lib/tdb2/test/run-82-lockattr.c

   1 #include <ccan/tdb2/tdb.c>
   2 #include <ccan/tdb2/open.c>
   3 #include <ccan/tdb2/free.c>
   4 #include <ccan/tdb2/lock.c>
   5 #include <ccan/tdb2/io.c>
   6 #include <ccan/tdb2/hash.c>
   7 #include <ccan/tdb2/check.c>
   8 #include <ccan/tdb2/transaction.c>
   9 #include <ccan/tdb2/traverse.c>
  10 #include <ccan/tap/tap.h>
  11 #include "logging.h"
  12
  13 static int mylock(int fd, int rw, off_t off, off_t len, bool waitflag,
  14                   void *_err)
  15 {
  16         int *lock_err = _err;
  17         struct flock fl;
  18         int ret;
  19
  20         if (*lock_err) {
  21                 errno = *lock_err;
  22                 return -1;
  23         }
  24
  25         do {
  26                 fl.l_type = rw;
  27                 fl.l_whence = SEEK_SET;
  28                 fl.l_start = off;
  29                 fl.l_len = len;
  30
  31                 if (waitflag)
  32                         ret = fcntl(fd, F_SETLKW, &fl);
  33                 else
  34                         ret = fcntl(fd, F_SETLK, &fl);
  35         } while (ret != 0 && errno == EINTR);
  36
  37         return ret;
  38 }
  39
  40 static int myunlock(int fd, int rw, off_t off, off_t len, void *_err)
  41 {
  42         int *lock_err = _err;
  43         struct flock fl;
  44         int ret;
  45
  46         if (*lock_err) {
  47                 errno = *lock_err;
  48                 return -1;
  49         }
  50
  51         do {
  52                 fl.l_type = F_UNLCK;
  53                 fl.l_whence = SEEK_SET;
  54                 fl.l_start = off;
  55                 fl.l_len = len;
  56
  57                 ret = fcntl(fd, F_SETLKW, &fl);
  58         } while (ret != 0 && errno == EINTR);
  59
  60         return ret;
  61 }
  62
  63 static int trav_err;
  64 static int trav(struct tdb_context *tdb, TDB_DATA k, TDB_DATA d, int *err)
  65 {
  66         *err = trav_err;
  67         return 0;
  68 }
  69
  70 int main(int argc, char *argv[])
  71 {
  72         unsigned int i;
  73         struct tdb_context *tdb;
  74         int flags[] = { TDB_DEFAULT, TDB_NOMMAP,
  75                         TDB_CONVERT, TDB_NOMMAP|TDB_CONVERT };
  76         union tdb_attribute lock_attr;
  77         struct tdb_data key = tdb_mkdata("key", 3);
  78         struct tdb_data data = tdb_mkdata("data", 4);
  79         int lock_err;
  80
  81         lock_attr.base.attr = TDB_ATTRIBUTE_FLOCK;
  82         lock_attr.base.next = &tap_log_attr;
  83         lock_attr.flock.lock = mylock;
  84         lock_attr.flock.unlock = myunlock;
  85         lock_attr.flock.data = &lock_err;
  86
  87         plan_tests(sizeof(flags) / sizeof(flags[0]) * 80);
  88
  89         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  90                 struct tdb_data d;
  91
  92                 /* Nonblocking open; expect no error message. */
  93                 lock_err = EAGAIN;
  94                 tdb = tdb_open("run-82-lockattr.tdb", flags[i],
  95                                O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
  96                 ok(errno == lock_err, "Errno is %u", errno);
  97                 ok1(!tdb);
  98                 ok1(tap_log_messages == 0);
  99
 100                 lock_err = EINTR;
 101                 tdb = tdb_open("run-82-lockattr.tdb", flags[i],
 102                                O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
 103                 ok(errno == lock_err, "Errno is %u", errno);
 104                 ok1(!tdb);
 105                 ok1(tap_log_messages == 0);
 106
