toolchain/uClibc/patches-0.9.33.2/500-eventfd.patch

   1 From 7810e4f8027b5c4c8ceec6fefec4eb779362ebb5 Mon Sep 17 00:00:00 2001
   2 From: Khem Raj <raj.khem@gmail.com>
   3 Date: Sun, 10 Jun 2012 16:36:23 +0000
   4 Subject: eventfd: Implement eventfd2 and fix eventfd
   5
   6 eventfd: evntfd assumes to take two arguments instead it
   7 should be one evntfd expects two therefore implement both syscalls with
   8 correct parameters
   9
  10 Thanks Eugene Rudoy for reporting it and also providing the patch
  11
  12 Signed-off-by: Khem Raj <raj.khem@gmail.com>
  13 ---
  14 --- a/libc/sysdeps/linux/common/eventfd.c
  15 +++ b/libc/sysdeps/linux/common/eventfd.c
  16 @@ -7,12 +7,24 @@
  17   * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
  18   */
  19
  20 +#include <errno.h>
  21  #include <sys/syscall.h>
  22  #include <sys/eventfd.h>
  23
  24  /*
  25   * eventfd()
  26   */
  27 -#ifdef __NR_eventfd
  28 -_syscall2(int, eventfd, int, count, int, flags)
  29 +#if defined __NR_eventfd || defined __NR_eventfd2
  30 +int eventfd (int count, int flags)
  31 +{
  32 +#if defined __NR_eventfd2
  33 +  return INLINE_SYSCALL (eventfd2, 2, count, flags);
  34 +#elif defined __NR_eventfd
  35 +  if (flags != 0) {
  36 +     __set_errno (EINVAL);
  37 +    return -1;
  38 +  }
  39 +  return INLINE_SYSCALL (eventfd, 1, count);
  40 +#endif
  41 +}
  42  #endif
  43 --- a/libc/sysdeps/linux/common/stubs.c
  44 +++ b/libc/sysdeps/linux/common/stubs.c
  45 @@ -93,7 +93,7 @@ make_stub(epoll_ctl)
  46  make_stub(epoll_wait)
  47  #endif
  48
  49 -#if !defined __NR_eventfd && defined __UCLIBC_LINUX_SPECIFIC__
  50 +#if !defined __NR_eventfd && !defined __NR_eventfd2 && defined __UCLIBC_LINUX_SPECIFIC__
  51  make_stub(eventfd)
  52  #endif
  53