--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#ifndef CEPH_MCLIENTCAPS_H
+#define CEPH_MCLIENTCAPS_H
+
+#include "msg/Message.h"
+#include "include/ceph_features.h"
+
+#define CLIENT_CAPS_SYNC (0x1)
+
+class MClientCaps : public Message {
+ static const int HEAD_VERSION = 10;
+ static const int COMPAT_VERSION = 1;
+
+ public:
+ struct ceph_mds_caps_head head;
+
+ uint64_t size, max_size, truncate_size, change_attr;
+ uint32_t truncate_seq;
+ utime_t mtime, atime, ctime, btime;
+ uint32_t time_warp_seq;
+
+ struct ceph_mds_cap_peer peer;
+
+ bufferlist snapbl;
+ bufferlist xattrbl;
+ bufferlist flockbl;
+ version_t inline_version;
+ bufferlist inline_data;
+
+ // Receivers may not use their new caps until they have this OSD map
+ epoch_t osd_epoch_barrier;
+ ceph_tid_t oldest_flush_tid;
+ uint32_t caller_uid;
+ uint32_t caller_gid;
+
+ /* advisory CLIENT_CAPS_* flags to send to mds */
+ unsigned flags;
+
+ int get_caps() { return head.caps; }
+ int get_wanted() { return head.wanted; }
+ int get_dirty() { return head.dirty; }
+ ceph_seq_t get_seq() { return head.seq; }
+ ceph_seq_t get_issue_seq() { return head.issue_seq; }
+ ceph_seq_t get_mseq() { return head.migrate_seq; }
+
+ inodeno_t get_ino() { return inodeno_t(head.ino); }
+ inodeno_t get_realm() { return inodeno_t(head.realm); }
+ uint64_t get_cap_id() { return head.cap_id; }
+
+ uint64_t get_size() { return size; }
+ uint64_t get_max_size() { return max_size; }
+ __u32 get_truncate_seq() { return truncate_seq; }
+ uint64_t get_truncate_size() { return truncate_size; }
+ utime_t get_ctime() { return ctime; }
+ utime_t get_btime() { return btime; }
+ utime_t get_mtime() { return mtime; }
+ utime_t get_atime() { return atime; }
+ __u64 get_change_attr() { return change_attr; }
+ __u32 get_time_warp_seq() { return time_warp_seq; }
+
+ const file_layout_t& get_layout() {
+ return layout;
+ }
+
+ void set_layout(const file_layout_t &l) {
+ layout = l;
+ }
+
+ int get_migrate_seq() { return head.migrate_seq; }
+ int get_op() { return head.op; }
+
+ uint64_t get_client_tid() { return get_tid(); }
+ void set_client_tid(uint64_t s) { set_tid(s); }
+
+ snapid_t get_snap_follows() { return snapid_t(head.snap_follows); }
+ void set_snap_follows(snapid_t s) { head.snap_follows = s; }
+
+ void set_caps(int c) { head.caps = c; }
+ void set_wanted(int w) { head.wanted = w; }
+
+ void set_max_size(uint64_t ms) { max_size = ms; }
+
+ void set_migrate_seq(unsigned m) { head.migrate_seq = m; }
+ void set_op(int o) { head.op = o; }
+
+ void set_size(loff_t s) { size = s; }
+ void set_mtime(const utime_t &t) { mtime = t; }
+ void set_ctime(const utime_t &t) { ctime = t; }
+ void set_atime(const utime_t &t) { atime = t; }
+
+ void set_cap_peer(uint64_t id, ceph_seq_t seq, ceph_seq_t mseq, int mds, int flags) {
+ peer.cap_id = id;
+ peer.seq = seq;
+ peer.mseq = mseq;
