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#ifndef CEPH_CLIENT_FH_H
#define CEPH_CLIENT_FH_H
#include "common/Readahead.h"
#include "include/types.h"
#include "InodeRef.h"
#include "UserPerm.h"
#include "mds/flock.h"
class Inode;
// file handle for any open file state
struct Fh {
InodeRef inode;
int flags;
uint64_t gen;
UserPerm actor_perms; // perms I opened the file with
// the members above once ininitalized in the constructor
// they won't change, and putting them under the client_lock
// makes no sense.
int _ref = 1;
loff_t pos = 0;
int mode; // the mode i opened the file with
bool pos_locked = false; // pos is currently in use
std::list<ceph::condition_variable*> pos_waiters; // waiters for pos
Readahead readahead;
// file lock
std::unique_ptr<ceph_lock_state_t> fcntl_locks;
std::unique_ptr<ceph_lock_state_t> flock_locks;
bool has_any_filelocks() {
return
(fcntl_locks && !fcntl_locks->empty()) ||
(flock_locks && !flock_locks->empty());
}
// IO error encountered by any writeback on this Inode while
// this Fh existed (i.e. an fsync on another Fh will still show
// up as an async_err here because it could have been the same
// bytes we wrote via this Fh).
int async_err = {0};
int take_async_err()
{
int e = async_err;
async_err = 0;
return e;
}
Fh() = delete;
Fh(InodeRef in, int flags, int cmode, uint64_t gen, const UserPerm &perms);
~Fh();
void get() { ++_ref; }
int put() { return --_ref; }
};
#endif
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