17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 22*b7d62af5Sceastha /* 23*b7d62af5Sceastha * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*b7d62af5Sceastha * Use is subject to license terms. 25*b7d62af5Sceastha */ 26*b7d62af5Sceastha 277c478bd9Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 287c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate #include "mail.h" 337c478bd9Sstevel@tonic-gate 34*b7d62af5Sceastha int 35*b7d62af5Sceastha dowait(pid_t pidval) 367c478bd9Sstevel@tonic-gate { 37*b7d62af5Sceastha pid_t w; 387c478bd9Sstevel@tonic-gate int status; 397c478bd9Sstevel@tonic-gate void (*istat)(), (*qstat)(); 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate /* 427c478bd9Sstevel@tonic-gate Parent temporarily ignores signals so it will remain 437c478bd9Sstevel@tonic-gate around for command to finish 447c478bd9Sstevel@tonic-gate */ 457c478bd9Sstevel@tonic-gate istat = signal(SIGINT, SIG_IGN); 467c478bd9Sstevel@tonic-gate qstat = signal(SIGQUIT, SIG_IGN); 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate while ((w = wait(&status)) != pidval && w != CERROR); 497c478bd9Sstevel@tonic-gate if (w == CERROR) { 507c478bd9Sstevel@tonic-gate status = -errno; 517c478bd9Sstevel@tonic-gate signal(SIGINT, istat); 527c478bd9Sstevel@tonic-gate signal(SIGQUIT, qstat); 537c478bd9Sstevel@tonic-gate return (status); 547c478bd9Sstevel@tonic-gate } 557c478bd9Sstevel@tonic-gate 567c478bd9Sstevel@tonic-gate signal(SIGINT, istat); 577c478bd9Sstevel@tonic-gate signal(SIGQUIT, qstat); 587c478bd9Sstevel@tonic-gate status = ((status>>8)&0xFF); /* extract 8 high order bits */ 597c478bd9Sstevel@tonic-gate return (status); 607c478bd9Sstevel@tonic-gate } 617c478bd9Sstevel@tonic-gate 627c478bd9Sstevel@tonic-gate /* 637c478bd9Sstevel@tonic-gate invoke shell to execute command waiting for command to terminate 647c478bd9Sstevel@tonic-gate s -> command string 657c478bd9Sstevel@tonic-gate return: 667c478bd9Sstevel@tonic-gate status -> command exit status 677c478bd9Sstevel@tonic-gate */ 68*b7d62af5Sceastha int 69*b7d62af5Sceastha systm(char *s) 707c478bd9Sstevel@tonic-gate { 717c478bd9Sstevel@tonic-gate pid_t pid; 727c478bd9Sstevel@tonic-gate 737c478bd9Sstevel@tonic-gate /* 747c478bd9Sstevel@tonic-gate Spawn the shell to execute command, however, since the 757c478bd9Sstevel@tonic-gate mail command runs setgid mode reset the effective group 767c478bd9Sstevel@tonic-gate id to the real group id so that the command does not 777c478bd9Sstevel@tonic-gate acquire any special privileges 787c478bd9Sstevel@tonic-gate */ 797c478bd9Sstevel@tonic-gate if ((pid = fork()) == CHILD) { 807c478bd9Sstevel@tonic-gate setuid(my_uid); 817c478bd9Sstevel@tonic-gate setgid(my_gid); 827c478bd9Sstevel@tonic-gate #ifdef SVR3 837c478bd9Sstevel@tonic-gate execl("/bin/sh", "sh", "-c", s, (char*)NULL); 847c478bd9Sstevel@tonic-gate #else 857c478bd9Sstevel@tonic-gate execl("/usr/bin/sh", "sh", "-c", s, (char*)NULL); 867c478bd9Sstevel@tonic-gate #endif 877c478bd9Sstevel@tonic-gate exit(127); 887c478bd9Sstevel@tonic-gate } 897c478bd9Sstevel@tonic-gate return (dowait(pid)); 907c478bd9Sstevel@tonic-gate } 91