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#include "../common/tdb_private.h"
#include "../common/io.c"
#include "../common/tdb.c"
#include "../common/lock.c"
#include "../common/freelist.c"
#include "../common/traverse.c"
#include "../common/transaction.c"
#include "../common/error.c"
#include "../common/open.c"
#include "../common/check.c"
#include "../common/hash.c"
#include "../common/mutex.c"
#include "tap-interface.h"
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <stdarg.h>
#include "logging.h"
static void do_allrecord_lock(const char *name, int tdb_flags, int up,
int down)
{
struct tdb_context *tdb;
int ret;
ssize_t nread, nwritten;
char c = 0;
tdb = tdb_open_ex(name, 3, tdb_flags,
O_RDWR|O_CREAT, 0755, &taplogctx, NULL);
ok(tdb, "tdb_open_ex should succeed");
ret = tdb_lockall(tdb);
ok(ret == 0, "tdb_lockall should succeed");
nwritten = write(up, &c, sizeof(c));
ok(nwritten == sizeof(c), "write should succeed");
nread = read(down, &c, sizeof(c));
ok(nread == sizeof(c), "read should succeed");
ret = tdb_traverse(tdb, NULL, NULL);
ok(ret == -1, "do_allrecord_lock: traverse should fail");
nwritten = write(up, &c, sizeof(c));
ok(nwritten == sizeof(c), "write should succeed");
exit(0);
}
static void do_traverse(const char *name, int tdb_flags, int up, int down)
{
struct tdb_context *tdb;
int ret;
ssize_t nread, nwritten;
char c = 0;
tdb = tdb_open_ex(name, 3, tdb_flags,
O_RDWR|O_CREAT, 0755, &taplogctx, NULL);
ok(tdb, "tdb_open_ex should succeed");
ret = tdb_traverse(tdb, NULL, NULL);
ok(ret == 1, "do_traverse: tdb_traverse should return 1 record");
nwritten = write(up, &c, sizeof(c));
ok(nwritten == sizeof(c), "write should succeed");
nread = read(down, &c, sizeof(c));
ok(nread == sizeof(c), "read should succeed");
exit(0);
}
/*
* Process 1: get the allrecord_lock on a tdb.
* Process 2: start a traverse, this will stall waiting for the
* first chainlock: That is taken by the allrecord_lock
* Process 1: start a traverse: This will get EDEADLK in trying to
* get the TRANSACTION_LOCK. It will deadlock for mutexes,
* which don't have built-in deadlock detection.
*/
static int do_tests(const char *name, int tdb_flags)
{
struct tdb_context *tdb;
int ret;
pid_t traverse_child, allrecord_child;
int traverse_down[2];
int traverse_up[2];
int allrecord_down[2];
int allrecord_up[2];
char c;
ssize_t nread, nwritten;
TDB_DATA key, data;
key.dsize = strlen("hi");
key.dptr = discard_const_p(uint8_t, "hi");
data.dsize = strlen("world");
data.dptr = discard_const_p(uint8_t, "world");
tdb = tdb_open_ex(name, 3, tdb_flags,
O_RDWR|O_CREAT, 0755, &taplogctx, NULL);
ok(tdb, "tdb_open_ex should succeed");
ret = tdb_store(tdb, key, data, TDB_INSERT);
ok(ret == 0, "tdb_store should succeed");
ret = pipe(traverse_down);
ok(ret == 0, "pipe should succeed");
ret = pipe(traverse_up);
ok(ret == 0, "pipe should succeed");
ret = pipe(allrecord_down);
ok(ret == 0, "pipe should succeed");
ret = pipe(allrecord_up);
ok(ret == 0, "pipe should succeed");
allrecord_child = fork();
ok(allrecord_child != -1, "fork should succeed");
if (allrecord_child == 0) {
tdb_close(tdb);
close(traverse_up[0]);
close(traverse_up[1]);
close(traverse_down[0]);
close(traverse_down[1]);
close(allrecord_up[0]);
close(allrecord_down[1]);
do_allrecord_lock(name, tdb_flags,
allrecord_up[1], allrecord_down[0]);
exit(0);
}
close(allrecord_up[1]);
close(allrecord_down[0]);
nread = read(allrecord_up[0], &c, sizeof(c));
ok(nread == sizeof(c), "read should succeed");
traverse_child = fork();
ok(traverse_child != -1, "fork should succeed");
if (traverse_child == 0) {
tdb_close(tdb);
close(traverse_up[0]);
close(traverse_down[1]);
close(allrecord_up[0]);
close(allrecord_down[1]);
do_traverse(name, tdb_flags,
traverse_up[1], traverse_down[0]);
exit(0);
}
close(traverse_up[1]);
close(traverse_down[0]);
poll(NULL, 0, 1000);
nwritten = write(allrecord_down[1], &c, sizeof(c));
ok(nwritten == sizeof(c), "write should succeed");
nread = read(traverse_up[0], &c, sizeof(c));
ok(nread == sizeof(c), "read should succeed");
nwritten = write(traverse_down[1], &c, sizeof(c));
ok(nwritten == sizeof(c), "write should succeed");
nread = read(allrecord_up[0], &c, sizeof(c));
ok(nread == sizeof(c), "ret should succeed");
close(traverse_up[0]);
close(traverse_down[1]);
close(allrecord_up[0]);
close(allrecord_down[1]);
diag("%s tests done", name);
return exit_status();
}
int main(int argc, char *argv[])
{
int ret;
bool mutex_support;
mutex_support = tdb_runtime_check_for_robust_mutexes();
ret = do_tests("marklock-deadlock-fcntl.tdb",
TDB_CLEAR_IF_FIRST |
TDB_INCOMPATIBLE_HASH);
ok(ret == 0, "marklock-deadlock-fcntl.tdb tests should succeed");
if (!mutex_support) {
skip(1, "No robust mutex support, "
"skipping marklock-deadlock-mutex.tdb tests");
return exit_status();
}
ret = do_tests("marklock-deadlock-mutex.tdb",
TDB_CLEAR_IF_FIRST |
TDB_MUTEX_LOCKING |
TDB_INCOMPATIBLE_HASH);
ok(ret == 0, "marklock-deadlock-mutex.tdb tests should succeed");
return exit_status();
}
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