1 /* 2 * Copyright (c) 2001 Chris D. Faulhaber 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE 18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 24 * POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/types.h> 30 #include "namespace.h" 31 #include <sys/acl.h> 32 #include "un-namespace.h" 33 34 #include <errno.h> 35 #include <string.h> 36 37 /* 38 * acl_add_perm() (23.4.1): add the permission contained in perm to the 39 * permission set permset_d 40 */ 41 int 42 acl_add_perm(acl_permset_t permset_d, acl_perm_t perm) 43 { 44 45 if (permset_d) { 46 switch(perm) { 47 case ACL_READ: 48 case ACL_WRITE: 49 case ACL_EXECUTE: 50 *permset_d |= perm; 51 return 0; 52 } 53 } 54 55 errno = EINVAL; 56 return -1; 57 } 58 59 /* 60 * acl_clear_perms() (23.4.3): clear all permisions from the permission 61 * set permset_d 62 */ 63 int 64 acl_clear_perms(acl_permset_t permset_d) 65 { 66 67 if (!permset_d) { 68 errno = EINVAL; 69 return -1; 70 } 71 72 *permset_d = ACL_PERM_NONE; 73 74 return 0; 75 } 76 77 /* 78 * acl_delete_perm() (23.4.10): remove the permission in perm from the 79 * permission set permset_d 80 */ 81 int 82 acl_delete_perm(acl_permset_t permset_d, acl_perm_t perm) 83 { 84 85 if (permset_d) { 86 switch(perm) { 87 case ACL_READ: 88 case ACL_WRITE: 89 case ACL_EXECUTE: 90 *permset_d &= ~(perm & ACL_PERM_BITS); 91 return 0; 92 } 93 } 94 95 errno = EINVAL; 96 return -1; 97 } 98