tests/invalidate-file.c

   1 /*
   2  * Copyright (c) 2000 - 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #include <stdio.h>
  39 #include <sys/types.h>
  40 #include <sys/mman.h>
  41 #include <sys/stat.h>
  42
  43 #include <unistd.h>
  44 #include <fcntl.h>
  45
  46 #include <atypes.h>
  47
  48 #include <kafs.h>
  49
  50 #include <fs.h>
  51 #include <arlalib.h>
  52
  53 #include <err.h>
  54 #include <roken.h>
  55
  56 RCSID("$Id$");
  57
  58 #ifndef MAP_FAILED
  59 #define MAP_FAILED ((void *)-1)
  60 #endif
  61
  62 #ifdef KERBEROS
  63
  64 static void
  65 create_write_file (char *filename)
  66 {
  67     int ret;
  68     int fd;
  69
  70     fs_invalidate (filename);
  71
  72     fd = open(filename, O_RDWR|O_CREAT, 0666);
  73     if (fd < 0)
  74         err (1, "open(rw): %s", filename);
  75
  76     ret = write (fd, "foo", 3);
  77     if (ret < 0)
  78         err (1, "write");
  79
  80     fs_invalidate (filename);
  81
  82     ret = write (fd, "foo", 3);
  83     if (ret < 0)
  84         err (1, "write2");
  85
  86     ret = close (fd);
  87     if (ret < 0)
  88         err (1, "close");
  89 }
  90
  91 static void
  92 read_file (char *filename)
  93 {
  94     int ret;
  95     int fd;
  96     char buf[3];
  97
  98     fs_invalidate (filename);
  99
 100     fd = open(filename, O_RDONLY, 0666);
 101     if (fd < 0)
 102         err (1, "open(ro)");
 103
 104     ret = read (fd, buf, sizeof(buf));
 105     if (ret < 0)
 106         err (1, "read");
 107
 108     fs_invalidate (filename);
 109
 110     ret = read (fd, buf, sizeof(buf));
 111     if (ret < 0)
 112         err (1, "read");
 113
 114     ret = close (fd);
 115     if (ret < 0)
 116         err (1, "close");
 117 }
 118
 119 static void
 120 mmap_read_file (char *filename)
 121 {
 122     int fd;
 123     void *v;
 124     char buf[6];
 125
 126     fs_invalidate (filename);
 127
 128     fd = open(filename, O_RDONLY, 0666);
 129     if (fd < 0)
 130         err (1, "open(ro-mmap)");
 131
 132     v = mmap (NULL, 6, PROT_READ, MAP_SHARED, fd, 0);
 133     if (v == (void *)MAP_FAILED)
 134         err (1, "mmap(ro) %s", filename);
 135
 136     memcpy (buf, v, 3);
 137     fs_invalidate (filename);
 138     memcpy (buf, v, 3);
 139
 140     munmap (v, 6);
 141 }
 142
 143 static void
 144 mmap_write_file (char *filename)
 145 {
 146     int fd;
 147     void *v;
 148
 149     fs_invalidate (filename);
 150
 151     fd = open (filename, O_RDWR, 0666);
 152     if (fd < 0)
 153         err (1, "open(rw-mmap)");
 154
 155     v = mmap (NULL, 6, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
 156     if (v == (void *)MAP_FAILED)
 157         err (1, "mmap(rw) %s", filename);
 158
 159     memcpy (v, "foo", 3);
 160     fs_invalidate (filename);
 161     memcpy (v, "foo", 3);
 162
 163     munmap (v, 6);
 164     close (fd);
 165 }
 166
 167 int
 168 main(int argc, char **argv)
 169 {
 170     char *filename = "foo";
 171
 172     setprogname (argv[0]);
 173
 174 #ifdef KERBEROS
 175     if (!k_hasafs())
 176 #endif
 177         exit (1);
 178
 179     create_write_file (filename);
 180     read_file (filename);
 181     read_file (filename);
 182     read_file (filename);
 183     read_file (filename);
 184     mmap_read_file (filename);
 185     mmap_read_file (filename);
 186     mmap_read_file (filename);
 187     mmap_read_file (filename);
 188     mmap_write_file (filename);
 189     mmap_write_file (filename);
 190     mmap_write_file (filename);
 191     mmap_write_file (filename);
 192
 193     return 0;
 194 }
 195
 196 #else
 197
 198 int
 199 main(int argc, char **argv)
 200 {
 201     setprogname (argv[0]);
 202
 203     errx (1, "no kafs support");
 204 }
 205 #endif