posix1e/acl_file.c

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /* XXX temporary implementation using __acl__ file */
  25
  26 #include <sys/appleapiopts.h>
  27 #include <sys/types.h>
  28 #include <sys/acl.h>
  29 #include <sys/stat.h>
  30 #include <errno.h>
  31 #include <fcntl.h>
  32 #include <stdlib.h>
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <unistd.h>
  36
  37 #include "aclvar.h"
  38
  39 static acl_t    acl_get_file1(const char *path, acl_type_t acl_type, int follow);
  40 static int      acl_set_file1(const char *path, acl_type_t acl_type, acl_t acl, int follow);
  41
  42 int
  43 acl_delete_fd_np(int filedes, acl_type_t type)
  44 {
  45         errno = ENOTSUP;
  46         return(-1);
  47 }
  48
  49 int
  50 acl_delete_file_np(const char *path, acl_type_t type)
  51 {
  52         errno = ENOTSUP;
  53         return(-1);
  54 }
  55
  56 int
  57 acl_delete_link_np(const char *path, acl_type_t type)
  58 {
  59         errno = ENOTSUP;
  60         return(-1);
  61 }
  62
  63 acl_t
  64 acl_get_fd(int fd)
  65 {
  66         return(acl_get_fd_np(fd, ACL_TYPE_EXTENDED));
  67 }
  68
  69 acl_t
  70 acl_get_fd_np(int fd, acl_type_t type)
  71 {
  72         filesec_t       fsec;
  73         acl_t           acl;
  74         struct stat     sb;
  75
  76         if (type != ACL_TYPE_EXTENDED) {
  77                 errno = EINVAL;
  78                 return(NULL);
  79         }
  80         if ((fsec = filesec_init()) == NULL)
  81                 return(NULL);
  82
  83         acl = NULL;
  84         if (fstatx_np(fd, &sb, fsec) == 0)
  85                 filesec_get_property(fsec, FILESEC_ACL, &acl);
  86         filesec_free(fsec);
  87         return(acl);
  88 }
  89
  90 static acl_t
  91 acl_get_file1(const char *path, acl_type_t acl_type, int follow)
  92 {
  93         filesec_t       fsec;
  94         acl_t           acl;
  95         struct stat     sb;
  96
  97         if (acl_type != ACL_TYPE_EXTENDED) {
  98                 errno = EINVAL;
  99                 return(NULL);
 100         }
 101         if ((fsec = filesec_init()) == NULL)
 102                 return(NULL);
 103
 104         acl = NULL;
 105         if ((follow ? statx_np(path, &sb, fsec) : lstatx_np(path, &sb, fsec)) == 0)
 106                 filesec_get_property(fsec, FILESEC_ACL, &acl);
 107         filesec_free(fsec);
 108         return(acl);
 109 }
 110
 111 acl_t
 112 acl_get_file(const char *path, acl_type_t type)
 113 {
 114         return(acl_get_file1(path, type, 1 /* follow */));
 115 }
 116
 117 acl_t
 118 acl_get_link_np(const char *path, acl_type_t type)
 119 {
 120         return(acl_get_file1(path, type, 0 /* no follow */));
 121 }
 122
 123 int
 124 acl_set_fd_np(int fd, acl_t acl, acl_type_t type)
 125 {
 126         filesec_t       fsec;
 127         int             error;
 128
 129         if ((fsec = filesec_init()) == NULL)
 130                 return(-1);
 131         if ((filesec_set_property(fsec, FILESEC_ACL, &acl)) != 0) {
 132                 filesec_free(fsec);
 133                 return(-1);
 134         }
 135         error = fchmodx_np(fd, fsec);
 136         filesec_free(fsec);
 137         return((error == 0) ? 0 : -1);
 138 }
 139
 140 int
 141 acl_set_fd(int fd, acl_t acl)
 142 {
 143         return(acl_set_fd_np(fd, acl, ACL_TYPE_EXTENDED));
 144 }
 145
 146 static int
 147 acl_set_file1(const char *path, acl_type_t acl_type, acl_t acl, int follow)
 148 {
 149         filesec_t       fsec;
 150         int             error;
 151
 152         if (follow == 0) {              /* XXX this requires some thought - can links have ACLs? */
 153                 errno = ENOTSUP;
 154                 return(-1);
 155         }
 156
 157         if ((fsec = filesec_init()) == NULL)
 158                 return(-1);
 159         if (filesec_set_property(fsec, FILESEC_ACL, &acl) != 0) {
 160                 filesec_free(fsec);
 161                 return(-1);
 162         }
 163         error = chmodx_np(path, fsec);
 164         filesec_free(fsec);
 165         return((error == 0) ? 0 : -1);
 166 }
 167
 168 int
 169 acl_set_file(const char *path, acl_type_t acl_type, acl_t acl)
 170 {
 171         return(acl_set_file1(path, acl_type, acl, 1));
 172 }
 173
 174 int
 175 acl_set_link_np(const char *path, acl_type_t acl_type, acl_t acl)
 176 {
 177         return(acl_set_file1(path, acl_type, acl, 0));
 178 }
 179
 180 /*
 181  * Not applicable; not supported.
 182  */
 183 int
 184 acl_delete_def_file(__unused const char *path)
 185 {
 186         errno = ENOTSUP;
 187         return(-1);
 188 }