299   gtk_combo_box_append_text(GTK_COMBO_BOX(tcd->trace_mode_combo),
 300       "flight recorder");
 301   gtk_combo_box_set_active(GTK_COMBO_BOX(tcd->trace_mode_combo), 0);
 302   gtk_widget_show (tcd->trace_mode_combo);
 303   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->trace_mode_label,0,2,5,6,GTK_FILL,GTK_FILL,2,2);
 304   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);
 305
 306   tcd->start_daemon_label = gtk_label_new("Start daemon ");
 307   gtk_widget_show (tcd->start_daemon_label);
 308   tcd->start_daemon_check = gtk_check_button_new();
 309   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tcd->start_daemon_check), TRUE);
 310   gtk_widget_show (tcd->start_daemon_check);
 311   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_daemon_label,0,2,6,7,GTK_FILL,GTK_FILL,2,2);
 312   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->start_daemon_check,2,6,6,7,GTK_FILL,GTK_FILL,0,0);
 313
 314   tcd->append_label = gtk_label_new("Append to trace ");
 315   gtk_widget_show (tcd->append_label);
 316   tcd->append_check = gtk_check_button_new();
 317   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(tcd->append_check), FALSE);
 318   gtk_widget_show (tcd->append_check);
 319   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->append_label,0,2,7,8,GTK_FILL,GTK_FILL,2,2);
 320   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->append_check,2,6,7,8,GTK_FILL,GTK_FILL,0,0);
 321
 322
 323   tcd->optional_label = gtk_label_new("Optional fields ");
 324   gtk_widget_show (tcd->optional_label);
 325   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->optional_label,0,6,8,9,GTK_FILL,GTK_FILL,2,2);
 326
 327   tcd->subbuf_size_label = gtk_label_new("Subbuffer size:");
 328   gtk_widget_show (tcd->subbuf_size_label);
 329   tcd->subbuf_size_entry = gtk_entry_new();
 330   gtk_widget_show (tcd->subbuf_size_entry);
 331   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_size_label,0,2,9,10,GTK_FILL,GTK_FILL,2,2);
 332   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);
 333
 334   tcd->subbuf_num_label = gtk_label_new("Number of subbuffers:");
 335   gtk_widget_show (tcd->subbuf_num_label);
 336   tcd->subbuf_num_entry = gtk_entry_new();
 337   gtk_widget_show (tcd->subbuf_num_entry);
 338   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->subbuf_num_label,0,2,10,11,GTK_FILL,GTK_FILL,2,2);
 339   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);
 340
 341   tcd->lttd_threads_label = gtk_label_new("Number of lttd threads:");
 342   gtk_widget_show (tcd->lttd_threads_label);
 343   tcd->lttd_threads_entry = gtk_entry_new();
 344   gtk_entry_set_text(GTK_ENTRY(tcd->lttd_threads_entry), "1");
 345   gtk_widget_show (tcd->lttd_threads_entry);
 346   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_threads_label,0,2,11,12,GTK_FILL,GTK_FILL,2,2);
 347   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);
 348
 349   tcd->lttctl_path_label = gtk_label_new("path to lttctl:");
 350   gtk_widget_show (tcd->lttctl_path_label);
 351   tcd->lttctl_path_entry = gtk_entry_new();
 352   gtk_entry_set_text(GTK_ENTRY(tcd->lttctl_path_entry),PACKAGE_BIN_DIR "/lttctl");
 353   gtk_widget_show (tcd->lttctl_path_entry);
 354   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttctl_path_label,0,2,12,13,GTK_FILL,GTK_FILL,2,2);
 355   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);
 356
 357
 358   tcd->lttd_path_label = gtk_label_new("path to lttd:");
 359   gtk_widget_show (tcd->lttd_path_label);
 360   tcd->lttd_path_entry = gtk_entry_new();
 361   gtk_entry_set_text(GTK_ENTRY(tcd->lttd_path_entry),PACKAGE_BIN_DIR "/lttd");
 362   gtk_widget_show (tcd->lttd_path_entry);
 363   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->lttd_path_label,0,2,13,14,GTK_FILL,GTK_FILL,2,2);
 364   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);
 365
 366   tcd->ltt_armall_path_label = gtk_label_new("path to ltt_armall:");
 367   gtk_widget_show (tcd->ltt_armall_path_label);
 368   tcd->ltt_armall_path_entry = gtk_entry_new();
 369   gtk_entry_set_text(GTK_ENTRY(tcd->ltt_armall_path_entry),PACKAGE_BIN_DIR "/ltt-armall");
 370   gtk_widget_show (tcd->ltt_armall_path_entry);
 371   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_armall_path_label,0,2,14,15,GTK_FILL,GTK_FILL,2,2);
 372   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);
 373
 374   tcd->ltt_disarmall_path_label = gtk_label_new("path to ltt_disarmall:");
 375   gtk_widget_show (tcd->ltt_disarmall_path_label);
 376   tcd->ltt_disarmall_path_entry = gtk_entry_new();
