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| author | Tao Ma <tao.ma@oracle.com> | 2009-09-21 05:25:14 +0200 |
|---|---|---|
| committer | Joel Becker <joel.becker@oracle.com> | 2009-09-23 05:09:51 +0200 |
| commit | bd50873dc725a9fa72592ecc986c58805e823051 (patch) | |
| tree | 8d2d4d514f73b6425bf0bf5bd1806949b84a2489 /fs/ocfs2/ioctl.c | |
| parent | ocfs2: Enable refcount tree support. (diff) | |
| download | linux-bd50873dc725a9fa72592ecc986c58805e823051.tar.xz linux-bd50873dc725a9fa72592ecc986c58805e823051.zip | |
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.c | 14 |
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; |