1 /* 2 * Copyright (c) 2017, Peter Haag 3 * Copyright (c) 2014, Peter Haag 4 * Copyright (c) 2009, Peter Haag 5 * Copyright (c) 2004-2008, SWITCH - Teleinformatikdienste fuer Lehre und Forschung 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * * Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * * Neither the name of the author nor the names of its contributors may be 17 * used to endorse or promote products derived from this software without 18 * specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #ifndef _BOOKKEEPER_H 35 #define _BOOKKEEPER_H 1 36 37 #include "config.h" 38 39 #include <sys/types.h> 40 #ifdef HAVE_STDINT_H 41 #include <stdint.h> 42 #endif 43 #include <time.h> 44 #include <unistd.h> 45 46 enum { BOOKKEEPER_OK = 0, ERR_FAILED, ERR_NOTEXISTS, ERR_PATHACCESS, ERR_EXISTS }; 47 48 #define DETACH_ONLY 0 49 #define DESTROY_BOOKKEEPER 1 50 51 typedef struct bookkeeper_s { 52 // collector infos 53 pid_t nfcapd_pid; 54 pid_t launcher_pid; 55 56 // track info 57 uint64_t sequence; 58 59 // file infos 60 time_t first; 61 time_t last; 62 uint64_t numfiles; 63 uint64_t filesize; 64 uint64_t max_filesize; 65 uint64_t max_lifetime; 66 67 68 } bookkeeper_t; 69 70 // All bookkeepers are put into a linked list, to have all the shm_id,sem_id 71 typedef struct bookkeeper_list_s { 72 struct bookkeeper_list_s *next; 73 74 bookkeeper_t *bookkeeper; 75 76 // shared parameters 77 int sem_id; 78 int shm_id; 79 80 } bookkeeper_list_t; 81 82 /* function prototypes */ 83 int InitBookkeeper(bookkeeper_t **bookkeeper, char *path, pid_t nfcapd_pid, pid_t launcher_pid); 84 85 int AccessBookkeeper(bookkeeper_t **bookkeeper, char *path); 86 87 void ReleaseBookkeeper(bookkeeper_t *bookkeeper, int destroy); 88 89 void ClearBooks(bookkeeper_t *bookkeeper, bookkeeper_t *tmp_books); 90 91 int LookBooks(bookkeeper_t *bookkeeper); 92 93 int UnlookBooks(bookkeeper_t *bookkeeper); 94 95 uint64_t BookSequence(bookkeeper_t *bookkeeper); 96 97 void UpdateBooks(bookkeeper_t *bookkeeper, time_t when, uint64_t size); 98 99 void UpdateBooksParam(bookkeeper_t *bookkeeper, time_t lifetime, uint64_t maxsize); 100 101 void PrintBooks(bookkeeper_t *bookkeeper); 102 103 #endif //_BOOKKEEPER_H 104