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#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "arch.h"
#include "fd.h"
#include "files.h"
#include "ftrace.h"
#include "ioctls.h"
#include "log.h"
#include "maps.h"
#include "pids.h"
#include "params.h"
#include "domains.h"
#include "random.h"
#include "signals.h"
#include "shm.h"
#include "sysv-shm.h"
#include "futex.h"
#include "stats.h"
#include "tables.h"
#include "taint.h"
#include "trinity.h"
#include "uid.h"
#include "version.h"
pid_t mainpid;
char *progname = NULL;
unsigned int page_size;
unsigned int num_online_cpus;
bool no_bind_to_cpu;
unsigned int max_children;
/*
* just in case we're not using the test.sh harness, we
* change to the tmp dir if it exists.
*/
static void change_tmp_dir(void)
{
struct stat sb;
const char tmpdir[]="tmp/";
int ret;
/* Check if it exists, bail early if it doesn't */
ret = (lstat(tmpdir, &sb));
if (ret == -1)
return;
/* Just in case a previous run screwed the perms. */
ret = chmod(tmpdir, 0777);
if (ret == -1)
output(0, "Couldn't chmod %s to 0777.\n", tmpdir);
ret = chdir(tmpdir);
if (ret == -1)
output(0, "Couldn't change to %s\n", tmpdir);
}
static int set_exit_code(enum exit_reasons reason)
{
int ret = EXIT_SUCCESS;
switch (reason) {
case EXIT_NO_SYSCALLS_ENABLED:
case EXIT_NO_FDS:
case EXIT_LOST_CHILD:
case EXIT_PID_OUT_OF_RANGE:
case EXIT_KERNEL_TAINTED:
case EXIT_SHM_CORRUPTION:
case EXIT_REPARENT_PROBLEM:
case EXIT_NO_FILES:
case EXIT_MAIN_DISAPPEARED:
case EXIT_UID_CHANGED:
case EXIT_LOCKING_CATASTROPHE:
case EXIT_FORK_FAILURE:
case EXIT_FD_INIT_FAILURE:
case EXIT_LOGFILE_OPEN_ERROR:
ret = EXIT_FAILURE;
break;
default:
/* the next are just to shut up -Werror=switch-enum
* pragma's are just as ugly imo. */
case STILL_RUNNING:
case EXIT_REACHED_COUNT:
case EXIT_SIGINT:
case NUM_EXIT_REASONS:
break;
}
return ret;
}
int main(int argc, char* argv[])
{
int ret = EXIT_SUCCESS;
const char taskname[13]="trinity-main";
outputstd("Trinity " VERSION " Dave Jones <davej@codemonkey.org.uk>\n");
progname = argv[0];
mainpid = getpid();
page_size = getpagesize();
num_online_cpus = sysconf(_SC_NPROCESSORS_ONLN);
max_children = num_online_cpus * 4; /* possibly overridden in params. */
select_syscall_tables();
create_shm();
parse_args(argc, argv);
init_uids();
change_tmp_dir();
init_shm();
init_taint_checking();
if (munge_tables() == FALSE) {
ret = EXIT_FAILURE;
goto out;
}
if (show_syscall_list == TRUE) {
dump_syscall_tables();
goto out;
}
if (show_ioctl_list == TRUE) {
dump_ioctls();
goto out;
}
if (show_unannotated == TRUE) {
show_unannotated_args();
goto out;
}
init_syscalls();
do_uid0_check();
if (do_specific_domain == TRUE)
find_specific_domain(specific_domain_optarg);
pids_init();
init_logging();
init_object_lists(OBJ_GLOBAL);
setup_initial_mappings();
parse_devices();
/* FIXME: Some better object construction method needed. */
create_futexes();
create_sysv_shms();
setup_main_signals();
no_bind_to_cpu = RAND_BOOL();
prctl(PR_SET_NAME, (unsigned long) &taskname);
if (open_fds() == FALSE) {
if (shm->exit_reason != STILL_RUNNING)
panic(EXIT_FD_INIT_FAILURE); // FIXME: Later, push this down to multiple EXIT's.
_exit(EXIT_FAILURE);
}
setup_ftrace();
main_loop();
destroy_global_objects();
if (is_tainted() == TRUE)
stop_ftrace();
output(0, "Ran %ld syscalls. Successes: %ld Failures: %ld\n",
shm->stats.op_count, shm->stats.successes, shm->stats.failures);
if (show_stats == TRUE)
dump_stats();
shutdown_logging();
ret = set_exit_code(shm->exit_reason);
out:
exit(ret);
}
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