Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 500 insertions, 0 deletions

diff --git a/lib/tdb/tools/tdbtorture.c b/lib/tdb/tools/tdbtorture.c
new file mode 100644
index 0000000..1063f14
--- /dev/null
+++ b/lib/tdb/tools/tdbtorture.c
@@ -0,0 +1,500 @@
+/* this tests tdb by doing lots of ops from several simultaneous
+   writers - that stresses the locking code.
+*/
+
+#include "replace.h"
+#include "system/time.h"
+#include "system/wait.h"
+#include "system/filesys.h"
+#include "tdb.h"
+
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif
+
+
+#define REOPEN_PROB 30
+#define DELETE_PROB 8
+#define STORE_PROB 4
+#define APPEND_PROB 6
+#define TRANSACTION_PROB 10
+#define TRANSACTION_PREPARE_PROB 2
+#define LOCKSTORE_PROB 5
+#define TRAVERSE_PROB 20
+#define TRAVERSE_READ_PROB 20
+#define CULL_PROB 100
+#define KEYLEN 3
+#define DATALEN 100
+
+static struct tdb_context *db;
+static int in_transaction;
+static int error_count;
+static int always_transaction = 0;
+static int hash_size = 2;
+static unsigned loopnum;
+static int count_pipe;
+static bool mutex = false;
+static struct tdb_logging_context log_ctx;
+
+#ifdef PRINTF_ATTRIBUTE
+static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
+#endif
+static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...)
+{
+	va_list ap;
+
+	/* trace level messages do not indicate an error */
+	if (level != TDB_DEBUG_TRACE) {
+		error_count++;
+	}
+
+	va_start(ap, format);
+	vfprintf(stdout, format, ap);
+	va_end(ap);
+	fflush(stdout);
+#if 0
+	if (level != TDB_DEBUG_TRACE) {
+		char *ptr;
+		signal(SIGUSR1, SIG_IGN);
+		asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
+		system(ptr);
+		free(ptr);
+	}
+#endif
+}
+
+static void fatal(const char *why)
+{
+	perror(why);
+	error_count++;
+}
+
+static char *randbuf(int len)
+{
+	char *buf;
+	int i;
+	buf = (char *)malloc(len+1);
+
+	for (i=0;i<len;i++) {
+		buf[i] = 'a' + (rand() % 26);
+	}
+	buf[i] = 0;
+	return buf;
+}
+
+static int cull_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
+			 void *state)
+{
+#if CULL_PROB
+	if (random() % CULL_PROB == 0) {
+		tdb_delete(tdb, key);
+	}
+#endif
+	return 0;
+}
+
+static bool do_transaction(void)
+{
+#if TRANSACTION_PROB
+	if (mutex) {
+		return false;
+	}
+	if (random() % TRANSACTION_PROB == 0) {
+		return true;
+	}
+#endif
+	return false;
+}
+
+static void addrec_db(void)
+{
+	int klen, dlen;
+	char *k, *d;
+	TDB_DATA key, data;
+
+	klen = 1 + (rand() % KEYLEN);
+	dlen = 1 + (rand() % DATALEN);
+
+	k = randbuf(klen);
+	d = randbuf(dlen);
+
+	key.dptr = (unsigned char *)k;
+	key.dsize = klen+1;
+
+	data.dptr = (unsigned char *)d;
+	data.dsize = dlen+1;
+
+#if REOPEN_PROB
+	if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
+		tdb_reopen_all(0);
+		goto next;
+	}
+#endif
+
+	if (in_transaction == 0 &&
+	    (always_transaction || do_transaction())) {
+		if (tdb_transaction_start(db) != 0) {
+			fatal("tdb_transaction_start failed");
+		}
+		in_transaction++;
+		goto next;
+	}
+	if (in_transaction && do_transaction()) {
+		if (random() % TRANSACTION_PREPARE_PROB == 0) {
+			if (tdb_transaction_prepare_commit(db) != 0) {
+				fatal("tdb_transaction_prepare_commit failed");
+			}
+		}
+		if (tdb_transaction_commit(db) != 0) {
+			fatal("tdb_transaction_commit failed");
+		}
+		in_transaction--;
+		goto next;
+	}
+	if (in_transaction && do_transaction()) {
+		if (tdb_transaction_cancel(db) != 0) {
+			fatal("tdb_transaction_cancel failed");
+		}
+		in_transaction--;
+		goto next;
+	}
+
+#if DELETE_PROB
+	if (random() % DELETE_PROB == 0) {
+		tdb_delete(db, key);
+		goto next;
