s3fs-fuse/src/fdcache_fdinfo.h

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/*
* s3fs - FUSE-based file system backed by Amazon S3
*
* Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef S3FS_FDCACHE_FDINFO_H_
#define S3FS_FDCACHE_FDINFO_H_
#include "fdcache_untreated.h"
//------------------------------------------------
// Class PseudoFdInfo
//------------------------------------------------
class PseudoFdInfo
{
private:
int pseudo_fd;
int physical_fd;
int flags; // flags at open
std::string upload_id;
filepart_list_t upload_list;
UntreatedParts untreated_list; // list of untreated parts that have been written and not yet uploaded(for streamupload)
etaglist_t etag_entities; // list of etag string entities(to maintain the etag entity even if MPPART_INFO is destroyed)
bool is_lock_init;
pthread_mutex_t upload_list_lock; // protects upload_id and upload_list
private:
bool Clear();
public:
PseudoFdInfo(int fd = -1, int open_flags = 0);
~PseudoFdInfo();
int GetPhysicalFd() const { return physical_fd; }
int GetPseudoFd() const { return pseudo_fd; }
int GetFlags() const { return flags; }
bool Writable() const;
bool Readable() const;
bool Set(int fd, int open_flags);
bool ClearUploadInfo(bool is_clear_part = false, bool lock_already_held = false);
bool InitialUploadInfo(const std::string& id);
bool IsUploading() const { return !upload_id.empty(); }
bool GetUploadId(std::string& id) const;
bool GetEtaglist(etaglist_t& list);
bool AppendUploadPart(off_t start, off_t size, bool is_copy = false, int* ppartnum = NULL, std::string** ppetag = NULL);
void ClearUntreated(bool lock_already_held = false);
bool ClearUntreated(off_t start, off_t size);
bool GetUntreated(off_t& start, off_t& size, off_t max_size, off_t min_size = MIN_MULTIPART_SIZE);
bool GetLastUntreated(off_t& start, off_t& size, off_t max_size, off_t min_size = MIN_MULTIPART_SIZE);
bool AddUntreated(off_t start, off_t size);
};
typedef std::map<int, class PseudoFdInfo*> fdinfo_map_t;
#endif // S3FS_FDCACHE_FDINFO_H_
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: expandtab sw=4 ts=4 fdm=marker
* vim<600: expandtab sw=4 ts=4
*/