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// SPDX-License-Identifier: GPL-2.0
/* NOTE: we really do want to use the kernel headers here */
#define __EXPORTED_HEADERS__
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
struct security_class_mapping {
const char *name;
const char *perms[sizeof(unsigned) * 8 + 1];
};
#include "classmap.h"
#include "initial_sid_to_string.h"
const char *progname;
static void usage(void)
{
printf("usage: %s flask.h av_permissions.h\n", progname);
exit(1);
}
static char *stoupperx(const char *s)
{
char *s2 = strdup(s);
char *p;
if (!s2) {
fprintf(stderr, "%s: out of memory\n", progname);
exit(3);
}
for (p = s2; *p; p++)
*p = toupper(*p);
return s2;
}
int main(int argc, char *argv[])
{
int i, j;
int isids_len;
FILE *fout;
progname = argv[0];
if (argc < 3)
usage();
fout = fopen(argv[1], "w");
if (!fout) {
fprintf(stderr, "Could not open %s for writing: %s\n",
argv[1], strerror(errno));
exit(2);
}
fprintf(fout, "/* This file is automatically generated. Do not edit. */\n");
fprintf(fout, "#ifndef _SELINUX_FLASK_H_\n#define _SELINUX_FLASK_H_\n\n");
for (i = 0; secclass_map[i].name; i++) {
char *name = stoupperx(secclass_map[i].name);
fprintf(fout, "#define SECCLASS_%-39s %2d\n", name, i+1);
free(name);
}
fprintf(fout, "\n");
isids_len = sizeof(initial_sid_to_string) / sizeof(char *);
for (i = 1; i < isids_len; i++) {
const char *s = initial_sid_to_string[i];
if (s) {
char *sidname = stoupperx(s);
fprintf(fout, "#define SECINITSID_%-39s %2d\n", sidname, i);
free(sidname);
}
}
fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1);
fprintf(fout, "\nstatic inline bool security_is_socket_class(u16 kern_tclass)\n");
fprintf(fout, "{\n");
fprintf(fout, "\tbool sock = false;\n\n");
fprintf(fout, "\tswitch (kern_tclass) {\n");
for (i = 0; secclass_map[i].name; i++) {
static char s[] = "SOCKET";
int len, l;
char *name = stoupperx(secclass_map[i].name);
len = strlen(name);
l = sizeof(s) - 1;
if (len >= l && memcmp(name + len - l, s, l) == 0)
fprintf(fout, "\tcase SECCLASS_%s:\n", name);
free(name);
}
fprintf(fout, "\t\tsock = true;\n");
fprintf(fout, "\t\tbreak;\n");
fprintf(fout, "\tdefault:\n");
fprintf(fout, "\t\tbreak;\n");
fprintf(fout, "\t}\n\n");
fprintf(fout, "\treturn sock;\n");
fprintf(fout, "}\n");
fprintf(fout, "\n#endif\n");
if (fclose(fout) != 0) {
fprintf(stderr, "Could not successfully close %s: %s\n",
argv[1], strerror(errno));
exit(4);
}
fout = fopen(argv[2], "w");
if (!fout) {
fprintf(stderr, "Could not open %s for writing: %s\n",
argv[2], strerror(errno));
exit(5);
}
fprintf(fout, "/* This file is automatically generated. Do not edit. */\n");
fprintf(fout, "#ifndef _SELINUX_AV_PERMISSIONS_H_\n#define _SELINUX_AV_PERMISSIONS_H_\n\n");
for (i = 0; secclass_map[i].name; i++) {
const struct security_class_mapping *map = &secclass_map[i];
int len;
char *name = stoupperx(map->name);
len = strlen(name);
for (j = 0; map->perms[j]; j++) {
char *permname;
if (j >= 32) {
fprintf(stderr, "Too many permissions to fit into an access vector at (%s, %s).\n",
map->name, map->perms[j]);
exit(5);
}
permname = stoupperx(map->perms[j]);
fprintf(fout, "#define %s__%-*s 0x%08xU\n", name,
39-len, permname, 1U<<j);
free(permname);
}
free(name);
}
fprintf(fout, "\n#endif\n");
if (fclose(fout) != 0) {
fprintf(stderr, "Could not successfully close %s: %s\n",
argv[2], strerror(errno));
exit(6);
}
exit(0);
}
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