git.ozlabs.org Git - ccan/blob - ccan/ntdb/test/api-82-lockattr.c

   1 #include "private.h" // for ntdb_fcntl_unlock
   2 #include "ntdb.h"
   3 #include "tap-interface.h"
   4 #include <errno.h>
   5 #include "logging.h"
   6
   7 static int mylock(int fd, int rw, off_t off, off_t len, bool waitflag,
   8                   void *_err)
   9 {
  10         int *lock_err = _err;
  11         struct flock fl;
  12         int ret;
  13
  14         if (*lock_err) {
  15                 errno = *lock_err;
  16                 return -1;
  17         }
  18
  19         do {
  20                 fl.l_type = rw;
  21                 fl.l_whence = SEEK_SET;
  22                 fl.l_start = off;
  23                 fl.l_len = len;
  24
  25                 if (waitflag)
  26                         ret = fcntl(fd, F_SETLKW, &fl);
  27                 else
  28                         ret = fcntl(fd, F_SETLK, &fl);
  29         } while (ret != 0 && errno == EINTR);
  30
  31         return ret;
  32 }
  33
  34 static int trav_err;
  35 static int trav(struct ntdb_context *ntdb, NTDB_DATA k, NTDB_DATA d, int *terr)
  36 {
  37         *terr = trav_err;
  38         return 0;
  39 }
  40
  41 int main(int argc, char *argv[])
  42 {
  43         unsigned int i;
  44         struct ntdb_context *ntdb;
  45         int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
  46                         NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT };
  47         union ntdb_attribute lock_attr;
  48         NTDB_DATA key = ntdb_mkdata("key", 3);
  49         NTDB_DATA data = ntdb_mkdata("data", 4);
  50         int lock_err;
  51
  52         lock_attr.base.attr = NTDB_ATTRIBUTE_FLOCK;
  53         lock_attr.base.next = &tap_log_attr;
  54         lock_attr.flock.lock = mylock;
  55         lock_attr.flock.unlock = ntdb_fcntl_unlock;
  56         lock_attr.flock.data = &lock_err;
  57
  58         plan_tests(sizeof(flags) / sizeof(flags[0]) * 81);
  59
  60         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  61                 NTDB_DATA d;
  62
  63                 /* Nonblocking open; expect no error message. */
  64                 lock_err = EAGAIN;
  65                 ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
  66                                  O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
  67                 ok(errno == lock_err, "Errno is %u", errno);
  68                 ok1(!ntdb);
  69                 ok1(tap_log_messages == 0);
  70
  71                 lock_err = EINTR;
  72                 ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
  73                                  O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
  74                 ok(errno == lock_err, "Errno is %u", errno);
  75                 ok1(!ntdb);
  76                 ok1(tap_log_messages == 0);
  77
  78                 /* Forced fail open. */
  79                 lock_err = ENOMEM;
  80                 ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
  81                                  O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
  82                 ok1(errno == lock_err);
  83                 ok1(!ntdb);
  84                 ok1(tap_log_messages == 1);
  85                 tap_log_messages = 0;
  86
  87                 lock_err = 0;
  88                 ntdb = ntdb_open("run-82-lockattr.ntdb", flags[i]|MAYBE_NOSYNC,
  89                                  O_RDWR|O_CREAT|O_TRUNC, 0600, &lock_attr);
  90                 if (!ok1(ntdb))
  91                         continue;
  92                 ok1(tap_log_messages == 0);
  93
  94                 /* Nonblocking store. */
  95                 lock_err = EAGAIN;
  96                 ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == NTDB_ERR_LOCK);
  97                 ok1(tap_log_messages == 0);
  98                 lock_err = EINTR;
  99                 ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == NTDB_ERR_LOCK);
 100                 ok1(tap_log_messages == 0);
 101                 lock_err = ENOMEM;
 102                 ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == NTDB_ERR_LOCK);
 103                 ok1(tap_log_messages == 1);
 104                 tap_log_messages = 0;
 105
 106                 /* Nonblocking fetch. */
 107                 lock_err = EAGAIN;
 108                 ok1(!ntdb_exists(ntdb, key));
 109                 ok1(tap_log_messages == 0);
 110                 lock_err = EINTR;
 111                 ok1(!ntdb_exists(ntdb, key));
 112                 ok1(tap_log_messages == 0);
 113                 lock_err = ENOMEM;
 114                 ok1(!ntdb_exists(ntdb, key));
 115                 ok1(tap_log_messages == 1);
 116                 tap_log_messages = 0;
 117
 118                 lock_err = EAGAIN;
 119                 ok1(ntdb_fetch(ntdb, key, &d) == NTDB_ERR_LOCK);
 120                 ok1(tap_log_messages == 0);
 121                 lock_err = EINTR;
 122                 ok1(ntdb_fetch(ntdb, key, &d) == NTDB_ERR_LOCK);
 123                 ok1(tap_log_messages == 0);
 124                 lock_err = ENOMEM;
 125                 ok1(ntdb_fetch(ntdb, key, &d) == NTDB_ERR_LOCK);
 126                 ok1(tap_log_messages == 1);