 377   gtk_entry_set_text(GTK_ENTRY(tcd->ltt_disarmall_path_entry),PACKAGE_BIN_DIR "/ltt-disarmall");
 378   gtk_widget_show (tcd->ltt_disarmall_path_entry);
 379   gtk_table_attach( GTK_TABLE(tcd->main_box),tcd->ltt_disarmall_path_label,0,2,15,16,GTK_FILL,GTK_FILL,2,2);
 380   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);
 381
 382   focus_chain = g_list_append (focus_chain, tcd->username_entry);
 383   focus_chain = g_list_append (focus_chain, tcd->password_entry);
 384   focus_chain = g_list_append (focus_chain, tcd->ltt_armall_path_entry);
 385   focus_chain = g_list_append (focus_chain, tcd->ltt_disarmall_path_entry);
 386   focus_chain = g_list_append (focus_chain, tcd->start_button);
 387   focus_chain = g_list_append (focus_chain, tcd->pause_button);
 388   focus_chain = g_list_append (focus_chain, tcd->unpause_button);
 389   focus_chain = g_list_append (focus_chain, tcd->stop_button);
 390   focus_chain = g_list_append (focus_chain, tcd->channel_dir_entry);
 391   focus_chain = g_list_append (focus_chain, tcd->trace_dir_entry);
 392   focus_chain = g_list_append (focus_chain, tcd->trace_name_entry);
 393   focus_chain = g_list_append (focus_chain, tcd->trace_mode_combo);
 394   focus_chain = g_list_append (focus_chain, tcd->start_daemon_check);
 395   focus_chain = g_list_append (focus_chain, tcd->append_check);
 396   focus_chain = g_list_append (focus_chain, tcd->subbuf_size_entry);
 397   focus_chain = g_list_append (focus_chain, tcd->subbuf_num_entry);
 398   focus_chain = g_list_append (focus_chain, tcd->lttd_threads_entry);
 399   focus_chain = g_list_append (focus_chain, tcd->lttctl_path_entry);
 400   focus_chain = g_list_append (focus_chain, tcd->lttd_path_entry);
 401
 402   gtk_container_set_focus_chain(GTK_CONTAINER(tcd->main_box), focus_chain);
 403
 404   g_list_free(focus_chain);
 405
 406   g_signal_connect(G_OBJECT(tcd->start_button), "clicked",
 407       (GCallback)start_clicked, tcd);
 408   g_signal_connect(G_OBJECT(tcd->pause_button), "clicked",
 409       (GCallback)pause_clicked, tcd);
 410   g_signal_connect(G_OBJECT(tcd->unpause_button), "clicked",
 411       (GCallback)unpause_clicked, tcd);
 412   g_signal_connect(G_OBJECT(tcd->stop_button), "clicked",
 413       (GCallback)stop_clicked, tcd);
 414   g_signal_connect(G_OBJECT(tcd->ltt_armall_button), "clicked",
 415       (GCallback)arm_clicked, tcd);
 416   g_signal_connect(G_OBJECT(tcd->ltt_disarmall_button), "clicked",
 417       (GCallback)disarm_clicked, tcd);
 418
 419   /*
 420    * show main container
 421    */
 422   gtk_widget_show(tcd->main_box);
 423   gtk_widget_show(tcd->window);
 424
 425
 426   g_object_set_data_full(
 427       G_OBJECT(guicontrol_get_widget(tcd)),
 428       "control_viewer_data",
 429       tcd,
 430       (GDestroyNotify)gui_control_destructor);
 431
 432   g_control_list = g_slist_append(
 433       g_control_list,
 434       tcd);
 435
 436   return tcd;
 437 }
 438
 439
 440 /**
 441  *  @fn void gui_control_destructor(ControlData*)
 442  *
 443  *  Destructor for the filter gui module
 444  *  @param tcd The module structure
 445  */
 446 void
 447 gui_control_destructor(ControlData *tcd)
 448 {
 449   /* May already been done by GTK window closing */
 450   if(GTK_IS_WIDGET(guicontrol_get_widget(tcd))){
 451     g_info("widget still exists");
 452   }
 453 //  if(tab != NULL) {
 454 //    lttvwindow_unregister_traceset_notify(tcd->tab,
 455 //                                          filter_traceset_changed,
 456 //                                          filter_viewer_data);
 457 //  }
 458   lttvwindowtraces_background_notify_remove(tcd);
 459
 460   g_control_list = g_slist_remove(g_control_list, tcd);
 461
 462   g_free(tcd);
 463 }
 464
 465 static int execute_command(const gchar *command, const gchar *username,
 466     const gchar *password, const gchar *lttd_path)
 467 {
 468   pid_t pid;
 469   int fdpty;
 470   pid = forkpty(&fdpty, NULL, NULL, NULL);
 471   int retval = 0;
 472
 473   if(pid > 0) {
 474     /* parent */
 475     gchar buf[256];
 476     int status;
 477     ssize_t count;
 478     /* discuss with su */
 479
 480     struct pollfd pollfd;
 481     int num_rdy;
 482     int num_hup = 0;
 483                 enum read_state { GET_LINE, GET_SEMI, GET_SPACE } read_state = GET_LINE;
 484
 485                 retval = fcntl(fdpty, F_SETFL, O_WRONLY);
 486                 if(retval == -1) {
 487                         perror("Error in fcntl");
 488                         goto wait_child;
 489                 }
 490
 491     /* Read the output from the child terminal before the prompt. If no data in
