src/patches/glibc-2.38/0010-sysdeps-tst-bz21269-handle-ENOSYS-skip-appropriately.patch

   1 From ad9b8399537670a990572c4b0c4da5411e3b68cf Mon Sep 17 00:00:00 2001
   2 From: Sam James <sam@gentoo.org>
   3 Date: Sat, 5 Aug 2023 00:04:33 +0100
   4 Subject: [PATCH 10/44] sysdeps: tst-bz21269: handle ENOSYS & skip
   5  appropriately
   6
   7 SYS_modify_ldt requires CONFIG_MODIFY_LDT_SYSCALL to be set in the kernel, which
   8 some distributions may disable for hardening. Check if that's the case (unset)
   9 and mark the test as UNSUPPORTED if so.
  10
  11 Reviewed-by: DJ Delorie <dj@redhat.com>
  12 Signed-off-by: Sam James <sam@gentoo.org>
  13 (cherry picked from commit 652b9fdb77d9fd056d4dd26dad2c14142768ab49)
  14 ---
  15  sysdeps/unix/sysv/linux/i386/tst-bz21269.c | 11 ++++++++++-
  16  1 file changed, 10 insertions(+), 1 deletion(-)
  17
  18 diff --git a/sysdeps/unix/sysv/linux/i386/tst-bz21269.c b/sysdeps/unix/sysv/linux/i386/tst-bz21269.c
  19 index f508ef8f16..28f5359bea 100644
  20 --- a/sysdeps/unix/sysv/linux/i386/tst-bz21269.c
  21 +++ b/sysdeps/unix/sysv/linux/i386/tst-bz21269.c
  22 @@ -52,7 +52,16 @@ xset_thread_area (struct user_desc *u_info)
  23  static void
  24  xmodify_ldt (int func, const void *ptr, unsigned long bytecount)
  25  {
  26 -  TEST_VERIFY_EXIT (syscall (SYS_modify_ldt, func, ptr, bytecount) == 0);
  27 +  long ret = syscall (SYS_modify_ldt, func, ptr, bytecount);
  28 +
  29 +  if (ret == -1)
  30 +    {
  31 +      if (errno == ENOSYS)
  32 +       FAIL_UNSUPPORTED ("modify_ldt not supported");
  33 +      FAIL_EXIT1 ("modify_ldt failed (errno=%d)", errno);
  34 +    }
  35 +
  36 +  return 0;
  37  }
  38
  39  static int
  40 --
  41 2.39.2
  42