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// This file is part of Firejail project
// Copyright (C) 2014-2020 Firejail Authors
// License GPL v2
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/syscall.h>
static void usage(void) {
printf("memwrexe options\n");
printf("where options is:\n");
printf("\tmmap - mmap test\n");
printf("\tmprotect - mprotect test\n");
printf("\tmemfd_create - memfd_create test\n");
}
int main(int argc, char **argv) {
if (argc != 2) {
fprintf(stderr, "TESTING ERROR: memwrexe insufficient params\n");
usage();
return 1;
}
if (strcmp(argv[1], "mmap") == 0) {
// open some file
int fd = open("memwrexe.c", O_RDONLY);
if (fd == -1) {
fprintf(stderr, "TESTING ERROR: file not found, cannot run mmap test\n");
return 1;
}
int size = lseek(fd, 0, SEEK_END);
if (size == -1) {
fprintf(stderr, "TESTING ERROR: file not found, cannot run mmap test\n");
return 1;
}
void *p = mmap (0, size, PROT_WRITE|PROT_READ|PROT_EXEC, MAP_SHARED, fd, 0);
printf("mmap successful\n");
// wait for expect to timeout
sleep(100);
return 0;
}
else if (strcmp(argv[1], "mprotect") == 0) {
// open some file
int fd = open("memwrexe.c", O_RDWR);
if (fd == -1) {
fprintf(stderr, "TESTING ERROR: file not found, cannot run mmap test\n");
return 1;
}
int size = lseek(fd, 0, SEEK_END);
if (size == -1) {
fprintf(stderr, "TESTING ERROR: file not found, cannot run mmap test\n");
return 1;
}
void *p = mmap (0, size, PROT_READ, MAP_SHARED, fd, 0);
if (!p) {
fprintf(stderr, "TESTING ERROR: cannot map file for mprotect test\n");
return 1;
}
mprotect(p, size, PROT_READ|PROT_WRITE|PROT_EXEC);
printf("mprotect successful\n");
// wait for expect to timeout
sleep(100);
return 0;
}
else if (strcmp(argv[1], "memfd_create") == 0) {
int fd = syscall(SYS_memfd_create, "memfd_create", 0);
if (fd == -1) {
fprintf(stderr, "TESTING ERROR: cannot run memfd_create test\n");
return 1;
}
printf("memfd_create successful\n");
// wait for expect to timeout
sleep(100);
return 0;
}
}
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