154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/*
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*
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* mdp - make dummy policy
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*
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* When pointed at a kernel tree, builds a dummy policy for that kernel
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* with exactly one type with full rights to itself.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* Copyright (C) IBM Corporation, 2006
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*
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* Authors: Serge E. Hallyn <serue@us.ibm.com>
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*/
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/* NOTE: we really do want to use the kernel headers here */
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#define __EXPORTED_HEADERS__
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/socket.h>
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static void usage(char *name)
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{
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printf("usage: %s [-m] policy_file context_file\n", name);
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exit(1);
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}
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/* Class/perm mapping support */
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struct security_class_mapping {
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const char *name;
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const char *perms[sizeof(unsigned) * 8 + 1];
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};
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#include "classmap.h"
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#include "initial_sid_to_string.h"
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int main(int argc, char *argv[])
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{
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int i, j, mls = 0;
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int initial_sid_to_string_len;
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char **arg, *polout, *ctxout;
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FILE *fout;
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if (argc < 3)
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usage(argv[0]);
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arg = argv+1;
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if (argc==4 && strcmp(argv[1], "-m") == 0) {
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mls = 1;
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arg++;
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}
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polout = *arg++;
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ctxout = *arg;
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fout = fopen(polout, "w");
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if (!fout) {
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printf("Could not open %s for writing\n", polout);
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usage(argv[0]);
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}
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/* print out the classes */
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for (i = 0; secclass_map[i].name; i++)
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fprintf(fout, "class %s\n", secclass_map[i].name);
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fprintf(fout, "\n");
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initial_sid_to_string_len = sizeof(initial_sid_to_string) / sizeof (char *);
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/* print out the sids */
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for (i = 1; i < initial_sid_to_string_len; i++)
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fprintf(fout, "sid %s\n", initial_sid_to_string[i]);
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fprintf(fout, "\n");
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/* print out the class permissions */
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for (i = 0; secclass_map[i].name; i++) {
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struct security_class_mapping *map = &secclass_map[i];
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fprintf(fout, "class %s\n", map->name);
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fprintf(fout, "{\n");
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for (j = 0; map->perms[j]; j++)
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fprintf(fout, "\t%s\n", map->perms[j]);
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fprintf(fout, "}\n\n");
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}
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fprintf(fout, "\n");
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/* NOW PRINT OUT MLS STUFF */
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if (mls) {
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printf("MLS not yet implemented\n");
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exit(1);
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}
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/* types, roles, and allows */
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fprintf(fout, "type base_t;\n");
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fprintf(fout, "role base_r;\n");
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fprintf(fout, "role base_r types { base_t };\n");
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for (i = 0; secclass_map[i].name; i++)
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fprintf(fout, "allow base_t base_t:%s *;\n",
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secclass_map[i].name);
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fprintf(fout, "user user_u roles { base_r };\n");
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fprintf(fout, "\n");
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/* default sids */
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for (i = 1; i < initial_sid_to_string_len; i++)
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fprintf(fout, "sid %s user_u:base_r:base_t\n", initial_sid_to_string[i]);
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fprintf(fout, "\n");
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fprintf(fout, "fs_use_xattr ext2 user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr ext3 user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr ext4 user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr jfs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr xfs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr reiserfs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr jffs2 user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr gfs2 user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_xattr lustre user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_task eventpollfs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_task pipefs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_task sockfs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_trans mqueue user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_trans devpts user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_trans hugetlbfs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_trans tmpfs user_u:base_r:base_t;\n");
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fprintf(fout, "fs_use_trans shm user_u:base_r:base_t;\n");
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fprintf(fout, "genfscon proc / user_u:base_r:base_t\n");
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fclose(fout);
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fout = fopen(ctxout, "w");
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if (!fout) {
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printf("Wrote policy, but cannot open %s for writing\n", ctxout);
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usage(argv[0]);
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}
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fprintf(fout, "/ user_u:base_r:base_t\n");
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fprintf(fout, "/.* user_u:base_r:base_t\n");
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fclose(fout);
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return 0;
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}
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