[ITP] ncdu 1.1

[Christian Franke]

DePriest, Jason R. wrote:
> I did 'ncdu /proc/registry' and about two hours later, I found it like this, with my bash prompt underneath.
> I didn't cut / paste the box because it would just turn into a bunch of Ä and such.
> I did recreate it with - and | just to give you an idea of what it looked like.
>
> ---Calculating...-------------------------------------------
> |                                                          | 
> | Total files: 467122   dirs: 222594   size:   0.0 B       |
> | Current dir: /proc/registry/HKE.../0/0/0/0/8/4/0/0/0/0/4 |
> |                                                          |
> | Warning: could not open /proc/registr...curity/templates |
> |  some directory sizes may not be correct                 |
> |                                                          |
> |  Calc                                    Press q to quitHangup
> ------------------------------------------------------------
>
>   

This is a buffer overflow issue.

ncdu uses PATH_MAX as path buffer size but does not properly check for 
overflow.

PATH_MAX is 4096 on Linux, but only 260 on Cygwin.
Pathnames from /proc/registry may be much longer.
(e.g. keys below HKLM\SYSTEM\CurrentControlSet\Control\DeviceClasses)

Christian