"Fossies" - the Fresh Open Source Software Archive

Member "gnuastro-0.8/bootstrapped/tests/test-ftruncate.c" (28 Dec 2018, 1551 Bytes) of package /linux/privat/gnuastro-0.8.tar.lz:


As a special service "Fossies" has tried to format the requested source page into HTML format using (guessed) C and C++ source code syntax highlighting (style: standard) with prefixed line numbers and code folding option. Alternatively you can here view or download the uninterpreted source code file. See also the last Fossies "Diffs" side-by-side code changes report for "test-ftruncate.c": 0.5_vs_0.6.

    1 /* Test truncating a file.
    2    Copyright (C) 2011-2018 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 <https://www.gnu.org/licenses/>.  */
   16 
   17 #include <config.h>
   18 
   19 #include <unistd.h>
   20 
   21 #include "signature.h"
   22 SIGNATURE_CHECK (ftruncate, int, (int, off_t));
   23 
   24 #include <errno.h>
   25 #include <fcntl.h>
   26 
   27 #include "macros.h"
   28 
   29 int
   30 main (int argc, char *argv[])
   31 {
   32   const char *filename = argv[1];
   33 
   34   /* Test behaviour for invalid file descriptors.  */
   35   {
   36     errno = 0;
   37     ASSERT (ftruncate (-1, 0) == -1);
   38     ASSERT (errno == EBADF);
   39   }
   40   {
   41     close (99);
   42     errno = 0;
   43     ASSERT (ftruncate (99, 0) == -1);
   44     ASSERT (errno == EBADF);
   45   }
   46 
   47   /* Test behaviour for read-only file descriptors.  */
   48   {
   49     int fd = open (filename, O_RDONLY);
   50     ASSERT (fd >= 0);
   51     errno = 0;
   52     ASSERT (ftruncate (fd, 0) == -1);
   53     ASSERT (errno == EBADF || errno == EINVAL
   54             || errno == EACCES /* seen on mingw */
   55            );
   56     close (fd);
   57   }
   58 
   59   return 0;
   60 }