+	}
+#endif
+
+#if STORE_PROB
+	if (random() % STORE_PROB == 0) {
+		if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
+			fatal("tdb_store failed");
+		}
+		goto next;
+	}
+#endif
+
+#if APPEND_PROB
+	if (random() % APPEND_PROB == 0) {
+		if (tdb_append(db, key, data) != 0) {
+			fatal("tdb_append failed");
+		}
+		goto next;
+	}
+#endif
+
+#if LOCKSTORE_PROB
+	if (random() % LOCKSTORE_PROB == 0) {
+		tdb_chainlock(db, key);
+		data = tdb_fetch(db, key);
+		if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
+			fatal("tdb_store failed");
+		}
+		if (data.dptr) free(data.dptr);
+		tdb_chainunlock(db, key);
+		goto next;
+	} 
+#endif
+
+#if TRAVERSE_PROB
+	if (random() % TRAVERSE_PROB == 0) {
+		tdb_traverse(db, cull_traverse, NULL);
+		goto next;
+	}
+#endif
+
+#if TRAVERSE_READ_PROB
+	if (random() % TRAVERSE_READ_PROB == 0) {
+		tdb_traverse_read(db, NULL, NULL);
+		goto next;
+	}
+#endif
+
+	data = tdb_fetch(db, key);
+	if (data.dptr) free(data.dptr);
+
+next:
+	free(k);
+	free(d);
+}
+
+static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
+                       void *state)
+{
+	tdb_delete(tdb, key);
+	return 0;
+}
+
+static void usage(void)
+{
+	printf("Usage: tdbtorture [-t] [-k] [-m] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
+	exit(0);
+}
+
+static void send_count_and_suicide(int sig)
+{
+	ssize_t ret;
+
+	/* This ensures our successor can continue where we left off. */
+	do {
+		ret = write(count_pipe, &loopnum, sizeof(loopnum));
+	} while (ret == -1 && errno == EINTR);
+	/* This gives a unique signature. */
+	kill(getpid(), SIGUSR2);
+}
+
+static int run_child(const char *filename, int i, int seed, unsigned num_loops, unsigned start)
+{
+	int tdb_flags = TDB_DEFAULT|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH;
+
+	if (mutex) {
+		tdb_flags |= TDB_MUTEX_LOCKING;
+	}
+
+	db = tdb_open_ex(filename, hash_size, tdb_flags,
+			 O_RDWR | O_CREAT, 0600, &log_ctx, NULL);
+	if (!db) {
+		fatal("db open failed");
+	}
+
+	srand(seed + i);
+	srandom(seed + i);
+
+	/* Set global, then we're ready to handle being killed. */
+	loopnum = start;
+	signal(SIGUSR1, send_count_and_suicide);
+
+	for (;loopnum<num_loops && error_count == 0;loopnum++) {
+		addrec_db();
+	}
+
+	if (error_count == 0) {
+		tdb_traverse_read(db, NULL, NULL);
+		if (always_transaction) {
+			while (in_transaction) {
+				tdb_transaction_cancel(db);
+				in_transaction--;
+			}
+			if (tdb_transaction_start(db) != 0)
+				fatal("tdb_transaction_start failed");
+		}
+		tdb_traverse(db, traverse_fn, NULL);
+		tdb_traverse(db, traverse_fn, NULL);
+		if (always_transaction) {
+			if (tdb_transaction_commit(db) != 0)
+				fatal("tdb_transaction_commit failed");
+		}
+	}
+
+	tdb_close(db);
+
+	return (error_count < 100 ? error_count : 100);
+}
+
+static char *test_path(const char *filename)
+{
+	const char *prefix = getenv("TEST_DATA_PREFIX");
+
+	if (prefix) {
+		char *path = NULL;
+		int ret;
+
+		ret = asprintf(&path, "%s/%s", prefix, filename);
+		if (ret == -1) {
+			return NULL;
+		}
+		return path;
+	}
+
+	return strdup(filename);
+}
+
+int main(int argc, char * const *argv)
+{
+	int i, seed = -1;
+	int num_loops = 5000;
+	int num_procs = 3;
+	int c, pfds[2];
+	extern char *optarg;
+	pid_t *pids;
+	int kill_random = 0;
+	int *done;
+	char *test_tdb;
+
+	log_ctx.log_fn = tdb_log;
+
+	while ((c = getopt(argc, argv, "n:l:s:H:thkm")) != -1) {
+		switch (c) {
+		case 'n':
+			num_procs = strtol(optarg, NULL, 0);
+			break;
+		case 'l':
+			num_loops = strtol(optarg, NULL, 0);
+			break;
+		case 'H':
+			hash_size = strtol(optarg, NULL, 0);
