/*********************************************************************** * * * This software is part of the ast package * * Copyright (c) 1990-2011 AT&T Intellectual Property * * and is licensed under the * * Common Public License, Version 1.0 * * by AT&T Intellectual Property * * * * A copy of the License is available at * * http://www.opensource.org/licenses/cpl1.0.txt * * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * * * * 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; }