rtkaio/tst-aiod64.c

   1 /* Tests for 64bit AIO in librt.
   2    Copyright (C) 1998, 1999, 2000, 2002, 2006 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #define _LARGEFILE_SOURCE 1
  22 #include <aio.h>
  23 #include <errno.h>
  24 #include <error.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <sys/stat.h>
  29 #include "tst-aiod.h"
  30
  31
  32 /* Prototype for our test function.  */
  33 extern void do_prepare (int argc, char *argv[]);
  34 extern int do_test (int argc, char *argv[]);
  35
  36 /* We have a preparation function.  */
  37 #define PREPARE do_prepare
  38
  39 /* We might need a bit longer timeout.  */
  40 #define TIMEOUT 20 /* sec */
  41
  42 /* This defines the `main' function and some more.  */
  43 #include <test-skeleton.c>
  44
  45
  46 /* These are for the temporary file we generate.  */
  47 char *name;
  48 int fd;
  49 char *tmpbuf;
  50 int blksz = 100;
  51
  52 void
  53 do_prepare (int argc, char *argv[])
  54 {
  55   size_t name_len;
  56
  57   name_len = strlen (test_dir);
  58   name = malloc (name_len + sizeof ("/aioXXXXXX"));
  59   mempcpy (mempcpy (name, test_dir, name_len),
  60            "/aioXXXXXX", sizeof ("/aioXXXXXX"));
  61   add_temp_file (name);
  62
  63   /* Open our test file.   */
  64   fd = mkstemp (name);
  65   if (fd == -1)
  66     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
  67
  68   int sz = set_o_direct (fd);
  69   if (sz != -1)
  70     {
  71       blksz = sz;
  72       printf ("Using O_DIRECT with block size %d\n", blksz);
  73     }
  74 }
  75
  76
  77 static int
  78 test_file (const void *buf, size_t size, int fd, const char *msg)
  79 {
  80   struct stat st;
  81   char *tmp = tmpbuf;
  82
  83   errno = 0;
  84   if (fstat (fd, &st) < 0)
  85     {
  86       error (0, errno, "%s: failed stat", msg);
  87       return 1;
  88     }
  89
  90   if (st.st_size != (off_t) size)
  91     {
  92       error (0, errno, "%s: wrong size: %lu, should be %lu",
  93              msg, (unsigned long int) st.st_size, (unsigned long int) size);
  94       return 1;
  95     }
  96
  97   if (pread (fd, tmp, size, 0) != (ssize_t) size)
  98     {
  99       error (0, errno, "%s: failed pread", msg);
 100       return 1;
 101     }
 102
 103   if (memcmp (buf, tmp, size) != 0)
 104     {
 105       error (0, errno, "%s: failed comparison", msg);
 106       return 1;
 107     }
 108
 109   printf ("%s test ok\n", msg);
 110
 111   return 0;
 112 }
 113
 114
 115 static int
 116 do_wait (struct aiocb64 **cbp, size_t nent, int allowed_err)
 117 {
 118   int go_on;
 119   size_t cnt;
 120   int result = 0;
 121
 122   do
 123     {
 124       aio_suspend64 ((const struct aiocb64 *const *) cbp, nent, NULL);
 125       go_on = 0;
 126       for (cnt = 0; cnt < nent; ++cnt)
 127         if (cbp[cnt] != NULL)
 128           {
 129             if (aio_error64 (cbp[cnt]) == EINPROGRESS)
 130               go_on = 1;
 131             else
 132               {
 133                 if (aio_return64 (cbp[cnt]) == -1
 134                     && (allowed_err == 0
 135                         || aio_error64 (cbp[cnt]) != allowed_err))
 136                   {
 137                     error (0, aio_error64 (cbp[cnt]), "Operation failed\n");
 138                     result = 1;
 139                   }
 140                 cbp[cnt] = NULL;
 141               }
 142           }
 143     }
 144   while (go_on);
 145
 146   return result;
 147 }
 148
 149
 150 int
 151 do_test (int argc, char *argv[])
 152 {
 153   struct aiocb64 cbs[10];
 154   struct aiocb64 cbs_fsync;
 155   struct aiocb64 *cbp[10];
 156   struct aiocb64 *cbp_fsync[1];
 157   char *buf;
 158   size_t cnt;
 159   int result = 0;
 160
 161   buf = mmap (NULL, 20 * blksz, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
 162   tmpbuf = buf + 10 * blksz;
 163   if (buf == MAP_FAILED)
 164     {
 165       error (0, errno, "mmap failed");
 166       return 1;
 167     }
 168
 169   /* Preparation.  */
