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/*
Copyright 2006-2010 Kevin Ottens <ervin@kde.org>
Copyright 2010 Mario Bensi <mbensi@ipsquad.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) version 3, or any
later version accepted by the membership of KDE e.V. (or its
successor approved by the membership of KDE e.V.), which shall
act as a proxy defined in Section 6 of version 3 of the license.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "fstabhandling.h"
#include <QtCore/QFile>
#include <QtCore/QObject>
#include <QtCore/QProcess>
#include <QtCore/QTextStream>
#include <QtCore/QTime>
#include <solid/soliddefs_p.h>
#include <config.h>
#include <stdlib.h>
/* HACK, make it use setmntent/getmntent */
#ifdef __FreeBSD_kernel__
# undef HAVE_GETMNTINFO
#endif
#ifdef HAVE_SYS_MNTTAB_H
#include <sys/mnttab.h>
#endif
#ifdef HAVE_MNTENT_H
#include <mntent.h>
#elif defined(HAVE_SYS_MNTENT_H)
#include <sys/mntent.h>
#endif
// This is the *BSD branch
#ifdef HAVE_SYS_MOUNT_H
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/mount.h>
#endif
#ifdef Q_OS_SOLARIS
#define FSTAB "/etc/vfstab"
#else
#define FSTAB "/etc/fstab"
#endif
#ifndef HAVE_GETMNTINFO
# ifdef _PATH_MOUNTED
// On some Linux, MNTTAB points to /etc/fstab !
# undef MNTTAB
# define MNTTAB _PATH_MOUNTED
# else
# ifndef MNTTAB
# ifdef MTAB_FILE
# define MNTTAB MTAB_FILE
# else
# define MNTTAB "/etc/mnttab"
# endif
# endif
# endif
#endif
// There are (at least) four kind of APIs:
// setmntent + getmntent + struct mntent (linux...)
// getmntent + struct mnttab
// mntctl + struct vmount (AIX)
// getmntinfo + struct statfs&flags (BSD 4.4 and friends)
// getfsent + char* (BSD 4.3 and friends)
#ifdef HAVE_SETMNTENT
#define SETMNTENT setmntent
#define ENDMNTENT endmntent
#define STRUCT_MNTENT struct mntent *
#define STRUCT_SETMNTENT FILE *
#define GETMNTENT(file, var) ((var = getmntent(file)) != 0)
#define MOUNTPOINT(var) var->mnt_dir
#define MOUNTTYPE(var) var->mnt_type
#define MOUNTOPTIONS(var) var->mnt_opts
#define FSNAME(var) var->mnt_fsname
#else
#define SETMNTENT fopen
#define ENDMNTENT fclose
#define STRUCT_MNTENT struct mnttab
#define STRUCT_SETMNTENT FILE *
#define GETMNTENT(file, var) (getmntent(file, &var) == 0)
#define MOUNTPOINT(var) var.mnt_mountp
#define MOUNTTYPE(var) var.mnt_fstype
#define MOUNTOPTIONS(var) var.mnt_mntopts
#define FSNAME(var) var.mnt_special
#endif
SOLID_GLOBAL_STATIC(Solid::Backends::Fstab::FstabHandling, globalFstabCache)
Solid::Backends::Fstab::FstabHandling::FstabHandling()
: m_fstabCacheValid(false),
m_mtabCacheValid(false)
{ }
bool _k_isFstabNetworkFileSystem(const QString &fstype, const QString &devName)
{
if (fstype == "nfs"
|| fstype == "nfs4"
|| fstype == "smbfs"
|| fstype == "cifs"
|| devName.startsWith(QLatin1String("//"))) {
return true;
}
return false;
}
void Solid::Backends::Fstab::FstabHandling::_k_updateFstabMountPointsCache()
{
if (globalFstabCache->m_fstabCacheValid)
return;
globalFstabCache->m_fstabCache.clear();
#ifdef HAVE_SETMNTENT
FILE *fstab;
if ((fstab = setmntent(FSTAB, "r")) == 0) {
return;
}
struct mntent *fe;
while ((fe = getmntent(fstab)) != 0) {
if (_k_isFstabNetworkFileSystem(fe->mnt_type, fe->mnt_fsname)) {
const QString device = QFile::decodeName(fe->mnt_fsname);
const QString mountpoint = QFile::decodeName(fe->mnt_dir);
globalFstabCache->m_fstabCache.insert(device, mountpoint);
}
}
endmntent(fstab);
#else
QFile fstab(FSTAB);
if (!fstab.open(QIODevice::ReadOnly)) {
return;
}
QTextStream stream(&fstab);
QString line;
while (!stream.atEnd()) {
line = stream.readLine().simplified();
if (line.isEmpty() || line.startsWith('#')) {
continue;
}
// not empty or commented out by '#'
const QStringList items = line.split(' ');
#ifdef Q_OS_SOLARIS
if (items.count() < 5) {
continue;
}
#else
if (items.count() < 4) {
continue;
}
#endif
//prevent accessing a blocking directory
if (_k_isFstabNetworkFileSystem(items.at(2), items.at(0))) {
const QString device = items.at(0);
const QString mountpoint = items.at(1);
globalFstabCache->m_fstabCache.insert(device, mountpoint);
}
}
fstab.close();
#endif
globalFstabCache->m_fstabCacheValid = true;
}
QStringList Solid::Backends::Fstab::FstabHandling::deviceList()
{
_k_updateFstabMountPointsCache();
_k_updateMtabMountPointsCache();
QStringList devices = globalFstabCache->m_fstabCache.keys();
devices += globalFstabCache->m_mtabCache.keys();
devices.removeDuplicates();
return devices;
}
