[Bug libc/19112] New: umask: add fortification checks

["vapier at gentoo dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19112

            Bug ID: 19112
           Summary: umask: add fortification checks
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: vapier at gentoo dot org
          Reporter: vapier at gentoo dot org
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

someone pointed out that bionic has added a fortify check to catch
bad/incorrect values:
https://groups.google.com/d/msg/android-security-discuss/39oaPaWJX2I/I4CsguoRB60J
umask (bionic FORTIFY_SOURCE extension. Detect invalid umask calls. For
example: umask(777) instead of  umask(0777))

it should be easy to add that to glibc

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