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124 lines
2.5 KiB
C
124 lines
2.5 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/sdk/crt/process/_system.c
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* PURPOSE: Excutes a shell command
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* PROGRAMER: Ariadne
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* UPDATE HISTORY:
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* 04/03/99: Created
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*/
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#include <precomp.h>
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#include <stdlib.h>
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#include <string.h>
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#include <process.h>
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/*
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* @implemented
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*/
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int system(const char *command)
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{
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char *szCmdLine = NULL;
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char *szComSpec = NULL;
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PROCESS_INFORMATION ProcessInformation;
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STARTUPINFOA StartupInfo;
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char *s;
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BOOL result;
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int nStatus;
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szComSpec = getenv("COMSPEC");
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// system should return 0 if command is null and the shell is found
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if (command == NULL) {
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if (szComSpec == NULL)
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return 0;
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else
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return 1;
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}
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if (szComSpec == NULL)
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return -1;
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// should return 127 or 0 ( MS ) if the shell is not found
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// _set_errno(ENOENT);
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if (szComSpec == NULL)
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{
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szComSpec = "cmd.exe";
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}
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/* split the path from shell command */
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s = max(strrchr(szComSpec, '\\'), strrchr(szComSpec, '/'));
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if (s == NULL)
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s = szComSpec;
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else
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s++;
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szCmdLine = malloc(strlen(s) + 4 + strlen(command) + 1);
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if (szCmdLine == NULL)
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{
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_set_errno(ENOMEM);
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return -1;
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}
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strcpy(szCmdLine, s);
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s = strrchr(szCmdLine, '.');
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if (s)
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*s = 0;
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strcat(szCmdLine, " /C ");
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strcat(szCmdLine, command);
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//command file has invalid format ENOEXEC
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memset (&StartupInfo, 0, sizeof(StartupInfo));
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StartupInfo.cb = sizeof(StartupInfo);
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StartupInfo.lpReserved= NULL;
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StartupInfo.dwFlags = STARTF_USESHOWWINDOW;
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StartupInfo.wShowWindow = SW_SHOWDEFAULT;
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StartupInfo.lpReserved2 = NULL;
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StartupInfo.cbReserved2 = 0;
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// According to ansi standards the new process should ignore SIGINT and SIGQUIT
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// In order to disable ctr-c the process is created with CREATE_NEW_PROCESS_GROUP,
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// thus SetConsoleCtrlHandler(NULL,TRUE) is made on behalf of the new process.
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//SIGCHILD should be blocked aswell
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result = CreateProcessA(szComSpec,
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szCmdLine,
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NULL,
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NULL,
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TRUE,
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CREATE_NEW_PROCESS_GROUP,
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NULL,
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NULL,
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&StartupInfo,
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&ProcessInformation);
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free(szCmdLine);
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if (result == FALSE)
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{
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_dosmaperr(GetLastError());
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return -1;
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}
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CloseHandle(ProcessInformation.hThread);
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// system should wait untill the calling process is finished
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_cwait(&nStatus,(intptr_t)ProcessInformation.hProcess,0);
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CloseHandle(ProcessInformation.hProcess);
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return nStatus;
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}
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int CDECL _wsystem(const wchar_t* cmd)
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{
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FIXME("_wsystem stub\n");
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return -1;
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}
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