[rrd-developers] Bug#497739: rrdtool: rrdgraph no longer drops all directories given in filename argument when imginfo string prints

Sebastian Harl sh at tokkee.org
Wed Nov 5 12:31:25 CET 2008

Hi Tobi,

On Tue, Nov 04, 2008 at 10:59:04PM +0100, Tobias Oetiker wrote:
> Today Sebastian Harl wrote:
> > What I don't understand though is why '\\' is supposed to mark the
> > beginning of the filename. Tobi, is that supposed to take care of
> > Windows? In theory, '\\' may be used in filenames on Unix systems, so
> > this might behave incorrectly then. Is there any reason why you don't
> > use the basename(3) function instead? That's defined in POSIX.1-2001s
> > an XSI extension), so it should not cause any problems.
> yes the \\ is for our backslashing windows friends ... just read
> the basename manpage it sonds scary all the caveats ...

On Debian Sid the manpage talks about modifying its argument - is that
what you meant? So, we'd probably have to enclose all calls to basename
with strdup/free.

> do you know who supports posix.1-2001 ?

POSIX.1 is the core part of _the_ POSIX standard [1]. About any modern
operating system (including Windows in some way) supports (part of) it.
The Wikipedia page includes a more verbose list of POSIX compliant
operating systems.

> If this is widely adoped, it is certainly more elegant tha
> implementing it ourselfs.

I don't expect any (relevant) operating system to cause problems if we
use dirname.


[1] http://en.wikipedia.org/wiki/POSIX

Sebastian "tokkee" Harl +++ GnuPG-ID: 0x8501C7FC +++ http://tokkee.org/

Those who would give up Essential Liberty to purchase a little Temporary
Safety, deserve neither Liberty nor Safety.         -- Benjamin Franklin

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