3 files changed, 19 insertions, 3 deletions
diff --git a/source4/lib/tdb/common/io.c b/source4/lib/tdb/common/io.c
index 3b7e712cfe..c963e66ad4 100644
--- a/source4/lib/tdb/common/io.c
+++ b/source4/lib/tdb/common/io.c
@@ -94,7 +94,7 @@ static int tdb_write(struct tdb_context *tdb, tdb_off_t off,
 			/* try once more */
 			TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_write: wrote only "
 				 "%d of %d bytes at %d, trying once more\n",
-				 written, len, off));
+				 (int)written, len, off));
 			errno = ENOSPC;
 			written = pwrite(tdb->fd, (void *)((char *)buf+written),
 					 len-written,
@@ -274,11 +274,13 @@ static int tdb_expand_file(struct tdb_context *tdb, tdb_off_t size, tdb_off_t ad
 			return -1;
 		} else if (written == -1) {
 			TDB_LOG((tdb, TDB_DEBUG_FATAL, "expand_file write of "
-				"%d bytes failed (%s)\n", n, strerror(errno)));
+				 "%d bytes failed (%s)\n", (int)n,
+				 strerror(errno)));
 			return -1;
 		} else if (written != n) {
 			TDB_LOG((tdb, TDB_DEBUG_WARNING, "expand_file: wrote "
-				"only %d of %d bytes - retrying\n", written,n));
+				 "only %d of %d bytes - retrying\n", (int)written,
+				 (int)n));
 		}
 		addition -= written;
 		size += written;
diff --git a/source4/lib/tdb/common/lock.c b/source4/lib/tdb/common/lock.c
index c0cb9c8766..e3fe888c46 100644
--- a/source4/lib/tdb/common/lock.c
+++ b/source4/lib/tdb/common/lock.c
@@ -29,6 +29,11 @@
 
 #define TDB_MARK_LOCK 0x80000000
 
+void tdb_setalarm_sigptr(struct tdb_context *tdb, volatile sig_atomic_t *ptr)
+{
+	tdb->interrupt_sig_ptr = ptr;
+}
+
 /* a byte range locking function - return 0 on success
    this functions locks/unlocks 1 byte at the specified offset.
 
@@ -60,6 +65,13 @@ int tdb_brlock(struct tdb_context *tdb, tdb_off_t offset,
 
 	do {
 		ret = fcntl(tdb->fd,lck_type,&fl);
+
+		/* Check for a sigalarm break. */
+		if (ret == -1 && errno == EINTR &&
+				tdb->interrupt_sig_ptr &&
+				*tdb->interrupt_sig_ptr) {
+			break;
+		}
 	} while (ret == -1 && errno == EINTR);
 
 	if (ret == -1) {
diff --git a/source4/lib/tdb/common/tdb_private.h b/source4/lib/tdb/common/tdb_private.h
index 99fa4434c0..00bd0eb537 100644
--- a/source4/lib/tdb/common/tdb_private.h
+++ b/source4/lib/tdb/common/tdb_private.h
@@ -28,6 +28,7 @@
 #include "system/time.h"
 #include "system/shmem.h"
 #include "system/select.h"
+#include "system/wait.h"
 #include "tdb.h"
 
 #ifndef HAVE_GETPAGESIZE
@@ -162,6 +163,7 @@ struct tdb_context {
 	int page_size;
 	int max_dead_records;
 	bool have_transaction_lock;
+	volatile sig_atomic_t *interrupt_sig_ptr;
 };