1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * These routines are based on the standard UNIX stdio popen/pclose 32 * routines. This version takes an argv[][] argument instead of a string 33 * to be passed to the shell. The routine execvp() is used to call the 34 * program, hence the name popenvp() and the argument types. 35 * 36 * This routine avoids an extra shell completely, along with not having 37 * to worry about quoting conventions in strings that have spaces, 38 * quotes, etc. 39 */ 40 41 #include <sys/types.h> 42 #include "libmail.h" 43 #include <signal.h> 44 #include <unistd.h> 45 #include <wait.h> 46 47 pid_t 48 systemvp(char *file, char **argv, int resetid) 49 { 50 int status; 51 pid_t pid, w; 52 void (*istat)(int), (*qstat)(int); 53 54 if ((pid = fork()) == 0) { 55 if (resetid) { 56 (void) setgid(getgid()); 57 (void) setuid(getuid()); 58 } 59 (void) execvp(file, argv); 60 _exit(127); 61 } 62 istat = signal(SIGINT, SIG_IGN); 63 qstat = signal(SIGQUIT, SIG_IGN); 64 do { 65 w = wait(&status); 66 } while (w != pid && w != (pid_t)-1); 67 (void) signal(SIGINT, istat); 68 (void) signal(SIGQUIT, qstat); 69 return ((w == (pid_t)-1)? w: (pid_t)status); 70 } 71