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Kernel/SysFS: Make it possible to have custom permissions for nodes

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Liav A 2021-09-11 12:03:44 +03:00 • committed by Andreas Kling
parent 33f033066c
commit 06e95d0fd7
3 changed files with 7 additions and 1 deletions
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2
Kernel/FileSystem/SysFS.cpp
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@ -140,7 +140,7 @@ InodeMetadata SysFSInode::metadata() const
// NOTE: No locking required as m_associated_component or its component index will never change during our lifetime. // NOTE: No locking required as m_associated_component or its component index will never change during our lifetime.
InodeMetadata metadata; InodeMetadata metadata;
metadata.inode = { fsid(), m_associated_component->component_index() }; metadata.inode = { fsid(), m_associated_component->component_index() };
metadata.mode = S_IFREG | S_IRUSR | S_IRGRP | S_IROTH; metadata.mode = S_IFREG | m_associated_component->permissions();
metadata.uid = 0; metadata.uid = 0;
metadata.gid = 0; metadata.gid = 0;
metadata.size = 0; metadata.size = 0;

5
Kernel/FileSystem/SysFSComponent.cpp
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@ -26,6 +26,11 @@ SysFSComponent::SysFSComponent(StringView name)
{ {
} }
mode_t SysFSComponent::permissions() const
{
return S_IRUSR | S_IRGRP | S_IROTH;
}
KResult SysFSDirectory::traverse_as_directory(unsigned fsid, Function<bool(FileSystem::DirectoryEntryView const&)> callback) const KResult SysFSDirectory::traverse_as_directory(unsigned fsid, Function<bool(FileSystem::DirectoryEntryView const&)> callback) const
{ {
MutexLocker locker(SysFSComponentRegistry::the().get_lock()); MutexLocker locker(SysFSComponentRegistry::the().get_lock());

1
Kernel/FileSystem/SysFSComponent.h
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@ -29,6 +29,7 @@ public:
virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const { VERIFY_NOT_REACHED(); } virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const { VERIFY_NOT_REACHED(); }
virtual KResult traverse_as_directory(unsigned, Function<bool(FileSystem::DirectoryEntryView const&)>) const { VERIFY_NOT_REACHED(); } virtual KResult traverse_as_directory(unsigned, Function<bool(FileSystem::DirectoryEntryView const&)>) const { VERIFY_NOT_REACHED(); }
virtual RefPtr<SysFSComponent> lookup(StringView) { VERIFY_NOT_REACHED(); }; virtual RefPtr<SysFSComponent> lookup(StringView) { VERIFY_NOT_REACHED(); };
virtual mode_t permissions() const;
virtual KResultOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) { return EROFS; } virtual KResultOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) { return EROFS; }
virtual KResult refresh_data(OpenFileDescription&) const { return KSuccess; } virtual KResult refresh_data(OpenFileDescription&) const { return KSuccess; }