Move common libraries from root to lib/.

5 files changed, 1658 insertions, 0 deletions

diff --git a/lib/tdb/tools/tdbbackup.c b/lib/tdb/tools/tdbbackup.c
new file mode 100644
index 0000000000..6f3ca48314
--- /dev/null
+++ b/lib/tdb/tools/tdbbackup.c
@@ -0,0 +1,300 @@
+/* 
+   Unix SMB/CIFS implementation.
+   low level tdb backup and restore utility
+   Copyright (C) Andrew Tridgell              2002
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+
+  This program is meant for backup/restore of tdb databases. Typical usage would be:
+     tdbbackup *.tdb
+  when Samba shuts down cleanly, which will make a backup of all the local databases
+  to *.bak files. Then on Samba startup you would use:
+     tdbbackup -v *.tdb
+  and this will check the databases for corruption and if corruption is detected then
+  the backup will be restored.
+
+  You may also like to do a backup on a regular basis while Samba is
+  running, perhaps using cron.
+
+  The reason this program is needed is to cope with power failures
+  while Samba is running. A power failure could lead to database
+  corruption and Samba will then not start correctly.
+
+  Note that many of the databases in Samba are transient and thus
+  don't need to be backed up, so you can optimise the above a little
+  by only running the backup on the critical databases.
+
+ */
+
+#include "replace.h"
+#include "system/locale.h"
+#include "system/time.h"
+#include "system/filesys.h"
+#include "system/wait.h"
+#include "tdb.h"
+
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif
+
+static int failed;
+
+static char *add_suffix(const char *name, const char *suffix)
+{
+	char *ret;
+	int len = strlen(name) + strlen(suffix) + 1;
+	ret = (char *)malloc(len);
+	if (!ret) {
+		fprintf(stderr,"Out of memory!\n");
+		exit(1);
+	}
+	snprintf(ret, len, "%s%s", name, suffix);
+	return ret;
+}
+
+static int copy_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+	TDB_CONTEXT *tdb_new = (TDB_CONTEXT *)state;
+
+	if (tdb_store(tdb_new, key, dbuf, TDB_INSERT) != 0) {
+		fprintf(stderr,"Failed to insert into %s\n", tdb_name(tdb_new));
+		failed = 1;
+		return 1;
+	}
+	return 0;
+}
+
+
+static int test_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+	return 0;
+}
+
+/*
+  carefully backup a tdb, validating the contents and
+  only doing the backup if its OK
+  this function is also used for restore
+*/
+static int backup_tdb(const char *old_name, const char *new_name, int hash_size)
+{
+	TDB_CONTEXT *tdb;
+	TDB_CONTEXT *tdb_new;
+	char *tmp_name;
+	struct stat st;
+	int count1, count2;
+
+	tmp_name = add_suffix(new_name, ".tmp");
+
+	/* stat the old tdb to find its permissions */
+	if (stat(old_name, &st) != 0) {
+		perror(old_name);
+		free(tmp_name);
+		return 1;
+	}
+
+	/* open the old tdb */
+	tdb = tdb_open(old_name, 0, 0, O_RDWR, 0);
+	if (!tdb) {
+		printf("Failed to open %s\n", old_name);
+		free(tmp_name);
+		return 1;
+	}
+
+	/* create the new tdb */
+	unlink(tmp_name);
+	tdb_new = tdb_open(tmp_name,
+			   hash_size ? hash_size : tdb_hash_size(tdb),
+			   TDB_DEFAULT, O_RDWR|O_CREAT|O_EXCL, 
+			   st.st_mode & 0777);
+	if (!tdb_new) {
+		perror(tmp_name);
+		free(tmp_name);
+		return 1;
+	}
+
+	/* lock the old tdb */
+	if (tdb_lockall(tdb) != 0) {
+		fprintf(stderr,"Failed to lock %s\n", old_name);
+		tdb_close(tdb);
+		tdb_close(tdb_new);
+		unlink(tmp_name);
+		free(tmp_name);
+		return 1;
+	}
+
+	failed = 0;
+
+	/* traverse and copy */
+	count1 = tdb_traverse(tdb, copy_fn, (void *)tdb_new);
+	if (count1 < 0 || failed) {
+		fprintf(stderr,"failed to copy %s\n", old_name);
+		tdb_close(tdb);
+		tdb_close(tdb_new);
+		unlink(tmp_name);
+		free(tmp_name);
+		return 1;
+	}
+
+	/* close the old tdb */
+	tdb_close(tdb);
+
+	/* close the new tdb and re-open read-only */
