kdecore Library API Documentation

kmountpoint.cpp

00001 /*
00002  *
00003  *  This file is part of the KDE libraries
00004  *  Copyright (c) 2003 Waldo Bastian <bastian@kde.org>
00005  *
00006  * $Id: kmountpoint.cpp,v 1.8 2003/09/13 11:18:31 coolo Exp $
00007  *
00008  *  This library is free software; you can redistribute it and/or
00009  *  modify it under the terms of the GNU Library General Public
00010  *  License version 2 as published by the Free Software Foundation.
00011  *
00012  *  This library is distributed in the hope that it will be useful,
00013  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  *  Library General Public License for more details.
00016  *
00017  *  You should have received a copy of the GNU Library General Public License
00018  *  along with this library; see the file COPYING.LIB.  If not, write to
00019  *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00020  *  Boston, MA 02111-1307, USA.
00021  **/
00022 
00023 #include <config.h>
00024 #include <stdlib.h>
00025 
00026 #include <qfile.h>
00027 
00028 #include "kstandarddirs.h"
00029 
00030 #include "kmountpoint.h"
00031 
00032 #ifdef HAVE_VOLMGT
00033 #include <volmgt.h>
00034 #endif
00035 #ifdef HAVE_SYS_MNTTAB_H
00036 #include <sys/mnttab.h>
00037 #endif
00038 #ifdef HAVE_MNTENT_H
00039 #include <mntent.h>
00040 #elif HAVE_SYS_MNTENT_H
00041 #include <sys/mntent.h>
00042 #endif
00043 
00044 // This is the *BSD branch
00045 #ifdef HAVE_SYS_MOUNT_H
00046 #ifdef HAVE_SYS_TYPES_H
00047 #include <sys/types.h>
00048 #endif
00049 #ifdef HAVE_SYS_PARAM_H
00050 #include <sys/param.h>
00051 #endif
00052 #include <sys/mount.h>
00053 #endif
00054 
00055 #ifdef HAVE_FSTAB_H
00056 #include <fstab.h>
00057 #endif
00058 #if defined(_AIX)
00059 #include <sys/mntctl.h>
00060 #include <sys/vmount.h>
00061 #include <sys/vfs.h>
00062 /* AIX does not prototype mntctl anywhere that I can find */
00063 #ifndef mntctl
00064 extern "C" {
00065 int mntctl(int command, int size, void* buffer);
00066 }
00067 #endif
00068 extern "C" struct vfs_ent *getvfsbytype(int vfsType);
00069 extern "C" void endvfsent( );
00070 #endif
00071 
00072 
00073 #ifndef HAVE_GETMNTINFO
00074 # ifdef _PATH_MOUNTED
00075 // On some Linux, MNTTAB points to /etc/fstab !
00076 #  undef MNTTAB
00077 #  define MNTTAB _PATH_MOUNTED
00078 # else
00079 #  ifndef MNTTAB
00080 #   ifdef MTAB_FILE
00081 #    define MNTTAB MTAB_FILE
00082 #   else
00083 #    define MNTTAB "/etc/mnttab"
00084 #   endif
00085 #  endif
00086 # endif
00087 #endif
00088 
00089 
00090 
00091 #ifdef _OS_SOLARIS_
00092 #define FSTAB "/etc/vfstab"
00093 #else
00094 #define FSTAB "/etc/fstab"
00095 #endif
00096 
00097 
00098 
00099 KMountPoint::KMountPoint()
00100 {
00101 }
00102 
00103 KMountPoint::~KMountPoint()
00104 {
00105 }
00106 
00107 #ifdef HAVE_SETMNTENT
00108 #define SETMNTENT setmntent
00109 #define ENDMNTENT endmntent
00110 #define STRUCT_MNTENT struct mntent *
00111 #define STRUCT_SETMNTENT FILE *
00112 #define GETMNTENT(file, var) ((var = getmntent(file)) != 0)
00113 #define MOUNTPOINT(var) var->mnt_dir
00114 #define MOUNTTYPE(var) var->mnt_type
00115 #define MOUNTOPTIONS(var) var->mnt_opts
00116 #define FSNAME(var) var->mnt_fsname
00117 #else
00118 #define SETMNTENT fopen
00119 #define ENDMNTENT fclose
00120 #define STRUCT_MNTENT struct mnttab
00121 #define STRUCT_SETMNTENT FILE *
00122 #define GETMNTENT(file, var) (getmntent(file, &var) == 0)
00123 #define MOUNTPOINT(var) var.mnt_mountp
00124 #define MOUNTTYPE(var) var.mnt_fstype
00125 #define MOUNTOPTIONS(var) var.mnt_mntopts
00126 #define FSNAME(var) var.mnt_special
00127 #endif
00128 
00129 KMountPoint::List KMountPoint::possibleMountPoints(int infoNeeded)
00130 {
00131   KMountPoint::List result;
00132   
00133 #ifdef HAVE_SETMNTENT