QStringList Solid::Backends::Fstab::FstabHandling::mountPoints(const QString &device)
{
_k_updateFstabMountPointsCache();
_k_updateMtabMountPointsCache();
QStringList mountpoints = globalFstabCache->m_fstabCache.values(device);
mountpoints += globalFstabCache->m_mtabCache.values(device);
mountpoints.removeDuplicates();
return mountpoints;
}
QProcess *Solid::Backends::Fstab::FstabHandling::callSystemCommand(const QString &commandName,
const QStringList &args,
QObject *obj, const char *slot)
{
QStringList env = QProcess::systemEnvironment();
env.replaceInStrings(QRegExp("^PATH=(.*)", Qt::CaseInsensitive), "PATH=/sbin:/bin:/usr/sbin/:/usr/bin");
QProcess *process = new QProcess(obj);
QObject::connect(process, SIGNAL(finished(int,QProcess::ExitStatus)),
obj, slot);
process->setEnvironment(env);
process->start(commandName, args);
if (process->waitForStarted()) {
return process;
} else {
delete process;
return 0;
}
}
QProcess *Solid::Backends::Fstab::FstabHandling::callSystemCommand(const QString &commandName,
const QString &device,
QObject *obj, const char *slot)
{
return callSystemCommand(commandName, QStringList() << device, obj, slot);
}
void Solid::Backends::Fstab::FstabHandling::_k_updateMtabMountPointsCache()
{
if (globalFstabCache->m_mtabCacheValid)
return;
globalFstabCache->m_mtabCache.clear();
#ifdef HAVE_GETMNTINFO
#ifdef GETMNTINFO_USES_STATVFS
struct statvfs *mounted;
#else
struct statfs *mounted;
#endif
int num_fs = getmntinfo(&mounted, MNT_NOWAIT);
for (int i=0;i< num_fs;i++)
{
#ifdef __osf__
QString type = QFile::decodeName(mnt_names[mounted[i].f_type]);
#else
QString type = QFile::decodeName(mounted[i].f_fstypename);
#endif
if (_k_isFstabNetworkFileSystem(type, QString())) {
const QString device = QFile::decodeName(mounted[i].f_mntfromname);
const QString mountpoint = QFile::decodeName(mounted[i].f_mntonname);
globalFstabCache->m_mtabCache.insert(device, mountpoint);
}
}
#elif defined(_AIX)
struct vmount *mntctl_buffer;
struct vmount *vm;
char *mountedfrom;
char *mountedto;
int fsname_len, num;
int buf_sz = 4096;
mntctl_buffer = (struct vmount*)malloc(buf_sz);
num = mntctl(MCTL_QUERY, buf_sz, mntctl_buffer);
if (num == 0)
{
buf_sz = *(int*)mntctl_buffer;
free(mntctl_buffer);
mntctl_buffer = (struct vmount*)malloc(buf_sz);
num = mntctl(MCTL_QUERY, buf_sz, mntctl_buffer);
}
if (num > 0)
{
/* iterate through items in the vmount structure: */
vm = (struct vmount *)mntctl_buffer;
for ( ; num > 0; --num )
{
/* get the name of the mounted file systems: */
fsname_len = vmt2datasize(vm, VMT_STUB);
mountedto = (char*)malloc(fsname_len + 1);
mountedto[fsname_len] = '\0';
strncpy(mountedto, (char *)vmt2dataptr(vm, VMT_STUB), fsname_len);
fsname_len = vmt2datasize(vm, VMT_OBJECT);
mountedfrom = (char*)malloc(fsname_len + 1);
mountedfrom[fsname_len] = '\0';
strncpy(mountedfrom, (char *)vmt2dataptr(vm, VMT_OBJECT), fsname_len);
/* Look up the string for the file system type,
* as listed in /etc/vfs.
* ex.: nfs,jfs,afs,cdrfs,sfs,cachefs,nfs3,autofs
*/
struct vfs_ent* ent = getvfsbytype(vm->vmt_gfstype);
QString type = QFile::decodeName(ent->vfsent_name);
if (_k_isFstabNetworkFileSystem(type, QString())) {
const QString device = QFile::decodeName(mountedfrom);
const QString mountpoint = QFile::decodeName(mountedto);
globalFstabCache->m_mtabCache.insert(device, mountpoint);
}
free(mountedfrom);
free(mountedto);
/* goto the next vmount structure: */
vm = (struct vmount *)((char *)vm + vm->vmt_length);
}
endvfsent( );
}
free( mntctl_buffer );
#else
STRUCT_SETMNTENT mnttab;
if ((mnttab = SETMNTENT(MNTTAB, "r")) == 0)
return;
STRUCT_MNTENT fe;
while (GETMNTENT(mnttab, fe))
{
QString type = QFile::decodeName(MOUNTTYPE(fe));
if (_k_isFstabNetworkFileSystem(type, QString())) {
const QString device = QFile::decodeName(FSNAME(fe));
const QString mountpoint = QFile::decodeName(MOUNTPOINT(fe));
globalFstabCache->m_mtabCache.insert(device, mountpoint);
}
}
ENDMNTENT(mnttab);
#endif
globalFstabCache->m_mtabCacheValid = true;
}
QStringList Solid::Backends::Fstab::FstabHandling::currentMountPoints(const QString &device)
{
_k_updateMtabMountPointsCache();
return globalFstabCache->m_mtabCache.values(device);
}
void Solid::Backends::Fstab::FstabHandling::flushMtabCache()
{
globalFstabCache->m_mtabCacheValid = false;
}
void Solid::Backends::Fstab::FstabHandling::flushFstabCache()
{
globalFstabCache->m_fstabCacheValid = false;
}
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