+	tdb_close(tdb_new);
+	tdb_new = tdb_open(tmp_name, 0, TDB_DEFAULT, O_RDONLY, 0);
+	if (!tdb_new) {
+		fprintf(stderr,"failed to reopen %s\n", tmp_name);
+		unlink(tmp_name);
+		perror(tmp_name);
+		free(tmp_name);
+		return 1;
+	}
+	
+	/* traverse the new tdb to confirm */
+	count2 = tdb_traverse(tdb_new, test_fn, NULL);
+	if (count2 != count1) {
+		fprintf(stderr,"failed to copy %s\n", old_name);
+		tdb_close(tdb_new);
+		unlink(tmp_name);
+		free(tmp_name);
+		return 1;
+	}
+
+	/* make sure the new tdb has reached stable storage */
+	fsync(tdb_fd(tdb_new));
+
+	/* close the new tdb and rename it to .bak */
+	tdb_close(tdb_new);
+	if (rename(tmp_name, new_name) != 0) {
+		perror(new_name);
+		free(tmp_name);
+		return 1;
+	}
+
+	free(tmp_name);
+
+	return 0;
+}
+
+/*
+  verify a tdb and if it is corrupt then restore from *.bak
+*/
+static int verify_tdb(const char *fname, const char *bak_name)
+{
+	TDB_CONTEXT *tdb;
+	int count = -1;
+
+	/* open the tdb */
+	tdb = tdb_open(fname, 0, 0, O_RDONLY, 0);
+
+	/* traverse the tdb, then close it */
+	if (tdb) {
+		count = tdb_traverse(tdb, test_fn, NULL);
+		tdb_close(tdb);
+	}
+
+	/* count is < 0 means an error */
+	if (count < 0) {
+		printf("restoring %s\n", fname);
+		return backup_tdb(bak_name, fname, 0);
+	}
+
+	printf("%s : %d records\n", fname, count);
+
+	return 0;
+}
+
+/*
+  see if one file is newer than another
+*/
+static int file_newer(const char *fname1, const char *fname2)
+{
+	struct stat st1, st2;
+	if (stat(fname1, &st1) != 0) {
+		return 0;
+	}
+	if (stat(fname2, &st2) != 0) {
+		return 1;
+	}
+	return (st1.st_mtime > st2.st_mtime);
+}
+
+static void usage(void)
+{
+	printf("Usage: tdbbackup [options] <fname...>\n\n");
+	printf("   -h            this help message\n");
+	printf("   -s suffix     set the backup suffix\n");
+	printf("   -v            verify mode (restore if corrupt)\n");
+	printf("   -n hashsize   set the new hash size for the backup\n");
+}
+		
+
+ int main(int argc, char *argv[])
+{
+	int i;
+	int ret = 0;
+	int c;
+	int verify = 0;
+	int hashsize = 0;
+	const char *suffix = ".bak";
+
+	while ((c = getopt(argc, argv, "vhs:n:")) != -1) {
+		switch (c) {
+		case 'h':
+			usage();
+			exit(0);
+		case 'v':
+			verify = 1;
+			break;
+		case 's':
+			suffix = optarg;
+			break;
+		case 'n':
+			hashsize = atoi(optarg);
+			break;
+		}
+	}
+
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 1) {
+		usage();
+		exit(1);
+	}
+
+	for (i=0; i<argc; i++) {
+		const char *fname = argv[i];
+		char *bak_name;
+
+		bak_name = add_suffix(fname, suffix);
+
+		if (verify) {
+			if (verify_tdb(fname, bak_name) != 0) {
+				ret = 1;
+			}
+		} else {
+			if (file_newer(fname, bak_name) &&
+			    backup_tdb(fname, bak_name, hashsize) != 0) {
+				ret = 1;
+			}
+		}
+
+		free(bak_name);
+	}
+
+	return ret;
+}
diff --git a/lib/tdb/tools/tdbdump.c b/lib/tdb/tools/tdbdump.c
new file mode 100644
index 0000000000..8d930383b0
--- /dev/null
+++ b/lib/tdb/tools/tdbdump.c
@@ -0,0 +1,116 @@
+/* 
+   Unix SMB/CIFS implementation.
+   simple tdb dump util
+   Copyright (C) Andrew Tridgell              2001
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "system/locale.h"
+#include "system/time.h"
+#include "system/filesys.h"
+#include "system/wait.h"
+#include "tdb.h"
+
+static void print_data(TDB_DATA d)
+{
+	unsigned char *p = (unsigned char *)d.dptr;
+	int len = d.dsize;
+	while (len--) {
+		if (isprint(*p) && !strchr("\"\\", *p)) {
+			fputc(*p, stdout);
+		} else {
+			printf("\\%02X", *p);
+		}
+		p++;
+	}
+}
+
+static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+	printf("{\n");
+	printf("key(%d) = \"", (int)key.dsize);
+	print_data(key);
+	printf("\"\n");
+	printf("data(%d) = \"", (int)dbuf.dsize);
+	print_data(dbuf);
