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Kernel: Change Ext2FS to be backed by a file instead of a block device

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This ensures that we can mount image files as virtual disks without the
need of implementing gross hacks like loopback devices :)
This commit is contained in:
Liav A 2020-03-26 02:51:06 +02:00 • committed by Andreas Kling
parent 2f2016f51d
commit 6b59311d4b
10 changed files with 116 additions and 90 deletions
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8
Kernel/FileSystem/ProcFS.cpp
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@ -35,7 +35,7 @@
#include <Kernel/Arch/i386/CPU.h>
#include <Kernel/Devices/BlockDevice.h>
#include <Kernel/FileSystem/Custody.h>
#include <Kernel/FileSystem/DiskBackedFileSystem.h>
#include <Kernel/FileSystem/FileBackedFileSystem.h>
#include <Kernel/FileSystem/FileDescription.h>
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/Heap/kmalloc.h>
@ -746,10 +746,10 @@ Optional<KBuffer> procfs$df(InodeIdentifier)
fs_object.add("readonly", fs.is_readonly());
fs_object.add("mount_flags", mount.flags());
if (fs.is_disk_backed())
fs_object.add("device", static_cast<const DiskBackedFS&>(fs).device().absolute_path());
if (fs.is_file_backed())
fs_object.add("source", static_cast<const FileBackedFS&>(fs).file_description().absolute_path());
else
fs_object.add("device", fs.class_name());
fs_object.add("source", fs.class_name());
});
array.finish();
return builder.build();