gparted/src/FileSystem.cc

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/* Copyright (C) 2004 Bart
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "../include/FileSystem.h"
#include "../include/GParted_Core.h"
#include <cerrno>
#include <iostream>
#include <gtkmm/main.h>
#include <signal.h>
#include <fcntl.h>
namespace GParted
{
FileSystem::FileSystem()
{
}
const Glib::ustring FileSystem::get_custom_text( CUSTOM_TEXT ttype, int index )
{
return get_generic_text( ttype, index ) ;
}
const Glib::ustring FileSystem::get_generic_text( CUSTOM_TEXT ttype, int index )
{
/*TO TRANSLATORS: these labels will be used in the partition menu */
static const Glib::ustring activate_text = _( "_Mount" ) ;
static const Glib::ustring deactivate_text = _( "_Unmount" ) ;
switch ( ttype ) {
case CTEXT_ACTIVATE_FILESYSTEM :
return index == 0 ? activate_text : "" ;
case CTEXT_DEACTIVATE_FILESYSTEM :
return index == 0 ? deactivate_text : "" ;
default :
return "" ;
}
}
void FileSystem::store_exit_status( GPid pid, int status )
{
exit_status = status;
running = false;
if (pipecount == 0) // pipes finished first
Gtk::Main::quit();
Glib::spawn_close_pid( pid );
}
static void relay_update( OperationDetail *operationdetail, Glib::ustring *str )
{
operationdetail->set_description( *str, FONT_ITALIC );
}
static void cancel_command( bool force, Glib::Pid pid, bool cancel_safe )
{
if( force || cancel_safe )
kill( -pid, SIGINT );
}
static void setup_child()
{
setpgrp();
}
int FileSystem::execute_command( const Glib::ustring & command, OperationDetail & operationdetail,
bool checkstatus, bool cancel_safe )
{
operationdetail .add_child( OperationDetail( command, checkstatus ? STATUS_EXECUTE : STATUS_NONE, FONT_BOLD_ITALIC ) ) ;
Glib::Pid pid;
// set up pipes for capture
int out, err;
// spawn external process
running = true;
try {
Glib::spawn_async_with_pipes(
std::string(),
Glib::shell_parse_argv( command ),
Glib::SPAWN_DO_NOT_REAP_CHILD | Glib::SPAWN_SEARCH_PATH,
sigc::ptr_fun(setup_child),
&pid,
0,
&out,
&err );
} catch (Glib::SpawnError &e) {
std::cerr << e.what() << std::endl;
operationdetail.get_last_child().add_child(
OperationDetail( e.what(), STATUS_ERROR, FONT_ITALIC ) );
return 1;
}
fcntl( out, F_SETFL, O_NONBLOCK );
fcntl( err, F_SETFL, O_NONBLOCK );
Glib::signal_child_watch().connect( sigc::mem_fun( *this, &FileSystem::store_exit_status ), pid );
output.clear();
error.clear();
pipecount = 2;
PipeCapture outputcapture( out, output );
PipeCapture errorcapture( err, error );
outputcapture.eof.connect( sigc::mem_fun( *this, &FileSystem::execute_command_eof ) );
errorcapture.eof.connect( sigc::mem_fun( *this, &FileSystem::execute_command_eof ) );
operationdetail.get_last_child().add_child(
OperationDetail( output, STATUS_NONE, FONT_ITALIC ) );
operationdetail.get_last_child().add_child(
OperationDetail( error, STATUS_NONE, FONT_ITALIC ) );
std::vector<OperationDetail> &children = operationdetail.get_last_child().get_childs();
outputcapture.update.connect( sigc::bind( sigc::ptr_fun( relay_update ),
&(children[children.size() - 2]),
&output ) );
errorcapture.update.connect( sigc::bind( sigc::ptr_fun( relay_update ),
&(children[children.size() - 1]),
&error ) );
outputcapture.connect_signal( out );