+	printf("\"\n");
+	printf("}\n");
+	return 0;
+}
+
+static int dump_tdb(const char *fname, const char *keyname)
+{
+	TDB_CONTEXT *tdb;
+	TDB_DATA key, value;
+	
+	tdb = tdb_open(fname, 0, 0, O_RDONLY, 0);
+	if (!tdb) {
+		printf("Failed to open %s\n", fname);
+		return 1;
+	}
+
+	if (!keyname) {
+		tdb_traverse(tdb, traverse_fn, NULL);
+	} else {
+		key.dptr = discard_const_p(uint8_t,keyname);
+		key.dsize = strlen( keyname);
+		value = tdb_fetch(tdb, key);
+		if (!value.dptr) {
+			return 1;
+		} else {
+			print_data(value);
+			free(value.dptr);
+		}
+	}
+
+	return 0;
+}
+
+static void usage( void)
+{
+	printf( "Usage: tdbdump [options] <filename>\n\n");
+	printf( "   -h          this help message\n");
+	printf( "   -k keyname  dumps value of keyname\n");
+}
+
+ int main(int argc, char *argv[])
+{
+	char *fname, *keyname=NULL;
+	int c;
+
+	if (argc < 2) {
+		printf("Usage: tdbdump <fname>\n");
+		exit(1);
+	}
+
+	while ((c = getopt( argc, argv, "hk:")) != -1) {
+		switch (c) {
+		case 'h':
+			usage();
+			exit( 0);
+		case 'k':
+			keyname = optarg;
+			break;
+		default:
+			usage();
+			exit( 1);
+		}
+	}
+
+	fname = argv[optind];
+
+	return dump_tdb(fname, keyname);
+}
diff --git a/lib/tdb/tools/tdbtest.c b/lib/tdb/tools/tdbtest.c
new file mode 100644
index 0000000000..416bc50a5b
--- /dev/null
+++ b/lib/tdb/tools/tdbtest.c
@@ -0,0 +1,265 @@
+/* a test program for tdb - the trivial database */
+
+#include "replace.h"
+#include "tdb.h"
+#include "system/filesys.h"
+#include "system/time.h"
+
+#include <gdbm.h>
+
+
+#define DELETE_PROB 7
+#define STORE_PROB 5
+
+static struct tdb_context *db;
+static GDBM_FILE gdbm;
+
+struct timeval tp1,tp2;
+
+static void _start_timer(void)
+{
+	gettimeofday(&tp1,NULL);
+}
+
+static double _end_timer(void)
+{
+	gettimeofday(&tp2,NULL);
+	return((tp2.tv_sec - tp1.tv_sec) + 
+	       (tp2.tv_usec - tp1.tv_usec)*1.0e-6);
+}
+
+static void fatal(const char *why)
+{
+	perror(why);
+	exit(1);
+}
+
+#ifdef PRINTF_ATTRIBUTE
+static void tdb_log(struct tdb_context *tdb, int level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
+#endif
+static void tdb_log(struct tdb_context *tdb, int level, const char *format, ...)
+{
+	va_list ap;
+    
+	va_start(ap, format);
+	vfprintf(stdout, format, ap);
+	va_end(ap);
+	fflush(stdout);
+}
+
+static void compare_db(void)
+{
+	TDB_DATA d, key, nextkey;
+	datum gd, gkey, gnextkey;
+
+	key = tdb_firstkey(db);
+	while (key.dptr) {
+		d = tdb_fetch(db, key);
+		gkey.dptr = key.dptr;
+		gkey.dsize = key.dsize;
+
+		gd = gdbm_fetch(gdbm, gkey);
+
+		if (!gd.dptr) fatal("key not in gdbm");
+		if (gd.dsize != d.dsize) fatal("data sizes differ");
+		if (memcmp(gd.dptr, d.dptr, d.dsize)) {
+			fatal("data differs");
+		}
+
+		nextkey = tdb_nextkey(db, key);
+		free(key.dptr);
+		free(d.dptr);
+		free(gd.dptr);
+		key = nextkey;
+	}
+
+	gkey = gdbm_firstkey(gdbm);
+	while (gkey.dptr) {
+		gd = gdbm_fetch(gdbm, gkey);
+		key.dptr = gkey.dptr;
+		key.dsize = gkey.dsize;
+
+		d = tdb_fetch(db, key);
+
+		if (!d.dptr) fatal("key not in db");
+		if (d.dsize != gd.dsize) fatal("data sizes differ");
+		if (memcmp(d.dptr, gd.dptr, gd.dsize)) {
+			fatal("data differs");
+		}
+
+		gnextkey = gdbm_nextkey(gdbm, gkey);
+		free(gkey.dptr);
+		free(gd.dptr);
+		free(d.dptr);
+		gkey = gnextkey;
+	}
+}
+
+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 void addrec_db(void)
+{
+	int klen, dlen;
+	char *k, *d;
+	TDB_DATA key, data;
+
+	klen = 1 + (rand() % 4);
+	dlen = 1 + (rand() % 100);
+
+	k = randbuf(klen);
+	d = randbuf(dlen);
+
+	key.dptr = k;
+	key.dsize = klen+1;
+
+	data.dptr = d;
+	data.dsize = dlen+1;
+
+	if (rand() % DELETE_PROB == 0) {
+		tdb_delete(db, key);
+	} else if (rand() % STORE_PROB == 0) {
+		if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
