linux-libc-headers: update to 4.15.7

While we don't normally follow all the -stable updates for libc-headers, there
was one userspace header that was broken in the 4.15 cycle, and it has now
been fixed in -stable.

The offending header breaks the build for several packages, so we update to
pick up this change:

   Author: Hauke Mehrtens <hauke@hauke-m.de>
   Date:   Mon Feb 12 23:59:51 2018 +0100

       uapi/if_ether.h: move __UAPI_DEF_ETHHDR libc define

       commit da360299b6734135a5f66d7db458dcc7801c826a upstream.

       This fixes a compile problem of some user space applications by not
       including linux/libc-compat.h in uapi/if_ether.h.

       linux/libc-compat.h checks which "features" the header files, included
       from the libc, provide to make the Linux kernel uapi header files only
          provide no conflicting structures and enums. If a user application mixes
       kernel headers and libc headers it could happen that linux/libc-compat.h
       gets included too early where not all other libc headers are included
       yet. Then the linux/libc-compat.h would not prevent all the
       redefinitions and we run into compile problems.
       This patch removes the include of linux/libc-compat.h from
       uapi/if_ether.h to fix the recently introduced case, but not all as this
       is more or less impossible.

       It is no problem to do the check directly in the if_ether.h file and not
       in libc-compat.h as this does not need any fancy glibc header detection
       as glibc never provided struct ethhdr and should define
       __UAPI_DEF_ETHHDR by them self when they will provide this.

       The following test program did not compile correctly any more:

       #include <linux/if_ether.h>
       #include <netinet/in.h>
       #include <linux/in.h>

       int main(void)
       {
           return 0;
       }

       Fixes: 6926e041a892 ("uapi/if_ether.h: prevent redefinition of struct ethhdr")
       Reported-by: Guillaume Nault <g.nault@alphalink.fr>
       Cc: <stable@vger.kernel.org> # 4.15
       Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
       Signed-off-by: David S. Miller <davem@davemloft.net>
       Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We also add a new muslc patch to adjust the ethhdr change in the uapi. As is
suggested in the kernel commit, we can protect musl directly in if_ether itself.

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

0 files changed, 0 insertions, 0 deletions