/***
*spawnlp.c - spawn a file; search along PATH
*
* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines _spawnlp() - spawn a file with search along PATH
*
*Revision History:
* 04-15-84 DFW written
* 10-29-85 TC added spawnlpe
* 12-11-87 JCR Added "_LOAD_DS" to declaration
* 11-20-89 GJF Fixed copyright, alignment. Added const to arg types
* for filename and arglist. #include-d PROCESS.H and
* added ellipsis to match prototype.
* 03-08-90 GJF Replaced _LOAD_DS with _CALLTYPE2 and added #include
* <cruntime.h>.
* 07-24-90 SBM Removed redundant includes, replaced <assertm.h> by
* <assert.h>
* 09-27-90 GJF New-style function declarator.
* 01-17-91 GJF ANSI naming.
* 07-16-93 SRW ALPHA Merge
*
*******************************************************************************/
#include <cruntime.h>
#include <assert.h>
#include <stddef.h>
#include <process.h>
#include <stdarg.h>
#include <internal.h>
#include <malloc.h>
/***
*_spawnlp(modeflag, filename, arglist) - spawn file and search along PATH
*
*Purpose:
* Spawns a child process.
* formats the parameters and calls _spawnvp to do the work of searching
* the PATH environment variable and calling _spawnve. The NULL
* environment pointer indicates that the new process will inherit the
* parents process's environment. NOTE - at least one argument must be
* present. This argument is always, by convention, the name of the file
* being spawned.
*
*Entry:
* int modeflag - mode of spawn (WAIT, NOWAIT, OVERLAY)
* only WAIT, OVERLAY currently implemented
* char *pathname - file to spawn
* char *arglist - argument list
* call as _spawnlp(modeflag, path, arg0, arg1, ..., argn, NULL);
*
*Exit:
* returns exit code of child process
* returns -1 if fails
*
*Exceptions:
*
*******************************************************************************/
int _CALLTYPE2 _spawnlp (
int modeflag,
const char *filename,
const char *arglist,
...
)
{
va_list vargs;
char * argbuf[64];
char ** argv;
int result;
assert(filename != NULL);
assert(*filename != '\0');
assert(arglist != NULL);
assert(*arglist != '\0');
va_start(vargs, arglist);
argv = _capture_argv(&vargs, arglist, argbuf, 64);
va_end(vargs);
result = _spawnvp(modeflag,filename,argv);
if (argv && argv != argbuf) free(argv);
return result;
}
