Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754302Ab3EaIsg (ORCPT ); Fri, 31 May 2013 04:48:36 -0400 Received: from mail-wi0-f171.google.com ([209.85.212.171]:48338 "EHLO mail-wi0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754149Ab3EaIsT (ORCPT ); Fri, 31 May 2013 04:48:19 -0400 From: Robert Richter To: Borislav Petkov Cc: Ingo Molnar , Peter Zijlstra , Arnaldo Carvalho de Melo , linux-kernel@vger.kernel.org, Robert Richter Subject: [PATCH 06/16] perf, persistent: Return -EACCES if mapped buffers must be readonly Date: Fri, 31 May 2013 10:47:26 +0200 Message-Id: <1369990056-10310-7-git-send-email-rric@kernel.org> X-Mailer: git-send-email 1.8.1.1 In-Reply-To: <1369990056-10310-1-git-send-email-rric@kernel.org> References: <1369990056-10310-1-git-send-email-rric@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1023 Lines: 32 From: Robert Richter mmap should return EACCES error if fd can not be opened writable. This error code also helps userland to map buffers readonly on failure. Signed-off-by: Robert Richter --- kernel/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 0730f36..a9b6470 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3761,7 +3761,7 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma) return -EINVAL; if (event->attr.persistent && (vma->vm_flags & VM_WRITE)) - return -EINVAL; + return -EACCES; vma_size = vma->vm_end - vma->vm_start; nr_pages = (vma_size / PAGE_SIZE) - 1; -- 1.8.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/