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| author | Mark Fasheh <mark.fasheh@oracle.com> | 2007-03-10 03:53:21 +0300 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2007-07-11 04:32:09 +0400 |
| commit | b25801038da5823bba1b5440a57ca68afc51b6bd (patch) | |
| tree | 3a6f10f8ddb3a7552630d60aabbb790d1b5a7a77 /fs/ocfs2/ioctl.c | |
| parent | 063c4561f52a74de686fe0ff2f96f4f54c9fecd2 (diff) | |
| download | linux-b25801038da5823bba1b5440a57ca68afc51b6bd.tar.xz | |
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.c | 15 |
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; } |