+			fatal("tdb_store failed");
+		}
+	} else {
+		data = tdb_fetch(db, key);
+		if (data.dptr) free(data.dptr);
+	}
+
+	free(k);
+	free(d);
+}
+
+static void addrec_gdbm(void)
+{
+	int klen, dlen;
+	char *k, *d;
+	datum key, data;
+
+	klen = 1 + (rand() % 4);
+	dlen = 1 + (rand() % 100);
+
+	k = randbuf(klen);
+	d = randbuf(dlen);
+
+	key.dptr = k;
+	key.dsize = klen+1;
+
+	data.dptr = d;
+	data.dsize = dlen+1;
+
+	if (rand() % DELETE_PROB == 0) {
+		gdbm_delete(gdbm, key);
+	} else if (rand() % STORE_PROB == 0) {
+		if (gdbm_store(gdbm, key, data, GDBM_REPLACE) != 0) {
+			fatal("gdbm_store failed");
+		}
+	} else {
+		data = gdbm_fetch(gdbm, key);
+		if (data.dptr) free(data.dptr);
+	}
+
+	free(k);
+	free(d);
+}
+
+static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+#if 0
+	printf("[%s] [%s]\n", key.dptr, dbuf.dptr);
+#endif
+	tdb_delete(tdb, key);
+	return 0;
+}
+
+static void merge_test(void)
+{
+	int i;
+	char keys[5][2];
+	char tdata[] = "test";
+	TDB_DATA key, data;
+	
+	for (i = 0; i < 5; i++) {
+		snprintf(keys[i],2, "%d", i);
+		key.dptr = keys[i];
+		key.dsize = 2;
+		
+		data.dptr = tdata;
+		data.dsize = 4;
+		
+		if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
+			fatal("tdb_store failed");
+		}
+	}
+
+	key.dptr = keys[0];
+	tdb_delete(db, key);
+	key.dptr = keys[4];
+	tdb_delete(db, key);
+	key.dptr = keys[2];
+	tdb_delete(db, key);
+	key.dptr = keys[1];
+	tdb_delete(db, key);
+	key.dptr = keys[3];
+	tdb_delete(db, key);
+}
+
+ int main(int argc, const char *argv[])
+{
+	int i, seed=0;
+	int loops = 10000;
+	int num_entries;
+	char test_gdbm[] = "test.gdbm";
+
+	unlink("test.gdbm");
+
+	db = tdb_open("test.tdb", 0, TDB_CLEAR_IF_FIRST, 
+		      O_RDWR | O_CREAT | O_TRUNC, 0600);
+	gdbm = gdbm_open(test_gdbm, 512, GDBM_WRITER|GDBM_NEWDB|GDBM_FAST, 
+			 0600, NULL);
+
+	if (!db || !gdbm) {
+		fatal("db open failed");
+	}
+
+#if 1
+	srand(seed);
+	_start_timer();
+	for (i=0;i<loops;i++) addrec_gdbm();
+	printf("gdbm got %.2f ops/sec\n", i/_end_timer());
+#endif
+
+	merge_test();
+
+	srand(seed);
+	_start_timer();
+	for (i=0;i<loops;i++) addrec_db();
+	printf("tdb got %.2f ops/sec\n", i/_end_timer());
+
+	if (tdb_validate_freelist(db, &num_entries) == -1) {
+		printf("tdb freelist is corrupt\n");
+	} else {
+		printf("tdb freelist is good (%d entries)\n", num_entries);
+	}
+
+	compare_db();
+
+	printf("traversed %d records\n", tdb_traverse(db, traverse_fn, NULL));
+	printf("traversed %d records\n", tdb_traverse(db, traverse_fn, NULL));
+
+	tdb_close(db);
+	gdbm_close(gdbm);
+
+	return 0;
+}
diff --git a/lib/tdb/tools/tdbtool.c b/lib/tdb/tools/tdbtool.c
new file mode 100644
index 0000000000..d104ccd7c4
--- /dev/null
+++ b/lib/tdb/tools/tdbtool.c
@@ -0,0 +1,659 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Samba database functions
+   Copyright (C) Andrew Tridgell              1999-2000
+   Copyright (C) Paul `Rusty' Russell		   2000
+   Copyright (C) Jeremy Allison			   2000
+   Copyright (C) Andrew Esh                        2001
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "system/locale.h"
+#include "system/time.h"
+#include "system/filesys.h"
+#include "system/wait.h"
+#include "tdb.h"
+
+static int do_command(void);
+const char *cmdname;
+char *arg1, *arg2;
+size_t arg1len, arg2len;
+int bIterate = 0;
+char *line;
+TDB_DATA iterate_kbuf;
+char cmdline[1024];
+static int disable_mmap;
+
+enum commands {
+	CMD_CREATE_TDB,
+	CMD_OPEN_TDB,
+	CMD_ERASE,
+	CMD_DUMP,
+	CMD_INSERT,
+	CMD_MOVE,
+	CMD_STORE,
+	CMD_SHOW,
+	CMD_KEYS,
+	CMD_HEXKEYS,
+	CMD_DELETE,
+	CMD_LIST_HASH_FREE,
+	CMD_LIST_FREE,
+	CMD_INFO,
+	CMD_MMAP,
+	CMD_SPEED,
+	CMD_FIRST,
+	CMD_NEXT,
+	CMD_SYSTEM,
+	CMD_QUIT,
+	CMD_HELP
+};
+
+typedef struct {
+	const char *name;
+	enum commands cmd;
