"Fossies" - the Fresh Open Source Software Archive

Member "shake-1.0/linux.h" (15 Nov 2014, 2831 Bytes) of package /linux/privat/shake-1.0.tar.gz:

    1 /***************************************************************************/
    2 /*  Copyright (C) 2006-2011 Brice Arnould.                                 */
    3 /*                                                                         */
    4 /*  This file is part of ShaKe.                                            */
    5 /*                                                                         */
    6 /*  ShaKe is free software; you can redistribute it and/or modify          */
    7 /*  it under the terms of the GNU General Public License as published by   */
    8 /*  the Free Software Foundation; either version 3 of the License, or      */
    9 /*  (at your option) any later version.                                    */
   10 /*                                                                         */
   11 /*  This program is distributed in the hope that it will be useful,        */
   12 /*  but WITHOUT ANY WARRANTY; without even the implied warranty of         */
   13 /*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          */
   14 /*  GNU General Public License for more details.                           */
   15 /*                                                                         */
   16 /*  You should have received a copy of the GNU General Public License      */
   17 /*  along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
   18 /***************************************************************************/
   19 
   20 #ifndef LINUX_H
   21 # define LINUX_H
   22 # define _GNU_SOURCE
   23 # include <getopt.h>        // getopt_long()
   24 # include <alloca.h>        // alloca()
   25 # include <stdbool.h>       // bool
   26 # include <stdio.h>     // getline, asprintf
   27 # include <sys/time.h>      // struct timeval
   28 # include "judge.h"
   29 
   30 # define OS_RESERVED_SIGNAL 16
   31 
   32 /* Called once, perform OS-specific tasks.
   33  */
   34 int os_specific_setup (const char *tempfile);
   35 
   36 
   37 
   38 /* Get a write lock on the file.
   39  * We get a write lock even when a read lock would be enough to detect
   40  * earlier access contention.
   41  */
   42 int readlock_file (int fd, const char *filename);
   43 
   44 /* Release our locks on the file
   45  * Return -1 if we do not own the lock.
   46  */
   47 int unlock_file (int fd);
   48 
   49 /* Promote a read lock to a write lock.
   50  * Return -1 if we no longer owned the lock.
   51  */
   52 int readlock_to_writelock (int fd);
   53 
   54 /* Return true if fd is locked, else false
   55  */
   56 bool is_locked (int fd);
   57 
   58 
   59 
   60 /* Declares the glibc function
   61  */
   62 int futimes (int fd, const struct timeval tv[2]);
   63 
   64 /* Set the shake_ptime field and ctime of the file to the actual date.
   65  */
   66 int set_ptime (int fd);
   67 
   68 /* Get the ptime of the file, -1 if that failed
   69  */
   70 time_t get_ptime (int fd);
   71 
   72 /*  This function is mainly a wrapper around ioctl()s.
   73  *  It updates a->{blocks, crumbc, fragc, start and end}
   74  * with just a bit of undocumented black magic.
   75  *  It can only be called after investigate().
   76  */
   77 int get_testimony (struct accused *a, struct law *l);
   78 
   79 #endif