 492      * 200 ms, we stop reading to give the password */
 493     g_info("Reading from child console...");
 494     while(1) {
 495       pollfd.fd = fdpty;
 496       pollfd.events = POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL;
 497
 498       num_rdy = poll(&pollfd, 1, -1);
 499       if(num_rdy == -1) {
 500         perror("Poll error");
 501         goto wait_child;
 502       }
 503
 504       /* Timeout : Stop waiting for chars */
 505       if(num_rdy == 0) goto wait_child;
 506
 507       /* Check for fatal errors */
 508       if(pollfd.revents & POLLERR) {
 509           g_warning("Error returned in polling fd\n");
 510           num_hup++;
 511       }
 512       if(pollfd.revents & POLLNVAL) {
 513         g_warning("Polling fd tells it is not open");
 514         num_hup++;
 515       }
 516
 517       if(pollfd.revents & POLLHUP) {
 518
 519         g_info("Polling FD : hung up.");
 520         num_hup++;
 521
 522       }
 523
 524       if(pollfd.revents & (POLLIN | POLLPRI)) {
 525         int count;
 526         count = read (fdpty, buf, 256);
 527         if(count > 0) {
 528           unsigned int i;
 529           buf[count] = '\0';
 530           g_printf("%s", buf);
 531           for(i=0; i<count; i++) {
 532             switch(read_state) {
 533             case GET_LINE:
 534               if(buf[i] == '\n') {
 535                 read_state = GET_SEMI;
 536                 g_debug("Tracecontrol input line skip\n");
 537               }
 538               break;
 539             case GET_SEMI:
 540               if(buf[i] == ':') {
 541                 g_debug("Tracecontrol input  : marker found\n");
 542                 read_state = GET_SPACE;
 543               }
 544               break;
 545             case GET_SPACE:
 546               if(buf[i] == ' ') {
 547                 g_debug("Tracecontrol input space marker found\n");
 548                 goto write_password;
 549               }
 550               break;
 551             }
 552           }
 553         } else if(count == -1) {
 554           perror("Error in read");
 555           goto wait_child;
 556         }
 557
 558       }
 559
 560       if(num_hup > 0) {
 561         g_warning("Child hung up without returning a full reply");
 562         goto wait_child;
 563       }
 564     }
 565 write_password:
 566                 fsync(fdpty);
 567                 pollfd.fd = fdpty;
 568                 pollfd.events = POLLOUT|POLLERR|POLLHUP|POLLNVAL;
 569
 570                 num_rdy = poll(&pollfd, 1, -1);
 571                 if(num_rdy == -1) {
 572                         perror("Poll error");
 573                         goto wait_child;
 574                 }
 575
 576     /* Write the password */
 577     g_info("Got su prompt, now writing password...");
 578     int ret;
 579                 sleep(1);
 580     ret = write(fdpty, password, strlen(password));
 581     if(ret < 0) perror("Error in write");
 582     ret = write(fdpty, "\n", 1);
 583     if(ret < 0) perror("Error in write");
 584     fsync(fdpty);
 585     /* Take the output from the terminal and show it on the real console */
 586     g_info("Getting data from child terminal...");
 587     while(1) {
 588       int num_hup = 0;
 589       pollfd.fd = fdpty;
 590       pollfd.events = POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL;
 591
 592       num_rdy = poll(&pollfd, 1, -1);
 593       if(num_rdy == -1) {
 594         perror("Poll error");
 595         goto wait_child;
 596       }
 597       if(num_rdy == 0) break;
 598
 599                         if(pollfd.revents & (POLLERR|POLLNVAL)) {
 600                                 g_warning("Error returned in polling fd\n");
 601                                 num_hup++;
 602                         }
 603
 604                         if(pollfd.revents & (POLLIN|POLLPRI) ) {
 605                                 count = read (fdpty, buf, 256);
 606                                 if(count > 0) {
 607                                         buf[count] = '\0';
 608                                         printf("%s", buf);
 609                                 } else if(count == -1) {
 610                                         perror("Error in read");
 611                                         goto wait_child;
 612                                 }
 613                         }
 614
 615                         if(pollfd.revents & POLLHUP) {
 616         g_info("Polling FD : hung up.");
 617         num_hup++;
 618                         }
