Something went wrong. Try again.
Reactos
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687//// system.cpp//// Copyright (c) Microsoft Corporation. All rights reserved.//// Defines the system() family of functions, which execute a command via the// shell.//#include <corecrt_internal.h>#include <corecrt_internal_traits.h>#include <process.h>#include <io.h>#include <stdlib.h>#include <errno.h>
// Executes a command via the shell. If the command is null, attempts to execute// the command processor specified by the %COMSPEC% environment variable. If // that fails, attempts to execute cmd.exe.template <typename Character>static int __cdecl common_system(Character const* const command) throw(){ typedef __crt_char_traits<Character> traits;
static Character const comspec_name[] = { 'C', 'O', 'M', 'S', 'P', 'E', 'C', '\0' }; static Character const cmd_exe[] = { 'c', 'm', 'd', '.', 'e', 'x', 'e', '\0' }; static Character const slash_c[] = { '/', 'c', '\0' };
__crt_unique_heap_ptr<Character> comspec_value; _ERRCHECK_EINVAL(traits::tdupenv_s_crt(comspec_value.get_address_of(), nullptr, comspec_name));
// If the command is null, return TRUE only if %COMSPEC% is set and the file // to which it points exists. if (!command) { if (!comspec_value) return 0;
return traits::taccess_s(comspec_value.get(), 0) == 0; }
_ASSERTE(command[0] != '\0');
Character const* arguments[4] = { comspec_value.get(), slash_c, command, nullptr };
if (comspec_value) { errno_t const saved_errno = errno; errno = 0;
int const result = static_cast<int>(traits::tspawnve(_P_WAIT, arguments[0], arguments, nullptr)); if (result != -1) { errno = saved_errno; return result; }
if (errno != ENOENT && errno != EACCES) { return result; }
// If the error wasn't one of those two errors, try again with cmd.exe... errno = saved_errno; }
arguments[0] = cmd_exe; return static_cast<int>(traits::tspawnvpe(_P_WAIT, arguments[0], arguments, nullptr));}
extern "C" int __cdecl system(char const* const command){ return common_system(command);}
extern "C" int __cdecl _wsystem(wchar_t const* const command){ return common_system(command);}