lib/tdb2/test/run-57-die-during-transaction.c

   1 #include "private.h"
   2 #include <unistd.h>
   3 #include "lock-tracking.h"
   4 #include "tap-interface.h"
   5 #include <stdlib.h>
   6 #include <assert.h>
   7 static ssize_t pwrite_check(int fd, const void *buf, size_t count, off_t offset);
   8 static ssize_t write_check(int fd, const void *buf, size_t count);
   9 static int ftruncate_check(int fd, off_t length);
  10
  11 #define pwrite pwrite_check
  12 #define write write_check
  13 #define fcntl fcntl_with_lockcheck
  14 #define ftruncate ftruncate_check
  15
  16 /* There's a malloc inside transaction_setup_recovery, and valgrind complains
  17  * when we longjmp and leak it. */
  18 #define MAX_ALLOCATIONS 10
  19 static void *allocated[MAX_ALLOCATIONS];
  20 static unsigned max_alloc = 0;
  21
  22 static void *malloc_noleak(size_t len)
  23 {
  24         unsigned int i;
  25
  26         for (i = 0; i < MAX_ALLOCATIONS; i++)
  27                 if (!allocated[i]) {
  28                         allocated[i] = malloc(len);
  29                         if (i > max_alloc) {
  30                                 max_alloc = i;
  31                                 diag("max_alloc: %i", max_alloc);
  32                         }
  33                         return allocated[i];
  34                 }
  35         diag("Too many allocations!");
  36         abort();
  37 }
  38
  39 static void *realloc_noleak(void *p, size_t size)
  40 {
  41         unsigned int i;
  42
  43         for (i = 0; i < MAX_ALLOCATIONS; i++) {
  44                 if (allocated[i] == p) {
  45                         if (i > max_alloc) {
  46                                 max_alloc = i;
  47                                 diag("max_alloc: %i", max_alloc);
  48                         }
  49                         return allocated[i] = realloc(p, size);
  50                 }
  51         }
  52         diag("Untracked realloc!");
  53         abort();
  54 }
  55
  56 static void free_noleak(void *p)
  57 {
  58         unsigned int i;
  59
  60         /* We don't catch asprintf, so don't complain if we miss one. */
  61         for (i = 0; i < MAX_ALLOCATIONS; i++) {
  62                 if (allocated[i] == p) {
  63                         allocated[i] = NULL;
  64                         break;
  65                 }
  66         }
  67         free(p);
  68 }
  69
  70 static void free_all(void)
  71 {
  72         unsigned int i;
  73
  74         for (i = 0; i < MAX_ALLOCATIONS; i++) {
  75                 free(allocated[i]);
  76                 allocated[i] = NULL;
  77         }
  78 }
  79
  80 #define malloc malloc_noleak
  81 #define free free_noleak
  82 #define realloc realloc_noleak
  83
  84 #include "tdb2-source.h"
  85
  86 #undef malloc
  87 #undef free
  88 #undef realloc
  89 #undef write
  90 #undef pwrite
  91 #undef fcntl
  92 #undef ftruncate
  93
  94 #include <stdbool.h>
  95 #include <stdarg.h>
  96 #include <setjmp.h>
  97 #include "external-agent.h"
  98 #include "logging.h"
  99
 100 static bool in_transaction;
 101 static int target, current;
 102 static jmp_buf jmpbuf;
 103 #define TEST_DBNAME "run-57-die-during-transaction.tdb"
 104 #define KEY_STRING "helloworld"
 105
 106 static void maybe_die(int fd)
 107 {
 108         if (in_transaction && current++ == target) {
 109                 longjmp(jmpbuf, 1);
 110         }
 111 }
 112
 113 static ssize_t pwrite_check(int fd,
 114                             const void *buf, size_t count, off_t offset)
 115 {
 116         ssize_t ret;
 117
 118         maybe_die(fd);
 119
 120         ret = pwrite(fd, buf, count, offset);
 121         if (ret != count)
 122                 return ret;
 123
 124         maybe_die(fd);
 125         return ret;
 126 }
 127
 128 static ssize_t write_check(int fd, const void *buf, size_t count)
 129 {
 130         ssize_t ret;
 131
 132         maybe_die(fd);
 133
 134         ret = write(fd, buf, count);
 135         if (ret != count)
 136                 return ret;
 137
 138         maybe_die(fd);
 139         return ret;
 140 }
 141
 142 static int ftruncate_check(int fd, off_t length)
 143 {
 144         int ret;
 145
 146         maybe_die(fd);
 147
 148         ret = ftruncate(fd, length);
 149
 150         maybe_die(fd);
 151         return ret;
 152 }
 153
 154 static bool test_death(enum operation op, struct agent *agent, int flags)
 155 {
 156         struct tdb_context *tdb = NULL;
 157         TDB_DATA key;
 158         enum agent_return ret;
 159         int needed_recovery = 0;
 160
 161         current = target = 0;
 162 reset:
 163         unlink(TEST_DBNAME);
 164         tdb = tdb_open(TEST_DBNAME, flags|TDB_NOMMAP,
 165                        O_CREAT|O_TRUNC|O_RDWR, 0600, &tap_log_attr);
 166         if (!tdb) {
 167                 diag("Failed opening TDB: %s", strerror(errno));
 168                 return false;
 169         }
