First step to ccanizing TDB.

ccan/tdb/_info

+#include <string.h>
+
+/**
+ * tdb - The trivial (transactional) database
+ *
+ * The tdb module provides an efficient keyword data mapping (usually
+ * within a file).  It supports transactions, so the contents of the
+ * database is reliable even across crashes.
+ *
+ * Example:
+ *	#include <ccan/tdb/tdb.h>
+ *	#include <ccan/str/str.h>
+ *	#include <err.h>
+ *	#include <stdio.h>
+ *	
+ *	static void usage(void)
+ *	{
+ *		errx(1, "Usage: %s fetch <dbfile> <key>\n"
+ *		     "OR %s store <dbfile> <key> <data>");
+ *	}
+ *	
+ *	int main(int argc, char *argv[])
+ *	{
+ *		struct tdb_context *tdb;
+ *		TDB_DATA key, value;
+ *	
+ *		if (argc < 4)
+ *			usage();
+ *	
+ *		tdb = tdb_open(argv[2], 1024, TDB_DEFAULT, O_CREAT|O_RDWR,
+ *				0600);
+ *		if (!tdb)
+ *			err(1, "Opening %s", argv[2]);
+ *	
+ *		key.dptr = (void *)argv[3];
+ *		key.dsize = strlen(argv[3]);
+ *	
+ *		if (streq(argv[1], "fetch")) {
+ *			if (argc != 4)
+ *				usage();
+ *			value = tdb_fetch(tdb, key);
+ *			if (!value.dptr)
+ *				errx(1, "fetch %s: %s",
+ *				     argv[3], tdb_errorstr(tdb));
+ *			printf("%.*s\n", value.dsize, (char *)value.dptr);
+ *			free(value.dptr);
+ *		} else if (streq(argv[1], "store")) {
+ *			if (argc != 5)
+ *				usage();
+ *			value.dptr = (void *)argv[4];
+ *			value.dsize = strlen(argv[4]);
+ *			if (tdb_store(tdb, key, value, 0) != 0)
+ *				errx(1, "store %s: %s",
+ *				     argv[3], tdb_errorstr(tdb));
+ *		} else
+ *			usage();
+ *	
+ *		return 0;
+ *	}
+ *
+ * Maintainer: Rusty Russell <rusty@rustcorp.com.au>
+ *
+ * Author: Andrew Tridgell, Jeremy Allison, Rusty Russell
+ *
+ * Licence: LGPLv3 (or later)
+ */
+int main(int argc, char *argv[])
+{
+	if (argc != 2)
+		return 1;
+
+	if (strcmp(argv[1], "depends") == 0)
+		return 0;
+
+	return 1;
+}

ccan/tdb/io.c

@@ -25,8 +25,10 @@
    License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */
 
-
 #include "tdb_private.h"
+#ifndef MAX
+#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
 
 /* check for an out of bounds access - if it is out of bounds then
    see if the database has been expanded by someone else and expand

ccan/tdb/tdb.h

@@ -30,6 +30,12 @@
 extern "C" {
 #endif
 
+#ifndef _SAMBA_BUILD_
+/* For mode_t */
+#include <sys/types.h>
+/* For sig_atomic_t. */
+#include <signal.h>
+#endif
 
 /* flags to tdb_store() */
 #define TDB_REPLACE 1		/* Unused */

ccan/tdb/tdb_private.h

@@ -23,12 +23,26 @@
    License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */
 
+#ifdef _SAMBA_BUILD_
 #include "replace.h"
 #include "system/filesys.h"
 #include "system/time.h"
 #include "system/shmem.h"
 #include "system/select.h"
 #include "system/wait.h"
+#else
+#define _XOPEN_SOURCE 500
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#endif
 #include "tdb.h"
 
 #ifndef HAVE_GETPAGESIZE