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Commit 849d20a1 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds
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proc: remove proc_tty_ldisc variable 



/proc/tty/ldisc appear to be unused as a directory and
it had been always that way.

But it is userspace visible thing.

Cowardly remove only in-kernel variable holding it.

[akpm@linux-foundation.org: add comment]
Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4dcc03fc

fs/proc/proc_tty.c

+2 −2
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ 
/*

 * The /proc/tty directory inodes...

 */

static struct proc_dir_entry *proc_tty_ldisc, *proc_tty_driver;

static struct proc_dir_entry *proc_tty_driver;



/*

 * This is the handler for /proc/tty/drivers
@@ -176,7 +176,7 @@ void __init proc_tty_init(void) 
{

	if (!proc_mkdir("tty", NULL))

		return;

	proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL);

	proc_mkdir("tty/ldisc", NULL);	/* Preserved: it's userspace visible */

	/*

	 * /proc/tty/driver/serial reveals the exact character counts for

	 * serial links which is just too easy to abuse for inferring