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Diffstat (limited to '')
| -rw-r--r-- | src/messages/MClientRequest.h | 329 |
1 files changed, 329 insertions, 0 deletions
diff --git a/src/messages/MClientRequest.h b/src/messages/MClientRequest.h new file mode 100644 index 000000000..c51f1149e --- /dev/null +++ b/src/messages/MClientRequest.h @@ -0,0 +1,329 @@ +// -*- 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_MCLIENTREQUEST_H +#define CEPH_MCLIENTREQUEST_H + +/** + * + * MClientRequest - container for a client METADATA request. created/sent by clients. + * can be forwarded around between MDS's. + * + * int client - the originating client + * long tid - transaction id, unique among requests for that client. probably just a counter! + * -> the MDS passes the Request to the Reply constructor, so this always matches. + * + * int op - the metadata op code. MDS_OP_RENAME, etc. + * int caller_uid, _gid - guess + * + * fixed size arguments are in a union. + * there's also a string argument, for e.g. symlink(). + * + */ + +#include <string_view> + +#include "include/filepath.h" +#include "mds/mdstypes.h" +#include "include/ceph_features.h" +#include "messages/MMDSOp.h" + +#include <sys/types.h> +#include <utime.h> +#include <sys/stat.h> +#include <fcntl.h> + +struct SnapPayload { + std::map<std::string, std::string> metadata; + + void encode(ceph::buffer::list &bl) const { + ENCODE_START(1, 1, bl); + encode(metadata, bl); + ENCODE_FINISH(bl); + } + + void decode(ceph::buffer::list::const_iterator &iter) { + DECODE_START(1, iter); + decode(metadata, iter); + DECODE_FINISH(iter); + } +}; + +WRITE_CLASS_ENCODER(SnapPayload) + +// metadata ops. + +class MClientRequest final : public MMDSOp { +private: + static constexpr int HEAD_VERSION = 5; + static constexpr int COMPAT_VERSION = 1; + +public: + mutable struct ceph_mds_request_head head; /* XXX HACK! */ + utime_t stamp; + + struct Release { + mutable ceph_mds_request_release item; + std::string dname; + + Release() : item(), dname() {} + Release(const ceph_mds_request_release& rel, std::string name) : + item(rel), dname(name) {} + + void encode(ceph::buffer::list& bl) const { + using ceph::encode; + item.dname_len = dname.length(); + encode(item, bl); + ceph::encode_nohead(dname, bl); + } + void decode(ceph::buffer::list::const_iterator& bl) { + using ceph::decode; + decode(item, bl); + ceph::decode_nohead(item.dname_len, dname, bl); + } + }; + mutable std::vector<Release> releases; /* XXX HACK! */ + + // path arguments + filepath path, path2; + std::string alternate_name; + std::vector<uint64_t> gid_list; + + /* XXX HACK */ + mutable bool queued_for_replay = false; + +protected: + // cons + MClientRequest() + : MMDSOp(CEPH_MSG_CLIENT_REQUEST, HEAD_VERSION, COMPAT_VERSION) {} + MClientRequest(int op) + : MMDSOp(CEPH_MSG_CLIENT_REQUEST, HEAD_VERSION, COMPAT_VERSION) { + memset(&head, 0, sizeof(head)); + head.op = op; + } + ~MClientRequest() final {} + +public: + void set_mdsmap_epoch(epoch_t e) { head.mdsmap_epoch = e; } + epoch_t get_mdsmap_epoch() const { return head.mdsmap_epoch; } + epoch_t get_osdmap_epoch() const { + ceph_assert(head.op == CEPH_MDS_OP_SETXATTR); + if (header.version >= 3) + return head.args.setxattr.osdmap_epoch; + else + return 0; + } + void set_osdmap_epoch(epoch_t e) { + ceph_assert(head.op == CEPH_MDS_OP_SETXATTR); + head.args.setxattr.osdmap_epoch = e; + } + + metareqid_t get_reqid() const { + // FIXME: for now, assume clients always have 1 incarnation + return metareqid_t(get_orig_source(), header.tid); + } + + /*bool open_file_mode_is_readonly() { + return file_mode_is_readonly(ceph_flags_to_mode(head.args.open.flags)); + }*/ + bool may_write() const { + return + (head.op & CEPH_MDS_OP_WRITE) || + (head.op == CEPH_MDS_OP_OPEN && (head.args.open.flags & (O_CREAT|O_TRUNC))); + } + + int get_flags() const { + return head.flags; + } + bool is_replay() const { + return get_flags() & CEPH_MDS_FLAG_REPLAY; + } + bool is_async() const { + return get_flags() & CEPH_MDS_FLAG_ASYNC; + } + + // normal fields + void set_stamp(utime_t t) { stamp = t; } + void set_oldest_client_tid(ceph_tid_t t) { head.oldest_client_tid = t; } + void inc_num_fwd() { head.num_fwd = head.num_fwd + 1; } + void set_retry_attempt(int a) { head.num_retry = a; } + void set_filepath(const filepath& fp) { path = fp; } + void set_filepath2(const filepath& fp) { path2 = fp; } + void set_string2(const char *s) { path2.set_path(std::string_view(s), 0); } + void set_caller_uid(unsigned u) { head.caller_uid = u; } + void set_caller_gid(unsigned g) { head.caller_gid = g; } + void set_gid_list(int count, const gid_t *gids) { + gid_list.reserve(count); + for (int i = 0; i < count; ++i) { + gid_list.push_back(gids[i]); + } + } + void set_dentry_wanted() { + head.flags = head.flags | CEPH_MDS_FLAG_WANT_DENTRY; + } + void set_replayed_op() { + head.flags = head.flags | CEPH_MDS_FLAG_REPLAY; + } + void set_async_op() { + head.flags = head.flags | CEPH_MDS_FLAG_ASYNC; + } + + void set_alternate_name(std::string _alternate_name) { + alternate_name = std::move(_alternate_name); + } + void set_alternate_name(bufferptr&& cipher) { + alternate_name = std::move(cipher.c_str()); + } + + utime_t get_stamp() const { return stamp; } + ceph_tid_t get_oldest_client_tid() const { return head.oldest_client_tid; } + int get_num_fwd() const { return head.num_fwd; } + int get_retry_attempt() const { return head.num_retry; } + int get_op() const { return head.op; } + unsigned get_caller_uid() const { return head.caller_uid; } + unsigned get_caller_gid() const { return head.caller_gid; } + const std::vector<uint64_t>& get_caller_gid_list() const { return gid_list; } + + const std::string& get_path() const { return path.get_path(); } + const filepath& get_filepath() const { return path; } + const std::string& get_path2() const { return path2.get_path(); } + const filepath& get_filepath2() const { return path2; } + std::string_view get_alternate_name() const { return std::string_view(alternate_name); } + + int get_dentry_wanted() const { return get_flags() & CEPH_MDS_FLAG_WANT_DENTRY; } + + void mark_queued_for_replay() const { queued_for_replay = true; } + bool is_queued_for_replay() const { return queued_for_replay; } + + void decode_payload() override { + using ceph::decode; + auto p = payload.cbegin(); + + if (header.version >= 4) { + decode(head, p); + } else { + struct ceph_mds_request_head_legacy old_mds_head; + + decode(old_mds_head, p); + copy_from_legacy_head(&head, &old_mds_head); + head.version = 0; + + /* Can't set the btime from legacy struct */ + if (head.op == CEPH_MDS_OP_SETATTR) { + int localmask = head.args.setattr.mask; + + localmask &= ~CEPH_SETATTR_BTIME; + + head.args.setattr.btime = { init_le32(0), init_le32(0) }; + head.args.setattr.mask = localmask; + } + } + + decode(path, p); + decode(path2, p); + ceph::decode_nohead(head.num_releases, releases, p); + if (header.version >= 2) + decode(stamp, p); + if (header.version >= 4) // epoch 3 was for a ceph_mds_request_args change + decode(gid_list, p); + if (header.version >= 5) + decode(alternate_name, p); + } + + void encode_payload(uint64_t features) override { + using ceph::encode; + head.num_releases = releases.size(); + head.version = CEPH_MDS_REQUEST_HEAD_VERSION; + + if (features & CEPH_FEATURE_FS_BTIME) { + encode(head, payload); + } else { + struct ceph_mds_request_head_legacy old_mds_head; + + copy_to_legacy_head(&old_mds_head, &head); + encode(old_mds_head, payload); + } + + encode(path, payload); + encode(path2, payload); + ceph::encode_nohead(releases, payload); + encode(stamp, payload); + encode(gid_list, payload); + encode(alternate_name, payload); + } + + std::string_view get_type_name() const override { return "creq"; } + void print(std::ostream& out) const override { + out << "client_request(" << get_orig_source() + << ":" << get_tid() + << " " << ceph_mds_op_name(get_op()); + if (head.op == CEPH_MDS_OP_GETATTR) + out << " " << ccap_string(head.args.getattr.mask); + if (head.op == CEPH_MDS_OP_SETATTR) { + if (head.args.setattr.mask & CEPH_SETATTR_MODE) + out << " mode=0" << std::oct << head.args.setattr.mode << std::dec; + if (head.args.setattr.mask & CEPH_SETATTR_UID) + out << " uid=" << head.args.setattr.uid; + if (head.args.setattr.mask & CEPH_SETATTR_GID) + out << " gid=" << head.args.setattr.gid; + if (head.args.setattr.mask & CEPH_SETATTR_SIZE) + out << " size=" << head.args.setattr.size; + if (head.args.setattr.mask & CEPH_SETATTR_MTIME) + out << " mtime=" << utime_t(head.args.setattr.mtime); + if (head.args.setattr.mask & CEPH_SETATTR_ATIME) + out << " atime=" << utime_t(head.args.setattr.atime); + } + if (head.op == CEPH_MDS_OP_SETFILELOCK || + head.op == CEPH_MDS_OP_GETFILELOCK) { + out << " rule " << (int)head.args.filelock_change.rule + << ", type " << (int)head.args.filelock_change.type + << ", owner " << head.args.filelock_change.owner + << ", pid " << head.args.filelock_change.pid + << ", start " << head.args.filelock_change.start + << ", length " << head.args.filelock_change.length + << ", wait " << (int)head.args.filelock_change.wait; + } + //if (!get_filepath().empty()) + out << " " << get_filepath(); + if (alternate_name.size()) + out << " (" << alternate_name << ") "; + if (!get_filepath2().empty()) + out << " " << get_filepath2(); + if (stamp != utime_t()) + out << " " << stamp; + if (head.num_retry) + out << " RETRY=" << (int)head.num_retry; + if (is_async()) + out << " ASYNC"; + if (is_replay()) + out << " REPLAY"; + if (queued_for_replay) + out << " QUEUED_FOR_REPLAY"; + out << " caller_uid=" << head.caller_uid + << ", caller_gid=" << head.caller_gid + << '{'; + for (auto i = gid_list.begin(); i != gid_list.end(); ++i) + out << *i << ','; + out << '}' + << ")"; + } +private: + template<class T, typename... Args> + friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args); +}; + +WRITE_CLASS_ENCODER(MClientRequest::Release) + +#endif |