1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1990-2011 AT&T Intellectual Property * 5* and is licensed under the * 6* Common Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.opensource.org/licenses/cpl1.0.txt * 11* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12* * 13* Information and Software Systems Research * 14* AT&T Research * 15* Florham Park NJ * 16* * 17* Glenn Fowler <gsf@research.att.com> * 18* * 19***********************************************************************/ 20#pragma prototyped 21/* 22 * Glenn Fowler 23 * AT&T Research 24 * 25 * coshell system(3) 26 */ 27 28#include "colib.h" 29 30int 31cosystem(const char* cmd) 32{ 33 Coshell_t* co; 34 Cojob_t* cj; 35 int status; 36 37 if (!cmd) 38 return !eaccess(pathshell(), X_OK); 39 if (!(co = coopen(NiL, CO_ANY, NiL))) 40 return -1; 41 if (cj = coexec(co, cmd, CO_SILENT, NiL, NiL, NiL)) 42 cj = cowait(co, cj, -1); 43 if (!cj) 44 return -1; 45 46 /* 47 * synthesize wait() status from shell status 48 * lack of synthesis is the standard's proprietary sellout 49 */ 50 51 status = cj->status; 52 if (EXITED_TERM(status)) 53 status &= ((1<<(EXIT_BITS-1))-1); 54 else 55 status = (status & ((1<<EXIT_BITS)-1)) << EXIT_BITS; 56 return status; 57} 58