rt/tst-aio64.c

   1 /* Tests for 64bit AIO in librt.
   2    Copyright (C) 1998-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #define _LARGEFILE_SOURCE 1
  21 #include <aio.h>
  22 #include <errno.h>
  23 #include <error.h>
  24 #include <fcntl.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <sys/stat.h>
  29
  30
  31 /* Prototype for our test function.  */
  32 extern void do_prepare (int argc, char *argv[]);
  33 extern int do_test (int argc, char *argv[]);
  34
  35 /* We have a preparation function.  */
  36 #define PREPARE do_prepare
  37
  38 /* We might need a bit longer timeout.  */
  39 #define TIMEOUT 20 /* sec */
  40
  41 /* This defines the `main' function and some more.  */
  42 #include <test-skeleton.c>
  43
  44
  45 /* These are for the temporary file we generate.  */
  46 char *name;
  47 int fd;
  48
  49 void
  50 do_prepare (int argc, char *argv[])
  51 {
  52   size_t name_len;
  53
  54   name_len = strlen (test_dir);
  55   name = malloc (name_len + sizeof ("/aioXXXXXX"));
  56   mempcpy (mempcpy (name, test_dir, name_len),
  57            "/aioXXXXXX", sizeof ("/aioXXXXXX"));
  58   add_temp_file (name);
  59
  60   /* Open our test file.   */
  61   fd = mkstemp (name);
  62   if (fd == -1)
  63     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
  64 }
  65
  66
  67 static int
  68 test_file (const void *buf, size_t size, int fd, const char *msg)
  69 {
  70   struct stat st;
  71   char tmp[size];
  72
  73   errno = 0;
  74   if (fstat (fd, &st) < 0)
  75     {
  76       error (0, errno, "%s: failed stat", msg);
  77       return 1;
  78     }
  79
  80   if (st.st_size != (off_t) size)
  81     {
  82       error (0, errno, "%s: wrong size: %lu, should be %lu",
  83              msg, (unsigned long int) st.st_size, (unsigned long int) size);
  84       return 1;
  85     }
  86
  87   if (pread (fd, tmp, size, 0) != (ssize_t) size)
  88     {
  89       error (0, errno, "%s: failed pread", msg);
  90       return 1;
  91     }
  92
  93   if (memcmp (buf, tmp, size) != 0)
  94     {
  95       error (0, errno, "%s: failed comparison", msg);
  96       return 1;
  97     }
  98
  99   printf ("%s test ok\n", msg);
 100
 101   return 0;
 102 }
 103
 104
 105 static int
 106 do_wait (struct aiocb64 **cbp, size_t nent, int allowed_err)
 107 {
 108   int go_on;
 109   size_t cnt;
 110   int result = 0;
 111
 112   do
 113     {
 114       aio_suspend64 ((const struct aiocb64 *const *) cbp, nent, NULL);
 115       go_on = 0;
 116       for (cnt = 0; cnt < nent; ++cnt)
 117         if (cbp[cnt] != NULL)
 118           {
 119             if (aio_error64 (cbp[cnt]) == EINPROGRESS)
 120               go_on = 1;
 121             else
 122               {
 123                 if (aio_return64 (cbp[cnt]) == -1
 124                     && (allowed_err == 0
 125                         || aio_error64 (cbp[cnt]) != allowed_err))
 126                   {
 127                     error (0, aio_error64 (cbp[cnt]), "Operation failed\n");
 128                     result = 1;
 129                   }
 130                 cbp[cnt] = NULL;
 131               }
 132           }
 133     }
 134   while (go_on);
 135
 136   return result;
 137 }
 138
 139
 140 int
 141 do_test (int argc, char *argv[])
 142 {
 143   struct aiocb64 cbs[10];
 144   struct aiocb64 cbs_fsync;
 145   struct aiocb64 *cbp[10];
 146   struct aiocb64 *cbp_fsync[1];
 147   char buf[1000];
 148   size_t cnt;
 149   int result = 0;
 150
 151   /* Preparation.  */
 152   for (cnt = 0; cnt < 10; ++cnt)
 153     {
 154       cbs[cnt].aio_fildes = fd;
 155       cbs[cnt].aio_reqprio = 0;
 156       cbs[cnt].aio_buf = memset (&buf[cnt * 100], '0' + cnt, 100);
 157       cbs[cnt].aio_nbytes = 100;
 158       cbs[cnt].aio_offset = cnt * 100;
 159       cbs[cnt].aio_sigevent.sigev_notify = SIGEV_NONE;
 160
