Linux: Getting the underlying device from a mount point

[KenD00]

I'm a linux n00b and try to do the following from c / c++ code:
I have a path where a device is mounted, e.g. /media/cdrom and need to get the underlying device, e.g. /dev/hdb. Calling mount and parsing its output doesn't count ;). I've looked at the source of mount but its way too much work to understand how it works. Is there a sort of API call to get this type of information that works across (almost) all linux distros?

:rolleyes:

[xc3ll]

you could try dmesg. it should work. dmesg is available on all linux distros that i've ever used.

[KenD00]

Thanks, but isn't dmesg a binary program like mount too? I don't want to execute an external program to get that information. For now i am parsing /proc/mounts to get the desired information, but is there an easier way?

:rolleyes:

[akupenguin]

getmntent()

[KenD00]

Thanks, thats exactly what i was looking for.

:rolleyes: