1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*3e14f97fSRoger A. Faulkner * Copyright (c) 1985-2010 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6da2e3ebdSchin * Common Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10da2e3ebdSchin * http://www.opensource.org/licenses/cpl1.0.txt * 11da2e3ebdSchin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * David Korn <dgk@research.att.com> * 19da2e3ebdSchin * Phong Vo <kpv@research.att.com> * 20da2e3ebdSchin * * 21da2e3ebdSchin ***********************************************************************/ 22da2e3ebdSchin #pragma prototyped 23da2e3ebdSchin /* 24da2e3ebdSchin * Glenn Fowler 25da2e3ebdSchin * AT&T Research 26da2e3ebdSchin * 27da2e3ebdSchin * close a proc opened by procopen() 28da2e3ebdSchin * otherwise exit() status of process is returned 29da2e3ebdSchin */ 30da2e3ebdSchin 31da2e3ebdSchin #include "proclib.h" 32da2e3ebdSchin 33da2e3ebdSchin #include <wait.h> 34da2e3ebdSchin 35da2e3ebdSchin int procclose(register Proc_t * p)36da2e3ebdSchinprocclose(register Proc_t* p) 37da2e3ebdSchin { 38da2e3ebdSchin int pid; 39da2e3ebdSchin int flags = 0; 40da2e3ebdSchin int status = -1; 41da2e3ebdSchin 42da2e3ebdSchin if (p) 43da2e3ebdSchin { 44da2e3ebdSchin if (p->rfd >= 0) 45da2e3ebdSchin close(p->rfd); 46da2e3ebdSchin if (p->wfd >= 0 && p->wfd != p->rfd) 47da2e3ebdSchin close(p->wfd); 48da2e3ebdSchin if (p->flags & PROC_ZOMBIE) 49da2e3ebdSchin { 50da2e3ebdSchin /* 51da2e3ebdSchin * process may leave a zombie behind 52da2e3ebdSchin * give it a chance to do that but 53da2e3ebdSchin * don't hang waiting for it 54da2e3ebdSchin */ 55da2e3ebdSchin 56da2e3ebdSchin flags |= WNOHANG; 57da2e3ebdSchin sleep(1); 58da2e3ebdSchin } 59da2e3ebdSchin if (!(p->flags & PROC_FOREGROUND)) 60da2e3ebdSchin sigcritical(SIG_REG_EXEC|SIG_REG_PROC); 61da2e3ebdSchin while ((pid = waitpid(p->pid, &status, flags)) == -1 && errno == EINTR); 62da2e3ebdSchin if (pid != p->pid && (flags & WNOHANG)) 63da2e3ebdSchin status = 0; 64da2e3ebdSchin if (!(p->flags & PROC_FOREGROUND)) 65da2e3ebdSchin sigcritical(0); 66da2e3ebdSchin else 67da2e3ebdSchin { 687c2fbfb3SApril Chin if (p->sigint != SIG_IGN) 69da2e3ebdSchin signal(SIGINT, p->sigint); 707c2fbfb3SApril Chin if (p->sigquit != SIG_IGN) 71da2e3ebdSchin signal(SIGQUIT, p->sigquit); 72da2e3ebdSchin #if defined(SIGCHLD) 73da2e3ebdSchin #if _lib_sigprocmask 74da2e3ebdSchin sigprocmask(SIG_SETMASK, &p->mask, NiL); 75da2e3ebdSchin #else 76da2e3ebdSchin #if _lib_sigsetmask 77da2e3ebdSchin sigsetmask(p->mask); 787c2fbfb3SApril Chin #else 797c2fbfb3SApril Chin if (p->sigchld != SIG_DFL) 80da2e3ebdSchin signal(SIGCHLD, p->sigchld); 81da2e3ebdSchin #endif 827c2fbfb3SApril Chin #endif 837c2fbfb3SApril Chin #endif 84da2e3ebdSchin } 85da2e3ebdSchin status = status == -1 ? 86da2e3ebdSchin EXIT_QUIT : 87da2e3ebdSchin WIFSIGNALED(status) ? 88da2e3ebdSchin EXIT_TERM(WTERMSIG(status)) : 89da2e3ebdSchin EXIT_CODE(WEXITSTATUS(status)); 90da2e3ebdSchin procfree(p); 91da2e3ebdSchin } 92da2e3ebdSchin else 93da2e3ebdSchin status = errno == ENOENT ? EXIT_NOTFOUND : EXIT_NOEXEC; 94da2e3ebdSchin return status; 95da2e3ebdSchin } 96