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-rw-r--r--fs/ceph/ioctl.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index 8e3fb69fbe6..36549a46e31 100644
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -42,7 +42,8 @@ static long __validate_layout(struct ceph_mds_client *mdsc,
/* validate striping parameters */
if ((l->object_size & ~PAGE_MASK) ||
(l->stripe_unit & ~PAGE_MASK) ||
- ((unsigned)l->object_size % (unsigned)l->stripe_unit))
+ (l->stripe_unit != 0 &&
+ ((unsigned)l->object_size % (unsigned)l->stripe_unit)))
return -EINVAL;
/* make sure it's a valid data pool */
@@ -186,14 +187,18 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
u64 tmp;
struct ceph_object_layout ol;
struct ceph_pg pgid;
+ int r;
/* copy and validate */
if (copy_from_user(&dl, arg, sizeof(dl)))
return -EFAULT;
down_read(&osdc->map_sem);
- ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, &len,
- &dl.object_no, &dl.object_offset, &olen);
+ r = ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, &len,
+ &dl.object_no, &dl.object_offset,
+ &olen);
+ if (r < 0)
+ return -EIO;
dl.file_offset -= dl.object_offset;
dl.object_size = ceph_file_layout_object_size(ci->i_layout);
dl.block_size = ceph_file_layout_su(ci->i_layout);