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Problem with ioctl (HDIO_GETGEO) on partition.
From: |
Sarangi_Santosh |
Subject: |
Problem with ioctl (HDIO_GETGEO) on partition. |
Date: |
Thu, 30 Oct 2008 05:49:18 -0400 |
Hi all,
I am into a problem where the ioctl (HDIO_GETGEO) if failing on a device
partition(ex: /dev/emcpowerg1), which is working fine for full device (
ex: /dev/emcpowerg).
Basically I am trying to get start offset of the device partition
(hd_geometry.start).
The host information where I am seeing the above problem is as follows:
Linux ampersandmex01 2.6.18-53.el5PAE #1 SMP Wed Oct 10 16:48:18 EDT
2007 i686 i686 i386 GNU/Linux
Red Hat Enterprise Linux Server release 5.1 (Tikanga)
Can anyone suggest if there is any patch available, so that the problem
can be resolved ?
If the patch is not available, then is there any other way, I can get
the above information without using the ioctl (HDIO_GETGEO) ?
I am pasting the code snip set below for your reference.
Thanks,
-Santosh
<code snip>
int fd;
int sts;
struct hd_geometry hd_geometry_rec;
unsigned int offset;
if ((fd = open(p_ppdevname, O_RDONLY | O_NONBLOCK)) < 0)
{
return OS_SYSTEM_CALL_FAILED;
}
if ((sts = ioctl(fd, HDIO_GETGEO, &hd_geometry_rec)) < 0) ------->
ioctl((HDIO_GETGEO) is failing for device partition (/dev/emcpowerg1)
{
close(fd);
return OS_SYSTEM_CALL_FAILED;
}
offset = (unsigned int) hd_geometry_rec.start;
.
.
.
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