summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/xtensa/posix_fadvise.c
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/xtensa/posix_fadvise.c')
-rw-r--r--libc/sysdeps/linux/xtensa/posix_fadvise.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/xtensa/posix_fadvise.c b/libc/sysdeps/linux/xtensa/posix_fadvise.c
new file mode 100644
index 000000000..0fe13a1e9
--- /dev/null
+++ b/libc/sysdeps/linux/xtensa/posix_fadvise.c
@@ -0,0 +1,29 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * posix_fadvise() for Xtensa uClibc
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ * Copyright (C) 2007 Tensilica Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <fcntl.h>
+
+int posix_fadvise (int fd, off_t offset, off_t len, int advice)
+{
+#ifdef __NR_fadvise64_64
+ INTERNAL_SYSCALL_DECL (err);
+ int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, advice,
+ __LONG_LONG_PAIR ((long) (offset >> 31),
+ (long) offset),
+ __LONG_LONG_PAIR ((long) (len >> 31),
+ (long) len));
+ if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
+ return 0;
+ return INTERNAL_SYSCALL_ERRNO (ret, err);
+#else
+ return ENOSYS;
+#endif
+}