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authorTao Ma <tao.ma@oracle.com>2009-09-21 07:25:14 +0400
committerJoel Becker <joel.becker@oracle.com>2009-09-23 07:09:51 +0400
commitbd50873dc725a9fa72592ecc986c58805e823051 (patch)
tree8d2d4d514f73b6425bf0bf5bd1806949b84a2489 /fs/ocfs2/ioctl.c
parent64871b8d62570fabec3b0959d494f8e0b87f5c4b (diff)
downloadlinux-bd50873dc725a9fa72592ecc986c58805e823051.tar.xz
ocfs2: Add ioctl for reflink.
The ioctl will take 3 parameters: old_path, new_path and preserve and call vfs_reflink. It is useful when we backport reflink features to old kernels. Signed-off-by: Tao Ma <tao.ma@oracle.com>
Diffstat (limited to 'fs/ocfs2/ioctl.c')
-rw-r--r--fs/ocfs2/ioctl.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 9fcd36dcc9a0..a68d0e4ca6dc 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -22,6 +22,7 @@
#include "ocfs2_fs.h"
#include "ioctl.h"
#include "resize.h"
+#include "refcounttree.h"
#include <linux/ext2_fs.h>
@@ -116,6 +117,9 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
int status;
struct ocfs2_space_resv sr;
struct ocfs2_new_group_input input;
+ struct reflink_arguments args;
+ const char *old_path, *new_path;
+ bool preserve;
switch (cmd) {
case OCFS2_IOC_GETFLAGS:
@@ -161,6 +165,15 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return -EFAULT;
return ocfs2_group_add(inode, &input);
+ case OCFS2_IOC_REFLINK:
+ if (copy_from_user(&args, (struct reflink_arguments *)arg,
+ sizeof(args)))
+ return -EFAULT;
+ old_path = (const char *)(unsigned long)args.old_path;
+ new_path = (const char *)(unsigned long)args.new_path;
+ preserve = (args.preserve != 0);
+
+ return ocfs2_reflink_ioctl(inode, old_path, new_path, preserve);
default:
return -ENOTTY;
}
@@ -183,6 +196,7 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case OCFS2_IOC_GROUP_EXTEND:
case OCFS2_IOC_GROUP_ADD:
case OCFS2_IOC_GROUP_ADD64:
+ case OCFS2_IOC_REFLINK:
break;
default:
return -ENOIOCTLCMD;