Please revert this commit about statvfs

[aokblast]

Hello, this commit indicates that BSD style system use f_bsize instead of f_frsize. But after I test on my FreeBSD and MacOS. It indicates the f_frsize is the correct result.

[aokblast]

Ping, @sepherosa @bapt

[aokblast]

Experiment:

❯ cat f_bsize.c
#include <sys/statvfs.h>
#include <stdio.h>

int main() {
	struct statvfs buf;
	statvfs("/", &buf);

	printf("%lf\n", (unsigned long long) buf.f_bsize * (unsigned long long)buf.f_bavail / (double)1000.0 / 1000 / 1000);
}

❯ cat f_frsize.c
#include <sys/statvfs.h>
#include <stdio.h>

int main() {
	struct statvfs buf;
	statvfs("/", &buf);

	printf("%lf\n", (unsigned long long) buf.f_frsize * (unsigned long long)buf.f_bavail / (double)1000.0 / 1000 / 1000);
}

MacOS:

❯ cc f_bsize.c -o f_bsize
❯ ./f_bsize
63521.527169
❯ cc f_frsize.c -o f_frsize
❯ ./f_frsize
248.129827
❯ df -H /
Filesystem        Size    Used   Avail Capacity iused ifree %iused  Mounted on
/dev/disk3s1s1    995G     10G    248G     4%    404k  2.4G    0%   /

FreeBSD:

blast@x470-freebsd ~/P/C/d> cc f_bsize.c -o f_bsize
blast@x470-freebsd ~/P/C/d> ./f_bsize
12250.145358
blast@x470-freebsd ~/P/C/d> cc f_frsize.c -o f_frsize
blast@x470-freebsd ~/P/C/d> ./f_frsize
47.852171
blast@x470-freebsd ~/P/C/d> df -H /
Filesystem            Size    Used   Avail Capacity  Mounted on
zroot/ROOT/default    175G    127G     48G    73%    /

OpenBSD:

openbsd-pve$ cc f_bsize.c -o f_bsize
openbsd-pve$ ./f_bsize
6.862389
openbsd-pve$ cc f_frsize.c -o f_frsize
openbsd-pve$ ./f_frsize
0.857799
openbsd-pve$ df -h /
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/sd0a      986M    118M    818M    13%    /

[bapt]

I have no idea about OpenBSD or MacOS, but I confirm for FreeBSD that I had to backout this change. https://cgit.freebsd.org/ports/tree/deskutils/i3status/files/patch-src_print__disk__info.c