LASSERT(lmm != NULL);
if ((lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V1)) &&
- (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3)) &&
- (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_JOIN))) {
+ (lmm->lmm_magic != cpu_to_le32(LOV_MAGIC_V3))) {
GOTO(out, rc = -EPROTO);
}
lustre_swab_lov_user_md_objects(
((struct lov_user_md_v3 *)lmm)->lmm_objects,
((struct lov_user_md_v3 *)lmm)->lmm_stripe_count);
- } else if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_JOIN)) {
- lustre_swab_lov_user_md_join((struct lov_user_md_join *)lmm);
}
}
- if (lmm->lmm_magic == LOV_MAGIC_JOIN) {
- struct lov_stripe_md *lsm;
- struct lov_user_md_join *lmj;
- int lmj_size, i, aindex = 0;
-
- rc = obd_unpackmd(sbi->ll_dt_exp, &lsm, lmm, lmmsize);
- if (rc < 0)
- GOTO(out, rc = -ENOMEM);
- rc = obd_checkmd(sbi->ll_dt_exp, sbi->ll_md_exp, lsm);
- if (rc)
- GOTO(out_free_memmd, rc);
-
- lmj_size = sizeof(struct lov_user_md_join) +
- lsm->lsm_stripe_count *
- sizeof(struct lov_user_ost_data_join);
- OBD_ALLOC(lmj, lmj_size);
- if (!lmj)
- GOTO(out_free_memmd, rc = -ENOMEM);
-
- memcpy(lmj, lmm, sizeof(struct lov_user_md_join));
- for (i = 0; i < lsm->lsm_stripe_count; i++) {
- struct lov_extent *lex =
- &lsm->lsm_array->lai_ext_array[aindex];
-
- if (lex->le_loi_idx + lex->le_stripe_count <= i)
- aindex ++;
- CDEBUG(D_INFO, "aindex %d i %d l_extent_start "
- LPU64" len %d\n", aindex, i,
- lex->le_start, (int)lex->le_len);
- lmj->lmm_objects[i].l_extent_start =
- lex->le_start;
-
- if ((int)lex->le_len == -1)
- lmj->lmm_objects[i].l_extent_end = -1;
- else
- lmj->lmm_objects[i].l_extent_end =
- lex->le_start + lex->le_len;
- lmj->lmm_objects[i].l_object_id =
- lsm->lsm_oinfo[i]->loi_id;
- lmj->lmm_objects[i].l_object_gr =
- lsm->lsm_oinfo[i]->loi_gr;
- lmj->lmm_objects[i].l_ost_gen =
- lsm->lsm_oinfo[i]->loi_ost_gen;
- lmj->lmm_objects[i].l_ost_idx =
- lsm->lsm_oinfo[i]->loi_ost_idx;
- }
- lmm = (struct lov_mds_md *)lmj;
- lmmsize = lmj_size;
-out_free_memmd:
- obd_free_memmd(sbi->ll_dt_exp, &lsm);
- }
out:
*lmmp = lmm;
*lmm_size = lmmsize;
RETURN(0);
}
-#if LUSTRE_FIX >= 50
-static int join_sanity_check(struct inode *head, struct inode *tail)
-{
- ENTRY;
- if ((ll_i2sbi(head)->ll_flags & LL_SBI_JOIN) == 0) {
- CERROR("server do not support join \n");
- RETURN(-EINVAL);
- }
- if (!S_ISREG(tail->i_mode) || !S_ISREG(head->i_mode)) {
- CERROR("tail ino %lu and ino head %lu must be regular\n",
- head->i_ino, tail->i_ino);
- RETURN(-EINVAL);
- }
- if (head->i_ino == tail->i_ino) {
- CERROR("file %lu can not be joined to itself \n", head->i_ino);
- RETURN(-EINVAL);
- }
- if (i_size_read(head) % JOIN_FILE_ALIGN) {
- CERROR("hsize %llu must be times of 64K\n", i_size_read(head));
- RETURN(-EINVAL);
- }
- RETURN(0);
-}
-
-static int join_file(struct inode *head_inode, struct file *head_filp,
- struct file *tail_filp)
-{
- struct dentry *tail_dentry = tail_filp->f_dentry;
- struct lookup_intent oit = {.it_op = IT_OPEN,
- .it_flags = head_filp->f_flags,
- .it_create_mode = M_JOIN_FILE};
- struct ldlm_enqueue_info einfo = { LDLM_IBITS, LCK_CW,
- ll_md_blocking_ast, ldlm_completion_ast, NULL, NULL, NULL };
-
- struct lustre_handle lockh;
- struct md_op_data *op_data;
- int rc;
- loff_t data;
- ENTRY;
-
- tail_dentry = tail_filp->f_dentry;
-
- data = i_size_read(head_inode);
- op_data = ll_prep_md_op_data(NULL, head_inode,
- tail_dentry->d_parent->d_inode,
- tail_dentry->d_name.name,
- tail_dentry->d_name.len, 0,
- LUSTRE_OPC_ANY, &data);
- if (IS_ERR(op_data))
- RETURN(PTR_ERR(op_data));
-
- rc = md_enqueue(ll_i2mdexp(head_inode), &einfo, &oit,
- op_data, &lockh, NULL, 0, NULL, 0);
-
- ll_finish_md_op_data(op_data);
- if (rc < 0)
- GOTO(out, rc);
-
- rc = oit.d.lustre.it_status;
-
- if (rc < 0 || it_open_error(DISP_OPEN_OPEN, &oit)) {
- rc = rc ? rc : it_open_error(DISP_OPEN_OPEN, &oit);
