cregit-Linux how code gets into the kernel

Release 4.10 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
 * 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 <>

/* NOTE: we really do want to use the kernel headers here */


#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); }


serge hallynserge hallyn2195.45%150.00%
trevor keithtrevor keith14.55%150.00%

/* 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;\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; }


serge hallynserge hallyn50883.97%133.33%
stephen d. smalleystephen d. smalley9014.88%133.33%
laurent bigonvillelaurent bigonville71.16%133.33%

Overall Contributors

serge hallynserge hallyn55782.40%120.00%
stephen d. smalleystephen d. smalley10715.83%120.00%
laurent bigonvillelaurent bigonville71.04%120.00%
paul moorepaul moore40.59%120.00%
trevor keithtrevor keith10.15%120.00%
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