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tdeutils/kdf/disklist.cpp

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/*
* disklist.cpp
*
* Copyright (c) 1999 Michael Kropfberger <michael.kropfberger@gmx.net>
*
* Requires the TQt widget libraries, available at no cost at
* http://www.troll.no/
*
* 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <math.h>
#include <stdlib.h>
#include <kdebug.h>
#include <kapplication.h>
#include "disklist.h"
#define BLANK ' '
#define DELIMITER '#'
#define FULL_PERCENT 95.0
/***************************************************************************
* constructor
**/
DiskList::DiskList(TQObject *parent, const char *name)
: TQObject(parent,name)
{
kdDebug() << k_funcinfo << endl;
updatesDisabled = false;
if (NO_FS_TYPE) {
kdDebug() << "df gives no FS_TYPE" << endl;
}
disks = new Disks;
disks->setAutoDelete(TRUE);
// BackgroundProcesses ****************************************
dfProc = new KProcess(); Q_CHECK_PTR(dfProc);
connect( dfProc, TQT_SIGNAL(receivedStdout(KProcess *, char *, int) ),
this, TQT_SLOT (receivedDFStdErrOut(KProcess *, char *, int)) );
connect(dfProc,TQT_SIGNAL(processExited(KProcess *) ),
this, TQT_SLOT(dfDone() ) );
readingDFStdErrOut=FALSE;
config = kapp->config();
loadSettings();
}
/***************************************************************************
* destructor
**/
DiskList::~DiskList()
{
kdDebug() << k_funcinfo << endl;
}
/**
Updated need to be disabled sometimes to avoid pulling the DiskEntry out from the popupmenu handler
*/
void DiskList::setUpdatesDisabled(bool disable)
{
updatesDisabled = disable;
}
/***************************************************************************
* saves the KConfig for special mount/umount scripts
**/
void DiskList::applySettings()
{
kdDebug() << k_funcinfo << endl;
TQString oldgroup=config->group();
config->setGroup("DiskList");
TQString key;
DiskEntry *disk;
for (disk=disks->first();disk!=0;disk=disks->next()) {
key.sprintf("Mount%s%s%s%s",SEPARATOR,disk->deviceName().latin1()
,SEPARATOR,disk->mountPoint().latin1());
config->writePathEntry(key,disk->mountCommand());
key.sprintf("Umount%s%s%s%s",SEPARATOR,disk->deviceName().latin1()
,SEPARATOR,disk->mountPoint().latin1());
config->writePathEntry(key,disk->umountCommand());
key.sprintf("Icon%s%s%s%s",SEPARATOR,disk->deviceName().latin1()
,SEPARATOR,disk->mountPoint().latin1());
config->writePathEntry(key,disk->realIconName());
}
config->sync();
config->setGroup(oldgroup);
}
/***************************************************************************
* reads the KConfig for special mount/umount scripts
**/
void DiskList::loadSettings()
{
kdDebug() << k_funcinfo << endl;
config->setGroup("DiskList");
TQString key;
DiskEntry *disk;
for (disk=disks->first();disk!=0;disk=disks->next()) {
key.sprintf("Mount%s%s%s%s",SEPARATOR,disk->deviceName().latin1()
,SEPARATOR,disk->mountPoint().latin1());
disk->setMountCommand(config->readPathEntry(key));
key.sprintf("Umount%s%s%s%s",SEPARATOR,disk->deviceName().latin1()
,SEPARATOR,disk->mountPoint().latin1());
disk->setUmountCommand(config->readPathEntry(key));
key.sprintf("Icon%s%s%s%s",SEPARATOR,disk->deviceName().latin1()
,SEPARATOR,disk->mountPoint().latin1());
TQString icon=config->readPathEntry(key);
if (!icon.isEmpty()) disk->setIconName(icon);
}
}
static TQString expandEscapes(const TQString& s) {
TQString rc;
for (unsigned int i = 0; i < s.length(); i++) {
if (s[i] == '\\') {
i++;
switch(s[i]) {
case '\\': // backslash '\'
rc += '\\';
break;
case '0': // octal 0nn
