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Serge E. Hallyn93c06cb2008-08-26 14:47:57 -05001/*
2 *
3 * mdp - make dummy policy
4 *
5 * When pointed at a kernel tree, builds a dummy policy for that kernel
6 * with exactly one type with full rights to itself.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 *
22 * Copyright (C) IBM Corporation, 2006
23 *
24 * Authors: Serge E. Hallyn <serue@us.ibm.com>
25 */
26
27#include <stdio.h>
28#include <stdlib.h>
29#include <unistd.h>
30#include <string.h>
31
Trevor Keith5c725132009-09-22 16:43:38 -070032static void usage(char *name)
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050033{
34 printf("usage: %s [-m] policy_file context_file\n", name);
35 exit(1);
36}
37
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -040038/* Class/perm mapping support */
39struct security_class_mapping {
40 const char *name;
41 const char *perms[sizeof(unsigned) * 8 + 1];
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050042};
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050043
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -040044#include "classmap.h"
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050045#include "initial_sid_to_string.h"
46
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050047int main(int argc, char *argv[])
48{
49 int i, j, mls = 0;
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -040050 int initial_sid_to_string_len;
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050051 char **arg, *polout, *ctxout;
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -040052
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050053 FILE *fout;
54
55 if (argc < 3)
56 usage(argv[0]);
57 arg = argv+1;
58 if (argc==4 && strcmp(argv[1], "-m") == 0) {
59 mls = 1;
60 arg++;
61 }
62 polout = *arg++;
63 ctxout = *arg;
64
65 fout = fopen(polout, "w");
66 if (!fout) {
67 printf("Could not open %s for writing\n", polout);
68 usage(argv[0]);
69 }
70
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050071 /* print out the classes */
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -040072 for (i = 0; secclass_map[i].name; i++)
73 fprintf(fout, "class %s\n", secclass_map[i].name);
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050074 fprintf(fout, "\n");
75
76 initial_sid_to_string_len = sizeof(initial_sid_to_string) / sizeof (char *);
77 /* print out the sids */
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -040078 for (i = 1; i < initial_sid_to_string_len; i++)
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050079 fprintf(fout, "sid %s\n", initial_sid_to_string[i]);
80 fprintf(fout, "\n");
81
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050082 /* print out the class permissions */
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -040083 for (i = 0; secclass_map[i].name; i++) {
84 struct security_class_mapping *map = &secclass_map[i];
85 fprintf(fout, "class %s\n", map->name);
86 fprintf(fout, "{\n");
87 for (j = 0; map->perms[j]; j++)
88 fprintf(fout, "\t%s\n", map->perms[j]);
89 fprintf(fout, "}\n\n");
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -050090 }
91 fprintf(fout, "\n");
92
93 /* NOW PRINT OUT MLS STUFF */
94 if (mls) {
95 printf("MLS not yet implemented\n");
96 exit(1);
97 }
98
99 /* types, roles, and allows */
100 fprintf(fout, "type base_t;\n");
Laurent Bigonvillefda4d572015-07-07 23:10:52 +0200101 fprintf(fout, "role base_r;\n");
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500102 fprintf(fout, "role base_r types { base_t };\n");
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -0400103 for (i = 0; secclass_map[i].name; i++)
104 fprintf(fout, "allow base_t base_t:%s *;\n",
105 secclass_map[i].name);
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500106 fprintf(fout, "user user_u roles { base_r };\n");
107 fprintf(fout, "\n");
108
109 /* default sids */
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -0400110 for (i = 1; i < initial_sid_to_string_len; i++)
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500111 fprintf(fout, "sid %s user_u:base_r:base_t\n", initial_sid_to_string[i]);
112 fprintf(fout, "\n");
113
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500114 fprintf(fout, "fs_use_xattr ext2 user_u:base_r:base_t;\n");
115 fprintf(fout, "fs_use_xattr ext3 user_u:base_r:base_t;\n");
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -0400116 fprintf(fout, "fs_use_xattr ext4 user_u:base_r:base_t;\n");
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500117 fprintf(fout, "fs_use_xattr jfs user_u:base_r:base_t;\n");
118 fprintf(fout, "fs_use_xattr xfs user_u:base_r:base_t;\n");
119 fprintf(fout, "fs_use_xattr reiserfs user_u:base_r:base_t;\n");
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -0400120 fprintf(fout, "fs_use_xattr jffs2 user_u:base_r:base_t;\n");
121 fprintf(fout, "fs_use_xattr gfs2 user_u:base_r:base_t;\n");
122 fprintf(fout, "fs_use_xattr lustre user_u:base_r:base_t;\n");
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500123
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -0400124 fprintf(fout, "fs_use_task eventpollfs user_u:base_r:base_t;\n");
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500125 fprintf(fout, "fs_use_task pipefs user_u:base_r:base_t;\n");
126 fprintf(fout, "fs_use_task sockfs user_u:base_r:base_t;\n");
127
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -0400128 fprintf(fout, "fs_use_trans mqueue user_u:base_r:base_t;\n");
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500129 fprintf(fout, "fs_use_trans devpts user_u:base_r:base_t;\n");
Stephen Smalleyc6d3aaa2009-09-30 13:37:50 -0400130 fprintf(fout, "fs_use_trans hugetlbfs user_u:base_r:base_t;\n");
Serge E. Hallyn93c06cb2008-08-26 14:47:57 -0500131 fprintf(fout, "fs_use_trans tmpfs user_u:base_r:base_t;\n");
132 fprintf(fout, "fs_use_trans shm user_u:base_r:base_t;\n");
133
134 fprintf(fout, "genfscon proc / user_u:base_r:base_t\n");
135
136 fclose(fout);
137
138 fout = fopen(ctxout, "w");
139 if (!fout) {
140 printf("Wrote policy, but cannot open %s for writing\n", ctxout);
141 usage(argv[0]);
142 }
143 fprintf(fout, "/ user_u:base_r:base_t\n");
144 fprintf(fout, "/.* user_u:base_r:base_t\n");
145 fclose(fout);
146
147 return 0;
148}