Re: [Qemu-devel] [PATCH] iSCSI: add configuration variables for iSCSI

[Michael Tokarev]

26.01.2012 18:55, Michael Tokarev wrote:
> 26.01.2012 13:54, ronnie sahlberg wrote:
> > Ok so what about this
> >
> > You use a filename starting with "/proc/self/fd/" and you dont have a
> > proc filesystem mounted? you are on your own!

BTW, usual idiom (which was implemented in gawk for example)
is to use /dev/fd/N here, not /proc/self/fd/N which is really
linux-specific.  Linux traditionally had that symlinked to
/proc/self/fd, so it should work as is on linux too.
(I think /dev/fd/N is more widely used than /proc/self/fd --
solaris? *bsd?)

/mjt

> No you're not:
>
> > > > IF ! STRNCMP (filename, "/proc/self/fd/", 14) THEN
> > > > fopen(filename, "r")
> > > > ELSE
> > > > fdopen(atoi(filename+14), "r")
> > > > FI
>
> If the filename starts with /proc/self/fd/, qemu will
> not try to open that file but parse the rest of the
> string as a filedescriptor number.
>
> /mjt