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Joris's questions

Martin Hope
Joris
Asked: 2020-10-24 00:14:40 +0800 CST
  • 0

Something very weird I came across, any thoughts would be much appreciated:

Some software (httrack) created a directory structure. Using my user (which also ran the software), I cannot view the directory:

ls -ltra feed/
ls: cannot access 'feed/.': Permission denied
ls: cannot access 'feed/..': Permission denied
ls: cannot access 'feed/atom': Permission denied
total 0
-????????? ? ? ? ?            ? atom
d????????? ? ? ? ?            ? ..
d????????? ? ? ? ?            ? .

As root I can list the contents just fine:

ls -ltra feed/
total 68
-rw-r--r-- 1 ys ys 59100 Oct 22 13:30 atom
drw-r--r-- 2 ys ys  4096 Oct 22 22:51 .
drwxr-xr-x 8 ys ys  4096 Oct 23 00:00 ..

But it gets more weird: as user nobody, I get the same results as root (!).

The OS is a Linux Mint (Debian derived) version ulyana running Linux 5.4.0-40, the filesystem is ext4 (with discard) on a crypt LVM on an SSD in an Intel laptop (lenovo x1 carbon, gen4). The ram is non-ECC.

Is there a logical explanation? I'll start by running memtest...

linux filesystems memory corruption ext4
Martin Hope
Joris
Asked: 2010-08-02 11:16:36 +0800 CST
  • 2

I have an ftp client (.NET app I don't have the source to) that only does active mode that needs to push data to an appliances ftp-server that only speaks passive.

There is nothing I can do to modify the software on either end; but everything in between is fair game. (routing, windows or linux software, firewall tricks, ...)

Is there some kind of ftp proxy software? Or some kind of solution I could try?

ftp passive