+ peer.mds = mds;
+ peer.flags = flags;
+ }
+
+ void set_oldest_flush_tid(ceph_tid_t tid) { oldest_flush_tid = tid; }
+ ceph_tid_t get_oldest_flush_tid() { return oldest_flush_tid; }
+
+ void clear_dirty() { head.dirty = 0; }
+
+ MClientCaps()
+ : Message(CEPH_MSG_CLIENT_CAPS, HEAD_VERSION, COMPAT_VERSION),
+ size(0),
+ max_size(0),
+ truncate_size(0),
+ change_attr(0),
+ truncate_seq(0),
+ time_warp_seq(0),
+ osd_epoch_barrier(0),
+ oldest_flush_tid(0),
+ caller_uid(0), caller_gid(0),
+ flags(0) {
+ inline_version = 0;
+ }
+ MClientCaps(int op,
+ inodeno_t ino,
+ inodeno_t realm,
+ uint64_t id,
+ long seq,
+ int caps,
+ int wanted,
+ int dirty,
+ int mseq,
+ epoch_t oeb)
+ : Message(CEPH_MSG_CLIENT_CAPS, HEAD_VERSION, COMPAT_VERSION),
+ size(0),
+ max_size(0),
+ truncate_size(0),
+ change_attr(0),
+ truncate_seq(0),
+ time_warp_seq(0),
+ osd_epoch_barrier(oeb),
+ oldest_flush_tid(0),
+ caller_uid(0), caller_gid(0),
+ flags(0) {
+ memset(&head, 0, sizeof(head));
+ head.op = op;
+ head.ino = ino;
+ head.realm = realm;
+ head.cap_id = id;
+ head.seq = seq;
+ head.caps = caps;
+ head.wanted = wanted;
+ head.dirty = dirty;
+ head.migrate_seq = mseq;
+ memset(&peer, 0, sizeof(peer));
+ inline_version = 0;
+ }
+ MClientCaps(int op,
+ inodeno_t ino, inodeno_t realm,
+ uint64_t id, int mseq, epoch_t oeb)
+ : Message(CEPH_MSG_CLIENT_CAPS, HEAD_VERSION, COMPAT_VERSION),
+ size(0),
+ max_size(0),
+ truncate_size(0),
+ change_attr(0),
+ truncate_seq(0),
+ time_warp_seq(0),
+ osd_epoch_barrier(oeb),
+ oldest_flush_tid(0),
+ caller_uid(0), caller_gid(0),
+ flags(0) {
+ memset(&head, 0, sizeof(head));
+ head.op = op;
+ head.ino = ino;
+ head.realm = realm;
+ head.cap_id = id;
+ head.migrate_seq = mseq;
+ memset(&peer, 0, sizeof(peer));
+ inline_version = 0;
+ }
+private:
+ file_layout_t layout;
+
+ ~MClientCaps() override {}
+
+public:
+ const char *get_type_name() const override { return "Cfcap";}
+ void print(ostream& out) const override {
+ out << "client_caps(" << ceph_cap_op_name(head.op)
+ << " ino " << inodeno_t(head.ino)
+ << " " << head.cap_id
+ << " seq " << head.seq;
+ if (get_tid())
+ out << " tid " << get_tid();
+ out << " caps=" << ccap_string(head.caps)
+ << " dirty=" << ccap_string(head.dirty)
+ << " wanted=" << ccap_string(head.wanted);
+ out << " follows " << snapid_t(head.snap_follows);
+ if (head.migrate_seq)
+ out << " mseq " << head.migrate_seq;
+
+ out << " size " << size << "/" << max_size;
+ if (truncate_seq)
+ out << " ts " << truncate_seq << "/" << truncate_size;
+ out << " mtime " << mtime;
+ if (time_warp_seq)
+ out << " tws " << time_warp_seq;
+
+ if (head.xattr_version)
+ out << " xattrs(v=" << head.xattr_version << " l=" << xattrbl.length() << ")";
+
+ out << ")";
+ }
+
+ void decode_payload() override {
+ bufferlist::iterator p = payload.begin();
+ ::decode(head, p);
+ ceph_mds_caps_body_legacy body;
