1/* 2 * Copyright (c) 2008 Apple Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23#define _DARWIN_C_SOURCE 24 25#include <errno.h> 26#include <pwd.h> 27#include <stdint.h> 28#include <unistd.h> 29 30int32_t getgroupcount(const char *name, gid_t basegid); 31 32/* 33 * getgroups extension; not limited by NGROUPS_MAX 34 */ 35int 36getgroups(int gidsetsize, gid_t grouplist[]) 37{ 38 struct passwd *pw; 39 int n; 40 41 if ((pw = getpwuid(getuid())) == NULL) { 42 errno = EINVAL; 43 return -1; 44 } 45 if (gidsetsize == 0) { 46 if ((n = getgroupcount(pw->pw_name, pw->pw_gid)) == 0) { 47 errno = EINVAL; 48 return -1; 49 } 50 return n; 51 } 52 n = gidsetsize; 53 if (getgrouplist(pw->pw_name, pw->pw_gid, (int *)grouplist, &n) < 0) { 54 errno = EINVAL; 55 return -1; 56 } 57 return n; 58} 59