- ptlrpc_req_finished((struct ptlrpc_request *)
- oit.d.lustre.it_data);
- GOTO(out, rc);
- }
-
- if (oit.d.lustre.it_lock_mode) { /* If we got lock - release it right
- * away */
- ldlm_lock_decref(&lockh, oit.d.lustre.it_lock_mode);
- oit.d.lustre.it_lock_mode = 0;
- }
- ptlrpc_req_finished((struct ptlrpc_request *) oit.d.lustre.it_data);
- it_clear_disposition(&oit, DISP_ENQ_COMPLETE);
- ll_release_openhandle(head_filp->f_dentry, &oit);
-out:
- ll_intent_release(&oit);
- RETURN(rc);
-}
-
-static int ll_file_join(struct inode *head, struct file *filp,
- char *filename_tail)
-{
- struct inode *tail = NULL, *first = NULL, *second = NULL;
- struct dentry *tail_dentry;
- struct file *tail_filp, *first_filp, *second_filp;
- struct ll_lock_tree first_tree, second_tree;
- struct ll_lock_tree_node *first_node, *second_node;
- struct ll_inode_info *hlli = ll_i2info(head);
- int rc = 0, cleanup_phase = 0;
- ENTRY;
-
- CDEBUG(D_VFSTRACE, "VFS Op:head=%lu/%u(%p) tail %s\n",
- head->i_ino, head->i_generation, head, filename_tail);
-
- tail_filp = filp_open(filename_tail, O_WRONLY, 0644);
- if (IS_ERR(tail_filp)) {
- CERROR("Can not open tail file %s", filename_tail);
- rc = PTR_ERR(tail_filp);
- GOTO(cleanup, rc);
- }
- tail = igrab(tail_filp->f_dentry->d_inode);
-
- tail_dentry = tail_filp->f_dentry;
- LASSERT(tail_dentry);
- cleanup_phase = 1;
-
- /*reorder the inode for lock sequence*/
- first = head->i_ino > tail->i_ino ? head : tail;
- second = head->i_ino > tail->i_ino ? tail : head;
- first_filp = head->i_ino > tail->i_ino ? filp : tail_filp;
- second_filp = head->i_ino > tail->i_ino ? tail_filp : filp;
-
- CDEBUG(D_INFO, "reorder object from %lu:%lu to %lu:%lu \n",
- head->i_ino, tail->i_ino, first->i_ino, second->i_ino);
- first_node = ll_node_from_inode(first, 0, OBD_OBJECT_EOF, LCK_EX);
- if (IS_ERR(first_node)){
- rc = PTR_ERR(first_node);
- GOTO(cleanup, rc);
- }
- first_tree.lt_fd = first_filp->private_data;
- rc = ll_tree_lock(&first_tree, first_node, NULL, 0, 0);
- if (rc != 0)
- GOTO(cleanup, rc);
- cleanup_phase = 2;
-
- second_node = ll_node_from_inode(second, 0, OBD_OBJECT_EOF, LCK_EX);
- if (IS_ERR(second_node)){
- rc = PTR_ERR(second_node);
- GOTO(cleanup, rc);
- }
- second_tree.lt_fd = second_filp->private_data;
- rc = ll_tree_lock(&second_tree, second_node, NULL, 0, 0);
- if (rc != 0)
- GOTO(cleanup, rc);
- cleanup_phase = 3;
-
- rc = join_sanity_check(head, tail);
- if (rc)
- GOTO(cleanup, rc);
-
- rc = join_file(head, filp, tail_filp);
- if (rc)
- GOTO(cleanup, rc);
-cleanup:
- switch (cleanup_phase) {
- case 3:
- ll_tree_unlock(&second_tree);
- obd_cancel_unused(ll_i2dtexp(second),
- ll_i2info(second)->lli_smd, 0, NULL);
- case 2:
- ll_tree_unlock(&first_tree);
- obd_cancel_unused(ll_i2dtexp(first),
- ll_i2info(first)->lli_smd, 0, NULL);
- case 1:
- filp_close(tail_filp, 0);
- if (tail)
- iput(tail);
- if (head && rc == 0) {
- obd_free_memmd(ll_i2sbi(head)->ll_dt_exp,
- &hlli->lli_smd);
- hlli->lli_smd = NULL;
- }
- case 0:
- break;
- default:
- CERROR("invalid cleanup_phase %d\n", cleanup_phase);
- LBUG();
- }
- RETURN(rc);
-}
-#endif /* LUSTRE_FIX >= 50 */
-
/**
* Close inode open handle
*
case FSFILT_IOC_GETVERSION_OLD:
case FSFILT_IOC_GETVERSION:
RETURN(put_user(inode->i_generation, (int *)arg));
- case LL_IOC_JOIN: {
-#if LUSTRE_FIX >= 50
- /* Allow file join in beta builds to allow debuggging */
- char *ftail;
- int rc;
-
- ftail = getname((const char *)arg);
- if (IS_ERR(ftail))
- RETURN(PTR_ERR(ftail));
- rc = ll_file_join(inode, file, ftail);
- putname(ftail);
- RETURN(rc);
-#else
- CWARN("file join is not supported in this version of Lustre\n");
- RETURN(-ENOTTY);
-#endif
- }
case LL_IOC_GROUP_LOCK:
RETURN(ll_get_grouplock(inode, file, arg));
case LL_IOC_GROUP_UNLOCK:
git://git.whamcloud.com / fs / lustre-release.git / blobdiff