#include "private.h" #include #include "lock-tracking.h" static ssize_t pwrite_check(int fd, const void *buf, size_t count, off_t offset); static ssize_t write_check(int fd, const void *buf, size_t count); static int ftruncate_check(int fd, off_t length); #define pwrite pwrite_check #define write write_check #define fcntl fcntl_with_lockcheck #define ftruncate ftruncate_check #include "ntdb-source.h" #include "tap-interface.h" #include #include #include #include "external-agent.h" #include "logging.h" static struct agent *agent; static bool opened; static int errors = 0; #define TEST_DBNAME "run-56-open-during-transaction.ntdb" #undef write #undef pwrite #undef fcntl #undef ftruncate static bool is_same(const char *snapshot, const char *latest, off_t len) { unsigned i; for (i = 0; i < len; i++) { if (snapshot[i] != latest[i]) return false; } return true; } static bool compare_file(int fd, const char *snapshot, off_t snapshot_len) { char *contents; bool ret; /* over-length read serves as length check. */ contents = malloc(snapshot_len+1); ret = pread(fd, contents, snapshot_len+1, 0) == snapshot_len && is_same(snapshot, contents, snapshot_len); free(contents); return ret; } static void check_file_intact(int fd) { enum agent_return ret; struct stat st; char *contents; fstat(fd, &st); contents = malloc(st.st_size); if (pread(fd, contents, st.st_size, 0) != st.st_size) { diag("Read fail"); errors++; return; } /* Ask agent to open file. */ ret = external_agent_operation(agent, OPEN, TEST_DBNAME); /* It's OK to open it, but it must not have changed! */ if (!compare_file(fd, contents, st.st_size)) { diag("Agent changed file after opening %s", agent_return_name(ret)); errors++; } if (ret == SUCCESS) { ret = external_agent_operation(agent, CLOSE, NULL); if (ret != SUCCESS) { diag("Agent failed to close ntdb: %s", agent_return_name(ret)); errors++; } } else if (ret != WOULD_HAVE_BLOCKED) { diag("Agent opening file gave %s", agent_return_name(ret)); errors++; } free(contents); } static void after_unlock(int fd) { if (opened) check_file_intact(fd); } static ssize_t pwrite_check(int fd, const void *buf, size_t count, off_t offset) { if (opened) check_file_intact(fd); return pwrite(fd, buf, count, offset); } static ssize_t write_check(int fd, const void *buf, size_t count) { if (opened) check_file_intact(fd); return write(fd, buf, count); } static int ftruncate_check(int fd, off_t length) { if (opened) check_file_intact(fd); return ftruncate(fd, length); } int main(int argc, char *argv[]) { const int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP, NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT }; int i; struct ntdb_context *ntdb; NTDB_DATA key, data; plan_tests(sizeof(flags)/sizeof(flags[0]) * 5); agent = prepare_external_agent(); if (!agent) err(1, "preparing agent"); unlock_callback = after_unlock; for (i = 0; i < sizeof(flags)/sizeof(flags[0]); i++) { diag("Test with %s and %s\n", (flags[i] & NTDB_CONVERT) ? "CONVERT" : "DEFAULT", (flags[i] & NTDB_NOMMAP) ? "no mmap" : "mmap"); unlink(TEST_DBNAME); ntdb = ntdb_open(TEST_DBNAME, flags[i]|MAYBE_NOSYNC, O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr); ok1(ntdb); opened = true; ok1(ntdb_transaction_start(ntdb) == 0); key = ntdb_mkdata("hi", strlen("hi")); data = ntdb_mkdata("world", strlen("world")); ok1(ntdb_store(ntdb, key, data, NTDB_INSERT) == 0); ok1(ntdb_transaction_commit(ntdb) == 0); ok(!errors, "We had %u open errors", errors); opened = false; ntdb_close(ntdb); } return exit_status(); }