diff options
Diffstat (limited to 'fs/ceph/ioctl.c')
| -rw-r--r-- | fs/ceph/ioctl.c | 49 |
1 files changed, 42 insertions, 7 deletions
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index ef0b5f48e13a..5a14c29cbba6 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -38,21 +38,43 @@ static long ceph_ioctl_get_layout(struct file *file, void __user *arg) static long ceph_ioctl_set_layout(struct file *file, void __user *arg) { struct inode *inode = file->f_dentry->d_inode; - struct inode *parent_inode = file->f_dentry->d_parent->d_inode; + struct inode *parent_inode; struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; struct ceph_mds_request *req; struct ceph_ioctl_layout l; + struct ceph_inode_info *ci = ceph_inode(file->f_dentry->d_inode); + struct ceph_ioctl_layout nl; int err, i; - /* copy and validate */ if (copy_from_user(&l, arg, sizeof(l))) return -EFAULT; - if ((l.object_size & ~PAGE_MASK) || - (l.stripe_unit & ~PAGE_MASK) || - !l.stripe_unit || - (l.object_size && - (unsigned)l.object_size % (unsigned)l.stripe_unit)) + /* validate changed params against current layout */ + err = ceph_do_getattr(file->f_dentry->d_inode, CEPH_STAT_CAP_LAYOUT); + if (!err) { + nl.stripe_unit = ceph_file_layout_su(ci->i_layout); + nl.stripe_count = ceph_file_layout_stripe_count(ci->i_layout); + nl.object_size = ceph_file_layout_object_size(ci->i_layout); + nl.data_pool = le32_to_cpu(ci->i_layout.fl_pg_pool); + nl.preferred_osd = + (s32)le32_to_cpu(ci->i_layout.fl_pg_preferred); + } else + return err; + + if (l.stripe_count) + nl.stripe_count = l.stripe_count; + if (l.stripe_unit) + nl.stripe_unit = l.stripe_unit; + if (l.object_size) + nl.object_size = l.object_size; + if (l.data_pool) + nl.data_pool = l.data_pool; + if (l.preferred_osd) + nl.preferred_osd = l.preferred_osd; + + if ((nl.object_size & ~PAGE_MASK) || + (nl.stripe_unit & ~PAGE_MASK) || + ((unsigned)nl.object_size % (unsigned)nl.stripe_unit)) return -EINVAL; /* make sure it's a valid data pool */ @@ -87,7 +109,9 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg) req->r_args.setlayout.layout.fl_pg_preferred = cpu_to_le32(l.preferred_osd); + parent_inode = ceph_get_dentry_parent_inode(file->f_dentry); err = ceph_mdsc_do_request(mdsc, parent_inode, req); + iput(parent_inode); ceph_mdsc_put_request(req); return err; } @@ -231,6 +255,14 @@ static long ceph_ioctl_lazyio(struct file *file) return 0; } +static long ceph_ioctl_syncio(struct file *file) +{ + struct ceph_file_info *fi = file->private_data; + + fi->flags |= CEPH_F_SYNC; + return 0; +} + long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { dout("ioctl file %p cmd %u arg %lu\n", file, cmd, arg); @@ -249,6 +281,9 @@ long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case CEPH_IOC_LAZYIO: return ceph_ioctl_lazyio(file); + + case CEPH_IOC_SYNCIO: + return ceph_ioctl_syncio(file); } return -ENOTTY; |