Messages in this thread Patch in this message | | | From | 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 |
| |
From: Robert Richter <robert.richter@calxeda.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@calxeda.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
| |