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() adds 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 || (perm & !(ACL_PERM_BITS))) { 46 errno = EINVAL; 47 return -1; 48 } 49 50 *permset_d |= perm; 51 52 return 0; 53 } 54 55 /* 56 * acl_clear_perms() clears all permisions from the permission 57 * set permset_d 58 */ 59 int 60 acl_clear_perms(acl_permset_t permset_d) 61 { 62 63 if (!permset_d) { 64 errno = EINVAL; 65 return -1; 66 } 67 68 *permset_d = 0; 69 70 return 0; 71 } 72 73 /* 74 * acl_delete_perm() removes the permission in perm from the 75 * permission set permset_d 76 */ 77 int 78 acl_delete_perm(acl_permset_t permset_d, acl_perm_t perm) 79 { 80 81 if (!permset_d) { 82 errno = EINVAL; 83 return -1; 84 } 85 86 *permset_d &= ~(perm & ACL_PERM_BITS); 87 88 return 0; 89 } 90