[sql] Import SQLite 3.17.0.

third_party/sqlite/patches/0004-Modify-default-VFS-to-support-WebDatabase.patch

-From 0a5da8cd79a6b502edc01c40037ae418b2d5c828 Mon Sep 17 00:00:00 2001
-From: dumi <dumi@chromium.org>
-Date: Mon, 20 Jul 2009 23:40:51 +0000
-Subject: [PATCH 04/10] Modify default VFS to support WebDatabase.
-
-The renderer WebDatabase implementation needs to broker certain requests
-to the browser.  This modifies SQLite to allow monkey-patching the VFS
-to support this.
-
-NOTE(shess): This patch relies on core SQLite implementation details
-remaining unchanged.  When importing a new version of SQLite, pay very
-close attention to whether the change is still doing what is intended.
-
-Original review URLs:
-https://codereview.chromium.org/159044
-https://codereview.chromium.org/384075
-https://codereview.chromium.org/377039
-[Possibly not a complete list.]
----
- third_party/sqlite/src/src/os_unix.c   | 49 ++++++++++++++++++++++++++++++++++
- third_party/sqlite/src/src/os_win.c    |  8 ++++++
- third_party/sqlite/src/src/sqlite.h.in | 23 ++++++++++++++++
- 3 files changed, 80 insertions(+)
-
-diff --git a/third_party/sqlite/src/src/os_unix.c b/third_party/sqlite/src/src/os_unix.c
-index 791ba5d..fa85638 100644
---- a/third_party/sqlite/src/src/os_unix.c
-+++ b/third_party/sqlite/src/src/os_unix.c
-@@ -1297,6 +1297,12 @@ static int fileHasMoved(unixFile *pFile){
-   return pFile->pInode!=0 && pFile->pId!=pFile->pInode->fileId.pId;
- #else
-   struct stat buf;
-+
-+  /* TODO(shess): This check doesn't work when the Chromium's WebDB code is
-+  ** running in the sandbox.
-+  */
-+  return 0;
-+
-   return pFile->pInode!=0 &&
-       (osStat(pFile->zPath, &buf)!=0 || buf.st_ino!=pFile->pInode->fileId.ino);
- #endif
-@@ -5554,6 +5560,44 @@ static int findCreateFileMode(
- }
- 
- /*
-+** Initialize |unixFile| internals of |file| on behalf of chromiumOpen() in
-+** WebDatabase SQLiteFileSystemPosix.cpp.  Function is a subset of unixOpen(),
-+** each duplicated piece is marked by "Duplicated in" comment in unixOpen().
-+*/
-+CHROMIUM_SQLITE_API
-+int chromium_sqlite3_fill_in_unix_sqlite3_file(sqlite3_vfs* pVfs,
-+                                               int fd,
-+                                               sqlite3_file* pFile,
-+                                               const char* zPath,
-+                                               int noLock,
-+                                               int flags) {
-+  unixFile *p = (unixFile *)pFile;
-+  const int eType = flags&0xFFFFFF00;  /* Type of file to open */
-+  const int ctrlFlags = (noLock ? UNIXFILE_NOLOCK : 0);
-+  int rc;
-+
-+  memset(p, 0, sizeof(unixFile));
-+
-+  /* osStat() will not work in the sandbox, so findReusableFd() will always
-+  ** fail, so directly include the failure-case setup then initialize pUnused.
-+  */
-+  if( eType==SQLITE_OPEN_MAIN_DB ){
-+    p->pUnused = sqlite3_malloc(sizeof(*p->pUnused));
-+    if (!p->pUnused) {
-+      return SQLITE_NOMEM;
-+    }
-+    p->pUnused->fd = fd;
-+    p->pUnused->flags = flags;
-+  }
-+
-+  rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
-+  if( rc!=SQLITE_OK ){
-+    sqlite3_free(p->pUnused);
-+  }
-+  return rc;
-+}
-+
-+/*
- ** Open the file zPath.
