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partitionmanager
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Find mountpoint if device is identified by label in fstab. 

Use getmntent & friends to iterate over /etc/fstab, /etc/mtab and /proc/mounts,
as this seems to be the recommended way to do that.

svn path=/trunk/extragear/sysadmin/partitionmanager/; revision=964182
This commit is contained in:
Volker Lanz 2009-05-06 09:54:12 +00:00
parent 392dd95241
commit fb0791ce0f
1 changed files with 29 additions and 24 deletions
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53
src/core/libparted.cpp
View File

@ -45,6 +45,7 @@
#include <parted/parted.h>
#include <sys/statvfs.h>
#include <unistd.h>
#include <mntent.h>
/** Callback to handle exceptions from libparted
@param e the libparted exception to handle
@ -66,45 +67,49 @@ static QString findUuidDevice(const QString& s)
return QFile::exists(filename) ? QFile::symLinkTarget(filename) : "";
}
/** Finds a device by LABEL.
@param s the label
@return the device node the label links to
*/
static QString findLabelDevice(const QString& s)
{
const QString filename = "/dev/disk/by-label/" + QString(s).remove("LABEL=", Qt::CaseInsensitive);
return QFile::exists(filename) ? QFile::symLinkTarget(filename) : "";
}
/** Reads mountpoints from a file.
@param filename the name of the file to read mount points from
@param result reference to QMap where the result will be stored
*/
static void readMountpoints(const QString& filename, QMap<QString, QStringList>& result)
{
QFile file(filename);
if (!file.open(QIODevice::ReadOnly))
FILE* fp = setmntent(filename.toLocal8Bit(), "r");
if (fp == NULL)
return;
QByteArray line = file.readLine();
struct mntent* p = NULL;
while(!line.isEmpty())
while ((p = getmntent(fp)) != NULL)
{
line = line.simplified();
QString device = p->mnt_fsname;
if (!line.isEmpty() && (line[0] == '/' || line.startsWith("UUID=")))
if (device.startsWith("UUID=", Qt::CaseInsensitive))
device = findUuidDevice(device);
if (device.startsWith("LABEL=", Qt::CaseInsensitive))
device = findLabelDevice(device);
if (!device.isEmpty())
{
QList<QByteArray> split = line.split(' ');
QString mountPoint = p->mnt_dir;
if (split.size() >= 2)
{
QString device = split[0];
if (device.startsWith("UUID=", Qt::CaseInsensitive))
device = findUuidDevice(device);
if (!device.isEmpty())
{
QString mountPoint = split[1].replace("\\040", " ");
if (QFile::exists(mountPoint) && result[device].indexOf(mountPoint) == -1)
result[device].append(mountPoint);
}
}
if (QFile::exists(mountPoint) && result[device].indexOf(mountPoint) == -1)
result[device].append(mountPoint);
}
line = file.readLine();
}
endmntent(fp);
}
/** Reads sectors used on a FileSystem using libparted functions.