--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_CLIENT_METAREQUEST_H
+#define CEPH_CLIENT_METAREQUEST_H
+
+
+#include "include/types.h"
+#include "include/xlist.h"
+#include "include/filepath.h"
+#include "mds/mdstypes.h"
+#include "InodeRef.h"
+#include "UserPerm.h"
+
+#include "messages/MClientRequest.h"
+
+class MClientReply;
+class Dentry;
+class dir_result_t;
+
+struct MetaRequest {
+private:
+ InodeRef _inode, _old_inode, _other_inode;
+ Dentry *_dentry; //associated with path
+ Dentry *_old_dentry; //associated with path2
+ int abort_rc;
+public:
+ uint64_t tid;
+ utime_t op_stamp;
+ ceph_mds_request_head head;
+ filepath path, path2;
+ bufferlist data;
+ int inode_drop; //the inode caps this operation will drop
+ int inode_unless; //unless we have these caps already
+ int old_inode_drop, old_inode_unless;
+ int dentry_drop, dentry_unless;
+ int old_dentry_drop, old_dentry_unless;
+ int other_inode_drop, other_inode_unless;
+ vector<MClientRequest::Release> cap_releases;
+
+ int regetattr_mask; // getattr mask if i need to re-stat after a traceless reply
+
+ utime_t sent_stamp;
+ mds_rank_t mds; // who i am asking
+ mds_rank_t resend_mds; // someone wants you to (re)send the request here
+ bool send_to_auth; // must send to auth mds
+ __u32 sent_on_mseq; // mseq at last submission of this request
+ int num_fwd; // # of times i've been forwarded
+ int retry_attempt;
+ std::atomic<uint64_t> ref = { 1 };
+
+ MClientReply *reply; // the reply
+ bool kick;
+ bool success;
+
+ // readdir result
+ dir_result_t *dirp;
+
+ //possible responses
+ bool got_unsafe;
+
+ xlist<MetaRequest*>::item item;
+ xlist<MetaRequest*>::item unsafe_item;
+ xlist<MetaRequest*>::item unsafe_dir_item;
+ xlist<MetaRequest*>::item unsafe_target_item;
+
+ Cond *caller_cond; // who to take up
+ Cond *dispatch_cond; // who to kick back
+ list<Cond*> waitfor_safe;
+
+ InodeRef target;
+ UserPerm perms;
+
+ explicit MetaRequest(int op) :
+ _dentry(NULL), _old_dentry(NULL), abort_rc(0),
+ tid(0),
+ inode_drop(0), inode_unless(0),
+ old_inode_drop(0), old_inode_unless(0),
+ dentry_drop(0), dentry_unless(0),
+ old_dentry_drop(0), old_dentry_unless(0),
+ other_inode_drop(0), other_inode_unless(0),
+ regetattr_mask(0),
+ mds(-1), resend_mds(-1), send_to_auth(false), sent_on_mseq(0),
+ num_fwd(0), retry_attempt(0),
+ reply(0),
+ kick(false), success(false),
+ got_unsafe(false), item(this), unsafe_item(this),
+ unsafe_dir_item(this), unsafe_target_item(this),
+ caller_cond(0), dispatch_cond(0) {
+ memset(&head, 0, sizeof(head));
+ head.op = op;
+ }
+ ~MetaRequest();
+
+ /**
+ * Prematurely terminate the request, such that callers
+ * to make_request will receive `rc` as their result.
+ */
+ void abort(int rc)
+ {
+ assert(rc != 0);
+ abort_rc = rc;
+ }
+
+ /**
+ * Whether abort() has been called for this request
+ */
+ inline bool aborted() const
+ {
+ return abort_rc != 0;
+ }
+
+ /**
+ * Given that abort() has been called for this request, what `rc` was
+ * passed into it?
+ */
+ int get_abort_code() const
+ {
+ return abort_rc;
+ }
+
+ void set_inode(Inode *in) {
+ _inode = in;
+ }
+ Inode *inode() {
+ return _inode.get();
+ }
+ void take_inode(InodeRef *out) {
+ out->swap(_inode);
+ }
+ void set_old_inode(Inode *in) {
+ _old_inode = in;
+ }
+ Inode *old_inode() {
+ return _old_inode.get();
+ }
+ void take_old_inode(InodeRef *out) {
+ out->swap(_old_inode);
+ }
+ void set_other_inode(Inode *in) {
+ _other_inode = in;
+ }
+ Inode *other_inode() {
+ return _other_inode.get();
+ }
+ void take_other_inode(InodeRef *out) {
+ out->swap(_other_inode);
+ }
+ void set_dentry(Dentry *d);
+ Dentry *dentry();
+ void set_old_dentry(Dentry *d);
+ Dentry *old_dentry();
+
+ MetaRequest* get() {
+ ref++;
+ return this;
+ }
+
+ /// psuedo-private put method; use Client::put_request()
+ bool _put() {
+ int v = --ref;
+ return v == 0;
+ }
+
+ // normal fields
+ void set_tid(ceph_tid_t t) { tid = 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(s, 0); }
+ void set_caller_perms(const UserPerm& _perms) {
+ perms.shallow_copy(_perms);
+ head.caller_uid = perms.uid();
+ head.caller_gid = perms.gid();
+ }
+ uid_t get_uid() { return perms.uid(); }
+ uid_t get_gid() { return perms.gid(); }
+ void set_data(const bufferlist &d) { data = d; }
+ void set_dentry_wanted() {
+ head.flags = head.flags | CEPH_MDS_FLAG_WANT_DENTRY;
+ }
+ int get_op() { return head.op; }
+ ceph_tid_t get_tid() { return tid; }
+ filepath& get_filepath() { return path; }
+ filepath& get_filepath2() { return path2; }
+
+ bool is_write() {
+ return
+ (head.op & CEPH_MDS_OP_WRITE) ||
+ (head.op == CEPH_MDS_OP_OPEN && (head.args.open.flags & (O_CREAT|O_TRUNC)));
+ }
+ bool can_forward() {
+ if ((head.op & CEPH_MDS_OP_WRITE) ||
+ head.op == CEPH_MDS_OP_OPEN) // do not forward _any_ open request.
+ return false;
+ return true;
+ }
+ bool auth_is_best() {
+ if ((head.op & CEPH_MDS_OP_WRITE) || head.op == CEPH_MDS_OP_OPEN ||
+ head.op == CEPH_MDS_OP_READDIR)
+ return true;
+ return false;
+ }
+
+ void dump(Formatter *f) const;
+
+};
+
+#endif
Code Review / stor4nfv.git / blobdiff