first pass at implementing *at funcs

Tested basic functionality with coreutils and things seem to work.  At
least gives us a basis to jump from.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/common/fstatat.c b/libc/sysdeps/linux/common/fstatat.c
new file mode 100644
index 000000000..149c1890d
--- /dev/null
+++ b/libc/sysdeps/linux/common/fstatat.c
@@ -0,0 +1,27 @@
+/*
+ * fstatat() for uClibc
+ *
+ * Copyright (C) 2009 Analog Devices Inc.
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <sys/stat.h>
+#include "xstatconv.h"
+
+#ifdef __NR_fstatat64
+int fstatat(int fd, const char *file, struct stat *buf, int flag)
+{
+	int ret;
+	struct kernel_stat kbuf;
+
+	ret = INLINE_SYSCALL(fstatat64, 4, fd, file, &kbuf, flag);
+	if (ret == 0)
+		__xstat_conv(&kbuf, buf);
+
+	return ret;
+}
+#else
+/* should add emulation with fstat() and /proc/self/fd/ ... */
+#endif