 619
 620       if(num_hup > 0) goto wait_child;
 621     }
 622 wait_child:
 623     g_info("Waiting for child exit...");
 624
 625     ret = waitpid(pid, &status, 0);
 626
 627     if(ret == -1) {
 628       g_warning("An error occured in wait : %s",
 629           strerror(errno));
 630     } else {
 631       if(WIFEXITED(status))
 632         if(WEXITSTATUS(status) != 0) {
 633           retval = WEXITSTATUS(status);
 634           g_warning("An error occured in the su command : %s",
 635               strerror(retval));
 636         }
 637     }
 638
 639     g_info("Child exited.");
 640
 641   } else if(pid == 0) {
 642     /* Setup environment variables */
 643     if(strcmp(lttd_path, "") != 0)
 644       setenv("LTT_DAEMON", lttd_path, 1);
 645
 646                 /* One comment line (must be only one) */
 647     g_printf("Executing (as %s) : %s\n", username, command);
 648
 649     execlp("su", "su", "-p", "-c", command, username, NULL);
 650     exit(-1); /* not supposed to happen! */
 651
 652     //gint ret = execvp();
 653
 654   } else {
 655     /* error */
 656     g_warning("Error happened when forking for su");
 657   }
 658
 659   return retval;
 660 }
 661
 662
 663 /* Callbacks */
 664
 665 void start_clicked (GtkButton *button, gpointer user_data)
 666 {
 667   ControlData *tcd = (ControlData*)user_data;
 668
 669   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 670   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 671   const gchar *channel_dir =
 672     gtk_entry_get_text(GTK_ENTRY(tcd->channel_dir_entry));
 673   const gchar *trace_dir = gtk_entry_get_text(GTK_ENTRY(tcd->trace_dir_entry));
 674   const gchar *trace_name =
 675     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 676
 677   const gchar *trace_mode_sel;
 678   GtkTreeIter iter;
 679
 680   gtk_combo_box_get_active_iter(GTK_COMBO_BOX(tcd->trace_mode_combo), &iter);
 681   gtk_tree_model_get(
 682       gtk_combo_box_get_model(GTK_COMBO_BOX(tcd->trace_mode_combo)),
 683       &iter, 0, &trace_mode_sel, -1);
 684   //const gchar *trace_mode_sel =
 685     //2.6+ gtk_combo_box_get_active_text(GTK_COMBO_BOX(tcd->trace_mode_combo));
 686   const gchar *trace_mode;
 687   if(strcmp(trace_mode_sel, "normal") == 0)
 688     trace_mode = "normal";
 689   else
 690     trace_mode = "flight";
 691
 692   gboolean start_daemon =
 693     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tcd->start_daemon_check));
 694
 695   gboolean append =
 696     gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tcd->append_check));
 697
 698   const gchar *subbuf_size =
 699     gtk_entry_get_text(GTK_ENTRY(tcd->subbuf_size_entry));
 700   const gchar *subbuf_num =
 701     gtk_entry_get_text(GTK_ENTRY(tcd->subbuf_num_entry));
 702         const gchar *threads_num =
 703     gtk_entry_get_text(GTK_ENTRY(tcd->lttd_threads_entry));
 704   const gchar *lttctl_path =
 705     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 706   const gchar *lttd_path = gtk_entry_get_text(GTK_ENTRY(tcd->lttd_path_entry));
 707
 708   /* Setup arguments to su */
 709   /* child */
 710   gchar args[MAX_ARGS_LEN];
 711   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 712
 713   args[0] = '\0';
 714
 715   /* Command */
 716   strncat(args, "exec", 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(lttctl_path, "") == 0)
 724     strncat(args, "lttctl", args_left);
 725   else
 726     strncat(args, lttctl_path, args_left);
 727   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 728
 729   /* space */
 730   strncat(args, " ", args_left);
 731   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 732
 733   /* Start daemon ? */
 734   if(start_daemon) {
 735     strncat(args, "-C", args_left);
 736     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 737   } else {
 738     /* Simply create the channel and then start tracing */
 739     //strncat(args, "-b", args_left);
 740     //args_left = MAX_ARGS_LEN - strlen(args) - 1;
 741   }
 742
 743   /* space */
 744   strncat(args, " ", args_left);
 745   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 746
 747   /* channel dir */
 748   strncat(args, "--channel_root ", args_left);
 749   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 750   strncat(args, channel_dir, args_left);
 751   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 752
 753   /* space */
 754   strncat(args, " ", args_left);
 755   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 756
 757   /* trace dir */
 758   strncat(args, "-w ", args_left);
