Add permissions(), map_file_pages(), and unmap_file_pages() to llvm::sys::fs and add unit test. Unix is implemented. Windows side needs to be implemented.
llvm-svn: 158770
diff --git a/llvm/lib/Support/Windows/PathV2.inc b/llvm/lib/Support/Windows/PathV2.inc
index 4868b18..c79d8ab 100644
--- a/llvm/lib/Support/Windows/PathV2.inc
+++ b/llvm/lib/Support/Windows/PathV2.inc
@@ -497,6 +497,41 @@
return error_code::success();
}
+
+// Modifies permissions on a file.
+error_code permissions(const Twine &path, perms prms) {
+#if 0 // verify code below before enabling:
+ // If the permissions bits are not trying to modify
+ // "write" permissions, there is nothing to do.
+ if (!(prms & (owner_write|group_write|others_write)))
+ return error_code::success();
+
+ SmallString<128> path_storage;
+ SmallVector<wchar_t, 128> path_utf16;
+
+ if (error_code ec = UTF8ToUTF16(path.toStringRef(path_storage),
+ path_utf16))
+ return ec;
+
+ DWORD attributes = ::GetFileAttributesW(path_utf16.begin());
+
+ if (prms & add_perms) {
+ attributes &= ~FILE_ATTRIBUTE_READONLY;
+ }
+ else if (prms & remove_perms) {
+ attributes |= FILE_ATTRIBUTE_READONLY;
+ }
+ else {
+ assert(0 && "neither add_perms or remove_perms is set");
+ }
+
+ if ( ! ::SetFileAttributesW(path_utf16.begin(), attributes))
+ return windows_error(::GetLastError());
+#endif
+ return error_code::success();
+}
+
+
// FIXME: mode should be used here and default to user r/w only,
// it currently comes in as a UNIX mode.
error_code unique_file(const Twine &model, int &result_fd,
@@ -755,6 +790,17 @@
return error_code::success();
}
+error_code map_file_pages(const Twine &path, off_t file_offset, size_t size,
+ bool map_writable, void *&result) {
+ assert(0 && "NOT IMPLEMENTED");
+}
+
+error_code unmap_file_pages(void *base, size_t size) {
+ assert(0 && "NOT IMPLEMENTED");
+}
+
+
+
} // end namespace fs
} // end namespace sys
} // end namespace llvm