get free harddisk space in c program

[monkeyking]

If I want system info about my memory I can simply read the

/proc/mem_info
If I want system info about my cpu usage I can simply read the first line in

/proc/stat

Are there no simple way to get the information about the harddisk usage.
Similar to the first line in the output of df

thanks in advance

[stroyan]

You can find the mounted file systems by reading /etc/mtab.

You can find the free and used space of each file system by calling statfs() for each mount point.

[monkeyking]

Hey, thanks for your reply, but I ended up doing something like this.



#include <sys/statvfs.h>
...
float perc = (100*(1-(float)diskinfo.f_bavail/diskinfo.f_blocks));

perc will then be a number between 0-100 with the current percentage of diskusage.