 759   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 760   strncat(args, trace_dir, args_left);
 761   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 762
 763   /* space */
 764   strncat(args, " ", args_left);
 765   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 766
 767   if(strcmp(trace_mode, "flight") == 0) {
 768     strncat(args, "-o channel.all.overwrite=1", args_left);
 769     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 770   } else {
 771     strncat(args, "-o channel.all.overwrite=0", args_left);
 772     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 773   }
 774
 775   /* Append to trace ? */
 776   if(append) {
 777     /* space */
 778     strncat(args, " ", args_left);
 779     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 780     strncat(args, "-a", args_left);
 781     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 782   }
 783
 784   /* optional arguments */
 785   /* subbuffer size */
 786   if(strcmp(subbuf_size, "") != 0) {
 787     /* space */
 788     strncat(args, " ", args_left);
 789     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 790
 791     strncat(args, "-o channel.all.bufsize=", args_left);
 792     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 793     strncat(args, subbuf_size, args_left);
 794     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 795   }
 796
 797   /* number of subbuffers */
 798   if(strcmp(subbuf_num, "") != 0) {
 799     /* space */
 800     strncat(args, " ", args_left);
 801     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 802
 803     strncat(args, "-o channel.all.bufnum=", args_left);
 804     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 805     strncat(args, subbuf_num, args_left);
 806     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 807   }
 808
 809   /* number of lttd threads */
 810   if(strcmp(threads_num, "") != 0) {
 811     /* space */
 812     strncat(args, " ", args_left);
 813     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 814
 815     strncat(args, "-n ", args_left);
 816     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 817     strncat(args, threads_num, args_left);
 818     args_left = MAX_ARGS_LEN - strlen(args) - 1;
 819   }
 820
 821   /* space */
 822   strncat(args, " ", args_left);
 823   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 824
 825   /* name */
 826   strncat(args, trace_name, args_left);
 827   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 828
 829   int retval = execute_command(args, username, password, lttd_path);
 830
 831   if(retval) {
 832     gchar msg[256];
 833     guint msg_left = 256;
 834
 835     strcpy(msg, "A problem occured when executing the su command : ");
 836     msg_left = 256 - strlen(msg) - 1;
 837     strncat(msg, strerror(retval), msg_left);
 838     GtkWidget *dialogue =
 839       gtk_message_dialog_new(
 840         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 841         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 842         GTK_MESSAGE_ERROR,
 843         GTK_BUTTONS_OK,
 844         "%s", msg);
 845     gtk_dialog_run(GTK_DIALOG(dialogue));
 846     gtk_widget_destroy(dialogue);
 847   }
 848
 849 }
 850
 851
 852 void pause_clicked (GtkButton *button, gpointer user_data)
 853 {
 854   ControlData *tcd = (ControlData*)user_data;
 855
 856   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 857   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 858   const gchar *trace_name =
 859     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 860   const gchar *lttd_path = "";
 861
 862   const gchar *lttctl_path =
 863     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 864
 865   /* Setup arguments to su */
 866   /* child */
 867   gchar args[MAX_ARGS_LEN];
 868   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 869
 870   args[0] = '\0';
 871
 872   /* Command */
 873   strncat(args, "exec", args_left);
 874   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 875
 876   /* space */
 877   strncat(args, " ", args_left);
 878   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 879
 880   if(strcmp(lttctl_path, "") == 0)
 881     strncat(args, "lttctl", args_left);
 882   else
 883     strncat(args, lttctl_path, args_left);
 884   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 885
 886  /* space */
 887   strncat(args, " ", args_left);
 888   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 889
 890   /* Simply pause tracing */
 891   strncat(args, "-p", args_left);
 892   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 893
