Additional data delivered with SIGSEGV signals. More...

#include <SigInfo.hxx>

Inheritance diagram for cosmos::SigInfo::SegfaultData:

Classes
struct	Bound

Public Types
enum class	Reason : int { MAP_ERROR = SEGV_MAPERR , ACCESS_ERROR = SEGV_ACCERR , BOUND_ERROR = SEGV_BNDERR , PROT_KEY_ERROR = SEGV_PKUERR , ACCESS_ADI = SEGV_ACCADI , MCD_DISRUPT = SEGV_ADIDERR , PRECISE_MCD = SEGV_ADIPERR , ASYNC_MTE = SEGV_MTEAERR , SYNC_MTE = SEGV_MTESERR , CPROT_ERROR = SEGV_CPERR }
	Different reasons for delivering a SIGSEGV signal. More...

enum class	ProtectionKey : unsigned int

Public Attributes
Reason	reason
	The reason why SIGSEGV was delivered.

std::optional< Bound >	bound
	For Reason::BOUND_ERROR this contains the lower and upper bound.

std::optional< ProtectionKey >	key
	For Reason::PROT_KEY_ERROR this contains the protection key that caused the fault.

Public Attributes inherited from cosmos::SigInfo::FaultData
void *	addr
	The address of the fault / trap.

Detailed Description

Additional data delivered with SIGSEGV signals.

Definition at line 263 of file SigInfo.hxx.

Member Enumeration Documentation

◆ ProtectionKey

enum class cosmos::SigInfo::SegfaultData::ProtectionKey : unsigned int

strong

Definition at line 286 of file SigInfo.hxx.

286 : unsigned int {

287 };

◆ Reason

enum class cosmos::SigInfo::SegfaultData::Reason : int

strong

Different reasons for delivering a SIGSEGV signal.

Enumerator
MAP_ERROR	address not mapped to an object.
ACCESS_ERROR	invalid permissions for mapped object.
BOUND_ERROR	failed address bound checks.
PROT_KEY_ERROR	access was denied by memory protection keys (pkeys(7)).
ACCESS_ADI	ADI (application data integrity) not enabled for mapped object (SPARC specific).
MCD_DISRUPT	disrupting MCD error (Sparc ADI specific).
PRECISE_MCD	precise MCD exception (Sparc ADI specific).
ASYNC_MTE	asynchronous ARM MTE error.
SYNC_MTE	synchronous ARM MTE error.
CPROT_ERROR	control protection error (aarch64 guarded control stack).

Definition at line 267 of file SigInfo.hxx.

                                  : int {
                        MAP_ERROR      = SEGV_MAPERR, 
                        ACCESS_ERROR   = SEGV_ACCERR, 
                        BOUND_ERROR    = SEGV_BNDERR, 
                        PROT_KEY_ERROR = SEGV_PKUERR, 
                        ACCESS_ADI     = SEGV_ACCADI, 
                        MCD_DISRUPT    = SEGV_ADIDERR, 
                        PRECISE_MCD    = SEGV_ADIPERR, 
                        ASYNC_MTE      = SEGV_MTEAERR, 
                        SYNC_MTE       = SEGV_MTESERR, 
                        CPROT_ERROR    = SEGV_CPERR,   
                };

Member Data Documentation

◆ bound

std::optional<Bound> cosmos::SigInfo::SegfaultData::bound

For Reason::BOUND_ERROR this contains the lower and upper bound.

Definition at line 294 of file SigInfo.hxx.

◆ key

std::optional<ProtectionKey> cosmos::SigInfo::SegfaultData::key

For Reason::PROT_KEY_ERROR this contains the protection key that caused the fault.

Definition at line 296 of file SigInfo.hxx.

◆ reason

Reason cosmos::SigInfo::SegfaultData::reason

The reason why SIGSEGV was delivered.

Definition at line 292 of file SigInfo.hxx.

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

include/proc/SigInfo.hxx

Classes

Public Types

Public Attributes