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
  41 int
  42 acl_delete_fd_np(int filedes, acl_type_t type)
  43 {
  44         errno = ENOTSUP;
  45         return(-1);
  46 }
  47
  48 int
  49 acl_delete_file_np(const char *path, acl_type_t type)
  50 {
  51         errno = ENOTSUP;
  52         return(-1);
  53 }
  54
  55 int
  56 acl_delete_link_np(const char *path, acl_type_t type)
  57 {
  58         errno = ENOTSUP;
  59         return(-1);
  60 }
  61
  62 acl_t
  63 acl_get_fd(int fd)
  64 {
  65         return(acl_get_fd_np(fd, ACL_TYPE_EXTENDED));
  66 }
  67
  68 acl_t
  69 acl_get_fd_np(int fd, acl_type_t type)
  70 {
  71         filesec_t       fsec;
  72         acl_t           acl;
  73         struct stat     sb;
  74
  75         if (type != ACL_TYPE_EXTENDED) {
  76                 errno = EINVAL;
  77                 return(NULL);
  78         }
  79         if ((fsec = filesec_init()) == NULL)
  80                 return(NULL);
  81
  82         acl = NULL;
  83         if (fstatx_np(fd, &sb, fsec) == 0)
  84                 filesec_get_property(fsec, FILESEC_ACL, &acl);
  85         filesec_free(fsec);
  86         return(acl);
  87 }
  88
  89 static acl_t
  90 acl_get_file1(const char *path, acl_type_t acl_type, int follow)
  91 {
  92         filesec_t       fsec;
  93         acl_t           acl;
  94         struct stat     sb;
  95
  96         if (acl_type != ACL_TYPE_EXTENDED) {
  97                 errno = EINVAL;
  98                 return(NULL);
  99         }
 100         if ((fsec = filesec_init()) == NULL)
 101                 return(NULL);
 102
 103         acl = NULL;
 104         if ((follow ? statx_np(path, &sb, fsec) : lstatx_np(path, &sb, fsec)) == 0)
 105                 filesec_get_property(fsec, FILESEC_ACL, &acl);
 106         filesec_free(fsec);
 107         return(acl);
 108 }
 109
 110 acl_t
 111 acl_get_file(const char *path, acl_type_t type)
 112 {
 113         return(acl_get_file1(path, type, 1 /* follow */));
 114 }
 115
 116 acl_t
 117 acl_get_link_np(const char *path, acl_type_t type)
 118 {
 119         return(acl_get_file1(path, type, 0 /* no follow */));
 120 }
 121
 122 int
 123 acl_set_fd_np(int fd, acl_t acl, acl_type_t type)
 124 {
 125         filesec_t       fsec;
 126         int             error;
 127
 128         if ((fsec = filesec_init()) == NULL)
 129                 return(-1);
 130         if ((filesec_set_property(fsec, FILESEC_ACL, &acl)) != 0) {
 131                 filesec_free(fsec);
 132                 return(-1);
 133         }
 134         error = fchmodx_np(fd, fsec);
 135         filesec_free(fsec);
 136         return((error == 0) ? 0 : -1);
 137 }
 138
 139 int
 140 acl_set_fd(int fd, acl_t acl)
 141 {
 142         return(acl_set_fd_np(fd, acl, ACL_TYPE_EXTENDED));
 143 }
 144
 145 int
 146 acl_set_file(const char *path, acl_type_t acl_type, acl_t acl)
 147 {
 148         filesec_t       fsec;
 149         int             error;
 150
 151         if ((fsec = filesec_init()) == NULL)
 152                 return(-1);
 153         if (filesec_set_property(fsec, FILESEC_ACL, &acl) != 0) {
 154                 filesec_free(fsec);
 155                 return(-1);
 156         }
 157         error = chmodx_np(path, fsec);
 158         filesec_free(fsec);
 159         return((error == 0) ? 0 : -1);
 160 }
 161
 162 int
 163 acl_set_link_np(const char *path, acl_type_t acl_type, acl_t acl)
 164 {
 165         struct stat s;
 166
 167         if(lstat(path, &s) < 0)
 168                 return(-1);
 169         if(S_ISLNK(s.st_mode)) {
 170                 errno = ENOTSUP;
 171                 return(-1);
 172         }
 173         return(acl_set_file(path, acl_type, acl));
 174 }
 175
 176 /*
 177  * Not applicable; not supported.
 178  */
 179 int
 180 acl_delete_def_file(__unused const char *path)
 181 {
 182         errno = ENOTSUP;
 183         return(-1);
 184 }