[BusyBox] df with post 2.4.18 kernels

[Allan (reply to list only)]

Jacques;

Sorry if I don't understand; Busybox seems to be reading and
interpreting the information given by the kernel correctly, as shown by
/proc/mounts.

Are you implying that a "df that works" should make assumptions, such as
"if it looks like the same mount, don't show it again"?  Wouldn't an
assumption be a bad thing?

I'm sure you could submit a patch to BusyBox yourself that would skip a
filesystem type "rootfs", but I don't know whether Erik (et al) would
accept your patch.  You could try it...

Allan


Jacques Nilo wrote:
> 
> The ouput of df (busybox 0.63) for a LEAF "Bering" distro with a 2.4.20
> kernel gives:
> # df
> Filesystem           1k-blocks      Used Available Use% Mounted on
> rootfs                    6144      4916      1228  80% /
> /dev/root                 6144      4916      1228  80% /
> tmpfs                    15288       164     15124   1% /tmp
> tmpfs                     2048       192      1856   9% /var/log
> 
> The corresponding /proc/mounts is:
> # cat /proc/mounts
> rootfs / rootfs rw 0 0
> /dev/root / tmpfs rw 0 0
> /proc /proc proc rw 0 0
> tmpfs /tmp tmpfs rw 0 0
> tmpfs /var/log tmpfs rw 0 0
> 
> The ouput of df (busybox 0.63) for the same distro with a 2.4.18 kernel gives:
> # df
> Filesystem           1k-blocks      Used Available Use% Mounted on
> /dev/root                 6144      4916      1228  80% /
> tmpfs                    15288       164     15124   1% /tmp
> tmpfs                     2048       192      1856   9% /var/log
> 
> The corresponding /proc/mounts is:
> # cat /proc/mounts
> /dev/root / tmpfs rw 0 0
> /proc /proc proc rw 0 0
> tmpfs /tmp tmpfs rw 0 0
> tmpfs /var/log tmpfs rw 0 0
> 
> The reason is that apparently A. Viro decided to show rootfs in /proc/mounts
> startting with the 2.4.19 kernel. The thread is here:
> http://www.uwsg.iu.edu/hypermail/linux/kernel/0204.3/0290.html
> 
> Any fix/patch planned for df wich could work for all types of 2.4 kernels ?
> 
> Thanks
> 
> Jacques
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