stdio-common/tst-cookie.c

   1 #include <sys/types.h>
   2 #include <sys/stat.h>
   3 #include <fcntl.h>
   4 #include <errno.h>
   5
   6 #include <stdio.h>
   7
   8 #include <support/xstdio.h>
   9
  10
  11 #define THE_COOKIE ((void *) 0xdeadbeeful)
  12
  13 static int errors;
  14
  15
  16 static int cookieread_called;
  17 static ssize_t
  18 cookieread (void *cookie, char *buf, size_t count)
  19 {
  20   printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
  21           (unsigned long int) cookie);
  22   if (cookie != THE_COOKIE)
  23     ++errors;
  24   cookieread_called = 1;
  25   return 42;
  26 }
  27
  28
  29 static int cookiewrite_called;
  30 static ssize_t
  31 cookiewrite (void *cookie, const char *buf, size_t count)
  32 {
  33   printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
  34           (unsigned long int) cookie);
  35   if (cookie != THE_COOKIE)
  36     ++errors;
  37   cookiewrite_called = 1;
  38   return 43;
  39 }
  40
  41
  42 static int cookieseek_called;
  43 static int
  44 cookieseek (void *cookie, off64_t *offset, int whence)
  45 {
  46   printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
  47           (unsigned long int) cookie);
  48   if (cookie != THE_COOKIE)
  49     ++errors;
  50   cookieseek_called = 1;
  51   return 44;
  52 }
  53
  54
  55 static int cookieclose_called;
  56 static int
  57 cookieclose (void *cookie)
  58 {
  59   printf ("`%s' called with cookie %#lx\n", __FUNCTION__,
  60           (unsigned long int) cookie);
  61   if (cookie != THE_COOKIE)
  62     ++errors;
  63   cookieclose_called = 1;
  64   return 45;
  65 }
  66
  67
  68 static int
  69 do_test (void)
  70 {
  71   cookie_io_functions_t fcts;
  72   char buf[1];
  73   FILE *f;
  74
  75   fcts.read = cookieread;
  76   fcts.seek = cookieseek;
  77   fcts.close = cookieclose;
  78   fcts.write = cookiewrite;
  79
  80   f = fopencookie (THE_COOKIE, "r+", fcts);
  81
  82   xfread (buf, 1, 1, f);
  83
  84   fwrite (buf, 1, 1, f);
  85   fseek (f, 0, SEEK_CUR);
  86   fclose (f);
  87
  88   if (cookieread_called == 0
  89       || cookiewrite_called == 0
  90       || cookieseek_called == 0
  91       || cookieclose_called == 0)
  92     ++errors;
  93
  94   return errors != 0;
  95 }
  96
  97 #define TEST_FUNCTION do_test ()
  98 #include "../test-skeleton.c"