diff --git a/src/solid/devices/backends/fstab/fstabhandling.cpp b/src/solid/devices/backends/fstab/fstabhandling.cpp index 5b39b27..63130c6 100644 --- a/src/solid/devices/backends/fstab/fstabhandling.cpp +++ b/src/solid/devices/backends/fstab/fstabhandling.cpp @@ -1,375 +1,317 @@ /* Copyright 2006-2010 Kevin Ottens Copyright 2010 Mario Bensi 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 . */ #include "fstabhandling.h" #include #include #include #include #include #include #include #include #if HAVE_SYS_MNTTAB_H #include #endif #if HAVE_MNTENT_H #include #elif defined(HAVE_SYS_MNTENT_H) #include #endif // This is the *BSD branch #if HAVE_SYS_MOUNT_H #if HAVE_SYS_TYPES_H #include #endif #if HAVE_SYS_PARAM_H #include #endif #include #endif #ifdef Q_OS_SOLARIS #define FSTAB "/etc/vfstab" #else #define FSTAB "/etc/fstab" #endif #if ! 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) #if HAVE_SETMNTENT #define SETMNTENT setmntent #define ENDMNTENT endmntent #define STRUCT_MNTENT struct mntent * #define STRUCT_SETMNTENT FILE * #define GETMNTENT(file, var) ((var = getmntent(file)) != nullptr) #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) == nullptr) #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 Q_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(); globalFstabCache->m_fstabOptionsCache.clear(); #if HAVE_SETMNTENT FILE *fstab; if ((fstab = setmntent(FSTAB, "r")) == nullptr) { return; } struct mntent *fe; while ((fe = getmntent(fstab)) != nullptr) { 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); QStringList options = QFile::decodeName(fe->mnt_opts).split(QLatin1Char(',')); globalFstabCache->m_fstabCache.insert(device, mountpoint); while (!options.isEmpty()) { globalFstabCache->m_fstabOptionsCache.insert(device, options.takeFirst()); } } } 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; } QStringList Solid::Backends::Fstab::FstabHandling::options(const QString &device) { _k_updateFstabMountPointsCache(); QStringList options = globalFstabCache->m_fstabOptionsCache.values(device); return options; } bool Solid::Backends::Fstab::FstabHandling::callSystemCommand(const QString &commandName, const QStringList &args, const QObject *receiver, std::function callback) { QStringList env = QProcess::systemEnvironment(); env.replaceInStrings(QRegExp("^PATH=(.*)", Qt::CaseInsensitive), "PATH=/sbin:/bin:/usr/sbin/:/usr/bin"); QProcess *process = new QProcess(); QObject::connect(process, static_cast(&QProcess::finished), receiver, [process, callback](int exitCode, QProcess::ExitStatus exitStatus) { Q_UNUSED(exitCode); Q_UNUSED(exitStatus); callback(process); process->deleteLater(); }); process->setEnvironment(env); process->start(commandName, args); if (process->waitForStarted()) { return true; } delete process; return false; } void Solid::Backends::Fstab::FstabHandling::_k_updateMtabMountPointsCache() { if (globalFstabCache->m_mtabCacheValid) { return; } globalFstabCache->m_mtabCache.clear(); #if HAVE_GETMNTINFO #if 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++) { QString type = QFile::decodeName(mounted[i].f_fstypename); 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")) == nullptr) { 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; }