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Diffstat (limited to 'sysdeps/unix/sysv/linux/pwrite64.c')
-rw-r--r--sysdeps/unix/sysv/linux/pwrite64.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c
new file mode 100644
index 0000000000..f2b4bcbe4e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pwrite64.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 1997 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <unistd.h>
+
+extern ssize_t __syscall_pwrite64 (int fd, const void *buf, size_t count,
+ off_t offset_hi, off_t offset_lo);
+
+static ssize_t __emulate_pwrite64 (int fd, const void *buf, size_t count,
+ off64_t offset) internal_function;
+
+
+ssize_t
+__pwrite64 (fd, buf, count, offset)
+ int fd;
+ const void *buf;
+ size_t count;
+ off64_t offset;
+{
+ ssize_t result;
+
+ /* First try the syscall. */
+ result = __syscall_pwrite64 (fd, buf, count, (off_t) (offset >> 32),
+ (off_t) (offset & 0xffffffff));
+ if (result == -1 && errno == ENOSYS)
+ /* No system call available. Use the emulation. */
+ result = __emulate_pwrite64 (fd, buf, count, offset);
+
+ return result;
+}
+
+weak_alias (__pwrite64, pwrite64)
+
+#define __pwrite64(fd, buf, count, offset) \
+ static internal_function __emulate_pwrite64 (fd, buf, count, offset)
+#include <sysdeps/posix/pwrite64.c>