 127                 tap_log_messages = 0;
 128
 129                 /* Nonblocking delete. */
 130                 lock_err = EAGAIN;
 131                 ok1(ntdb_delete(ntdb, key) == NTDB_ERR_LOCK);
 132                 ok1(tap_log_messages == 0);
 133                 lock_err = EINTR;
 134                 ok1(ntdb_delete(ntdb, key) == NTDB_ERR_LOCK);
 135                 ok1(tap_log_messages == 0);
 136                 lock_err = ENOMEM;
 137                 ok1(ntdb_delete(ntdb, key) == NTDB_ERR_LOCK);
 138                 ok1(tap_log_messages == 1);
 139                 tap_log_messages = 0;
 140
 141                 /* Nonblocking locks. */
 142                 lock_err = EAGAIN;
 143                 ok1(ntdb_chainlock(ntdb, key) == NTDB_ERR_LOCK);
 144                 ok1(tap_log_messages == 0);
 145                 lock_err = EINTR;
 146                 ok1(ntdb_chainlock(ntdb, key) == NTDB_ERR_LOCK);
 147                 ok1(tap_log_messages == 0);
 148                 lock_err = ENOMEM;
 149                 ok1(ntdb_chainlock(ntdb, key) == NTDB_ERR_LOCK);
 150                 ok1(tap_log_messages == 1);
 151                 tap_log_messages = 0;
 152
 153                 lock_err = EAGAIN;
 154                 ok1(ntdb_chainlock_read(ntdb, key) == NTDB_ERR_LOCK);
 155                 ok1(tap_log_messages == 0);
 156                 lock_err = EINTR;
 157                 ok1(ntdb_chainlock_read(ntdb, key) == NTDB_ERR_LOCK);
 158                 ok1(tap_log_messages == 0);
 159                 lock_err = ENOMEM;
 160                 ok1(ntdb_chainlock_read(ntdb, key) == NTDB_ERR_LOCK);
 161                 ok1(tap_log_messages == 1);
 162                 tap_log_messages = 0;
 163
 164                 lock_err = EAGAIN;
 165                 ok1(ntdb_lockall(ntdb) == NTDB_ERR_LOCK);
 166                 ok1(tap_log_messages == 0);
 167                 lock_err = EINTR;
 168                 ok1(ntdb_lockall(ntdb) == NTDB_ERR_LOCK);
 169                 ok1(tap_log_messages == 0);
 170                 lock_err = ENOMEM;
 171                 ok1(ntdb_lockall(ntdb) == NTDB_ERR_LOCK);
 172                 /* This actually does divide and conquer. */
 173                 ok1(tap_log_messages > 0);
 174                 tap_log_messages = 0;
 175
 176                 lock_err = EAGAIN;
 177                 ok1(ntdb_lockall_read(ntdb) == NTDB_ERR_LOCK);
 178                 ok1(tap_log_messages == 0);
 179                 lock_err = EINTR;
 180                 ok1(ntdb_lockall_read(ntdb) == NTDB_ERR_LOCK);
 181                 ok1(tap_log_messages == 0);
 182                 lock_err = ENOMEM;
 183                 ok1(ntdb_lockall_read(ntdb) == NTDB_ERR_LOCK);
 184                 ok1(tap_log_messages > 0);
 185                 tap_log_messages = 0;
 186
 187                 /* Nonblocking traverse; go nonblock partway through. */
 188                 lock_err = 0;
 189                 ok1(ntdb_store(ntdb, key, data, NTDB_REPLACE) == 0);
 190                 /* Need two entries to ensure two lock attempts! */
 191                 ok1(ntdb_store(ntdb, ntdb_mkdata("key2", 4), data,
 192                                NTDB_REPLACE) == 0);
 193                 trav_err = EAGAIN;
 194                 ok1(ntdb_traverse(ntdb, trav, &lock_err) == NTDB_ERR_LOCK);
 195                 ok1(tap_log_messages == 0);
 196                 trav_err = EINTR;
 197                 lock_err = 0;
 198                 ok1(ntdb_traverse(ntdb, trav, &lock_err) == NTDB_ERR_LOCK);
 199                 ok1(tap_log_messages == 0);
 200                 trav_err = ENOMEM;
 201                 lock_err = 0;
 202                 ok1(ntdb_traverse(ntdb, trav, &lock_err) == NTDB_ERR_LOCK);
 203                 ok1(tap_log_messages == 1);
 204                 tap_log_messages = 0;
 205
 206                 /* Nonblocking transactions. */
 207                 lock_err = EAGAIN;
 208                 ok1(ntdb_transaction_start(ntdb) == NTDB_ERR_LOCK);
 209                 ok1(tap_log_messages == 0);
 210                 lock_err = EINTR;
 211                 ok1(ntdb_transaction_start(ntdb) == NTDB_ERR_LOCK);
 212                 ok1(tap_log_messages == 0);
 213                 lock_err = ENOMEM;
 214                 ok1(ntdb_transaction_start(ntdb) == NTDB_ERR_LOCK);
 215                 ok1(tap_log_messages == 1);
 216                 tap_log_messages = 0;
 217
 218                 /* Nonblocking transaction prepare. */
 219                 lock_err = 0;
 220                 ok1(ntdb_transaction_start(ntdb) == 0);
 221                 ok1(ntdb_delete(ntdb, key) == 0);
 222
 223                 lock_err = EAGAIN;
 224                 ok1(ntdb_transaction_prepare_commit(ntdb) == NTDB_ERR_LOCK);
 225                 ok1(tap_log_messages == 0);
 226
 227                 lock_err = 0;
 228                 ok1(ntdb_transaction_prepare_commit(ntdb) == 0);
 229                 ok1(ntdb_transaction_commit(ntdb) == 0);
 230
 231                 /* And the transaction was committed, right? */
 232                 ok1(!ntdb_exists(ntdb, key));
 233                 ntdb_close(ntdb);
 234                 ok1(tap_log_messages == 0);
 235         }
 236         return exit_status();
 237 }