return 0;
}
+static int
+xfs_ioctl_getset_resblocks(
+ struct file *filp,
+ unsigned int cmd,
+ void __user *arg)
+{
+ struct xfs_mount *mp = XFS_I(file_inode(filp))->i_mount;
+ struct xfs_fsop_resblks fsop = { };
+ int error;
+ uint64_t in;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ if (cmd == XFS_IOC_SET_RESBLKS) {
+ if (xfs_is_readonly(mp))
+ return -EROFS;
+
+ if (copy_from_user(&fsop, arg, sizeof(fsop)))
+ return -EFAULT;
+
+ error = mnt_want_write_file(filp);
+ if (error)
+ return error;
+ in = fsop.resblks;
+ error = xfs_reserve_blocks(mp, &in, &fsop);
+ mnt_drop_write_file(filp);
+ if (error)
+ return error;
+ } else {
+ error = xfs_reserve_blocks(mp, NULL, &fsop);
+ if (error)
+ return error;
+ }
+
+ if (copy_to_user(arg, &fsop, sizeof(fsop)))
+ return -EFAULT;
+ return 0;
+}
+
/*
* These long-unused ioctls were removed from the official ioctl API in 5.17,
* but retain these definitions so that we can log warnings about them.
return 0;
}
- case XFS_IOC_SET_RESBLKS: {
- xfs_fsop_resblks_t inout;
- uint64_t in;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (xfs_is_readonly(mp))
- return -EROFS;
-
- if (copy_from_user(&inout, arg, sizeof(inout)))
- return -EFAULT;
-
- error = mnt_want_write_file(filp);
- if (error)
- return error;
-
- /* input parameter is passed in resblks field of structure */
- in = inout.resblks;
- error = xfs_reserve_blocks(mp, &in, &inout);
- mnt_drop_write_file(filp);
- if (error)
- return error;
-
- if (copy_to_user(arg, &inout, sizeof(inout)))
- return -EFAULT;
- return 0;
- }
-
- case XFS_IOC_GET_RESBLKS: {
- xfs_fsop_resblks_t out;
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- error = xfs_reserve_blocks(mp, NULL, &out);
- if (error)
- return error;
-
- if (copy_to_user(arg, &out, sizeof(out)))
- return -EFAULT;
-
- return 0;
- }
+ case XFS_IOC_SET_RESBLKS:
+ case XFS_IOC_GET_RESBLKS:
+ return xfs_ioctl_getset_resblocks(filp, cmd, arg);
case XFS_IOC_FSGROWFSDATA: {
struct xfs_growfs_data in;