acl_valid.c revision 194955
156055Srwatson/*- 2108410Srwatson * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 356055Srwatson * All rights reserved. 456055Srwatson * 5108410Srwatson * This software was developed by Robert Watson for the TrustedBSD Project. 6108410Srwatson * 756055Srwatson * Redistribution and use in source and binary forms, with or without 856055Srwatson * modification, are permitted provided that the following conditions 956055Srwatson * are met: 1056055Srwatson * 1. Redistributions of source code must retain the above copyright 1156055Srwatson * notice, this list of conditions and the following disclaimer. 1256055Srwatson * 2. Redistributions in binary form must reproduce the above copyright 1356055Srwatson * notice, this list of conditions and the following disclaimer in the 1456055Srwatson * documentation and/or other materials provided with the distribution. 1556055Srwatson * 1656055Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1756055Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1856055Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1956055Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2056055Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2156055Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2256055Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2356055Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2456055Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2556055Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2656055Srwatson * SUCH DAMAGE. 2756055Srwatson */ 2856055Srwatson/* 2956055Srwatson * acl_valid -- POSIX.1e ACL check routine 3056055Srwatson */ 3156055Srwatson 3292986Sobrien#include <sys/cdefs.h> 3392986Sobrien__FBSDID("$FreeBSD: head/lib/libc/posix1e/acl_valid.c 194955 2009-06-25 12:46:59Z trasz $"); 3492986Sobrien 3556055Srwatson#include <sys/types.h> 3675185Stmm#include "namespace.h" 3756055Srwatson#include <sys/acl.h> 3875185Stmm#include "un-namespace.h" 3956055Srwatson#include <sys/errno.h> 4091033Sjedgar#include <stdlib.h> 4156055Srwatson 4256055Srwatson#include "acl_support.h" 4356055Srwatson 4456055Srwatson/* 4556055Srwatson * acl_valid: accepts an ACL, returns 0 on valid ACL, -1 for invalid, 4656055Srwatson * and errno set to EINVAL. 4756055Srwatson * 4856055Srwatson * Implemented by calling the acl_check routine in acl_support, which 4974191Srwatson * requires ordering. We call acl_support's _posix1e_acl_sort to make this 5056760Srwatson * true. POSIX.1e allows acl_valid() to reorder the ACL as it sees fit. 5156055Srwatson * 5256055Srwatson * This call is deprecated, as it doesn't ask whether the ACL is valid 5356760Srwatson * for a particular target. However, this call is standardized, unlike 5456760Srwatson * the other two forms. 5556055Srwatson */ 5656055Srwatsonint 5756055Srwatsonacl_valid(acl_t acl) 5856055Srwatson{ 5956055Srwatson int error; 6056055Srwatson 6191033Sjedgar if (acl == NULL) { 6291033Sjedgar errno = EINVAL; 6391033Sjedgar return (-1); 6491033Sjedgar } 65194955Strasz if (!_acl_brand_may_be(acl, ACL_BRAND_POSIX)) { 66194955Strasz errno = EINVAL; 67194955Strasz return (-1); 68194955Strasz } 6974191Srwatson _posix1e_acl_sort(acl); 7074191Srwatson error = _posix1e_acl_check(acl); 7156055Srwatson if (error) { 7256055Srwatson errno = error; 7356055Srwatson return (-1); 7456055Srwatson } else { 7556055Srwatson return (0); 7656055Srwatson } 7756055Srwatson} 7856055Srwatson 7956055Srwatsonint 8056760Srwatsonacl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl) 8156055Srwatson{ 8256055Srwatson int error; 8356055Srwatson 8491033Sjedgar if (pathp == NULL || acl == NULL) { 8591033Sjedgar errno = EINVAL; 8691033Sjedgar return (-1); 8791033Sjedgar } 88192586Strasz type = _acl_type_unold(type); 8974191Srwatson if (_posix1e_acl(acl, type)) { 9074191Srwatson error = _posix1e_acl_sort(acl); 9156055Srwatson if (error) { 9256055Srwatson errno = error; 9356055Srwatson return (-1); 9456055Srwatson } 9556055Srwatson } 9656055Srwatson 9775928Sjedgar return (__acl_aclcheck_file(pathp, type, &acl->ats_acl)); 9856055Srwatson} 9956055Srwatson 100108410Srwatsonint 101108410Srwatsonacl_valid_link_np(const char *pathp, acl_type_t type, acl_t acl) 102108410Srwatson{ 103108410Srwatson int error; 10456055Srwatson 105108410Srwatson if (pathp == NULL || acl == NULL) { 106108410Srwatson errno = EINVAL; 107108410Srwatson return (-1); 108108410Srwatson } 109192586Strasz type = _acl_type_unold(type); 110108410Srwatson if (_posix1e_acl(acl, type)) { 111108410Srwatson error = _posix1e_acl_sort(acl); 112108410Srwatson if (error) { 113108410Srwatson errno = error; 114108410Srwatson return (-1); 115108410Srwatson } 116108410Srwatson } 117108410Srwatson 118108410Srwatson return (__acl_aclcheck_link(pathp, type, &acl->ats_acl)); 119108410Srwatson} 120108410Srwatson 12156055Srwatsonint 12256760Srwatsonacl_valid_fd_np(int fd, acl_type_t type, acl_t acl) 12356055Srwatson{ 12456055Srwatson int error; 12556055Srwatson 12691033Sjedgar if (acl == NULL) { 12791033Sjedgar errno = EINVAL; 12891033Sjedgar return (-1); 12991033Sjedgar } 130192586Strasz type = _acl_type_unold(type); 13174191Srwatson if (_posix1e_acl(acl, type)) { 13274191Srwatson error = _posix1e_acl_sort(acl); 13356055Srwatson if (error) { 13456055Srwatson errno = error; 13556055Srwatson return (-1); 13656055Srwatson } 13756055Srwatson } 13856055Srwatson 13975928Sjedgar acl->ats_cur_entry = 0; 14075928Sjedgar 14175928Sjedgar return (___acl_aclcheck_fd(fd, type, &acl->ats_acl)); 14256055Srwatson} 143