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authorMark Fasheh <mark.fasheh@oracle.com>2007-03-09 16:53:21 -0800
committerMark Fasheh <mark.fasheh@oracle.com>2007-07-10 17:32:09 -0700
commitb25801038da5823bba1b5440a57ca68afc51b6bd (patch)
tree3a6f10f8ddb3a7552630d60aabbb790d1b5a7a77 /fs/ocfs2/ioctl.c
parent063c4561f52a74de686fe0ff2f96f4f54c9fecd2 (diff)
ocfs2: Support xfs style space reservation ioctls
We re-use the RESVSP/UNRESVSP ioctls from xfs which allow the user to allocate and deallocate regions to a file without zeroing data or changing i_size. Though renamed, the structure passed in from user is identical to struct xfs_flock64. The three fields that are actually used right now are l_whence, l_start and l_len. This should get ocfs2 immediate compatibility with userspace software using the pre-existing xfs ioctls. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/ioctl.c')
-rw-r--r--fs/ocfs2/ioctl.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index f3ad21ad9aed..bd68c3f2afbe 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -14,6 +14,7 @@
#include "ocfs2.h"
#include "alloc.h"
#include "dlmglue.h"
+#include "file.h"
#include "inode.h"
#include "journal.h"
@@ -115,6 +116,7 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
{
unsigned int flags;
int status;
+ struct ocfs2_space_resv sr;
switch (cmd) {
case OCFS2_IOC_GETFLAGS:
@@ -130,6 +132,14 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
return ocfs2_set_inode_attr(inode, flags,
OCFS2_FL_MODIFIABLE);
+ case OCFS2_IOC_RESVSP:
+ case OCFS2_IOC_RESVSP64:
+ case OCFS2_IOC_UNRESVSP:
+ case OCFS2_IOC_UNRESVSP64:
+ if (copy_from_user(&sr, (int __user *) arg, sizeof(sr)))
+ return -EFAULT;
+
+ return ocfs2_change_file_space(filp, cmd, &sr);
default:
return -ENOTTY;
}
@@ -148,6 +158,11 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case OCFS2_IOC32_SETFLAGS:
cmd = OCFS2_IOC_SETFLAGS;
break;
+ case OCFS2_IOC_RESVSP:
+ case OCFS2_IOC_RESVSP64:
+ case OCFS2_IOC_UNRESVSP:
+ case OCFS2_IOC_UNRESVSP64:
+ break;
default:
return -ENOIOCTLCMD;
}