1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed by Robert Watson for the TrustedBSD Project. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 /* 31 * acl_set_file -- set a file/directory ACL by name 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/types.h> 38 #include "namespace.h" 39 #include <sys/acl.h> 40 #include "un-namespace.h" 41 42 #include <errno.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <unistd.h> 46 47 #include "acl_support.h" 48 49 /* 50 * For POSIX.1e-semantic ACLs, do a presort so the kernel doesn't have to 51 * (the POSIX.1e semantic code will reject unsorted ACL submission). If it's 52 * not a semantic that the library knows about, just submit it flat and 53 * assume the caller knows what they're up to. 54 */ 55 int 56 acl_set_file(const char *path_p, acl_type_t type, acl_t acl) 57 { 58 59 if (acl == NULL || path_p == NULL) { 60 errno = EINVAL; 61 return (-1); 62 } 63 type = _acl_type_unold(type); 64 if (_acl_type_not_valid_for_acl(acl, type)) { 65 errno = EINVAL; 66 return (-1); 67 } 68 if (_posix1e_acl(acl, type)) 69 _posix1e_acl_sort(acl); 70 71 acl->ats_cur_entry = 0; 72 73 return (__acl_set_file(path_p, type, &acl->ats_acl)); 74 } 75 76 int 77 acl_set_link_np(const char *path_p, acl_type_t type, acl_t acl) 78 { 79 80 if (acl == NULL || path_p == NULL) { 81 errno = EINVAL; 82 return (-1); 83 } 84 type = _acl_type_unold(type); 85 if (_acl_type_not_valid_for_acl(acl, type)) { 86 errno = EINVAL; 87 return (-1); 88 } 89 if (_posix1e_acl(acl, type)) 90 _posix1e_acl_sort(acl); 91 92 acl->ats_cur_entry = 0; 93 94 return (__acl_set_link(path_p, type, &acl->ats_acl)); 95 } 96 97 int 98 acl_set_fd(int fd, acl_t acl) 99 { 100 101 if (fpathconf(fd, _PC_ACL_NFS4) == 1) 102 return (acl_set_fd_np(fd, acl, ACL_TYPE_NFS4)); 103 104 return (acl_set_fd_np(fd, acl, ACL_TYPE_ACCESS)); 105 } 106 107 int 108 acl_set_fd_np(int fd, acl_t acl, acl_type_t type) 109 { 110 111 if (acl == NULL) { 112 errno = EINVAL; 113 return (-1); 114 } 115 type = _acl_type_unold(type); 116 if (_acl_type_not_valid_for_acl(acl, type)) { 117 errno = EINVAL; 118 return (-1); 119 } 120 if (_posix1e_acl(acl, type)) 121 _posix1e_acl_sort(acl); 122 123 acl->ats_cur_entry = 0; 124 125 return (___acl_set_fd(fd, type, &acl->ats_acl)); 126 } 127 128 /* 129 * acl_set_permset() (23.4.23): sets the permissions of ACL entry entry_d 130 * with the permissions in permset_d 131 */ 132 int 133 acl_set_permset(acl_entry_t entry_d, acl_permset_t permset_d) 134 { 135 136 if (!entry_d) { 137 errno = EINVAL; 138 return (-1); 139 } 140 141 if ((*permset_d & ACL_POSIX1E_BITS) != *permset_d) { 142 if ((*permset_d & ACL_NFS4_PERM_BITS) != *permset_d) { 143 errno = EINVAL; 144 return (-1); 145 } 146 if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) { 147 errno = EINVAL; 148 return (-1); 149 } 150 _entry_brand_as(entry_d, ACL_BRAND_NFS4); 151 } 152 153 entry_d->ae_perm = *permset_d; 154 155 return (0); 156 } 157 158 /* 159 * acl_set_qualifier() sets the qualifier (ae_id) of the tag for 160 * ACL entry entry_d to the value referred to by tag_qualifier_p 161 */ 162 int 163 acl_set_qualifier(acl_entry_t entry_d, const void *tag_qualifier_p) 164 { 165 166 if (!entry_d || !tag_qualifier_p) { 167 errno = EINVAL; 168 return (-1); 169 } 170 switch(entry_d->ae_tag) { 171 case ACL_USER: 172 case ACL_GROUP: 173 entry_d->ae_id = *(uid_t *)tag_qualifier_p; 174 break; 175 default: 176 errno = EINVAL; 177 return (-1); 178 } 179 180 return (0); 181 } 182 183 /* 184 * acl_set_tag_type() sets the tag type for ACL entry entry_d to the 185 * value of tag_type 186 */ 187 int 188 acl_set_tag_type(acl_entry_t entry_d, acl_tag_t tag_type) 189 { 190 191 if (entry_d == NULL) { 192 errno = EINVAL; 193 return (-1); 194 } 195 196 switch(tag_type) { 197 case ACL_OTHER: 198 case ACL_MASK: 199 if (!_entry_brand_may_be(entry_d, ACL_BRAND_POSIX)) { 200 errno = EINVAL; 201 return (-1); 202 } 203 _entry_brand_as(entry_d, ACL_BRAND_POSIX); 204 break; 205 case ACL_EVERYONE: 206 if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) { 207 errno = EINVAL; 208 return (-1); 209 } 210 _entry_brand_as(entry_d, ACL_BRAND_NFS4); 211 break; 212 } 213 214 switch(tag_type) { 215 case ACL_USER_OBJ: 216 case ACL_USER: 217 case ACL_GROUP_OBJ: 218 case ACL_GROUP: 219 case ACL_MASK: 220 case ACL_OTHER: 221 case ACL_EVERYONE: 222 entry_d->ae_tag = tag_type; 223 return (0); 224 } 225 226 errno = EINVAL; 227 return (-1); 228 } 229 230 int 231 acl_set_entry_type_np(acl_entry_t entry_d, acl_entry_type_t entry_type) 232 { 233 234 if (entry_d == NULL) { 235 errno = EINVAL; 236 return (-1); 237 } 238 if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) { 239 errno = EINVAL; 240 return (-1); 241 } 242 _entry_brand_as(entry_d, ACL_BRAND_NFS4); 243 244 switch (entry_type) { 245 case ACL_ENTRY_TYPE_ALLOW: 246 case ACL_ENTRY_TYPE_DENY: 247 case ACL_ENTRY_TYPE_AUDIT: 248 case ACL_ENTRY_TYPE_ALARM: 249 entry_d->ae_entry_type = entry_type; 250 return (0); 251 } 252 253 errno = EINVAL; 254 return (-1); 255 } 256