libclues
Linux C++ Tracing Library
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clues::GetDentsSystemCall Struct Reference
+ Inheritance diagram for clues::GetDentsSystemCall:

Public Member Functions

 GetDentsSystemCall (const SystemCallNr nr)
 
- Public Member Functions inherited from clues::SystemCall
 SystemCall (const SystemCallNr nr)
 Instantiates a new SystemCall object with given properties.
 
 SystemCall (const SystemCall &other)=delete
 
SystemCalloperator= (const SystemCall &other)=delete
 
void setEntryInfo (const Tracee &proc, const SystemCallInfo &info)
 Update the stored parameter values from the given tracee.
 
void setExitInfo (const Tracee &proc, const SystemCallInfo &info)
 Update possible out and return parameter values from the given tracee.
 
std::string_view name () const
 Returns the system call's human readable name.
 
size_t numPars () const
 Returns the number of parameters for this system call.
 
SystemCallNr callNr () const
 Returns the system call table number for this system call.
 
const ParameterVectorparameters () const
 Access to the parameters associated with this system call.
 
SystemCallItemPtr result () const
 Access to the return value parameter associated with this system call.
 
std::optional< ErrnoResulterror () const
 Access to the errno result seen for this system call.
 
bool hasOutParameter () const
 
bool hasResultValue () const
 
bool hasErrorCode () const
 
ABI abi () const
 Returns the system call ABi seen during system call entry.
 
bool is32BitEmulationABI () const
 
const SystemCallInfocurrentInfo () const
 Access the current SystemCallInfo if currently processing syscall entry/exit.
 

Public Attributes

item::FileDescriptor fd
 directory FD.
 
item::DirEntries dirent
 struct linux_dirent*.
 
item::UintValue size
 size of dirent buffer provided by tracee.
 
item::SizeValue ret_bytes
 number of bytes filled in dirent buffer.
 

Additional Inherited Members

- Public Types inherited from clues::SystemCall
using ParameterVector = std::vector<SystemCallItemPtr>
 Vector of the parameters required for a system call.
 
- Static Public Member Functions inherited from clues::SystemCall
static const char * name (const SystemCallNr nr)
 Returns the name of the given system call or "<unknown>" if unknown.
 
static bool validNr (const SystemCallNr nr)
 Returns whether the given system call number is in a valid range.
 
- Protected Member Functions inherited from clues::SystemCall
void fillParameters (const Tracee &proc, const SystemCallInfo &info)
 
void setReturnItem (SystemCallItem &ret)
 Sets the return value system call item.
 
void addParameters ()
 
template<typename T, typename... Targs>
void addParameters (T &par, Targs &...rest)
 
template<typename... Targs>
void setParameters (Targs &...args)
 
virtual bool check2ndPass (const Tracee &)
 Check whether a second pass needs to be made processing parameters.
 
virtual void prepareNewSystemCall ()
 Perform any necessary actions before processing a new system call entry event.
 
virtual void updateFDTracking (const Tracee &proc)
 Update file descriptor tracking.
 
void dropFD (const Tracee &proc, const cosmos::FileNum num)
 
void trackFD (const Tracee &proc, FDInfo &&info)
 
- Protected Attributes inherited from clues::SystemCall
SystemCallNr m_nr
 The raw system call number of the system call.
 
const std::string_view m_name
 The basic name of the system call.
 
const SystemCallInfom_info = nullptr
 Current system call info during entry/exit processing, nullptr otherwise.
 
SystemCallItemPtr m_return
 The return value of the system call.
 
std::optional< ErrnoResultm_error
 If the system call fails, this is the error code.
 
ParameterVector m_pars
 The array of system call parameters, if any.
 
ABI m_abi = ABI::UNKNOWN
 The current system call ABI which is in effect.
 

Detailed Description

Definition at line 231 of file fs.hxx.

Constructor & Destructor Documentation

◆ GetDentsSystemCall()

clues::GetDentsSystemCall::GetDentsSystemCall ( const SystemCallNr nr)
inline

Definition at line 234 of file fs.hxx.

234 :
235 SystemCall{nr},
236 size{"size", "dirent size in bytes"},
237 ret_bytes{"bytes", "bytes returned in dirent", ItemType::RETVAL} {
239 setParameters(fd, dirent, size);
240 }
void setReturnItem(SystemCallItem &ret)
Sets the return value system call item.
SystemCall(const SystemCallNr nr)
Instantiates a new SystemCall object with given properties.
@ RETVAL
A system call return value.
item::FileDescriptor fd
directory FD.
Definition fs.hxx:242
item::SizeValue ret_bytes
number of bytes filled in dirent buffer.
Definition fs.hxx:245
item::DirEntries dirent
struct linux_dirent*.
Definition fs.hxx:243
item::UintValue size
size of dirent buffer provided by tracee.
Definition fs.hxx:244

Member Data Documentation

◆ dirent

item::DirEntries clues::GetDentsSystemCall::dirent

struct linux_dirent*.

Definition at line 243 of file fs.hxx.

◆ fd

item::FileDescriptor clues::GetDentsSystemCall::fd

directory FD.

Definition at line 242 of file fs.hxx.

◆ ret_bytes

item::SizeValue clues::GetDentsSystemCall::ret_bytes

number of bytes filled in dirent buffer.

Definition at line 245 of file fs.hxx.

◆ size

item::UintValue clues::GetDentsSystemCall::size

size of dirent buffer provided by tracee.

Definition at line 244 of file fs.hxx.


The documentation for this struct was generated from the following file: