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 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #include <stdio.h> 36 #include <ctype.h> 37 #include <grp.h> 38 #include <unistd.h> 39 #include <string.h> 40 #include <userdefs.h> 41 #include <stdlib.h> 42 #include "users.h" 43 #include "messages.h" 44 45 /* lint error-killers: */ 46 int errmsg(int, int); 47 48 /* Delete a group from the GROUP file */ 49 int 50 del_group(char *group) 51 { 52 int deleted; 53 FILE *e_fptr, *t_fptr; 54 struct group *grpstruct; 55 char tname[] = "/etc/gtmp.XXXXXX"; 56 int fd; 57 struct stat sbuf; 58 boolean_t haserr; 59 int line = 1; 60 61 if ((e_fptr = fopen(GROUP, "r")) == NULL) 62 return (EX_UPDATE); 63 64 if (fstat(fileno(e_fptr), &sbuf) != 0) 65 return (EX_UPDATE); 66 67 if ((fd = mkstemp(tname)) == -1) 68 return (EX_UPDATE); 69 70 if ((t_fptr = fdopen(fd, "w")) == NULL) { 71 (void) close(fd); 72 (void) unlink(tname); 73 return (EX_UPDATE); 74 } 75 76 /* 77 * Get ownership and permissions correct 78 */ 79 80 if (fchmod(fd, sbuf.st_mode) != 0 || 81 fchown(fd, sbuf.st_uid, sbuf.st_gid) != 0) { 82 (void) fclose(t_fptr); 83 (void) unlink(tname); 84 return (EX_UPDATE); 85 } 86 87 /* loop thru GROUP looking for the one to delete */ 88 deleted = 0; 89 90 while ((grpstruct = fgetgrent(e_fptr)) != NULL) { 91 92 /* check to see if group is one to delete */ 93 if (strcmp(grpstruct->gr_name, group) == 0) 94 deleted = 1; 95 else 96 putgrent(grpstruct, t_fptr); 97 line++; 98 } 99 100 haserr = !feof(e_fptr); 101 102 if (haserr) 103 errmsg(M_SYNTAX, line); 104 105 (void) fclose(e_fptr); 106 107 if (fclose(t_fptr) != 0 || haserr) { 108 /* GROUP file contains bad entries or write failed. */ 109 (void) unlink(tname); 110 return (EX_UPDATE); 111 } 112 113 /* If deleted, update GROUP file */ 114 if (deleted) { 115 if (rename(tname, GROUP) != 0) { 116 (void) unlink(tname); 117 return (EX_UPDATE); 118 } 119 return (EX_SUCCESS); 120 } else { 121 (void) unlink(tname); 122 return (EX_NAME_NOT_EXIST); 123 } 124 } 125