From 902f699c388c62357881c69cd204f10fcaf521d6 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Wed, 29 Jun 2011 12:58:41 -0700
Subject: [PATCH] qa: add clone_range tool

Signed-off-by: Sage Weil <sage@newdream.net>
---
 qa/Makefile            |  2 +-
 qa/btrfs/.gitignore    |  1 +
 qa/btrfs/clone_range.c | 35 +++++++++++++++++++++++++++++++++++
 3 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 qa/btrfs/.gitignore
 create mode 100644 qa/btrfs/clone_range.c

diff --git a/qa/Makefile b/qa/Makefile
index 05dc834adbdb3..ad655b7e743cb 100644
--- a/qa/Makefile
+++ b/qa/Makefile
@@ -1,4 +1,4 @@
-DIRS= workunits
+DIRS= workunits btrfs
 
 all:
 	for d in $(DIRS) ; do ( cd $$d ; $(MAKE) all ) ; done
diff --git a/qa/btrfs/.gitignore b/qa/btrfs/.gitignore
new file mode 100644
index 0000000000000..23809b1905215
--- /dev/null
+++ b/qa/btrfs/.gitignore
@@ -0,0 +1 @@
+/clone_range
diff --git a/qa/btrfs/clone_range.c b/qa/btrfs/clone_range.c
new file mode 100644
index 0000000000000..0a88e16013104
--- /dev/null
+++ b/qa/btrfs/clone_range.c
@@ -0,0 +1,35 @@
+#include <fcntl.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <string.h>
+
+#include <linux/types.h>
+#include "../../src/os/btrfs_ioctl.h"
+#include <stdio.h>
+#include <errno.h>
+
+int main(int argc, char **argv)
+{
+        struct btrfs_ioctl_clone_range_args ca;
+        int dfd;
+        int r;
+
+	if (argc < 6) {
+		printf("usage: %s <srcfn> <srcoffset> <srclen> <destfn> <destoffset>\n", argv[0]);
+		exit(1);
+	}
+
+        ca.src_fd = open(argv[1], O_RDONLY);
+        ca.src_offset = atoi(argv[2]);
+        ca.src_length = atoi(argv[3]);
+        dfd = open(argv[4], O_WRONLY|O_CREAT);
+        ca.dest_offset = atoi(argv[5]);
+
+        r = ioctl(dfd, BTRFS_IOC_CLONE_RANGE, &ca);
+        printf("clone_range %s %lld %lld~%lld to %s %d %lld = %d %s\n",
+               argv[1], ca.src_fd,
+	       ca.src_offset, ca.src_length,
+	       argv[4], dfd,
+               ca.dest_offset, r, strerror(errno));
+        return r;
+}
-- 
2.39.5