libio/tst-fopenloc.c

   1 /* Test for ,ccs= handling in fopen.
   2    Copyright (C) 2001-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <fcntl.h>
  21 #include <locale.h>
  22 #include <mcheck.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <wchar.h>
  27 #include <sys/resource.h>
  28 #include <support/check.h>
  29 #include <support/support.h>
  30 #include <support/xstdio.h>
  31
  32 static const char inputfile[] = "../iconvdata/testdata/ISO-8859-1";
  33
  34 static int
  35 do_bz17916 (void)
  36 {
  37   /* BZ #17916 -- check invalid large ccs= case.  */
  38   struct rlimit rl;
  39   getrlimit (RLIMIT_STACK, &rl);
  40   rl.rlim_cur = 1024 * 1024;
  41   setrlimit (RLIMIT_STACK, &rl);
  42
  43   const size_t sz = 2 * 1024 * 1024;
  44   char *ccs = xmalloc (sz);
  45   strcpy (ccs, "r,ccs=");
  46   memset (ccs + 6, 'A', sz - 6 - 1);
  47   ccs[sz - 1] = '\0';
  48
  49   FILE *fp = fopen (inputfile, ccs);
  50   if (fp != NULL)
  51     {
  52       printf ("unexpected success\n");
  53       free (ccs);
  54       fclose (fp);
  55       return 1;
  56     }
  57
  58   free (ccs);
  59
  60   return 0;
  61 }
  62
  63 static int
  64 do_bz18906 (void)
  65 {
  66   /* BZ #18906 -- check processing of ,ccs= as flags case.  */
  67
  68   const char *ccs = "r,ccs=+ISO-8859-1";
  69   size_t retval;
  70
  71   FILE *fp = fopen (inputfile, ccs);
  72   int flags;
  73
  74   TEST_VERIFY (fp != NULL);
  75
  76   if (fp != NULL)
  77     {
  78       flags = fcntl (fileno (fp), F_GETFL);
  79       retval = ((flags & O_ACCMODE) == O_RDWR);
  80       retval |= ((flags & O_ACCMODE) == O_WRONLY);
  81       TEST_COMPARE (retval, false);
  82       fclose (fp);
  83     }
  84
  85   return EXIT_SUCCESS;
  86 }
  87
  88 static int
  89 do_test (void)
  90 {
  91   FILE *fp;
  92
  93   mtrace ();
  94
  95   xsetlocale (LC_ALL, "de_DE.UTF-8");
  96
  97   fp = xfopen (inputfile, "r,ccs=ISO-8859-1");
  98
  99   while (! feof_unlocked (fp))
 100     {
 101       wchar_t buf[200];
 102
 103       if (fgetws_unlocked (buf, sizeof (buf) / sizeof (buf[0]), fp) == NULL)
 104         break;
 105
 106       fputws (buf, stdout);
 107     }
 108
 109   xfclose (fp);
 110
 111   TEST_COMPARE (do_bz17916 (), 0);
 112   TEST_COMPARE (do_bz18906 (), 0);
 113
 114   return EXIT_SUCCESS;
 115 }
 116
 117 #include <support/test-driver.c>