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/* 2956625Srwatson * acl_get_fd - syscall wrapper for retrieving access ACL by fd 3056625Srwatson * acl_get_fd_np - syscall wrapper for retrieving ACL by fd (non-POSIX) 31108410Srwatson * acl_get_file - syscall wrapper for retrieving ACL by filename 32108410Srwatson * acl_get_link_np - syscall wrapper for retrieving ACL by filename (NOFOLLOW) 33108410Srwatson * (non-POSIX) 3475492Sjedgar * acl_get_perm_np() checks if a permission is in the specified 3575492Sjedgar * permset (non-POSIX) 3674667Sjedgar * acl_get_permset() returns the permission set in the ACL entry 3774667Sjedgar * acl_get_qualifier() retrieves the qualifier of the tag from the ACL entry 3874667Sjedgar * acl_get_tag_type() returns the tag type for the ACL entry entry_d 3956055Srwatson */ 4056055Srwatson 4192986Sobrien#include <sys/cdefs.h> 4292986Sobrien__FBSDID("$FreeBSD$"); 4392986Sobrien 4456055Srwatson#include <sys/types.h> 4575185Stmm#include "namespace.h" 4656055Srwatson#include <sys/acl.h> 4775185Stmm#include "un-namespace.h" 4874667Sjedgar 4974667Sjedgar#include <errno.h> 50195004Strasz#include <stdio.h> 5156055Srwatson#include <stdlib.h> 5274667Sjedgar#include <string.h> 53194955Strasz#include <unistd.h> 5456055Srwatson 55192586Strasz#include "acl_support.h" 56192586Strasz 5756055Srwatsonacl_t 5856055Srwatsonacl_get_file(const char *path_p, acl_type_t type) 5956055Srwatson{ 6075928Sjedgar acl_t aclp; 6156055Srwatson int error; 6256055Srwatson 6356274Srwatson aclp = acl_init(ACL_MAX_ENTRIES); 6491034Sjedgar if (aclp == NULL) 6571142Srwatson return (NULL); 6656055Srwatson 67192586Strasz type = _acl_type_unold(type); 6875928Sjedgar error = __acl_get_file(path_p, type, &aclp->ats_acl); 6956055Srwatson if (error) { 7056055Srwatson acl_free(aclp); 7171142Srwatson return (NULL); 7256055Srwatson } 7356055Srwatson 74194955Strasz aclp->ats_acl.acl_maxcnt = ACL_MAX_ENTRIES; 75194955Strasz _acl_brand_from_type(aclp, type); 76194955Strasz 7756055Srwatson return (aclp); 7856055Srwatson} 7956055Srwatson 8056625Srwatsonacl_t 81108410Srwatsonacl_get_link_np(const char *path_p, acl_type_t type) 82108410Srwatson{ 83108410Srwatson acl_t aclp; 84108410Srwatson int error; 85108410Srwatson 86108410Srwatson aclp = acl_init(ACL_MAX_ENTRIES); 87108410Srwatson if (aclp == NULL) 88108410Srwatson return (NULL); 89108410Srwatson 90192586Strasz type = _acl_type_unold(type); 91108410Srwatson error = __acl_get_link(path_p, type, &aclp->ats_acl); 92108410Srwatson if (error) { 93108410Srwatson acl_free(aclp); 94108410Srwatson return (NULL); 95108410Srwatson } 96108410Srwatson 97194955Strasz aclp->ats_acl.acl_maxcnt = ACL_MAX_ENTRIES; 98194955Strasz _acl_brand_from_type(aclp, type); 99194955Strasz 100108410Srwatson return (aclp); 101108410Srwatson} 102108410Srwatson 103108410Srwatsonacl_t 10456625Srwatsonacl_get_fd(int fd) 10556625Srwatson{ 106195004Strasz if (fpathconf(fd, _PC_ACL_NFS4) == 1) 107194955Strasz return (acl_get_fd_np(fd, ACL_TYPE_NFS4)); 10856055Srwatson 109194955Strasz return (acl_get_fd_np(fd, ACL_TYPE_ACCESS)); 11056625Srwatson} 11156625Srwatson 11256055Srwatsonacl_t 11356625Srwatsonacl_get_fd_np(int fd, acl_type_t type) 11456055Srwatson{ 11575928Sjedgar acl_t