uclibc: add patch to fix arch specific eventfd defs

Add uClibc 0.9.33.2 patch to fix arch specific eventfd definitions,
particularly EFD_NONBLOCK. The definition in sys/eventfd.h was 04000
(0x800), however MIPS uses 0200 (0x80). This resulted in QEMU built for
MIPS hanging at various points until input is received due to a blocking
poll of stdin.

The patch is a backport of uClibc commit fd355bc1dbcb (eventfd.h: Use
new "bits/" scheme for arch-specific flags). The only conflict was minor
in Makefile.in.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/uclibc/0.9.33.2/uclibc-0055-Use-new-bits-scheme-for-arch-specific-flag.patch

@@ -0,0 +1,284 @@
+From c1a78badec59b1ebd303ace8257ca86fa1e14acb Mon Sep 17 00:00:00 2001
+From: Hiroaki KAWAI <kawai@stratosphere.co.jp>
+Date: Fri, 19 Apr 2013 10:09:35 +0900
+Subject: [PATCH-0.9.33] eventfd.h: Use new "bits/" scheme for arch-specific flags
+
+As in timerfd.h, eventfd.h needs arch-specific definition files.
+alpha, mips and sparc needs separate file, all the other arch
+will use common definition.
+
+This problem is already fixed in glibc.
+
+Also sanitize and provide bits for hppa.
+Make sure not to install the new bits/eventfd unless eventfd support is
+enabled.
+
+Signed-off-by: Hiroaki KAWAI <kawai@stratosphere.co.jp>
+Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
+---
+ Makefile.in                              |  1 +
+ libc/sysdeps/linux/alpha/bits/eventfd.h  | 31 +++++++++++++++++++++++++++++++
+ libc/sysdeps/linux/common/bits/eventfd.h | 31 +++++++++++++++++++++++++++++++
+ libc/sysdeps/linux/common/sys/eventfd.h  | 25 +++++++++++++------------
+ libc/sysdeps/linux/hppa/bits/eventfd.h   | 32 ++++++++++++++++++++++++++++++++
+ libc/sysdeps/linux/mips/bits/eventfd.h   | 31 +++++++++++++++++++++++++++++++
+ libc/sysdeps/linux/sparc/bits/eventfd.h  | 31 +++++++++++++++++++++++++++++++
+ 7 files changed, 170 insertions(+), 12 deletions(-)
+ create mode 100644 libc/sysdeps/linux/alpha/bits/eventfd.h
+ create mode 100644 libc/sysdeps/linux/common/bits/eventfd.h
+ create mode 100644 libc/sysdeps/linux/hppa/bits/eventfd.h
+ create mode 100644 libc/sysdeps/linux/mips/bits/eventfd.h
+ create mode 100644 libc/sysdeps/linux/sparc/bits/eventfd.h
+
+diff --git a/Makefile.in b/Makefile.in
+index 9ba590d..633358f 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -271,6 +271,7 @@ HEADERS_RM-$(UCLIBC_HAS_WORDEXP)             += wordexp.h
+ HEADERS_RM-$(UCLIBC_HAS_XATTR)               += sys/xattr.h
+ HEADERS_RM-$(UCLIBC_HAS_XLOCALE)             += xlocale.h
+ HEADERS_RM-$(UCLIBC_LINUX_SPECIFIC)          += sys/eventfd.h sys/fsuid.h \
++	bits/eventfd.h \
+ 	bits/inotify.h \
+ 	sys/inotify.h \
+ 	sys/kdaemon.h \
+diff --git a/libc/sysdeps/linux/alpha/bits/eventfd.h b/libc/sysdeps/linux/alpha/bits/eventfd.h
+new file mode 100644
+index 0000000..b5a7e41
+--- /dev/null
++++ b/libc/sysdeps/linux/alpha/bits/eventfd.h
+@@ -0,0 +1,31 @@
++/* Copyright (C) 2007-2013 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#ifndef	_SYS_EVENTFD_H
++# error "Never use <bits/eventfd.h> directly; include <sys/eventfd.h> instead."
++#endif
++
++/* Flags for eventfd.  */
++enum
++  {
++    EFD_SEMAPHORE = 000000001,
++#define EFD_SEMAPHORE EFD_SEMAPHORE
++    EFD_CLOEXEC   = 010000000,
++#define EFD_CLOEXEC EFD_CLOEXEC
++    EFD_NONBLOCK  = 000000004
++#define EFD_NONBLOCK EFD_NONBLOCK
++  };
+diff --git a/libc/sysdeps/linux/common/bits/eventfd.h b/libc/sysdeps/linux/common/bits/eventfd.h
+new file mode 100644
+index 0000000..ef49c61
+--- /dev/null
++++ b/libc/sysdeps/linux/common/bits/eventfd.h
+@@ -0,0 +1,31 @@
++/* Copyright (C) 2007-2013 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#ifndef	_SYS_EVENTFD_H
++# error "Never use <bits/eventfd.h> directly; include <sys/eventfd.h> instead."
++#endif
++
++/* Flags for eventfd.  */
++enum
++  {
++    EFD_SEMAPHORE = 00000001,
++#define EFD_SEMAPHORE EFD_SEMAPHORE
++    EFD_CLOEXEC = 02000000,
++#define EFD_CLOEXEC EFD_CLOEXEC
++    EFD_NONBLOCK = 00004000
++#define EFD_NONBLOCK EFD_NONBLOCK
++  };
+diff --git a/libc/sysdeps/linux/common/sys/eventfd.h b/libc/sysdeps/linux/common/sys/eventfd.h
+index 311f803..8686355 100644
