[sql] Import SQLite 3.17.0.

third_party/sqlite/patches/0010-Allow-read-only-memory-mapping.patch

-From 12b0ba774b11ae27c41ad20e62522c00567e2a0a Mon Sep 17 00:00:00 2001
-From: Scott Hess <shess@chromium.org>
-Date: Wed, 5 Aug 2015 16:44:32 -0700
-Subject: [PATCH 10/10] Allow read-only memory mapping.
-
-In memory-mapped I/O mode, SQLite writes pages by using memcpy() from
-the staging memory into the underlying memory-mapped file.  This allows
-anyone in the process to also write into that space.  Modify SQLite to
-map things read-only.
-
-TODO: Upstream.
-
-BUG=489784
----
- third_party/sqlite/src/src/os_unix.c | 2 +-
- third_party/sqlite/src/src/os_win.c  | 2 +-
- 2 files changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/third_party/sqlite/src/src/os_unix.c b/third_party/sqlite/src/src/os_unix.c
-index fa85638..523cad6 100644
---- a/third_party/sqlite/src/src/os_unix.c
-+++ b/third_party/sqlite/src/src/os_unix.c
-@@ -3141,7 +3141,7 @@ static int unixRead(
-   );
- #endif
- 
--#if SQLITE_MAX_MMAP_SIZE>0
-+#if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0
-   /* Deal with as much of this read request as possible by transfering
-   ** data from the memory mapping using memcpy().  */
-   if( offset<pFile->mmapSize ){
-diff --git a/third_party/sqlite/src/src/os_win.c b/third_party/sqlite/src/src/os_win.c
-index 00ad6fd..8a68828 100644
---- a/third_party/sqlite/src/src/os_win.c
-+++ b/third_party/sqlite/src/src/os_win.c
-@@ -2524,7 +2524,7 @@ static int winRead(
-            "offset=%lld, lock=%d\n", osGetCurrentProcessId(), pFile,
-            pFile->h, pBuf, amt, offset, pFile->locktype));
- 
--#if SQLITE_MAX_MMAP_SIZE>0
-+#if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0
-   /* Deal with as much of this read request as possible by transfering
-   ** data from the memory mapping using memcpy().  */
-   if( offset<pFile->mmapSize ){
--- 
-2.7.0
-