stdio-common/tst-perror.c

   1 /* Test of perror.
   2    To be used only for testing glibc.  */
   3
   4 #include <errno.h>
   5 #include <error.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 #include <wchar.h>
  11
  12 #include <support/xunistd.h>
  13
  14 #define MB_EXP \
  15   "null mode test 1: Invalid or incomplete multibyte or wide character\n" \
  16   "multibyte string\n" \
  17   "<0 mode test: Invalid argument\n"
  18 #define MB_EXP_LEN (sizeof (MB_EXP) - 1)
  19
  20 #define WC_EXP \
  21   "null mode test 2: Invalid or incomplete multibyte or wide character\n" \
  22   "wide string\n" \
  23   ">0 mode test: Invalid argument\n"
  24 #define WC_EXP_LEN (sizeof (WC_EXP) - 1)
  25
  26
  27 static int
  28 do_test (void)
  29 {
  30   int fd;
  31   char fname[] = "/tmp/tst-perror.XXXXXX";
  32   int result = 0;
  33   char buf[200];
  34   ssize_t n;
  35
  36   fd = mkstemp (fname);
  37   if (fd == -1)
  38     error (EXIT_FAILURE, errno, "cannot create temporary file");
  39
  40   /* Make sure the file gets removed.  */
  41   unlink (fname);
  42
  43   fclose (stderr);
  44
  45   if (dup2 (fd, 2) == -1)
  46     {
  47       printf ("cannot create file descriptor 2: %m\n");
  48       exit (EXIT_FAILURE);
  49     }
  50
  51   stderr = fdopen (2, "w");
  52   if (stderr == NULL)
  53     {
  54       printf ("fdopen failed: %m\n");
  55       exit (EXIT_FAILURE);
  56     }
  57
  58   if (fwide (stderr, 0) != 0)
  59     {
  60       printf ("stderr not initially in mode 0\n");
  61       exit (EXIT_FAILURE);
  62     }
  63
  64   errno = EILSEQ;
  65   perror ("null mode test 1");
  66
  67   if (fwide (stderr, 0) != 0)
  68     {
  69       puts ("perror changed the mode from 0");
  70       result = 1;
  71     }
  72
  73   fputs ("multibyte string\n", stderr);
  74
  75   if (fwide (stderr, 0) >= 0)
  76     {
  77       puts ("fputs didn't set orientation to narrow");
  78       result = 1;
  79     }
  80
  81   errno = EINVAL;
  82   perror ("<0 mode test");
  83
  84   fclose (stderr);
  85
  86   lseek (fd, 0, SEEK_SET);
  87   n = read (fd, buf, sizeof (buf));
  88   if (n != MB_EXP_LEN || memcmp (buf, MB_EXP, MB_EXP_LEN) != 0)
  89     {
  90       printf ("multibyte test failed.  Expected:\n%s\nGot:\n%.*s\n",
  91               MB_EXP, (int) n, buf);
  92       result = 1;
  93     }
  94   else
  95     puts ("multibyte test succeeded");
  96
  97   lseek (fd, 0, SEEK_SET);
  98   xftruncate (fd, 0);
  99
 100   if (dup2 (fd, 2) == -1)
 101     {
 102       printf ("cannot create file descriptor 2: %m\n");
 103       exit (EXIT_FAILURE);
 104     }
 105   stderr = fdopen (2, "w");
 106   if (stderr == NULL)
 107     {
 108       printf ("fdopen failed: %m\n");
 109       exit (EXIT_FAILURE);
 110     }
 111
 112   if (fwide (stderr, 0) != 0)
 113     {
 114       printf ("stderr not initially in mode 0\n");
 115       exit (EXIT_FAILURE);
 116     }
 117
 118   errno = EILSEQ;
 119   perror ("null mode test 2");
 120
 121   if (fwide (stderr, 0) != 0)
 122     {
 123       puts ("perror changed the mode from 0");
 124       result = 1;
 125     }
 126
 127   fputws (L"wide string\n", stderr);
 128
 129   if (fwide (stderr, 0) <= 0)
 130     {
 131       puts ("fputws didn't set orientation to wide");
 132       result = 1;
 133     }
 134
 135   errno = EINVAL;
 136   perror (">0 mode test");
 137
 138   fclose (stderr);
 139
 140   lseek (fd, 0, SEEK_SET);
 141   n = read (fd, buf, sizeof (buf));
 142   if (n != WC_EXP_LEN || memcmp (buf, WC_EXP, WC_EXP_LEN) != 0)
 143     {
 144       printf ("wide test failed.  Expected:\n%s\nGot:\n%.*s\n",
 145               WC_EXP, (int) n, buf);
 146       result = 1;
 147     }
 148   else
 149     puts ("wide test succeeded");
 150
 151   close (fd);
 152
 153   return result;
 154 }
 155
 156 #define TEST_FUNCTION do_test ()
 157 #include "../test-skeleton.c"