liblp: Export WriteToImageFile given a file descriptor.
This exports an internal variant of WriteToImageFile, since lpadd needs
to call it on an open descriptor. While we're here, switch "int" to
"borrowed_fd".
Bug: 144468779
Test: m lpadd
Change-Id: I2dd35b8a872f8a72a704230d0382398b8982cb0b
diff --git a/fs_mgr/liblp/images.cpp b/fs_mgr/liblp/images.cpp
index 6b842b3..e4d92ca 100644
--- a/fs_mgr/liblp/images.cpp
+++ b/fs_mgr/liblp/images.cpp
@@ -110,7 +110,7 @@
return ReadFromImageFile(fd);
}
-bool WriteToImageFile(int fd, const LpMetadata& input) {
+bool WriteToImageFile(borrowed_fd fd, const LpMetadata& input) {
std::string geometry = SerializeGeometry(input.geometry);
std::string metadata = SerializeMetadata(input);
diff --git a/fs_mgr/liblp/images.h b/fs_mgr/liblp/images.h
index a284d2e..88e5882 100644
--- a/fs_mgr/liblp/images.h
+++ b/fs_mgr/liblp/images.h
@@ -29,8 +29,6 @@
// Helper function to serialize geometry and metadata to a normal file, for
// flashing or debugging.
std::unique_ptr<LpMetadata> ReadFromImageFile(int fd);
-bool WriteToImageFile(const char* file, const LpMetadata& metadata);
-bool WriteToImageFile(int fd, const LpMetadata& metadata);
// We use an object to build the image file since it requires that data
// pointers be held alive until the sparse file is destroyed. It's easier
diff --git a/fs_mgr/liblp/include/liblp/liblp.h b/fs_mgr/liblp/include/liblp/liblp.h
index cd860cd..04f8987 100644
--- a/fs_mgr/liblp/include/liblp/liblp.h
+++ b/fs_mgr/liblp/include/liblp/liblp.h
@@ -76,12 +76,15 @@
// supported). It is a format specifically for storing only metadata.
bool IsEmptySuperImage(const std::string& file);
-// Read/Write logical partition metadata to an image file, for diagnostics or
-// flashing. If no partition images are specified, the file will be in the
-// empty format.
+// Read/Write logical partition metadata and contents to an image file, for
+// flashing.
bool WriteToImageFile(const std::string& file, const LpMetadata& metadata, uint32_t block_size,
const std::map<std::string, std::string>& images, bool sparsify);
+
+// Read/Write logical partition metadata to an image file, for producing a
+// super_empty.img (for fastboot wipe-super/update-super) or for diagnostics.
bool WriteToImageFile(const std::string& file, const LpMetadata& metadata);
+bool WriteToImageFile(android::base::borrowed_fd fd, const LpMetadata& metadata);
std::unique_ptr<LpMetadata> ReadFromImageFile(const std::string& image_file);
std::unique_ptr<LpMetadata> ReadFromImageBlob(const void* data, size_t bytes);