Allow [f]statfs64 to alias [f]statfs

	* sysdeps/unix/sysv/linux/fstatfs64.c: Hide prototypes for fstatfs
	and __fstatfs.  Make them aliases of __fstatfs64 if
	STATFS_IS_STATFS64 is set to non-zero.
	* sysdeps/unix/sysv/linux/statfs64.c: Ditto for __statfs, statfs,
	and __statfs64.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c: Do not
	define __fstatfs and fstatfs if STATFS_IS_STATFS64 is non-zero.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c: Ditto
	for __statfs and statfs.
	* sysdeps/unix/sysv/linux/alpha/kernel_stat.h: Set STATFS_IS_STATFS64
	to 0.
	* sysdeps/unix/sysv/linux/generic/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/hppa/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/ia64/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/microblaze/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/mips/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/s390/s390-64/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h: Ditto.
	* sysdeps/unix/sysv/linux/x86_64/kernel_stat.h: Ditto.

18 files changed, 81 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 60531095db..a475194fe7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,29 @@
+2016-11-22  Steve Ellcey  <sellcey@caviumnetworks.com>
+
+	* sysdeps/unix/sysv/linux/fstatfs64.c: Hide prototypes for fstatfs
+	and __fstatfs.  Make them aliases of __fstatfs64 if
+	STATFS_IS_STATFS64 is set to non-zero.
+	* sysdeps/unix/sysv/linux/statfs64.c: Ditto for __statfs, statfs,
+	and __statfs64.
+	* sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c: Do not
+	define __fstatfs and fstatfs if STATFS_IS_STATFS64 is non-zero.
+	* sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c: Ditto
+	for __statfs and statfs.
+	* sysdeps/unix/sysv/linux/alpha/kernel_stat.h: Set STATFS_IS_STATFS64
+	to 0.
+	* sysdeps/unix/sysv/linux/generic/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/hppa/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/ia64/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/microblaze/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/mips/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc64/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/s390/s390-64/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h: Ditto.
+	* sysdeps/unix/sysv/linux/x86_64/kernel_stat.h: Ditto.
+
 2016-11-22  Andreas Schwab  <schwab@suse.de>
 
 	* misc/mkstemp.c: Include <fcntl.h>.
diff --git a/sysdeps/unix/sysv/linux/alpha/kernel_stat.h b/sysdeps/unix/sysv/linux/alpha/kernel_stat.h
index 6708411407..d637e099cf 100644
--- a/sysdeps/unix/sysv/linux/alpha/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/alpha/kernel_stat.h
@@ -86,3 +86,4 @@ struct glibc21_stat
   };
 
 #define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/fstatfs64.c b/sysdeps/unix/sysv/linux/fstatfs64.c
index a624de697b..a95fe187ca 100644
--- a/sysdeps/unix/sysv/linux/fstatfs64.c
+++ b/sysdeps/unix/sysv/linux/fstatfs64.c
@@ -16,9 +16,18 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+/* Hide the prototypes for __fstatfs and fstatfs so that GCC will not
+   complain about the different function signatures if they are aliased
+   to  __fstat64.  If STATFS_IS_STATFS64 is not zero then the statfs and
+   statfs64 structures have an identical layout but different type names.  */
+
+#define __fstatfs __fstatfs_disable
+#define fstatfs fstatfs_disable
+
 #include <errno.h>
 #include <string.h>
 #include <sys/statfs.h>
+#include <kernel_stat.h>
 #include <stddef.h>
 #include <sysdep.h>
 #include <kernel-features.h>
@@ -70,3 +79,11 @@ __fstatfs64 (int fd, struct statfs64 *buf)
 #endif
 }
 weak_alias (__fstatfs64, fstatfs64)
+
+#undef __fstatfs
+#undef fstatfs
+
+#if STATFS_IS_STATFS64
+weak_alias (__fstatfs64, __fstatfs)
+weak_alias (__fstatfs64, fstatfs)
+#endif
diff --git a/sysdeps/unix/sysv/linux/generic/kernel_stat.h b/sysdeps/unix/sysv/linux/generic/kernel_stat.h
index 5d5f04b402..ee9ff037f3 100644
--- a/sysdeps/unix/sysv/linux/generic/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/generic/kernel_stat.h
@@ -26,3 +26,5 @@
 #else
 # define XSTAT_IS_XSTAT64 0
 #endif
+
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c
index be9599a3eb..c19993850a 100644
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c
+++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/fstatfs.c
@@ -18,8 +18,10 @@
 
 #include <errno.h>
 #include <sys/statfs.h>
+#include <kernel_stat.h>
 #include <stddef.h>
 
+#if !STATFS_IS_STATFS64
 #include "overflow.h"
 
 /* Return information about the filesystem on which FD resides.  */
@@ -30,3 +32,4 @@ __fstatfs (int fd, struct statfs *buf)
   return rc ?: statfs_overflow (buf);
 }
 weak_alias (__fstatfs, fstatfs)
+#endif
diff --git a/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c b/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c
index 1937f0555f..6413a54770 100644
--- a/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c
+++ b/sysdeps/unix/sysv/linux/generic/wordsize-32/statfs.c
@@ -18,8 +18,10 @@
 
