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>

6 files changed, 169 insertions, 12 deletions

diff --git a/libc/sysdeps/linux/alpha/bits/eventfd.h b/libc/sysdeps/linux/alpha/bits/eventfd.h
new file mode 100644
index 000000000..b5a7e41ce
--- /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 000000000..ef49c617e
--- /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 c46c2a559..1bf785f32 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
@@ -20,21 +20,12 @@
 
 #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
 
@@ -42,6 +33,16 @@ __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 000000000..6182c0736
--- /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 000000000..17b2f469e
--- /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 000000000..bed9f093b
--- /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
+  };