 107                 /* Forced fail open. */
 108                 lock_err = ENOMEM;
 109                 tdb = tdb_open("run-82-lockattr.tdb", flags[i],
 110                                O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
 111                 ok1(errno == lock_err);
 112                 ok1(!tdb);
 113                 ok1(tap_log_messages == 1);
 114                 tap_log_messages = 0;
 115
 116                 lock_err = 0;
 117                 tdb = tdb_open("run-82-lockattr.tdb", flags[i],
 118                                O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
 119                 if (!ok1(tdb))
 120                         continue;
 121                 ok1(tap_log_messages == 0);
 122
 123                 /* Nonblocking store. */
 124                 lock_err = EAGAIN;
 125                 ok1(tdb_store(tdb, key, data, TDB_REPLACE) == TDB_ERR_LOCK);
 126                 ok1(tap_log_messages == 0);
 127                 lock_err = EINTR;
 128                 ok1(tdb_store(tdb, key, data, TDB_REPLACE) == TDB_ERR_LOCK);
 129                 ok1(tap_log_messages == 0);
 130                 lock_err = ENOMEM;
 131                 ok1(tdb_store(tdb, key, data, TDB_REPLACE) == TDB_ERR_LOCK);
 132                 ok1(tap_log_messages == 1);
 133                 tap_log_messages = 0;
 134
 135                 /* Nonblocking fetch. */
 136                 lock_err = EAGAIN;
 137                 ok1(!tdb_exists(tdb, key));
 138                 ok1(tap_log_messages == 0);
 139                 lock_err = EINTR;
 140                 ok1(!tdb_exists(tdb, key));
 141                 ok1(tap_log_messages == 0);
 142                 lock_err = ENOMEM;
 143                 ok1(!tdb_exists(tdb, key));
 144                 ok1(tap_log_messages == 1);
 145                 tap_log_messages = 0;
 146
 147                 lock_err = EAGAIN;
 148                 ok1(tdb_fetch(tdb, key, &d) == TDB_ERR_LOCK);
 149                 ok1(tap_log_messages == 0);
 150                 lock_err = EINTR;
 151                 ok1(tdb_fetch(tdb, key, &d) == TDB_ERR_LOCK);
 152                 ok1(tap_log_messages == 0);
 153                 lock_err = ENOMEM;
 154                 ok1(tdb_fetch(tdb, key, &d) == TDB_ERR_LOCK);
 155                 ok1(tap_log_messages == 1);
 156                 tap_log_messages = 0;
 157
 158                 /* Nonblocking delete. */
 159                 lock_err = EAGAIN;
 160                 ok1(tdb_delete(tdb, key) == TDB_ERR_LOCK);
 161                 ok1(tap_log_messages == 0);
 162                 lock_err = EINTR;
 163                 ok1(tdb_delete(tdb, key) == TDB_ERR_LOCK);
 164                 ok1(tap_log_messages == 0);
 165                 lock_err = ENOMEM;
 166                 ok1(tdb_delete(tdb, key) == TDB_ERR_LOCK);
 167                 ok1(tap_log_messages == 1);
 168                 tap_log_messages = 0;
 169
 170                 /* Nonblocking locks. */
 171                 lock_err = EAGAIN;
 172                 ok1(tdb_chainlock(tdb, key) == TDB_ERR_LOCK);
 173                 ok1(tap_log_messages == 0);
 174                 lock_err = EINTR;
 175                 ok1(tdb_chainlock(tdb, key) == TDB_ERR_LOCK);
 176                 ok1(tap_log_messages == 0);
 177                 lock_err = ENOMEM;
 178                 ok1(tdb_chainlock(tdb, key) == TDB_ERR_LOCK);
 179                 ok1(tap_log_messages == 1);
 180                 tap_log_messages = 0;
 181
 182                 lock_err = EAGAIN;
 183                 ok1(tdb_chainlock_read(tdb, key) == TDB_ERR_LOCK);
 184                 ok1(tap_log_messages == 0);
