Re: [Bug-tar] [PATCH] add --ignore-missing to ignore missing input files

[Stefan Tomanek]

Dies schrieb Paul Eggert (address@hidden):

> On 04/19/2012 08:05 AM, Stefan Tomanek wrote:
> > +  if (ignore_failed_read_option || (errno == ENOENT && 
> > ignore_missing_option))
> 
> Why just ENOENT?  Can't similar race conditions also
> generate errno values like ELOOP, EACCESS, ENOTDIR?

I have not encountered those yet.
But ENOENT is quite common, e.g. if "find" encounters a temporary file
(editor swp file), which is removed before tar can archive it.

> More generally, why use find + tar?  The combination
> seems inherently unsafe.  An attacker with
> write access to the file system could cause the combination
> to archive the "wrong" file, for example.

Because find has more possibilities to select a subset of files to save; I
consider it a pretty common combination.