signalfd.h: Use new "bits/" scheme for arch-specific flags

glibc has split off the arch-specific flag definitions (like
SFD_NONBLOCK) into <arch>/bits/signalfd.h, so that there are no longer
multiple redundant copies of the entire header file.  We will adopt the
same scheme in uClibc.

Special cases are included for: alpha mips sparc

hppa was omitted because it has not been updated in glibc.

All others use the common definition.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

Makefile.in

@@ -279,6 +279,7 @@ HEADERS_RM-$(UCLIBC_LINUX_SPECIFIC)          += sys/eventfd.h sys/fsuid.h \
 	sys/prctl.h \
 	sys/reboot.h \
 	sys/sendfile.h \
+	bits/signalfd.h \
 	sys/signalfd.h \
 	bits/statfs.h \
 	sys/statfs.h \

include/.gitignore

@@ -36,6 +36,7 @@
 /sys/ptrace.h
 /sys/reg.h
 /sys/regdef.h
+/sys/signalfd.h
 /sys/sysmips.h
 /sys/tas.h
 /sys/timerfd.h

libc/sysdeps/linux/alpha/bits/signalfd.h

@@ -0,0 +1,29 @@
+/* Copyright (C) 2007-2012 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_SIGNALFD_H
+# error "Never use <bits/signalfd.h> directly; include <sys/signalfd.h> instead."
+#endif
+
+/* Flags for signalfd.  */
+enum
+  {
+    SFD_CLOEXEC  = 010000000,
+#define SFD_CLOEXEC SFD_CLOEXEC
+    SFD_NONBLOCK = 000000004
+#define SFD_NONBLOCK SFD_NONBLOCK
+  };

libc/sysdeps/linux/common/bits/signalfd.h

@@ -0,0 +1,29 @@
+/* Copyright (C) 2007-2012 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_SIGNALFD_H
+# error "Never use <bits/signalfd.h> directly; include <sys/signalfd.h> instead."
+#endif
+
+/* Flags for signalfd.  */
+enum
+  {
+    SFD_CLOEXEC = 02000000,
+#define SFD_CLOEXEC SFD_CLOEXEC
+    SFD_NONBLOCK = 00004000
+#define SFD_NONBLOCK SFD_NONBLOCK
+  };

include/sys/signalfd.h → libc/sysdeps/linux/common/sys/signalfd.h

@@ -1,4 +1,4 @@
-/* Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 2007-2012 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
@@ -12,17 +12,18 @@
    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, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
-#ifndef _SYS_SIGNALFD_H
-#define _SYS_SIGNALFD_H 1
+#ifndef	_SYS_SIGNALFD_H
+#define	_SYS_SIGNALFD_H	1
 
 #define __need_sigset_t
 #include <signal.h>
 #include <stdint.h>
 
+/* Get the platform-dependent flags.  */
+#include <bits/signalfd.h>
 
 struct signalfd_siginfo
 {
@@ -45,50 +46,12 @@ struct signalfd_siginfo
   uint8_t __pad[48];
 };
 
-/* Flags for signalfd.  */
-#if defined __sparc__ || defined __sparc64__
-enum
-  {
-    SFD_CLOEXEC = 0x400000,
-# define SFD_CLOEXEC SFD_CLOEXEC
-    SFD_NONBLOCK = 0x4000
-# define SFD_NONBLOCK SFD_NONBLOCK
-  };
-
-#elif defined __alpha__
-enum
-  {
-    SFD_CLOEXEC = 010000000,
-# define SFD_CLOEXEC SFD_CLOEXEC
-    SFD_NONBLOCK = 04
-# define SFD_NONBLOCK SFD_NONBLOCK
-  };
-
-#elif defined __mips__
-enum
-  {
-    SFD_CLOEXEC = 02000000,
-# define SFD_CLOEXEC SFD_CLOEXEC
-    SFD_NONBLOCK = 0200
-# define SFD_NONBLOCK SFD_NONBLOCK
-  };
-
-#else
-enum
-  {
-    SFD_CLOEXEC = 02000000,
-# define SFD_CLOEXEC SFD_CLOEXEC
-    SFD_NONBLOCK = 04000
-# define SFD_NONBLOCK SFD_NONBLOCK
-  };
-#endif
-
 __BEGIN_DECLS
 
 /* Request notification for delivery of signals in MASK to be
    performed using descriptor FD.*/
 extern int signalfd (int __fd, const sigset_t *__mask, int __flags)
-  __nonnull ((2)) __THROW;
+  __THROW __nonnull ((2));
 
 __END_DECLS
 

libc/sysdeps/linux/mips/bits/signalfd.h

@@ -0,0 +1,29 @@
+/* Copyright (C) 2007-2012 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_SIGNALFD_H
+# error "Never use <bits/signalfd.h> directly; include <sys/signalfd.h> instead."
+#endif
+
+/* Flags for signalfd.  */
+enum
+  {
+    SFD_CLOEXEC = 02000000,
+#define SFD_CLOEXEC SFD_CLOEXEC
+    SFD_NONBLOCK = 00000200
+#define SFD_NONBLOCK SFD_NONBLOCK
+  };

libc/sysdeps/linux/sparc/bits/signalfd.h

@@ -0,0 +1,29 @@
+/* Copyright (C) 2007-2012 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_SIGNALFD_H
+# error "Never use <bits/signalfd.h> directly; include <sys/signalfd.h> instead."
+#endif
+
+/* Flags for signalfd.  */
+enum
+  {
+    SFD_CLOEXEC = 0x400000,
+#define SFD_CLOEXEC SFD_CLOEXEC
+    SFD_NONBLOCK = 0x004000
+#define SFD_NONBLOCK SFD_NONBLOCK
+  };