rc += static_cast<char>(s.mid(i,3).toInt(0, 8));
i += 2;
break;
default:
// give up and not process anything else because I'm too lazy
// to implement other escapes
rc += '\\';
rc += s[i];
break;
}
} else {
rc += s[i];
}
}
return rc;
}
/***************************************************************************
* tries to figure out the possibly mounted fs
**/
int DiskList::readFSTAB()
{
kdDebug() << k_funcinfo << endl;
if (readingDFStdErrOut || dfProc->isRunning()) return -1;
TQFile f(FSTAB);
if ( f.open(IO_ReadOnly) ) {
TQTextStream t (&f);
TQString s;
DiskEntry *disk;
//disks->clear(); // ############
while (! t.eof()) {
s=t.readLine();
s=s.simplifyWhiteSpace();
if ( (!s.isEmpty() ) && (s.find(DELIMITER)!=0) ) {
// not empty or commented out by '#'
// kdDebug() << "GOT: [" << s << "]" << endl;
disk = new DiskEntry();// Q_CHECK_PTR(disk);
disk->setMounted(FALSE);
disk->setDeviceName(expandEscapes(s.left(s.find(BLANK))));
s=s.remove(0,s.find(BLANK)+1 );
// kdDebug() << " deviceName: [" << disk->deviceName() << "]" << endl;
#ifdef _OS_SOLARIS_
//device to fsck
s=s.remove(0,s.find(BLANK)+1 );
#endif
disk->setMountPoint(expandEscapes(s.left(s.find(BLANK))));
s=s.remove(0,s.find(BLANK)+1 );
//kdDebug() << " MountPoint: [" << disk->mountPoint() << "]" << endl;
//kdDebug() << " Icon: [" << disk->iconName() << "]" << endl;
disk->setFsType(s.left(s.find(BLANK)) );
s=s.remove(0,s.find(BLANK)+1 );
//kdDebug() << " FS-Type: [" << disk->fsType() << "]" << endl;
disk->setMountOptions(s.left(s.find(BLANK)) );
s=s.remove(0,s.find(BLANK)+1 );
//kdDebug() << " Mount-Options: [" << disk->mountOptions() << "]" << endl;
if ( (disk->deviceName() != "none")
&& (disk->fsType() != "swap")
&& (disk->fsType() != "sysfs")
&& (disk->mountPoint() != "/dev/swap")
&& (disk->mountPoint() != "/dev/pts")
&& (disk->mountPoint() != "/dev/shm")
&& (disk->mountPoint().find("/proc") == -1 ) )
replaceDeviceEntry(disk);
else
delete disk;
} //if not empty
} //while
f.close();
} //if f.open
loadSettings(); //to get the mountCommands
// kdDebug() << "DiskList::readFSTAB DONE" << endl;
return 1;
}
/***************************************************************************
* is called, when the df-command writes on StdOut or StdErr
**/
void DiskList::receivedDFStdErrOut(KProcess *, char *data, int len )
{
kdDebug() << k_funcinfo << endl;
/* ATTENTION: StdERR no longer connected to this...
* Do we really need StdErr?? on HP-UX there was eg. a line
* df: /home_tu1/ijzerman/floppy: Stale NFS file handle
* but this shouldn't cause a real problem
*/
TQString tmp = TQString::fromLatin1(data, len);
dfStringErrOut.append(tmp);
}
/***************************************************************************
* reads the df-commands results
**/
int DiskList::readDF()
{
kdDebug() << k_funcinfo << endl;
if (readingDFStdErrOut || dfProc->isRunning()) return -1;
setenv("LANG", "en_US", 1);
setenv("LC_ALL", "en_US", 1);
setenv("LC_MESSAGES", "en_US", 1);
setenv("LC_TYPE", "en_US", 1);
setenv("LANGUAGE", "en_US", 1);
dfStringErrOut=""; // yet no data received
dfProc->clearArguments();
(*dfProc) << "env" << "LC_ALL=POSIX" << DF_COMMAND << DF_ARGS;
if (!dfProc->start( KProcess::NotifyOnExit, KProcess::AllOutput ))
qFatal(i18n("could not execute [%s]").local8Bit().data(), DF_COMMAND);
return 1;
}
/***************************************************************************
* is called, when the df-command has finished
**/
void DiskList::dfDone()
{
kdDebug() << k_funcinfo << endl;
if (updatesDisabled)
return; //Don't touch the data for now..