+} COMMAND_TABLE;
+
+COMMAND_TABLE cmd_table[] = {
+	{"create",	CMD_CREATE_TDB},
+	{"open",	CMD_OPEN_TDB},
+	{"erase",	CMD_ERASE},
+	{"dump",	CMD_DUMP},
+	{"insert",	CMD_INSERT},
+	{"move",	CMD_MOVE},
+	{"store",	CMD_STORE},
+	{"show",	CMD_SHOW},
+	{"keys",	CMD_KEYS},
+	{"hexkeys",	CMD_HEXKEYS},
+	{"delete",	CMD_DELETE},
+	{"list",	CMD_LIST_HASH_FREE},
+	{"free",	CMD_LIST_FREE},
+	{"info",	CMD_INFO},
+	{"speed",	CMD_SPEED},
+	{"mmap",	CMD_MMAP},
+	{"first",	CMD_FIRST},
+	{"1",		CMD_FIRST},
+	{"next",	CMD_NEXT},
+	{"n",		CMD_NEXT},
+	{"quit",	CMD_QUIT},
+	{"q",		CMD_QUIT},
+	{"!",		CMD_SYSTEM},
+	{NULL,		CMD_HELP}
+};
+
+struct timeval tp1,tp2;
+
+static void _start_timer(void)
+{
+	gettimeofday(&tp1,NULL);
+}
+
+static double _end_timer(void)
+{
+	gettimeofday(&tp2,NULL);
+	return((tp2.tv_sec - tp1.tv_sec) + 
+	       (tp2.tv_usec - tp1.tv_usec)*1.0e-6);
+}
+
+/* a tdb tool for manipulating a tdb database */
+
+static TDB_CONTEXT *tdb;
+
+static int print_rec(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state);
+static int print_key(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state);
+static int print_hexkey(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state);
+
+static void print_asc(const char *buf,int len)
+{
+	int i;
+
+	/* We're probably printing ASCII strings so don't try to display
+	   the trailing NULL character. */
+
+	if (buf[len - 1] == 0)
+	        len--;
+
+	for (i=0;i<len;i++)
+		printf("%c",isprint(buf[i])?buf[i]:'.');
+}
+
+static void print_data(const char *buf,int len)
+{
+	int i=0;
+	if (len<=0) return;
+	printf("[%03X] ",i);
+	for (i=0;i<len;) {
+		printf("%02X ",(int)((unsigned char)buf[i]));
+		i++;
+		if (i%8 == 0) printf(" ");
+		if (i%16 == 0) {      
+			print_asc(&buf[i-16],8); printf(" ");
+			print_asc(&buf[i-8],8); printf("\n");
+			if (i<len) printf("[%03X] ",i);
+		}
+	}
+	if (i%16) {
+		int n;
+		
+		n = 16 - (i%16);
+		printf(" ");
+		if (n>8) printf(" ");
+		while (n--) printf("   ");
+		
+		n = i%16;
+		if (n > 8) n = 8;
+		print_asc(&buf[i-(i%16)],n); printf(" ");
+		n = (i%16) - n;
+		if (n>0) print_asc(&buf[i-n],n); 
+		printf("\n");    
+	}
+}
+
+static void help(void)
+{
+	printf("\n"
+"tdbtool: \n"
+"  create    dbname     : create a database\n"
+"  open      dbname     : open an existing database\n"
+"  erase                : erase the database\n"
+"  dump                 : dump the database as strings\n"
+"  keys                 : dump the database keys as strings\n"
+"  hexkeys              : dump the database keys as hex values\n"
+"  info                 : print summary info about the database\n"
+"  insert    key  data  : insert a record\n"
+"  move      key  file  : move a record to a destination tdb\n"
+"  store     key  data  : store a record (replace)\n"
+"  show      key        : show a record by key\n"
+"  delete    key        : delete a record by key\n"
+"  list                 : print the database hash table and freelist\n"
+"  free                 : print the database freelist\n"
+"  ! command            : execute system command\n"             
+"  1 | first            : print the first record\n"
+"  n | next             : print the next record\n"
+"  q | quit             : terminate\n"
+"  \\n                   : repeat 'next' command\n"
+"\n");
+}
+
+static void terror(const char *why)
+{
+	printf("%s\n", why);
+}
+
+static void create_tdb(const char *tdbname)
+{
+	if (tdb) tdb_close(tdb);
+	tdb = tdb_open(tdbname, 0, TDB_CLEAR_IF_FIRST | (disable_mmap?TDB_NOMMAP:0),
+		       O_RDWR | O_CREAT | O_TRUNC, 0600);
+	if (!tdb) {
+		printf("Could not create %s: %s\n", tdbname, strerror(errno));
+	}
+}
+
+static void open_tdb(const char *tdbname)
+{
+	if (tdb) tdb_close(tdb);
+	tdb = tdb_open(tdbname, 0, disable_mmap?TDB_NOMMAP:0, O_RDWR, 0600);