 #include <errno.h>
 #include <sys/statfs.h>
+#include <kernel_stat.h>
 #include <stddef.h>
 
+#if !STATFS_IS_STATFS64
 #include "overflow.h"
 
 /* Return information about the filesystem on which FILE resides.  */
@@ -31,3 +33,4 @@ __statfs (const char *file, struct statfs *buf)
 }
 libc_hidden_def (__statfs)
 weak_alias (__statfs, statfs)
+#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/kernel_stat.h b/sysdeps/unix/sysv/linux/hppa/kernel_stat.h
index 9ffa3ba638..a3ac53a1ef 100644
--- a/sysdeps/unix/sysv/linux/hppa/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/hppa/kernel_stat.h
@@ -31,3 +31,4 @@ struct kernel_stat {
 #define _HAVE_STAT64_NSEC
 
 #define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/ia64/kernel_stat.h b/sysdeps/unix/sysv/linux/ia64/kernel_stat.h
index 2f6fbb22dd..9541bb51ca 100644
--- a/sysdeps/unix/sysv/linux/ia64/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/ia64/kernel_stat.h
@@ -18,3 +18,4 @@
 
 #define STAT_IS_KERNEL_STAT 1
 #define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/kernel_stat.h b/sysdeps/unix/sysv/linux/kernel_stat.h
index 4354d14f76..eecc962de3 100644
--- a/sysdeps/unix/sysv/linux/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/kernel_stat.h
@@ -35,3 +35,4 @@ struct kernel_stat
 #define _HAVE_STAT64_NSEC
 
 #define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/microblaze/kernel_stat.h b/sysdeps/unix/sysv/linux/microblaze/kernel_stat.h
index b6ae8c3699..3ce58df8e3 100644
--- a/sysdeps/unix/sysv/linux/microblaze/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/microblaze/kernel_stat.h
@@ -49,3 +49,4 @@ struct kernel_stat
 };
 
 #define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/mips/kernel_stat.h b/sysdeps/unix/sysv/linux/mips/kernel_stat.h
index a41d15f95c..388df1bfff 100644
--- a/sysdeps/unix/sysv/linux/mips/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/mips/kernel_stat.h
@@ -57,3 +57,4 @@ struct kernel_stat
 #endif
 
 #define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h b/sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h
index 0fbde98406..5b76f67c22 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/kernel_stat.h
@@ -48,3 +48,4 @@ struct kernel_stat
 #define _HAVE_STAT64_NSEC
 
 #define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/kernel_stat.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/kernel_stat.h
index fce8fbab91..eec1ab184a 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/kernel_stat.h
@@ -18,3 +18,4 @@
 
 #define STAT_IS_KERNEL_STAT 1
 #define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/kernel_stat.h b/sysdeps/unix/sysv/linux/s390/s390-64/kernel_stat.h
index 2f6fbb22dd..9541bb51ca 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/kernel_stat.h
@@ -18,3 +18,4 @@
 
 #define STAT_IS_KERNEL_STAT 1
 #define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h b/sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h
index eb60236929..a4416009f1 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/kernel_stat.h
@@ -32,3 +32,4 @@ struct kernel_stat
 #define _HAVE_STAT64_NSEC
 
 #define XSTAT_IS_XSTAT64 0
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h b/sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h
index 2a26a78d9c..30afb553b9 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/kernel_stat.h
@@ -45,3 +45,4 @@ struct kernel_stat64
   };
 
 #define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0
diff --git a/sysdeps/unix/sysv/linux/statfs64.c b/sysdeps/unix/sysv/linux/statfs64.c
index de422618fe..4315fe501c 100644
--- a/sysdeps/unix/sysv/linux/statfs64.c
+++ b/sysdeps/unix/sysv/linux/statfs64.c
@@ -16,9 +16,18 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+/* Hide the prototypes for __statfs and statfs so that GCC will not
+   complain about the different function signatures if they are aliased
+   to  __stat64.  If STATFS_IS_STATFS64 is not zero then the statfs and
+   statfs64 structures have an identical layout but different type names.  */
+
+#define __statfs __statfs_disable
+#define statfs statfs_disable
+
 #include <errno.h>
 #include <string.h>
 #include <sys/statfs.h>
+#include <kernel_stat.h>
 #include <stddef.h>
 #include <sysdep.h>
 #include <kernel-features.h>
@@ -72,3 +81,12 @@ __statfs64 (const char *file, struct statfs64 *buf)
 #endif
 }
 weak_alias (__statfs64, statfs64)
+
+#undef __statfs
+#undef statfs
+
+#if STATFS_IS_STATFS64
+weak_alias (__statfs64, __statfs)
+weak_alias (__statfs64, statfs)
+libc_hidden_ver (__statfs64, __statfs)
+#endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/kernel_stat.h b/sysdeps/unix/sysv/linux/x86_64/kernel_stat.h
index 2f6fbb22dd..9541bb51ca 100644
--- a/sysdeps/unix/sysv/linux/x86_64/kernel_stat.h
+++ b/sysdeps/unix/sysv/linux/x86_64/kernel_stat.h
@@ -18,3 +18,4 @@
 
 #define STAT_IS_KERNEL_STAT 1
 #define XSTAT_IS_XSTAT64 1
+#define STATFS_IS_STATFS64 0