readingDFStdErrOut=TRUE;
for ( DiskEntry *disk=disks->first(); disk != 0; disk=disks->next() )
disk->setMounted(FALSE); // set all devs unmounted
TQTextStream t (dfStringErrOut, IO_ReadOnly);
TQString s=t.readLine();
if ( ( s.isEmpty() ) || ( s.left(10) != "Filesystem" ) )
qFatal("Error running df command... got [%s]",s.latin1());
while ( !t.atEnd() ) {
TQString u,v;
DiskEntry *disk;
s=t.readLine();
s=s.simplifyWhiteSpace();
if ( !s.isEmpty() ) {
disk = new DiskEntry(); Q_CHECK_PTR(disk);
if (s.find(BLANK)<0) // devicename was too long, rest in next line
if ( !t.eof() ) { // just appends the next line
v=t.readLine();
s=s.append(v.latin1() );
s=s.simplifyWhiteSpace();
//kdDebug() << "SPECIAL GOT: [" << s << "]" << endl;
}//if silly linefeed
//kdDebug() << "EFFECTIVELY GOT " << s.length() << " chars: [" << s << "]" << endl;
disk->setDeviceName(s.left(s.find(BLANK)) );
s=s.remove(0,s.find(BLANK)+1 );
//kdDebug() << " DeviceName: [" << disk->deviceName() << "]" << endl;
if (NO_FS_TYPE) {
//kdDebug() << "THERE IS NO FS_TYPE_FIELD!" << endl;
disk->setFsType("?");
} else {
disk->setFsType(s.left(s.find(BLANK)) );
s=s.remove(0,s.find(BLANK)+1 );
};
//kdDebug() << " FS-Type: [" << disk->fsType() << "]" << endl;
//kdDebug() << " Icon: [" << disk->iconName() << "]" << endl;
u=s.left(s.find(BLANK));
disk->setKBSize(u.toInt() );
s=s.remove(0,s.find(BLANK)+1 );
//kdDebug() << " Size: [" << disk->kBSize() << "]" << endl;
u=s.left(s.find(BLANK));
disk->setKBUsed(u.toInt() );
s=s.remove(0,s.find(BLANK)+1 );
//kdDebug() << " Used: [" << disk->kBUsed() << "]" << endl;
u=s.left(s.find(BLANK));
disk->setKBAvail(u.toInt() );
s=s.remove(0,s.find(BLANK)+1 );
//kdDebug() << " Avail: [" << disk->kBAvail() << "]" << endl;
s=s.remove(0,s.find(BLANK)+1 ); // delete the capacity 94%
disk->setMountPoint(s);
//kdDebug() << " MountPoint: [" << disk->mountPoint() << "]" << endl;
if ( (disk->kBSize() > 0)
&& (disk->deviceName() != "none")
&& (disk->fsType() != "swap")
&& (disk->fsType() != "sysfs")
&& (disk->mountPoint() != "/dev/swap")
&& (disk->mountPoint() != "/dev/pts")
&& (disk->mountPoint() != "/dev/shm")
&& (disk->mountPoint().find("/proc") == -1 ) ) {
disk->setMounted(TRUE); // its now mounted (df lists only mounted)
replaceDeviceEntry(disk);
} else
delete disk;
}//if not header
}//while further lines available
readingDFStdErrOut=FALSE;
loadSettings(); //to get the mountCommands
emit readDFDone();
}
void DiskList::deleteAllMountedAt(const TQString &mountpoint)
{
kdDebug() << k_funcinfo << endl;
for ( DiskEntry *item = disks->first(); item; )
{
if (item->mountPoint() == mountpoint ) {
kdDebug() << "delete " << item->deviceName() << endl;
disks->remove(item);
item = disks->current();
} else
item = disks->next();
}
}
/***************************************************************************
* updates or creates a new DiskEntry in the KDFList and TabListBox
**/
void DiskList::replaceDeviceEntry(DiskEntry *disk)
{
//kdDebug() << k_funcinfo << disk->deviceRealName() << " " << disk->realMountPoint() << endl;
//
// The 'disks' may already already contain the 'disk'. If it do
// we will replace some data. Otherwise 'disk' will be added to the list
//
//
// 1999-27-11 Espen Sand:
// I can't get find() to work. The Disks::compareItems(..) is
// never called.