 894   /* space */
 895   strncat(args, " ", args_left);
 896   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 897
 898   /* name */
 899   strncat(args, trace_name, args_left);
 900   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 901
 902   int retval = execute_command(args, username, password, lttd_path);
 903   if(retval) {
 904     gchar msg[256];
 905     guint msg_left = 256;
 906
 907     strcpy(msg, "A problem occured when executing the su command : ");
 908     msg_left = 256 - strlen(msg) - 1;
 909     strncat(msg, strerror(retval), msg_left);
 910     GtkWidget *dialogue =
 911       gtk_message_dialog_new(
 912         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 913         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 914         GTK_MESSAGE_ERROR,
 915         GTK_BUTTONS_OK,
 916         "%s", msg);
 917     gtk_dialog_run(GTK_DIALOG(dialogue));
 918     gtk_widget_destroy(dialogue);
 919   }
 920
 921 }
 922
 923 void unpause_clicked (GtkButton *button, gpointer user_data)
 924 {
 925   ControlData *tcd = (ControlData*)user_data;
 926
 927   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 928   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
 929   const gchar *trace_name =
 930     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
 931   const gchar *lttd_path = "";
 932
 933   const gchar *lttctl_path =
 934     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
 935
 936   /* Setup arguments to su */
 937   /* child */
 938   gchar args[MAX_ARGS_LEN];
 939   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
 940
 941   args[0] = '\0';
 942
 943   /* Command */
 944   strncat(args, "exec", args_left);
 945   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 946
 947   /* space */
 948   strncat(args, " ", args_left);
 949   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 950
 951   if(strcmp(lttctl_path, "") == 0)
 952     strncat(args, "lttctl", args_left);
 953   else
 954     strncat(args, lttctl_path, args_left);
 955   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 956
 957   /* space */
 958   strncat(args, " ", args_left);
 959   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 960
 961   /* Simply unpause tracing */
 962   strncat(args, "-s", args_left);
 963   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 964
 965   /* space */
 966   strncat(args, " ", args_left);
 967   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 968
 969   /* name */
 970   strncat(args, trace_name, args_left);
 971   args_left = MAX_ARGS_LEN - strlen(args) - 1;
 972
 973   int retval = execute_command(args, username, password, lttd_path);
 974   if(retval) {
 975     gchar msg[256];
 976     guint msg_left = 256;
 977
 978     strcpy(msg, "A problem occured when executing the su command : ");
 979     msg_left = 256 - strlen(msg) - 1;
 980     strncat(msg, strerror(retval), msg_left);
 981     GtkWidget *dialogue =
 982       gtk_message_dialog_new(
 983         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
 984         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
 985         GTK_MESSAGE_ERROR,
 986         GTK_BUTTONS_OK,
 987         "%s", msg);
 988     gtk_dialog_run(GTK_DIALOG(dialogue));
 989     gtk_widget_destroy(dialogue);
 990   }
 991
 992 }
 993
 994 void stop_clicked (GtkButton *button, gpointer user_data)
 995 {
 996   ControlData *tcd = (ControlData*)user_data;
 997
 998   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
 999   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
1000   const gchar *trace_name =
1001     gtk_entry_get_text(GTK_ENTRY(tcd->trace_name_entry));
1002   const gchar *lttd_path = "";
1003   const gchar *trace_mode;
1004   const gchar *trace_mode_sel;
1005   GtkTreeIter iter;
1006
1007   gtk_combo_box_get_active_iter(GTK_COMBO_BOX(tcd->trace_mode_combo), &iter);
1008   gtk_tree_model_get(
1009       gtk_combo_box_get_model(GTK_COMBO_BOX(tcd->trace_mode_combo)),
1010       &iter, 0, &trace_mode_sel, -1);
1011   if(strcmp(trace_mode_sel, "normal") == 0)
1012     trace_mode = "normal";
1013   else
1014     trace_mode = "flight";
1015
1016   const gchar *lttctl_path =
1017     gtk_entry_get_text(GTK_ENTRY(tcd->lttctl_path_entry));
1018   const gchar *trace_dir = gtk_entry_get_text(GTK_ENTRY(tcd->trace_dir_entry));
1019   GSList * trace_list = NULL;
1020
1021   trace_list = g_slist_append(trace_list, (gpointer) trace_dir);
1022
1023   /* Setup arguments to su */
1024   /* child */
1025   gchar args[MAX_ARGS_LEN];
1026   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