+--- a/libc/sysdeps/linux/common/sys/eventfd.h
++++ b/libc/sysdeps/linux/common/sys/eventfd.h
+@@ -1,4 +1,4 @@
+-/* Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
++/* Copyright (C) 2007-2013 Free Software Foundation, Inc.
+    This file is part of the GNU C Library.
+ 
+    The GNU C Library is free software; you can redistribute it and/or
+@@ -21,21 +21,12 @@
+ 
+ #include <stdint.h>
+ 
++/* Get the platform-dependent flags.  */
++#include <bits/eventfd.h>
+ 
+ /* Type for event counter.  */
+ typedef uint64_t eventfd_t;
+ 
+-/* Flags for signalfd.  */
+-enum
+-  {
+-    EFD_SEMAPHORE = 1,
+-#define EFD_SEMAPHORE EFD_SEMAPHORE
+-    EFD_CLOEXEC = 02000000,
+-#define EFD_CLOEXEC EFD_CLOEXEC
+-    EFD_NONBLOCK = 04000
+-#define EFD_NONBLOCK EFD_NONBLOCK
+-  };
+-
+ 
+ __BEGIN_DECLS
+ 
+@@ -43,6 +34,16 @@ __BEGIN_DECLS
+    value to COUNT.  */
+ extern int eventfd (int __count, int __flags) __THROW;
+ 
++#if 0 /* not (yet) implemented in uClibc */
++
++/* Read event counter and possibly wait for events.  */
++extern int eventfd_read (int __fd, eventfd_t *__value);
++
++/* Increment event counter.  */
++extern int eventfd_write (int __fd, eventfd_t __value);
++
++#endif
++
+ __END_DECLS
+ 
+ #endif /* sys/eventfd.h */
+diff --git a/libc/sysdeps/linux/hppa/bits/eventfd.h b/libc/sysdeps/linux/hppa/bits/eventfd.h
+new file mode 100644
+index 0000000..6182c07
+--- /dev/null
++++ b/libc/sysdeps/linux/hppa/bits/eventfd.h
+@@ -0,0 +1,32 @@
++/* Copyright (C) 2007-2013 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library.  If not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#ifndef	_SYS_EVENTFD_H
++# error "Never use <bits/eventfd.h> directly; include <sys/eventfd.h> instead."
++#endif
++
++/* Flags for signalfd.  */
++enum
++  {
++    EFD_SEMAPHORE = 000000001,
++#define EFD_SEMAPHORE EFD_SEMAPHORE
++    EFD_CLOEXEC   = 010000000,
++#define EFD_CLOEXEC EFD_CLOEXEC
++/* the below value looks suspicious, should be 000200004 for consistency */
++    EFD_NONBLOCK  = 00200004 /* HPUX has separate NDELAY & NONBLOCK */
++#define EFD_NONBLOCK EFD_NONBLOCK
++  };
+diff --git a/libc/sysdeps/linux/mips/bits/eventfd.h b/libc/sysdeps/linux/mips/bits/eventfd.h
+new file mode 100644
+index 0000000..17b2f46
+--- /dev/null
++++ b/libc/sysdeps/linux/mips/bits/eventfd.h
+@@ -0,0 +1,31 @@
++/* Copyright (C) 2007-2013 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#ifndef	_SYS_EVENTFD_H
++# error "Never use <bits/eventfd.h> directly; include <sys/eventfd.h> instead."
++#endif
++
++/* Flags for eventfd.  */
++enum
++  {
++    EFD_SEMAPHORE = 00000001,
++#define EFD_SEMAPHORE EFD_SEMAPHORE
++    EFD_CLOEXEC = 02000000,
++#define EFD_CLOEXEC EFD_CLOEXEC
++    EFD_NONBLOCK = 00000200
++#define EFD_NONBLOCK EFD_NONBLOCK
++  };
+diff --git a/libc/sysdeps/linux/sparc/bits/eventfd.h b/libc/sysdeps/linux/sparc/bits/eventfd.h
+new file mode 100644
+index 0000000..bed9f09
+--- /dev/null
++++ b/libc/sysdeps/linux/sparc/bits/eventfd.h
+@@ -0,0 +1,31 @@
++/* Copyright (C) 2007-2013 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++
++   The GNU C Library is free software; you can redistribute it and/or
++   modify it under the terms of the GNU Lesser General Public
++   License as published by the Free Software Foundation; either
++   version 2.1 of the License, or (at your option) any later version.
++
++   The GNU C Library is distributed in the hope that it will be useful,
++   but WITHOUT ANY WARRANTY; without even the implied warranty of
++   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++   Lesser General Public License for more details.
++
++   You should have received a copy of the GNU Lesser General Public
++   License along with the GNU C Library; if not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#ifndef	_SYS_EVENTFD_H
++# error "Never use <bits/eventfd.h> directly; include <sys/eventfd.h> instead."
++#endif
++
++/* Flags for eventfd.  */
++enum
++  {
++    EFD_SEMAPHORE = 1,
++#define EFD_SEMAPHORE EFD_SEMAPHORE
++    EFD_CLOEXEC = 0x400000,
++#define EFD_CLOEXEC EFD_CLOEXEC
++    EFD_NONBLOCK = 0x004000
++#define EFD_NONBLOCK EFD_NONBLOCK
++  };
+-- 
+1.8.1.2
+