source4/torture/raw/pingpong.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    ping pong test
   5
   6    Copyright (C) Ronnie Sahlberg 2007
   7
   8    Significantly based on and borrowed from lockbench.c by
   9    Copyright (C) Andrew Tridgell 2006
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 /*
  26    filename is specified by
  27          --option=torture:filename=...
  28
  29    number of locks is specified by
  30          --option=torture:num_locks=...
  31
  32    locktimeout is specified in ms by
  33          --option=torture:locktimeout=...
  34
  35        default is 100 seconds
  36        if set to 0 pingpong will instead loop trying the lock operation
  37        over and over until it completes.
  38
  39    reading from the file can be enabled with
  40          --option=torture:read=true
  41
  42    writing to the file can be enabled with
  43          --option=torture:write=true
  44
  45 */
  46 #include "includes.h"
  47 #include "system/time.h"
  48 #include "system/filesys.h"
  49 #include "libcli/libcli.h"
  50 #include "torture/util.h"
  51
  52 static void lock_byte(struct smbcli_state *cli, int fd, int offset, int lock_timeout)
  53 {
  54         union smb_lock io;
  55         struct smb_lock_entry lock;
  56         NTSTATUS status;
  57
  58 try_again:
  59         ZERO_STRUCT(lock);
  60         io.lockx.in.ulock_cnt = 0;
  61         io.lockx.in.lock_cnt = 1;
  62
  63         lock.count = 1;
  64         lock.offset = offset;
  65         lock.pid = cli->tree->session->pid;
  66         io.lockx.level = RAW_LOCK_LOCKX;
  67         io.lockx.in.mode = LOCKING_ANDX_LARGE_FILES;
  68         io.lockx.in.timeout = lock_timeout;
  69         io.lockx.in.locks = &lock;
  70         io.lockx.in.file.fnum = fd;
  71
  72         status = smb_raw_lock(cli->tree, &io);
  73
  74         /* If we dont use timeouts and we got file lock conflict
  75            just try the lock again.
  76         */
  77         if (lock_timeout==0) {
  78                 if ( (NT_STATUS_EQUAL(NT_STATUS_FILE_LOCK_CONFLICT, status))
  79                    ||(NT_STATUS_EQUAL(NT_STATUS_LOCK_NOT_GRANTED, status)) ) {
  80                         goto try_again;
  81                 }
  82         }
  83
  84         if (!NT_STATUS_IS_OK(status)) {
  85                 DEBUG(0,("Lock failed\n"));
  86                 exit(1);
  87         }
  88 }
  89
  90 static void unlock_byte(struct smbcli_state *cli, int fd, int offset)
  91 {
  92         union smb_lock io;
  93         struct smb_lock_entry lock;
  94         NTSTATUS status;
  95
  96         ZERO_STRUCT(lock);
  97         io.lockx.in.ulock_cnt = 1;
  98         io.lockx.in.lock_cnt = 0;
  99
 100         lock.count = 1;
 101         lock.offset = offset;
 102         lock.pid = cli->tree->session->pid;
 103         io.lockx.level = RAW_LOCK_LOCKX;
 104         io.lockx.in.mode = LOCKING_ANDX_LARGE_FILES;
 105         io.lockx.in.timeout = 100000;
 106         io.lockx.in.locks = &lock;
 107         io.lockx.in.file.fnum = fd;
 108
 109         status = smb_raw_lock(cli->tree, &io);
 110
 111         if (!NT_STATUS_IS_OK(status)) {
 112                 DEBUG(0,("Unlock failed\n"));
 113                 exit(1);
 114         }
 115 }
 116
 117 static void write_byte(struct smbcli_state *cli, int fd, uint8_t c, int offset)
 118 {
 119         union smb_write io;
 120         NTSTATUS status;
 121
 122         io.generic.level = RAW_WRITE_WRITEX;
 123         io.writex.in.file.fnum = fd;
 124         io.writex.in.offset = offset;
 125         io.writex.in.wmode = 0;
 126         io.writex.in.remaining = 0;
 127         io.writex.in.count = 1;
 128         io.writex.in.data = &c;
 129
 130         status = smb_raw_write(cli->tree, &io);
 131         if (!NT_STATUS_IS_OK(status)) {
 132                 printf("write failed\n");
 133                 exit(1);
 134         }
 135 }
 136