 170   for (cnt = 0; cnt < 10; ++cnt)
 171     {
 172       cbs[cnt].aio_fildes = fd;
 173       cbs[cnt].aio_reqprio = 0;
 174       cbs[cnt].aio_buf = memset (&buf[cnt * blksz], '0' + cnt, blksz);
 175       cbs[cnt].aio_nbytes = blksz;
 176       cbs[cnt].aio_offset = cnt * blksz;
 177       cbs[cnt].aio_sigevent.sigev_notify = SIGEV_NONE;
 178
 179       cbp[cnt] = &cbs[cnt];
 180     }
 181
 182   /* First a simple test.  */
 183   for (cnt = 10; cnt > 0; )
 184     if (aio_write64 (cbp[--cnt]) < 0 && errno == ENOSYS)
 185       {
 186         error (0, 0, "no aio support in this configuration");
 187         return 0;
 188       }
 189   /* Wait 'til the results are there.  */
 190   result |= do_wait (cbp, 10, 0);
 191   /* Test this.  */
 192   result |= test_file (buf, 10 * blksz, fd, "aio_write");
 193
 194   /* Read now as we've written it.  */
 195   memset (buf, '\0', 10 * blksz);
 196   /* Issue the commands.  */
 197   for (cnt = 10; cnt > 0; )
 198     {
 199       --cnt;
 200       cbp[cnt] = &cbs[cnt];
 201       aio_read64 (cbp[cnt]);
 202     }
 203   /* Wait 'til the results are there.  */
 204   result |= do_wait (cbp, 10, 0);
 205   /* Test this.  */
 206   for (cnt = 0; cnt < 10 * blksz; ++cnt)
 207     if (buf[cnt] != '0' + (cnt / blksz))
 208       {
 209         result = 1;
 210         error (0, 0, "comparison failed for aio_read test");
 211         break;
 212       }
 213
 214   if (cnt == 10 * blksz)
 215     puts ("aio_read test ok");
 216
 217   /* Remove the test file contents.  */
 218   if (ftruncate64 (fd, 0) < 0)
 219     {
 220       error (0, errno, "ftruncate failed\n");
 221       result = 1;
 222     }
 223
 224   /* Test lio_listio.  */
 225   for (cnt = 0; cnt < 10; ++cnt)
 226     {
 227       cbs[cnt].aio_lio_opcode = LIO_WRITE;
 228       cbp[cnt] = &cbs[cnt];
 229     }
 230   /* Issue the command.  */
 231   lio_listio64 (LIO_WAIT, cbp, 10, NULL);
 232   /* ...and immediately test it since we started it in wait mode.  */
 233   result |= test_file (buf, 10 * blksz, fd, "lio_listio (write)");
 234
 235   /* Test aio_fsync.  */
 236   cbs_fsync.aio_fildes = fd;
 237   cbs_fsync.aio_sigevent.sigev_notify = SIGEV_NONE;
 238   cbp_fsync[0] = &cbs_fsync;
 239
 240   /* Remove the test file contents first.  */
 241   if (ftruncate64 (fd, 0) < 0)
 242     {
 243       error (0, errno, "ftruncate failed\n");
 244       result = 1;
 245     }
 246
 247   /* Write again.  */
 248   for (cnt = 10; cnt > 0; )
 249     aio_write64 (cbp[--cnt]);
 250
 251   if (aio_fsync64 (O_SYNC, &cbs_fsync) < 0)
 252     {
 253       error (0, errno, "aio_fsync failed\n");
 254       result = 1;
 255     }
 256   result |= do_wait (cbp_fsync, 1, 0);
 257
 258   /* ...and test since all data should be on disk now.  */
 259   result |= test_file (buf, 10 * blksz, fd, "aio_fsync (aio_write)");
 260
 261   /* Test 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     aio_write64 (cbp[--cnt]);
 272
 273   /* Cancel all requests.  */
 274   if (aio_cancel64 (fd, NULL) == -1)
 275     printf ("aio_cancel64 (fd, NULL) cannot cancel anything\n");
 276
 277   result |= do_wait (cbp, 10, ECANCELED);
 278
 279   /* Another test for aio_cancel.  */
 280   /* Remove the test file contents first.  */
 281   if (ftruncate64 (fd, 0) < 0)
 282     {
 283       error (0, errno, "ftruncate failed\n");
 284       result = 1;
 285     }
 286
 287   /* Write again.  */
 288   for (cnt = 10; cnt > 0; )
 289     {
 290       --cnt;
 291       cbp[cnt] = &cbs[cnt];
 292       aio_write64 (cbp[cnt]);
 293     }
 294   puts ("finished3");
 295
 296   /* Cancel all requests.  */
 297   for (cnt = 10; cnt > 0; )
 298     if (aio_cancel64 (fd, cbp[--cnt]) == -1)
 299       /* This is not an error.  The request can simply be finished.  */
 300       printf ("aio_cancel64 (fd, cbp[%Zd]) cannot be canceled\n", cnt);
 301   puts ("finished2");
 302
 303   result |= do_wait (cbp, 10, ECANCELED);
 304
 305   puts ("finished");
 306
 307   return result;
 308 }