+	if (!tdb) {
+		printf("Could not open %s: %s\n", tdbname, strerror(errno));
+	}
+}
+
+static void insert_tdb(char *keyname, size_t keylen, char* data, size_t datalen)
+{
+	TDB_DATA key, dbuf;
+
+	if ((keyname == NULL) || (keylen == 0)) {
+		terror("need key");
+		return;
+	}
+
+	key.dptr = (unsigned char *)keyname;
+	key.dsize = keylen;
+	dbuf.dptr = (unsigned char *)data;
+	dbuf.dsize = datalen;
+
+	if (tdb_store(tdb, key, dbuf, TDB_INSERT) == -1) {
+		terror("insert failed");
+	}
+}
+
+static void store_tdb(char *keyname, size_t keylen, char* data, size_t datalen)
+{
+	TDB_DATA key, dbuf;
+
+	if ((keyname == NULL) || (keylen == 0)) {
+		terror("need key");
+		return;
+	}
+
+	if ((data == NULL) || (datalen == 0)) {
+		terror("need data");
+		return;
+	}
+
+	key.dptr = (unsigned char *)keyname;
+	key.dsize = keylen;
+	dbuf.dptr = (unsigned char *)data;
+	dbuf.dsize = datalen;
+
+	printf("Storing key:\n");
+	print_rec(tdb, key, dbuf, NULL);
+
+	if (tdb_store(tdb, key, dbuf, TDB_REPLACE) == -1) {
+		terror("store failed");
+	}
+}
+
+static void show_tdb(char *keyname, size_t keylen)
+{
+	TDB_DATA key, dbuf;
+
+	if ((keyname == NULL) || (keylen == 0)) {
+		terror("need key");
+		return;
+	}
+
+	key.dptr = (unsigned char *)keyname;
+	key.dsize = keylen;
+
+	dbuf = tdb_fetch(tdb, key);
+	if (!dbuf.dptr) {
+	    terror("fetch failed");
+	    return;
+	}
+	
+	print_rec(tdb, key, dbuf, NULL);
+	
+	free( dbuf.dptr );
+	
+	return;
+}
+
+static void delete_tdb(char *keyname, size_t keylen)
+{
+	TDB_DATA key;
+
+	if ((keyname == NULL) || (keylen == 0)) {
+		terror("need key");
+		return;
+	}
+
+	key.dptr = (unsigned char *)keyname;
+	key.dsize = keylen;
+
+	if (tdb_delete(tdb, key) != 0) {
+		terror("delete failed");
+	}
+}
+
+static void move_rec(char *keyname, size_t keylen, char* tdbname)
+{
+	TDB_DATA key, dbuf;
+	TDB_CONTEXT *dst_tdb;
+
+	if ((keyname == NULL) || (keylen == 0)) {
+		terror("need key");
+		return;
+	}
+
+	if ( !tdbname ) {
+		terror("need destination tdb name");
+		return;
+	}
+
+	key.dptr = (unsigned char *)keyname;
+	key.dsize = keylen;
+
+	dbuf = tdb_fetch(tdb, key);
+	if (!dbuf.dptr) {
+		terror("fetch failed");
+		return;
+	}
+	
+	print_rec(tdb, key, dbuf, NULL);
+	
+	dst_tdb = tdb_open(tdbname, 0, 0, O_RDWR, 0600);
+	if ( !dst_tdb ) {
+		terror("unable to open destination tdb");
+		return;
+	}
+	
+	if ( tdb_store( dst_tdb, key, dbuf, TDB_REPLACE ) == -1 ) {
+		terror("failed to move record");
+	}
+	else
+		printf("record moved\n");
+	
+	tdb_close( dst_tdb );
+	
+	return;
+}
+
+static int print_rec(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+	printf("\nkey %d bytes\n", (int)key.dsize);
+	print_asc((const char *)key.dptr, key.dsize);
+	printf("\ndata %d bytes\n", (int)dbuf.dsize);
+	print_data((const char *)dbuf.dptr, dbuf.dsize);
+	return 0;
+}
+
+static int print_key(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+	printf("key %d bytes: ", (int)key.dsize);
+	print_asc((const char *)key.dptr, key.dsize);
+	printf("\n");
+	return 0;
+}
+
+static int print_hexkey(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+	printf("key %d bytes\n", (int)key.dsize);
+	print_data((const char *)key.dptr, key.dsize);
+	printf("\n");
+	return 0;
+}
+
+static int total_bytes;
+
+static int traverse_fn(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf, void *state)
+{
+	total_bytes += dbuf.dsize;
+	return 0;
+}
+
+static void info_tdb(void)
+{
+	int count;
+	total_bytes = 0;
+	if ((count = tdb_traverse(tdb, traverse_fn, NULL)) == -1)
+		printf("Error = %s\n", tdb_errorstr(tdb));
+	else
+		printf("%d records totalling %d bytes\n", count, total_bytes);
+}
+
+static void speed_tdb(const char *tlimit)
+{
+	unsigned timelimit = tlimit?atoi(tlimit):0;
+	double t;
+	int ops=0;
