rt/tst-aio.c

   1 /* Tests for AIO in librt.
   2    Copyright (C) 1998 Free Software Foundation, Inc.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <aio.h>
  21 #include <errno.h>
  22 #include <error.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <sys/stat.h>
  27
  28
  29 /* prototype for our test function.  */
  30 extern int do_test (int argc, char *argv[]);
  31
  32
  33 /* We might need a bit longer timeout.  */
  34 #define TIMEOUT 20 /* sec */
  35
  36 /* This defines the `main' function and some more.  */
  37 #include <test-skeleton.c>
  38
  39
  40 int
  41 test_file (const void *buf, size_t size, int fd, const char *msg)
  42 {
  43   struct stat st;
  44   char tmp[size];
  45
  46   errno = 0;
  47   if (fstat (fd, &st) < 0)
  48     {
  49       error (0, errno, "%s: failed stat", msg);
  50       return 1;
  51     }
  52
  53   if (st.st_size != size)
  54     {
  55       error (0, errno, "%s: wrong size: %lu, should be %lu",
  56              msg, (unsigned long int) st.st_size, (unsigned long int) size);
  57       return 1;
  58     }
  59
  60   if (pread (fd, tmp, size, 0) != size)
  61     {
  62       error (0, errno, "%s: failed stat", msg);
  63       return 1;
  64     }
  65
  66   if (memcmp (buf, tmp, size) != 0)
  67     {
  68       error (0, errno, "%s: failed comparison", msg);
  69       return 1;
  70     }
  71
  72   printf ("%s test ok\n", msg);
  73
  74   return 0;
  75 }
  76
  77
  78 void
  79 do_wait (struct aiocb **cbp, size_t nent)
  80 {
  81   int go_on;
  82   do
  83     {
  84       size_t cnt;
  85
  86       aio_suspend ((const struct aiocb *const *) cbp, nent, NULL);
  87       go_on = 0;
  88       for (cnt = 0; cnt < nent; ++cnt)
  89         if (cbp[cnt] != NULL && aio_error (cbp[cnt]) == EINPROGRESS)
  90           go_on = 1;
  91         else
  92           cbp[cnt] = NULL;
  93     }
  94   while (go_on);
  95 }
  96
  97
  98 int
  99 do_test (int argc, char *argv[])
 100 {
 101   char *name;
 102   char name_len;
 103   struct aiocb cbs[10];
 104   struct aiocb *cbp[10];
 105   char buf[1000];
 106   size_t cnt;
 107   int fd;
 108   int result = 0;
 109
 110   name_len = strlen (test_dir);
 111   name = malloc (name_len + sizeof ("/aioXXXXXX"));
 112   mempcpy (mempcpy (name, test_dir, name_len),
 113            "/aioXXXXXX", sizeof ("/aioXXXXXX"));
 114   add_temp_file (name);
 115
 116   /* Open our test file.   */
 117   fd = mkstemp (name);
 118   if (fd == -1)
 119     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
 120
 121   /* Preparation.  */
 122   for (cnt = 0; cnt < 10; ++cnt)
 123     {
 124       cbs[cnt].aio_fildes = fd;
 125       cbs[cnt].aio_reqprio = 0;
 126       cbs[cnt].aio_buf = memset (&buf[cnt * 100], '0' + cnt, 100);
 127       cbs[cnt].aio_nbytes = 100;
 128       cbs[cnt].aio_offset = cnt * 100;
 129       cbs[cnt].aio_sigevent.sigev_notify = SIGEV_NONE;
 130
 131       cbp[cnt] = &cbs[cnt];
 132     }
 133
 134   /* First a simple test.  */
 135   for (cnt = 10; cnt > 0; )
 136     aio_write (cbp[--cnt]);
 137   /* Wait 'til the results are there.  */
 138   do_wait (cbp, 10);
 139   /* Test this.  */
 140   result |= test_file (buf, sizeof (buf), fd, "aio_write");
 141
 142   /* Read now as we've written it.  */
 143   memset (buf, '\0', sizeof (buf));
 144   /* Issue the commands.  */
 145   for (cnt = 10; cnt > 0; )
 146     {
 147       --cnt;
 148       cbp[cnt] = &cbs[cnt];
 149       aio_read (cbp[cnt]);
 150     }
 151   /* Wait 'til the results are there.  */
 152   do_wait (cbp, 10);
 153   /* Test this.  */
 154   for (cnt = 0; cnt < 1000; ++cnt)
 155     if (buf[cnt] != '0' + (cnt / 100))
 156       {
 157         result = 1;
 158         error (0, 0, "comparison failed for aio_read test");
 159         break;
 160       }
 161
 162   if (cnt == 1000)
 163     puts ("aio_read test ok");
 164
 165   /* Remove the test file contents.  */
 166   if (ftruncate (fd, 0) < 0)
 167     {
 168       error (0, errno, "ftruncate failed\n");
 169       result = 1;
 170     }
 171
 172   /* Test lio_listio.  */
 173   for (cnt = 0; cnt < 10; ++cnt)
 174     {
 175       cbs[cnt].aio_lio_opcode = LIO_WRITE;
 176       cbp[cnt] = &cbs[cnt];
 177     }
 178   /* Issue the command.  */
 179   lio_listio (LIO_WAIT, cbp, 10, NULL);
 180   /* ...and immediately test it since we started it in wait mode.  */
 181   result |= test_file (buf, sizeof (buf), fd, "lio_listio (write)");
 182
 183   return result;
 184 }