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 void do_prepare (int argc, char *argv[]);
  31 extern int do_test (int argc, char *argv[]);
  32
  33 /* We have a preparation function.  */
  34 #define PREPARE do_prepare
  35
  36 /* We might need a bit longer timeout.  */
  37 #define TIMEOUT 20 /* sec */
  38
  39 /* This defines the `main' function and some more.  */
  40 #include <test-skeleton.c>
  41
  42
  43 /* These are for the temporary file we generate.  */
  44 char *name;
  45 int fd;
  46
  47 void
  48 do_prepare (int argc, char *argv[])
  49 {
  50   char name_len;
  51
  52   name_len = strlen (test_dir);
  53   name = malloc (name_len + sizeof ("/aioXXXXXX"));
  54   mempcpy (mempcpy (name, test_dir, name_len),
  55            "/aioXXXXXX", sizeof ("/aioXXXXXX"));
  56   add_temp_file (name);
  57
  58   /* Open our test file.   */
  59   fd = mkstemp (name);
  60   if (fd == -1)
  61     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
  62 }
  63
  64
  65 int
  66 test_file (const void *buf, size_t size, int fd, const char *msg)
  67 {
  68   struct stat st;
  69   char tmp[size];
  70
  71   errno = 0;
  72   if (fstat (fd, &st) < 0)
  73     {
  74       error (0, errno, "%s: failed stat", msg);
  75       return 1;
  76     }
  77
  78   if (st.st_size != size)
  79     {
  80       error (0, errno, "%s: wrong size: %lu, should be %lu",
  81              msg, (unsigned long int) st.st_size, (unsigned long int) size);
  82       return 1;
  83     }
  84
  85   if (pread (fd, tmp, size, 0) != size)
  86     {
  87       error (0, errno, "%s: failed stat", msg);
  88       return 1;
  89     }
  90
  91   if (memcmp (buf, tmp, size) != 0)
  92     {
  93       error (0, errno, "%s: failed comparison", msg);
  94       return 1;
  95     }
  96
  97   printf ("%s test ok\n", msg);
  98
  99   return 0;
 100 }
 101
 102
 103 void
 104 do_wait (struct aiocb **cbp, size_t nent)
 105 {
 106   int go_on;
 107   do
 108     {
 109       size_t cnt;
 110
 111       aio_suspend ((const struct aiocb *const *) cbp, nent, NULL);
 112       go_on = 0;
 113       for (cnt = 0; cnt < nent; ++cnt)
 114         if (cbp[cnt] != NULL && aio_error (cbp[cnt]) == EINPROGRESS)
 115           go_on = 1;
 116         else
 117           cbp[cnt] = NULL;
 118     }
 119   while (go_on);
 120 }
 121
 122
 123 int
 124 do_test (int argc, char *argv[])
 125 {
 126   struct aiocb cbs[10];
 127   struct aiocb *cbp[10];
 128   char buf[1000];
 129   size_t cnt;
 130   int result = 0;
 131
 132   /* Preparation.  */
 133   for (cnt = 0; cnt < 10; ++cnt)
 134     {
 135       cbs[cnt].aio_fildes = fd;
 136       cbs[cnt].aio_reqprio = 0;
 137       cbs[cnt].aio_buf = memset (&buf[cnt * 100], '0' + cnt, 100);
 138       cbs[cnt].aio_nbytes = 100;
 139       cbs[cnt].aio_offset = cnt * 100;
 140       cbs[cnt].aio_sigevent.sigev_notify = SIGEV_NONE;
 141
 142       cbp[cnt] = &cbs[cnt];
 143     }
 144
 145   /* First a simple test.  */
 146   for (cnt = 10; cnt > 0; )
 147     aio_write (cbp[--cnt]);
 148   /* Wait 'til the results are there.  */
 149   do_wait (cbp, 10);
 150   /* Test this.  */
 151   result |= test_file (buf, sizeof (buf), fd, "aio_write");
 152
 153   /* Read now as we've written it.  */
 154   memset (buf, '\0', sizeof (buf));
 155   /* Issue the commands.  */
 156   for (cnt = 10; cnt > 0; )
 157     {
 158       --cnt;
 159       cbp[cnt] = &cbs[cnt];
 160       aio_read (cbp[cnt]);
 161     }
 162   /* Wait 'til the results are there.  */
 163   do_wait (cbp, 10);
 164   /* Test this.  */
 165   for (cnt = 0; cnt < 1000; ++cnt)
 166     if (buf[cnt] != '0' + (cnt / 100))
 167       {
 168         result = 1;
 169         error (0, 0, "comparison failed for aio_read test");
 170         break;
 171       }
 172
 173   if (cnt == 1000)
 174     puts ("aio_read test ok");
 175
 176   /* Remove the test file contents.  */
 177   if (ftruncate (fd, 0) < 0)
 178     {
 179       error (0, errno, "ftruncate failed\n");
 180       result = 1;
 181     }
 182
 183   /* Test lio_listio.  */
 184   for (cnt = 0; cnt < 10; ++cnt)
 185     {
 186       cbs[cnt].aio_lio_opcode = LIO_WRITE;
 187       cbp[cnt] = &cbs[cnt];
 188     }
 189   /* Issue the command.  */
 190   lio_listio (LIO_WAIT, cbp, 10, NULL);
 191   /* ...and immediately test it since we started it in wait mode.  */
 192   result |= test_file (buf, sizeof (buf), fd, "lio_listio (write)");
 193
 194   return result;
 195 }