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.
Dentry cache is a cache -- it does not hold ALL the files. Only some of
them. At mostly random.
Permissions for /proc files must be fixed in the code that registers
them.
>
> 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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