[PATCH] Fix ppc32 posix_fadvise{,64}

[Jakub Jelinek <jakub at redhat dot com>]

Hi!

http://linux.bkbits.net:8080/linux-2.5/patch@1.1276.1.10?nav=index.html|ChangeSet@-2w|cset@1.1276.1.10
says the arguments have been reordered on ppc32.
Also, fadvise64 syscall, as it uses long long for second argument and long
long arguments are on ppc32 passed in even register pairs, needs a padding.

2003-09-01  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c: New.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c: New.

--- libc/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c.jj	2003-09-01 06:10:06.000000000 -0400
+++ libc/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise64.c	2003-09-01 06:14:44.000000000 -0400
@@ -0,0 +1,77 @@
+/* Copyright (C) 2003 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sysdep.h>
+#include <kernel-features.h>
+
+int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise);
+int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise);
+
+/* Advice the system about the expected behaviour of the application with
+   respect to the file associated with FD.  */
+
+int
+__posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise)
+{
+#ifdef __NR_fadvise64_64
+  INTERNAL_SYSCALL_DECL (err);
+  int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, advise,
+			      __LONG_LONG_PAIR ((long)(offset >> 32), (long)offset),
+			      __LONG_LONG_PAIR ((long)(len >> 32), (long)len));
+  if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+    return 0;
+# ifndef __ASSUME_FADVISE64_64_SYSCALL
+  if (INTERNAL_SYSCALL_ERRNO (ret, err) != ENOSYS)
+# endif
+   return INTERNAL_SYSCALL_ERRNO (ret, err);
+#endif
+#ifndef __ASSUME_FADVISE64_64_SYSCALL
+# ifdef __NR_fadvise64
+  if (len != (off_t) len)
+    return EOVERFLOW;
+
+  INTERNAL_SYSCALL_DECL (err2);
+  int ret2 = INTERNAL_SYSCALL (fadvise64, err2, 6, fd, 0,
+			       __LONG_LONG_PAIR ((long)(offset >> 32), (long)offset),
+			       (off_t) len, advise);
+  if (!INTERNAL_SYSCALL_ERROR_P (ret2, err2))
+    return 0;
+  return INTERNAL_SYSCALL_ERRNO (ret2, err2);
+# else
+  return ENOSYS;
+# endif
+#endif
+}
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3)
+
+int
+__posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise)
+{
+  return __posix_fadvise64_l64 (fd, offset, len, advise);
+}
+
+versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3);
+compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2);
+#else
+strong_alias (__posix_fadvise64_l64, posix_fadvise64);
+#endif
--- libc/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c.jj	2003-09-01 06:25:58.000000000 -0400
+++ libc/sysdeps/unix/sysv/linux/powerpc/powerpc32/posix_fadvise.c	2003-09-01 06:26:55.000000000 -0400
@@ -0,0 +1,40 @@
+/* Copyright (C) 2003 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sysdep.h>
+
+/* Advice the system about the expected behaviour of the application with
+   respect to the file associated with FD.  */
+
+int
+posix_fadvise (int fd, off_t offset, off_t len, int advise)
+{
+#ifdef __NR_fadvise64
+  INTERNAL_SYSCALL_DECL (err);
+  int ret = INTERNAL_SYSCALL (fadvise64, err, 6, fd, 0,
+			      __LONG_LONG_PAIR (offset >> 31, offset), len,
+			      advise);
+  if (INTERNAL_SYSCALL_ERROR_P (ret, err))
+    return INTERNAL_SYSCALL_ERRNO (ret, err);
+  return 0;
+#else
+  return ENOSYS;
+#endif
+}


	Jakub