+ ::decode(body, p);
+ if (head.op == CEPH_CAP_OP_EXPORT) {
+ peer = body.peer;
+ } else {
+ size = body.size;
+ max_size = body.max_size;
+ truncate_size = body.truncate_size;
+ truncate_seq = body.truncate_seq;
+ mtime = utime_t(body.mtime);
+ atime = utime_t(body.atime);
+ ctime = utime_t(body.ctime);
+ layout.from_legacy(body.layout);
+ time_warp_seq = body.time_warp_seq;
+ }
+ ::decode_nohead(head.snap_trace_len, snapbl, p);
+
+ assert(middle.length() == head.xattr_len);
+ if (head.xattr_len)
+ xattrbl = middle;
+
+ // conditionally decode flock metadata
+ if (header.version >= 2)
+ ::decode(flockbl, p);
+
+ if (header.version >= 3) {
+ if (head.op == CEPH_CAP_OP_IMPORT)
+ ::decode(peer, p);
+ }
+
+ if (header.version >= 4) {
+ ::decode(inline_version, p);
+ ::decode(inline_data, p);
+ } else {
+ inline_version = CEPH_INLINE_NONE;
+ }
+
+ if (header.version >= 5) {
+ ::decode(osd_epoch_barrier, p);
+ }
+ if (header.version >= 6) {
+ ::decode(oldest_flush_tid, p);
+ }
+ if (header.version >= 7) {
+ ::decode(caller_uid, p);
+ ::decode(caller_gid, p);
+ }
+ if (header.version >= 8) {
+ ::decode(layout.pool_ns, p);
+ }
+ if (header.version >= 9) {
+ ::decode(btime, p);
+ ::decode(change_attr, p);
+ }
+ if (header.version >= 10) {
+ ::decode(flags, p);
+ }
+ }
+ void encode_payload(uint64_t features) override {
+ header.version = HEAD_VERSION;
+ head.snap_trace_len = snapbl.length();
+ head.xattr_len = xattrbl.length();
+
+ ::encode(head, payload);
+ ceph_mds_caps_body_legacy body;
+ if (head.op == CEPH_CAP_OP_EXPORT) {
+ memset(&body, 0, sizeof(body));
+ body.peer = peer;
+ } else {
+ body.size = size;
+ body.max_size = max_size;
+ body.truncate_size = truncate_size;
+ body.truncate_seq = truncate_seq;
+ mtime.encode_timeval(&body.mtime);
+ atime.encode_timeval(&body.atime);
+ ctime.encode_timeval(&body.ctime);
+ layout.to_legacy(&body.layout);
+ body.time_warp_seq = time_warp_seq;
+ }
+ ::encode(body, payload);
+ ::encode_nohead(snapbl, payload);
+
+ middle = xattrbl;
+
+ // conditionally include flock metadata
+ if (features & CEPH_FEATURE_FLOCK) {
+ ::encode(flockbl, payload);
+ } else {
+ header.version = 1;
+ return;
+ }
+
+ if (features & CEPH_FEATURE_EXPORT_PEER) {
+ if (head.op == CEPH_CAP_OP_IMPORT)
+ ::encode(peer, payload);
+ } else {
+ header.version = 2;
+ return;
+ }
+
+ if (features & CEPH_FEATURE_MDS_INLINE_DATA) {
+ ::encode(inline_version, payload);
+ ::encode(inline_data, payload);
+ } else {
+ ::encode(inline_version, payload);
+ ::encode(bufferlist(), payload);
+ }
+
+ ::encode(osd_epoch_barrier, payload);
+ ::encode(oldest_flush_tid, payload);
+ ::encode(caller_uid, payload);
+ ::encode(caller_gid, payload);
+
+ ::encode(layout.pool_ns, payload);
+ ::encode(btime, payload);
+ ::encode(change_attr, payload);
+ ::encode(flags, payload);
+ }
+};
+
+#endif
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