 161       cbp[cnt] = &cbs[cnt];
 162     }
 163
 164   /* First a simple test.  */
 165   for (cnt = 10; cnt > 0; )
 166     if (aio_write64 (cbp[--cnt]) < 0 && errno == ENOSYS)
 167       {
 168         error (0, 0, "no aio support in this configuration");
 169         return 0;
 170       }
 171   /* Wait 'til the results are there.  */
 172   result |= do_wait (cbp, 10, 0);
 173   /* Test this.  */
 174   result |= test_file (buf, sizeof (buf), fd, "aio_write");
 175
 176   /* Read now as we've written it.  */
 177   memset (buf, '\0', sizeof (buf));
 178   /* Issue the commands.  */
 179   for (cnt = 10; cnt > 0; )
 180     {
 181       --cnt;
 182       cbp[cnt] = &cbs[cnt];
 183       aio_read64 (cbp[cnt]);
 184     }
 185   /* Wait 'til the results are there.  */
 186   result |= do_wait (cbp, 10, 0);
 187   /* Test this.  */
 188   for (cnt = 0; cnt < 1000; ++cnt)
 189     if (buf[cnt] != '0' + (cnt / 100))
 190       {
 191         result = 1;
 192         error (0, 0, "comparison failed for aio_read test");
 193         break;
 194       }
 195
 196   if (cnt == 1000)
 197     puts ("aio_read test ok");
 198
 199   /* Remove the test file contents.  */
 200   if (ftruncate64 (fd, 0) < 0)
 201     {
 202       error (0, errno, "ftruncate failed\n");
 203       result = 1;
 204     }
 205
 206   /* Test lio_listio.  */
 207   for (cnt = 0; cnt < 10; ++cnt)
 208     {
 209       cbs[cnt].aio_lio_opcode = LIO_WRITE;
 210       cbp[cnt] = &cbs[cnt];
 211     }
 212   /* Issue the command.  */
 213   lio_listio64 (LIO_WAIT, cbp, 10, NULL);
 214   /* ...and immediately test it since we started it in wait mode.  */
 215   result |= test_file (buf, sizeof (buf), fd, "lio_listio (write)");
 216
 217   /* Test aio_fsync.  */
 218   cbs_fsync.aio_fildes = fd;
 219   cbs_fsync.aio_sigevent.sigev_notify = SIGEV_NONE;
 220   cbp_fsync[0] = &cbs_fsync;
 221
 222   /* Remove the test file contents first.  */
 223   if (ftruncate64 (fd, 0) < 0)
 224     {
 225       error (0, errno, "ftruncate failed\n");
 226       result = 1;
 227     }
 228
 229   /* Write again.  */
 230   for (cnt = 10; cnt > 0; )
 231     aio_write64 (cbp[--cnt]);
 232
 233   if (aio_fsync64 (O_SYNC, &cbs_fsync) < 0)
 234     {
 235       error (0, errno, "aio_fsync failed\n");
 236       result = 1;
 237     }
 238   result |= do_wait (cbp_fsync, 1, 0);
 239
 240   /* ...and test since all data should be on disk now.  */
 241   result |= test_file (buf, sizeof (buf), fd, "aio_fsync (aio_write)");
 242
 243   /* Test aio_cancel.  */
 244   /* Remove the test file contents first.  */
 245   if (ftruncate64 (fd, 0) < 0)
 246     {
 247       error (0, errno, "ftruncate failed\n");
 248       result = 1;
 249     }
 250
 251   /* Write again.  */
 252   for (cnt = 10; cnt > 0; )
 253     aio_write64 (cbp[--cnt]);
 254
 255   /* Cancel all requests.  */
 256   if (aio_cancel64 (fd, NULL) == -1)
 257     printf ("aio_cancel64 (fd, NULL) cannot cancel anything\n");
 258
 259   result |= do_wait (cbp, 10, ECANCELED);
 260
 261   /* Another test for aio_cancel.  */
 262   /* Remove the test file contents first.  */
 263   if (ftruncate64 (fd, 0) < 0)
 264     {
 265       error (0, errno, "ftruncate failed\n");
 266       result = 1;
 267     }
 268
 269   /* Write again.  */
 270   for (cnt = 10; cnt > 0; )
 271     {
 272       --cnt;
 273       cbp[cnt] = &cbs[cnt];
 274       aio_write64 (cbp[cnt]);
 275     }
 276   puts ("finished3");
 277
 278   /* Cancel all requests.  */
 279   for (cnt = 10; cnt > 0; )
 280     if (aio_cancel64 (fd, cbp[--cnt]) == -1)
 281       /* This is not an error.  The request can simply be finished.  */
 282       printf ("aio_cancel64 (fd, cbp[%Zd]) cannot be canceled\n", cnt);
 283   puts ("finished2");
 284
 285   result |= do_wait (cbp, 10, ECANCELED);
 286
 287   puts ("finished");
 288
 289   return result;
 290 }