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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1990-2011 AT&T Intellectual Property *
* and is licensed under the *
* Eclipse Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.eclipse.org/org/documents/epl-v10.html *
* (with md5 checksum b35adb5213ca9657e911e9befb180842) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Research
*
* coshell system(3)
*/
#include "colib.h"
int
cosystem(const char* cmd)
{
Coshell_t* co;
Cojob_t* cj;
int status;
if (!cmd)
return !eaccess(pathshell(), X_OK);
if (!(co = coopen(NiL, CO_ANY, NiL)))
return -1;
if (cj = coexec(co, cmd, CO_SILENT, NiL, NiL, NiL))
cj = cowait(co, cj, -1);
if (!cj)
return -1;
/*
* synthesize wait() status from shell status
* lack of synthesis is the standard's proprietary sellout
*/
status = cj->status;
if (EXITED_TERM(status))
status &= ((1<<(EXIT_BITS-1))-1);
else
status = (status & ((1<<EXIT_BITS)-1)) << EXIT_BITS;
return status;
}
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