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 2000 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 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 /* 43 * groups - show group memberships 44 */ 45 /* LINTLIBRARY PROTOLIB1 */ 46 47 #include <grp.h> 48 #include <pwd.h> 49 #include <stdio.h> 50 #include <unistd.h> 51 #include <stdlib.h> 52 53 extern struct group *getgrgid(); 54 extern struct passwd *getpwnam(); 55 extern int _getgroupsbymember(const char *, gid_t[], int, int); 56 57 static void showgroups(); 58 59 static int ngroups_max; 60 61 void 62 main(argc, argv) 63 int argc; 64 char *argv[]; 65 { 66 register int xval = 0; 67 register struct passwd *pw; 68 69 ngroups_max = sysconf(_SC_NGROUPS_MAX); 70 71 if (ngroups_max < 0) { 72 (void) fprintf(stderr, 73 "groups: could not get configuration info\n"); 74 exit(1); 75 } 76 77 if (ngroups_max == 0) 78 exit(0); 79 80 if (argc == 1) { 81 82 if ((pw = getpwuid(getuid())) == NULL) { 83 (void) fprintf(stderr, "groups: No passwd entry\n"); 84 xval = 1; 85 } else 86 showgroups(pw); 87 88 } else while (*++argv) { 89 90 if ((pw = getpwnam(*argv)) == NULL) { 91 (void) fprintf(stderr, 92 "groups: %s : No such user\n", *argv); 93 xval = 1; 94 } else { 95 if (argc > 2) 96 (void) printf("%s : ", *argv); 97 showgroups(pw); 98 } 99 } 100 101 exit(xval); 102 103 } 104 105 static void 106 showgroups(pw) 107 register struct passwd *pw; 108 { 109 register struct group *gr; 110 static gid_t *groups = NULL; 111 int ngroups; 112 int i; 113 114 if (groups == NULL) { 115 if ((groups = (gid_t *)calloc((uint_t)ngroups_max, 116 sizeof (gid_t))) == 0) { 117 (void) fprintf(stderr, 118 "allocation of %d bytes failed\n", 119 ngroups_max * sizeof (gid_t)); 120 exit(1); 121 } 122 } 123 groups[0] = pw->pw_gid; 124 125 ngroups = _getgroupsbymember(pw->pw_name, groups, ngroups_max, 1); 126 127 if (gr = getgrgid(groups[0])) 128 (void) printf("%s", gr->gr_name); 129 else 130 (void) printf("%d", (int)pw->pw_gid); 131 132 for (i = 1; i < ngroups; i++) { 133 if ((gr = getgrgid(groups[i]))) 134 (void) printf(" %s", gr->gr_name); 135 else 136 (void) printf(" %d", (int)groups[i]); 137 } 138 139 (void) printf("\n"); 140 } 141