1 /* 2 * Copyright (c) 2001-2002 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 AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/types.h> 31 #include "namespace.h" 32 #include <sys/acl.h> 33 #include "un-namespace.h" 34 35 #include <errno.h> 36 #include <string.h> 37 38 /* 39 * acl_add_perm() (23.4.1): add the permission contained in perm to the 40 * permission set permset_d 41 */ 42 int 43 acl_add_perm(acl_permset_t permset_d, acl_perm_t perm) 44 { 45 46 if (permset_d) { 47 switch(perm) { 48 case ACL_READ: 49 case ACL_WRITE: 50 case ACL_EXECUTE: 51 *permset_d |= perm; 52 return (0); 53 } 54 } 55 56 errno = EINVAL; 57 return (-1); 58 } 59 60 /* 61 * acl_clear_perms() (23.4.3): clear all permisions from the permission 62 * set permset_d 63 */ 64 int 65 acl_clear_perms(acl_permset_t permset_d) 66 { 67 68 if (permset_d == NULL) { 69 errno = EINVAL; 70 return (-1); 71 } 72 73 *permset_d = ACL_PERM_NONE; 74 75 return (0); 76 } 77 78 /* 79 * acl_delete_perm() (23.4.10): remove the permission in perm from the 80 * permission set permset_d 81 */ 82 int 83 acl_delete_perm(acl_permset_t permset_d, acl_perm_t perm) 84 { 85 86 if (permset_d) { 87 switch(perm) { 88 case ACL_READ: 89 case ACL_WRITE: 90 case ACL_EXECUTE: 91 *permset_d &= ~(perm & ACL_PERM_BITS); 92 return (0); 93 } 94 } 95 96 errno = EINVAL; 97 return (-1); 98 } 99