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Directory : /proc/self/root/usr/src/kernels/3.10.0-1160.118.1.el7.x86_64/scripts/selinux/mdp/

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Current File : /proc/self/root/usr/src/kernels/3.10.0-1160.118.1.el7.x86_64/scripts/selinux/mdp/mdp.c

/*
 *
 * mdp - make dummy policy
 *
 * When pointed at a kernel tree, builds a dummy policy for that kernel
 * with exactly one type with full rights to itself.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 * Copyright (C) IBM Corporation, 2006
 *
 * Authors: Serge E. Hallyn <serue@us.ibm.com>
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

static void usage(char *name)
{
	printf("usage: %s [-m] policy_file context_file\n", name);
	exit(1);
}

/* Class/perm mapping support */
struct security_class_mapping {
	const char *name;
	const char *perms[sizeof(unsigned) * 8 + 1];
};

#include "classmap.h"
#include "initial_sid_to_string.h"

int main(int argc, char *argv[])
{
	int i, j, mls = 0;
	int initial_sid_to_string_len;
	char **arg, *polout, *ctxout;

	FILE *fout;

	if (argc < 3)
		usage(argv[0]);
	arg = argv+1;
	if (argc==4 && strcmp(argv[1], "-m") == 0) {
		mls = 1;
		arg++;
	}
	polout = *arg++;
	ctxout = *arg;

	fout = fopen(polout, "w");
	if (!fout) {
		printf("Could not open %s for writing\n", polout);
		usage(argv[0]);
	}

	/* print out the classes */
	for (i = 0; secclass_map[i].name; i++)
		fprintf(fout, "class %s\n", secclass_map[i].name);
	fprintf(fout, "\n");

	initial_sid_to_string_len = sizeof(initial_sid_to_string) / sizeof (char *);
	/* print out the sids */
	for (i = 1; i < initial_sid_to_string_len; i++)
		fprintf(fout, "sid %s\n", initial_sid_to_string[i]);
	fprintf(fout, "\n");

	/* print out the class permissions */
	for (i = 0; secclass_map[i].name; i++) {
		struct security_class_mapping *map = &secclass_map[i];
		fprintf(fout, "class %s\n", map->name);
		fprintf(fout, "{\n");
		for (j = 0; map->perms[j]; j++)
			fprintf(fout, "\t%s\n", map->perms[j]);
		fprintf(fout, "}\n\n");
	}
	fprintf(fout, "\n");

	/* NOW PRINT OUT MLS STUFF */
	if (mls) {
		printf("MLS not yet implemented\n");
		exit(1);
	}

	/* types, roles, and allows */
	fprintf(fout, "type base_t;\n");
	fprintf(fout, "role base_r types { base_t };\n");
	for (i = 0; secclass_map[i].name; i++)
		fprintf(fout, "allow base_t base_t:%s *;\n",
			secclass_map[i].name);
	fprintf(fout, "user user_u roles { base_r };\n");
	fprintf(fout, "\n");

	/* default sids */
	for (i = 1; i < initial_sid_to_string_len; i++)
		fprintf(fout, "sid %s user_u:base_r:base_t\n", initial_sid_to_string[i]);
	fprintf(fout, "\n");

	fprintf(fout, "fs_use_xattr ext2 user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr ext3 user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr ext4 user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr jfs user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr xfs user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr reiserfs user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr jffs2 user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr gfs2 user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_xattr lustre user_u:base_r:base_t;\n");

	fprintf(fout, "fs_use_task eventpollfs user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_task pipefs user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_task sockfs user_u:base_r:base_t;\n");

	fprintf(fout, "fs_use_trans mqueue user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_trans devpts user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_trans hugetlbfs user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_trans tmpfs user_u:base_r:base_t;\n");
	fprintf(fout, "fs_use_trans shm user_u:base_r:base_t;\n");

	fprintf(fout, "genfscon proc / user_u:base_r:base_t\n");

	fclose(fout);

	fout = fopen(ctxout, "w");
	if (!fout) {
		printf("Wrote policy, but cannot open %s for writing\n", ctxout);
		usage(argv[0]);
	}
	fprintf(fout, "/ user_u:base_r:base_t\n");
	fprintf(fout, "/.* user_u:base_r:base_t\n");
	fclose(fout);

	return 0;
}

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