QNX API to get application running drive name

QNX DEVELOPERS General Programming
1

Hi,

   Is there any API in QNX to know the name of the drive(can be physical or logical) in which the QNX application is running.

Thanks in advance,
hello

2

What do you mean by the “name of the drive”?

  1. /dev/hd0 (The device)
  2. /dev/hd0t77 (The partition)
  3. Seagate (The manufacturer)
  4. Norman (Some arbitrary name you made up)
  5. / or /hd (The mount point)

Applications don’t run in drives. The load module might be on a drive, or the program might be reading from a drive. You might have booted from a ROM and a program in the load module might be reading off of a drive.

3

“the program might be reading from a drive”. Is there any API to get the hardisk name from which the program is read , i mean 1) /dev/hd0 (The device)
2) /dev/hd0t77 (The partition)

Regards,
hello

4

Briefly, yes. This isn’t a very good answer. It is possible to figure this out programatically. I think the place to start looking is with stat, fstat or lstat.

5

This isn’t completely “programmatic”, but running “pidin -p1 fds” dumps the filename of every currently running binary.

Knowing the filename of your binary, you can call fstatvfs() to deduce the physical device and volume it is associated with.

6

Hi,

I tried using fstatvfs(). But the struct statvfs doesnt have fields indicating disk name. Using df -P , i am able to get the logical drive name in which application is read. Is there any API corresponding to it.

Regards,
hello