linux-kernel - [PATCH] random: don't forget compat

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Message-Id: <20191217172455.186395-1-Jason@zx2c4.com>
Date:   Tue, 17 Dec 2019 18:24:55 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     linux-kernel@...r.kernel.org, arnd@...db.de
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] random: don't forget compat_ioctl on unrandom

Recently, there's been some compat ioctl cleanup, in which large
hardcoded lists were replaced with compat_ptr_ioctl. One of these
changes involved removing the random.c hardcoded list entries and adding
a compat ioctl function pointer to the random.c fops. In the process,
urandom was forgotten about, so this commit fixes that oversight.

Fixes: 507e4e2b430b ("compat_ioctl: remove /dev/random commands")
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
---
 drivers/char/random.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 909e0c3d82ea..cda12933a17d 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -2175,6 +2175,7 @@ const struct file_operations urandom_fops = {
 	.read  = urandom_read,
 	.write = random_write,
 	.unlocked_ioctl = random_ioctl,
+	.compat_ioctl = compat_ptr_ioctl,
 	.fasync = random_fasync,
 	.llseek = noop_llseek,
 };
-- 
2.24.1