 185                 lock_err = EINTR;
 186                 ok1(tdb_chainlock_read(tdb, key) == TDB_ERR_LOCK);
 187                 ok1(tap_log_messages == 0);
 188                 lock_err = ENOMEM;
 189                 ok1(tdb_chainlock_read(tdb, key) == TDB_ERR_LOCK);
 190                 ok1(tap_log_messages == 1);
 191                 tap_log_messages = 0;
 192
 193                 lock_err = EAGAIN;
 194                 ok1(tdb_lockall(tdb) == TDB_ERR_LOCK);
 195                 ok1(tap_log_messages == 0);
 196                 lock_err = EINTR;
 197                 ok1(tdb_lockall(tdb) == TDB_ERR_LOCK);
 198                 ok1(tap_log_messages == 0);
 199                 lock_err = ENOMEM;
 200                 ok1(tdb_lockall(tdb) == TDB_ERR_LOCK);
 201                 /* This actually does divide and conquer. */
 202                 ok1(tap_log_messages > 0);
 203                 tap_log_messages = 0;
 204
 205                 lock_err = EAGAIN;
 206                 ok1(tdb_lockall_read(tdb) == TDB_ERR_LOCK);
 207                 ok1(tap_log_messages == 0);
 208                 lock_err = EINTR;
 209                 ok1(tdb_lockall_read(tdb) == TDB_ERR_LOCK);
 210                 ok1(tap_log_messages == 0);
 211                 lock_err = ENOMEM;
 212                 ok1(tdb_lockall_read(tdb) == TDB_ERR_LOCK);
 213                 ok1(tap_log_messages > 0);
 214                 tap_log_messages = 0;
 215
 216                 /* Nonblocking traverse; go nonblock partway through. */
 217                 lock_err = 0;
 218                 ok1(tdb_store(tdb, key, data, TDB_REPLACE) == 0);
 219                 trav_err = EAGAIN;
 220                 ok1(tdb_traverse(tdb, trav, &lock_err) == TDB_ERR_LOCK);
 221                 ok1(tap_log_messages == 0);
 222                 trav_err = EINTR;
 223                 lock_err = 0;
 224                 ok1(tdb_traverse(tdb, trav, &lock_err) == TDB_ERR_LOCK);
 225                 ok1(tap_log_messages == 0);
 226                 trav_err = ENOMEM;
 227                 lock_err = 0;
 228                 ok1(tdb_traverse(tdb, trav, &lock_err) == TDB_ERR_LOCK);
 229                 ok1(tap_log_messages == 1);
 230                 tap_log_messages = 0;
 231
 232                 /* Nonblocking transactions. */
 233                 lock_err = EAGAIN;
 234                 ok1(tdb_transaction_start(tdb) == TDB_ERR_LOCK);
 235                 ok1(tap_log_messages == 0);
 236                 lock_err = EINTR;
 237                 ok1(tdb_transaction_start(tdb) == TDB_ERR_LOCK);
 238                 ok1(tap_log_messages == 0);
 239                 lock_err = ENOMEM;
 240                 ok1(tdb_transaction_start(tdb) == TDB_ERR_LOCK);
 241                 ok1(tap_log_messages == 1);
 242                 tap_log_messages = 0;
 243
 244                 /* Nonblocking transaction prepare. */
 245                 lock_err = 0;
 246                 ok1(tdb_transaction_start(tdb) == 0);
 247                 ok1(tdb_delete(tdb, key) == 0);
 248
 249                 lock_err = EAGAIN;
 250                 ok1(tdb_transaction_prepare_commit(tdb) == TDB_ERR_LOCK);
 251                 ok1(tap_log_messages == 0);
 252
 253                 lock_err = 0;
 254                 ok1(tdb_transaction_prepare_commit(tdb) == 0);
 255                 ok1(tdb_transaction_commit(tdb) == 0);
 256
 257                 /* And the transaction was committed, right? */
 258                 ok1(!tdb_exists(tdb, key));
 259                 tdb_close(tdb);
 260                 ok1(tap_log_messages == 0);
 261         }
 262         return exit_status();
 263 }