1*4887Schin /*********************************************************************** 2*4887Schin * * 3*4887Schin * This software is part of the ast package * 4*4887Schin * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5*4887Schin * and is licensed under the * 6*4887Schin * Common Public License, Version 1.0 * 7*4887Schin * by AT&T Knowledge Ventures * 8*4887Schin * * 9*4887Schin * A copy of the License is available at * 10*4887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 11*4887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12*4887Schin * * 13*4887Schin * Information and Software Systems Research * 14*4887Schin * AT&T Research * 15*4887Schin * Florham Park NJ * 16*4887Schin * * 17*4887Schin * Glenn Fowler <gsf@research.att.com> * 18*4887Schin * David Korn <dgk@research.att.com> * 19*4887Schin * Phong Vo <kpv@research.att.com> * 20*4887Schin * * 21*4887Schin ***********************************************************************/ 22*4887Schin #pragma prototyped 23*4887Schin /* 24*4887Schin * Glenn Fowler 25*4887Schin * AT&T Research 26*4887Schin * 27*4887Schin * close a proc opened by procopen() 28*4887Schin * otherwise exit() status of process is returned 29*4887Schin */ 30*4887Schin 31*4887Schin #include "proclib.h" 32*4887Schin 33*4887Schin #include <wait.h> 34*4887Schin 35*4887Schin int 36*4887Schin procclose(register Proc_t* p) 37*4887Schin { 38*4887Schin int pid; 39*4887Schin int flags = 0; 40*4887Schin int status = -1; 41*4887Schin 42*4887Schin if (p) 43*4887Schin { 44*4887Schin if (p->rfd >= 0) 45*4887Schin close(p->rfd); 46*4887Schin if (p->wfd >= 0 && p->wfd != p->rfd) 47*4887Schin close(p->wfd); 48*4887Schin if (p->flags & PROC_ZOMBIE) 49*4887Schin { 50*4887Schin /* 51*4887Schin * process may leave a zombie behind 52*4887Schin * give it a chance to do that but 53*4887Schin * don't hang waiting for it 54*4887Schin */ 55*4887Schin 56*4887Schin flags |= WNOHANG; 57*4887Schin sleep(1); 58*4887Schin } 59*4887Schin if (!(p->flags & PROC_FOREGROUND)) 60*4887Schin sigcritical(SIG_REG_EXEC|SIG_REG_PROC); 61*4887Schin while ((pid = waitpid(p->pid, &status, flags)) == -1 && errno == EINTR); 62*4887Schin if (pid != p->pid && (flags & WNOHANG)) 63*4887Schin status = 0; 64*4887Schin if (!(p->flags & PROC_FOREGROUND)) 65*4887Schin sigcritical(0); 66*4887Schin else 67*4887Schin { 68*4887Schin signal(SIGINT, p->sigint); 69*4887Schin signal(SIGQUIT, p->sigquit); 70*4887Schin #if defined(SIGCHLD) 71*4887Schin #if _lib_sigprocmask 72*4887Schin sigprocmask(SIG_SETMASK, &p->mask, NiL); 73*4887Schin #else 74*4887Schin #if _lib_sigsetmask 75*4887Schin sigsetmask(p->mask); 76*4887Schin #endif 77*4887Schin #endif 78*4887Schin signal(SIGCHLD, p->sigchld); 79*4887Schin #endif 80*4887Schin } 81*4887Schin status = status == -1 ? 82*4887Schin EXIT_QUIT : 83*4887Schin WIFSIGNALED(status) ? 84*4887Schin EXIT_TERM(WTERMSIG(status)) : 85*4887Schin EXIT_CODE(WEXITSTATUS(status)); 86*4887Schin procfree(p); 87*4887Schin } 88*4887Schin else 89*4887Schin status = errno == ENOENT ? EXIT_NOTFOUND : EXIT_NOEXEC; 90*4887Schin return status; 91*4887Schin } 92