Botan::System_Error Class Reference

#include <exceptn.h>

Inheritance diagram for Botan::System_Error:

Public Member Functions
int	error_code () const noexcept override
ErrorType	error_type () const noexcept override
	System_Error (std::string_view msg)
	System_Error (std::string_view msg, int err_code)
const char *	what () const noexcept override

Detailed Description

System_Error

This exception is thrown in the event of an error related to interacting with the operating system.

This exception type also (optionally) captures an integer error code eg POSIX errno or Windows GetLastError.

Definition at line 304 of file exceptn.h.

Constructor & Destructor Documentation

System_Error() [1/2]

Botan::System_Error::System_Error ( std::string_view msg )

inline

Definition at line 306 of file exceptn.h.

: Exception(msg), m_error_code(0) {}

System_Error() [2/2]

Botan::System_Error::System_Error	(	std::string_view	msg,
		int	err_code )

Definition at line 137 of file exceptn.cpp.

                                                           :
      Exception(fmt("{} error code {}", msg, err_code)), m_error_code(err_code) {}

Member Function Documentation

error_code()

int Botan::System_Error::error_code ( ) const

inlineoverridevirtualnoexcept

Return an error code associated with this exception, or otherwise 0.

The domain of this error varies depending on the source, for example on POSIX systems it might be errno, while on a Windows system it might be the result of GetLastError or WSAGetLastError.

Reimplemented from Botan::Exception.

Definition at line 312 of file exceptn.h.

{ return m_error_code; }

error_type()

ErrorType Botan::System_Error::error_type ( ) const

inlineoverridevirtualnoexcept

Return the "type" of error which occurred.

Reimplemented from Botan::Exception.

Definition at line 310 of file exceptn.h.

{ return ErrorType::SystemError; }

what()

const char * Botan::Exception::what ( ) const

inlineoverridenoexceptinherited

Return a descriptive string which is hopefully comprehensible to a developer. It will likely not be useful for an end user.

The string has no particular format, and the content of exception messages may change from release to release. Thus the main use of this function is for logging or debugging.

Definition at line 93 of file exceptn.h.

{ return m_msg.c_str(); }

Referenced by Botan::TLS::Client_Key_Exchange::Client_Key_Exchange(), Botan_FFI::ffi_guard_thunk(), Botan::TLS::Callbacks::tls_ephemeral_key_agreement(), Botan::TLS::Callbacks::tls_kem_encapsulate(), and Botan::X509_Certificate::to_string().

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

• src/lib/utils/exceptn.h
• src/lib/utils/exceptn.cpp