1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2011 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* David Korn <dgk@research.att.com> * 19* Phong Vo <kpv@research.att.com> * 20* * 21***********************************************************************/ 22#pragma prototyped 23 24#include <ast.h> 25 26#if _lib_execve 27 28NoN(execve) 29 30#else 31 32#include <sig.h> 33#include <wait.h> 34#include <error.h> 35 36static pid_t childpid; 37 38static void 39execsig(int sig) 40{ 41 kill(childpid, sig); 42 signal(sig, execsig); 43} 44 45#if defined(__EXPORT__) 46#define extern __EXPORT__ 47#endif 48 49extern int 50execve(const char* path, char* const argv[], char* const arge[]) 51{ 52 int status; 53 54 if ((childpid = spawnve(path, argv, arge)) < 0) 55 return(-1); 56 for (status = 0; status < 64; status++) 57 signal(status, execsig); 58 while (waitpid(childpid, &status, 0) == -1) 59 if (errno != EINTR) return(-1); 60 if (WIFSIGNALED(status)) 61 { 62 signal(WTERMSIG(status), SIG_DFL); 63 kill(getpid(), WTERMSIG(status)); 64 pause(); 65 } 66 else status = WEXITSTATUS(status); 67 exit(status); 68} 69 70#endif 71