 137 static void read_byte(struct smbcli_state *cli, int fd, uint8_t *c, int offset)
 138 {
 139         union smb_read io;
 140         NTSTATUS status;
 141
 142         io.generic.level = RAW_READ_READX;
 143         io.readx.in.file.fnum = fd;
 144         io.readx.in.mincnt = 1;
 145         io.readx.in.maxcnt = 1;
 146         io.readx.in.offset = offset;
 147         io.readx.in.remaining = 0;
 148         io.readx.in.read_for_execute = false;
 149         io.readx.out.data = c;
 150
 151         status = smb_raw_read(cli->tree, &io);
 152         if (!NT_STATUS_IS_OK(status)) {
 153                 printf("read failed\n");
 154                 exit(1);
 155         }
 156 }
 157
 158 /*
 159    ping pong
 160 */
 161 bool torture_ping_pong(struct torture_context *torture)
 162 {
 163         const char *fn;
 164         int num_locks;
 165         TALLOC_CTX *mem_ctx = talloc_new(torture);
 166         static bool do_reads;
 167         static bool do_writes;
 168         int lock_timeout;
 169         int fd;
 170         struct smbcli_state *cli;
 171         int i;
 172         uint8_t incr=0, last_incr=0;
 173         uint8_t *val;
 174         int count, loops;
 175         struct timeval start;
 176
 177         fn = torture_setting_string(torture, "filename", NULL);
 178         if (fn == NULL) {
 179                 DEBUG(0,("You must specify the filename using --option=torture:filename=...\n"));
 180                 return false;
 181         }
 182
 183         num_locks = torture_setting_int(torture, "num_locks", -1);
 184         if (num_locks == -1) {
 185                 DEBUG(0,("You must specify num_locks using --option=torture:num_locks=...\n"));
 186                 return false;
 187         }
 188
 189         do_reads     = torture_setting_bool(torture, "read", false);
 190         do_writes    = torture_setting_bool(torture, "write", false);
 191         lock_timeout =  torture_setting_int(torture, "lock_timeout", 100000);
 192
 193         if (!torture_open_connection(&cli, torture, 0)) {
 194                 DEBUG(0,("Could not open connection\n"));
 195                 return false;
 196         }
 197
 198         fd = smbcli_open(cli->tree, fn, O_RDWR|O_CREAT, DENY_NONE);
 199         if (fd == -1) {
 200                 printf("Failed to open %s\n", fn);
 201                 exit(1);
 202         }
 203
 204         write_byte(cli, fd, 0, num_locks);
 205         lock_byte(cli, fd, 0, lock_timeout);
 206
 207
 208         start = timeval_current();
 209         val = talloc_zero_array(mem_ctx, uint8_t, num_locks);
 210         i = 0;
 211         count = 0;
 212         loops = 0;
 213         while (1) {
 214                 lock_byte(cli, fd, (i+1)%num_locks, lock_timeout);
 215
 216                 if (do_reads) {
 217                         uint8_t c;
 218                         read_byte(cli, fd, &c, i);
 219                         incr   = c-val[i];
 220                         val[i] = c;
 221                 }
 222
 223                 if (do_writes) {
 224                         uint8_t c = val[i] + 1;
 225                         write_byte(cli, fd, c, i);
 226                 }
 227
 228                 unlock_byte(cli, fd, i);
 229
 230                 i = (i+1)%num_locks;
 231                 count++;
 232                 if (loops>num_locks && incr!=last_incr) {
 233                         last_incr = incr;
 234                         printf("data increment = %u\n", incr);
 235                         fflush(stdout);
 236                 }
 237                 if (timeval_elapsed(&start) > 1.0) {
 238                         printf("%8u locks/sec\r",
 239                                (unsigned)(2*count/timeval_elapsed(&start)));
 240                         fflush(stdout);
 241                         start = timeval_current();
 242                         count=0;
 243                 }
 244                 loops++;
 245         }
 246 }
 247