int main(int argc, char* argv[]){
/*
* ensure the following items are proper:
* - this process has cap_sys_chroot=ep
* - the config files are secure
* - the config files are readable
* - enough arguments were provided
*/
/* ensure this process has the required capabilities */
ensure_capsyschroot(argv[0]);
/* ensure config file is only writable by root */
ensure_config_secure();
/* ensure config file is readable */
ensure_config_readable();
/* ensure there are enough arguments */
ensure_enough_arguments(argc, argv);
/*
* gather the following pieces of information:
* - the command (and its arguments) to run in the chroot
* - the path to the chroot
* - the directory to be cwd in the chroot
*/
/* get command to run in chroot */
char* shell[2];
char** chroot_command = get_chroot_command(argc, argv, shell);
/* get path to chroot */
char chroot_path[PATH_MAX];
get_chroot_path(argv,chroot_path);
/* get cwd - will attempt to make this cwd in chroot */
char* chroot_cwd = getcwd(NULL, PATH_MAX);
/*
* run the command in the proper context:
* - if we're in a chroot, break out
* - chroot the new directory, ensuring cwd is within it.
* - change cwd to desired directory if it exists; remain in / otherwise.
* - run command
* - if needed, abort cleanly
*/
/* break out of chroot */
break_out_of_chroot();
/* chroot to new directory */
chdir(chroot_path);
chroot(".");
/* change cwd in the chroot to what it was previously, if possible */
if(chdir(chroot_cwd) != 0)
fprintf(stderr,"WARNING: \"%s\" not present in target client, falling back to root directory\n", chroot_cwd);
/* We need to free previously allocated memory */
free(chroot_cwd);
/* run command */
execvp(chroot_command[0], chroot_command);
/* if there is an error, abort cleanly */
perror("execvp");
return 2;
}
rtems_task Init(
rtems_task_argument ignored)
{
int rc=0;
puts( "\n\n*** FILE SYSTEM TEST ( " FILESYSTEM " ) ***" );
puts( "Initializing filesystem " FILESYSTEM );
test_initialize_filesystem();
rc=chroot(BASE_FOR_TEST);
rtems_test_assert(rc==0);
test();
break_out_of_chroot();
puts( "\n\nShutting down filesystem " FILESYSTEM );
test_shutdown_filesystem();
puts( "*** END OF FILE SYSTEM TEST ( " FILESYSTEM " ) ***" );
rtems_test_exit(0);
}