 170
 171         if (setjmp(jmpbuf) != 0) {
 172                 /* We're partway through.  Simulate our death. */
 173                 close(tdb->file->fd);
 174                 forget_locking();
 175                 in_transaction = false;
 176
 177                 ret = external_agent_operation(agent, NEEDS_RECOVERY, "");
 178                 if (ret == SUCCESS)
 179                         needed_recovery++;
 180                 else if (ret != FAILED) {
 181                         diag("Step %u agent NEEDS_RECOVERY = %s", current,
 182                              agent_return_name(ret));
 183                         return false;
 184                 }
 185
 186                 ret = external_agent_operation(agent, op, KEY_STRING);
 187                 if (ret != SUCCESS) {
 188                         diag("Step %u op %s failed = %s", current,
 189                              operation_name(op),
 190                              agent_return_name(ret));
 191                         return false;
 192                 }
 193
 194                 ret = external_agent_operation(agent, NEEDS_RECOVERY, "");
 195                 if (ret != FAILED) {
 196                         diag("Still needs recovery after step %u = %s",
 197                              current, agent_return_name(ret));
 198                         return false;
 199                 }
 200
 201                 ret = external_agent_operation(agent, CHECK, "");
 202                 if (ret != SUCCESS) {
 203                         diag("Step %u check failed = %s", current,
 204                              agent_return_name(ret));
 205                         return false;
 206                 }
 207
 208                 ret = external_agent_operation(agent, CLOSE, "");
 209                 if (ret != SUCCESS) {
 210                         diag("Step %u close failed = %s", current,
 211                              agent_return_name(ret));
 212                         return false;
 213                 }
 214
 215                 /* Suppress logging as this tries to use closed fd. */
 216                 suppress_logging = true;
 217                 suppress_lockcheck = true;
 218                 tdb_close(tdb);
 219                 suppress_logging = false;
 220                 suppress_lockcheck = false;
 221                 target++;
 222                 current = 0;
 223                 free_all();
 224                 goto reset;
 225         }
 226
 227         /* Put key for agent to fetch. */
 228         key = tdb_mkdata(KEY_STRING, strlen(KEY_STRING));
 229         if (tdb_store(tdb, key, key, TDB_INSERT) != 0)
 230                 return false;
 231
 232         /* This is the key we insert in transaction. */
 233         key.dsize--;
 234
 235         ret = external_agent_operation(agent, OPEN, TEST_DBNAME);
 236         if (ret != SUCCESS)
 237                 errx(1, "Agent failed to open: %s", agent_return_name(ret));
 238
 239         ret = external_agent_operation(agent, FETCH, KEY_STRING);
 240         if (ret != SUCCESS)
 241                 errx(1, "Agent failed find key: %s", agent_return_name(ret));
 242
 243         in_transaction = true;
 244         if (tdb_transaction_start(tdb) != 0)
 245                 return false;
 246
 247         if (tdb_store(tdb, key, key, TDB_INSERT) != 0)
 248                 return false;
 249
 250         if (tdb_transaction_commit(tdb) != 0)
 251                 return false;
 252
 253         in_transaction = false;
 254
 255         /* We made it! */
 256         diag("Completed %u runs", current);
 257         tdb_close(tdb);
 258         ret = external_agent_operation(agent, CLOSE, "");
 259         if (ret != SUCCESS) {
 260                 diag("Step %u close failed = %s", current,
 261                      agent_return_name(ret));
 262                 return false;
 263         }
 264
 265         ok1(needed_recovery);
 266         ok1(locking_errors == 0);
 267         ok1(forget_locking() == 0);
 268         locking_errors = 0;
 269         return true;
 270 }
 271
 272 int main(int argc, char *argv[])
 273 {
 274         enum operation ops[] = { FETCH, STORE, TRANSACTION_START };
 275         struct agent *agent;
 276         int i, flags;
 277
 278         plan_tests(24);
 279         unlock_callback = maybe_die;
 280
 281         external_agent_free = free_noleak;
 282         agent = prepare_external_agent();
 283         if (!agent)
 284                 err(1, "preparing agent");
 285
 286         for (flags = TDB_DEFAULT; flags <= TDB_VERSION1; flags += TDB_VERSION1) {
 287                 for (i = 0; i < sizeof(ops)/sizeof(ops[0]); i++) {
 288                         diag("Testing %s after death", operation_name(ops[i]));
 289                         ok1(test_death(ops[i], agent, flags));
 290                 }
 291         }
 292
 293         free_external_agent(agent);
 294         return exit_status();
 295 }