00134    STRUCT_SETMNTENT fstab;
00135    if ((fstab = SETMNTENT(FSTAB, "r")) == 0)
00136       return result;
00137 
00138    STRUCT_MNTENT fe;
00139    while (GETMNTENT(fstab, fe))
00140    {
00141       KMountPoint *mp = new KMountPoint();
00142       mp->m_mountedFrom = QFile::decodeName(FSNAME(fe));
00143          
00144       mp->m_mountPoint = QFile::decodeName(MOUNTPOINT(fe));
00145       mp->m_mountType = QFile::decodeName(MOUNTTYPE(fe));
00146       if (infoNeeded & NeedMountOptions)
00147       {
00148          QString options = QFile::decodeName(MOUNTOPTIONS(fe));
00149          mp->m_mountOptions = QStringList::split(',', options);
00150       }
00151 
00152       if (infoNeeded & NeedRealDeviceName)
00153       {
00154          if (mp->m_mountedFrom.startsWith("/"))
00155             mp->m_device = KStandardDirs::realPath(mp->m_mountedFrom);
00156       }
00157       // TODO: Strip trailing '/' ?
00158       result.append(mp);
00159    }
00160    ENDMNTENT(fstab);
00161 #else
00162    QFile f(FSTAB);
00163    if ( !f.open(IO_ReadOnly) )
00164       return result;
00165      
00166    QTextStream t (&f);
00167    QString s;
00168 
00169    while (! t.eof()) 
00170    {
00171       s=t.readLine().simplifyWhiteSpace();
00172       if ( s.isEmpty() || (s[0] == '#'))
00173           continue;
00174 
00175       // not empty or commented out by '#'
00176       QStringList item = QStringList::split(' ', s);
00177         
00178 #ifdef _OS_SOLARIS_
00179       if (item.count() < 5)
00180          continue;
00181 #else
00182       if (item.count() < 4)
00183          continue;
00184 #endif
00185 
00186       KMountPoint *mp = new KMountPoint();
00187 
00188       int i = 0;
00189       mp->m_mountedFrom = item[i++];
00190 #ifdef _OS_SOLARIS_
00191       //device to fsck
00192       i++;
00193 #endif
00194       mp->m_mountPoint = item[i++];
00195       mp->m_mountType = item[i++];
00196       QString options = item[i++];
00197       if (infoNeeded & NeedMountOptions)
00198       {
00199          mp->m_mountOptions = QStringList::split(',', options);
00200       }
00201 
00202       if (infoNeeded & NeedRealDeviceName)
00203       {
00204          if (mp->m_mountedFrom.startsWith("/"))
00205             mp->m_device = KStandardDirs::realPath(mp->m_mountedFrom);
00206       }
00207       // TODO: Strip trailing '/' ?
00208       result.append(mp);
00209    } //while
00210 
00211    f.close();
00212 #endif
00213    return result;
00214 }
00215 
00216 KMountPoint::List KMountPoint::currentMountPoints(int infoNeeded)
00217 {
00218   KMountPoint::List result;
00219 
00220 #ifdef HAVE_GETMNTINFO
00221 
00222     struct statfs *mounted;
00223 
00224     int num_fs = getmntinfo(&mounted, MNT_NOWAIT);
00225 
00226     for (int i=0;i<num_fs;i++) 
00227     {
00228       KMountPoint *mp = new KMountPoint();
00229       mp->m_mountedFrom = QFile::decodeName(mounted[i].f_mntfromname);
00230       mp->m_mountPoint = QFile::decodeName(mounted[i].f_mntonname);
00231 
00232 #ifdef __osf__
00233       mp->m_mountType = QFile::decodeName(mnt_names[mounted[i].f_type]);
00234 #else
00235       mp->m_mountType = QFile::decodeName(mounted[i].f_fstypename);
00236 #endif      
00237 
00238       if (infoNeeded & NeedMountOptions)
00239       {
00240          struct fstab *ft = getfsfile(mounted[i].f_mntonname);
00241          QString options = QFile::decodeName(ft->fs_mntops);
00242          mp->m_mountOptions = QStringList::split(',', options);
00243       }
00244 
00245       if (infoNeeded & NeedRealDeviceName)
00246       {
00247          if (mp->m_mountedFrom.startsWith("/"))
00248             mp->m_device = KStandardDirs::realPath(mp->m_mountedFrom);
00249       }
00250       // TODO: Strip trailing '/' ?
