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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 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 #include <sys/types.h> 31 #include <sys/stat.h> 32 #include <stdio.h> 33 #include <ctype.h> 34 #include <grp.h> 35 #include <unistd.h> 36 #include <string.h> 37 #include <userdefs.h> 38 #include <stdlib.h> 39 #include "users.h" 40 #include "messages.h" 41 42 /* lint error-killers: */ 43 int errmsg(int, int); 44 45 /* Delete a group from the GROUP file */ 46 int 47 del_group(char *group) 48 { 49 int deleted; 50 FILE *e_fptr, *t_fptr; 51 struct group *grpstruct; 52 char tname[] = "/etc/gtmp.XXXXXX"; 53 int fd; 54 struct stat sbuf; 55 boolean_t haserr; 56 int line = 1; 57 58 if ((e_fptr = fopen(GROUP, "r")) == NULL) 59 return (EX_UPDATE); 60 61 if (fstat(fileno(e_fptr), &sbuf) != 0) 62 return (EX_UPDATE); 63 64 if ((fd = mkstemp(tname)) == -1) 65 return (EX_UPDATE); 66 67 if ((t_fptr = fdopen(fd, "w")) == NULL) { 68 (void) close(fd); 69 (void) unlink(tname); 70 return (EX_UPDATE); 71 } 72 73 /* 74 * Get ownership and permissions correct 75 */ 76 77 if (fchmod(fd, sbuf.st_mode) != 0 || 78 fchown(fd, sbuf.st_uid, sbuf.st_gid) != 0) { 79 (void) fclose(t_fptr); 80 (void) unlink(tname); 81 return (EX_UPDATE); 82 } 83 84 /* loop thru GROUP looking for the one to delete */ 85 deleted = 0; 86 87 while ((grpstruct = fgetgrent(e_fptr)) != NULL) { 88 89 /* check to see if group is one to delete */ 90 if (strcmp(grpstruct->gr_name, group) == 0) 91 deleted = 1; 92 else 93 putgrent(grpstruct, t_fptr); 94 line++; 95 } 96 97 haserr = !feof(e_fptr); 98 99 if (haserr) 100 errmsg(M_SYNTAX, line); 101 102 (void) fclose(e_fptr); 103 104 if (fclose(t_fptr) != 0 || haserr) { 105 /* GROUP file contains bad entries or write failed. */ 106 (void) unlink(tname); 107 return (EX_UPDATE); 108 } 109 110 /* If deleted, update GROUP file */ 111 if (deleted) { 112 if (rename(tname, GROUP) != 0) { 113 (void) unlink(tname); 114 return (EX_UPDATE); 115 } 116 return (EX_SUCCESS); 117 } else { 118 (void) unlink(tname); 119 return (EX_NAME_NOT_EXIST); 120 } 121 } 122