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Kernel: Pledge promises accessible via /proc/PID/pledge

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Ralf Donau 2021-07-07 22:31:40 +02:00 • committed by Andreas Kling
parent 35a2ba8ed8
commit 6113fe4747
2 changed files with 38 additions and 0 deletions
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1
Kernel/ProcessExposed.h
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@ -142,6 +142,7 @@ class ProcFSProcessFolder final
friend class ProcFSComponentsRegistrar; friend class ProcFSComponentsRegistrar;
friend class ProcFSRootFolder; friend class ProcFSRootFolder;
friend class ProcFSProcessInformation; friend class ProcFSProcessInformation;
friend class ProcFSProcessPledge;
friend class ProcFSProcessUnveil; friend class ProcFSProcessUnveil;
friend class ProcFSProcessPerformanceEvents; friend class ProcFSProcessPerformanceEvents;
friend class ProcFSProcessFileDescription; friend class ProcFSProcessFileDescription;

37
Kernel/ProcessSpecificExposed.cpp
View file

@ -242,6 +242,42 @@ RefPtr<ProcFSExposedComponent> ProcFSProcessFileDescriptions::lookup(StringView
return procfd_fd; return procfd_fd;
} }
class ProcFSProcessPledge final : public ProcFSProcessInformation {
public:
static NonnullRefPtr<ProcFSProcessPledge> create(const ProcFSProcessFolder& parent_folder)
{
return adopt_ref(*new (nothrow) ProcFSProcessPledge(parent_folder));
}
private:
explicit ProcFSProcessPledge(const ProcFSProcessFolder& parent_folder)
: ProcFSProcessInformation("pledge"sv, parent_folder)
{
}
virtual bool output(KBufferBuilder& builder) override
{
auto parent_folder = m_parent_folder.strong_ref();
if (parent_folder.is_null())
return false;
auto process = parent_folder->m_associated_process;
JsonObjectSerializer obj { builder };
#define __ENUMERATE_PLEDGE_PROMISE(x) \
if (process->has_promised(Pledge::x)) { \
if (!builder.is_empty()) \
builder.append(' '); \
builder.append(#x); \
}
if (process->has_promises()) {
StringBuilder builder;
ENUMERATE_PLEDGE_PROMISES
obj.add("promises", builder.build());
}
#undef __ENUMERATE_PLEDGE_PROMISE
obj.finish();
return true;
}
};
class ProcFSProcessUnveil final : public ProcFSProcessInformation { class ProcFSProcessUnveil final : public ProcFSProcessInformation {
public: public:
static NonnullRefPtr<ProcFSProcessUnveil> create(const ProcFSProcessFolder& parent_folder) static NonnullRefPtr<ProcFSProcessUnveil> create(const ProcFSProcessFolder& parent_folder)
@ -512,6 +548,7 @@ private:
void ProcFSProcessFolder::on_attach() void ProcFSProcessFolder::on_attach()
{ {
VERIFY(m_components.size() == 0); VERIFY(m_components.size() == 0);
m_components.append(ProcFSProcessPledge::create(*this));
m_components.append(ProcFSProcessUnveil::create(*this)); m_components.append(ProcFSProcessUnveil::create(*this));
m_components.append(ProcFSProcessPerformanceEvents::create(*this)); m_components.append(ProcFSProcessPerformanceEvents::create(*this));
m_components.append(ProcFSProcessFileDescriptions::create(*this)); m_components.append(ProcFSProcessFileDescriptions::create(*this));