AU: Update Downloader to support our image formats.
The downloader used to be dumb in the sense that it would pipe output
to either a DirectFileWriter or a DirectFileWriter via a
GzipDecompressingFileWriter, depending on if we were downloading an
update that was compressed or not. Sadly, things have gotten more
complex: we need to download to two partitions (kernel + rootfs), and
we may stream data via a DeltaPerformer (a type of FileWriter) to the
disk. Thus, the Downloader streams to either
1. gzip decompress->split_writer->direct to disk OR
2. delta performer
Other misc changes: Change FilesystemCopierAction to support
optionally copying the kernel partition rather than root partition.
InstallPlan struct: add an entry for destiation kernel partition.
Test Utils: a new ScopedTempFile class
Utils: support for getting the booted kernel partition device.
BUG=None
TEST=attached unittests
Review URL: http://codereview.chromium.org/1694025
diff --git a/filesystem_copier_action.cc b/filesystem_copier_action.cc
index 18bab44..bd44867 100755
--- a/filesystem_copier_action.cc
+++ b/filesystem_copier_action.cc
@@ -47,17 +47,23 @@
return;
}
- const string source =
- copy_source_.empty() ? utils::BootDevice() : copy_source_;
- LOG(INFO) << "Copying from " << source << " to "
- << install_plan_.install_path;
+ string source = copy_source_;
+ if (source.empty()) {
+ source = copying_kernel_install_path_ ?
+ utils::BootKernelDevice(utils::BootDevice()) :
+ utils::BootDevice();
+ }
+
+ const string destination = copying_kernel_install_path_ ?
+ install_plan_.kernel_install_path :
+ install_plan_.install_path;
int src_fd = open(source.c_str(), O_RDONLY);
if (src_fd < 0) {
PLOG(ERROR) << "Unable to open " << source << " for reading:";
return;
}
- int dst_fd = open(install_plan_.install_path.c_str(),
+ int dst_fd = open(destination.c_str(),
O_WRONLY | O_TRUNC | O_CREAT,
0644);
if (dst_fd < 0) {