src/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
  55
  56 #ifndef MAP_FAILED
  57 #define MAP_FAILED ((void *)-1)
  58 #endif
  59
  60 #ifdef KERBEROS
  61
  62 static void
  63 create_write_file(char *filename)
  64 {
  65     int ret;
  66     int fd;
  67
  68     fs_invalidate(filename);
  69
  70     fd = open(filename, O_RDWR | O_CREAT, 0666);
  71     if (fd < 0)
  72         err(1, "open(rw): %s", filename);
  73
  74     ret = write(fd, "foo", 3);
  75     if (ret < 0)
  76         err(1, "write");
  77
  78     fs_invalidate(filename);
  79
  80     ret = write(fd, "foo", 3);
  81     if (ret < 0)
  82         err(1, "write2");
  83
  84     ret = close(fd);
  85     if (ret < 0)
  86         err(1, "close");
  87 }
  88
  89 static void
  90 read_file(char *filename)
  91 {
  92     int ret;
  93     int fd;
  94     char buf[3];
  95
  96     fs_invalidate(filename);
  97
  98     fd = open(filename, O_RDONLY, 0666);
  99     if (fd < 0)
 100         err(1, "open(ro)");
 101
 102     ret = read(fd, buf, sizeof(buf));
 103     if (ret < 0)
 104         err(1, "read");
 105
 106     fs_invalidate(filename);
 107
 108     ret = read(fd, buf, sizeof(buf));
 109     if (ret < 0)
 110         err(1, "read");
 111
 112     ret = close(fd);
 113     if (ret < 0)
 114         err(1, "close");
 115 }
 116
 117 static void
 118 mmap_read_file(char *filename)
 119 {
 120     int fd;
 121     void *v;
 122     char buf[6];
 123
 124     fs_invalidate(filename);
 125
 126     fd = open(filename, O_RDONLY, 0666);
 127     if (fd < 0)
 128         err(1, "open(ro-mmap)");
 129
 130     v = mmap(NULL, 6, PROT_READ, MAP_SHARED, fd, 0);
 131     if (v == (void *)MAP_FAILED)
 132         err(1, "mmap(ro) %s", filename);
 133
 134     memcpy(buf, v, 3);
 135     fs_invalidate(filename);
 136     memcpy(buf, v, 3);
 137
 138     munmap(v, 6);
 139 }
 140
 141 static void
 142 mmap_write_file(char *filename)
 143 {
 144     int fd;
 145     void *v;
 146
 147     fs_invalidate(filename);
 148
 149     fd = open(filename, O_RDWR, 0666);
 150     if (fd < 0)
 151         err(1, "open(rw-mmap)");
 152
 153     v = mmap(NULL, 6, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 154     if (v == (void *)MAP_FAILED)
 155         err(1, "mmap(rw) %s", filename);
 156
 157     memcpy(v, "foo", 3);
 158     fs_invalidate(filename);
 159     memcpy(v, "foo", 3);
 160
 161     munmap(v, 6);
 162     close(fd);
 163 }
 164
 165 int
 166 main(int argc, char **argv)
 167 {
 168     char *filename = "foo";
 169
 170
 171 #ifdef KERBEROS
 172     if (!k_hasafs())
 173 #endif
 174         exit(1);
 175
 176     create_write_file(filename);
 177     read_file(filename);
 178     read_file(filename);
 179     read_file(filename);
 180     read_file(filename);
 181     mmap_read_file(filename);
 182     mmap_read_file(filename);
 183     mmap_read_file(filename);
 184     mmap_read_file(filename);
 185     mmap_write_file(filename);
 186     mmap_write_file(filename);
 187     mmap_write_file(filename);
 188     mmap_write_file(filename);
 189
 190     return 0;
 191 }
 192
 193 #else
 194
 195 int
 196 main(int argc, char **argv)
 197 {
 198
 199     errx(1, "no kafs support");
 200 }
 201 #endif