On Tue, Mar 30, 2004 at 11:02:57AM +0200, Jan Hudec wrote:
> On Tue, Mar 30, 2004 at 02:00:25 +0200, Domen Puncer wrote:
> > I've been trying to fix usbfs bug (bugme 1418), and i have problems
> > implementing chown/chmod.
> >
> > I've come up with following code (outputs 4xabd, even when there should be
> > directories; nothing seems chmoded in /proc/bus/usb/)
> >
> > Any pointer what did i do wrong appreciated.
>
> You shouldn't do chmod from kernel. You should call_usermodehelper.
But then I have to set chmod path somewhere?
> Dentry cache is a cache -- it does not hold ALL the files. Only some of
> them. At mostly random.
Hmm... then how could i change it from kernel?
> Permissions for /proc files must be fixed in the code that registers
> them.
Problem is that files are created before mounting usbfs (with devuid
etc. options).
> >
> > Domen
> >
> > struct dentry *dentry;
> > list_for_each_entry(dentry, &s_root->d_subdirs, d_subdirs) {
> > printk("a\n");
> > if (!dentry->d_inode)
> > continue;
> > printk("b\n");
> > if (dentry->d_inode->i_mode & S_IFDIR) {
> > printk("c\n");
> > struct dentry *devd;
> >
> > dentry->d_inode->i_uid = busuid;
> > dentry->d_inode->i_gid = busgid;
> > dentry->d_inode->i_mode = busmode & S_IFDIR;
> >
> > list_for_each_entry(devd, &dentry->d_subdirs,
> > d_subdirs) {
> > dentry->d_inode->i_uid = devuid;
> > dentry->d_inode->i_gid = devgid;
> > dentry->d_inode->i_mode = devmode & S_IFREG;
> > }
> > } else {
> > printk("d\n");
> > dentry->d_inode->i_uid = listuid;
> > dentry->d_inode->i_gid = listgid;
> > dentry->d_inode->i_mode = listmode & S_IFREG;
> > }
> > }
> >
> > --
> > Kernelnewbies: Help each other learn about the Linux kernel.
> > Archive: http://mail.nl.linux.org/kernelnewbies/
> > FAQ: http://kernelnewbies.org/faq/
> >
> -------------------------------------------------------------------------------
> Jan 'Bulb' Hudec <bulb@ucw.cz>
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