//
//int pos=disks->find(disk);
TQString deviceRealName = disk->deviceRealName();
TQString realMountPoint = disk->realMountPoint();
int pos = -1;
for( u_int i=0; i<disks->count(); i++ )
{
DiskEntry *item = disks->at(i);
int res = deviceRealName.compare( item->deviceRealName() );
if( res == 0 )
{
res = realMountPoint.compare( item->realMountPoint() );
}
if( res == 0 )
{
pos = i;
break;
}
}
if ((pos == -1) && (disk->mounted()) )
// no matching entry found for mounted disk
if ((disk->fsType() == "?") || (disk->fsType() == "cachefs")) {
//search for fitting cachefs-entry in static /etc/vfstab-data
DiskEntry* olddisk = disks->first();
while (olddisk != 0) {
int p;
// cachefs deviceNames have no / behind the host-column
// eg. /cache/cache/.cfs_mnt_points/srv:_home_jesus
// ^ ^
TQString odiskName = olddisk->deviceName();
int ci=odiskName.find(':'); // goto host-column
while ((ci =odiskName.find('/',ci)) > 0) {
odiskName.replace(ci,1,"_");
}//while
// check if there is something that is exactly the tail
// eg. [srv:/tmp3] is exact tail of [/cache/.cfs_mnt_points/srv:_tmp3]
if ( ( (p=disk->deviceName().findRev(odiskName
,disk->deviceName().length()) )
!= -1)
&& (p + odiskName.length()
== disk->deviceName().length()) )
{
pos = disks->at(); //store the actual position
disk->setDeviceName(olddisk->deviceName());
olddisk=0;
} else
olddisk=disks->next();
}// while
}// if fsType == "?" or "cachefs"
#ifdef NO_FS_TYPE
if (pos != -1) {
DiskEntry * olddisk = disks->at(pos);
if (olddisk)
disk->setFsType(olddisk->fsType());
}
#endif
if (pos != -1) { // replace
DiskEntry * olddisk = disks->at(pos);
if ( (-1!=olddisk->mountOptions().find("user")) &&
(-1==disk->mountOptions().find("user")) ) {
// add "user" option to new diskEntry
TQString s=disk->mountOptions();
if (s.length()>0) s.append(",");
s.append("user");
disk->setMountOptions(s);
}
disk->setMountCommand(olddisk->mountCommand());
disk->setUmountCommand(olddisk->umountCommand());
// Same device name, but maybe one is a symlink and the other is its target
// Keep the shorter one then, /dev/hda1 looks better than /dev/ide/host0/bus0/target0/lun0/part1
if ( disk->deviceName().length() > olddisk->deviceName().length() )
disk->setDeviceName(olddisk->deviceName());
//FStab after an older DF ... needed for critFull
//so the DF-KBUsed survive a FStab lookup...
//but also an unmounted disk may then have a kbused set...
if ( (olddisk->mounted()) && (!disk->mounted()) ) {
disk->setKBSize(olddisk->kBSize());
disk->setKBUsed(olddisk->kBUsed());
disk->setKBAvail(olddisk->kBAvail());
}
if ( (olddisk->percentFull() != -1) &&
(olddisk->percentFull() < FULL_PERCENT) &&
(disk->percentFull() >= FULL_PERCENT) ) {
kdDebug() << "Device " << disk->deviceName()
<< " is critFull! " << olddisk->percentFull()
<< "--" << disk->percentFull() << endl;
emit criticallyFull(disk);
}
disks->remove(pos); // really deletes old one
disks->insert(pos,disk);
} else {
disks->append(disk);
}//if
}
#include "disklist.moc"
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