1 files changed, 72 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/pwrite.c b/nptl/sysdeps/unix/sysv/linux/pwrite.c
new file mode 100644
index 0000000000..d13fe5a4a3
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/pwrite.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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 <assert.h>
+#include <errno.h>
+#include <endian.h>
+#include <unistd.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+#include <bp-checks.h>
+#include <nptl/pthreadP.h>
+#include <tls.h>
+
+#ifndef __NR_pwrite64
+# error "__NR_pwrite64 must be defined"
+#endif
+
+
+/* The order of hi, lo depends on endianness.  */
+extern ssize_t __syscall_pwrite64 (int fd, const void *__unbounded buf,
+				   size_t count, off_t offset_hi,
+				   off_t offset_lo);
+
+
+ssize_t
+__libc_pwrite (fd, buf, count, offset)
+     int fd;
+     const void *buf;
+     size_t count;
+     off_t offset;
+{
+  /* First try the syscall.  */
+  assert (sizeof (offset) == 4);
+#ifndef NOT_IN_libc
+  if (__builtin_expect (THREAD_GETMEM (THREAD_SELF,
+				       header.data.multiple_threads) == 0, 1))
+    return INLINE_SYSCALL (pwrite64, 5, fd, CHECK_N (buf, count), count,
+			   __LONG_LONG_PAIR (offset >> 31, offset));
+
+  int oldtype = LIBC_CANCEL_ASYNC ();
+#endif
+
+  ssize_t result = INLINE_SYSCALL (pwrite64, 5, fd, CHECK_N (buf, count),
+				   count,
+				   __LONG_LONG_PAIR (offset >> 31, offset));
+
+#ifndef NOT_IN_libc
+  LIBC_CANCEL_RESET (oldtype);
+#endif
+
+  return result;
+}
+
+strong_alias (__libc_pwrite, __pwrite)
+weak_alias (__libc_pwrite, pwrite)