1027
1028   args[0] = '\0';
1029
1030   /* Command */
1031   strncat(args, "exec", args_left);
1032   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1033
1034   /* space */
1035   strncat(args, " ", args_left);
1036   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1037
1038   if(strcmp(lttctl_path, "") == 0)
1039     strncat(args, "lttctl", args_left);
1040   else
1041     strncat(args, lttctl_path, args_left);
1042   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1043
1044   /* space */
1045   strncat(args, " ", args_left);
1046   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1047
1048   /* Simply stop tracing and destroy channel */
1049   strncat(args, "-D", args_left);
1050   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1051
1052   if(strcmp(trace_mode, "flight") == 0) {
1053     /* space */
1054     strncat(args, " ", args_left);
1055     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1056
1057     /* trace dir */
1058     strncat(args, "-w ", args_left);
1059     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1060     strncat(args, trace_dir, args_left);
1061     args_left = MAX_ARGS_LEN - strlen(args) - 1;
1062   }
1063
1064   /* space */
1065   strncat(args, " ", args_left);
1066   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1067
1068   /* name */
1069   strncat(args, trace_name, args_left);
1070   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1071
1072   int retval = execute_command(args, username, password, lttd_path);
1073   if(retval) {
1074     gchar msg[256];
1075     guint msg_left = 256;
1076
1077     strcpy(msg, "A problem occured when executing the su command : ");
1078     msg_left = 256 - strlen(msg) - 1;
1079     strncat(msg, strerror(retval), msg_left);
1080     GtkWidget *dialogue =
1081       gtk_message_dialog_new(
1082         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1083         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
1084         GTK_MESSAGE_ERROR,
1085         GTK_BUTTONS_OK,
1086         "%s", msg);
1087     gtk_dialog_run(GTK_DIALOG(dialogue));
1088     gtk_widget_destroy(dialogue);
1089     return;
1090   }
1091
1092
1093   /* Ask to the user if he wants to open the trace in a new window */
1094   GtkWidget *dialogue;
1095   GtkWidget *label;
1096   gint id;
1097
1098   dialogue = gtk_dialog_new_with_buttons("Open trace ?",
1099       GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1100       GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
1101       GTK_STOCK_YES,GTK_RESPONSE_ACCEPT,
1102       GTK_STOCK_NO,GTK_RESPONSE_REJECT,
1103       NULL);
1104   label = gtk_label_new("Do you want to open the trace in LTTV ?");
1105   gtk_widget_show(label);
1106
1107   gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialogue)->vbox),
1108       label);
1109
1110   id = gtk_dialog_run(GTK_DIALOG(dialogue));
1111
1112   switch(id){
1113     case GTK_RESPONSE_ACCEPT:
1114       {
1115                /* TODO ybrosseau: 2011-04-20: Add support for live trace */
1116               create_main_window_with_trace_list(trace_list, FALSE);
1117       }
1118       break;
1119     case GTK_RESPONSE_REJECT:
1120     default:
1121       break;
1122   }
1123   gtk_widget_destroy(dialogue);
1124   g_slist_free(trace_list);
1125 }
1126
1127 void arm_clicked (GtkButton *button, gpointer user_data)
1128 {
1129   ControlData *tcd = (ControlData*)user_data;
1130
1131   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
1132   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
1133   const gchar *ltt_armall_path =
1134     gtk_entry_get_text(GTK_ENTRY(tcd->ltt_armall_path_entry));
1135
1136   /* Setup arguments to su */
1137   /* child */
1138   gchar args[MAX_ARGS_LEN];
1139   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
1140
1141   args[0] = '\0';
1142
1143   /* Command */
1144   strncat(args, "exec", args_left);
1145   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1146
1147   /* space */
1148   strncat(args, " ", args_left);
1149   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1150
1151   if(strcmp(ltt_armall_path, "") == 0)
1152     strncat(args, "ltt-armall", args_left);
1153   else
1154     strncat(args, ltt_armall_path, args_left);
1155   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1156
1157   int retval = execute_command(args, username, password, "");
1158   if(retval) {
1159     gchar msg[256];
1160     guint msg_left = 256;
1161
1162     strcpy(msg, "A problem occured when executing the su command : ");
1163     msg_left = 256 - strlen(msg) - 1;
