Something went wrong. Try again.
Reactos
Something went wrong. Try again.
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273/****perror.c - print system error message** Copyright (c) Microsoft Corporation. All rights reserved.**Purpose:* defines perror() - print system error message* System error message are indexed by errno; conforms to XENIX* standard, with much compatability with 1983 uniforum draft standard.********************************************************************************/#include <corecrt_internal.h>#include <corecrt_internal_lowio.h>#include <corecrt_internal_ptd_propagation.h>#include <io.h>#include <stdio.h>#include <stdlib.h>#include <string.h>
#pragma warning(disable:__WARNING_RETVAL_IGNORED_FUNC_COULD_FAIL) // 6031 return value ignored
/****void perror(message) - print system error message**Purpose:* prints user's error message, then follows it with ": ", then the system* error message, then a newline. All output goes to stderr. If user's* message is nullptr or a null string, only the system error message is* printer. If errno is weird, prints "Unknown error".**Entry:* const char *message - users message to prefix system error message**Exit:* Prints message; no return value.**Exceptions:********************************************************************************/
static void __cdecl _perror_internal(char const* const user_prefix, __crt_cached_ptd_host& ptd){ int const fh = 2;
__acrt_lowio_lock_fh(fh); __try { if (user_prefix != nullptr && user_prefix[0] != '\0') { _write_nolock(fh, user_prefix, static_cast<unsigned>(strlen(user_prefix)), ptd); _write_nolock(fh, ": ", 2, ptd); }
// Use PTD directly to access previously set errno value. char const* const system_message = _get_sys_err_msg(ptd.get_raw_ptd()->_terrno);
_write_nolock(fh, system_message, static_cast<unsigned>(strlen(system_message)), ptd); _write_nolock(fh, "\n", 1, ptd);
} __finally { __acrt_lowio_unlock_fh( fh ); } __endtry}
extern "C" void __cdecl perror(char const* const user_prefix){ __crt_cached_ptd_host ptd; return _perror_internal(user_prefix, ptd);}