X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Ftdb2%2Fio.c;h=31756de341d8fd43d17a41d57c41284cbb650227;hb=ba7740e689b5791d79b95d2c5345870f9c29fb71;hp=bb3d2192829dc504a885e06176f6a2e275c2bcd8;hpb=f2a1247955c1b376469a5e37c9583a1bbfd4dc61;p=ccan

diff --git a/ccan/tdb2/io.c b/ccan/tdb2/io.c
index bb3d2192..31756de3 100644
--- a/ccan/tdb2/io.c
+++ b/ccan/tdb2/io.c
@@ -48,8 +48,13 @@ void tdb_mmap(struct tdb_context *tdb)
 	if (tdb->flags & TDB_NOMMAP)
 		return;
 
-	tdb->file->map_ptr = mmap(NULL, tdb->file->map_size, tdb->mmap_flags,
-				  MAP_SHARED, tdb->file->fd, 0);
+	/* size_t can be smaller than off_t. */
+	if ((size_t)tdb->file->map_size == tdb->file->map_size) {
+		tdb->file->map_ptr = mmap(NULL, tdb->file->map_size,
+					  tdb->mmap_flags,
+					  MAP_SHARED, tdb->file->fd, 0);
+	} else
+		tdb->file->map_ptr = MAP_FAILED;
 
 	/*
 	 * NB. When mmap fails it returns MAP_FAILED *NOT* NULL !!!!
@@ -592,12 +597,6 @@ void tdb_inc_seqnum(struct tdb_context *tdb)
 	}
 }
 
-void add_stat_(struct tdb_context *tdb, uint64_t *s, size_t val)
-{
-	if ((uintptr_t)s < (uintptr_t)tdb->stats + tdb->stats->size)
-		*s += val;
-}
-
 static const struct tdb_methods io_methods = {
 	tdb_read,
 	tdb_write,