104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
/*
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* Copyright (c) 2017, Peter Haag
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* Copyright (c) 2014, Peter Haag
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* Copyright (c) 2009, Peter Haag
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* Copyright (c) 2004-2008, SWITCH - Teleinformatikdienste fuer Lehre und Forschung
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of the author nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _BOOKKEEPER_H
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#define _BOOKKEEPER_H 1
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#include "config.h"
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#include <sys/types.h>
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#include <time.h>
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#include <unistd.h>
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enum { BOOKKEEPER_OK = 0, ERR_FAILED, ERR_NOTEXISTS, ERR_PATHACCESS, ERR_EXISTS };
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#define DETACH_ONLY 0
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#define DESTROY_BOOKKEEPER 1
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typedef struct bookkeeper_s {
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// collector infos
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pid_t nfcapd_pid;
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pid_t launcher_pid;
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// track info
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uint64_t sequence;
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// file infos
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time_t first;
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time_t last;
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uint64_t numfiles;
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uint64_t filesize;
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uint64_t max_filesize;
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uint64_t max_lifetime;
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} bookkeeper_t;
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// All bookkeepers are put into a linked list, to have all the shm_id,sem_id
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typedef struct bookkeeper_list_s {
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struct bookkeeper_list_s *next;
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bookkeeper_t *bookkeeper;
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// shared parameters
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int sem_id;
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int shm_id;
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} bookkeeper_list_t;
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/* function prototypes */
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int InitBookkeeper(bookkeeper_t **bookkeeper, char *path, pid_t nfcapd_pid, pid_t launcher_pid);
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int AccessBookkeeper(bookkeeper_t **bookkeeper, char *path);
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void ReleaseBookkeeper(bookkeeper_t *bookkeeper, int destroy);
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void ClearBooks(bookkeeper_t *bookkeeper, bookkeeper_t *tmp_books);
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int LookBooks(bookkeeper_t *bookkeeper);
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int UnlookBooks(bookkeeper_t *bookkeeper);
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uint64_t BookSequence(bookkeeper_t *bookkeeper);
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void UpdateBooks(bookkeeper_t *bookkeeper, time_t when, uint64_t size);
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void UpdateBooksParam(bookkeeper_t *bookkeeper, time_t lifetime, uint64_t maxsize);
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void PrintBooks(bookkeeper_t *bookkeeper);
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#endif //_BOOKKEEPER_H
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