+	if (timelimit == 0) timelimit = 10;
+	printf("Testing traverse speed for %u seconds\n", timelimit);
+	_start_timer();
+	while ((t=_end_timer()) < timelimit) {
+		tdb_traverse(tdb, traverse_fn, NULL);
+		printf("%10.3f ops/sec\r", (++ops)/t);
+	}
+	printf("\n");
+}
+
+static void toggle_mmap(void)
+{
+	disable_mmap = !disable_mmap;
+	if (disable_mmap) {
+		printf("mmap is disabled\n");
+	} else {
+		printf("mmap is enabled\n");
+	}
+}
+
+static char *tdb_getline(const char *prompt)
+{
+	static char thisline[1024];
+	char *p;
+	fputs(prompt, stdout);
+	thisline[0] = 0;
+	p = fgets(thisline, sizeof(thisline)-1, stdin);
+	if (p) p = strchr(p, '\n');
+	if (p) *p = 0;
+	return p?thisline:NULL;
+}
+
+static int do_delete_fn(TDB_CONTEXT *the_tdb, TDB_DATA key, TDB_DATA dbuf,
+                     void *state)
+{
+    return tdb_delete(the_tdb, key);
+}
+
+static void first_record(TDB_CONTEXT *the_tdb, TDB_DATA *pkey)
+{
+	TDB_DATA dbuf;
+	*pkey = tdb_firstkey(the_tdb);
+	
+	dbuf = tdb_fetch(the_tdb, *pkey);
+	if (!dbuf.dptr) terror("fetch failed");
+	else {
+		print_rec(the_tdb, *pkey, dbuf, NULL);
+	}
+}
+
+static void next_record(TDB_CONTEXT *the_tdb, TDB_DATA *pkey)
+{
+	TDB_DATA dbuf;
+	*pkey = tdb_nextkey(the_tdb, *pkey);
+	
+	dbuf = tdb_fetch(the_tdb, *pkey);
+	if (!dbuf.dptr) 
+		terror("fetch failed");
+	else
+		print_rec(the_tdb, *pkey, dbuf, NULL);
+}
+
+static int do_command(void)
+{
+	COMMAND_TABLE *ctp = cmd_table;
+	enum commands mycmd = CMD_HELP;
+	int cmd_len;
+
+	if (cmdname && strlen(cmdname) == 0) {
+	    mycmd = CMD_NEXT;
+	} else {
+	    while (ctp->name) {
+		cmd_len = strlen(ctp->name);
+		if (strncmp(ctp->name,cmdname,cmd_len) == 0) {
+			mycmd = ctp->cmd;
+			break;
+		}
+		ctp++;
+	    }
+	}
+
+	switch (mycmd) {
+	case CMD_CREATE_TDB:
+            bIterate = 0;
+            create_tdb(arg1);
+	    return 0;
+	case CMD_OPEN_TDB:
+            bIterate = 0;
+            open_tdb(arg1);
+            return 0;
+	case CMD_SYSTEM:
+	    /* Shell command */
+	    system(arg1);
+	    return 0;
+	case CMD_QUIT:
+	    return 1;
+	default:
+	    /* all the rest require a open database */
+	    if (!tdb) {
+		bIterate = 0;
+		terror("database not open");
+		help();
+		return 0;
+	    }
+	    switch (mycmd) {
+	    case CMD_ERASE:
+		bIterate = 0;
+		tdb_traverse(tdb, do_delete_fn, NULL);
+		return 0;
+	    case CMD_DUMP:
+		bIterate = 0;
+		tdb_traverse(tdb, print_rec, NULL);
+		return 0;
+	    case CMD_INSERT:
+		bIterate = 0;
+		insert_tdb(arg1, arg1len,arg2,arg2len);
+		return 0;
+	    case CMD_MOVE:
+		bIterate = 0;
+		move_rec(arg1,arg1len,arg2);
+		return 0;
+	    case CMD_STORE:
+		bIterate = 0;
+		store_tdb(arg1,arg1len,arg2,arg2len);
+		return 0;
+	    case CMD_SHOW:
+		bIterate = 0;
+		show_tdb(arg1, arg1len);
+		return 0;
+	    case CMD_KEYS:
+		tdb_traverse(tdb, print_key, NULL);
+		return 0;
+	    case CMD_HEXKEYS:
+		tdb_traverse(tdb, print_hexkey, NULL);
+		return 0;
+	    case CMD_DELETE:
+		bIterate = 0;
+		delete_tdb(arg1,arg1len);
+		return 0;
+	    case CMD_LIST_HASH_FREE:
+		tdb_dump_all(tdb);
+		return 0;
+	    case CMD_LIST_FREE:
+		tdb_printfreelist(tdb);
+		return 0;
+	    case CMD_INFO:
+		info_tdb();
+		return 0;
+	    case CMD_SPEED:
+		speed_tdb(arg1);
+		return 0;
+	    case CMD_MMAP:
+		toggle_mmap();
+		return 0;
+	    case CMD_FIRST:
+		bIterate = 1;
+		first_record(tdb, &iterate_kbuf);
+		return 0;
+	    case CMD_NEXT:
+	       if (bIterate)
+		  next_record(tdb, &iterate_kbuf);
+		return 0;
+	    case CMD_HELP:
+		help();
+		return 0;
+            case CMD_CREATE_TDB:
+            case CMD_OPEN_TDB:
+            case CMD_SYSTEM:
+            case CMD_QUIT:
+                /*
+                 * unhandled commands.  cases included here to avoid compiler
+                 * warnings.
