clues::item::AccessModeParameter Class Reference

The mode parameter in access(). More...

#include <fs.hxx>

Inheritance diagram for clues::item::AccessModeParameter:

Public Member Functions
std::string	str () const override
	Returns a human readable string representation of the item.
cosmos::fs::AccessChecks	checks () const
Public Member Functions inherited from clues::item::ValueInParameter
	ValueInParameter (const std::string_view short_name, const std::string_view long_name={})
Public Member Functions inherited from clues::item::ValueParameter
	ValueParameter (const ItemType type, const std::string_view short_name, const std::string_view long_name={})
Public Member Functions inherited from clues::SystemCallItem
	SystemCallItem (const ItemType type, const std::string_view short_name={}, const std::string_view long_name={})
	Constructs a new SystemCallItem.
auto	type () const
bool	isIn () const
bool	isOut () const
bool	isInOut () const
bool	isReturnValue () const
void	fill (const Tracee &proc, const Word word)
	Fills the item from the given register data.
bool	needsUpdate () const
	Returns whether the item needs to be updated after the system call is finished.
std::string_view	shortName () const
	Returns the friendly short name for this item.
std::string_view	longName () const
	Returns the friendly long name for this item, if available, else the short name.
auto	hasLongName () const
bool	isZero () const
	Returns whether the parameter is set to 0 / NULL.
Word	value () const
	Returns the currently stored raw value of the item.
template<typename OTHER>
OTHER	valueAs () const
	Helper to cast the strongly typed Word m_val to other strong enum types.
ForeignPtr	asPtr () const
Flags	flags () const
bool	deferFill () const

Protected Member Functions
void	processValue (const Tracee &) override
	Processes the value stored in m_val acc. to the actual item type.
Protected Member Functions inherited from clues::SystemCallItem
virtual void	updateData (const Tracee &t)
	Called upon exit of the system call to update possible out parameters.
void	setSystemCall (const SystemCall &sc)
	Sets the system call context this item is a part of.

Protected Attributes
cosmos::fs::AccessChecks	m_checks
Protected Attributes inherited from clues::SystemCallItem
const SystemCall *	m_call = nullptr
	The system call context this item part of.
const ItemType	m_type
	The type of item.
std::string_view	m_short_name
	A human readable short name for the item, should be one word only.
std::string_view	m_long_name
	A human readable longer name for the item.
Word	m_val
	The raw register value for the item.
Flags	m_flags
	Flags influencing the processing of the item.

Additional Inherited Members
Public Types inherited from clues::SystemCallItem
enum class	Flag { DEFER_FILL = 1 << 0 }
using	Flags = cosmos::BitMask<Flag>

Detailed Description

The mode parameter in access().

Definition at line 140 of file fs.hxx.

Constructor & Destructor Documentation

AccessModeParameter()

clues::item::AccessModeParameter::AccessModeParameter ( )

inlineexplicit

Definition at line 143 of file fs.hxx.

                                       :
                        item::ValueInParameter{"check", "access check"} {
        }

Member Function Documentation

checks()

cosmos::fs::AccessChecks clues::item::AccessModeParameter::checks ( ) const

inline

Definition at line 149 of file fs.hxx.

                                            {
                return m_checks;
        }

processValue()

void clues::item::AccessModeParameter::processValue ( const Tracee & )

overrideprotectedvirtual

Processes the value stored in m_val acc. to the actual item type.

This function is called for all parameter types upon entry to a system call, and for ItemType::RETVAL upon exit from a system call.

For parameters of ItemType::PARAM_OUT this callback can be used to reset any stored data to be filled in later when updateData() is called.

Reimplemented from clues::SystemCallItem.

Definition at line 137 of file fs.cxx.

                                                    {
        m_checks = cosmos::fs::AccessChecks(valueAs<int>());
}

str()

std::string clues::item::AccessModeParameter::str ( ) const

overridevirtual

Returns a human readable string representation of the item.

This member function should be specialized in derived classes to output the item's data in a fashion suitable for the concrete item type.

Reimplemented from clues::SystemCallItem.

Definition at line 141 of file fs.cxx.

                                         {
        using cosmos::fs::AccessCheck;
 
        std::stringstream ss;
 
        if (m_checks.none()) {
                ss << "F_OK";
        } else {
                if (m_checks[AccessCheck::READ_OK]) {
                        ss << "R_OK|";
                }
                if (m_checks[AccessCheck::WRITE_OK]) {
                        ss << "W_OK|";
                }
                if (m_checks[AccessCheck::EXEC_OK]) {
                        ss << "X_OK";
                }
        }
 
        auto ret = ss.str();
 
        if (ret.empty()) {
                return "???";
        }
 
        return strip_back(std::move(ret));
}

Member Data Documentation

m_checks

cosmos::fs::AccessChecks clues::item::AccessModeParameter::m_checks

protected

Definition at line 159 of file fs.hxx.

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The documentation for this class was generated from the following files:

• include/items/fs.hxx
• src/items/fs.cxx