Merge tag 'upstream/2.2.1'

Upstream version 2.2.1
# gpg: Signature made Tue 13 Aug 2013 03:42:56 PM EDT using RSA key ID 374BBE81
# gpg: Good signature from "Hans-Christoph Steiner <hans@at.or.at>"
# gpg:                 aka "[jpeg image of size 5408]"
# gpg:                 aka "Hans-Christoph Steiner <hs420@nyu.edu>"
# gpg:                 aka "Hans-Christoph Steiner <hans@eds.org>"
# gpg:                 aka "Hans-Christoph Steiner <hans@guardianproject.info>"
# gpg:                 aka "Hans-Christoph Steiner <hansi@nyu.edu>"
# gpg:                 aka "Hans-Christoph Steiner <hans@guardianproject.info>"

1 files changed, 20 insertions, 0 deletions

diff --git a/src/os.c b/src/os.c
index b5e918a..be2ea4c 100644
--- a/src/os.c
+++ b/src/os.c
@@ -141,6 +141,26 @@ int sqlite3OsShmMap(
   return id->pMethods->xShmMap(id, iPage, pgsz, bExtend, pp);
 }
 
+#if SQLITE_MAX_MMAP_SIZE>0
+/* The real implementation of xFetch and xUnfetch */
+int sqlite3OsFetch(sqlite3_file *id, i64 iOff, int iAmt, void **pp){
+  DO_OS_MALLOC_TEST(id);
+  return id->pMethods->xFetch(id, iOff, iAmt, pp);
+}
+int sqlite3OsUnfetch(sqlite3_file *id, i64 iOff, void *p){
+  return id->pMethods->xUnfetch(id, iOff, p);
+}
+#else
+/* No-op stubs to use when memory-mapped I/O is disabled */
+int sqlite3OsFetch(sqlite3_file *id, i64 iOff, int iAmt, void **pp){
+  *pp = 0;
+  return SQLITE_OK;
+}
+int sqlite3OsUnfetch(sqlite3_file *id, i64 iOff, void *p){
+  return SQLITE_OK;
+}
+#endif
+
 /*
 ** The next group of routines are convenience wrappers around the
 ** VFS methods.