cluster/ec: Added erasure code translator

Change-Id: I293917501d5c2ca4cdc6303df30cf0b568cea361
BUG: 1118629
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/7749
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/xlators/cluster/ec/src/ec-common.h b/xlators/cluster/ec/src/ec-common.h
new file mode 100644
index 00000000000..83f3ba9637e
--- /dev/null
+++ b/xlators/cluster/ec/src/ec-common.h
@@ -0,0 +1,105 @@
+/*
+  Copyright (c) 2012 DataLab, s.l. <http://www.datalab.es>
+
+  This file is part of the cluster/ec translator for GlusterFS.
+
+  The cluster/ec translator for GlusterFS is free software: you can
+  redistribute it and/or modify it under the terms of the GNU General
+  Public License as published by the Free Software Foundation, either
+  version 3 of the License, or (at your option) any later version.
+
+  The cluster/ec translator for GlusterFS is distributed in the hope
+  that it will be useful, but WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+  PURPOSE. See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with the cluster/ec translator for GlusterFS. If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __EC_COMMON_H__
+#define __EC_COMMON_H__
+
+#include "xlator.h"
+
+#include "ec-data.h"
+
+#define EC_FLAG_UPDATE_LOC_PARENT 0x0001
+#define EC_FLAG_UPDATE_LOC_INODE  0x0002
+#define EC_FLAG_UPDATE_FD         0x0004
+#define EC_FLAG_UPDATE_FD_INODE   0x0008
+
+#define EC_FLAG_WAITING_WINDS     0x0010
+
+#define EC_MINIMUM_ONE   -1
+#define EC_MINIMUM_MIN   -2
+#define EC_MINIMUM_ALL   -3
+
+#define EC_LOCK_ENTRY   0
+#define EC_LOCK_INODE   1
+
+#define EC_STATE_START                        0
+#define EC_STATE_END                          0
+#define EC_STATE_INIT                         1
+#define EC_STATE_LOCK                         2
+#define EC_STATE_GET_SIZE_AND_VERSION         3
+#define EC_STATE_DISPATCH                     4
+#define EC_STATE_PREPARE_ANSWER               5
+#define EC_STATE_REPORT                       6
+#define EC_STATE_UPDATE_SIZE_AND_VERSION      7
+#define EC_STATE_UNLOCK                       8
+
+#define EC_STATE_WRITE_START                100
+
+#define EC_STATE_HEAL_ENTRY_LOOKUP          200
+#define EC_STATE_HEAL_ENTRY_PREPARE         201
+#define EC_STATE_HEAL_PRE_INODELK_LOCK      202
+#define EC_STATE_HEAL_PRE_INODE_LOOKUP      203
+#define EC_STATE_HEAL_XATTRIBUTES_REMOVE    204
+#define EC_STATE_HEAL_XATTRIBUTES_SET       205
+#define EC_STATE_HEAL_ATTRIBUTES            206
+#define EC_STATE_HEAL_OPEN                  207
+#define EC_STATE_HEAL_REOPEN_FD             208
+#define EC_STATE_HEAL_UNLOCK                209
+#define EC_STATE_HEAL_DATA_LOCK             210
+#define EC_STATE_HEAL_DATA_COPY             211
+#define EC_STATE_HEAL_DATA_UNLOCK           212
+#define EC_STATE_HEAL_POST_INODELK_LOCK     213
+#define EC_STATE_HEAL_POST_INODE_LOOKUP     214
+#define EC_STATE_HEAL_SETATTR               215
+#define EC_STATE_HEAL_POST_INODELK_UNLOCK   216
+#define EC_STATE_HEAL_DISPATCH              217
+
+int32_t ec_dispatch_one_retry(ec_fop_data_t * fop, int32_t idx, int32_t op_ret,
+                              int32_t op_errno);
+int32_t ec_dispatch_next(ec_fop_data_t * fop, int32_t idx);
+
+void ec_complete(ec_fop_data_t * fop);
+
+void ec_update_bad(ec_fop_data_t * fop, uintptr_t good);
+
+void ec_fop_set_error(ec_fop_data_t * fop, int32_t error);
+
+void ec_lock_inode(ec_fop_data_t * fop, loc_t * loc);
+void ec_lock_entry(ec_fop_data_t * fop, loc_t * loc);
+void ec_lock_fd(ec_fop_data_t * fop, fd_t * fd);
+
+void ec_unlock(ec_fop_data_t * fop);
+
+void ec_get_size_version(ec_fop_data_t * fop);
+void ec_update_size_version(ec_fop_data_t * fop);
+
+void ec_dispatch_all(ec_fop_data_t * fop);
+void ec_dispatch_inc(ec_fop_data_t * fop);
+void ec_dispatch_min(ec_fop_data_t * fop);
+void ec_dispatch_one(ec_fop_data_t * fop);
+
+void ec_wait_winds(ec_fop_data_t * fop);
+
+void ec_resume_parent(ec_fop_data_t * fop, int32_t error);
+void ec_report(ec_fop_data_t * fop, int32_t error);
+
+void ec_manager(ec_fop_data_t * fop, int32_t error);
+
+#endif /* __EC_COMMON_H__ */