00251       result.append(mp);
00252    }
00253 
00254 #elif defined(_AIX)
00255 
00256     struct vmount *mntctl_buffer;
00257     struct vmount *vm;
00258     char *mountedfrom;
00259     char *mountedto;
00260     int fsname_len, num;
00261     int buf_sz = 4096;
00262 
00263     mntctl_buffer = (struct vmount*)malloc(buf_sz);
00264     num = mntctl(MCTL_QUERY, buf_sz, mntctl_buffer);
00265     if (num == 0)
00266     {
00267     buf_sz = *(int*)mntctl_buffer;
00268     free(mntctl_buffer);
00269     mntctl_buffer = (struct vmount*)malloc(buf_sz);
00270     num = mntctl(MCTL_QUERY, buf_sz, mntctl_buffer);
00271     }
00272 
00273     if (num > 0)
00274     {
00275         /* iterate through items in the vmount structure: */
00276         vm = (struct vmount *)mntctl_buffer;
00277         for ( ; num > 0; num-- )
00278         {
00279             /* get the name of the mounted file systems: */
00280             fsname_len = vmt2datasize(vm, VMT_STUB);
00281             mountedto     = (char*)malloc(fsname_len + 1);
00282         mountedto[fsname_len] = '\0';
00283             strncpy(mountedto, (char *)vmt2dataptr(vm, VMT_STUB), fsname_len);
00284 
00285             fsname_len = vmt2datasize(vm, VMT_OBJECT);
00286             mountedfrom     = (char*)malloc(fsname_len + 1);
00287         mountedfrom[fsname_len] = '\0';
00288             strncpy(mountedfrom, (char *)vmt2dataptr(vm, VMT_OBJECT), fsname_len);
00289 
00290         /* Look up the string for the file system type,
00291              * as listed in /etc/vfs.
00292              * ex.: nfs,jfs,afs,cdrfs,sfs,cachefs,nfs3,autofs
00293              */
00294             struct vfs_ent* ent = getvfsbytype(vm->vmt_gfstype);
00295 
00296             KMountPoint *mp = new KMountPoint();
00297             mp->m_mountedFrom = QFile::decodeName(mountedfrom);
00298             mp->m_mountPoint = QFile::decodeName(mountedto);
00299             mp->m_mountType = QFile::decodeName(ent->vfsent_name);
00300 
00301             free(mountedfrom);
00302             free(mountedto);
00303 
00304             if (infoNeeded & NeedMountOptions)
00305             {
00306               // TODO
00307             }
00308 
00309             if (infoNeeded & NeedRealDeviceName)
00310             {
00311                if (mp->m_mountedFrom.startsWith("/"))
00312                   mp->m_device = KStandardDirs::realPath(mp->m_mountedFrom);
00313             }
00314             
00315             result.append(mp);
00316 
00317             /* goto the next vmount structure: */
00318             vm = (struct vmount *)((char *)vm + vm->vmt_length);
00319         }
00320 
00321     endvfsent( );
00322     }
00323 
00324     free( mntctl_buffer );
00325 #else
00326    STRUCT_SETMNTENT mnttab;
00327    if ((mnttab = SETMNTENT(MNTTAB, "r")) == 0)
00328       return result;
00329 
00330    STRUCT_MNTENT fe;
00331    while (GETMNTENT(mnttab, fe))
00332    {
00333       KMountPoint *mp = new KMountPoint();
00334       mp->m_mountedFrom = QFile::decodeName(FSNAME(fe));
00335          
00336       mp->m_mountPoint = QFile::decodeName(MOUNTPOINT(fe));
00337       mp->m_mountType = QFile::decodeName(MOUNTTYPE(fe));
00338       if (infoNeeded & NeedMountOptions)
00339       {
00340          QString options = QFile::decodeName(MOUNTOPTIONS(fe));
00341          mp->m_mountOptions = QStringList::split(',', options);
00342       }
00343 
00344       if (infoNeeded & NeedRealDeviceName)
00345       {
00346          if (mp->m_mountedFrom.startsWith("/"))
00347             mp->m_device = KStandardDirs::realPath(mp->m_mountedFrom);
00348       }
00349       // TODO: Strip trailing '/' ?
00350       result.append(mp);
00351    }
00352    ENDMNTENT(mnttab);
00353 #endif
00354    return result;
00355 }
00356 
00357 
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This file is part of the documentation for kdecore Library Version 3.2.2.
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