- ** 
- ** Previously, the SQLite OS layer used three functions in place of this
-@@ -5654,6 +5698,7 @@ static int unixOpen(
-     sqlite3_randomness(0,0);
-   }
- 
-+  /* Duplicated in chromium_sqlite3_fill_in_unix_sqlite3_file(). */
-   memset(p, 0, sizeof(unixFile));
- 
-   if( eType==SQLITE_OPEN_MAIN_DB ){
-@@ -5662,6 +5707,7 @@ static int unixOpen(
-     if( pUnused ){
-       fd = pUnused->fd;
-     }else{
-+      /* Duplicated in chromium_sqlite3_fill_in_unix_sqlite3_file(). */
-       pUnused = sqlite3_malloc64(sizeof(*pUnused));
-       if( !pUnused ){
-         return SQLITE_NOMEM;
-@@ -5739,6 +5785,7 @@ static int unixOpen(
-   }
- 
-   if( p->pUnused ){
-+    /* Duplicated in chromium_sqlite3_fill_in_unix_sqlite3_file(). */
-     p->pUnused->fd = fd;
-     p->pUnused->flags = flags;
-   }
-@@ -5819,10 +5866,12 @@ static int unixOpen(
-   }
- #endif
-   
-+  /* Duplicated in chromium_sqlite3_fill_in_unix_sqlite3_file(). */
-   rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
- 
- open_finished:
-   if( rc!=SQLITE_OK ){
-+    /* Duplicated in chromium_sqlite3_fill_in_unix_sqlite3_file(). */
-     sqlite3_free(p->pUnused);
-   }
-   return rc;
-diff --git a/third_party/sqlite/src/src/os_win.c b/third_party/sqlite/src/src/os_win.c
-index c54bfd6..00ad6fd 100644
---- a/third_party/sqlite/src/src/os_win.c
-+++ b/third_party/sqlite/src/src/os_win.c
-@@ -5639,4 +5639,12 @@ int sqlite3_os_end(void){
-   return SQLITE_OK;
- }
- 
-+CHROMIUM_SQLITE_API
-+void chromium_sqlite3_initialize_win_sqlite3_file(sqlite3_file* file, HANDLE handle) {
-+  winFile* winSQLite3File = (winFile*)file;
-+  memset(file, 0, sizeof(*file));
-+  winSQLite3File->pMethod = &winIoMethod;
-+  winSQLite3File->h = handle;
-+}
-+
- #endif /* SQLITE_OS_WIN */
-diff --git a/third_party/sqlite/src/src/sqlite.h.in b/third_party/sqlite/src/src/sqlite.h.in
-index 59b30cd..e5673fd 100644
---- a/third_party/sqlite/src/src/sqlite.h.in
-+++ b/third_party/sqlite/src/src/sqlite.h.in
-@@ -7411,6 +7411,29 @@ int sqlite3_strnicmp(const char *, const char *, int);
- */
- int sqlite3_strglob(const char *zGlob, const char *zStr);
- 
-+/* Begin WebDatabase patch for Chromium */
-+/* Expose some SQLite internals for the WebDatabase vfs.
-+** DO NOT EXTEND THE USE OF THIS.
-+*/
-+#ifndef CHROMIUM_SQLITE_API
-+#define CHROMIUM_SQLITE_API SQLITE_API
-+#endif
-+#if defined(CHROMIUM_SQLITE_INTERNALS)
-+#ifdef _WIN32
-+CHROMIUM_SQLITE_API
-+void chromium_sqlite3_initialize_win_sqlite3_file(sqlite3_file* file, HANDLE handle);
-+#else  /* _WIN32 */
-+CHROMIUM_SQLITE_API
-+int chromium_sqlite3_fill_in_unix_sqlite3_file(sqlite3_vfs* pVfs,
-+                                               int fd,
-+                                               sqlite3_file* pFile,
-+                                               const char* zPath,
-+                                               int noLock,
-+                                               int flags);
-+#endif  /* _WIN32 */
-+#endif  /* CHROMIUM_SQLITE_INTERNALS */
-+/* End WebDatabase patch for Chromium */
-+
- /*
- ** CAPI3REF: String LIKE Matching
- *
--- 
-2.7.0
-