1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.os;
import android.util.Slog;
import java.io.IOException;
import java.io.File;
import java.io.FileDescriptor;
/**
* This class provides access to the centralized jni bindings for
* SELinux interaction.
* {@hide}
*/
public class SELinux {
private static final String TAG = "SELinux";
/**
* Determine whether SELinux is disabled or enabled.
* @return a boolean indicating whether SELinux is enabled.
*/
public static final native boolean isSELinuxEnabled();
/**
* Determine whether SELinux is permissive or enforcing.
* @return a boolean indicating whether SELinux is enforcing.
*/
public static final native boolean isSELinuxEnforced();
/**
* Set whether SELinux is permissive or enforcing.
* @param value representing whether to set SELinux to enforcing
* @return a boolean representing whether the desired mode was set
*/
public static final native boolean setSELinuxEnforce(boolean value);
/**
* Sets the security context for newly created file objects.
* @param context a security context given as a String.
* @return a boolean indicating whether the operation succeeded.
*/
public static final native boolean setFSCreateContext(String context);
/**
* Change the security context of an existing file object.
* @param path representing the path of file object to relabel.
* @param context new security context given as a String.
* @return a boolean indicating whether the operation succeeded.
*/
public static final native boolean setFileContext(String path, String context);
/**
* Get the security context of a file object.
* @param path the pathname of the file object.
* @return a security context given as a String.
*/
public static final native String getFileContext(String path);
/**
* Get the security context of a peer socket.
* @param fd FileDescriptor class of the peer socket.
* @return a String representing the peer socket security context.
*/
public static final native String getPeerContext(FileDescriptor fd);
/**
* Gets the security context of the current process.
* @return a String representing the security context of the current process.
*/
public static final native String getContext();
/**
* Gets the security context of a given process id.
* @param pid an int representing the process id to check.
* @return a String representing the security context of the given pid.
*/
public static final native String getPidContext(int pid);
/**
* Gets a list of the SELinux boolean names.
* @return an array of strings containing the SELinux boolean names.
*/
public static final native String[] getBooleanNames();
/**
* Gets the value for the given SELinux boolean name.
* @param name The name of the SELinux boolean.
* @return a boolean indicating whether the SELinux boolean is set.
*/
public static final native boolean getBooleanValue(String name);
/**
* Sets the value for the given SELinux boolean name.
* @param name The name of the SELinux boolean.
* @param value The new value of the SELinux boolean.
* @return a boolean indicating whether or not the operation succeeded.
*/
public static final native boolean setBooleanValue(String name, boolean value);
/**
* Check permissions between two security contexts.
* @param scon The source or subject security context.
* @param tcon The target or object security context.
* @param tclass The object security class name.
* @param perm The permission name.
* @return a boolean indicating whether permission was granted.
*/
public static final native boolean checkSELinuxAccess(String scon, String tcon, String tclass, String perm);
/**
* Restores a file to its default SELinux security context.
* If the system is not compiled with SELinux, then {@code true}
* is automatically returned.
* If SELinux is compiled in, but disabled, then {@code true} is
* returned.
*
* @param pathname The pathname of the file to be relabeled.
* @return a boolean indicating whether the relabeling succeeded.
* @exception NullPointerException if the pathname is a null object.
*/
public static boolean restorecon(String pathname) throws NullPointerException {
if (pathname == null) { throw new NullPointerException(); }
return native_restorecon(pathname);
}
/**
* Restores a file to its default SELinux security context.
* If the system is not compiled with SELinux, then {@code true}
* is automatically returned.
* If SELinux is compiled in, but disabled, then {@code true} is
* returned.
*
* @param pathname The pathname of the file to be relabeled.
* @return a boolean indicating whether the relabeling succeeded.
*/
private static native boolean native_restorecon(String pathname);
/**
* Restores a file to its default SELinux security context.
* If the system is not compiled with SELinux, then {@code true}
* is automatically returned.
* If SELinux is compiled in, but disabled, then {@code true} is
* returned.
*
* @param file The File object representing the path to be relabeled.
* @return a boolean indicating whether the relabeling succeeded.
* @exception NullPointerException if the file is a null object.
*/
public static boolean restorecon(File file) throws NullPointerException {
try {
return native_restorecon(file.getCanonicalPath());
} catch (IOException e) {
Slog.e(TAG, "Error getting canonical path. Restorecon failed for " +
file.getPath(), e);
return false;
}
}
}
|
