Partition Table: Add support for Extended partitions

Now also MBR configurations with extended partitions are supported.
Author: https://github.com/supercomputer7 Commit: 81544dc5b4 Pull-request: https://github.com/SerenityOS/serenity/pull/1160 Reviewed-by: https://github.com/awesomekling
2025-08-09 17:49:40 +00:00 · 2020-02-01 23:28:39 +02:00 · 2020-02-01 23:28:39 +02:00 · 81544dc5b4 · 2024-07-19 09:43:08 +09:00
commit 81544dc5b4
parent 8cde707931
6 changed files with 302 additions and 10 deletions
--- a/Kernel/Devices/MBRPartitionTable.cpp
+++ b/Kernel/Devices/MBRPartitionTable.cpp
@ -63,6 +63,15 @@ bool MBRPartitionTable::initialize()
    return true;
 }

+bool MBRPartitionTable::contains_ebr() const
+{
+    for (int i = 0; i < 4; i++) {
+        if (header().entry[i].type == EBR_CHS_CONTAINER || header().entry[i].type == EBR_LBA_CONTAINER)
+            return true;
+    }
+    return false;
+}
+
 bool MBRPartitionTable::is_protective_mbr() const
 {
    return header().entry[0].type == MBR_PROTECTIVE;