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Message-Id: <1369990056-10310-7-git-send-email-rric@kernel.org> Date: Fri, 31 May 2013 10:47:26 +0200 From: Robert Richter <rric@...nel.org> To: Borislav Petkov <bp@...en8.de> Cc: Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Arnaldo Carvalho de Melo <acme@...stprotocols.net>, linux-kernel@...r.kernel.org, Robert Richter <robert.richter@...xeda.com> Subject: [PATCH 06/16] perf, persistent: Return -EACCES if mapped buffers must be readonly From: Robert Richter <robert.richter@...xeda.com> 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 <robert.richter@...xeda.com> --- 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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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