+                 */
+                return 0;
+	    }
+	}
+
+	return 0;
+}
+
+static char *convert_string(char *instring, size_t *sizep)
+{
+    size_t length = 0;
+    char *outp, *inp;
+    char temp[3];
+    
+
+    outp = inp = instring;
+
+    while (*inp) {
+	if (*inp == '\\') {
+	    inp++;
+	    if (*inp && strchr("0123456789abcdefABCDEF",(int)*inp)) {
+		temp[0] = *inp++;
+		temp[1] = '\0';
+		if (*inp && strchr("0123456789abcdefABCDEF",(int)*inp)) {
+		    temp[1] = *inp++;
+		    temp[2] = '\0';
+		}
+		*outp++ = (char)strtol((const char *)temp,NULL,16);
+	    } else {
+		*outp++ = *inp++;
+	    }
+	} else {
+	    *outp++ = *inp++;
+	}
+	length++;
+    }
+    *sizep = length;
+    return instring;
+}
+
+int main(int argc, char *argv[])
+{
+    cmdname = "";
+    arg1 = NULL;
+    arg1len = 0;
+    arg2 = NULL;
+    arg2len = 0;
+
+    if (argv[1]) {
+	cmdname = "open";
+	arg1 = argv[1];
+        do_command();
+	cmdname =  "";
+	arg1 = NULL;
+    }
+
+    switch (argc) {
+	case 1:
+	case 2:
+	    /* Interactive mode */
+	    while ((cmdname = tdb_getline("tdb> "))) {
+		arg2 = arg1 = NULL;
+		if ((arg1 = strchr((const char *)cmdname,' ')) != NULL) {
+		    arg1++;
+		    arg2 = arg1;
+		    while (*arg2) {
+			if (*arg2 == ' ') {
+			    *arg2++ = '\0';
+			    break;
+			}
+			if ((*arg2++ == '\\') && (*arg2 == ' ')) {
+			    arg2++;
+			}
+		    }
+		}
+		if (arg1) arg1 = convert_string(arg1,&arg1len);
+		if (arg2) arg2 = convert_string(arg2,&arg2len);
+		if (do_command()) break;
+	    }
+	    break;
+	case 5:
+	    arg2 = convert_string(argv[4],&arg2len);
+	case 4:
+	    arg1 = convert_string(argv[3],&arg1len);
+	case 3:
+	    cmdname = argv[2];
+	default:
+	    do_command();
+	    break;
+    }
+
+    if (tdb) tdb_close(tdb);
+
+    return 0;
+}
diff --git a/lib/tdb/tools/tdbtorture.c b/lib/tdb/tools/tdbtorture.c
new file mode 100644
index 0000000000..9265cf07aa
--- /dev/null
+++ b/lib/tdb/tools/tdbtorture.c
@@ -0,0 +1,318 @@
+/* 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 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;
+
+#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;
+    
+	error_count++;
+
+	va_start(ap, format);
+	vfprintf(stdout, format, ap);
+	va_end(ap);
+	fflush(stdout);
+#if 0
+	{
+		char *ptr;
+		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 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 TRANSACTION_PROB
+	if (in_transaction == 0 && random() % TRANSACTION_PROB == 0) {
+		if (tdb_transaction_start(db) != 0) {
+			fatal("tdb_transaction_start failed");
+		}
+		in_transaction++;
+		goto next;
+	}
+	if (in_transaction && random() % TRANSACTION_PROB == 0) {
+		if (tdb_transaction_commit(db) != 0) {
+			fatal("tdb_transaction_commit failed");
+		}
+		in_transaction--;
+		goto next;
+	}
+	if (in_transaction && random() % TRANSACTION_PROB == 0) {
+		if (tdb_transaction_cancel(db) != 0) {
+			fatal("tdb_transaction_cancel failed");
+		}
+		in_transaction--;
+		goto next;
+	}
+#endif
+
+#if REOPEN_PROB
+	if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
+		tdb_reopen_all(0);
+		goto next;
+	} 
+#endif
+
+#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 [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
+	exit(0);
+}
+
+ int main(int argc, char * const *argv)
+{
+	int i, seed = -1;
+	int num_procs = 3;
+	int num_loops = 5000;
+	int hash_size = 2;
+	int c;
+	extern char *optarg;
+	pid_t *pids;
+
+	struct tdb_logging_context log_ctx;
+	log_ctx.log_fn = tdb_log;
+
+	while ((c = getopt(argc, argv, "n:l:s:H:h")) != -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;
+		default:
+			usage();
+		}
+	}
+
+	unlink("torture.tdb");
+
+	pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
+	pids[0] = getpid();
+
+	for (i=0;i<num_procs-1;i++) {
+		if ((pids[i+1]=fork()) == 0) break;
+	}
+
+	db = tdb_open_ex("torture.tdb", hash_size, TDB_CLEAR_IF_FIRST, 
+			 O_RDWR | O_CREAT, 0600, &log_ctx, NULL);
+	if (!db) {
+		fatal("db open failed");
+	}
+
+	if (seed == -1) {
+		seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
+	}
+
+	if (i == 0) {
+		printf("testing with %d processes, %d loops, %d hash_size, seed=%d\n", 
+		       num_procs, num_loops, hash_size, seed);
+	}
+
+	srand(seed + i);
+	srandom(seed + i);
+
+	for (i=0;i<num_loops && error_count == 0;i++) {
+		addrec_db();
+	}
+
+	if (error_count == 0) {
+		tdb_traverse_read(db, NULL, NULL);
+		tdb_traverse(db, traverse_fn, NULL);
+		tdb_traverse(db, traverse_fn, NULL);
+	}
+
+	tdb_close(db);
+
+	if (getpid() != pids[0]) {
+		return error_count;
+	}
+
+	for (i=1;i<num_procs;i++) {
+		int status, j;
+		pid_t pid;
+		if (error_count != 0) {
+			/* try and stop the test on any failure */
+			for (j=1;j<num_procs;j++) {
+				if (pids[j] != 0) {
+					kill(pids[j], SIGTERM);
+				}
+			}
+		}
+		pid = waitpid(-1, &status, 0);
+		if (pid == -1) {
+			perror("failed to wait for child\n");
+			exit(1);
+		}
+		for (j=1;j<num_procs;j++) {
+			if (pids[j] == pid) break;
+		}
+		if (j == num_procs) {
+			printf("unknown child %d exited!?\n", (int)pid);
+			exit(1);
+		}
+		if (WEXITSTATUS(status) != 0) {
+			printf("child %d exited with status %d\n",
+			       (int)pid, WEXITSTATUS(status));
+			error_count++;
+		}
+		pids[j] = 0;
+	}
+
+	if (error_count == 0) {
+		printf("OK\n");
+	}
+
+	return error_count;
+}