contrib/src/gnutls/0001-fcntl-do-not-call-GetHandleInformation-in-Winstore-a.patch

   1 From 0c8ca1736ee07c7d7dbce05108120cf4f8937bd0 Mon Sep 17 00:00:00 2001
   2 From: Steve Lhomme <robux4@ycbcr.xyz>
   3 Date: Thu, 4 Jun 2020 10:15:38 +0200
   4 Subject: [PATCH] fcntl: do not call GetHandleInformation() in Winstore apps
   5
   6 The API is forbidden [1] and HANDLE_FLAG_INHERIT would never be set as exec()
   7 is not allowed either [2].
   8
   9 [1] https://docs.microsoft.com/en-us/windows/win32/api/handleapi/nf-handleapi-gethandleinformation
  10 [2] https://docs.microsoft.com/en-us/cpp/cppcx/crt-functions-not-supported-in-universal-windows-platform-apps
  11 ---
  12  gl/fcntl.c | 7 +++++++
  13  1 file changed, 7 insertions(+)
  14
  15 diff --git a/gl/fcntl.c b/gl/fcntl.c
  16 index 6b9927ec4..e316ca306 100644
  17 --- a/gl/fcntl.c
  18 +++ b/gl/fcntl.c
  19 @@ -229,12 +229,19 @@ fcntl (int fd, int action, /* arg */...)
  20        {
  21  # if defined _WIN32 && ! defined __CYGWIN__
  22          HANDLE handle = (HANDLE) _get_osfhandle (fd);
  23 +#  if WINAPI_FAMILY_PARTITION (WINAPI_PARTITION_DESKTOP)
  24          DWORD flags;
  25          if (handle == INVALID_HANDLE_VALUE
  26              || GetHandleInformation (handle, &flags) == 0)
  27            errno = EBADF;
  28          else
  29            result = (flags & HANDLE_FLAG_INHERIT) ? 0 : FD_CLOEXEC;
  30 +#  else /* ! WINAPI_PARTITION_DESKTOP */
  31 +        if (handle == INVALID_HANDLE_VALUE)
  32 +          errno = EBADF;
  33 +        else
  34 +          result = 0;
  35 +#  endif /* ! WINAPI_PARTITION_DESKTOP */
  36  # else /* !W32 */
  37          /* Use dup2 to reject invalid file descriptors.  No way to
  38             access this information, so punt.  */
  39 --
  40 2.26.0.windows.1
  41