errorcapture.connect_signal( err );
operationdetail.get_last_child().signal_cancel.connect(
sigc::bind(
sigc::ptr_fun( cancel_command ),
pid,
cancel_safe ));
Gtk::Main::run();
if (checkstatus) {
if ( !exit_status )
operationdetail.get_last_child().set_status( STATUS_SUCCES );
else
operationdetail.get_last_child().set_status( STATUS_ERROR );
}
close( out );
close( err );
return exit_status;
}
void FileSystem::execute_command_eof()
{
if (--pipecount)
return; // wait for second pipe to eof
if ( !running ) // already got exit status
Gtk::Main::quit();
}
//Create uniquely named temporary directory and add results to operation detail
Glib::ustring FileSystem::mk_temp_dir( const Glib::ustring & infix, OperationDetail & operationdetail )
{
// Construct template like "$TMPDIR/gparted-XXXXXX" or "$TMPDIR/gparted-INFIX-XXXXXX"
Glib::ustring dir_template = Glib::get_tmp_dir() + "/gparted-" ;
if ( ! infix .empty() )
dir_template += infix + "-" ;
dir_template += "XXXXXX" ;
//Secure Programming for Linux and Unix HOWTO, Chapter 6. Avoid Buffer Overflow
// http://tldp.org/HOWTO/Secure-Programs-HOWTO/library-c.html
char dir_buf[4096+1];
sprintf( dir_buf, "%.*s", (int) sizeof(dir_buf)-1, dir_template .c_str() ) ;
//Looks like "mkdir -v" command was run to the user
operationdetail .add_child( OperationDetail(
Glib::ustring( "mkdir -v " ) + dir_buf, STATUS_EXECUTE, FONT_BOLD_ITALIC ) ) ;
const char * dir_name = mkdtemp( dir_buf ) ;
if ( NULL == dir_name )
{
int e = errno ;
operationdetail .get_last_child() .set_status( STATUS_ERROR ) ;
operationdetail .get_last_child() .add_child( OperationDetail(
String::ucompose( "mkdtemp(%1): %2", dir_buf, Glib::strerror( e ) ), STATUS_NONE ) ) ;
dir_name = "" ;
}
else
{
//Update command with actually created temporary directory
operationdetail .get_last_child() .set_description(
Glib::ustring( "mkdir -v " ) + dir_name, FONT_BOLD_ITALIC ) ;
operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ;
operationdetail .get_last_child() .add_child( OperationDetail(
/*TO TRANSLATORS: looks like Created directory /tmp/gparted-CEzvSp */
String::ucompose( _("Created directory %1"), dir_name ), STATUS_NONE ) ) ;
}
return Glib::ustring( dir_name ) ;
}
//Remove directory and add results to operation detail
void FileSystem::rm_temp_dir( const Glib::ustring dir_name, OperationDetail & operationdetail )
{
//Looks like "rmdir -v" command was run to the user
operationdetail .add_child( OperationDetail( Glib::ustring( "rmdir -v " ) + dir_name,
STATUS_EXECUTE, FONT_BOLD_ITALIC ) ) ;
if ( rmdir( dir_name .c_str() ) )
{
//Don't mark operation as errored just because rmdir
// failed. Set to Warning (N/A) instead.
int e = errno ;
operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ; //Stop timer
operationdetail .get_last_child() .set_status( STATUS_N_A ) ;
operationdetail .get_last_child() .add_child( OperationDetail(
String::ucompose( "rmdir(%1): ", dir_name ) + Glib::strerror( e ), STATUS_NONE ) ) ;
}
else
{
operationdetail .get_last_child() .set_status( STATUS_SUCCES ) ;
operationdetail .get_last_child() .add_child( OperationDetail(
/*TO TRANSLATORS: looks like Removed directory /tmp/gparted-CEzvSp */
String::ucompose( _("Removed directory %1"), dir_name ), STATUS_NONE ) ) ;
}
}
} //GParted