From patchwork Wed Sep 23 06:05:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11793965 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 216FF16BC for ; Wed, 23 Sep 2020 06:06:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 078E02223E for ; Wed, 23 Sep 2020 06:06:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="NIVOg9nk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726945AbgIWGGs (ORCPT ); Wed, 23 Sep 2020 02:06:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40830 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726753AbgIWGGM (ORCPT ); Wed, 23 Sep 2020 02:06:12 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E34D4C0613D5; Tue, 22 Sep 2020 23:06:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=7X3/qUs2y75UUlnvdA2vy1FAPs/IUNMhWXsjmEB0AzE=; b=NIVOg9nkNP5R1AAXNIhM3YSXPM qQhZDIsOgqRm8F5L3u8NN/+6vxw3vIyqPjouVmp/wB6q7DNB/Mr8240Po/ZZvVU1mexPSNxxRUWjH ej15n9SxAKbmH+ewPeHB+B+fb+RgnttC95+9As75yawZIbjWNYflc0RQhEs6ynljtaBOCt6848rAc 3L4YG9CH6YdVJyf05/7o01+jdSXZWswvcEmEY71kAqtOpHNN698eeRE2lonXxdD3cfU06s7h0bUKC NCXb1r7MyzYJg/RzXohD63kQclT/Rqz0zknvzeGy+Z7SKuS8sh/zsZdStqWQAafANb22dniPP9/20 sV56yCuw==; Received: from p4fdb0c34.dip0.t-ipconnect.de ([79.219.12.52] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKxuj-0003Uu-Tz; Wed, 23 Sep 2020 06:06:02 +0000 From: Christoph Hellwig To: Alexander Viro Cc: Andrew Morton , Jens Axboe , Arnd Bergmann , David Howells , David Laight , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-aio@kvack.org, io-uring@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, keyrings@vger.kernel.org, linux-security-module@vger.kernel.org Subject: [PATCH 9/9] security/keys: remove compat_keyctl_instantiate_key_iov Date: Wed, 23 Sep 2020 08:05:47 +0200 Message-Id: <20200923060547.16903-10-hch@lst.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200923060547.16903-1-hch@lst.de> References: <20200923060547.16903-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: Now that import_iovec handles compat iovecs, the native version of keyctl_instantiate_key_iov can be used for the compat case as well. Signed-off-by: Christoph Hellwig --- security/keys/compat.c | 36 ++---------------------------------- security/keys/internal.h | 5 ----- security/keys/keyctl.c | 2 +- 3 files changed, 3 insertions(+), 40 deletions(-) diff --git a/security/keys/compat.c b/security/keys/compat.c index 7ae531db031cf8..1545efdca56227 100644 --- a/security/keys/compat.c +++ b/security/keys/compat.c @@ -11,38 +11,6 @@ #include #include "internal.h" -/* - * Instantiate a key with the specified compatibility multipart payload and - * link the key into the destination keyring if one is given. - * - * The caller must have the appropriate instantiation permit set for this to - * work (see keyctl_assume_authority). No other permissions are required. - * - * If successful, 0 will be returned. - */ -static long compat_keyctl_instantiate_key_iov( - key_serial_t id, - const struct compat_iovec __user *_payload_iov, - unsigned ioc, - key_serial_t ringid) -{ - struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; - struct iov_iter from; - long ret; - - if (!_payload_iov) - ioc = 0; - - ret = import_iovec(WRITE, (const struct iovec __user *)_payload_iov, - ioc, ARRAY_SIZE(iovstack), &iov, &from); - if (ret < 0) - return ret; - - ret = keyctl_instantiate_key_common(id, &from, ringid); - kfree(iov); - return ret; -} - /* * The key control system call, 32-bit compatibility version for 64-bit archs */ @@ -113,8 +81,8 @@ COMPAT_SYSCALL_DEFINE5(keyctl, u32, option, return keyctl_reject_key(arg2, arg3, arg4, arg5); case KEYCTL_INSTANTIATE_IOV: - return compat_keyctl_instantiate_key_iov( - arg2, compat_ptr(arg3), arg4, arg5); + return keyctl_instantiate_key_iov(arg2, compat_ptr(arg3), arg4, + arg5); case KEYCTL_INVALIDATE: return keyctl_invalidate_key(arg2); diff --git a/security/keys/internal.h b/security/keys/internal.h index 338a526cbfa516..9b9cf3b6fcbb4d 100644 --- a/security/keys/internal.h +++ b/security/keys/internal.h @@ -262,11 +262,6 @@ extern long keyctl_instantiate_key_iov(key_serial_t, const struct iovec __user *, unsigned, key_serial_t); extern long keyctl_invalidate_key(key_serial_t); - -struct iov_iter; -extern long keyctl_instantiate_key_common(key_serial_t, - struct iov_iter *, - key_serial_t); extern long keyctl_restrict_keyring(key_serial_t id, const char __user *_type, const char __user *_restriction); diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c index 9febd37a168fd0..e26bbccda7ccee 100644 --- a/security/keys/keyctl.c +++ b/security/keys/keyctl.c @@ -1164,7 +1164,7 @@ static int keyctl_change_reqkey_auth(struct key *key) * * If successful, 0 will be returned. */ -long keyctl_instantiate_key_common(key_serial_t id, +static long keyctl_instantiate_key_common(key_serial_t id, struct iov_iter *from, key_serial_t ringid) {