[Ilugc] How to read partition table details with c program
Bhasker C V
bhasker at unixindia.com
Sun Jun 24 21:46:51 IST 2007
You can try sysfs and proc file system combined to get the information
read all sda* directories using readdir (this gives all the
partitions in the sda disk (man readdir)
2. now using that list go one by one into the induvidual directories
There is a file start. That contains the start sector of the
There is a file size. That is the size (in number of sectors)
so End sector = <start> + <size> -1
3. The number of blocks of that parition can be got
4. continue for all other values in the struct dirent
If the partition number is <5 then it is safely a primary parition
and anything >= 5 is extended partition.
Is there any other easier method to do this ? i think i am complicating
things toomuch and it must not be so tough to get the information in
you can use fdisk ( popen to fdisk and then send the command
"fdisk -l" )
On Sun, 2007-06-24 at 18:19 +0530, Senthil Murugan wrote:
> I want to read the partition information of a device say /dev/sda. I tried
> reading the /proc/partitions file, however i couldn't able to get the
> start, end, blocks, partition type, etc from the proc file system. Can any
> plz help me in getting the list of partition and its size, partition
> type(extended,primary,etc) and filesystem(ext2,ext3...) with a simple c
> To unsubscribe, email ilugc-request at ae.iitm.ac.in with
> "unsubscribe <password> <address>"
> in the subject or body of the message.
Bhasker C V
Registered Linux user: #306349 (counter.li.org)
The box said "Requires Windows 95, NT, or better", so I installed Linux.
More information about the ilugc