+			break;
+		case 's':
+			seed = strtol(optarg, NULL, 0);
+			break;
+		case 't':
+			always_transaction = 1;
+			break;
+		case 'k':
+			kill_random = 1;
+			break;
+		case 'm':
+			mutex = tdb_runtime_check_for_robust_mutexes();
+			if (!mutex) {
+				printf("tdb_runtime_check_for_robust_mutexes() returned false\n");
+				exit(1);
+			}
+			break;
+		default:
+			usage();
+		}
+	}
+
+	test_tdb = test_path("torture.tdb");
+
+	unlink(test_tdb);
+
+	if (seed == -1) {
+		seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
+	}
+
+	printf("Testing with %d processes, %d loops, %d hash_size, seed=%d%s\n",
+	       num_procs, num_loops, hash_size, seed,
+	       (always_transaction ? " (all within transactions)" : ""));
+
+	if (num_procs == 1 && !kill_random) {
+		/* Don't fork for this case, makes debugging easier. */
+		error_count = run_child(test_tdb, 0, seed, num_loops, 0);
+		goto done;
+	}
+
+	pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
+	if (pids == NULL) {
+		perror("Unable to allocate memory for pids");
+		exit(1);
+	}
+	done = (int *)calloc(sizeof(int), num_procs);
+	if (done == NULL) {
+		perror("Unable to allocate memory for done");
+		exit(1);
+	}
+
+	if (pipe(pfds) != 0) {
+		perror("Creating pipe");
+		exit(1);
+	}
+	count_pipe = pfds[1];
+
+	for (i=0;i<num_procs;i++) {
+		if ((pids[i]=fork()) == 0) {
+			close(pfds[0]);
+			exit(run_child(test_tdb, i, seed, num_loops, 0));
+		}
+	}
+
+	while (num_procs) {
+		int status, j;
+		pid_t pid;
+
+		if (error_count != 0) {
+			/* try and stop the test on any failure */
+			for (j=0;j<num_procs;j++) {
+				if (pids[j] != 0) {
+					kill(pids[j], SIGTERM);
+				}
+			}
+		}
+
+		pid = waitpid(-1, &status, kill_random ? WNOHANG : 0);
+		if (pid == 0) {
+			struct timeval tv;
+
+			/* Sleep for 1/10 second. */
+			tv.tv_sec = 0;
+			tv.tv_usec = 100000;
+			select(0, NULL, NULL, NULL, &tv);
+
+			/* Kill someone. */
+			kill(pids[random() % num_procs], SIGUSR1);
+			continue;
+		}
+
+		if (pid == -1) {
+			perror("failed to wait for child\n");
+			exit(1);
+		}
+
+		for (j=0;j<num_procs;j++) {
+			if (pids[j] == pid) break;
+		}
+		if (j == num_procs) {
+			printf("unknown child %d exited!?\n", (int)pid);
+			exit(1);
+		}
+		if (WIFSIGNALED(status)) {
+			if (WTERMSIG(status) == SIGUSR2
+			    || WTERMSIG(status) == SIGUSR1) {
+				/* SIGUSR2 means they wrote to pipe. */
+				if (WTERMSIG(status) == SIGUSR2) {
+					ssize_t ret;
+
+					do {
+						ret = read(pfds[0], &done[j],
+							   sizeof(done[j]));
+					} while (ret == -1 && errno == EINTR);
+				}
+				pids[j] = fork();
+				if (pids[j] == 0)
+					exit(run_child(test_tdb, j, seed,
+						       num_loops, done[j]));
+				printf("Restarting child %i for %u-%u\n",
+				       j, done[j], num_loops);
+				continue;
+			}
+			printf("child %d exited with signal %d\n",
+			       (int)pid, WTERMSIG(status));
+			error_count++;
+		} else {
+			if (WEXITSTATUS(status) != 0) {
+				printf("child %d exited with status %d\n",
+				       (int)pid, WEXITSTATUS(status));
+				error_count++;
+			}
+		}
+		ARRAY_DEL_ELEMENT(pids, j, num_procs);
+		num_procs--;
+	}
+
+	free(pids);
+
+done:
+	if (error_count == 0) {
+		int tdb_flags = TDB_DEFAULT;
+
+		if (mutex) {
+			tdb_flags |= TDB_NOLOCK;
+		}
+
+		db = tdb_open_ex(test_tdb, hash_size, tdb_flags,
+				 O_RDWR, 0, &log_ctx, NULL);
+		if (!db) {
+			fatal("db open failed\n");
+			exit(1);
+		}
+		if (tdb_check(db, NULL, NULL) == -1) {
+			printf("db check failed\n");
+			exit(1);
+		}
+		tdb_close(db);
+		printf("OK\n");
+	}
+
+	free(test_tdb);
+	return error_count;
+}