diff options
Diffstat (limited to 'header')
| -rw-r--r-- | header/header.ha | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/header/header.ha b/header/header.ha new file mode 100644 index 0000000..9602071 --- /dev/null +++ b/header/header.ha @@ -0,0 +1,37 @@ +use fmt; +use io; + +use gpt; + +export fn header(vol: io::file, args: []str) void = { + const vol = match (gpt::from(vol)) { + case let g: *gpt::gpt => + yield g; + case gpt::nogpt => + fmt::fatalf("gpt.header: disk {} does not have valid gpt", args[0]); + case => + fmt::fatalf("gpt.header: could not access disk {}", args[0]); + }; + defer gpt::finish(vol); + + const header = vol.primary.header; + + fmt::printfln("revision: \t\t{}", header.revision)!; + fmt::printfln("header_size: \t\t{}", header.header_size)!; + fmt::printfln("header_crc32: \t\t{}", header.header_crc32)!; + fmt::printfln("header_lba: \t\t{}", header.header_lba)!; + fmt::printfln("backup_header_lba: \t{}", header.backup_header_lba)!; + fmt::printfln("first_lba: \t\t{}", header.first_lba)!; + fmt::printfln("last_lba: \t\t{}", header.last_lba)!; + fmt::printfln("disk_guid: \t\t[{},{}]", header.disk_guid[0], header.disk_guid[1])!; + fmt::printfln("entries_lba: \t\t{}", header.entries_lba)!; + fmt::printfln("entries_len: \t\t{}", header.entries_len)!; + fmt::printfln("entry_size: \t\t{}", header.entry_size)!; + fmt::printfln("entries_crc32: \t\t{}", header.entries_crc32)!; + + const primary_valid = gpt::header_crc32(header) == header.header_crc32 && gpt::entries_crc32(vol.primary.entries) == header.entries_crc32; + const backup_valid = 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: \t\t{}", primary_valid)!; + fmt::printfln("backup_sane: \t\t{}", backup_valid)!; +}; |