Date: Thu, 16 Aug 2001 12:25:58 -0500 From: Alfred Perlstein <bright@mu.org> To: Sansonetti Laurent <lorenzo@linuxbe.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Getting filename from descriptor or vnode struct Message-ID: <20010816122558.L38066@elvis.mu.org> In-Reply-To: <001501c12678$56cd2320$0201a8c0@teledisnet.be>; from lorenzo@linuxbe.org on Thu, Aug 16, 2001 at 07:24:43PM %2B0200 References: <001501c12678$56cd2320$0201a8c0@teledisnet.be>
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* Sansonetti Laurent <lorenzo@linuxbe.org> [010816 12:22] wrote:
> Hi hackers,
>
> I'm confronted to a problem when I try to hack getdirentries(2) in a kld
> module :
>
> To summarize, getdirentries() filled in a buffer a series of dirent struct,
> and the 'd_name' field represents the filename (without the full path). I
> must recover the full path because I've on disk a list of files to hide ...
>
> The field 'fd' in getdirentries_args is the file descriptor of the
> directory.. and I've discovered that the field 'p_fd' from struct proc is a
> filedesc struct which contains a vnode struct representing the current
> directory ('fd_cdir').
>
> VOP_GETATTR() doesn't allow me to recover this..
>
> If someone could help me, thanks in advance !
Since a vnode may be referenced by multiple hardlinks it can't have
a name really. You could hack on struct file so that it keeps a
copy of the filename passed to open(2).
--
-Alfred Perlstein [alfred@freebsd.org]
Ok, who wrote this damn function called '??'?
And why do my programs keep crashing in it?
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