| # SQLite VFS |
| |
| This component provides a sandboxed SQLite Virtual File System (VFS). It is |
| used by `components/persistent_cache` to provide a sandboxed SQLite database |
| access. |
| |
| ## Usage |
| |
| A trusted process (that can access the filesystem) can create a `PendingFileSet` |
| object. This `PendingFileSet` object is then used by clients to connect to a |
| database in a sandboxed process. |
| |
| `persistent_cache::PersistentCache` is one such client that utilizes a |
| `PendingFileSet`. Specifically, `persistent_cache::SqliteBackendImpl` (located |
| in `components/persistent_cache/sqlite/sqlite_backend_impl.cc`) takes a |
| `PendingFileSet`, registers the `SqliteVfsFileSet` with |
| `SqliteSandboxedVfsDelegate::RegisterSandboxedFiles()`, and then opens the |
| database using `sql::Database` with the virtual file path returned by |
| `SqliteVfsFileSet::GetDbVirtualFilePath()`, allowing access from a sandboxed |
| process. |
