119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
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/***
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*spawnlpe.c - spawn a child process with environ and search along PATH
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* defines _spawnlpe() - spawn a child process with environ/PATH search
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*
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*Revision History:
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* 04-15-84 DFW written
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* 10-29-85 TC added spawnlpe
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* 12-11-87 JCR Added "_LOAD_DS" to declaration
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* 11-20-89 GJF Fixed copyright, alignment. Added const to arg types
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* for filename and arglist. #include-d PROCESS.H and
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* added ellipsis to match prototype.
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* 03-08-90 GJF Replaced _LOAD_DS with _CALLTYPE2, added #include
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* <cruntime.h> and removed #include <register.h>.
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* 07-24-90 SBM Removed redundant includes, replaced <assertm.h> by
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* <assert.h>
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* 09-27-90 GJF New-style function declarator.
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* 01-17-91 GJF ANSI naming.
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* 04-06-93 SKS Replace _CRTAPI* with __cdecl
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* 07-16-93 SRW ALPHA Merge
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* 08-31-93 GJF Merged NT SDK and Cuda versions
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* 12-07-93 CFW Wide char enable.
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* 01-10-95 CFW Debug CRT allocs.
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* 02-06-95 CFW assert -> _ASSERTE.
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* 02-06-98 GJF Changes for Win64: changed return type to intptr_t.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <stddef.h>
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#include <process.h>
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#include <stdarg.h>
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#include <internal.h>
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#include <malloc.h>
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#include <tchar.h>
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#include <dbgint.h>
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/***
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*int _spawnlpe(modeflag, filename, arglist) - spawn a child process
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*
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*Purpose:
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* Spawns a child process.
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* formats the parameters and calls _spawnvpe to do the work of searching
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* the PATH environment variable and calling _spawnve. The NULL
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* environment pointer indicates that the new process will inherit the
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* parents process's environment. NOTE - at least one argument must be
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* present. This argument is always, by convention, the name of the file
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* being spawned.
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*
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*Entry:
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* int modeflag - defines what mode of spawn (WAIT, NOWAIT, OVERLAY)
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* only WAIT and OVERLAY currently supported
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* _TSCHAR *pathname - file to spawn
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* _TSCHAR *arglist - list of arguments (environ at end)
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* call as _spawnlpe(modeflag, path, arg0, arg1, ..., argn, NULL, envp);
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*
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*Exit:
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* returns exit code of spawned process
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* returns -1 if fails
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*
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*Exceptions:
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*
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*******************************************************************************/
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intptr_t __cdecl _tspawnlpe (
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int modeflag,
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const _TSCHAR *filename,
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const _TSCHAR *arglist,
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...
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)
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{
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#ifdef _M_IX86
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REG1 const _TSCHAR **argp;
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_ASSERTE(filename != NULL);
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_ASSERTE(*filename != _T('\0'));
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_ASSERTE(arglist != NULL);
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_ASSERTE(*arglist != _T('\0'));
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argp = &arglist;
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while (*argp++)
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;
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return(_tspawnvpe(modeflag,filename,&arglist,(_TSCHAR **)*argp));
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#else /* ndef _M_IX86 */
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va_list vargs;
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_TSCHAR * argbuf[64];
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_TSCHAR ** argv;
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_TSCHAR ** envp;
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intptr_t result;
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_ASSERTE(filename != NULL);
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_ASSERTE(*filename != _T('\0'));
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_ASSERTE(arglist != NULL);
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_ASSERTE(*arglist != _T('\0'));
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va_start(vargs, arglist);
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#ifdef WPRFLAG
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argv = _wcapture_argv(&vargs, arglist, argbuf, 64);
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#else
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argv = _capture_argv(&vargs, arglist, argbuf, 64);
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#endif
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envp = va_arg(vargs, _TSCHAR **);
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va_end(vargs);
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result = _tspawnvpe(modeflag,filename,argv,envp);
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if (argv && argv != argbuf)
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_free_crt(argv);
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return result;
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#endif /* _M_IX86 */
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}
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