tree 7db56042d0c3e6749c749e1608b3e699485326cf
parent 191529756633052680dd9d23ad63744ca5aa02a1
author Graff Yang <graff.yang@gmail.com> 1250629877 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1250638273 -0700

nommu: check fd read permission in validate_mmap_request()

According to the POSIX (1003.1-2008), the file descriptor shall have been
opened with read permission, regardless of the protection options specified to
mmap().  The ltp test cases mmap06/07 need this.

Signed-off-by: Graff Yang <graff.yang@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>