gptman: partition info

1 files changed, 36 insertions, 0 deletions

diff --git a/info/info.ha b/info/info.ha
new file mode 100644
index 0000000..7df9ee2
--- /dev/null
+++ b/info/info.ha
@@ -0,0 +1,36 @@
+use fmt;
+use io;
+
+use gpt;
+use volume;
+
+fn booltonum(a: bool) str = if (a) { return "1"; } else { return "0"; };
+
+export fn info(vol: str, args: []str) void = {
+	const name = vol;
+	const vol = volume::opengpt(vol);
+	defer gpt::finish(vol);
+
+	const header = vol.primary.header;
+
+	fmt::printfln("# GPT header info {}", name)!;
+	fmt::printfln("revision({})", header.revision)!;
+	fmt::printfln("header_size({})", header.header_size)!;
+	fmt::printfln("header_crc32({})", header.header_crc32)!;
+	fmt::printfln("header_lba({})", header.header_lba)!;
+	fmt::printfln("backup_header_lba({})", header.backup_header_lba)!;
+	fmt::printfln("first_lba({})", header.first_lba)!;
+	fmt::printfln("last_lba({})", header.last_lba)!;
+	// XXX Add a comment output for the GUID written in normal form
+	fmt::printfln("disk_guid([{},{}])", header.disk_guid[0], header.disk_guid[1])!;
+	fmt::printfln("entries_lba({})", header.entries_lba)!;
+	fmt::printfln("entries_len({})", header.entries_len)!;
+	fmt::printfln("entry_size({})", header.entry_size)!;
+	fmt::printfln("entries_crc32({})", header.entries_crc32)!;
+	
+	const primary_sane = gpt::header_crc32(header) == header.header_crc32 && gpt::entries_crc32(vol.primary.entries) == header.entries_crc32;
+	const backup_sane = gpt::header_crc32(vol.backup.header) == vol.backup.header.header_crc32 && gpt::entries_crc32(vol.backup.entries) == vol.backup.header.entries_crc32;
+
+	fmt::printfln("primary_sane({})", booltonum(primary_sane))!;
+	fmt::printfln("backup_sane({})", booltonum(backup_sane))!;
+};