- add sync_file_range()

  Tested successfully on i386..

1 files changed, 33 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/common/sync_file_range.c b/libc/sysdeps/linux/common/sync_file_range.c
new file mode 100644
index 000000000..53f7ae6a1
--- /dev/null
+++ b/libc/sysdeps/linux/common/sync_file_range.c
@@ -0,0 +1,33 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * sync_file_range() for uClibc
+ *
+ * Copyright (C) 2008 Bernhard Reutner-Fischer <uclibc@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#if defined __USE_GNU
+#include <fcntl.h>
+
+#if defined __NR_sync_file_range && defined __UCLIBC_HAS_LFS__
+#define __NR___syscall_sync_file_range __NR_sync_file_range
+static __inline__ _syscall6(int, __syscall_sync_file_range, int, fd,
+		off_t, offset_hi, off_t, offset_lo,
+		off_t, nbytes_hi, off_t, nbytes_lo, unsigned int, flags);
+int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)
+{
+	return __syscall_sync_file_range(fd,
+		__LONG_LONG_PAIR((long)(offset >> 32), (long)(offset & 0xffffffff)),
+		__LONG_LONG_PAIR((long)(nbytes >> 32), (long)(nbytes & 0xffffffff)),
+		flags);
+}
+#elif defined __UCLIBC_HAS_STUBS__
+int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags)
+{
+	__set_errno(ENOSYS);
+	return -1;
+}
+#endif
+#endif