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annotate common/linuxlockfile.h @ 1381:c34f8c80cf7e
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author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Thu, 15 Jan 2015 15:28:52 +0100 |
parents | a974b61a5cce |
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rev | line source |
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1 /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU GPL (v>=2) |
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5 * and comes with ABSOLUTELY NO WARRANTY! |
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6 * See LICENSE.txt for details. |
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7 */ |
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8 |
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9 /** |
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10 * @file linuxlockfile.h |
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11 * @brief Linux specific functions for lock file handling. |
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12 * @details Functions to handle procsss specific lock files, these are |
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13 * only used on GNU Linux as on windows different mechanisms are |
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14 * utilized to ensure only a single instance runs at a time. |
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15 */ |
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16 |
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17 #ifndef LINUXLOCKFILE_H |
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18 #define LINUXLOCKFILE_H |
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19 |
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20 #ifdef __cplusplus |
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21 extern "C" { |
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22 #endif |
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23 |
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24 /** |
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25 * @brief create a lockfile |
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26 * @details create and lock a lockfile containing the pid of the |
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27 * current process. fcntl is used for locking, to work in most cases |
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28 * (e.g. NFS). |
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29 * @param[in] path to the lockfile |
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30 * @returns the file descriptor of the lockfile or -1 on error |
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31 */ |
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32 int open_lockfile(char *path); |
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33 |
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34 /** |
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35 * @brief close a lockfile |
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36 * @details unlock and close a lockfile for the given file descriptor. |
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37 * @param[in] fd TODO |
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38 * @returns the file descriptor of the lockfile or -1 on error |
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39 */ |
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40 void close_lockfile(int fd); |
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41 |
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42 #ifdef __cplusplus |
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43 } |
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44 #endif |
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45 |
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46 #endif |