4.8.2: device/sysdep_LINUX.c

[Aaron Scamehorn]

Hello,

In device_usage_sysdep:

I'm not quite sure what the following is supposed to be calculating:

inf->f_blocks=          usage.f_blocks * usage.f_frsize / usage.f_bsize;


I think you're incorrectly mixing block size & fragment sizes.  I don't
think they have anything to do with each other.

You're probably just getting lucky, because your f_frsize & f_bsize both
= 4K.

However, on large filesystems, where f_bsize might be 32K, you'll get
crazy usage numbers.

I think you just want:

inf->f_blocks=          usage.f_blocks ;


Thanks,
Aaron 


25        if(statvfs( dir, &usage) != 0) {
(gdb) n
(gdb) print usage
$1 = {f_bsize = 32768, f_frsize = 4096, f_blocks = 8811322, f_bfree =
8053030, f_bavail = 7605440,
  f_files = 35815424, f_ffree = 35800806, f_favail = 35800806, f_fsid =
0, __f_unused = 0, f_flag = 0,
    f_namemax = 255, __f_spare = {0, 0, 0, 0, 0, 0}}