aclp; 11656055Srwatson int error; 11756055Srwatson 11856274Srwatson aclp = acl_init(ACL_MAX_ENTRIES); 11991034Sjedgar if (aclp == NULL) 12071142Srwatson return (NULL); 12156055Srwatson 122192586Strasz type = _acl_type_unold(type); 12375928Sjedgar error = ___acl_get_fd(fd, type, &aclp->ats_acl); 12456055Srwatson if (error) { 12556055Srwatson acl_free(aclp); 12671142Srwatson return (NULL); 12756055Srwatson } 12856055Srwatson 129194955Strasz aclp->ats_acl.acl_maxcnt = ACL_MAX_ENTRIES; 130194955Strasz _acl_brand_from_type(aclp, type); 131194955Strasz 13256055Srwatson return (aclp); 13356055Srwatson} 13474667Sjedgar 13575928Sjedgar/* 13675928Sjedgar * acl_get_permset() (23.4.17): return via permset_p a descriptor to 13775928Sjedgar * the permission set in the ACL entry entry_d. 13875928Sjedgar */ 13975492Sjedgarint 14074667Sjedgaracl_get_permset(acl_entry_t entry_d, acl_permset_t *permset_p) 14174667Sjedgar{ 14274667Sjedgar 14391034Sjedgar if (entry_d == NULL || permset_p == NULL) { 14474667Sjedgar errno = EINVAL; 14591034Sjedgar return (-1); 14674667Sjedgar } 14774667Sjedgar 14874667Sjedgar *permset_p = &entry_d->ae_perm; 14974667Sjedgar 15091034Sjedgar return (0); 15174667Sjedgar} 15274667Sjedgar 15375928Sjedgar/* 15475928Sjedgar * acl_get_qualifier() (23.4.18): retrieve the qualifier of the tag 15575928Sjedgar * for the ACL entry entry_d. 15675928Sjedgar */ 15774667Sjedgarvoid * 15874667Sjedgaracl_get_qualifier(acl_entry_t entry_d) 15974667Sjedgar{ 16074667Sjedgar uid_t *retval; 16174667Sjedgar 16291034Sjedgar if (entry_d == NULL) { 16374667Sjedgar errno = EINVAL; 16491034Sjedgar return (NULL); 16574667Sjedgar } 16674667Sjedgar 16774667Sjedgar switch(entry_d->ae_tag) { 16874667Sjedgar case ACL_USER: 16974667Sjedgar case ACL_GROUP: 17074667Sjedgar retval = malloc(sizeof(uid_t)); 17191034Sjedgar if (retval == NULL) 17291034Sjedgar return (NULL); 17375928Sjedgar *retval = entry_d->ae_id; 17491034Sjedgar return (retval); 17574667Sjedgar } 17674667Sjedgar 17774667Sjedgar errno = EINVAL; 17891034Sjedgar return (NULL); 17974667Sjedgar} 18074667Sjedgar 18175928Sjedgar/* 18275928Sjedgar * acl_get_tag_type() (23.4.19): return the tag type for the ACL 18375928Sjedgar * entry entry_p. 18475928Sjedgar */ 18574667Sjedgarint 18674667Sjedgaracl_get_tag_type(acl_entry_t entry_d, acl_tag_t *tag_type_p) 18774667Sjedgar{ 18874667Sjedgar 18991034Sjedgar if (entry_d == NULL || tag_type_p == NULL) { 19074667Sjedgar errno = EINVAL; 19191034Sjedgar return (-1); 19274667Sjedgar } 19374667Sjedgar 19474667Sjedgar *tag_type_p = entry_d->ae_tag; 19574667Sjedgar 19691034Sjedgar return (0); 19774667Sjedgar} 198194955Strasz 199194955Straszint 200194955Straszacl_get_entry_type_np(acl_entry_t entry_d, acl_entry_type_t *entry_type_p) 201194955Strasz{ 202194955Strasz 203194955Strasz if (entry_d == NULL || entry_type_p == NULL) { 204194955Strasz errno = EINVAL; 205194955Strasz return (-1); 206194955Strasz } 207194955Strasz 208194955Strasz if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) { 209194955Strasz errno = EINVAL; 210194955Strasz return (-1); 211194955Strasz } 212194955Strasz 213194955Strasz *entry_type_p = entry_d->ae_entry_type; 214194955Strasz 215194955Strasz return (0); 216194955Strasz} 217