if (retval >= 0) {
#ifdef CONFIG_LIDS_HIDE_PROC
if (lids_search_proc_to_hide(dentry->d_inode))
current->flags |= PF_HIDDEN;
…
Because each Linux advancement has one in the /proc filing system's entrance, we to hide the advancement also to need to revise proc the document entry.
In fs/proc/root.c
static struct dentry *proc_root_lookup (struct inode * dir, struct dentry * dentry)
{
…
inode = NULL;
#ifdef CONFIG_LIDS_HIDE_PROC
if (pid && p && (! ((p->flags & PF_HIDDEN) && lids_load && lids_local_load)) ) {
#else
if (pid && p) {
#endif
unsigned long ino = (pid >> 16) + PROC_PID_INO;
inode = proc_get_inode (dir->i_sb, ino, &proc_pid);
if (! inode)
return ERR_PTR(-EINVAL);
inode->i_flags|=S_IMMUTABLE;
}
…
}
Then if the advancement by the PF_HIDDEN mark, it will not be demonstrated in the proc filing system.
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