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Member "gcal-4.1/lib/ftell.c" (22 Jan 2017, 1133 Bytes) of package /linux/misc/gcal-4.1.tar.gz:


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    1 /* An ftell() function that works around platform bugs.
    2    Copyright (C) 2007-2017 Free Software Foundation, Inc.
    3 
    4    This program is free software: you can redistribute it and/or modify
    5    it under the terms of the GNU General Public License as published by
    6    the Free Software Foundation; either version 3 of the License, or
    7    (at your option) any later version.
    8 
    9    This program is distributed in the hope that it will be useful,
   10    but WITHOUT ANY WARRANTY; without even the implied warranty of
   11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   12    GNU General Public License for more details.
   13 
   14    You should have received a copy of the GNU General Public License
   15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
   16 
   17 #include <config.h>
   18 
   19 /* Specification.  */
   20 #include <stdio.h>
   21 
   22 #include <errno.h>
   23 #include <limits.h>
   24 
   25 long
   26 ftell (FILE *fp)
   27 {
   28   /* Use the replacement ftello function with all its workarounds.  */
   29   off_t offset = ftello (fp);
   30   if (LONG_MIN <= offset && offset <= LONG_MAX)
   31     return /* (long) */ offset;
   32   else
   33     {
   34       errno = EOVERFLOW;
   35       return -1;
   36     }
   37 }