1164     strncat(msg, strerror(retval), msg_left);
1165     GtkWidget *dialogue =
1166       gtk_message_dialog_new(
1167         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1168         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
1169         GTK_MESSAGE_ERROR,
1170         GTK_BUTTONS_OK,
1171         "%s", msg);
1172     gtk_dialog_run(GTK_DIALOG(dialogue));
1173     gtk_widget_destroy(dialogue);
1174   }
1175
1176 }
1177
1178 void disarm_clicked (GtkButton *button, gpointer user_data)
1179 {
1180   ControlData *tcd = (ControlData*)user_data;
1181
1182   const gchar *username = gtk_entry_get_text(GTK_ENTRY(tcd->username_entry));
1183   const gchar *password = gtk_entry_get_text(GTK_ENTRY(tcd->password_entry));
1184   const gchar *ltt_disarmall_path =
1185     gtk_entry_get_text(GTK_ENTRY(tcd->ltt_disarmall_path_entry));
1186
1187   /* Setup arguments to su */
1188   /* child */
1189   gchar args[MAX_ARGS_LEN];
1190   gint args_left = MAX_ARGS_LEN - 1; /* for \0 */
1191
1192   args[0] = '\0';
1193
1194   /* Command */
1195   strncat(args, "exec", args_left);
1196   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1197
1198   /* space */
1199   strncat(args, " ", args_left);
1200   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1201
1202   if(strcmp(ltt_disarmall_path, "") == 0)
1203     strncat(args, "ltt-disarmall", args_left);
1204   else
1205     strncat(args, ltt_disarmall_path, args_left);
1206   args_left = MAX_ARGS_LEN - strlen(args) - 1;
1207
1208   int retval = execute_command(args, username, password, "");
1209   if(retval) {
1210     gchar msg[256];
1211     guint msg_left = 256;
1212
1213     strcpy(msg, "A problem occured when executing the su command : ");
1214     msg_left = 256 - strlen(msg) - 1;
1215     strncat(msg, strerror(retval), msg_left);
1216     GtkWidget *dialogue =
1217       gtk_message_dialog_new(
1218         GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(button))),
1219         GTK_DIALOG_MODAL|GTK_DIALOG_DESTROY_WITH_PARENT,
1220         GTK_MESSAGE_ERROR,
1221         GTK_BUTTONS_OK,
1222         "%s", msg);
1223     gtk_dialog_run(GTK_DIALOG(dialogue));
1224     gtk_widget_destroy(dialogue);
1225   }
1226
1227 }
1228
1229
1230 /**
1231  *  @fn GtkWidget* h_guicontrol(Tab*)
1232  *
1233  *  Control Module's constructor hook
1234  *
1235  *  This constructor is given as a parameter to the menuitem and toolbar button
1236  *  registration. It creates the list.
1237  *  @param tab A pointer to the parent window.
1238  *  @return The widget created.
1239  */
1240 GtkWidget *
1241 h_guicontrol(LttvPlugin *plugin)
1242 {
1243         LttvPluginTab *ptab = LTTV_PLUGIN_TAB(plugin);
1244         gui_control(ptab) ;
1245
1246         /* TODO ybrosseau 2011-02-04: We should probably return a widget here */
1247         return NULL;
1248 }
1249
1250 /**
1251  *  @fn static void init()
1252  *
1253  *  This function initializes the Filter Viewer functionnality through the
1254  *  gtkTraceSet API.
1255  */
1256 static void init() {
1257
1258   lttvwindow_register_constructor("guicontrol",
1259                                   "/",
1260                                   "Insert Tracing Control Module",
1261                                   hTraceControlInsert_xpm,
1262                                   "Insert Tracing Control Module",
1263                                   h_guicontrol);
1264 }
1265
1266 /**
1267  *  @fn void control_destroy_walk(gpointer,gpointer)
1268  *
1269  *  Initiate the destruction of the current gui module
1270  *  on the GTK Interface
1271  */
1272 void
1273 control_destroy_walk(gpointer data, gpointer user_data)
1274 {
1275   ControlData *tcd = (ControlData*)data;
1276
1277   g_debug("traceontrol.c : control_destroy_walk, %p", tcd);
1278
1279   /* May already have been done by GTK window closing */
1280   if(GTK_IS_WIDGET(guicontrol_get_widget(tcd)))
1281     gtk_widget_destroy(guicontrol_get_widget(tcd));
1282 }
1283
1284 /**
1285  *  @fn static void destroy()
1286  *  @brief plugin's destroy function
1287  *
1288  *  This function releases the memory reserved by the module and unregisters
1289  *  everything that has been registered in the gtkTraceSet API.
1290  */
1291 static void destroy() {
1292
1293   g_slist_foreach(g_control_list, control_destroy_walk, NULL );
1294
1295   lttvwindow_unregister_constructor(h_guicontrol);
1296
1297 }
1298
1299
1300 LTTV_MODULE("guitracecontrol", "Trace Control Window", \
1301     "Graphical module that let user control kernel tracing", \
1302     init, destroy, "lttvwindow")
1303