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 ((fsec = filesec_init()) == NULL)
  77                 return(NULL);
  78
  79         acl = NULL;
  80         if (fstatx_np(fd, &sb, fsec) == 0)
  81                 filesec_get_property(fsec, FILESEC_ACL, &acl);
  82         filesec_free(fsec);
  83         return(acl);
  84 }
  85
  86 static acl_t
  87 acl_get_file1(const char *path, acl_type_t acl_type, int follow)
  88 {
  89         filesec_t       fsec;
  90         acl_t           acl;
  91         struct stat     sb;
  92
  93         if ((fsec = filesec_init()) == NULL)
  94                 return(NULL);
  95
  96         acl = NULL;
  97         if ((follow ? statx_np(path, &sb, fsec) : lstatx_np(path, &sb, fsec)) == 0)
  98                 filesec_get_property(fsec, FILESEC_ACL, &acl);
  99         filesec_free(fsec);
 100         return(acl);
 101 }
 102
 103 acl_t
 104 acl_get_file(const char *path, acl_type_t type)
 105 {
 106         return(acl_get_file1(path, type, 1 /* follow */));
 107 }
 108
 109 acl_t
 110 acl_get_link_np(const char *path, acl_type_t type)
 111 {
 112         return(acl_get_file1(path, type, 0 /* no follow */));
 113 }
 114
 115 int
 116 acl_set_fd_np(int fd, acl_t acl, acl_type_t type)
 117 {
 118         filesec_t       fsec;
 119         int             error;
 120
 121         if ((fsec = filesec_init()) == NULL)
 122                 return(-1);
 123         if ((filesec_set_property(fsec, FILESEC_ACL, &acl)) != 0) {
 124                 filesec_free(fsec);
 125                 return(-1);
 126         }
 127         error = fchmodx_np(fd, fsec);
 128         filesec_free(fsec);
 129         return((error == 0) ? 0 : -1);
 130 }
 131
 132 int
 133 acl_set_fd(int fd, acl_t acl)
 134 {
 135         return(acl_set_fd_np(fd, acl, ACL_TYPE_EXTENDED));
 136 }
 137
 138 static int
 139 acl_set_file1(const char *path, acl_type_t acl_type, acl_t acl, int follow)
 140 {
 141         filesec_t       fsec;
 142         int             error;
 143
 144         if (follow == 0) {              /* XXX this requires some thought - can links have ACLs? */
 145                 errno = ENOTSUP;
 146                 return(-1);
 147         }
 148
 149         if ((fsec = filesec_init()) == NULL)
 150                 return(-1);
 151         if (filesec_set_property(fsec, FILESEC_ACL, &acl) != 0) {
 152                 filesec_free(fsec);
 153                 return(-1);
 154         }
 155         error = chmodx_np(path, fsec);
 156         filesec_free(fsec);
 157         return((error == 0) ? 0 : -1);
 158 }
 159
 160 int
 161 acl_set_file(const char *path, acl_type_t acl_type, acl_t acl)
 162 {
 163         return(acl_set_file1(path, acl_type, acl, 1));
 164 }
 165
 166 int
 167 acl_set_link_np(const char *path, acl_type_t acl_type, acl_t acl)
 168 {
 169         return(acl_set_file1(path, acl_type, acl, 0));
 170 }
 171
 172 /*
 173  * Not applicable; not supported.
 174  */
 175 int
 176 acl_delete_def_file(__unused const char *path)
 177 {
 178         errno = ENOTSUP;
 179         return(-1);
 180 }